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// 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.PruneBundles.PruneBundlesRequest;
import com.google.codereview.internal.PruneBundles.PruneBundlesResponse;
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 invalid bundles from the data store. */
public class BundlePruner implements Runnable {
private static final Log LOG = LogFactory.getLog(BundlePruner.class);
private static final PruneBundlesRequest NEXT_REQ =
PruneBundlesRequest.getDefaultInstance();
private final Backend server;
public BundlePruner(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.getBundleStoreService().pruneBundles(ctrl, NEXT_REQ,
new RpcCallback<PruneBundlesResponse>() {
public void run(final PruneBundlesResponse rsp) {
tryAnother.value = prune(rsp);
}
});
if (ctrl.failed()) {
LOG.warn("pruneBundles failed: " + ctrl.errorText());
tryAnother.value = false;
}
return tryAnother.value;
}
private boolean prune(final PruneBundlesResponse rsp) {
final PruneBundlesResponse.CodeType sc = rsp.getStatusCode();
if (sc == PruneBundlesResponse.CodeType.QUEUE_EMPTY) {
return false;
}
if (sc == PruneBundlesResponse.CodeType.BUNDLES_PRUNED) {
return true;
}
throw new StopProcessingException("unknown status " + sc.name());
}
}
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