/**
* 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.hadoop.hive.ql.processors;
import java.io.PrintStream;
import com.facebook.presto.hive.shaded.org.apache.commons.logging.Log;
import com.facebook.presto.hive.shaded.org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FsShell;
import org.apache.hadoop.hive.ql.parse.VariableSubstitution;
import org.apache.hadoop.hive.ql.session.SessionState;
import org.apache.hadoop.hive.ql.session.SessionState.LogHelper;
/**
* DfsProcessor.
*
*/
public class DfsProcessor implements CommandProcessor {
public static final Log LOG = LogFactory.getLog(DfsProcessor.class.getName());
public static final LogHelper console = new LogHelper(LOG);
private final FsShell dfs;
public DfsProcessor(Configuration conf) {
dfs = new FsShell(conf);
}
public void init() {
}
public CommandProcessorResponse run(String command) {
try {
SessionState ss = SessionState.get();
command = new VariableSubstitution().substitute(ss.getConf(),command);
String[] tokens = command.split("\\s+");
PrintStream oldOut = System.out;
if (ss != null && ss.out != null) {
System.setOut(ss.out);
}
int ret = dfs.run(tokens);
if (ret != 0) {
console.printError("Command failed with exit code = " + ret);
}
System.setOut(oldOut);
return new CommandProcessorResponse(ret);
} catch (Exception e) {
console.printError("Exception raised from DFSShell.run "
+ e.getLocalizedMessage(), org.apache.hadoop.util.StringUtils
.stringifyException(e));
return new CommandProcessorResponse(1);
}
}
}