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/*
* Copyright 2014-2015 Open Networking Laboratory
*
* Licensed 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.onosproject.vtnweb.resources;
import static javax.ws.rs.core.Response.Status.NOT_FOUND;
import static javax.ws.rs.core.Response.Status.OK;
import static org.onlab.util.Tools.nullIsNotFound;
import java.io.IOException;
import java.io.InputStream;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
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.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import org.onosproject.rest.AbstractWebResource;
import org.onosproject.vtnrsc.PortChain;
import org.onosproject.vtnrsc.PortChainId;
import org.onosproject.vtnrsc.portchain.PortChainService;
import org.onosproject.vtnweb.web.PortChainCodec;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
/**
* Query and program port chain.
*/
@Path("port_chains")
public class PortChainWebResource extends AbstractWebResource {
private final Logger log = LoggerFactory.getLogger(PortChainWebResource.class);
private final PortChainService service = get(PortChainService.class);
public static final String PORT_CHAIN_NOT_FOUND = "Port chain not found";
public static final String PORT_CHAIN_ID_EXIST = "Port chain exists";
public static final String PORT_CHAIN_ID_NOT_EXIST = "Port chain does not exist with identifier";
/**
* Get details of all port chains created.
*
* @return 200 OK
*/
@GET
@Produces(MediaType.APPLICATION_JSON)
public Response getPortChains() {
Iterable<PortChain> portChains = service.getPortChains();
ObjectNode result = new ObjectMapper().createObjectNode();
result.set("port_chains", new PortChainCodec().encode(portChains, this));
return ok(result).build();
}
/**
* Get details of a specified port chain id.
*
* @param id port chain id
* @return 200 OK, 404 if given identifier does not exist
*/
@GET
@Path("{chain_id}")
@Produces(MediaType.APPLICATION_JSON)
public Response getPortPain(@PathParam("chain_id") String id) {
if (!service.exists(PortChainId.of(id))) {
return Response.status(NOT_FOUND).entity(PORT_CHAIN_NOT_FOUND).build();
}
PortChain portChain = nullIsNotFound(service.getPortChain(PortChainId.of(id)),
PORT_CHAIN_NOT_FOUND);
ObjectNode result = new ObjectMapper().createObjectNode();
result.set("port_chain", new PortChainCodec().encode(portChain, this));
return ok(result).build();
}
/**
* Creates a new port chain.
*
* @param stream port chain from JSON
* @return status of the request - CREATED if the JSON is correct,
* BAD_REQUEST if the JSON is invalid
*/
@POST
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public Response createPortChain(InputStream stream) {
try {
ObjectNode jsonTree = (ObjectNode) mapper().readTree(stream);
PortChain portChain = codec(PortChain.class).decode(jsonTree, this);
Boolean issuccess = nullIsNotFound(service.createPortChain(portChain), PORT_CHAIN_NOT_FOUND);
return Response.status(OK).entity(issuccess.toString()).build();
} catch (IOException e) {
log.error("Exception while creating port chain {}.", e.toString());
throw new IllegalArgumentException(e);
}
}
/**
* Update details of a specified port chain id.
*
* @param id port chain id
* @param stream port chain json
* @return 200 OK, 404 if given identifier does not exist
*/
@PUT
@Path("{chain_id}")
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
public Response updatePortPain(@PathParam("chain_id") String id,
final InputStream stream) {
try {
ObjectNode jsonTree = (ObjectNode) mapper().readTree(stream);
PortChain portChain = codec(PortChain.class).decode(jsonTree, this);
Boolean result = nullIsNotFound(service.updatePortChain(portChain), PORT_CHAIN_NOT_FOUND);
return Response.status(OK).entity(result.toString()).build();
} catch (IOException e) {
log.error("Update port chain failed because of exception {}.", e.toString());
throw new IllegalArgumentException(e);
}
}
/**
* Delete details of a specified port chain id.
*
* @param id port chain id
*/
@Path("{chain_id}")
@DELETE
public void deletePortPain(@PathParam("chain_id") String id) {
log.debug("Deletes port chain by identifier {}.", id);
PortChainId portChainId = PortChainId.of(id);
Boolean issuccess = nullIsNotFound(service.removePortChain(portChainId), PORT_CHAIN_NOT_FOUND);
if (!issuccess) {
log.debug("Port Chain identifier {} does not exist", id);
}
}
}
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