/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.ambari.server.actionmanager;
import com.google.inject.Inject;
import com.google.inject.Injector;
import org.apache.ambari.server.AmbariException;
import org.apache.ambari.server.agent.ExecutionCommand;
import org.apache.ambari.server.orm.dao.HostRoleCommandDAO;
import org.apache.ambari.server.state.Cluster;
import org.apache.ambari.server.state.Clusters;
import org.apache.ambari.server.state.Config;
import org.apache.ambari.server.state.ConfigHelper;
import org.apache.ambari.server.utils.StageUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.util.HashMap;
import java.util.Map;
public class ExecutionCommandWrapper {
@Inject
static Injector injector;
private static Log LOG = LogFactory.getLog(ExecutionCommandWrapper.class);
private static String DELETED = "DELETED_";
String jsonExecutionCommand = null;
ExecutionCommand executionCommand = null;
public ExecutionCommandWrapper(String jsonExecutionCommand) {
this.jsonExecutionCommand = jsonExecutionCommand;
}
public ExecutionCommandWrapper(ExecutionCommand executionCommand) {
this.executionCommand = executionCommand;
}
public ExecutionCommand getExecutionCommand() {
if (executionCommand != null) {
return executionCommand;
} else if (jsonExecutionCommand != null) {
executionCommand = StageUtils.getGson().fromJson(jsonExecutionCommand, ExecutionCommand.class);
if (injector == null) {
throw new RuntimeException("Injector not found, configuration cannot be restored");
} else if (executionCommand.getConfigurationTags() != null &&
!executionCommand.getConfigurationTags().isEmpty()) {
// For a configuration type, both tag and an actual configuration can be stored
// Configurations from the tag is always expanded and then over-written by the actual
// global:version1:{a1:A1,b1:B1,d1:D1} + global:{a1:A2,c1:C1,DELETED_d1:x} ==>
// global:{a1:A2,b1:B1,c1:C1}
Clusters clusters = injector.getInstance(Clusters.class);
HostRoleCommandDAO hostRoleCommandDAO = injector.getInstance(HostRoleCommandDAO.class);
Long clusterId = hostRoleCommandDAO.findByPK(
executionCommand.getTaskId()).getStage().getClusterId();
try {
Cluster cluster = clusters.getClusterById(clusterId);
ConfigHelper configHelper = injector.getInstance(ConfigHelper.class);
Map<String, Map<String, String>> configProperties = configHelper
.getEffectiveConfigProperties(cluster,
executionCommand.getConfigurationTags());
// Apply the configurations saved with the Execution Cmd on top of
// derived configs - This will take care of all the hacks
for (Map.Entry<String, Map<String, String>> entry : configProperties.entrySet()) {
String type = entry.getKey();
Map<String, String> allLevelMergedConfig = entry.getValue();
if (executionCommand.getConfigurations().containsKey(type)) {
Map<String, String> mergedConfig =
configHelper.getMergedConfig(allLevelMergedConfig,
executionCommand.getConfigurations().get(type));
executionCommand.getConfigurations().get(type).clear();
executionCommand.getConfigurations().get(type).putAll(mergedConfig);
} else {
executionCommand.getConfigurations().put(type, new HashMap<String, String>());
executionCommand.getConfigurations().get(type).putAll(allLevelMergedConfig);
}
}
} catch (AmbariException e) {
throw new RuntimeException(e);
}
}
return executionCommand;
} else {
throw new RuntimeException(
"Invalid ExecutionCommandWrapper, both object and string"
+ " representations are null");
}
}
public String getJson() {
if (jsonExecutionCommand != null) {
return jsonExecutionCommand;
} else if (executionCommand != null) {
jsonExecutionCommand = StageUtils.getGson().toJson(executionCommand);
return jsonExecutionCommand;
} else {
throw new RuntimeException(
"Invalid ExecutionCommandWrapper, both object and string"
+ " representations are null");
}
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
ExecutionCommandWrapper wrapper = (ExecutionCommandWrapper) o;
if (executionCommand != null && wrapper.executionCommand != null) {
return executionCommand.equals(wrapper.executionCommand);
} else {
return getJson().equals(wrapper.getJson());
}
}
@Override
public int hashCode() {
if (executionCommand != null) {
return executionCommand.hashCode();
} else if (jsonExecutionCommand != null) {
return jsonExecutionCommand.hashCode();
}
throw new RuntimeException("Invalid Wrapper object");
}
void invalidateJson() {
if (executionCommand == null) {
throw new RuntimeException("Invalid Wrapper object");
}
jsonExecutionCommand = null;
}
}