/**
* Licensed to Cloudera, Inc. under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Cloudera, Inc. 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 com.cloudera.flume.master;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.cloudera.flume.agent.LogicalNode;
import com.cloudera.flume.conf.Context;
import com.cloudera.flume.conf.FlumeBuilder;
import com.cloudera.flume.conf.FlumeConfiguration;
import com.cloudera.flume.conf.FlumeSpecException;
import com.cloudera.flume.conf.FlumeSpecGen;
import com.cloudera.flume.conf.FlumeConfigData;
import com.cloudera.flume.conf.LogicalNodeContext;
import com.google.common.base.Preconditions;
/**
* This is for setting multiple configurations at one time, from a text field.
* It has the java bean interface for the jsp, and toCommand mechanism for the
* command manager.
*
* TODO (jon) rename to MultiConfigForm
*/
public class MultiConfigCommand {
static final Logger LOG = LoggerFactory.getLogger(MultiConfigCommand.class);
String specification;
public String getSpecification() {
return specification;
}
public void setSpecification(String specification) {
this.specification = specification;
}
/**
* Build a command for the command manager.
*/
public Command toCommand() {
return new Command("multiconfig", specification);
}
/**
* Actual Command execution.
*/
public static Execable buildExecable() {
return new Execable() {
@Override
public void exec(String[] argv) throws IOException {
Preconditions.checkArgument(argv.length == 1);
FlumeMaster master = FlumeMaster.getInstance();
boolean needsRefresh = false;
try {
List<FlumeNodeSpec> cfgs = FlumeSpecGen.generate(argv[0]);
// check all cfgs to make sure they are valid
for (FlumeNodeSpec spec : cfgs) {
// TODO: first arg should be physical node
Context ctx = new LogicalNodeContext(spec.node, spec.node);
FlumeBuilder.buildSource(ctx, spec.src);
FlumeBuilder.buildSink(ctx, spec.sink);
}
// set all cfgs to make sure they are valid.
ConfigurationManager specman = master.getSpecMan();
Map<String, FlumeConfigData> configs = new HashMap<String, FlumeConfigData>();
for (FlumeNodeSpec spec : cfgs) {
configs.put(spec.node, new FlumeConfigData(0, spec.src, spec.sink,
LogicalNode.VERSION_INFIMUM, LogicalNode.VERSION_INFIMUM,
FlumeConfiguration.get().getDefaultFlowName()));
if (spec.src.contains("collectorSource")) {
needsRefresh = true;
}
}
specman.setBulkConfig(configs);
if (needsRefresh) {
specman.refreshAll();
}
} catch (FlumeSpecException e) {
LOG.error("Invalid Flume specification", e);
throw new IOException(e);
}
}
};
}
}