maurice/snix
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

chore(ops/kontemplate): drop

Browse source 
We don't use this.

Change-Id: I3e6825521928f444a50426e493f448400c752b4e
Reviewed-on: https://cl.snix.dev/c/snix/+/30183
Autosubmit: Florian Klink <flokli@flokli.de>
Reviewed-by: Ryan Lahfa <masterancpp@gmail.com>
Tested-by: besadii
This commit is contained in:
Florian Klink 2025-03-20 13:51:07 +00:00 • committed by clbot
parent dd7372782a
commit 29b4d0367b
48 changed files with 0 additions and 3422 deletions
Download patch file Download diff file Expand all files Collapse all files

2
ops/kontemplate/.gitignore vendored
View file

@ -1,2 +0,0 @@
.idea/
release/

674
ops/kontemplate/LICENSE
View file

@ -1,674 +0,0 @@
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for
software and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users. We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors. You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.
To protect your rights, we need to prevent others from denying you
these rights or asking you to surrender the rights. Therefore, you have
certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must pass on to the recipients the same
freedoms that you received. You must make sure that they, too, receive
or can get the source code. And you must show them these terms so they
know their rights.
Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
giving you legal permission to copy, distribute and/or modify it.
For the developers' and authors' protection, the GPL clearly explains
that there is no warranty for this free software. For both users' and
authors' sake, the GPL requires that modified versions be marked as
changed, so that their problems will not be attributed erroneously to
authors of previous versions.
Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the manufacturer
can do so. This is fundamentally incompatible with the aim of
protecting users' freedom to change the software. The systematic
pattern of such abuse occurs in the area of products for individuals to
use, which is precisely where it is most unacceptable. Therefore, we
have designed this version of the GPL to prohibit the practice for those
products. If such problems arise substantially in other domains, we
stand ready to extend this provision to those domains in future versions
of the GPL, as needed to protect the freedom of users.
Finally, every program is threatened constantly by software patents.
States should not allow patents to restrict development and use of
software on general-purpose computers, but in those that do, we wish to
avoid the special danger that patents applied to a free program could
make it effectively proprietary. To prevent this, the GPL assures that
patents cannot be used to render the program non-free.
The precise terms and conditions for copying, distribution and
modification follow.
TERMS AND CONDITIONS
0. Definitions.
"This License" refers to version 3 of the GNU General Public License.
"Copyright" also means copyright-like laws that apply to other kinds of
works, such as semiconductor masks.
"The Program" refers to any copyrightable work licensed under this
License. Each licensee is addressed as "you". "Licensees" and
"recipients" may be individuals or organizations.
To "modify" a work means to copy from or adapt all or part of the work
in a fashion requiring copyright permission, other than the making of an
exact copy. The resulting work is called a "modified version" of the
earlier work or a work "based on" the earlier work.
A "covered work" means either the unmodified Program or a work based
on the Program.
To "propagate" a work means to do anything with it that, without
permission, would make you directly or secondarily liable for
infringement under applicable copyright law, except executing it on a
computer or modifying a private copy. Propagation includes copying,
distribution (with or without modification), making available to the
public, and in some countries other activities as well.
To "convey" a work means any kind of propagation that enables other
parties to make or receive copies. Mere interaction with a user through
a computer network, with no transfer of a copy, is not conveying.
An interactive user interface displays "Appropriate Legal Notices"
to the extent that it includes a convenient and prominently visible
feature that (1) displays an appropriate copyright notice, and (2)
tells the user that there is no warranty for the work (except to the
extent that warranties are provided), that licensees may convey the
work under this License, and how to view a copy of this License. If
the interface presents a list of user commands or options, such as a
menu, a prominent item in the list meets this criterion.
1. Source Code.
The "source code" for a work means the preferred form of the work
for making modifications to it. "Object code" means any non-source
form of a work.
A "Standard Interface" means an interface that either is an official
standard defined by a recognized standards body, or, in the case of
interfaces specified for a particular programming language, one that
is widely used among developers working in that language.
The "System Libraries" of an executable work include anything, other
than the work as a whole, that (a) is included in the normal form of
packaging a Major Component, but which is not part of that Major
Component, and (b) serves only to enable use of the work with that
Major Component, or to implement a Standard Interface for which an
implementation is available to the public in source code form. A
"Major Component", in this context, means a major essential component
(kernel, window system, and so on) of the specific operating system
(if any) on which the executable work runs, or a compiler used to
produce the work, or an object code interpreter used to run it.
The "Corresponding Source" for a work in object code form means all
the source code needed to generate, install, and (for an executable
work) run the object code and to modify the work, including scripts to
control those activities. However, it does not include the work's
System Libraries, or general-purpose tools or generally available free
programs which are used unmodified in performing those activities but
which are not part of the work. For example, Corresponding Source
includes interface definition files associated with source files for
the work, and the source code for shared libraries and dynamically
linked subprograms that the work is specifically designed to require,
such as by intimate data communication or control flow between those
subprograms and other parts of the work.
The Corresponding Source need not include anything that users
can regenerate automatically from other parts of the Corresponding
Source.
The Corresponding Source for a work in source code form is that
same work.
2. Basic Permissions.
All rights granted under this License are granted for the term of
copyright on the Program, and are irrevocable provided the stated
conditions are met. This License explicitly affirms your unlimited
permission to run the unmodified Program. The output from running a
covered work is covered by this License only if the output, given its
content, constitutes a covered work. This License acknowledges your
rights of fair use or other equivalent, as provided by copyright law.
You may make, run and propagate covered works that you do not
convey, without conditions so long as your license otherwise remains
in force. You may convey covered works to others for the sole purpose
of having them make modifications exclusively for you, or provide you
with facilities for running those works, provided that you comply with
the terms of this License in conveying all material for which you do
not control copyright. Those thus making or running the covered works
for you must do so exclusively on your behalf, under your direction
and control, on terms that prohibit them from making any copies of
your copyrighted material outside their relationship with you.
Conveying under any other circumstances is permitted solely under
the conditions stated below. Sublicensing is not allowed; section 10
makes it unnecessary.
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
No covered work shall be deemed part of an effective technological
measure under any applicable law fulfilling obligations under article
11 of the WIPO copyright treaty adopted on 20 December 1996, or
similar laws prohibiting or restricting circumvention of such
measures.
When you convey a covered work, you waive any legal power to forbid
circumvention of technological measures to the extent such circumvention
is effected by exercising rights under this License with respect to
the covered work, and you disclaim any intention to limit operation or
modification of the work as a means of enforcing, against the work's
users, your or third parties' legal rights to forbid circumvention of
technological measures.
4. Conveying Verbatim Copies.
You may convey verbatim copies of the Program's source code as you
receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice;
keep intact all notices stating that this License and any
non-permissive terms added in accord with section 7 apply to the code;
keep intact all notices of the absence of any warranty; and give all
recipients a copy of this License along with the Program.
You may charge any price or no price for each copy that you convey,
and you may offer support or warranty protection for a fee.
5. Conveying Modified Source Versions.
You may convey a work based on the Program, or the modifications to
produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these conditions:
a) The work must carry prominent notices stating that you modified
it, and giving a relevant date.
b) The work must carry prominent notices stating that it is
released under this License and any conditions added under section
7. This requirement modifies the requirement in section 4 to
"keep intact all notices".
c) You must license the entire work, as a whole, under this
License to anyone who comes into possession of a copy. This
License will therefore apply, along with any applicable section 7
additional terms, to the whole of the work, and all its parts,
regardless of how they are packaged. This License gives no
permission to license the work in any other way, but it does not
invalidate such permission if you have separately received it.
d) If the work has interactive user interfaces, each must display
Appropriate Legal Notices; however, if the Program has interactive
interfaces that do not display Appropriate Legal Notices, your
work need not make them do so.
A compilation of a covered work with other separate and independent
works, which are not by their nature extensions of the covered work,
and which are not combined with it such as to form a larger program,
in or on a volume of a storage or distribution medium, is called an
"aggregate" if the compilation and its resulting copyright are not
used to limit the access or legal rights of the compilation's users
beyond what the individual works permit. Inclusion of a covered work
in an aggregate does not cause this License to apply to the other
parts of the aggregate.
6. Conveying Non-Source Forms.
You may convey a covered work in object code form under the terms
of sections 4 and 5, provided that you also convey the
machine-readable Corresponding Source under the terms of this License,
in one of these ways:
a) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by the
Corresponding Source fixed on a durable physical medium
customarily used for software interchange.
b) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by a
written offer, valid for at least three years and valid for as
long as you offer spare parts or customer support for that product
model, to give anyone who possesses the object code either (1) a
copy of the Corresponding Source for all the software in the
product that is covered by this License, on a durable physical
medium customarily used for software interchange, for a price no
more than your reasonable cost of physically performing this
conveying of source, or (2) access to copy the
Corresponding Source from a network server at no charge.
c) Convey individual copies of the object code with a copy of the
written offer to provide the Corresponding Source. This
alternative is allowed only occasionally and noncommercially, and
only if you received the object code with such an offer, in accord
with subsection 6b.
d) Convey the object code by offering access from a designated
place (gratis or for a charge), and offer equivalent access to the
Corresponding Source in the same way through the same place at no
further charge. You need not require recipients to copy the
Corresponding Source along with the object code. If the place to
copy the object code is a network server, the Corresponding Source
may be on a different server (operated by you or a third party)
that supports equivalent copying facilities, provided you maintain
clear directions next to the object code saying where to find the
Corresponding Source. Regardless of what server hosts the
Corresponding Source, you remain obligated to ensure that it is
available for as long as needed to satisfy these requirements.
e) Convey the object code using peer-to-peer transmission, provided
you inform other peers where the object code and Corresponding
Source of the work are being offered to the general public at no
charge under subsection 6d.
A separable portion of the object code, whose source code is excluded
from the Corresponding Source as a System Library, need not be
included in conveying the object code work.
A "User Product" is either (1) a "consumer product", which means any
tangible personal property which is normally used for personal, family,
or household purposes, or (2) anything designed or sold for incorporation
into a dwelling. In determining whether a product is a consumer product,
doubtful cases shall be resolved in favor of coverage. For a particular
product received by a particular user, "normally used" refers to a
typical or common use of that class of product, regardless of the status
of the particular user or of the way in which the particular user
actually uses, or expects or is expected to use, the product. A product
is a consumer product regardless of whether the product has substantial
commercial, industrial or non-consumer uses, unless such uses represent
the only significant mode of use of the product.
"Installation Information" for a User Product means any methods,
procedures, authorization keys, or other information required to install
and execute modified versions of a covered work in that User Product from
a modified version of its Corresponding Source. The information must
suffice to ensure that the continued functioning of the modified object
code is in no case prevented or interfered with solely because
modification has been made.
If you convey an object code work under this section in, or with, or
specifically for use in, a User Product, and the conveying occurs as
part of a transaction in which the right of possession and use of the
User Product is transferred to the recipient in perpetuity or for a
fixed term (regardless of how the transaction is characterized), the
Corresponding Source conveyed under this section must be accompanied
by the Installation Information. But this requirement does not apply
if neither you nor any third party retains the ability to install
modified object code on the User Product (for example, the work has
been installed in ROM).
The requirement to provide Installation Information does not include a
requirement to continue to provide support service, warranty, or updates
for a work that has been modified or installed by the recipient, or for
the User Product in which it has been modified or installed. Access to a
network may be denied when the modification itself materially and
adversely affects the operation of the network or violates the rules and
protocols for communication across the network.
Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.
7. Additional Terms.
"Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law. If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.
When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it. (Additional permissions may be written to require their own
removal in certain cases when you modify the work.) You may place
additional permissions on material, added by you to a covered work,
for which you have or can give appropriate copyright permission.
Notwithstanding any other provision of this License, for material you
add to a covered work, you may (if authorized by the copyright holders of
that material) supplement the terms of this License with terms:
a) Disclaiming warranty or limiting liability differently from the
terms of sections 15 and 16 of this License; or
b) Requiring preservation of specified reasonable legal notices or
author attributions in that material or in the Appropriate Legal
Notices displayed by works containing it; or
c) Prohibiting misrepresentation of the origin of that material, or
requiring that modified versions of such material be marked in
reasonable ways as different from the original version; or
d) Limiting the use for publicity purposes of names of licensors or
authors of the material; or
e) Declining to grant rights under trademark law for use of some
trade names, trademarks, or service marks; or
f) Requiring indemnification of licensors and authors of that
material by anyone who conveys the material (or modified versions of
it) with contractual assumptions of liability to the recipient, for
any liability that these contractual assumptions directly impose on
those licensors and authors.
All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10. If the Program as you
received it, or any part of it, contains a notice stating that it is
governed by this License along with a term that is a further
restriction, you may remove that term. If a license document contains
a further restriction but permits relicensing or conveying under this
License, you may add to a covered work material governed by the terms
of that license document, provided that the further restriction does
not survive such relicensing or conveying.
If you add terms to a covered work in accord with this section, you
must place, in the relevant source files, a statement of the
additional terms that apply to those files, or a notice indicating
where to find the applicable terms.
Additional terms, permissive or non-permissive, may be stated in the
form of a separately written license, or stated as exceptions;
the above requirements apply either way.
8. Termination.
You may not propagate or modify a covered work except as expressly
provided under this License. Any attempt otherwise to propagate or
modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11).
However, if you cease all violation of this License, then your
license from a particular copyright holder is reinstated (a)
provisionally, unless and until the copyright holder explicitly and
finally terminates your license, and (b) permanently, if the copyright
holder fails to notify you of the violation by some reasonable means
prior to 60 days after the cessation.
Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.
Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License. If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.
9. Acceptance Not Required for Having Copies.
You are not required to accept this License in order to receive or
run a copy of the Program. Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance. However,
nothing other than this License grants you permission to propagate or
modify any covered work. These actions infringe copyright if you do
not accept this License. Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.
10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License. You are not responsible
for enforcing compliance by third parties with this License.
An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations. If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License. For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
11. Patents.
A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based. The
work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version. For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.
In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement). To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.
If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients. "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License. You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

185
ops/kontemplate/README.md
View file

@ -1,185 +0,0 @@
Kontemplate - A simple Kubernetes templater
===========================================
Kontemplate is a simple CLI tool that can take sets of Kubernetes resource files
with placeholders and insert values per environment.
This tool was made because in many cases all I want in terms of Kubernetes
configuration is simple value interpolation per environment (i.e. Kubernetes
cluster), but with the same deployment files.
In my experience this is often enough and more complex solutions such as
[Helm][] are not required.
Check out a Kontemplate setup example and the feature list below!
<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc -->
**Table of Contents**
- [Kontemplate - A simple Kubernetes templater](#kontemplate---a-simple-kubernetes-templater)
- [Features](#features)
- [Example](#example)
- [Installation](#installation)
- [Homebrew](#homebrew)
- [Arch Linux](#arch-linux)
- [Building repeatably from source](#building-repeatably-from-source)
- [Building from source](#building-from-source)
- [Usage](#usage)
- [Contributing](#contributing)
<!-- markdown-toc end -->
## Features
* [Simple, yet powerful templates](docs/templates.md)
* [Clean cluster configuration files](docs/cluster-config.md)
* [Resources organised as simple resource sets](docs/resource-sets.md)
* Integration with pass
* Integration with kubectl
## Example
Kontemplate lets you describe resources as you normally would in a simple folder structure:
```
.
├── prod-cluster.yaml
└── some-api
├── deployment.yaml
└── service.yaml
```
This example has all resources belonging to `some-api` (no file naming conventions enforced at all!) in the `some-api`
folder and the configuration for the cluster `prod-cluster` in the corresponding file.
Lets take a short look at `prod-cluster.yaml`:
```yaml
---
context: k8s.prod.mydomain.com
global:
globalVar: lizards
include:
- name: some-api
values:
version: 1.0-0e6884d
importantFeature: true
apiPort: 4567
```
Those values are then templated into the resource files of `some-api`. That's it!
You can also set up more complicated folder structures for organisation, for example:
```
.
├── api
│   ├── image-api
│   │   └── deployment.yaml
│   └── music-api
│   └── deployment.yaml
│   │   └── default.json
├── frontend
│   ├── main-app
│   │   ├── deployment.yaml
│   │   └── service.yaml
│   └── user-page
│   ├── deployment.yaml
│   └── service.yaml
├── prod-cluster.yaml
└── test-cluster.yaml
```
And selectively template or apply resources with a command such as
`kontemplate apply test-cluster.yaml --include api --include frontend/user-page`
to only update the `api` resource sets and the `frontend/user-page` resource set.
## Installation
It is recommended to install Kontemplate from the [Nix](https://nixos.org/) package set,
where it is available since NixOS 17.09 as `kontemplate`.
If using Nix is not an option for you, several other methods of installation are
available:
### Binary releases
Signed binary releases are available on the [releases page][] for Linux, OS X, FreeBSD and
Windows.
Releases are signed with the GPG key `DCF34CFAC1AC44B87E26333136EE34814F6D294A`.
### Building from source
You can clone Kontemplate either by cloning the full TVL
[depot][https://code.tvl.fyi] or by just cloning the kontemplate
subtree like so:
git clone https://code.tvl.fyi/depot.git:/ops/kontemplate.git
The `go` tooling can be used as normal with this cloned repository. In
a full clone of the depot, Nix can be used to build Kontemplate:
nix-build -A ops.kontemplate
## Usage
You must have `kubectl` installed to use Kontemplate effectively.
```
usage: kontemplate [<flags>] <command> [<args> ...]
simple Kubernetes resource templating
Flags:
-h, --help Show context-sensitive help (also try --help-long and --help-man).
-i, --include=INCLUDE ... Resource sets to include explicitly
-e, --exclude=EXCLUDE ... Resource sets to exclude explicitly
Commands:
help [<command>...]
Show help.
template <file>
Template resource sets and print them
apply [<flags>] <file>
Template resources and pass to 'kubectl apply'
replace <file>
Template resources and pass to 'kubectl replace'
delete <file>
Template resources and pass to 'kubectl delete'
create <file>
Template resources and pass to 'kubectl create'
```
Examples:
```
# Look at output for a specific resource set and check to see if it's correct ...
kontemplate template example/prod-cluster.yaml -i some-api
# ... maybe do a dry-run to see what kubectl would do:
kontemplate apply example/prod-cluster.yaml --dry-run
# And actually apply it if you like what you see:
kontemplate apply example/prod-cluster.yaml
```
Check out the feature list and the individual feature documentation above. Then you should be good to go!
## Contributing
Feel free to contribute pull requests, file bugs and open issues with feature suggestions!
Kontemplate is licensed under the GPLv3, a copy of the license and its terms can be found
in the `LICENSE` file.
Please follow the [code of conduct](CODE_OF_CONDUCT.md).
[Helm]: https://helm.sh/
[releases page]: https://github.com/tazjin/kontemplate/releases

75
ops/kontemplate/build-release.sh
View file

@ -1,75 +0,0 @@
#!/usr/bin/env bash
set -ueo pipefail
# Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in>
#
# This file is part of Kontemplate.
#
# Kontemplate is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
readonly GIT_HASH="$(git rev-parse --short HEAD)"
readonly LDFLAGS="-X main.gitHash=${GIT_HASH} -w -s"
readonly VERSION="1.8.0-${GIT_HASH}"
function binary-name() {
local os="${1}"
local target="${2}"
if [ "${os}" = "windows" ]; then
echo -n "${target}/kontemplate.exe"
else
echo -n "${target}/kontemplate"
fi
}
function build-for() {
local os="${1}"
local arch="${2}"
local target="release/${os}/${arch}"
local bin=$(binary-name "${os}" "${target}")
echo "Building kontemplate for ${os}-${arch} in ${target}"
mkdir -p "${target}"
env GOOS="${os}" GOARCH="${arch}" go build \
-ldflags "${LDFLAGS}" \
-o "${bin}" \
-tags netgo
}
function sign-for() {
local os="${1}"
local arch="${2}"
local target="release/${os}/${arch}"
local bin=$(binary-name "${os}" "${target}")
local tar="release/kontemplate-${VERSION}-${os}-${arch}.tar.gz"
echo "Packing release into ${tar}"
tar czvf "${tar}" -C "${target}" $(basename "${bin}")
local hash=$(sha256sum "${tar}")
echo "Signing kontemplate release tarball for ${os}-${arch} with SHA256 ${hash}"
gpg --armor --detach-sig --sign "${tar}"
}
case "${1}" in
"build")
# Build releases for various operating systems:
build-for "linux" "amd64"
build-for "darwin" "amd64"
build-for "windows" "amd64"
build-for "freebsd" "amd64"
exit 0
;;
"sign")
# Bundle and sign releases:
sign-for "linux" "amd64"
sign-for "darwin" "amd64"
sign-for "windows" "amd64"
sign-for "freebsd" "amd64"
exit 0
;;
esac

266
ops/kontemplate/context/context.go
View file

@ -1,266 +0,0 @@
// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in>
//
// This file is part of Kontemplate.
//
// Kontemplate is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
package context
import (
"fmt"
"path"
"strings"
"github.com/tazjin/kontemplate/util"
)
type ResourceSet struct {
// Name of the resource set. This can be used in include/exclude statements during kontemplate runs.
Name string `json:"name"`
// Path to the folder containing the files for this resource set. This defaults to the value of the 'name' field
// if unset.
Path string `json:"path"`
// Values to include when interpolating resources from this resource set.
Values map[string]interface{} `json:"values"`
// Args to pass on to kubectl for this resource set.
Args []string `json:"args"`
// Nested resource sets to include
Include []ResourceSet `json:"include"`
// Parent resource set for flattened resource sets. Should not be manually specified.
Parent string
}
type Context struct {
// The name of the kubectl context
Name string `json:"context"`
// Global variables that should be accessible by all resource sets
Global map[string]interface{} `json:"global"`
// File names of YAML or JSON files including extra variables that should be globally accessible
VariableImportFiles []string `json:"import"`
// The resource sets to include in this context
ResourceSets []ResourceSet `json:"include"`
// Variables imported from additional files
ImportedVars map[string]interface{}
// Explicitly set variables (via `--var`) that should override all others
ExplicitVars map[string]interface{}
// This field represents the absolute path to the context base directory and should not be manually specified.
BaseDir string
}
func contextLoadingError(filename string, cause error) error {
return fmt.Errorf("Context loading failed on file %s due to: \n%v", filename, cause)
}
// Attempt to load and deserialise a Context from the specified file.
func LoadContext(filename string, explicitVars *[]string) (*Context, error) {
var ctx Context
err := util.LoadData(filename, &ctx)
if err != nil {
return nil, contextLoadingError(filename, err)
}
ctx.BaseDir = path.Dir(filename)
// Prepare the resource sets by resolving parents etc.
ctx.ResourceSets = flattenPrepareResourceSetPaths(&ctx.BaseDir, &ctx.ResourceSets)
// Add variables explicitly specified on the command line
ctx.ExplicitVars, err = loadExplicitVars(explicitVars)
if err != nil {
return nil, fmt.Errorf("Error setting explicit variables: %v\n", err)
}
// Add variables loaded from import files
ctx.ImportedVars, err = ctx.loadImportedVariables()
if err != nil {
return nil, contextLoadingError(filename, err)
}
// Merge variables defined at different levels. The
// `mergeContextValues` function is documented with the merge
// hierarchy.
ctx.ResourceSets = ctx.mergeContextValues()
if err != nil {
return nil, contextLoadingError(filename, err)
}
return &ctx, nil
}
// Kontemplate supports specifying additional variable files with the
// `import` keyword. This function loads those variable files and
// merges them together with the context's other global variables.
func (ctx *Context) loadImportedVariables() (map[string]interface{}, error) {
allImportedVars := make(map[string]interface{})
for _, file := range ctx.VariableImportFiles {
// Ensure that the filename is not merged with the baseDir if
// it is set to an absolute path.
var filePath string
if path.IsAbs(file) {
filePath = file
} else {
filePath = path.Join(ctx.BaseDir, file)
}
var importedVars map[string]interface{}
err := util.LoadData(filePath, &importedVars)
if err != nil {
return nil, err
}
allImportedVars = *util.Merge(&allImportedVars, &importedVars)
}
return allImportedVars, nil
}
// Correctly prepares the file paths for resource sets by inferring implicit paths and flattening resource set
// collections, i.e. resource sets that themselves have an additional 'include' field set.
// Those will be regarded as a short-hand for including multiple resource sets from a subfolder.
// See https://github.com/tazjin/kontemplate/issues/9 for more information.
func flattenPrepareResourceSetPaths(baseDir *string, rs *[]ResourceSet) []ResourceSet {
flattened := make([]ResourceSet, 0)
for _, r := range *rs {
// If a path is not explicitly specified it should default to the resource set name.
// This is also the classic behaviour prior to kontemplate 1.2
if r.Path == "" {
r.Path = r.Name
}
// Paths are made absolute by resolving them relative to the context base,
// unless absolute paths were specified.
if !path.IsAbs(r.Path) {
r.Path = path.Join(*baseDir, r.Path)
}
if len(r.Include) == 0 {
flattened = append(flattened, r)
} else {
for _, subResourceSet := range r.Include {
if subResourceSet.Path == "" {
subResourceSet.Path = subResourceSet.Name
}
subResourceSet.Parent = r.Name
subResourceSet.Name = path.Join(r.Name, subResourceSet.Name)
subResourceSet.Path = path.Join(r.Path, subResourceSet.Path)
subResourceSet.Values = *util.Merge(&r.Values, &subResourceSet.Values)
flattened = append(flattened, subResourceSet)
}
}
}
return flattened
}
// Merges the context and resource set variables according in the
// desired precedence order.
//
// For now the reasoning behind the merge order is from least specific
// in relation to the cluster configuration, which means that the
// precedence is (in ascending order):
//
// 1. Default values in resource sets.
// 2. Values imported from files (via `import:`)
// 3. Global values in a cluster configuration
// 4. Values set in a resource set's `include`-section
// 5. Explicit values set on the CLI (`--var`)
//
// For a discussion on the reasoning behind this order, please consult
// https://github.com/tazjin/kontemplate/issues/142
func (ctx *Context) mergeContextValues() []ResourceSet {
updated := make([]ResourceSet, len(ctx.ResourceSets))
// Merging has to happen separately for every individual
// resource set to make use of the default values:
for i, rs := range ctx.ResourceSets {
// Begin by loading default values from the resource
// sets configuration.
//
// Resource sets are used across different cluster
// contexts and the default values in them have the
// lowest precedence.
defaultValues := loadDefaultValues(&rs, ctx)
// Continue by merging default values with values
// imported from external files. Those values are also
// used across cluster contexts, but have higher
// precedence than defaults.
merged := util.Merge(defaultValues, &ctx.ImportedVars)
// Merge global values defined in the cluster context:
merged = util.Merge(merged, &ctx.Global)
// Merge values configured in the resource set's
// `include` section:
merged = util.Merge(merged, &rs.Values)
// Merge values defined explicitly on the CLI:
merged = util.Merge(merged, &ctx.ExplicitVars)
// Continue with the newly merged resource set:
rs.Values = *merged
updated[i] = rs
}
return updated
}
// Loads default values for a resource set collection from
// path/to/set/default.{json|yaml}.
func loadDefaultValues(rs *ResourceSet, c *Context) *map[string]interface{} {
var defaultVars map[string]interface{}
for _, filename := range util.DefaultFilenames {
err := util.LoadData(path.Join(rs.Path, filename), &defaultVars)
if err == nil {
return &defaultVars
}
}
// The actual error is not inspected here. The reasoning for
// this is that in case of serious problems (e.g. permission
// issues with the folder / folder not existing) failure will
// occur a bit later anyways.
//
// Otherwise we'd have to differentiate between
// file-not-found-errors (no default values specified) and
// other errors here.
return &rs.Values
}
// Prepares the variables specified explicitly via `--var` when
// executing kontemplate for adding to the context.
func loadExplicitVars(vars *[]string) (map[string]interface{}, error) {
explicitVars := make(map[string]interface{}, len(*vars))
for _, v := range *vars {
varParts := strings.SplitN(v, "=", 2)
if len(varParts) != 2 {
return nil, fmt.Errorf(`invalid explicit variable provided (%s), name and value should be separated with "="`, v)
}
explicitVars[varParts[0]] = varParts[1]
}
return explicitVars, nil
}

353
ops/kontemplate/context/context_test.go
View file

@ -1,353 +0,0 @@
// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in>
//
// This file is part of Kontemplate.
//
// Kontemplate is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
package context
import (
"reflect"
"testing"
)
var noExplicitVars []string = make([]string, 0)
func TestLoadFlatContextFromFile(t *testing.T) {
ctx, err := LoadContext("testdata/flat-test.yaml", &noExplicitVars)
if err != nil {
t.Error(err)
t.Fail()
}
expected := Context{
Name: "k8s.prod.mydomain.com",
Global: map[string]interface{}{
"globalVar": "lizards",
},
ResourceSets: []ResourceSet{
{
Name: "some-api",
Path: "testdata/some-api",
Values: map[string]interface{}{
"apiPort": float64(4567), // yep!
"importantFeature": true,
"version": "1.0-0e6884d",
"globalVar": "lizards",
},
Include: nil,
Parent: "",
},
},
BaseDir: "testdata",
ImportedVars: make(map[string]interface{}, 0),
ExplicitVars: make(map[string]interface{}, 0),
}
if !reflect.DeepEqual(*ctx, expected) {
t.Error("Loaded context and expected context did not match")
t.Fail()
}
}
func TestLoadContextWithArgs(t *testing.T) {
ctx, err := LoadContext("testdata/flat-with-args-test.yaml", &noExplicitVars)
if err != nil {
t.Error(err)
t.Fail()
}
expected := Context{
Name: "k8s.prod.mydomain.com",
ResourceSets: []ResourceSet{
{
Name: "some-api",
Path: "testdata/some-api",
Values: make(map[string]interface{}, 0),
Args: []string{
"--as=some-user",
"--as-group=hello:world",
"--as-banana",
"true",
},
Include: nil,
Parent: "",
},
},
BaseDir: "testdata",
ImportedVars: make(map[string]interface{}, 0),
ExplicitVars: make(map[string]interface{}, 0),
}
if !reflect.DeepEqual(*ctx, expected) {
t.Error("Loaded context and expected context did not match")
t.Fail()
}
}
func TestLoadContextWithResourceSetCollections(t *testing.T) {
ctx, err := LoadContext("testdata/collections-test.yaml", &noExplicitVars)
if err != nil {
t.Error(err)
t.Fail()
}
expected := Context{
Name: "k8s.prod.mydomain.com",
Global: map[string]interface{}{
"globalVar": "lizards",
},
ResourceSets: []ResourceSet{
{
Name: "some-api",
Path: "testdata/some-api",
Values: map[string]interface{}{
"apiPort": float64(4567), // yep!
"importantFeature": true,
"version": "1.0-0e6884d",
"globalVar": "lizards",
},
Include: nil,
Parent: "",
},
{
Name: "collection/nested",
Path: "testdata/collection/nested",
Values: map[string]interface{}{
"lizards": "good",
"globalVar": "lizards",
},
Include: nil,
Parent: "collection",
},
},
BaseDir: "testdata",
ImportedVars: make(map[string]interface{}, 0),
ExplicitVars: make(map[string]interface{}, 0),
}
if !reflect.DeepEqual(*ctx, expected) {
t.Error("Loaded context and expected context did not match")
t.Fail()
}
}
func TestSubresourceVariableInheritance(t *testing.T) {
ctx, err := LoadContext("testdata/parent-variables.yaml", &noExplicitVars)
if err != nil {
t.Error(err)
t.Fail()
}
expected := Context{
Name: "k8s.prod.mydomain.com",
ResourceSets: []ResourceSet{
{
Name: "parent/child",
Path: "testdata/parent/child",
Values: map[string]interface{}{
"foo": "bar",
"bar": "baz",
},
Include: nil,
Parent: "parent",
},
},
BaseDir: "testdata",
ImportedVars: make(map[string]interface{}, 0),
ExplicitVars: make(map[string]interface{}, 0),
}
if !reflect.DeepEqual(*ctx, expected) {
t.Error("Loaded and expected context did not match")
t.Fail()
}
}
func TestSubresourceVariableInheritanceOverride(t *testing.T) {
ctx, err := LoadContext("testdata/parent-variable-override.yaml", &noExplicitVars)
if err != nil {
t.Error(err)
t.Fail()
}
expected := Context{
Name: "k8s.prod.mydomain.com",
ResourceSets: []ResourceSet{
{
Name: "parent/child",
Path: "testdata/parent/child",
Values: map[string]interface{}{
"foo": "newvalue",
},
Include: nil,
Parent: "parent",
},
},
BaseDir: "testdata",
ImportedVars: make(map[string]interface{}, 0),
ExplicitVars: make(map[string]interface{}, 0),
}
if !reflect.DeepEqual(*ctx, expected) {
t.Error("Loaded and expected context did not match")
t.Fail()
}
}
func TestDefaultValuesLoading(t *testing.T) {
ctx, err := LoadContext("testdata/default-loading.yaml", &noExplicitVars)
if err != nil {
t.Error(err)
t.Fail()
}
rs := ctx.ResourceSets[0]
if rs.Values["defaultValues"] != "loaded" {
t.Errorf("Default values not loaded from YAML file")
t.Fail()
}
if rs.Values["override"] != "notAtAll" {
t.Error("Default values should not override other values")
t.Fail()
}
}
func TestImportValuesLoading(t *testing.T) {
ctx, err := LoadContext("testdata/import-vars-simple.yaml", &noExplicitVars)
if err != nil {
t.Error(err)
t.Fail()
}
expected := map[string]interface{}{
"override": "true",
"music": map[string]interface{}{
"artist": "Pallida",
"track": "Tractor Beam",
},
}
if !reflect.DeepEqual(ctx.ImportedVars, expected) {
t.Error("Expected imported values after loading imports did not match!")
t.Fail()
}
}
func TestExplicitPathLoading(t *testing.T) {
ctx, err := LoadContext("testdata/explicit-path.yaml", &noExplicitVars)
if err != nil {
t.Error(err)
t.Fail()
}
expected := Context{
Name: "k8s.prod.mydomain.com",
ResourceSets: []ResourceSet{
{
Name: "some-api-europe",
Path: "testdata/some-api",
Values: map[string]interface{}{
"location": "europe",
},
Include: nil,
Parent: "",
},
{
Name: "some-api-asia",
Path: "testdata/some-api",
Values: map[string]interface{}{
"location": "asia",
},
Include: nil,
Parent: "",
},
},
BaseDir: "testdata",
ImportedVars: make(map[string]interface{}, 0),
ExplicitVars: make(map[string]interface{}, 0),
}
if !reflect.DeepEqual(*ctx, expected) {
t.Error("Loaded context and expected context did not match")
t.Fail()
}
}
func TestExplicitSubresourcePathLoading(t *testing.T) {
ctx, err := LoadContext("testdata/explicit-subresource-path.yaml", &noExplicitVars)
if err != nil {
t.Error(err)
t.Fail()
}
expected := Context{
Name: "k8s.prod.mydomain.com",
ResourceSets: []ResourceSet{
{
Name: "parent/child",
Path: "testdata/parent-path/child-path",
Parent: "parent",
Values: make(map[string]interface{}, 0),
},
},
BaseDir: "testdata",
ImportedVars: make(map[string]interface{}, 0),
ExplicitVars: make(map[string]interface{}, 0),
}
if !reflect.DeepEqual(*ctx, expected) {
t.Error("Loaded context and expected context did not match")
t.Fail()
}
}
func TestSetVariablesFromArguments(t *testing.T) {
vars := []string{"version=some-service-version"}
ctx, _ := LoadContext("testdata/default-loading.yaml", &vars)
if version := ctx.ExplicitVars["version"]; version != "some-service-version" {
t.Errorf(`Expected variable "version" to have value "some-service-version" but was "%s"`, version)
}
}
func TestSetInvalidVariablesFromArguments(t *testing.T) {
vars := []string{"version: some-service-version"}
_, err := LoadContext("testdata/default-loading.yaml", &vars)
if err == nil {
t.Error("Expected invalid variable to return an error")
}
}
// This test ensures that variables are merged in the correct order.
// Please consult the test data in `testdata/merging`.
func TestValueMergePrecedence(t *testing.T) {
cliVars := []string{"cliVar=cliVar"}
ctx, _ := LoadContext("testdata/merging/context.yaml", &cliVars)
expected := map[string]interface{}{
"defaultVar": "defaultVar",
"importVar": "importVar",
"globalVar": "globalVar",
"includeVar": "includeVar",
"cliVar": "cliVar",
}
result := ctx.ResourceSets[0].Values
if !reflect.DeepEqual(expected, result) {
t.Errorf("Merged values did not match expected result: \n%v", result)
t.Fail()
}
}

15
ops/kontemplate/context/testdata/collections-test.yaml vendored
View file

@ -1,15 +0,0 @@
---
context: k8s.prod.mydomain.com
global:
globalVar: lizards
include:
- name: some-api
values:
version: 1.0-0e6884d
importantFeature: true
apiPort: 4567
- name: collection
include:
- name: nested
values:
lizards: good

6
ops/kontemplate/context/testdata/default-loading.yaml vendored
View file

@ -1,6 +0,0 @@
---
context: default-loading
include:
- name: default
values:
override: notAtAll

2
ops/kontemplate/context/testdata/default/default.yaml vendored
View file

@ -1,2 +0,0 @@
defaultValues: loaded
override: noop

11
ops/kontemplate/context/testdata/explicit-path.yaml vendored
View file

@ -1,11 +0,0 @@
---
context: k8s.prod.mydomain.com
include:
- name: some-api-europe
path: some-api
values:
location: europe
- name: some-api-asia
path: some-api
values:
location: asia

8
ops/kontemplate/context/testdata/explicit-subresource-path.yaml vendored
View file

@ -1,8 +0,0 @@
---
context: k8s.prod.mydomain.com
include:
- name: parent
path: parent-path
include:
- name: child
path: child-path

10
ops/kontemplate/context/testdata/flat-test.yaml vendored
View file

@ -1,10 +0,0 @@
---
context: k8s.prod.mydomain.com
global:
globalVar: lizards
include:
- name: some-api
values:
version: 1.0-0e6884d
importantFeature: true
apiPort: 4567

9
ops/kontemplate/context/testdata/flat-with-args-test.yaml vendored
View file

@ -1,9 +0,0 @@
---
context: k8s.prod.mydomain.com
include:
- name: some-api
args:
- --as=some-user
- --as-group=hello:world
- --as-banana
- "true"

5
ops/kontemplate/context/testdata/import-vars-simple.yaml vendored
View file

@ -1,5 +0,0 @@
---
context: k8s.prod.mydomain.com
import:
- test-vars.yaml
include: []

15
ops/kontemplate/context/testdata/merging/context.yaml vendored
View file

@ -1,15 +0,0 @@
# This context file is intended to test the merge hierarchy of
# variables defined at different levels.
---
context: merging.in.kontemplate.works
global:
globalVar: globalVar
includeVar: should be overridden (global)
cliVar: should be overridden (global)
import:
- import-vars.yaml
include:
- name: resource
values:
includeVar: includeVar
cliVar: should be overridden (include)

4
ops/kontemplate/context/testdata/merging/import-vars.yaml vendored
View file

@ -1,4 +0,0 @@
importVar: importVar
globalVar: should be overridden (import)
includeVar: should be overridden (import)
cliVar: should be overridden (import)

5
ops/kontemplate/context/testdata/merging/resource/default.yaml vendored
View file

@ -1,5 +0,0 @@
defaultVar: defaultVar
importVar: should be overridden (default)
globalVar: should be overridden (default)
includeVar: should be overridden (default)
cliVar: should be overridden (default)

5
ops/kontemplate/context/testdata/merging/resource/output.yaml vendored
View file

@ -1,5 +0,0 @@
defaultVar: {{ .defaultVar }}
importVar: {{ .importVar }}
globalVar: {{ .globalVar }}
includeVar: {{ .includeVar }}
cliVar: {{ .cliVar }}

10
ops/kontemplate/context/testdata/parent-variable-override.yaml vendored
View file

@ -1,10 +0,0 @@
---
context: k8s.prod.mydomain.com
include:
- name: parent
values:
foo: bar
include:
- name: child
values:
foo: newvalue

10
ops/kontemplate/context/testdata/parent-variables.yaml vendored
View file

@ -1,10 +0,0 @@
---
context: k8s.prod.mydomain.com
include:
- name: parent
values:
foo: bar
include:
- name: child
values:
bar: baz

3
ops/kontemplate/context/testdata/test-vars-override.yaml vendored
View file

@ -1,3 +0,0 @@
---
override: 3
place: Oslo

5
ops/kontemplate/context/testdata/test-vars.yaml vendored
View file

@ -1,5 +0,0 @@
---
override: 'true'
music:
artist: Pallida
track: Tractor Beam

37
ops/kontemplate/default.nix
View file

@ -1,37 +0,0 @@
# Copyright (C) 2016-2021 Vincent Ambo <mail@tazj.in>
#
# This file is part of Kontemplate.
#
# Kontemplate is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This file is the Nix derivation used to install Kontemplate on
# Nix-based systems.
{ lib, pkgs, ... }:
pkgs.buildGoModule rec {
name = "kontemplate-${version}";
version = "canon";
src = ./.;
buildInputs = [ pkgs.parallel ];
# Enable checks and configure check-phase to include vet:
doCheck = true;
preCheck = ''
for pkg in $(getGoDirs ""); do
buildGoDir vet "$pkg"
done
'';
vendorHash = "sha256-xPGVM2dq5fAVOiuodOXhDm3v3k+ncNLhlk6aCtF5S9E=";
meta = with lib; {
description = "A resource templating helper for Kubernetes";
homepage = "http://kontemplate.works/";
license = licenses.gpl3;
};
}

106
ops/kontemplate/docs/cluster-config.md
View file

@ -1,106 +0,0 @@
Cluster configuration
==========================
Every cluster (or "environment") that requires individual configuration is specified in
a very simple YAML file in Kontemplate.
An example file for a hypothetical test environment could look like this:
```yaml
---
context: k8s.test.mydomain.com
global:
clusterName: test-cluster
defaultReplicas: 2
import:
- test-secrets.yaml
include:
- name: gateway
path: tools/nginx
values:
tlsDomains:
- test.oslo.pub
- test.tazj.in
- path: backend
values:
env: test
include:
- name: blog
values:
url: test.tazj.in
- name: pub-service
```
<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc -->
**Table of Contents**
- [Cluster configuration](#cluster-configuration)
- [Fields](#fields)
- [`context`](#context)
- [`global`](#global)
- [`import`](#import)
- [`include`](#include)
- [External variables](#external-variables)
<!-- markdown-toc end -->
## Fields
This is documentation for the individual fields in a cluster context file.
### `context`
The `context` field contains the name of the kubectl-context. You can list context names with
'kubectl config get-contexts'.
This must be set here so that Kontemplate can use the correct context when calling kubectl.
This field is **required** for `kubectl`-wrapping commands. It can be left out if only the `template`-command is used.
### `global`
The `global` field contains a key/value map of variables that should be available to all resource
sets in the cluster.
This field is **optional**.
### `import`
The `import` field contains the file names of additional YAML or JSON files from which global
variables should be loaded. Using this field makes it possible to keep certain configuration that
is the same for some, but not all, clusters in a common place.
This field is **optional**.
### `include`
The `include` field contains the actual resource sets to be included in the cluster.
Information about the structure of resource sets can be found in the [resource set documentation][].
This field is **required**.
## External variables
As mentioned above, extra variables can be loaded from additional YAML or JSON files. Assuming you
have a file called `test-secrets.yaml` which contains variables that should be shared between a `test`
and `dev` cluster, you could import it in your context as such:
```yaml
# test-secrets.yaml:
mySecretVar: foo-bar-12345
# test-cluster.yaml:
context: k8s.test.mydomain.com
import:
- test-secrets.yaml
# dev-cluster.yaml:
context: k8s.dev.mydomain.com
import:
- test-secrets.yaml
```
The variable `mySecretVar` is then available as a global variable.
[resource set documentation]: resource-sets.md

170
ops/kontemplate/docs/resource-sets.md
View file

@ -1,170 +0,0 @@
Resource Sets
================
Resource sets are collections of Kubernetes resources that should be passed to `kubectl` together.
Technically a resource set is simply a folder with a few YAML and/or JSON templates in it.
<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc -->
**Table of Contents**
- [Resource Sets](#resource-sets)
- [Creating resource sets](#creating-resource-sets)
- [Default variables](#default-variables)
- [Including resource sets](#including-resource-sets)
- [Fields](#fields)
- [`name`](#name)
- [`path`](#path)
- [`values`](#values)
- [`args`](#args)
- [`include`](#include)
- [Multiple includes](#multiple-includes)
- [Nesting resource sets](#nesting-resource-sets)
- [Caveats](#caveats)
<!-- markdown-toc end -->
# Creating resource sets
Simply create a folder in your Kontemplate repository and place a YAML or JSON file in it. These
files get interpreted as [templates][] during Kontemplate runs and variables (as well as template
logic or functions) will be interpolated.
Refer to the template documentation for information on how to write templates.
## Default variables
Sometimes it is useful to specify default values for variables that should be interpolated during
a run if the [cluster configuration][] does not specify a variable explicitly.
This can be done simply by placing a `default.yaml` or `default.json` file in the resource set
folder and filling it with key/value pairs of the intended default variables.
Kontemplate will error during interpolation if any variables are left unspecified.
# Including resource sets
Under the cluster configuration `include` key resource sets are included and required variables
are specified. For example:
```yaml
include:
- name: some-api
values:
version: 1.2-SNAPSHOT
```
This will include a resource set from a folder called `some-api` and set the specified `version` variable.
## Fields
The available fields when including a resource set are these:
### `name`
The `name` field contains the name of the resource set. This name can be used to refer to the resource set
when specifying explicit includes or excludes during a run.
By default it is assumed that the `name` is the path to the resource set folder, but this can be overridden.
This field is **required**.
### `path`
The `path` field specifies an explicit path to a resource set folder in the case that it should differ from
the resource set's `name`.
This field is **optional**.
### `values`
The `values` field specifies key/values pairs of variables that should be available during templating.
This field is **optional**.
### `args`
The `args` field specifies a list of arguments that should be passed to `kubectl`.
This field is **optional**.
### `include`
The `include` field specifies additional resource sets that should be included and that should inherit the
variables of this resource set.
The fully qualified names of "nested" resource sets are set to `${PARENT_NAME}/${CHILD_NAME}` and paths are
merged in the same way.
This makes it easy to organise different resource sets as "groups" to include / exclude them collectively
during runs.
This field is **optional**.
## Multiple includes
Resource sets can be included multiple times with different configurations. In this case it is recommended
to set the `path` and `name` fields explicitly. For example:
```yaml
include:
- name: forwarder-europe
path: tools/forwarder
values:
source: europe
- name: forwarder-asia
path: tools/forwarder
values:
source: asia
```
The two different configurations can be referred to by their set names, but will use the same resource
templates with different configurations.
## Nesting resource sets
As mentioned above for the `include` field, resource sets can be nested. This lets users group resource
sets in logical ways using simple folder structures.
Assuming a folder structure like:
```
├── backend
│   ├── auth-api
│   ├── message-api
│   └── order-api
└── frontend
├── app-page
└── login-page
```
With each of these folders being a resource set, they could be included in a cluster configuration like so:
```yaml
include:
- name: backend
include:
- name: auth-api
- name: message-api
- name: order-api
- name: frontend:
include:
- name: app-page
- name: login-page
```
Kontemplate could then be run with, for example, `--include backend` to only include the resource sets nested
in the backend group. Specific resource sets can also be targeted, for example as `--include backend/order-api`.
Variables specified in the parent resource set are inherited by the children.
### Caveats
Two caveats apply that users should be aware of:
1. The parent resource set can not contain any resource templates itself.
2. Only one level of nesting is supported. Specifying `include` again on a nested resource set will be ignored.
[templates]: templates.md
[cluster configuration]: cluster-config.md

153
ops/kontemplate/docs/templates.md
View file

@ -1,153 +0,0 @@
Kontemplate templates
=====================
The template file format is based on Go's [templating engine][] in combination
with a small extension library called [sprig][] that adds additional template
functions.
Go templates can either simply display variables or build more complicated
*pipelines* in which variables are passed to functions for further processing,
or in which conditionals are evaluated for more complex template logic.
It is recommended that you check out the Golang [documentation][] for the templating
engine in addition to the cherry-picked features listed here.
<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc -->
**Table of Contents**
- [Kontemplate templates](#kontemplate-templates)
- [Basic variable interpolation](#basic-variable-interpolation)
- [Example:](#example)
- [Template functions](#template-functions)
- [Examples:](#examples)
- [Conditionals & ranges](#conditionals--ranges)
- [Caveats](#caveats)
<!-- markdown-toc end -->
## Basic variable interpolation
The basic template format uses `{{ .variableName }}` as the interpolation format.
### Example:
Assuming that you include a resource set as such:
```
- name: api-gateway
values:
internalHost: http://my-internal-host/
```
And the api-gateway resource set includes a ConfigMap (some fields left out for
the example):
```
# api-gateway/configmap.yaml:
---
kind: ConfigMap
metadata:
name: api-gateway-config
data:
internalHost: {{ .internalHost }}
```
The resulting output will be:
```
---
kind: ConfigMap
metadata:
name: api-gateway-config
data:
internalHost: http://my-internal-host/
```
## Template functions
Go templates support template functions which you can think of as a sort of
shell-like pipeline where text flows through transformations from left to
right.
Some template functions come from Go's standard library and are listed in the
[Go documentation][]. In addition the functions declared by [sprig][] are
available in kontemplate, as well as five custom functions:
* `json`: Encodes any supplied data structure as JSON.
* `gitHEAD`: Retrieves the commit hash at Git `HEAD`.
* `passLookup`: Looks up the supplied key in [pass][].
* `insertFile`: Insert the contents of the given file in the resource
set folder as a string.
* `insertTemplate`: Insert the contents of the given template in the resource
set folder as a string.
## Examples:
```
# With the following values:
name: Donald
certKeyPath: my-website/cert-key
# The following interpolations are possible:
{{ .name | upper }}
-> DONALD
{{ .name | upper | repeat 2 }}
-> DONALD DONALD
{{ .certKeyPath | passLookup }}
-> Returns content of 'my-website/cert-key' from pass
{{ gitHEAD }}
-> Returns the Git commit hash at HEAD.
```
## Conditionals & ranges
Some logic is supported in Golang templates and can be used in Kontemplate, too.
With the following values:
```
useKube2IAM: true
servicePorts:
- 8080
- 9090
```
The following interpolations are possible:
```
# Conditionally insert something in the template:
metadata:
annotations:
foo: bar
{{ if .useKube2IAM -}} iam.amazonaws.com/role: my-api {{- end }}
```
```
# Iterate over a list of values
ports:
{{ range .servicePorts }}
- port: {{ . }}
{{ end }}
```
Check out the Golang documentation (linked above) for more information about template logic.
## Caveats
Kontemplate does not by itself parse any of the content of the templates, which
means that it does not validate whether the resources you supply are valid YAML
or JSON.
You can perform some validation by using `kontemplate apply --dry-run` which
will make use of the Dry-Run functionality in `kubectl`.
[templating engine]: https://golang.org/pkg/text/template/
[documentation]: https://golang.org/pkg/text/template/
[sprig]: http://masterminds.github.io/sprig/
[Go documentation]: https://golang.org/pkg/text/template/#hdr-Functions
[pass]: https://www.passwordstore.org/

77
ops/kontemplate/docs/tips-and-tricks.md
View file

@ -1,77 +0,0 @@
Kontemplate tips & tricks
=========================
<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc -->
**Table of Contents**
- [Kontemplate tips & tricks](#kontemplate-tips--tricks)
- [Update Deployments when ConfigMaps change](#update-deployments-when-configmaps-change)
- [direnv & pass](#direnv--pass)
<!-- markdown-toc end -->
## Update Deployments when ConfigMaps change
Kubernetes does [not currently][] have the ability to perform rolling updates
of Deployments and other resource types when `ConfigMap` or `Secret` objects
are updated.
It is possible to make use of annotations and templating functions in
Kontemplate to force updates to these resources anyways.
For example:
```yaml
# A ConfigMap that contains some configuration for your app
---
kind: ConfigMap
metadata:
name: app-config
data:
app.conf: |
name: {{ .appName }}
foo: bar
```
Now whenever the `appName` variable changes or we make an edit to the
`ConfigMap` we would like to update the `Deployment` making use of it, too. We
can do this by adding a hash of the parsed template to the annotations of the
created `Pod` objects:
```yaml
---
kind: Deployment
metadata:
name: app
spec:
template:
metadata:
annotations:
configHash: {{ insertTemplate "app-config.yaml" | sha256sum }}
spec:
containers:
- name: app
# Some details omitted ...
volumeMounts:
- name: config
mountPath: /etc/app/
volumes:
- name: config
configMap:
name: app-config
```
Now any change to the `ConfigMap` - either by directly editing the yaml file or
via a changed template variable - will cause the annotation to change,
triggering a rolling update of all relevant pods.
## direnv & pass
Users of `pass` may have multiple different password stores on their machines.
Assuming that `kontemplate` configuration exists somewhere on the filesystem
per project, it is easy to use [direnv][] to switch to the correct
`PASSWORD_STORE_DIR` variable when entering the folder.
[not currently]: https://github.com/kubernetes/kubernetes/issues/22368
[direnv]: https://direnv.net/

7
ops/kontemplate/example/other-config.yaml
View file

@ -1,7 +0,0 @@
---
apiVersion: extensions/v1beta1
kind: ConfigMap
metadata:
name: other-config
data:
globalData: {{ .globalVar }}

16
ops/kontemplate/example/prod-cluster.json
View file

@ -1,16 +0,0 @@
{
"context": "k8s.prod.mydomain.com",
"global": {
"globalVar": "lizards"
},
"include": [
{
"name": "some-api",
"values": {
"version": "1.0-SNAPSHOT-0e6884d",
"importantFeature": true,
"apiPort": 4567
}
}
]
}

17
ops/kontemplate/example/prod-cluster.yaml
View file

@ -1,17 +0,0 @@
---
context: k8s.prod.mydomain.com
global:
globalVar: lizards
include:
# By default resource sets are included from a folder with the same
# name as the resource set's name
- name: some-api
values:
version: 1.0-0e6884d
importantFeature: true
apiPort: 4567
# Paths can also be specified manually (and point at single template
# files!)
- name: other-config
path: other-config.yaml

52
ops/kontemplate/example/some-api/some-api.yaml
View file

@ -1,52 +0,0 @@
---
apiVersion: v1
kind: Secret
metadata:
name: secret-certificate
data:
cert.pem: {{ passLookup "my/secret/certificate" | b64enc }}
---
apiVersion: extensions/v1beta1
kind: ConfigMap
metadata:
name: some-config
data:
# The content of the example configuration file is templated in here
# by the 'insertFile' function and indented for YAML-compatibility
# with the 'indent' function:
some.cfg: |
{{ insertFile "some.cfg" | indent 4 }}
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: some-api
spec:
replicas: 1
template:
metadata:
labels:
app: some-api
spec:
containers:
- image: my.container.repo/some-api:{{ .version }}
name: some-api
env:
- name: ENABLE_IMPORTANT_FEATURE
value: {{ .importantFeature }}
- name: SOME_GLOBAL_VAR
value: {{ .globalVar }}
---
apiVersion: v1
kind: Service
metadata:
name: some-api
labels:
app: some-api
spec:
selector:
app: some-api
ports:
- port: 80
targetPort: {{ .apiPort }}
name: http

4
ops/kontemplate/example/some-api/some.cfg
View file

@ -1,4 +0,0 @@
{
"something": 1542,
"other-thing": "да"
}

25
ops/kontemplate/go.mod
View file

@ -1,25 +0,0 @@
module github.com/tazjin/kontemplate
go 1.22.3
require (
github.com/Masterminds/sprig/v3 v3.2.3
github.com/alecthomas/kingpin/v2 v2.4.0
github.com/ghodss/yaml v1.0.0
)
require (
github.com/Masterminds/goutils v1.1.1 // indirect
github.com/Masterminds/semver/v3 v3.2.0 // indirect
github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 // indirect
github.com/google/uuid v1.1.1 // indirect
github.com/huandu/xstrings v1.3.3 // indirect
github.com/imdario/mergo v0.3.11 // indirect
github.com/mitchellh/copystructure v1.0.0 // indirect
github.com/mitchellh/reflectwalk v1.0.0 // indirect
github.com/shopspring/decimal v1.2.0 // indirect
github.com/spf13/cast v1.3.1 // indirect
github.com/xhit/go-str2duration/v2 v2.1.0 // indirect
golang.org/x/crypto v0.3.0 // indirect
gopkg.in/yaml.v2 v2.3.0 // indirect
)

75
ops/kontemplate/go.sum
View file

@ -1,75 +0,0 @@
github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
github.com/Masterminds/semver/v3 v3.2.0 h1:3MEsd0SM6jqZojhjLWWeBY+Kcjy9i6MQAeY7YgDP83g=
github.com/Masterminds/semver/v3 v3.2.0/go.mod h1:qvl/7zhW3nngYb5+80sSMF+FG2BjYrf8m9wsX0PNOMQ=
github.com/Masterminds/sprig/v3 v3.2.3 h1:eL2fZNezLomi0uOLqjQoN6BfsDD+fyLtgbJMAj9n6YA=
github.com/Masterminds/sprig/v3 v3.2.3/go.mod h1:rXcFaZ2zZbLRJv/xSysmlgIM1u11eBaRMhvYXJNkGuM=
github.com/alecthomas/kingpin/v2 v2.4.0 h1:f48lwail6p8zpO1bC4TxtqACaGqHYA22qkHjHpqDjYY=
github.com/alecthomas/kingpin/v2 v2.4.0/go.mod h1:0gyi0zQnjuFk8xrkNKamJoyUo382HRL7ATRpFZCw6tE=
github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 h1:s6gZFSlWYmbqAuRjVTiNNhvNRfY2Wxp9nhfyel4rklc=
github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/huandu/xstrings v1.3.3 h1:/Gcsuc1x8JVbJ9/rlye4xZnVAbEkGauT8lbebqcQws4=
github.com/huandu/xstrings v1.3.3/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
github.com/imdario/mergo v0.3.11 h1:3tnifQM4i+fbajXKBHXWEH+KvNHqojZ778UH75j3bGA=
github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
github.com/mitchellh/copystructure v1.0.0 h1:Laisrj+bAB6b/yJwB5Bt3ITZhGJdqmxquMKeZ+mmkFQ=
github.com/mitchellh/copystructure v1.0.0/go.mod h1:SNtv71yrdKgLRyLFxmLdkAbkKEFWgYaq1OVrnRcwhnw=
github.com/mitchellh/reflectwalk v1.0.0 h1:9D+8oIskB4VJBN5SFlmc27fSlIBZaov1Wpk/IfikLNY=
github.com/mitchellh/reflectwalk v1.0.0/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/shopspring/decimal v1.2.0 h1:abSATXmQEYyShuxI4/vyW3tV1MrKAJzCZ/0zLUXYbsQ=
github.com/shopspring/decimal v1.2.0/go.mod h1:DKyhrW/HYNuLGql+MJL6WCR6knT2jwCFRcu2hWCYk4o=
github.com/spf13/cast v1.3.1 h1:nFm6S0SMdyzrzcmThSipiEubIDy8WEXKNZ0UOgiRpng=
github.com/spf13/cast v1.3.1/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
github.com/xhit/go-str2duration/v2 v2.1.0 h1:lxklc02Drh6ynqX+DdPyp5pCKLUQpRT8bp8Ydu2Bstc=
github.com/xhit/go-str2duration/v2 v2.1.0/go.mod h1:ohY8p+0f07DiV6Em5LKB0s2YpLtXVyJfNt1+BlmyAsU=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/crypto v0.3.0 h1:a06MkbcxBrEFc0w0QIZWXrH/9cCX6KJyWbBOIwAn+7A=
golang.org/x/crypto v0.3.0/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4=
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
golang.org/x/net v0.2.0/go.mod h1:KqCZLdyyvdV855qA2rE3GC2aiw5xGR5TEjj8smXukLY=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

15
ops/kontemplate/image/Dockerfile
View file

@ -1,15 +0,0 @@
FROM alpine:3.10
ADD hashes /root/hashes
ADD https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/linux/amd64/kubectl /usr/bin/kubectl
ADD https://github.com/tazjin/kontemplate/releases/download/v1.8.0/kontemplate-1.8.0-6c3b299-linux-amd64.tar.gz /tmp/kontemplate.tar.gz
# Pass release version is 1.7.3
ADD https://raw.githubusercontent.com/zx2c4/password-store/74fdfb5022f317ad48d449e29543710bdad1afda/src/password-store.sh /usr/bin/pass
RUN sha256sum -c /root/hashes && \
apk add -U bash tree gnupg git && \
chmod +x /usr/bin/kubectl /usr/bin/pass && \
tar xzvf /tmp/kontemplate.tar.gz && \
mv kontemplate /usr/bin/kontemplate && \
/usr/bin/kontemplate version

12
ops/kontemplate/image/README.md
View file

@ -1,12 +0,0 @@
Kontemplate Docker image
========================
This builds a simple Docker image available on the Docker Hub as `tazjin/kontemplate`.
Builds are automated based on the Dockerfile contained here.
It contains both `kontemplate` and `kubectl` and can be used as part of container-based
CI pipelines.
`pass` and its dependencies are also installed to enable the use of the `passLookup`
template function if desired.

2
ops/kontemplate/image/hashes
View file

@ -1,2 +0,0 @@
a39dfdd77e4655acaabe301285cf389cb5fc8145060f5677dc93db1cc20911a4 /tmp/kontemplate.tar.gz
6e805054a1fb2280abb53f75b57a1b92bf9c66ffe0d2cdcd46e81b079d93c322 /usr/bin/kubectl

242
ops/kontemplate/main.go
View file

@ -1,242 +0,0 @@
// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in>
//
// Kontemplate is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"fmt"
"os"
"os/exec"
"strings"
"github.com/alecthomas/kingpin/v2"
"github.com/tazjin/kontemplate/context"
"github.com/tazjin/kontemplate/templater"
)
const version string = "1.8.0"
// This variable will be initialised by the Go linker during the builder
var gitHash string
var (
app = kingpin.New("kontemplate", "simple Kubernetes resource templating")
// Global flags
includes = app.Flag("include", "Resource sets to include explicitly").Short('i').Strings()
excludes = app.Flag("exclude", "Resource sets to exclude explicitly").Short('e').Strings()
variables = app.Flag("var", "Provide variables to templates explicitly").Strings()
kubectlBin = app.Flag("kubectl", "Path to the kubectl binary (default 'kubectl')").Default("kubectl").String()
// Commands
template = app.Command("template", "Template resource sets and print them")
templateFile = template.Arg("file", "Cluster configuration file to use").Required().String()
templateOutputDir = template.Flag("output", "Output directory in which to save templated files instead of printing them").Short('o').String()
apply = app.Command("apply", "Template resources and pass to 'kubectl apply'")
applyFile = apply.Arg("file", "Cluster configuration file to use").Required().String()
applyDryRun = apply.Flag("dry-run", "Print remote operations without executing them").Default("false").Bool()
replace = app.Command("replace", "Template resources and pass to 'kubectl replace'")
replaceFile = replace.Arg("file", "Cluster configuration file to use").Required().String()
delete = app.Command("delete", "Template resources and pass to 'kubectl delete'")
deleteFile = delete.Arg("file", "Cluster configuration file to use").Required().String()
create = app.Command("create", "Template resources and pass to 'kubectl create'")
createFile = create.Arg("file", "Cluster configuration file to use").Required().String()
versionCmd = app.Command("version", "Show kontemplate version")
)
func main() {
app.HelpFlag.Short('h')
switch kingpin.MustParse(app.Parse(os.Args[1:])) {
case template.FullCommand():
templateCommand()
case apply.FullCommand():
applyCommand()
case replace.FullCommand():
replaceCommand()
case delete.FullCommand():
deleteCommand()
case create.FullCommand():
createCommand()
case versionCmd.FullCommand():
versionCommand()
}
}
func versionCommand() {
if gitHash == "" {
fmt.Printf("Kontemplate version %s (git commit unknown)\n", version)
} else {
fmt.Printf("Kontemplate version %s (git commit: %s)\n", version, gitHash)
}
}
func templateCommand() {
_, resourceSets := loadContextAndResources(templateFile)
for _, rs := range *resourceSets {
if len(rs.Resources) == 0 {
fmt.Fprintf(os.Stderr, "Warning: Resource set '%s' does not exist or contains no valid templates\n", rs.Name)
continue
}
if *templateOutputDir != "" {
templateIntoDirectory(templateOutputDir, rs)
} else {
for _, r := range rs.Resources {
fmt.Fprintf(os.Stderr, "Rendered file %s/%s:\n", rs.Name, r.Filename)
fmt.Println(r.Rendered)
}
}
}
}
func templateIntoDirectory(outputDir *string, rs templater.RenderedResourceSet) {
// Attempt to create the output directory if it does not
// already exist:
if err := os.MkdirAll(*templateOutputDir, 0775); err != nil {
app.Fatalf("Could not create output directory: %v\n", err)
}
// Nested resource sets may contain slashes in their names.
// These are replaced with dashes for the purpose of writing a
// flat list of output files:
setName := strings.Replace(rs.Name, "/", "-", -1)
for _, r := range rs.Resources {
filename := fmt.Sprintf("%s/%s-%s", *templateOutputDir, setName, r.Filename)
fmt.Fprintf(os.Stderr, "Writing file %s\n", filename)
file, err := os.Create(filename)
if err != nil {
app.Fatalf("Could not create file %s: %v\n", filename, err)
}
_, err = fmt.Fprintf(file, r.Rendered)
if err != nil {
app.Fatalf("Error writing file %s: %v\n", filename, err)
}
}
}
func applyCommand() {
ctx, resources := loadContextAndResources(applyFile)
var kubectlArgs []string
if *applyDryRun {
kubectlArgs = []string{"apply", "-f", "-", "--dry-run"}
} else {
kubectlArgs = []string{"apply", "-f", "-"}
}
if err := runKubectlWithResources(ctx, &kubectlArgs, resources); err != nil {
failWithKubectlError(err)
}
}
func replaceCommand() {
ctx, resources := loadContextAndResources(replaceFile)
args := []string{"replace", "--save-config=true", "-f", "-"}
if err := runKubectlWithResources(ctx, &args, resources); err != nil {
failWithKubectlError(err)
}
}
func deleteCommand() {
ctx, resources := loadContextAndResources(deleteFile)
args := []string{"delete", "-f", "-"}
if err := runKubectlWithResources(ctx, &args, resources); err != nil {
failWithKubectlError(err)
}
}
func createCommand() {
ctx, resources := loadContextAndResources(createFile)
args := []string{"create", "--save-config=true", "-f", "-"}
if err := runKubectlWithResources(ctx, &args, resources); err != nil {
failWithKubectlError(err)
}
}
func loadContextAndResources(file *string) (*context.Context, *[]templater.RenderedResourceSet) {
ctx, err := context.LoadContext(*file, variables)
if err != nil {
app.Fatalf("Error loading context: %v\n", err)
}
resources, err := templater.LoadAndApplyTemplates(includes, excludes, ctx)
if err != nil {
app.Fatalf("Error templating resource sets: %v\n", err)
}
return ctx, &resources
}
func runKubectlWithResources(c *context.Context, kubectlArgs *[]string, resourceSets *[]templater.RenderedResourceSet) error {
argsWithContext := append(*kubectlArgs, fmt.Sprintf("--context=%s", c.Name))
for _, rs := range *resourceSets {
if len(rs.Resources) == 0 {
fmt.Fprintf(os.Stderr, "Warning: Resource set '%s' contains no valid templates\n", rs.Name)
continue
}
argsWithResourceSetArgs := append(argsWithContext, rs.Args...)
kubectl := exec.Command(*kubectlBin, argsWithResourceSetArgs...)
stdin, err := kubectl.StdinPipe()
if err != nil {
return fmt.Errorf("kubectl error: %v", err)
}
kubectl.Stdout = os.Stdout
kubectl.Stderr = os.Stderr
if err = kubectl.Start(); err != nil {
return fmt.Errorf("kubectl error: %v", err)
}
for _, r := range rs.Resources {
fmt.Printf("Passing file %s/%s to kubectl\n", rs.Name, r.Filename)
fmt.Fprintln(stdin, r.Rendered)
}
stdin.Close()
if err = kubectl.Wait(); err != nil {
return err
}
}
return nil
}
func failWithKubectlError(err error) {
app.Fatalf("Kubectl error: %v\n", err)
}

58
ops/kontemplate/release.nix
View file

@ -1,58 +0,0 @@
# Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in>
#
# This file is part of Kontemplate.
#
# Kontemplate is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This file is the Nix derivation used to build release binaries for
# several different architectures and operating systems.
let
pkgs = import
((import <nixpkgs> { }).fetchFromGitHub {
owner = "NixOS";
repo = "nixpkgs-channels";
rev = "541d9cce8af7a490fb9085305939569567cb58e6";
sha256 = "0jgz72hhzkd5vyq5v69vpljjlnf0lqaz7fh327bvb3cvmwbfxrja";
})
{ };
in
with pkgs; buildGoPackage rec {
name = "kontemplate-${version}";
version = "canon";
src = ./.;
goPackagePath = "github.com/tazjin/kontemplate";
goDeps = ./deps.nix;
# This configuration enables the building of statically linked
# executables. For some reason, those will have multiple references
# to the Go compiler's installation path in them, which is the
# reason for setting the 'allowGoReference' flag.
dontStrip = true; # Linker configuration handles stripping
allowGoReference = true;
CGO_ENABLED = "0";
GOCACHE = "off";
# Configure release builds via the "build-matrix" script:
buildInputs = [ git ];
buildPhase = ''
cd go/src/${goPackagePath}
patchShebangs build-release.sh
./build-release.sh build
'';
outputs = [ "out" ];
installPhase = ''
mkdir $out
cp -r release/ $out
'';
meta = with lib; {
description = "A resource templating helper for Kubernetes";
homepage = "http://kontemplate.works/";
license = licenses.gpl3;
};
}

35
ops/kontemplate/templater/dns.go
View file

@ -1,35 +0,0 @@
// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in>
//
// This file is part of Kontemplate.
//
// Kontemplate is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This file contains the implementation of a template function for retrieving
// IP addresses from DNS
package templater
import (
"fmt"
"net"
"os"
)
func GetIPsFromDNS(host string) ([]interface{}, error) {
fmt.Fprintf(os.Stderr, "Attempting to look up IP for %s in DNS\n", host)
ips, err := net.LookupIP(host)
if err != nil {
return nil, fmt.Errorf("IP address lookup failed: %v", err)
}
var result []interface{} = make([]interface{}, len(ips))
for i, ip := range ips {
result[i] = ip
}
return result, nil
}

34
ops/kontemplate/templater/pass.go
View file

@ -1,34 +0,0 @@
// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in>
//
// This file is part of Kontemplate.
//
// Kontemplate is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This file contains the implementation of a template function for retrieving
// variables from 'pass', the standard UNIX password manager.
package templater
import (
"fmt"
"os"
"os/exec"
"strings"
)
func GetFromPass(key string) (string, error) {
fmt.Fprintf(os.Stderr, "Attempting to look up %s in pass\n", key)
pass := exec.Command("pass", "show", key)
output, err := pass.CombinedOutput()
if err != nil {
return "", fmt.Errorf("Pass lookup failed: %s (%v)", output, err)
}
trimmed := strings.TrimSpace(string(output))
return trimmed, nil
}

236
ops/kontemplate/templater/templater.go
View file

@ -1,236 +0,0 @@
// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in>
//
// This file is part of Kontemplate.
//
// Kontemplate is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
package templater
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"os"
"os/exec"
"path"
"strings"
"text/template"
"github.com/Masterminds/sprig/v3"
"github.com/tazjin/kontemplate/context"
"github.com/tazjin/kontemplate/util"
)
const failOnMissingKeys string = "missingkey=error"
type RenderedResource struct {
Filename string
Rendered string
}
type RenderedResourceSet struct {
Name string
Resources []RenderedResource
Args []string
}
func LoadAndApplyTemplates(include *[]string, exclude *[]string, c *context.Context) ([]RenderedResourceSet, error) {
limitedResourceSets := applyLimits(&c.ResourceSets, include, exclude)
renderedResourceSets := make([]RenderedResourceSet, 0)
if len(*limitedResourceSets) == 0 {
return renderedResourceSets, fmt.Errorf("No valid resource sets included!")
}
for _, rs := range *limitedResourceSets {
set, err := processResourceSet(c, &rs)
if err != nil {
return nil, err
}
renderedResourceSets = append(renderedResourceSets, *set)
}
return renderedResourceSets, nil
}
func processResourceSet(ctx *context.Context, rs *context.ResourceSet) (*RenderedResourceSet, error) {
fmt.Fprintf(os.Stderr, "Loading resources for %s\n", rs.Name)
fileInfo, err := os.Stat(rs.Path)
if err != nil {
return nil, err
}
var files []os.FileInfo
var resources []RenderedResource
// Treat single-file resource paths separately from resource
// sets containing multiple templates
if fileInfo.IsDir() {
// Explicitly discard this error, which will give us an empty
// list of files instead.
// This will end up printing a warning to the user, but it
// won't stop the rest of the process.
files, _ = ioutil.ReadDir(rs.Path)
resources, err = processFiles(ctx, rs, files)
if err != nil {
return nil, err
}
} else {
resource, err := templateFile(ctx, rs, rs.Path)
if err != nil {
return nil, err
}
resources = []RenderedResource{resource}
}
return &RenderedResourceSet{
Name: rs.Name,
Resources: resources,
Args: rs.Args,
}, nil
}
func processFiles(ctx *context.Context, rs *context.ResourceSet, files []os.FileInfo) ([]RenderedResource, error) {
resources := make([]RenderedResource, 0)
for _, file := range files {
if !file.IsDir() && isResourceFile(file) {
path := path.Join(rs.Path, file.Name())
res, err := templateFile(ctx, rs, path)
if err != nil {
return resources, err
}
resources = append(resources, res)
}
}
return resources, nil
}
func templateFile(ctx *context.Context, rs *context.ResourceSet, filepath string) (RenderedResource, error) {
var resource RenderedResource
tpl, err := template.New(path.Base(filepath)).Funcs(templateFuncs(ctx, rs)).Option(failOnMissingKeys).ParseFiles(filepath)
if err != nil {
return resource, fmt.Errorf("Could not load template %s: %v", filepath, err)
}
var b bytes.Buffer
err = tpl.Execute(&b, rs.Values)
if err != nil {
return resource, fmt.Errorf("Error while templating %s: %v", filepath, err)
}
resource = RenderedResource{
Filename: path.Base(filepath),
Rendered: b.String(),
}
return resource, nil
}
// Applies the limits of explicitly included or excluded resources and returns the updated resource set.
// Exclude takes priority over include
func applyLimits(rs *[]context.ResourceSet, include *[]string, exclude *[]string) *[]context.ResourceSet {
if len(*include) == 0 && len(*exclude) == 0 {
return rs
}
// Exclude excluded resource sets
excluded := make([]context.ResourceSet, 0)
for _, r := range *rs {
if !matchesResourceSet(exclude, &r) {
excluded = append(excluded, r)
}
}
// Include included resource sets
if len(*include) == 0 {
return &excluded
}
included := make([]context.ResourceSet, 0)
for _, r := range excluded {
if matchesResourceSet(include, &r) {
included = append(included, r)
}
}
return &included
}
// Check whether an include/exclude string slice matches a resource set
func matchesResourceSet(s *[]string, rs *context.ResourceSet) bool {
for _, r := range *s {
r = strings.TrimSuffix(r, "/")
if r == rs.Name || r == rs.Parent {
return true
}
}
return false
}
func templateFuncs(c *context.Context, rs *context.ResourceSet) template.FuncMap {
m := sprig.TxtFuncMap()
m["json"] = func(data interface{}) string {
b, _ := json.Marshal(data)
return string(b)
}
m["passLookup"] = GetFromPass
m["gitHEAD"] = func() (string, error) {
out, err := exec.Command("git", "-C", c.BaseDir, "rev-parse", "HEAD").Output()
if err != nil {
return "", err
}
output := strings.TrimSpace(string(out))
return output, nil
}
m["lookupIPAddr"] = GetIPsFromDNS
m["insertFile"] = func(file string) (string, error) {
data, err := ioutil.ReadFile(path.Join(rs.Path, file))
if err != nil {
return "", err
}
return string(data), nil
}
m["insertTemplate"] = func(file string) (string, error) {
data, err := templateFile(c, rs, path.Join(rs.Path, file))
if err != nil {
return "", err
}
return data.Rendered, nil
}
m["default"] = func(defaultVal interface{}, varName string) interface{} {
if val, ok := rs.Values[varName]; ok {
return val
}
return defaultVal
}
return m
}
// Checks whether a file is a resource file (i.e. is YAML or JSON) and not a default values file.
func isResourceFile(f os.FileInfo) bool {
for _, defaultFile := range util.DefaultFilenames {
if f.Name() == defaultFile {
return false
}
}
return strings.HasSuffix(f.Name(), "yaml") ||
strings.HasSuffix(f.Name(), "yml") ||
strings.HasSuffix(f.Name(), "json")
}

205
ops/kontemplate/templater/templater_test.go
View file

@ -1,205 +0,0 @@
// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in>
//
// This file is part of Kontemplate.
//
// Kontemplate is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
package templater
import (
"github.com/tazjin/kontemplate/context"
"reflect"
"strings"
"testing"
)
func TestApplyNoLimits(t *testing.T) {
resources := []context.ResourceSet{
{
Name: "testResourceSet1",
},
{
Name: "testResourceSet2",
},
}
result := applyLimits(&resources, &[]string{}, &[]string{})
if !reflect.DeepEqual(resources, *result) {
t.Error("Resource set slice changed, but shouldn't have.")
t.Errorf("Expected: %v\nResult: %v\n", resources, *result)
t.Fail()
}
}
func TestApplyIncludeLimits(t *testing.T) {
resources := []context.ResourceSet{
{
Name: "testResourceSet1",
},
{
Name: "testResourceSet2",
},
{
Name: "testResourceSet3",
Parent: "included",
},
}
includes := []string{"testResourceSet1", "included"}
result := applyLimits(&resources, &includes, &[]string{})
expected := []context.ResourceSet{
{
Name: "testResourceSet1",
},
{
Name: "testResourceSet3",
Parent: "included",
},
}
if !reflect.DeepEqual(expected, *result) {
t.Error("Result does not contain expected resource sets.")
t.Errorf("Expected: %v\nResult: %v\n", expected, *result)
t.Fail()
}
}
func TestApplyExcludeLimits(t *testing.T) {
resources := []context.ResourceSet{
{
Name: "testResourceSet1",
},
{
Name: "testResourceSet2",
},
{
Name: "testResourceSet3",
Parent: "included",
},
}
exclude := []string{"testResourceSet2"}
result := applyLimits(&resources, &[]string{}, &exclude)
expected := []context.ResourceSet{
{
Name: "testResourceSet1",
},
{
Name: "testResourceSet3",
Parent: "included",
},
}
if !reflect.DeepEqual(expected, *result) {
t.Error("Result does not contain expected resource sets.")
t.Errorf("Expected: %v\nResult: %v\n", expected, *result)
t.Fail()
}
}
func TestApplyLimitsExcludeIncludePrecedence(t *testing.T) {
resources := []context.ResourceSet{
{
Name: "collection/nested1",
Parent: "collection",
},
{
Name: "collection/nested2",
Parent: "collection",
},
{
Name: "collection/nested3",
Parent: "collection",
},
{
Name: "something-else",
},
}
include := []string{"collection"}
exclude := []string{"collection/nested2"}
result := applyLimits(&resources, &include, &exclude)
expected := []context.ResourceSet{
{
Name: "collection/nested1",
Parent: "collection",
},
{
Name: "collection/nested3",
Parent: "collection",
},
}
if !reflect.DeepEqual(expected, *result) {
t.Error("Result does not contain expected resource sets.")
t.Errorf("Expected: %v\nResult: %v\n", expected, *result)
t.Fail()
}
}
func TestFailOnMissingKeys(t *testing.T) {
ctx := context.Context{}
resourceSet := context.ResourceSet{}
_, err := templateFile(&ctx, &resourceSet, "testdata/test-template.txt")
if err == nil {
t.Errorf("Template with missing keys should have failed.\n")
t.Fail()
}
if !strings.Contains(err.Error(), "map has no entry for key \"testName\"") {
t.Errorf("Templating failed with unexpected error: %v\n", err)
}
}
func TestDefaultTemplateFunction(t *testing.T) {
ctx := context.Context{}
resourceSet := context.ResourceSet{}
res, err := templateFile(&ctx, &resourceSet, "testdata/test-default.txt")
if err != nil {
t.Errorf("Templating with default values should have succeeded.\n")
t.Fail()
}
if res.Rendered != "defaultValue\n" {
t.Error("Result does not contain expected rendered default value.")
t.Fail()
}
}
func TestInsertTemplateFunction(t *testing.T) {
ctx := context.Context{}
resourceSet := context.ResourceSet{
Path: "testdata",
Values: map[string]interface{}{
"testName": "TestInsertTemplateFunction",
},
}
res, err := templateFile(&ctx, &resourceSet, "testdata/test-insertTemplate.txt")
if err != nil {
t.Error(err)
t.Errorf("Templating with an insertTemplate call should have succeeded.\n")
t.Fail()
}
if res.Rendered != "Inserting \"Template for test TestInsertTemplateFunction\".\n" {
t.Error("Result does not contain expected rendered template value.")
t.Error(res.Rendered)
t.Fail()
}
}

1
ops/kontemplate/templater/testdata/test-default.txt vendored
View file

@ -1 +0,0 @@
{{ default "defaultValue" "missingVar" }}

1
ops/kontemplate/templater/testdata/test-insertTemplate.txt vendored
View file

@ -1 +0,0 @@
Inserting "{{ insertTemplate "test-template.txt" | trim }}".

1
ops/kontemplate/templater/testdata/test-template.txt vendored
View file

@ -1 +0,0 @@
Template for test {{ .testName }}

74
ops/kontemplate/util/util.go
View file

@ -1,74 +0,0 @@
// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in>
//
// This file is part of Kontemplate.
//
// Kontemplate is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
package util
import (
"io/ioutil"
"github.com/ghodss/yaml"
)
// Filenames excluded from templating for the purpose of containing default variable values inside a resource set.
var DefaultFilenames []string = []string{"default.yml", "default.yaml", "default.json"}
// Merges two maps together. Values from the second map override values in the first map.
// The returned map is new if anything was changed.
func Merge(in1 *map[string]interface{}, in2 *map[string]interface{}) *map[string]interface{} {
if in1 == nil || len(*in1) == 0 {
return in2
}
if in2 == nil || len(*in2) == 0 {
return in1
}
// The maps are map[string]interface{} with unknown depth.
// Loop over both maps into every level and merge them.
new := make(map[string]interface{})
for k, v := range *in1 {
new[k] = v
}
for k, v := range *in2 {
if existing, ok := new[k]; ok {
// If both values are maps, merge them recursively
if existingMap, ok := existing.(map[string]interface{}); ok {
if newMap, ok := v.(map[string]interface{}); ok {
new[k] = *Merge(&existingMap, &newMap)
} else {
new[k] = v
}
} else {
new[k] = v
}
} else {
new[k] = v
}
}
return &new
}
// Loads either a YAML or JSON file from the specified path and
// deserialises it into the provided interface.
func LoadData(filename string, addr interface{}) error {
file, err := ioutil.ReadFile(filename)
if err != nil {
return err
}
err = yaml.Unmarshal(file, addr)
if err != nil {
return err
}
return nil
}

89
ops/kontemplate/util/util_test.go
View file

@ -1,89 +0,0 @@
// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in>
//
// This file is part of Kontemplate.
//
// Kontemplate is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
package util
import (
"reflect"
"testing"
)
func TestMergeWithEmptyMap(t *testing.T) {
testMap := map[string]interface{}{
"foo": "bar",
}
empty := make(map[string]interface{})
res1 := Merge(&testMap, &empty)
res2 := Merge(&empty, &testMap)
if res1 != &testMap || res2 != &testMap {
t.Error("A new map was returned incorrectly.")
t.Fail()
}
}
func TestMergeWithNilMap(t *testing.T) {
testMap := map[string]interface{}{
"foo": "bar",
}
res1 := Merge(&testMap, nil)
res2 := Merge(nil, &testMap)
if res1 != &testMap || res2 != &testMap {
t.Error("A new map was returned incorrectly.")
t.Fail()
}
}
func TestMergeMaps(t *testing.T) {
map1 := map[string]interface{}{
"foo": "bar",
"baz": map[string]interface{}{
"qux": "quux",
},
}
map2 := map[string]interface{}{
"bar": "baz",
}
result := Merge(&map1, &map2)
expected := map[string]interface{}{
"foo": "bar",
"baz": map[string]interface{}{
"qux": "quux",
},
"bar": "baz",
}
if !reflect.DeepEqual(*result, expected) {
t.Error("Maps were merged incorrectly.")
t.Fail()
}
}
func TestMergeMapsPrecedence(t *testing.T) {
map1 := map[string]interface{}{
"foo": "incorrect",
}
map2 := map[string]interface{}{
"foo": "correct",
}
result := Merge(&map1, &map2)
if (*result)["foo"] != "correct" {
t.Error("Map merge precedence test failed.")
t.Fail()
}
}