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RemoteStore::queryRealisationUncached(): Fix potential noexcept violation

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This commit is contained in:
Eelco Dolstra 2022-05-30 13:27:13 +02:00
parent b8faa83742
commit 6378f0bb32
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GPG key ID: 8170B4726D7198DE
1 changed files with 27 additions and 29 deletions
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56
src/libstore/remote-store.cc
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@ -718,36 +718,34 @@ void RemoteStore::registerDrvOutput(const Realisation & info)
void RemoteStore::queryRealisationUncached(const DrvOutput & id, void RemoteStore::queryRealisationUncached(const DrvOutput & id,
Callback<std::shared_ptr<const Realisation>> callback) noexcept Callback<std::shared_ptr<const Realisation>> callback) noexcept
{ {
auto conn(getConnection());
if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 27) {
warn("the daemon is too old to support content-addressed derivations, please upgrade it to 2.4");
try {
callback(nullptr);
} catch (...) { return callback.rethrow(); }
}
conn->to << wopQueryRealisation;
conn->to << id.to_string();
conn.processStderr();
auto real = [&]() -> std::shared_ptr<const Realisation> {
if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 31) {
auto outPaths = worker_proto::read(
*this, conn->from, Phantom<std::set<StorePath>> {});
if (outPaths.empty())
return nullptr;
return std::make_shared<const Realisation>(Realisation { .id = id, .outPath = *outPaths.begin() });
} else {
auto realisations = worker_proto::read(
*this, conn->from, Phantom<std::set<Realisation>> {});
if (realisations.empty())
return nullptr;
return std::make_shared<const Realisation>(*realisations.begin());
}
}();
try { try {
auto conn(getConnection());
if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 27) {
warn("the daemon is too old to support content-addressed derivations, please upgrade it to 2.4");
return callback(nullptr);
}
conn->to << wopQueryRealisation;
conn->to << id.to_string();
conn.processStderr();
auto real = [&]() -> std::shared_ptr<const Realisation> {
if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 31) {
auto outPaths = worker_proto::read(
*this, conn->from, Phantom<std::set<StorePath>> {});
if (outPaths.empty())
return nullptr;
return std::make_shared<const Realisation>(Realisation { .id = id, .outPath = *outPaths.begin() });
} else {
auto realisations = worker_proto::read(
*this, conn->from, Phantom<std::set<Realisation>> {});
if (realisations.empty())
return nullptr;
return std::make_shared<const Realisation>(*realisations.begin());
}
}();
callback(std::shared_ptr<const Realisation>(real)); callback(std::shared_ptr<const Realisation>(real));
} catch (...) { return callback.rethrow(); } } catch (...) { return callback.rethrow(); }
} }