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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.dhcp.rest;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.google.common.collect.Lists;
import org.onlab.packet.Ip4Address;
import org.onlab.packet.MacAddress;
import org.onosproject.dhcp.DhcpService;
import org.onosproject.dhcp.IpAssignment;
import org.onosproject.net.HostId;
import org.onosproject.rest.AbstractWebResource;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
/**
* Manage DHCP address assignments.
*/
@Path("dhcp")
public class DhcpWebResource extends AbstractWebResource {
final DhcpService service = get(DhcpService.class);
/**
* Get DHCP server configuration data.
* Shows lease, renewal and rebinding times in seconds.
*
* @return 200 OK
* @rsModel DhcpConfigGet
*/
@GET
@Path("config")
public Response getConfigs() {
DhcpService service = get(DhcpService.class);
ObjectNode node = mapper().createObjectNode()
.put("leaseTime", service.getLeaseTime())
.put("renewalTime", service.getRenewalTime())
.put("rebindingTime", service.getRebindingTime());
return ok(node.toString()).build();
}
/**
* Get all MAC/IP mappings.
* Shows all MAC/IP mappings held by the DHCP server.
*
* @rsModel DhcpConfigGetMappings
* @return 200 OK
*/
@GET
@Path("mappings")
public Response listMappings() {
ObjectNode root = mapper().createObjectNode();
final Map<HostId, IpAssignment> intents = service.listMapping();
ArrayNode arrayNode = root.putArray("mappings");
intents.entrySet().forEach(i -> arrayNode.add(mapper().createObjectNode()
.put("host", i.getKey().toString())
.put("ip", i.getValue().ipAddress().toString())));
return ok(root.toString()).build();
}
/**
* Get all available IPs.
* Shows all the IPs in the free pool of the DHCP Server.
*
* @rsModel DhcpConfigGetAvailable
* @return 200 OK
*/
@GET
@Path("available")
public Response listAvailableIPs() {
final Iterable<Ip4Address> availableIPList = service.getAvailableIPs();
final ObjectNode root = mapper().createObjectNode();
ArrayNode arrayNode = root.putArray("availableIP");
availableIPList.forEach(i -> arrayNode.add(i.toString()));
return ok(root.toString()).build();
}
/**
* Post a new static MAC/IP binding.
* Registers a static binding to the DHCP server, and displays the current set of bindings.
*
* @rsModel DhcpConfigPut
* @param stream JSON stream
* @return 200 OK
*/
@POST
@Path("mappings")
@Consumes(MediaType.APPLICATION_JSON)
public Response setMapping(InputStream stream) {
ObjectNode root = mapper().createObjectNode();
try {
ObjectNode jsonTree = (ObjectNode) mapper().readTree(stream);
JsonNode macID = jsonTree.get("mac");
JsonNode ip = jsonTree.get("ip");
if (macID != null && ip != null) {
if (!service.setStaticMapping(MacAddress.valueOf(macID.asText()),
Ip4Address.valueOf(ip.asText()),
false, Lists.newArrayList())) {
throw new IllegalArgumentException("Static Mapping Failed. " +
"The IP maybe unavailable.");
}
}
final Map<HostId, IpAssignment> intents = service.listMapping();
ArrayNode arrayNode = root.putArray("mappings");
intents.entrySet().forEach(i -> arrayNode.add(mapper().createObjectNode()
.put("host", i.getKey().toString())
.put("ip", i.getValue().ipAddress().toString())));
} catch (IOException e) {
throw new IllegalArgumentException(e.getMessage());
}
return ok(root.toString()).build();
}
/**
* Delete a static MAC/IP binding.
* Removes a static binding from the DHCP Server, and displays the current set of bindings.
*
* @param macID mac address identifier
* @return 200 OK
*/
@DELETE
@Path("mappings/{macID}")
public Response deleteMapping(@PathParam("macID") String macID) {
ObjectNode root = mapper().createObjectNode();
if (!service.removeStaticMapping(MacAddress.valueOf(macID))) {
throw new IllegalArgumentException("Static Mapping Removal Failed.");
}
final Map<HostId, IpAssignment> intents = service.listMapping();
ArrayNode arrayNode = root.putArray("mappings");
intents.entrySet().forEach(i -> arrayNode.add(mapper().createObjectNode()
.put("host", i.getKey().toString())
.put("ip", i.getValue().ipAddress().toString())));
return ok(root.toString()).build();
}
}
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