/*
* 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.chukwa.rest.resource;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.FormParam;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.QueryParam;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Response;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.chukwa.rest.bean.ReturnCodeBean;
import org.apache.hadoop.chukwa.rest.bean.ViewBean;
import org.apache.hadoop.chukwa.datastore.ViewStore;
import org.apache.hadoop.chukwa.util.ExceptionUtil;
@Path ("/view")
public class ViewResource {
protected static Log log = LogFactory.getLog(ViewResource.class);
@GET
@Path("vid/{vid}")
public ViewBean getView(@Context HttpServletRequest request, @PathParam("vid") String vid) {
ViewStore view;
ViewBean vr;
String uid = request.getRemoteUser();
try {
view = new ViewStore(uid, vid);
vr = view.get();
if(request.getRemoteUser().intern()!=vr.getOwner().intern() && vr.getPermissionType().intern()!="public".intern()) {
throw new WebApplicationException(Response.status(Response.Status.FORBIDDEN).entity("permission denied.").build());
}
} catch (IllegalAccessException e) {
throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND)
.entity("View does not exist.").build());
}
return vr;
}
@PUT
@Consumes("application/json")
public ReturnCodeBean setView(@Context HttpServletRequest request, ViewBean view) {
try {
if(request.getRemoteUser().intern()==view.getOwner().intern()) {
ViewStore vs = new ViewStore(view.getOwner(), view.getName());
vs.set(view);
} else {
throw new WebApplicationException(Response.status(Response.Status.FORBIDDEN)
.entity("Permission denied.").build());
}
} catch (IllegalAccessException e) {
log.error(ExceptionUtil.getStackTrace(e));
throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND)
.entity("View save failed.").build());
}
return new ReturnCodeBean(ReturnCodeBean.SUCCESS,"Saved");
}
@POST
@Path("permission")
public ReturnCodeBean changeViewPermission(@Context HttpServletRequest request, @FormParam("owner") String owner, @FormParam("view_vid") String vid, @FormParam("permission") String permission) {
try {
if(owner.intern()==request.getRemoteUser().intern()) {
ViewStore vs = new ViewStore(owner, vid);
ViewBean view = vs.get();
view.setPermissionType(permission);
vs.set(view);
} else {
throw new Exception("Permission denied.");
}
} catch (Exception e) {
log.error(ExceptionUtil.getStackTrace(e));
throw new WebApplicationException(Response.status(Response.Status.INTERNAL_SERVER_ERROR)
.entity("View save failed.").build());
}
return new ReturnCodeBean(ReturnCodeBean.SUCCESS,"Saved");
}
@POST
public ReturnCodeBean changeView(@Context HttpServletRequest request, @FormParam("owner") String owner, @FormParam("view_vid") String oldVid, @FormParam("view_name") String name) {
try {
ViewStore vs;
if(oldVid!=null) {
vs = new ViewStore(owner, oldVid);
} else {
vs = new ViewStore(null, "default");
}
ViewBean view = vs.get();
view.setOwner(request.getRemoteUser());
view.setName(name);
view.setDescription(name);
if(oldVid==null) {
view.setPermissionType("private");
}
vs = new ViewStore(request.getRemoteUser(), name);
vs.set(view);
} catch (Exception e) {
log.error(ExceptionUtil.getStackTrace(e));
throw new WebApplicationException(Response.status(Response.Status.INTERNAL_SERVER_ERROR)
.entity("View save failed.").build());
}
return new ReturnCodeBean(ReturnCodeBean.SUCCESS,"Saved");
}
@DELETE
@Path("delete/{owner}/vid/{vid}")
public ReturnCodeBean deleteView(@Context HttpServletRequest request, @PathParam("owner") String owner, @PathParam("vid") String vid) {
try {
if(owner.intern()==request.getRemoteUser().intern()) {
log.info("owner: "+owner+" vid: "+vid);
ViewStore vs = new ViewStore(owner, vid);
vs.delete();
} else {
throw new WebApplicationException(Response.status(Response.Status.FORBIDDEN)
.entity("View delete failed.").build());
}
} catch (Exception e) {
log.error(ExceptionUtil.getStackTrace(e));
throw new WebApplicationException(Response.status(Response.Status.INTERNAL_SERVER_ERROR)
.entity("View delete failed.").build());
}
return new ReturnCodeBean(ReturnCodeBean.SUCCESS,"Deleted");
}
@GET
@Path("list")
public String getUserViewList(@Context HttpServletRequest request) {
String result = "";
String uid = null;
try {
if(uid==null) {
uid = request.getRemoteUser();
}
result = ViewStore.list(uid).toString();
} catch (Exception e) {
throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND)
.entity("View does not exist.").build());
}
return result;
}
}