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/*
* Copyright 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.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.FlowClassifier;
import org.onosproject.vtnrsc.FlowClassifierId;
import org.onosproject.vtnrsc.flowclassifier.FlowClassifierService;
import org.onosproject.vtnweb.web.FlowClassifierCodec;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
/**
* Query and program flow classifier.
*/
@Path("flow_classifiers")
public class FlowClassifierWebResource extends AbstractWebResource {
private final Logger log = LoggerFactory.getLogger(FlowClassifierWebResource.class);
public static final String FLOW_CLASSIFIER_NOT_FOUND = "Flow classifier not found";
/**
* Get all flow classifiers created.
*
* @return 200 OK
*/
@GET
@Produces(MediaType.APPLICATION_JSON)
public Response getFlowClassifiers() {
Iterable<FlowClassifier> flowClassifiers = get(FlowClassifierService.class).getFlowClassifiers();
ObjectNode result = new ObjectMapper().createObjectNode();
ArrayNode flowClassifierEntry = result.putArray("flow_classifiers");
if (flowClassifiers != null) {
for (final FlowClassifier flowClassifier : flowClassifiers) {
flowClassifierEntry.add(new FlowClassifierCodec().encode(flowClassifier, this));
}
}
return ok(result.toString()).build();
}
/**
* Get details of a flow classifier.
*
* @param id
* flow classifier id
* @return 200 OK , 404 if given identifier does not exist
*/
@GET
@Path("{flow_id}")
@Produces(MediaType.APPLICATION_JSON)
public Response getFlowClassifier(@PathParam("flow_id") String id) {
FlowClassifier flowClassifier = nullIsNotFound(
get(FlowClassifierService.class).getFlowClassifier(FlowClassifierId.of(id)), FLOW_CLASSIFIER_NOT_FOUND);
ObjectNode result = new ObjectMapper().createObjectNode();
result.set("flow_classifier", new FlowClassifierCodec().encode(flowClassifier, this));
return ok(result.toString()).build();
}
/**
* Creates and stores a new flow classifier.
*
* @param stream
* flow classifier 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 createFlowClassifier(InputStream stream) {
try {
ObjectMapper mapper = new ObjectMapper();
ObjectNode jsonTree = (ObjectNode) mapper.readTree(stream);
JsonNode flow = jsonTree.get("flow_classifier");
FlowClassifier flowClassifier = new FlowClassifierCodec().decode((ObjectNode) flow, this);
Boolean issuccess = nullIsNotFound(get(FlowClassifierService.class).createFlowClassifier(flowClassifier),
FLOW_CLASSIFIER_NOT_FOUND);
return Response.status(OK).entity(issuccess.toString()).build();
} catch (IOException ex) {
log.error("Exception while creating flow classifier {}.", ex.toString());
throw new IllegalArgumentException(ex);
}
}
/**
* Update details of a flow classifier.
*
* @param id
* flow classifier id
* @param stream
* InputStream
* @return 200 OK, 404 if given identifier does not exist
*/
@PUT
@Path("{flow_id}")
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
public Response updateFlowClassifier(@PathParam("flow_id") String id, final InputStream stream) {
try {
JsonNode jsonTree = mapper().readTree(stream);
JsonNode flow = jsonTree.get("flow_classifier");
FlowClassifier flowClassifier = new FlowClassifierCodec().decode((ObjectNode) flow, this);
Boolean result = nullIsNotFound(get(FlowClassifierService.class).updateFlowClassifier(flowClassifier),
FLOW_CLASSIFIER_NOT_FOUND);
return Response.status(OK).entity(result.toString()).build();
} catch (IOException e) {
log.error("Update flow classifier failed because of exception {}.", e.toString());
throw new IllegalArgumentException(e);
}
}
/**
* Delete details of a flow classifier.
*
* @param id
* flow classifier id
*/
@Path("{flow_id}")
@DELETE
public void deleteFlowClassifier(@PathParam("flow_id") String id) {
log.debug("Deletes flow classifier by identifier {}.", id);
FlowClassifierId flowClassifierId = FlowClassifierId.of(id);
Boolean issuccess = nullIsNotFound(get(FlowClassifierService.class).removeFlowClassifier(flowClassifierId),
FLOW_CLASSIFIER_NOT_FOUND);
}
}
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