1 files changed, 71 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/remote/RemoteActionCache.java b/src/main/java/com/google/devtools/build/lib/remote/RemoteActionCache.java
new file mode 100644
index 0000000000..538a4c987e
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+++ b/src/main/java/com/google/devtools/build/lib/remote/RemoteActionCache.java
@@ -0,0 +1,71 @@
+// Copyright 2016 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.remote;
+
+import com.google.devtools.build.lib.actions.ActionInput;
+import com.google.devtools.build.lib.actions.ActionInputFileCache;
+import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadCompatible;
+import com.google.devtools.build.lib.vfs.Path;
+
+import java.io.IOException;
+import java.util.Collection;
+
+/**
+ * A cache for storing artifacts (input and output) as well as the output of running an action.
+ */
+@ThreadCompatible
+interface RemoteActionCache {
+  /**
+   * Put the file in cache if it is not already in it. No-op if the file is already stored in
+   * cache.
+   *
+   * @return The key for fetching the file from cache.
+   */
+  String putFileIfNotExist(Path file) throws IOException;
+
+  /**
+   * Same as {@link putFileIfNotExist(Path)} but this methods takes an ActionInput.
+   *
+   * @return The key for fetching the file from cache.
+   */
+  String putFileIfNotExist(ActionInputFileCache cache, ActionInput file) throws IOException;
+
+  /**
+   * Write the file in cache identified by key to the file system. The key must uniquely identify
+   * the content of the file. Throws CacheNotFoundException if the file is not found in cache.
+   */
+  void writeFile(String key, Path dest, boolean executable)
+      throws IOException, CacheNotFoundException;
+
+  /**
+   * Write the action output files identified by the key to the file system. The key must uniquely
+   * identify the action and the content of action inputs.
+   *
+   * @throws CacheNotFoundException if action output is not found in cache.
+   */
+  void writeActionOutput(String key, Path execRoot)
+      throws IOException, CacheNotFoundException;
+
+  /**
+   * Update the cache with the action outputs for the specified key.
+   */
+  void putActionOutput(String key, Collection<? extends ActionInput> outputs)
+      throws IOException;
+
+  /**
+   * Update the cache with the files for the specified key.
+   */
+  void putActionOutput(String key, Path execRoot, Collection<Path> files) throws IOException;
+}