/**
* Copyright 2013, Big Switch Networks, Inc.
*
* 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 net.floodlightcontroller.virtualnetwork;
import java.io.IOException;
import java.util.Collection;
import net.floodlightcontroller.packet.IPv4;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.MappingJsonFactory;
import org.restlet.data.Status;
import org.restlet.resource.Delete;
import org.restlet.resource.Get;
import org.restlet.resource.Post;
import org.restlet.resource.Put;
import org.restlet.resource.ServerResource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class NetworkResource extends ServerResource {
protected static Logger log = LoggerFactory.getLogger(NetworkResource.class);
public class NetworkDefinition {
public String name = null;
public String guid = null;
public String gateway = null;
}
protected void jsonToNetworkDefinition(String json, NetworkDefinition network) throws IOException {
MappingJsonFactory f = new MappingJsonFactory();
JsonParser jp;
try {
jp = f.createJsonParser(json);
} catch (JsonParseException e) {
throw new IOException(e);
}
jp.nextToken();
if (jp.getCurrentToken() != JsonToken.START_OBJECT) {
throw new IOException("Expected START_OBJECT");
}
while (jp.nextToken() != JsonToken.END_OBJECT) {
if (jp.getCurrentToken() != JsonToken.FIELD_NAME) {
throw new IOException("Expected FIELD_NAME");
}
String n = jp.getCurrentName();
jp.nextToken();
if (jp.getText().equals(""))
continue;
else if (n.equals("network")) {
while (jp.nextToken() != JsonToken.END_OBJECT) {
String field = jp.getCurrentName();
if (field == null) continue;
if (field.equals("name")) {
network.name = jp.getText();
} else if (field.equals("gateway")) {
String gw = jp.getText();
if ((gw != null) && (!gw.equals("null")))
network.gateway = gw;
} else if (field.equals("id")) {
network.guid = jp.getText();
} else {
log.warn("Unrecognized field {} in " +
"parsing network definition",
jp.getText());
}
}
}
}
jp.close();
}
@Get("json")
public Collection <VirtualNetwork> retrieve() {
IVirtualNetworkService vns =
(IVirtualNetworkService)getContext().getAttributes().
get(IVirtualNetworkService.class.getCanonicalName());
return vns.listNetworks();
}
@Put
@Post
public String createNetwork(String postData) {
NetworkDefinition network = new NetworkDefinition();
try {
jsonToNetworkDefinition(postData, network);
} catch (IOException e) {
log.error("Could not parse JSON {}", e.getMessage());
}
// We try to get the ID from the URI only if it's not
// in the POST data
if (network.guid == null) {
String guid = (String) getRequestAttributes().get("network");
if ((guid != null) && (!guid.equals("null")))
network.guid = guid;
}
IVirtualNetworkService vns =
(IVirtualNetworkService)getContext().getAttributes().
get(IVirtualNetworkService.class.getCanonicalName());
Integer gw = null;
if (network.gateway != null) {
try {
gw = IPv4.toIPv4Address(network.gateway);
} catch (IllegalArgumentException e) {
log.warn("Could not parse gateway {} as IP for network {}, setting as null",
network.gateway, network.name);
network.gateway = null;
}
}
vns.createNetwork(network.guid, network.name, gw);
setStatus(Status.SUCCESS_OK);
return "{\"status\":\"ok\"}";
}
@Delete
public String deleteNetwork() {
IVirtualNetworkService vns =
(IVirtualNetworkService)getContext().getAttributes().
get(IVirtualNetworkService.class.getCanonicalName());
String guid = (String) getRequestAttributes().get("network");
vns.deleteNetwork(guid);
setStatus(Status.SUCCESS_OK);
return "{\"status\":\"ok\"}";
}
}