org.apache.hadoop.hbase.rest.NamespacesResource Maven / Gradle / Ivy
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*
* 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.hadoop.hbase.rest;
import java.io.IOException;
import javax.servlet.ServletContext;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.rest.model.NamespacesModel;
/**
* Implements REST GET list of all namespaces.
*
* /namespaces
*
*/
@InterfaceAudience.Private
public class NamespacesResource extends ResourceBase {
private static final Log LOG = LogFactory.getLog(NamespacesResource.class);
/**
* Constructor
* @throws IOException
*/
public NamespacesResource() throws IOException {
super();
}
/**
* Build a response for a list of all namespaces request.
* @param context servlet context
* @param uriInfo (JAX-RS context variable) request URL
* @return a response for a version request
*/
@GET
@Produces({MIMETYPE_TEXT, MIMETYPE_XML, MIMETYPE_JSON, MIMETYPE_PROTOBUF,
MIMETYPE_PROTOBUF_IETF})
public Response get(final @Context ServletContext context, final @Context UriInfo uriInfo) {
if (LOG.isDebugEnabled()) {
LOG.debug("GET " + uriInfo.getAbsolutePath());
}
servlet.getMetrics().incrementRequests(1);
try {
NamespacesModel rowModel = null;
rowModel = new NamespacesModel(servlet.getAdmin());
servlet.getMetrics().incrementSucessfulGetRequests(1);
return Response.ok(rowModel).build();
} catch (IOException e) {
servlet.getMetrics().incrementFailedGetRequests(1);
throw new RuntimeException("Cannot retrieve list of namespaces.");
}
}
/**
* Dispatch to NamespaceInstanceResource
*/
@Path("{namespace}")
public NamespacesInstanceResource getNamespaceInstanceResource(
final @PathParam("namespace") String namespace) throws IOException {
return new NamespacesInstanceResource(namespace);
}
}