577ebeaefb
* Unify SSH code in SSHStore and LegacySSHStore. * Fix a race starting the SSH master. We now wait synchronously for the SSH master to finish starting. This prevents the SSH clients from starting their own connections. * Don't use a master if max-connections == 1. * Add a "max-connections" store parameter. * Add a "compress" store parameter.
101 lines
2.4 KiB
C++
101 lines
2.4 KiB
C++
#include "store-api.hh"
|
|
#include "remote-store.hh"
|
|
#include "remote-fs-accessor.hh"
|
|
#include "archive.hh"
|
|
#include "worker-protocol.hh"
|
|
#include "pool.hh"
|
|
#include "ssh.hh"
|
|
|
|
namespace nix {
|
|
|
|
static std::string uriScheme = "ssh://";
|
|
|
|
class SSHStore : public RemoteStore
|
|
{
|
|
public:
|
|
|
|
SSHStore(const std::string & host, const Params & params)
|
|
: Store(params)
|
|
, RemoteStore(params)
|
|
, host(host)
|
|
, master(
|
|
host,
|
|
get(params, "ssh-key", ""),
|
|
// Use SSH master only if using more than 1 connection.
|
|
connections->capacity() > 1,
|
|
get(params, "compress", "") == "true")
|
|
{
|
|
}
|
|
|
|
std::string getUri() override
|
|
{
|
|
return uriScheme + host;
|
|
}
|
|
|
|
void narFromPath(const Path & path, Sink & sink) override;
|
|
|
|
ref<FSAccessor> getFSAccessor() override;
|
|
|
|
private:
|
|
|
|
struct Connection : RemoteStore::Connection
|
|
{
|
|
std::unique_ptr<SSHMaster::Connection> sshConn;
|
|
};
|
|
|
|
ref<RemoteStore::Connection> openConnection() override;
|
|
|
|
std::string host;
|
|
|
|
SSHMaster master;
|
|
};
|
|
|
|
|
|
class ForwardSource : public Source
|
|
{
|
|
Source & readSource;
|
|
Sink & writeSink;
|
|
public:
|
|
ForwardSource(Source & readSource, Sink & writeSink) : readSource(readSource), writeSink(writeSink) {}
|
|
size_t read(unsigned char * data, size_t len) override
|
|
{
|
|
auto res = readSource.read(data, len);
|
|
writeSink(data, len);
|
|
return res;
|
|
}
|
|
};
|
|
|
|
void SSHStore::narFromPath(const Path & path, Sink & sink)
|
|
{
|
|
auto conn(connections->get());
|
|
conn->to << wopNarFromPath << path;
|
|
conn->processStderr();
|
|
ParseSink ps;
|
|
auto fwd = ForwardSource(conn->from, sink);
|
|
parseDump(ps, fwd);
|
|
}
|
|
|
|
ref<FSAccessor> SSHStore::getFSAccessor()
|
|
{
|
|
return make_ref<RemoteFSAccessor>(ref<Store>(shared_from_this()));
|
|
}
|
|
|
|
ref<RemoteStore::Connection> SSHStore::openConnection()
|
|
{
|
|
auto conn = make_ref<Connection>();
|
|
conn->sshConn = master.startCommand("nix-daemon --stdio");
|
|
conn->to = FdSink(conn->sshConn->in.get());
|
|
conn->from = FdSource(conn->sshConn->out.get());
|
|
initConnection(*conn);
|
|
return conn;
|
|
}
|
|
|
|
static RegisterStoreImplementation regStore([](
|
|
const std::string & uri, const Store::Params & params)
|
|
-> std::shared_ptr<Store>
|
|
{
|
|
if (std::string(uri, 0, uriScheme.size()) != uriScheme) return 0;
|
|
return std::make_shared<SSHStore>(std::string(uri, uriScheme.size()), params);
|
|
});
|
|
|
|
}
|