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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.openstackswitching;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.google.common.collect.Lists;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.WebResource;
import org.onosproject.openstackswitching.web.OpenstackNetworkCodec;
import org.onosproject.openstackswitching.web.OpenstackPortCodec;
import org.onosproject.openstackswitching.web.OpenstackSubnetCodec;
import org.slf4j.Logger;
import javax.ws.rs.core.MediaType;
import java.io.IOException;
import java.util.Collection;
import java.util.List;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.net.MediaType.JSON_UTF_8;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Handles REST Calls to Openstack Neutron.
*
*/
public class OpenstackRestHandler {
private final Logger log = getLogger(getClass());
private String neutronUrl;
private String keystoneUrl;
private String tokenId;
private String userName;
private String pass;
/**
* Creates OpenstackRestHandler instance.
*
* @param cfg OpenstackSwitchingConfig reference
*/
public OpenstackRestHandler(OpenstackSwitchingConfig cfg) {
this.neutronUrl = checkNotNull(cfg.neutronServer());
this.keystoneUrl = checkNotNull(cfg.keystoneServer());
this.userName = checkNotNull(cfg.userName());
this.pass = checkNotNull(cfg.password());
}
/**
* Returns network information stored in Neutron.
*
* @return List of OpenstackNetwork
*/
public Collection<OpenstackNetwork> getNetworks() {
WebResource.Builder builder = getClientBuilder(neutronUrl + "networks");
String response = builder.accept(MediaType.APPLICATION_JSON_TYPE).
header("X-Auth-Token", getToken()).get(String.class);
ObjectMapper mapper = new ObjectMapper();
List<OpenstackNetwork> openstackNetworks = Lists.newArrayList();
try {
ObjectNode node = (ObjectNode) mapper.readTree(response);
ArrayNode networkList = (ArrayNode) node.path("networks");
OpenstackNetworkCodec networkCodec = new OpenstackNetworkCodec();
networkList.forEach(n -> openstackNetworks.add(networkCodec.decode((ObjectNode) n, null)));
} catch (IOException e) {
e.printStackTrace();
}
log.debug("networks response:" + response);
openstackNetworks.forEach(n -> log.debug("network ID: {}", n.id()));
return openstackNetworks;
}
/**
* Returns port information stored in Neutron.
*
* @return List of OpenstackPort
*/
public Collection<OpenstackPort> getPorts() {
WebResource.Builder builder = getClientBuilder(neutronUrl + "ports");
String response = builder.accept(MediaType.APPLICATION_JSON_TYPE).
header("X-Auth-Token", getToken()).get(String.class);
ObjectMapper mapper = new ObjectMapper();
List<OpenstackPort> openstackPorts = Lists.newArrayList();
try {
ObjectNode node = (ObjectNode) mapper.readTree(response);
ArrayNode portList = (ArrayNode) node.path("ports");
OpenstackPortCodec portCodec = new OpenstackPortCodec();
portList.forEach(p -> openstackPorts.add(portCodec.decode((ObjectNode) p, null)));
} catch (IOException e) {
e.printStackTrace();
}
log.debug("port response:" + response);
openstackPorts.forEach(n -> log.debug("port ID: {}", n.id()));
return openstackPorts;
}
/**
* Returns Subnet information in Neutron.
*
* @return List of OpenstackSubnet
*/
public Collection<OpenstackSubnet> getSubnets() {
WebResource.Builder builder = getClientBuilder(neutronUrl + "subnets");
String response = builder.accept(MediaType.APPLICATION_JSON_TYPE).
header("X-Auth-Token", getToken()).get(String.class);
ObjectMapper mapper = new ObjectMapper();
List<OpenstackSubnet> subnets = Lists.newArrayList();
try {
ObjectNode node = (ObjectNode) mapper.readTree(response);
ArrayNode subnetList = (ArrayNode) node.path("subnets");
OpenstackSubnetCodec subnetCodec = new OpenstackSubnetCodec();
subnetList.forEach(s -> subnets.add(subnetCodec.decode((ObjectNode) s, null)));
} catch (IOException e) {
e.printStackTrace();
}
log.debug("subnets response:" + response);
subnets.forEach(s -> log.debug("subnet ID: {}", s.id()));
return subnets;
}
private WebResource.Builder getClientBuilder(String uri) {
Client client = Client.create();
WebResource resource = client.resource(uri);
return resource.accept(JSON_UTF_8.toString())
.type(JSON_UTF_8.toString());
}
private String getToken() {
if (isTokenInvalid()) {
String request = "{\"auth\": {\"tenantName\": \"admin\", " +
"\"passwordCredentials\": {\"username\": \"" +
userName + "\",\"password\": \"" + pass + "\"}}}";
WebResource.Builder builder = getClientBuilder(keystoneUrl + "tokens");
String response = builder.accept(MediaType.APPLICATION_JSON).post(String.class, request);
ObjectMapper mapper = new ObjectMapper();
try {
ObjectNode node = (ObjectNode) mapper.readTree(response);
tokenId = node.path("access").path("token").path("id").asText();
} catch (IOException e) {
e.printStackTrace();
}
log.debug("token response:" + response);
}
return tokenId;
}
private boolean isTokenInvalid() {
//TODO: validation check for the existing token
return true;
}
}
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