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// Copyright 2021 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package com.google.devtools.build.lib.bazel.bzlmod;
import com.google.devtools.build.lib.profiler.Profiler;
import com.google.devtools.build.lib.profiler.ProfilerTask;
import com.google.devtools.build.lib.profiler.SilentCloseable;
import com.google.devtools.build.lib.server.FailureDetails;
import com.google.devtools.build.skyframe.SkyFunction;
import com.google.devtools.build.skyframe.SkyFunctionException;
import com.google.devtools.build.skyframe.SkyKey;
import com.google.devtools.build.skyframe.SkyValue;
import java.io.IOException;
import java.net.URISyntaxException;
import javax.annotation.Nullable;
/**
* A simple SkyFunction that computes a {@link RepoSpec} for the given {@link InterimModule} by
* fetching required information from its {@link Registry}.
*/
public class RepoSpecFunction implements SkyFunction {
private final RegistryFactory registryFactory;
public RepoSpecFunction(RegistryFactory registryFactory) {
this.registryFactory = registryFactory;
}
@Override
@Nullable
public SkyValue compute(SkyKey skyKey, Environment env)
throws InterruptedException, RepoSpecException {
RepoSpecKey key = (RepoSpecKey) skyKey.argument();
try (SilentCloseable c =
Profiler.instance()
.profile(ProfilerTask.BZLMOD, () -> "compute repo spec: " + key.getModuleKey())) {
return registryFactory
.getRegistryWithUrl(key.getRegistryUrl())
.getRepoSpec(
key.getModuleKey(), key.getModuleKey().getCanonicalRepoName(), env.getListener());
} catch (IOException e) {
throw new RepoSpecException(
ExternalDepsException.withCauseAndMessage(
FailureDetails.ExternalDeps.Code.ERROR_ACCESSING_REGISTRY,
e,
"Unable to get module repo spec for %s from registry",
key.getModuleKey()));
} catch (URISyntaxException e) {
// This should never happen since we obtain the registry URL from an already constructed
// registry.
throw new IllegalStateException(e);
}
}
static final class RepoSpecException extends SkyFunctionException {
RepoSpecException(ExternalDepsException cause) {
super(cause, Transience.TRANSIENT);
}
}
}