1 files changed, 89 insertions, 0 deletions
diff --git a/mgrapp/src/com/google/codereview/manager/prune/BuildPruner.java b/mgrapp/src/com/google/codereview/manager/prune/BuildPruner.java
new file mode 100644
index 0000000000..cf933257d3
--- /dev/null
+++ b/mgrapp/src/com/google/codereview/manager/prune/BuildPruner.java
@@ -0,0 +1,89 @@
+// Copyright 2008 Google Inc.
+//
+// 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.codereview.manager.prune;
+
+import com.google.codereview.internal.PruneBuilds.PruneBuildsRequest;
+import com.google.codereview.internal.PruneBuilds.PruneBuildsResponse;
+import com.google.codereview.manager.Backend;
+import com.google.codereview.manager.StopProcessingException;
+import com.google.codereview.rpc.SimpleController;
+import com.google.codereview.util.MutableBoolean;
+import com.google.protobuf.RpcCallback;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/** Deletes unnecessary builds from the data store. */
+public class BuildPruner implements Runnable {
+  private static final Log LOG = LogFactory.getLog(BuildPruner.class);
+
+  private static final PruneBuildsRequest NEXT_REQ =
+      PruneBuildsRequest.getDefaultInstance();
+
+  private final Backend server;
+
+  public BuildPruner(final Backend be) {
+    server = be;
+  }
+
+  public void run() {
+    try {
+      runImpl();
+    } catch (RuntimeException err) {
+      LOG.fatal("Unexpected runtime failure", err);
+      throw err;
+    } catch (Error err) {
+      LOG.fatal("Unexpected runtime failure", err);
+      throw err;
+    }
+  }
+
+  private void runImpl() {
+    boolean tryAnother;
+    do {
+      tryAnother = next();
+    } while (tryAnother);
+  }
+
+  private boolean next() {
+    final MutableBoolean tryAnother = new MutableBoolean();
+    final SimpleController ctrl = new SimpleController();
+    server.getBuildService().pruneBuilds(ctrl, NEXT_REQ,
+        new RpcCallback<PruneBuildsResponse>() {
+          public void run(final PruneBuildsResponse rsp) {
+            tryAnother.value = prune(rsp);
+          }
+        });
+    if (ctrl.failed()) {
+      LOG.warn("pruneBuilds failed: " + ctrl.errorText());
+      tryAnother.value = false;
+    }
+    return tryAnother.value;
+  }
+
+  private boolean prune(final PruneBuildsResponse rsp) {
+    final PruneBuildsResponse.CodeType sc = rsp.getStatusCode();
+
+    if (sc == PruneBuildsResponse.CodeType.QUEUE_EMPTY) {
+      return false;
+    }
+
+    if (sc == PruneBuildsResponse.CodeType.BUILDS_PRUNED) {
+      return true;
+    }
+
+    throw new StopProcessingException("unknown status " + sc.name());
+  }
+}