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Factor out the unix domain socket-specific code from RemoteStore

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This commit is contained in:
Shea Levy 2016-09-02 14:15:04 -04:00
parent 7d4ccd9b17
commit 0f39633290
5 changed files with 69 additions and 36 deletions
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65
src/libstore/remote-store.cc
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@ -38,9 +38,9 @@ template<class T> T readStorePaths(Store & store, Source & from)
template PathSet readStorePaths(Store & store, Source & from);
/* TODO: Separate these store impls into different files, give them better names */
RemoteStore::RemoteStore(const Params & params, size_t maxConnections)
: LocalFSStore(params)
: Store(params)
, connections(make_ref<Pool<Connection>>(
maxConnections,
[this]() { return openConnection(); },
@ -50,13 +50,21 @@ RemoteStore::RemoteStore(const Params & params, size_t maxConnections)
}
std::string RemoteStore::getUri()
UDSRemoteStore::UDSRemoteStore(const Params & params, size_t maxConnections)
: Store(params)
, LocalFSStore(params)
, RemoteStore(params, maxConnections)
{
}
std::string UDSRemoteStore::getUri()
{
return "daemon";
}
ref<RemoteStore::Connection> RemoteStore::openConnection()
ref<RemoteStore::Connection> UDSRemoteStore::openConnection()
{
auto conn = make_ref<Connection>();
@ -84,46 +92,52 @@ ref<RemoteStore::Connection> RemoteStore::openConnection()
conn->from.fd = conn->fd.get();
conn->to.fd = conn->fd.get();
initConnection(*conn);
return conn;
}
void RemoteStore::initConnection(Connection & conn)
{
/* Send the magic greeting, check for the reply. */
try {
conn->to << WORKER_MAGIC_1;
conn->to.flush();
unsigned int magic = readInt(conn->from);
conn.to << WORKER_MAGIC_1;
conn.to.flush();
unsigned int magic = readInt(conn.from);
if (magic != WORKER_MAGIC_2) throw Error("protocol mismatch");
conn->daemonVersion = readInt(conn->from);
if (GET_PROTOCOL_MAJOR(conn->daemonVersion) != GET_PROTOCOL_MAJOR(PROTOCOL_VERSION))
conn.daemonVersion = readInt(conn.from);
if (GET_PROTOCOL_MAJOR(conn.daemonVersion) != GET_PROTOCOL_MAJOR(PROTOCOL_VERSION))
throw Error("Nix daemon protocol version not supported");
if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 10)
if (GET_PROTOCOL_MINOR(conn.daemonVersion) < 10)
throw Error("the Nix daemon version is too old");
conn->to << PROTOCOL_VERSION;
conn.to << PROTOCOL_VERSION;
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 14) {
if (GET_PROTOCOL_MINOR(conn.daemonVersion) >= 14) {
int cpu = settings.lockCPU ? lockToCurrentCPU() : -1;
if (cpu != -1)
conn->to << 1 << cpu;
conn.to << 1 << cpu;
else
conn->to << 0;
conn.to << 0;
}
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 11)
conn->to << false;
if (GET_PROTOCOL_MINOR(conn.daemonVersion) >= 11)
conn.to << false;
conn->processStderr();
conn.processStderr();
}
catch (Error & e) {
throw Error(format("cannot start daemon worker: %1%") % e.msg());
}
setOptions(conn);
return conn;
}
void RemoteStore::setOptions(ref<Connection> conn)
void RemoteStore::setOptions(Connection & conn)
{
conn->to << wopSetOptions
conn.to << wopSetOptions
<< settings.keepFailed
<< settings.keepGoing
<< settings.tryFallback
@ -137,16 +151,16 @@ void RemoteStore::setOptions(ref<Connection> conn)
<< settings.buildCores
<< settings.useSubstitutes;
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 12) {
if (GET_PROTOCOL_MINOR(conn.daemonVersion) >= 12) {
Settings::SettingsMap overrides = settings.getOverrides();
if (overrides["ssh-auth-sock"] == "")
overrides["ssh-auth-sock"] = getEnv("SSH_AUTH_SOCK");
conn->to << overrides.size();
conn.to << overrides.size();
for (auto & i : overrides)
conn->to << i.first << i.second;
conn.to << i.first << i.second;
}
conn->processStderr();
conn.processStderr();
}
@ -528,7 +542,6 @@ RemoteStore::Connection::~Connection()
{
try {
to.flush();
fd = -1;
} catch (...) {
ignoreException();
}