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#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;
struct ConnectionHandle;
struct RemoteStoreConfig : virtual StoreConfig
{
using StoreConfig::StoreConfig;
const Setting<int> maxConnections{(StoreConfig*) this, 1,
"max-connections", "maximum number of concurrent connections to the Nix daemon"};
const Setting<unsigned int> maxConnectionAge{(StoreConfig*) this, std::numeric_limits<unsigned int>::max(),
"max-connection-age", "number of seconds to reuse a connection"};
};
/* FIXME: RemoteStore is a misnomer - should be something like
DaemonStore. */
class RemoteStore : public virtual Store, public virtual RemoteStoreConfig
{
public:
virtual bool sameMachine() = 0;
RemoteStore(const Params & params);
/* Implementations of abstract store API methods. */
bool isValidPathUncached(const StorePath & path) override;
StorePathSet queryValidPaths(const StorePathSet & paths,
SubstituteFlag maybeSubstitute = NoSubstitute) override;
StorePathSet queryAllValidPaths() override;
void queryPathInfoUncached(const StorePath & path,
Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept override;
void queryReferrers(const StorePath & path, StorePathSet & referrers) override;
StorePathSet queryValidDerivers(const StorePath & path) override;
StorePathSet queryDerivationOutputs(const StorePath & path) override;
std::map<std::string, std::optional<StorePath>> queryPartialDerivationOutputMap(const StorePath & path) override;
std::optional<StorePath> queryPathFromHashPart(const std::string & hashPart) override;
StorePathSet querySubstitutablePaths(const StorePathSet & paths) override;
void querySubstitutablePathInfos(const StorePathCAMap & paths,
SubstitutablePathInfos & infos) override;
void addToStore(const ValidPathInfo & info, Source & nar,
RepairFlag repair, CheckSigsFlag checkSigs) override;
StorePath addToStore(const string & name, const Path & srcPath,
FileIngestionMethod method = FileIngestionMethod::Recursive, HashType hashAlgo = htSHA256,
PathFilter & filter = defaultPathFilter, RepairFlag repair = NoRepair) override;
StorePath addTextToStore(const string & name, const string & s,
const StorePathSet & references, RepairFlag repair) override;
void buildPaths(const std::vector<StorePathWithOutputs> & paths, BuildMode buildMode) override;
BuildResult buildDerivation(const StorePath & drvPath, const BasicDerivation & drv,
BuildMode buildMode) override;
void ensurePath(const StorePath & path) override;
void addTempRoot(const StorePath & path) override;
void addIndirectRoot(const Path & path) override;
void syncWithGC() override;
Roots findRoots(bool censor) override;
void collectGarbage(const GCOptions & options, GCResults & results) override;
void optimiseStore() override;
bool verifyStore(bool checkContents, RepairFlag repair) override;
void addSignatures(const StorePath & storePath, const StringSet & sigs) override;
void queryMissing(const std::vector<StorePathWithOutputs> & targets,
StorePathSet & willBuild, StorePathSet & willSubstitute, StorePathSet & unknown,
uint64_t & downloadSize, uint64_t & narSize) override;
void connect() override;
unsigned int getProtocol() override;
void flushBadConnections();
protected:
struct Connection
{
AutoCloseFD fd;
FdSink to;
FdSource from;
unsigned int daemonVersion;
std::chrono::time_point<std::chrono::steady_clock> startTime;
virtual ~Connection();
std::exception_ptr processStderr(Sink * sink = 0, Source * source = 0, bool flush = true);
};
ref<Connection> openConnectionWrapper();
virtual ref<Connection> openConnection() = 0;
void initConnection(Connection & conn);
ref<Pool<Connection>> connections;
virtual void setOptions(Connection & conn);
ConnectionHandle getConnection();
friend struct ConnectionHandle;
virtual ref<FSAccessor> getFSAccessor() override;
virtual void narFromPath(const StorePath & path, Sink & sink) override;
private:
std::atomic_bool failed{false};
};
struct UDSRemoteStoreConfig : virtual LocalFSStoreConfig, virtual RemoteStoreConfig
{
UDSRemoteStoreConfig(const Store::Params & params)
: StoreConfig(params)
, LocalFSStoreConfig(params)
, RemoteStoreConfig(params)
{
}
UDSRemoteStoreConfig()
: UDSRemoteStoreConfig(Store::Params({}))
{
}
};
class UDSRemoteStore : public LocalFSStore, public RemoteStore, public virtual UDSRemoteStoreConfig
{
public:
UDSRemoteStore(const Params & params);
UDSRemoteStore(const std::string scheme, std::string path, const Params & params);
std::string getUri() override;
static std::set<std::string> uriSchemes()
{ return {"unix"}; }
bool sameMachine() override
{ return true; }
ref<FSAccessor> getFSAccessor() override
{ return LocalFSStore::getFSAccessor(); }
void narFromPath(const StorePath & path, Sink & sink) override
{ LocalFSStore::narFromPath(path, sink); }
private:
ref<RemoteStore::Connection> openConnection() override;
std::optional<std::string> path;
};
}
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