1 files changed, 44 insertions, 0 deletions
diff --git a/java/com/google/gerrit/sshd/CommandMetaData.java b/java/com/google/gerrit/sshd/CommandMetaData.java
new file mode 100644
index 0000000000..12d0890b1e
--- /dev/null
+++ b/java/com/google/gerrit/sshd/CommandMetaData.java
@@ -0,0 +1,44 @@
+// Copyright (C) 2013 The Android Open Source Project
+//
+// 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.gerrit.sshd;
+
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+/**
+ * Annotation tagged on a concrete Command to describe what it is doing and whether it can be run on
+ * slaves.
+ */
+@Target({ElementType.TYPE})
+@Retention(RUNTIME)
+public @interface CommandMetaData {
+  enum Mode {
+    MASTER,
+    MASTER_OR_SLAVE;
+
+    public boolean isSupported(boolean slaveMode) {
+      return this == MASTER_OR_SLAVE || !slaveMode;
+    }
+  }
+
+  String name();
+
+  String description() default "";
+
+  Mode runsAt() default Mode.MASTER;
+}