/*
* 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.nifi.web.api.config;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.ExceptionMapper;
import javax.ws.rs.ext.Provider;
import org.apache.nifi.cluster.manager.exception.ConnectingNodeMutableRequestException;
import org.apache.nifi.util.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Maps connecting node mutable request exceptions into client responses.
*/
@Provider
public class ConnectingNodeMutableRequestExceptionMapper implements ExceptionMapper<ConnectingNodeMutableRequestException> {
private static final Log logger = LogFactory.getLog(ConnectingNodeMutableRequestExceptionMapper.class);
@Override
public Response toResponse(ConnectingNodeMutableRequestException ex) {
// log the error
logger.info(String.format("Unable to service mutable request because a node is connecting to the cluster: %s. Returning %s response.", ex, Response.Status.CONFLICT));
if (logger.isDebugEnabled()) {
logger.debug(StringUtils.EMPTY, ex);
}
return Response.status(Response.Status.CONFLICT).entity(
"Unable to service request because at least one node is connecting to the cluster. "
+ "When all nodes are finished connecting to the cluster, the flow may be changed.").type("text/plain").build();
}
}