/**
* Copyright 2013-2014 Recruit Technologies Co., Ltd. and contributors
* (see CONTRIBUTORS.md)
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. A copy of the
* License is distributed with this work in the LICENSE.md file. You may
* also obtain a copy of the License from
*
* 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 org.gennai.gungnir.ql.task;
import static org.gennai.gungnir.GungnirConfig.*;
import static org.gennai.gungnir.GungnirConst.*;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import org.gennai.gungnir.GungnirManager;
import org.gennai.gungnir.GungnirTopology;
import org.gennai.gungnir.GungnirTopology.TopologyStatus;
import org.gennai.gungnir.cluster.ClusterManagerException;
import org.gennai.gungnir.cluster.storm.CapacityWorkerException;
import org.gennai.gungnir.cluster.storm.StormClusterManager;
import org.gennai.gungnir.cluster.storm.StormClusterManagerException;
import org.gennai.gungnir.cluster.storm.TopologyStatusChangedListener;
import org.gennai.gungnir.metastore.AlreadyStoredException;
import org.gennai.gungnir.metastore.MetaStore;
import org.gennai.gungnir.metastore.MetaStoreException;
import org.gennai.gungnir.metastore.NotStoredException;
import org.gennai.gungnir.ql.FileStat;
import org.gennai.gungnir.ql.FunctionEntity;
import org.gennai.gungnir.ql.analysis.FileRegistry;
import org.gennai.gungnir.tuple.schema.Schema;
import org.gennai.gungnir.utils.GungnirUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import backtype.storm.generated.NotAliveException;
public class SubmitTopologyTask implements Task {
private static final Logger LOG = LoggerFactory.getLogger(SubmitTopologyTask.class);
private GungnirTopology topology;
private FileRegistry fileRegistry;
private GungnirManager manager;
private MetaStore metaStore;
private List<Schema> schemas;
private List<FunctionEntity> functions;
private List<FileStat> files;
private int schemaCnt = 0;
private int funcCnt = 0;
private int fileCnt = 0;
private boolean started;
public SubmitTopologyTask(GungnirTopology topology, FileRegistry fileRegistry) {
this.topology = topology;
this.fileRegistry = fileRegistry;
}
private void rollback() throws MetaStoreException {
if (started) {
try {
if (!StormClusterManager.getManager().stopTopologySync(topology)) {
LOG.error("Failed to stop topology '{}'", topology.getId());
}
} catch (NotAliveException e) {
LOG.info("Topology isn't alive '" + topology.getId() + "'", e);
} catch (StormClusterManagerException e) {
LOG.error("Failed to stop topology '{}'", topology.getId(), e);
} catch (InterruptedException e) {
LOG.error("Failed to stop topology '{}'", topology.getId(), e);
}
}
for (int i = 0; i < fileCnt; i++) {
metaStore.changeFileToFree(files.get(i), topology.getId());
}
for (int i = 0; i < funcCnt; i++) {
metaStore.changeFunctionToFree(functions.get(i), topology.getId());
}
for (int i = 0; i < schemaCnt; i++) {
metaStore.changeSchemaToFree(schemas.get(i), topology.getId());
}
try {
metaStore.deleteTopology(topology);
} catch (NotStoredException e) {
LOG.warn("Failed to delete topology", e);
}
LOG.error("Topology rollback '{}'", topology.getId());
}
private class TopologyStartedListener implements TopologyStatusChangedListener {
@Override
public void process() {
try {
topology.setStatus(TopologyStatus.RUNNING);
if (metaStore.changeTopologyStatus(topology)) {
manager.getClusterManager().sync(topology);
} else {
TopologyStatus status = metaStore.getTopologyStatus(topology.getId());
LOG.error("Can't change topology status '{}' ({}->{})", topology.getId(), status,
TopologyStatus.RUNNING);
rollback();
}
} catch (MetaStoreException e) {
LOG.error("Failed to change topology status", e);
} catch (NotStoredException e) {
LOG.error("Failed to change topology status", e);
} catch (ClusterManagerException e) {
LOG.error("Failed to synchronize the cluster", e);
}
}
@Override
public void rollback() {
try {
SubmitTopologyTask.this.rollback();
} catch (MetaStoreException e) {
LOG.error("Failed to rollback status", e);
}
}
}
@Override
public String execute() throws TaskExecuteException {
if (topology.getStatus() != TopologyStatus.STOPPED) {
LOG.info("Topology status is '{}'", topology.getStatus());
throw new TaskExecuteException("Topology status is '" + topology.getStatus() + "'");
}
manager = GungnirManager.getManager();
try {
metaStore = manager.getMetaStore();
topology.setStatus(TopologyStatus.STARTING);
metaStore.insertTopology(topology);
schemas = topology.getUsedSchemas();
for (; schemaCnt < schemas.size(); schemaCnt++) {
Schema schema = schemas.get(schemaCnt);
schema.setOwner(topology.getOwner());
if (!metaStore.changeSchemaToBusy(schema, topology.getId())) {
rollback();
throw new TaskExecuteException(schema.getSchemaName() + " can't change to busy");
}
}
functions = topology.getUsedFunctions();
for (; funcCnt < functions.size(); funcCnt++) {
FunctionEntity function = functions.get(funcCnt);
function.setOwner(topology.getOwner());
if (!metaStore.changeFunctionToBusy(function, topology.getId())) {
rollback();
throw new TaskExecuteException(function.getName() + " can't change to busy");
}
}
files = fileRegistry.getFiles();
if (files != null) {
for (; fileCnt < files.size(); fileCnt++) {
FileStat fileStat = files.get(fileCnt);
if (!metaStore.changeFileToBusy(fileStat, topology.getId())) {
rollback();
throw new TaskExecuteException("'" + fileStat.getName() + "' can't change to busy");
}
}
}
Path classPath = Paths.get(topology.getConfig().getString(LOCAL_DIR), TOPOLOGY_CACHE_DIR,
topology.getId());
try {
GungnirUtils.createLinkDirectory(classPath, Paths.get(fileRegistry.getCacheDir()));
} catch (IOException e) {
rollback();
throw new TaskExecuteException("Failed to link classpath");
}
StormClusterManager.getManager().startTopology(topology, new TopologyStartedListener());
started = true;
} catch (MetaStoreException e) {
topology.setStatus(TopologyStatus.STOPPED);
throw new TaskExecuteException(e);
} catch (AlreadyStoredException e) {
topology.setStatus(TopologyStatus.STOPPED);
throw new TaskExecuteException(e);
} catch (StormClusterManagerException e) {
try {
rollback();
} catch (MetaStoreException e2) {
throw new TaskExecuteException(e2);
}
throw new TaskExecuteException(e);
} catch (CapacityWorkerException e) {
try {
rollback();
} catch (MetaStoreException e2) {
throw new TaskExecuteException(e2);
}
throw new TaskExecuteException(e);
}
return "OK";
}
}