/**
* 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.avro.tool;
import java.util.Arrays;
import java.util.Map;
import java.util.TreeMap;
import java.io.InputStream;
import org.apache.avro.mapred.tether.TetherJob;
import org.apache.avro.reflect.InduceSchemaTool;
import org.apache.avro.specific.SpecificCompiler.SpecificCompilerTool;
/** Command-line driver.*/
public class Main {
/**
* Available tools, initialized in constructor.
*/
final Map<String, Tool> tools;
int maxLen = 0;
Main() {
tools = new TreeMap<String, Tool>();
for (Tool tool : new Tool[] {
new SpecificCompilerTool(),
new InduceSchemaTool(),
new JsonToBinaryFragmentTool(),
new BinaryFragmentToJsonTool(),
new DataFileReadTool(),
new DataFileWriteTool(),
new DataFileGetSchemaTool(),
new IdlTool(),
new RpcReceiveTool(),
new RpcSendTool(),
new FromTextTool(),
new ToTextTool(),
new TetherJob()
}) {
Tool prev = tools.put(tool.getName(), tool);
if (prev != null) {
throw new AssertionError(
"Two tools with identical names: " + tool + ", " + prev);
}
maxLen = Math.max(tool.getName().length(), maxLen);
}
}
public static void main(String[] args) throws Exception {
int rc = new Main().run(args);
System.exit(rc);
}
/**
* Delegates to tool specified on the command-line.
*/
private int run(String[] args) throws Exception {
if (args.length != 0) {
Tool tool = tools.get(args[0]);
if (tool != null) {
return tool.run(
System.in, System.out, System.err, Arrays.asList(args).subList(1, args.length));
}
}
System.err.print("Version ");
printStream(Main.class.getClassLoader().getResourceAsStream("VERSION.txt"));
System.err.print(" of ");
printStream(Main.class.getClassLoader().getResourceAsStream("NOTICE.txt"));
System.err.println("----------------");
System.err.println("Available tools:");
for (Tool k : tools.values()) {
System.err.printf("%" + maxLen + "s %s\n", k.getName(), k.getShortDescription());
}
return 1;
}
private static void printStream(InputStream in) throws Exception {
byte[] buffer = new byte[1024];
for (int i = in.read(buffer); i != -1; i = in.read(buffer))
System.err.write(buffer, 0, i);
}
}