1 files changed, 86 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/BuildInfoCollectionFunction.java b/src/main/java/com/google/devtools/build/lib/skyframe/BuildInfoCollectionFunction.java
new file mode 100644
index 0000000000..e717e51150
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/BuildInfoCollectionFunction.java
@@ -0,0 +1,86 @@
+// Copyright 2014 Google Inc. 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.skyframe;
+
+import com.google.common.base.Supplier;
+import com.google.devtools.build.lib.actions.Artifact;
+import com.google.devtools.build.lib.actions.ArtifactFactory;
+import com.google.devtools.build.lib.actions.Root;
+import com.google.devtools.build.lib.analysis.buildinfo.BuildInfoFactory;
+import com.google.devtools.build.lib.analysis.buildinfo.BuildInfoFactory.BuildInfoContext;
+import com.google.devtools.build.lib.analysis.buildinfo.BuildInfoFactory.BuildInfoKey;
+import com.google.devtools.build.lib.analysis.buildinfo.BuildInfoFactory.BuildInfoType;
+import com.google.devtools.build.lib.skyframe.BuildInfoCollectionValue.BuildInfoKeyAndConfig;
+import com.google.devtools.build.lib.vfs.PathFragment;
+import com.google.devtools.build.skyframe.SkyFunction;
+import com.google.devtools.build.skyframe.SkyKey;
+import com.google.devtools.build.skyframe.SkyValue;
+
+import java.util.Map;
+
+/**
+ * Creates a {@link BuildInfoCollectionValue}. Only depends on the unique
+ * {@link WorkspaceStatusValue} and the constant {@link PrecomputedValue#BUILD_INFO_FACTORIES}
+ * injected value.
+ */
+public class BuildInfoCollectionFunction implements SkyFunction {
+  // Supplier only because the artifact factory has not yet been created at constructor time.
+  private final Supplier<ArtifactFactory> artifactFactory;
+  private final Root buildDataDirectory;
+
+  BuildInfoCollectionFunction(Supplier<ArtifactFactory> artifactFactory,
+      Root buildDataDirectory) {
+    this.artifactFactory = artifactFactory;
+    this.buildDataDirectory = buildDataDirectory;
+  }
+
+  @Override
+  public SkyValue compute(SkyKey skyKey, Environment env) {
+    final BuildInfoKeyAndConfig keyAndConfig = (BuildInfoKeyAndConfig) skyKey.argument();
+    WorkspaceStatusValue infoArtifactValue =
+        (WorkspaceStatusValue) env.getValue(WorkspaceStatusValue.SKY_KEY);
+    if (infoArtifactValue == null) {
+      return null;
+    }
+    Map<BuildInfoKey, BuildInfoFactory> buildInfoFactories =
+        PrecomputedValue.BUILD_INFO_FACTORIES.get(env);
+    if (buildInfoFactories == null) {
+      return null;
+    }
+    final ArtifactFactory factory = artifactFactory.get();
+    BuildInfoContext context = new BuildInfoContext() {
+      @Override
+      public Artifact getBuildInfoArtifact(PathFragment rootRelativePath, Root root,
+          BuildInfoType type) {
+        return type == BuildInfoType.NO_REBUILD
+            ? factory.getConstantMetadataArtifact(rootRelativePath, root, keyAndConfig)
+            : factory.getDerivedArtifact(rootRelativePath, root, keyAndConfig);
+      }
+
+      @Override
+      public Root getBuildDataDirectory() {
+        return buildDataDirectory;
+      }
+    };
+
+    return new BuildInfoCollectionValue(buildInfoFactories.get(
+        keyAndConfig.getInfoKey()).create(context, keyAndConfig.getConfig(),
+            infoArtifactValue.getStableArtifact(), infoArtifactValue.getVolatileArtifact()));
+  }
+
+  @Override
+  public String extractTag(SkyKey skyKey) {
+    return null;
+  }
+}