/*
* 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.jclouds.karaf.commands.blobstore;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import org.apache.felix.gogo.commands.Argument;
import org.apache.felix.gogo.commands.Command;
import org.apache.felix.gogo.commands.CommandException;
import org.apache.felix.gogo.commands.Option;
import org.jclouds.blobstore.BlobStore;
import org.jclouds.blobstore.KeyNotFoundException;
import com.google.common.base.Charsets;
import com.google.common.base.Strings;
import com.google.common.io.CharStreams;
import com.google.common.io.Files;
import com.google.common.io.InputSupplier;
/**
* @author: iocanel
*/
@Command(scope = "jclouds", name = "blobstore-read", description = "Reads data from the blobstore")
public class BlobReadCommand extends BlobStoreCommandWithOptions {
@Argument(index = 0, name = "containerName", description = "The name of the container", required = true, multiValued = false)
String containerName;
@Argument(index = 1, name = "blobName", description = "The name of the blob", required = true, multiValued = false)
String blobName;
@Argument(index = 2, name = "toFile", description = "The file to store the blob", required = false, multiValued = false)
String fileName;
@Option(name = "-d", aliases = "--display", description = "Display the content to the console", required = false, multiValued = false)
boolean display;
@Override
protected Object doExecute() throws Exception {
BlobStore blobStore = getBlobStore();
InputSupplier<InputStream> supplier = getBlobInputStream(blobStore, containerName, blobName);
if (display) {
CharStreams.copy(CharStreams.newReaderSupplier(supplier, Charsets.UTF_8), System.out);
System.out.flush();
} else {
if (fileName == null) {
throw new CommandException("Must specify --display or file name");
}
File file = new File(fileName);
if (!file.exists() && !file.createNewFile()) {
throw new IOException("Could not create: " + file);
}
Files.copy(supplier, file);
}
return null;
}
}