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libstore: de-callback-ify Store::queryPathInfoUncached

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Change-Id: I23a156aaff5328f67ca16ccd85c0ea1711b21e35
This commit is contained in:
eldritch horrors 2024-04-27 21:24:36 +02:00
parent c77bd88259
commit 2f4a1dd6e0
11 changed files with 106 additions and 168 deletions
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15
src/libstore/binary-cache-store.cc
View file

@ -349,8 +349,7 @@ void BinaryCacheStore::narFromPath(const StorePath & storePath, Sink & sink)
stats.narReadBytes += narSize.length;
}
void BinaryCacheStore::queryPathInfoUncached(const StorePath & storePath,
Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept
std::shared_ptr<const ValidPathInfo> BinaryCacheStore::queryPathInfoUncached(const StorePath & storePath)
{
auto uri = getUri();
auto storePathS = printStorePath(storePath);
@ -360,17 +359,13 @@ void BinaryCacheStore::queryPathInfoUncached(const StorePath & storePath,
auto narInfoFile = narInfoFileFor(storePath);
try {
auto data = getFile(narInfoFile);
auto data = getFile(narInfoFile);
if (!data) return callback({});
if (!data) return {};
stats.narInfoRead++;
stats.narInfoRead++;
callback(std::make_shared<NarInfo>(*this, *data, narInfoFile));
} catch (...) {
callback.rethrow();
}
return std::make_shared<NarInfo>(*this, *data, narInfoFile);
}
StorePath BinaryCacheStore::addToStore(

3
src/libstore/binary-cache-store.hh
View file

@ -107,8 +107,7 @@ public:
bool isValidPathUncached(const StorePath & path) override;
void queryPathInfoUncached(const StorePath & path,
Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept override;
std::shared_ptr<const ValidPathInfo> queryPathInfoUncached(const StorePath & path) override;
std::optional<StorePath> queryPathFromHashPart(const std::string & hashPart) override;

9
src/libstore/build/local-derivation-goal.cc
View file

@ -1260,8 +1260,7 @@ struct RestrictedStore : public virtual RestrictedStoreConfig, public virtual In
return paths;
}
void queryPathInfoUncached(const StorePath & path,
Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept override
std::shared_ptr<const ValidPathInfo> queryPathInfoUncached(const StorePath & path) override
{
if (goal.isAllowed(path)) {
try {
@ -1271,12 +1270,12 @@ struct RestrictedStore : public virtual RestrictedStoreConfig, public virtual In
info->registrationTime = 0;
info->ultimate = false;
info->sigs.clear();
callback(info);
return info;
} catch (InvalidPath &) {
callback(nullptr);
return nullptr;
}
} else
callback(nullptr);
return nullptr;
};
void queryReferrers(const StorePath & path, StorePathSet & referrers) override

5
src/libstore/dummy-store.cc
View file

@ -33,10 +33,9 @@ struct DummyStore : public virtual DummyStoreConfig, public virtual Store
return *uriSchemes().begin();
}
void queryPathInfoUncached(const StorePath & path,
Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept override
std::shared_ptr<const ValidPathInfo> queryPathInfoUncached(const StorePath & path) override
{
callback(nullptr);
return nullptr;
}
/**

41
src/libstore/legacy-ssh-store.cc
View file

@ -143,36 +143,33 @@ struct LegacySSHStore : public virtual LegacySSHStoreConfig, public virtual Stor
return *uriSchemes().begin() + "://" + host;
}
void queryPathInfoUncached(const StorePath & path,
Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept override
std::shared_ptr<const ValidPathInfo> queryPathInfoUncached(const StorePath & path) override
{
try {
auto conn(connections->get());
auto conn(connections->get());
/* No longer support missing NAR hash */
assert(GET_PROTOCOL_MINOR(conn->remoteVersion) >= 4);
/* No longer support missing NAR hash */
assert(GET_PROTOCOL_MINOR(conn->remoteVersion) >= 4);
debug("querying remote host '%s' for info on '%s'", host, printStorePath(path));
debug("querying remote host '%s' for info on '%s'", host, printStorePath(path));
conn->to << ServeProto::Command::QueryPathInfos << PathSet{printStorePath(path)};
conn->to.flush();
conn->to << ServeProto::Command::QueryPathInfos << PathSet{printStorePath(path)};
conn->to.flush();
auto p = readString(conn->from);
if (p.empty()) return callback(nullptr);
auto path2 = parseStorePath(p);
assert(path == path2);
auto info = std::make_shared<ValidPathInfo>(
path,
ServeProto::Serialise<UnkeyedValidPathInfo>::read(*this, *conn));
auto p = readString(conn->from);
if (p.empty()) return nullptr;
auto path2 = parseStorePath(p);
assert(path == path2);
auto info = std::make_shared<ValidPathInfo>(
path,
ServeProto::Serialise<UnkeyedValidPathInfo>::read(*this, *conn));
if (info->narHash == Hash::dummy)
throw Error("NAR hash is now mandatory");
if (info->narHash == Hash::dummy)
throw Error("NAR hash is now mandatory");
auto s = readString(conn->from);
assert(s == "");
auto s = readString(conn->from);
assert(s == "");
callback(std::move(info));
} catch (...) { callback.rethrow(); }
return info;
}
void addToStore(const ValidPathInfo & info, Source & source,

14
src/libstore/local-store.cc
View file

@ -880,16 +880,12 @@ uint64_t LocalStore::addValidPath(State & state,
}
void LocalStore::queryPathInfoUncached(const StorePath & path,
Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept
std::shared_ptr<const ValidPathInfo> LocalStore::queryPathInfoUncached(const StorePath & path)
{
try {
callback(retrySQLite<std::shared_ptr<const ValidPathInfo>>([&]() {
auto state(_state.lock());
return queryPathInfoInternal(*state, path);
}));
} catch (...) { callback.rethrow(); }
return retrySQLite<std::shared_ptr<const ValidPathInfo>>([&]() {
auto state(_state.lock());
return queryPathInfoInternal(*state, path);
});
}

3
src/libstore/local-store.hh
View file

@ -168,8 +168,7 @@ public:
StorePathSet queryAllValidPaths() override;
void queryPathInfoUncached(const StorePath & path,
Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept override;
std::shared_ptr<const ValidPathInfo> queryPathInfoUncached(const StorePath & path) override;
void queryReferrers(const StorePath & path, StorePathSet & referrers) override;

41
src/libstore/remote-store.cc
View file

@ -304,32 +304,25 @@ void RemoteStore::querySubstitutablePathInfos(const StorePathCAMap & pathsMap, S
}
void RemoteStore::queryPathInfoUncached(const StorePath & path,
Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept
std::shared_ptr<const ValidPathInfo> RemoteStore::queryPathInfoUncached(const StorePath & path)
{
auto conn(getConnection());
conn->to << WorkerProto::Op::QueryPathInfo << printStorePath(path);
try {
std::shared_ptr<const ValidPathInfo> info;
{
auto conn(getConnection());
conn->to << WorkerProto::Op::QueryPathInfo << printStorePath(path);
try {
conn.processStderr();
} catch (Error & e) {
// Ugly backwards compatibility hack.
if (e.msg().find("is not valid") != std::string::npos)
throw InvalidPath(std::move(e.info()));
throw;
}
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 17) {
bool valid; conn->from >> valid;
if (!valid) throw InvalidPath("path '%s' is not valid", printStorePath(path));
}
info = std::make_shared<ValidPathInfo>(
StorePath{path},
WorkerProto::Serialise<UnkeyedValidPathInfo>::read(*this, *conn));
}
callback(std::move(info));
} catch (...) { callback.rethrow(); }
conn.processStderr();
} catch (Error & e) {
// Ugly backwards compatibility hack.
if (e.msg().find("is not valid") != std::string::npos)
throw InvalidPath(std::move(e.info()));
throw;
}
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 17) {
bool valid; conn->from >> valid;
if (!valid) throw InvalidPath("path '%s' is not valid", printStorePath(path));
}
return std::make_shared<ValidPathInfo>(
StorePath{path},
WorkerProto::Serialise<UnkeyedValidPathInfo>::read(*this, *conn));
}

3
src/libstore/remote-store.hh
View file

@ -53,8 +53,7 @@ public:
StorePathSet queryAllValidPaths() override;
void queryPathInfoUncached(const StorePath & path,
Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept override;
std::shared_ptr<const ValidPathInfo> queryPathInfoUncached(const StorePath & path) override;
void queryReferrers(const StorePath & path, StorePathSet & referrers) override;

131
src/libstore/store-api.cc
View file

@ -660,23 +660,6 @@ bool Store::isValidPathUncached(const StorePath & path)
}
ref<const ValidPathInfo> Store::queryPathInfo(const StorePath & storePath)
{
std::promise<ref<const ValidPathInfo>> promise;
queryPathInfo(storePath,
{[&](std::future<ref<const ValidPathInfo>> result) {
try {
promise.set_value(result.get());
} catch (...) {
promise.set_exception(std::current_exception());
}
}});
return promise.get_future().get();
}
static bool goodStorePath(const StorePath & expected, const StorePath & actual)
{
return
@ -685,64 +668,52 @@ static bool goodStorePath(const StorePath & expected, const StorePath & actual)
}
void Store::queryPathInfo(const StorePath & storePath,
Callback<ref<const ValidPathInfo>> callback) noexcept
ref<const ValidPathInfo> Store::queryPathInfo(const StorePath & storePath)
{
auto hashPart = std::string(storePath.hashPart());
try {
{
auto res = state.lock()->pathInfoCache.get(std::string(storePath.to_string()));
if (res && res->isKnownNow()) {
stats.narInfoReadAverted++;
if (!res->didExist())
throw InvalidPath("path '%s' is not valid", printStorePath(storePath));
return callback(ref<const ValidPathInfo>(res->value));
}
{
auto res = state.lock()->pathInfoCache.get(std::string(storePath.to_string()));
if (res && res->isKnownNow()) {
stats.narInfoReadAverted++;
if (!res->didExist())
throw InvalidPath("path '%s' is not valid", printStorePath(storePath));
return ref<const ValidPathInfo>(res->value);
}
}
if (diskCache) {
auto res = diskCache->lookupNarInfo(getUri(), hashPart);
if (res.first != NarInfoDiskCache::oUnknown) {
stats.narInfoReadAverted++;
{
auto state_(state.lock());
state_->pathInfoCache.upsert(std::string(storePath.to_string()),
res.first == NarInfoDiskCache::oInvalid ? PathInfoCacheValue{} : PathInfoCacheValue{ .value = res.second });
if (res.first == NarInfoDiskCache::oInvalid ||
!goodStorePath(storePath, res.second->path))
throw InvalidPath("path '%s' is not valid", printStorePath(storePath));
}
return callback(ref<const ValidPathInfo>(res.second));
}
}
} catch (...) { return callback.rethrow(); }
auto callbackPtr = std::make_shared<decltype(callback)>(std::move(callback));
queryPathInfoUncached(storePath,
{[this, storePath, hashPart, callbackPtr](std::future<std::shared_ptr<const ValidPathInfo>> fut) {
try {
auto info = fut.get();
if (diskCache)
diskCache->upsertNarInfo(getUri(), hashPart, info);
{
auto state_(state.lock());
state_->pathInfoCache.upsert(std::string(storePath.to_string()), PathInfoCacheValue { .value = info });
}
if (!info || !goodStorePath(storePath, info->path)) {
stats.narInfoMissing++;
if (diskCache) {
auto res = diskCache->lookupNarInfo(getUri(), hashPart);
if (res.first != NarInfoDiskCache::oUnknown) {
stats.narInfoReadAverted++;
{
auto state_(state.lock());
state_->pathInfoCache.upsert(std::string(storePath.to_string()),
res.first == NarInfoDiskCache::oInvalid ? PathInfoCacheValue{} : PathInfoCacheValue{ .value = res.second });
if (res.first == NarInfoDiskCache::oInvalid ||
!goodStorePath(storePath, res.second->path))
throw InvalidPath("path '%s' is not valid", printStorePath(storePath));
}
}
return ref<const ValidPathInfo>(res.second);
}
}
(*callbackPtr)(ref<const ValidPathInfo>(info));
} catch (...) { callbackPtr->rethrow(); }
}});
auto info = queryPathInfoUncached(storePath);
if (diskCache)
diskCache->upsertNarInfo(getUri(), hashPart, info);
{
auto state_(state.lock());
state_->pathInfoCache.upsert(std::string(storePath.to_string()), PathInfoCacheValue { .value = info });
}
if (!info || !goodStorePath(storePath, info->path)) {
stats.narInfoMissing++;
throw InvalidPath("path '%s' is not valid", printStorePath(storePath));
}
return ref<const ValidPathInfo>(info);
}
void Store::queryRealisation(const DrvOutput & id,
@ -852,19 +823,17 @@ StorePathSet Store::queryValidPaths(const StorePathSet & paths, SubstituteFlag m
auto doQuery = [&](const StorePath & path) {
checkInterrupt();
queryPathInfo(path, {[path, &state_, &wakeup](std::future<ref<const ValidPathInfo>> fut) {
auto state(state_.lock());
try {
auto info = fut.get();
state->valid.insert(path);
} catch (InvalidPath &) {
} catch (...) {
state->exc = std::current_exception();
}
assert(state->left);
if (!--state->left)
wakeup.notify_one();
}});
auto state(state_.lock());
try {
auto info = queryPathInfo(path);
state->valid.insert(path);
} catch (InvalidPath &) {
} catch (...) {
state->exc = std::current_exception();
}
assert(state->left);
if (!--state->left)
wakeup.notify_one();
};
for (auto & path : paths)

9
src/libstore/store-api.hh
View file

@ -366,12 +366,6 @@ public:
*/
ref<const ValidPathInfo> queryPathInfo(const StorePath & path);
/**
* Asynchronous version of queryPathInfo().
*/
void queryPathInfo(const StorePath & path,
Callback<ref<const ValidPathInfo>> callback) noexcept;
/**
* Query the information about a realisation.
*/
@ -407,8 +401,7 @@ public:
protected:
virtual void queryPathInfoUncached(const StorePath & path,
Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept = 0;
virtual std::shared_ptr<const ValidPathInfo> queryPathInfoUncached(const StorePath & path) = 0;
virtual void queryRealisationUncached(const DrvOutput &,
Callback<std::shared_ptr<const Realisation>> callback) noexcept = 0;