/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.whirr.service.jclouds;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import org.apache.commons.io.IOUtils;
import org.apache.whirr.service.ClusterSpec;
import org.jclouds.aws.ec2.EC2Client;
import org.jclouds.aws.ec2.domain.IpProtocol;
import org.jclouds.aws.ec2.util.EC2Utils;
import org.jclouds.compute.ComputeServiceContext;
import org.jclouds.compute.domain.NodeMetadata;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
/**
* Utility functions for controlling firewall settings for a cluster.
*/
public class FirewallSettings {
/**
* @return the IP address of the client on which this code is running.
* @throws IOException
*/
public static String getOriginatingIp() throws IOException {
URL url = new URL("http://checkip.amazonaws.com/");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.connect();
return IOUtils.toString(connection.getInputStream()).trim() + "/32";
}
public static void authorizeIngress(ComputeServiceContext computeServiceContext,
NodeMetadata node, ClusterSpec clusterSpec, int... ports) throws IOException {
authorizeIngress(computeServiceContext, Collections.singleton(node),
clusterSpec, ports);
}
public static void authorizeIngress(ComputeServiceContext computeServiceContext,
NodeMetadata node, ClusterSpec clusterSpec, String ip, int... ports) {
authorizeIngress(computeServiceContext, Collections.singleton(node),
clusterSpec, Lists.newArrayList(ip + "/32"), ports);
}
public static void authorizeIngress(ComputeServiceContext computeServiceContext,
Set<? extends NodeMetadata> nodes, ClusterSpec clusterSpec, int... ports) throws IOException {
List<String> cidrs = clusterSpec.getClientCidrs();
if (cidrs == null || cidrs.isEmpty()) {
cidrs = Lists.newArrayList(getOriginatingIp());
}
authorizeIngress(computeServiceContext, nodes, clusterSpec, cidrs, ports);
}
private static void authorizeIngress(ComputeServiceContext computeServiceContext,
Set<? extends NodeMetadata> nodes, ClusterSpec clusterSpec, List<String> cidrs, int... ports) {
if (clusterSpec.getProvider().equals("ec2")) {
// This code (or something like it) may be added to jclouds (see
// http://code.google.com/p/jclouds/issues/detail?id=336).
// Until then we need this temporary workaround.
String region = EC2Utils.parseHandle(Iterables.get(nodes, 0).getId())[0];
EC2Client ec2Client = EC2Client.class.cast(
computeServiceContext.getProviderSpecificContext().getApi());
String groupName = "jclouds#" + clusterSpec.getClusterName() + "#" + region;
for (String cidr : cidrs) {
for (int port : ports) {
ec2Client.getSecurityGroupServices()
.authorizeSecurityGroupIngressInRegion(region, groupName,
IpProtocol.TCP, port, port, cidr);
}
}
}
}
}