/**
* 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.trevni.tool;
import java.io.InputStream;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import org.apache.trevni.Input;
import org.apache.trevni.avro.HadoopInput;
import org.apache.trevni.InputFile;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
/** Static utility methods for tools. */
class Util {
static Input input(String filename) throws IOException {
if (filename.startsWith("hdfs://")) {
return new HadoopInput(new Path(filename), new Configuration());
} else {
return new InputFile(new File(filename));
}
}
/**
* Returns stdin if filename is "-", else opens the local or HDFS file
* and returns an InputStream for it.
* @throws IOException
*/
static InputStream input(String filename, InputStream stdin)
throws IOException {
if (filename.equals("-"))
return new BufferedInputStream(stdin);
else if (filename.startsWith("hdfs://")) {
FileSystem fs = FileSystem.get(URI.create(filename), new Configuration());
return new BufferedInputStream(fs.open(new Path(filename)));
} else {
return new BufferedInputStream(new FileInputStream(new File(filename)));
}
}
/**
* Returns stdout if filename is "-", else opens the local or HDFS file
* and returns an OutputStream for it.
* @throws IOException
*/
static OutputStream output(String filename, OutputStream stdout)
throws IOException {
if (filename.equals("-"))
return new BufferedOutputStream(stdout);
else if (filename.startsWith("hdfs://")) {
FileSystem fs = FileSystem.get(URI.create(filename), new Configuration());
return new BufferedOutputStream(fs.create(new Path(filename)));
} else {
return new BufferedOutputStream(new FileOutputStream(new File(filename)));
}
}
}