1 files changed, 92 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/config/BuildConfigurationKey.java b/src/main/java/com/google/devtools/build/lib/analysis/config/BuildConfigurationKey.java
new file mode 100644
index 0000000000..e8fcf344c7
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/analysis/config/BuildConfigurationKey.java
@@ -0,0 +1,92 @@
+// 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.analysis.config;
+
+import com.google.common.base.Preconditions;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.ImmutableSortedSet;
+import com.google.common.collect.ListMultimap;
+import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.syntax.Label;
+
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+
+/**
+ * A key for the creation of {@link BuildConfigurationCollection} instances.
+ */
+public final class BuildConfigurationKey {
+
+  private final BuildOptions buildOptions;
+  private final BlazeDirectories directories;
+  private final Map<String, String> clientEnv;
+  private final ImmutableSortedSet<String> multiCpu;
+
+  /**
+   * Creates a key for the creation of {@link BuildConfigurationCollection} instances.
+   *
+   * Note that the BuildConfiguration.Options instance must not contain unresolved relative paths.
+   */
+  public BuildConfigurationKey(BuildOptions buildOptions, BlazeDirectories directories,
+      Map<String, String> clientEnv, Set<String> multiCpu) {
+    this.buildOptions = Preconditions.checkNotNull(buildOptions);
+    this.directories = Preconditions.checkNotNull(directories);
+    this.clientEnv = ImmutableMap.copyOf(clientEnv);
+    this.multiCpu = ImmutableSortedSet.copyOf(multiCpu);
+  }
+
+  public BuildConfigurationKey(BuildOptions buildOptions, BlazeDirectories directories,
+      Map<String, String> clientEnv) {
+    this(buildOptions, directories, clientEnv, ImmutableSet.<String>of());
+  }
+
+  public BuildOptions getBuildOptions() {
+    return buildOptions;
+  }
+
+  public BlazeDirectories getDirectories() {
+    return directories;
+  }
+
+  public Map<String, String> getClientEnv() {
+    return clientEnv;
+  }
+
+  public ImmutableSortedSet<String> getMultiCpu() {
+    return multiCpu;
+  }
+
+  public ListMultimap<String, Label> getLabelsToLoadUnconditionally() {
+    return buildOptions.getAllLabels();
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (!(o instanceof BuildConfigurationKey)) {
+      return false;
+    }
+    BuildConfigurationKey k = (BuildConfigurationKey) o;
+    return buildOptions.equals(k.buildOptions)
+        && directories.equals(k.directories)
+        && clientEnv.equals(k.clientEnv)
+        && multiCpu.equals(k.multiCpu);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(buildOptions, directories, clientEnv, multiCpu);
+  }
+}