lix/src/libstore/remote-store.hh
Eelco Dolstra e0204f8d46 Move path info caching from BinaryCacheStore to Store
Caching path info is generally useful. For instance, it speeds up "nix
path-info -rS /run/current-system" (i.e. showing the closure sizes of
all paths in the closure of the current system) from 5.6s to 0.15s.

This also eliminates some APIs like Store::queryDeriver() and
Store::queryReferences().
2016-04-19 18:52:53 +02:00

111 lines
2.8 KiB
C++

#pragma once
#include <limits>
#include <string>
#include "store-api.hh"
namespace nix {
class Pipe;
class Pid;
struct FdSink;
struct FdSource;
template<typename T> class Pool;
/* FIXME: RemoteStore is a misnomer - should be something like
DaemonStore. */
class RemoteStore : public LocalFSStore
{
public:
RemoteStore(size_t maxConnections = std::numeric_limits<size_t>::max());
/* Implementations of abstract store API methods. */
bool isValidPathUncached(const Path & path) override;
PathSet queryValidPaths(const PathSet & paths) override;
PathSet queryAllValidPaths() override;
std::shared_ptr<ValidPathInfo> queryPathInfoUncached(const Path & path) override;
void queryReferrers(const Path & path, PathSet & referrers) override;
PathSet queryValidDerivers(const Path & path) override;
PathSet queryDerivationOutputs(const Path & path) override;
StringSet queryDerivationOutputNames(const Path & path) override;
Path queryPathFromHashPart(const string & hashPart) override;
PathSet querySubstitutablePaths(const PathSet & paths) override;
void querySubstitutablePathInfos(const PathSet & paths,
SubstitutablePathInfos & infos) override;
Path addToStore(const string & name, const Path & srcPath,
bool recursive = true, HashType hashAlgo = htSHA256,
PathFilter & filter = defaultPathFilter, bool repair = false) override;
Path addTextToStore(const string & name, const string & s,
const PathSet & references, bool repair = false) override;
void exportPath(const Path & path, bool sign,
Sink & sink) override;
Paths importPaths(bool requireSignature, Source & source,
std::shared_ptr<FSAccessor> accessor) override;
void buildPaths(const PathSet & paths, BuildMode buildMode) override;
BuildResult buildDerivation(const Path & drvPath, const BasicDerivation & drv,
BuildMode buildMode) override;
void ensurePath(const Path & path) override;
void addTempRoot(const Path & path) override;
void addIndirectRoot(const Path & path) override;
void syncWithGC() override;
Roots findRoots() override;
void collectGarbage(const GCOptions & options, GCResults & results) override;
void optimiseStore() override;
bool verifyStore(bool checkContents, bool repair) override;
void addSignatures(const Path & storePath, const StringSet & sigs) override;
private:
struct Connection
{
AutoCloseFD fd;
FdSink to;
FdSource from;
unsigned int daemonVersion;
~Connection();
void processStderr(Sink * sink = 0, Source * source = 0);
};
ref<Pool<Connection>> connections;
ref<Connection> openConnection();
void setOptions(ref<Connection> conn);
};
}