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nix path-info: Add --json flag

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Also, factor out JSON generation from value-to-json.{cc,hh}, and
support producing indented JSON.
This commit is contained in:
Eelco Dolstra 2016-08-26 18:55:55 +02:00
parent 9fa21765e7
commit c0a7b84748
7 changed files with 476 additions and 133 deletions
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111
src/nix/path-info.cc
View file

@ -2,6 +2,10 @@
#include "shared.hh"
#include "store-api.hh"
#include "json.hh"
#include <iomanip>
#include <algorithm>
@ -12,12 +16,14 @@ struct CmdPathInfo : StorePathsCommand
bool showSize = false;
bool showClosureSize = false;
bool showSigs = false;
bool json = false;
CmdPathInfo()
{
mkFlag('s', "size", "print size of the NAR dump of each path", &showSize);
mkFlag('S', "closure-size", "print sum size of the NAR dumps of the closure of each path", &showClosureSize);
mkFlag(0, "sigs", "show signatures", &showSigs);
mkFlag(0, "json", "produce JSON output", &json);
}
std::string name() override
@ -41,6 +47,10 @@ struct CmdPathInfo : StorePathsCommand
"To check the existence of a path in a binary cache:",
"nix path-info -r /nix/store/7qvk5c91...-geeqie-1.1 --store https://cache.nixos.org/"
},
Example{
"To print the 10 most recently added paths (using --json and the jq(1) command):",
"nix path-info --all --json | jq -r 'sort_by(.registrationTime)[-11:-1][].path'"
},
};
}
@ -50,36 +60,85 @@ struct CmdPathInfo : StorePathsCommand
for (auto & storePath : storePaths)
pathLen = std::max(pathLen, storePath.size());
for (auto storePath : storePaths) {
auto info = store->queryPathInfo(storePath);
storePath = info->path; // FIXME: screws up padding
auto getClosureSize = [&](const Path & storePath) {
size_t totalSize = 0;
PathSet closure;
store->computeFSClosure(storePath, closure, false, false);
for (auto & p : closure)
totalSize += store->queryPathInfo(p)->narSize;
return totalSize;
};
std::cout << storePath << std::string(std::max(0, (int) pathLen - (int) storePath.size()), ' ');
if (json) {
JSONList jsonRoot(std::cout, true);
if (showSize) {
std::cout << '\t' << std::setw(11) << info->narSize;
for (auto storePath : storePaths) {
auto info = store->queryPathInfo(storePath);
storePath = info->path;
auto jsonPath = jsonRoot.object();
jsonPath
.attr("path", storePath)
.attr("narHash", info->narHash.to_string())
.attr("narSize", info->narSize);
if (showClosureSize)
jsonPath.attr("closureSize", getClosureSize(storePath));
if (info->deriver != "")
jsonPath.attr("deriver", info->deriver);
{
auto jsonRefs = jsonPath.list("references");
for (auto & ref : info->references)
jsonRefs.elem(ref);
}
if (info->registrationTime)
jsonPath.attr("registrationTime", info->registrationTime);
if (info->ultimate)
jsonPath.attr("ultimate", info->ultimate);
if (info->ca != "")
jsonPath.attr("ca", info->ca);
if (!info->sigs.empty()) {
auto jsonSigs = jsonPath.list("signatures");
for (auto & sig : info->sigs)
jsonSigs.elem(sig);
}
}
if (showClosureSize) {
size_t totalSize = 0;
PathSet closure;
store->computeFSClosure(storePath, closure, false, false);
for (auto & p : closure)
totalSize += store->queryPathInfo(p)->narSize;
std::cout << '\t' << std::setw(11) << totalSize;
}
if (showSigs) {
std::cout << '\t';
Strings ss;
if (info->ultimate) ss.push_back("ultimate");
if (info->ca != "") ss.push_back("ca:" + info->ca);
for (auto & sig : info->sigs) ss.push_back(sig);
std::cout << concatStringsSep(" ", ss);
}
std::cout << std::endl;
}
else {
for (auto storePath : storePaths) {
auto info = store->queryPathInfo(storePath);
storePath = info->path; // FIXME: screws up padding
std::cout << storePath << std::string(std::max(0, (int) pathLen - (int) storePath.size()), ' ');
if (showSize)
std::cout << '\t' << std::setw(11) << info->narSize;
if (showClosureSize)
std::cout << '\t' << std::setw(11) << getClosureSize(storePath);
if (showSigs) {
std::cout << '\t';
Strings ss;
if (info->ultimate) ss.push_back("ultimate");
if (info->ca != "") ss.push_back("ca:" + info->ca);
for (auto & sig : info->sigs) ss.push_back(sig);
std::cout << concatStringsSep(" ", ss);
}
std::cout << std::endl;
}
}
}
};