/**
* 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.falcon.client;
import com.sun.jersey.api.client.ClientResponse;
import org.apache.falcon.resource.APIResult;
import org.apache.falcon.resource.InstancesResult;
import java.io.IOException;
import java.io.InputStream;
/**
* Exception thrown by FalconClient.
*/
public class FalconCLIException extends Exception {
private static final int MB = 1024 * 1024;
public FalconCLIException(String msg) {
super(msg);
}
public FalconCLIException(String msg, Throwable throwable) {
super(msg, throwable);
}
public static FalconCLIException fromReponse(ClientResponse clientResponse) {
return new FalconCLIException(getMessage(clientResponse));
}
private static String getMessage(ClientResponse clientResponse) {
ClientResponse.Status status = clientResponse.getClientResponseStatus();
String statusValue = status.toString();
String message = "";
if (status == ClientResponse.Status.BAD_REQUEST) {
clientResponse.bufferEntity();
InputStream in = clientResponse.getEntityInputStream();
try {
in.mark(MB);
try {
message = clientResponse.getEntity(APIResult.class).getMessage();
} catch (Throwable e) {
in.reset();
message = clientResponse.getEntity(InstancesResult.class).getMessage();
}
} catch (Throwable t) {
byte[] data = new byte[MB];
try {
in.reset();
int len = in.read(data);
message = new String(data, 0, len);
} catch (IOException e) {
message = e.getMessage();
}
}
}
return statusValue + ";" + message;
}
}