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// Copyright 2015 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.analysis;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.ArtifactPathResolver;
import com.google.devtools.build.lib.actions.BaseSpawn;
import com.google.devtools.build.lib.actions.RunfilesSupplier;
import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec;
import com.google.devtools.build.lib.vfs.PathFragment;
import java.io.IOException;
import java.util.Map;
import javax.annotation.Nullable;
/** {@link RunfilesSupplier} implementation wrapping a single {@link Runfiles} directory mapping. */
// TODO(bazel-team): Consider renaming to SingleRunfilesSupplierImpl.
@AutoCodec
public class RunfilesSupplierImpl implements RunfilesSupplier {
private final PathFragment runfilesDir;
private final Runfiles runfiles;
@Nullable
private final Artifact manifest;
/**
* Create an instance for an executable.
*
* @param executable the executable the runfiles are for, used for determining the runfiles
* directory
* @param runfiles the associated runfiles
*/
public RunfilesSupplierImpl(Artifact executable, Runfiles runfiles) {
this(BaseSpawn.runfilesForFragment(executable.getExecPath()), runfiles);
}
/**
* Create an instance. When a manifest is available consider using
* {@link #RunfilesSupplierImpl(PathFragment, Runfiles, Artifact)} instead.
*/
public RunfilesSupplierImpl(PathFragment runfilesDir, Runfiles runfiles) {
this(runfilesDir, runfiles, /*manifest=*/ null);
}
/**
* Create an instance mapping {@code runfiles} to {@code runfilesDir}.
*
* @param runfilesDir the desired runfiles directory. Should be relative.
* @param runfiles the runfiles for runilesDir.
* @param manifest runfiles' associated runfiles manifest artifact, if present. Important: this
* parameter will be used to filter the resulting spawn's inputs to not poison downstream
* caches.
*/
@AutoCodec.Instantiator
public RunfilesSupplierImpl(
PathFragment runfilesDir, Runfiles runfiles, @Nullable Artifact manifest) {
Preconditions.checkArgument(!runfilesDir.isAbsolute());
this.runfilesDir = Preconditions.checkNotNull(runfilesDir);
this.runfiles = Preconditions.checkNotNull(runfiles);
this.manifest = manifest;
}
@Override
public Iterable<Artifact> getArtifacts() {
return runfiles.getAllArtifacts();
}
@Override
public ImmutableSet<PathFragment> getRunfilesDirs() {
return ImmutableSet.of(runfilesDir);
}
@Override
public ImmutableMap<PathFragment, Map<PathFragment, Artifact>> getMappings(
ArtifactPathResolver resolver) throws IOException {
return ImmutableMap.of(
runfilesDir,
runfiles.getRunfilesInputs(/*eventHandler=*/ null, /*location=*/ null, resolver));
}
@Override
public ImmutableList<Artifact> getManifests() {
return manifest != null ? ImmutableList.of(manifest) : ImmutableList.<Artifact>of();
}
}