/**
* 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.loadbalancer;
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.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 MembersResource extends ServerResource {
protected static Logger log = LoggerFactory.getLogger(MembersResource.class);
@Get("json")
public Collection <LBMember> retrieve() {
ILoadBalancerService lbs =
(ILoadBalancerService)getContext().getAttributes().
get(ILoadBalancerService.class.getCanonicalName());
String memberId = (String) getRequestAttributes().get("member");
if (memberId!=null)
return lbs.listMember(memberId);
else
return lbs.listMembers();
}
@Put
@Post
public LBMember createMember(String postData) {
LBMember member=null;
try {
member=jsonToMember(postData);
} catch (IOException e) {
log.error("Could not parse JSON {}", e.getMessage());
}
ILoadBalancerService lbs =
(ILoadBalancerService)getContext().getAttributes().
get(ILoadBalancerService.class.getCanonicalName());
String memberId = (String) getRequestAttributes().get("member");
if (memberId != null)
return lbs.updateMember(member);
else
return lbs.createMember(member);
}
@Delete
public int removeMember() {
String memberId = (String) getRequestAttributes().get("member");
ILoadBalancerService lbs =
(ILoadBalancerService)getContext().getAttributes().
get(ILoadBalancerService.class.getCanonicalName());
return lbs.removeMember(memberId);
}
protected LBMember jsonToMember(String json) throws IOException {
MappingJsonFactory f = new MappingJsonFactory();
JsonParser jp;
LBMember member = new LBMember();
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;
if (n.equals("id")) {
member.id = jp.getText();
continue;
} else
if (n.equals("address")) {
member.address = IPv4.toIPv4Address(jp.getText());
continue;
} else
if (n.equals("port")) {
member.port = Short.parseShort(jp.getText());
continue;
} else
if (n.equals("connection_limit")) {
member.connectionLimit = Integer.parseInt(jp.getText());
continue;
} else
if (n.equals("admin_state")) {
member.adminState = Short.parseShort(jp.getText());
continue;
} else
if (n.equals("status")) {
member.status = Short.parseShort(jp.getText());
continue;
} else
if (n.equals("pool_id")) {
member.poolId = jp.getText();
continue;
}
log.warn("Unrecognized field {} in " +
"parsing Members",
jp.getText());
}
jp.close();
return member;
}
}