1 files changed, 68 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/runtime/CommandExecutor.java b/src/main/java/com/google/devtools/build/lib/runtime/CommandExecutor.java
new file mode 100644
index 0000000000..659f4b7136
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/runtime/CommandExecutor.java
@@ -0,0 +1,68 @@
+// 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.runtime;
+
+import com.google.devtools.build.lib.server.ServerCommand;
+import com.google.devtools.build.lib.util.io.OutErr;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.util.List;
+import java.util.logging.Logger;
+
+/**
+ * Executes a Blaze command.
+ *
+ * <p>This is the common execution path between the gRPC server and the legacy AF_UNIX server.
+ */
+public class CommandExecutor implements ServerCommand {
+  private static final Logger LOG = Logger.getLogger(CommandExecutor.class.getName());
+
+  private boolean shutdown;
+  private final BlazeRuntime runtime;
+  private final BlazeCommandDispatcher dispatcher;
+
+  CommandExecutor(BlazeRuntime runtime, BlazeCommandDispatcher dispatcher) {
+    this.shutdown = false;
+    this.runtime = runtime;
+    this.dispatcher = dispatcher;
+  }
+
+  @Override
+  public int exec(List<String> args, OutErr outErr, long firstContactTime) {
+    LOG.info(BlazeRuntime.getRequestLogString(args));
+
+    try {
+      return dispatcher.exec(args, outErr, firstContactTime);
+    } catch (BlazeCommandDispatcher.ShutdownBlazeServerException e) {
+      if (e.getCause() != null) {
+        StringWriter message = new StringWriter();
+        message.write("Shutting down due to exception:\n");
+        PrintWriter writer = new PrintWriter(message, true);
+        e.printStackTrace(writer);
+        writer.flush();
+        LOG.severe(message.toString());
+      }
+      shutdown = true;
+      runtime.shutdown();
+      dispatcher.shutdown();
+      return e.getExitStatus();
+    }
+  }
+
+  @Override
+  public boolean shutdown() {
+    return shutdown;
+  }
+}