/*
* Copyright 2010 The Apache Software Foundation
*
* 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.stargate;
import java.io.IOException;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.CacheControl;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import javax.ws.rs.core.Response.ResponseBuilder;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.stargate.User;
import org.apache.hadoop.hbase.stargate.model.TableListModel;
import org.apache.hadoop.hbase.stargate.model.TableModel;
@Path("/")
public class RootResource implements Constants {
private static final Log LOG = LogFactory.getLog(RootResource.class);
RESTServlet servlet;
CacheControl cacheControl;
public RootResource() throws IOException {
servlet = RESTServlet.getInstance();
cacheControl = new CacheControl();
cacheControl.setNoCache(true);
cacheControl.setNoTransform(false);
}
private final User auth(final String token) throws IOException {
User user = servlet.getAuthenticator().getUserForToken(token);
if (user == null || user.isDisabled()) {
throw new WebApplicationException(Response.Status.FORBIDDEN);
}
return user;
}
private final TableListModel getTableList() throws IOException {
TableListModel tableList = new TableListModel();
HBaseAdmin admin = new HBaseAdmin(servlet.getConfiguration());
HTableDescriptor[] list = admin.listTables();
for (HTableDescriptor htd: list) {
tableList.add(new TableModel(htd.getNameAsString()));
}
return tableList;
}
private final TableListModel getTableListForUser(final User user)
throws IOException {
TableListModel tableList;
if (user.isAdmin()) {
tableList = getTableList();
} else {
tableList = new TableListModel();
HBaseAdmin admin = new HBaseAdmin(servlet.getConfiguration());
HTableDescriptor[] list = admin.listTables();
String prefix = user.getName() + ".";
for (HTableDescriptor htd: list) {
String name = htd.getNameAsString();
if (!name.startsWith(prefix)) {
continue;
}
tableList.add(new TableModel(name.substring(prefix.length())));
}
}
return tableList;
}
@GET
@Produces({MIMETYPE_TEXT, MIMETYPE_XML, MIMETYPE_JSON, MIMETYPE_PROTOBUF})
public Response get(final @Context UriInfo uriInfo) throws IOException {
if (LOG.isDebugEnabled()) {
LOG.debug("GET " + uriInfo.getAbsolutePath());
}
servlet.getMetrics().incrementRequests(1);
if (servlet.isMultiUser()) {
throw new WebApplicationException(Response.Status.BAD_REQUEST);
}
try {
ResponseBuilder response = Response.ok(getTableList());
response.cacheControl(cacheControl);
return response.build();
} catch (IOException e) {
throw new WebApplicationException(e,
Response.Status.SERVICE_UNAVAILABLE);
}
}
@Path("status/cluster")
public StorageClusterStatusResource getClusterStatusResource()
throws IOException {
if (servlet.isMultiUser()) {
throw new WebApplicationException(Response.Status.BAD_REQUEST);
}
return new StorageClusterStatusResource(User.DEFAULT_USER);
}
@Path("version")
public VersionResource getVersionResource() throws IOException {
return new VersionResource();
}
@Path("{token: [0-9a-fA-F]{32} }") // 128 bit md5 sums
public Response getTableRootResource(
final @PathParam("token") String token) throws IOException {
if (servlet.isMultiUser()) {
User user = auth(token);
if (!servlet.userRequestLimit(user, 1)) {
return Response.status(509).build();
}
try {
ResponseBuilder response = Response.ok(getTableListForUser(user));
response.cacheControl(cacheControl);
return response.build();
} catch (IOException e) {
throw new WebApplicationException(e,
Response.Status.SERVICE_UNAVAILABLE);
}
}
throw new WebApplicationException(Response.Status.BAD_REQUEST);
}
@Path("{token: [0-9a-fA-F]{32} }/status/cluster") // 128 bit md5 sums
public StorageClusterStatusResource getClusterStatusResourceAuthorized(
final @PathParam("token") String token) throws IOException {
if (servlet.isMultiUser()) {
User user = auth(token);
if (user != null && user.isAdmin()) {
return new StorageClusterStatusResource(user);
}
throw new WebApplicationException(Response.Status.FORBIDDEN);
}
throw new WebApplicationException(Response.Status.BAD_REQUEST);
}
@Path("{token: [0-9a-fA-F]{32} }/{table}")
public TableResource getTableResource(
final @PathParam("token") String token,
final @PathParam("table") String table) throws IOException {
if (servlet.isMultiUser()) {
User user = auth(token);
return new TableResource(user, table);
}
throw new WebApplicationException(Response.Status.BAD_REQUEST);
}
@Path("{table}")
public TableResource getTableResource(
final @PathParam("table") String table) throws IOException {
if (servlet.isMultiUser()) {
throw new WebApplicationException(Response.Status.BAD_REQUEST);
}
return new TableResource(User.DEFAULT_USER, table);
}
}