org.jclouds.aws.ec2.compute.loaders.AWSEC2CreateSecurityGroupIfNeeded.java Source code

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Here is the source code for org.jclouds.aws.ec2.compute.loaders.AWSEC2CreateSecurityGroupIfNeeded.java

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/*
 * 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.jclouds.aws.ec2.compute.loaders;

import static com.google.common.base.Preconditions.checkNotNull;
import static org.jclouds.compute.util.ComputeServiceUtils.getPortRangesFromList;

import java.util.Map;
import java.util.Set;

import javax.annotation.Resource;
import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import org.jclouds.aws.ec2.AWSEC2Api;
import org.jclouds.aws.ec2.features.AWSSecurityGroupApi;
import org.jclouds.compute.reference.ComputeServiceConstants;
import org.jclouds.ec2.compute.domain.RegionAndName;
import org.jclouds.ec2.compute.domain.RegionNameAndIngressRules;
import org.jclouds.logging.Logger;
import org.jclouds.net.domain.IpPermission;
import org.jclouds.net.domain.IpProtocol;

import com.google.common.base.Function;
import com.google.common.base.Predicate;
import com.google.common.cache.CacheLoader;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;

/**
 * 
 * @author Adrian Cole
 * @author Andrew Bayer
 */
@Singleton
public class AWSEC2CreateSecurityGroupIfNeeded extends CacheLoader<RegionAndName, String> {
    @Resource
    @Named(ComputeServiceConstants.COMPUTE_LOGGER)
    protected Logger logger = Logger.NULL;
    protected final AWSSecurityGroupApi securityApi;
    protected final Predicate<RegionAndName> securityGroupEventualConsistencyDelay;
    protected final Function<String, String> groupNameToId;

    @Inject
    public AWSEC2CreateSecurityGroupIfNeeded(AWSEC2Api ec2Api,
            @Named("SECGROUP_NAME_TO_ID") Function<String, String> groupNameToId,
            @Named("SECURITY") Predicate<RegionAndName> securityGroupEventualConsistencyDelay) {
        this(checkNotNull(ec2Api, "ec2Api").getSecurityGroupApi().get(), groupNameToId,
                securityGroupEventualConsistencyDelay);
    }

    public AWSEC2CreateSecurityGroupIfNeeded(AWSSecurityGroupApi securityApi,
            @Named("SECGROUP_NAME_TO_ID") Function<String, String> groupNameToId,
            @Named("SECURITY") Predicate<RegionAndName> securityGroupEventualConsistencyDelay) {
        this.securityApi = checkNotNull(securityApi, "securityApi");
        this.groupNameToId = checkNotNull(groupNameToId, "groupNameToId");
        this.securityGroupEventualConsistencyDelay = checkNotNull(securityGroupEventualConsistencyDelay,
                "securityGroupEventualConsistencyDelay");
    }

    @Override
    public String load(RegionAndName from) {
        RegionNameAndIngressRules realFrom = RegionNameAndIngressRules.class.cast(from);
        createSecurityGroupInRegion(from.getRegion(), from.getName(), realFrom.getPorts());
        return from.getName();
    }

    private void createSecurityGroupInRegion(String region, String name, int... ports) {
        checkNotNull(region, "region");
        checkNotNull(name, "name");
        logger.debug(">> creating securityGroup region(%s) name(%s)", region, name);

        try {
            securityApi.createSecurityGroupInRegion(region, name, name);
            boolean created = securityGroupEventualConsistencyDelay.apply(new RegionAndName(region, name));
            if (!created)
                throw new RuntimeException(
                        String.format("security group %s/%s is not available after creating", region, name));
            logger.debug("<< created securityGroup(%s)", name);

            ImmutableSet.Builder<IpPermission> permissions = ImmutableSet.builder();
            String id;
            if (name.startsWith("sg-")) {
                id = name;
            } else {
                id = groupNameToId.apply(new RegionAndName(region, name).slashEncode());
            }

            if (ports.length > 0) {
                for (Map.Entry<Integer, Integer> range : getPortRangesFromList(ports).entrySet()) {
                    permissions.add(IpPermission.builder().fromPort(range.getKey()).toPort(range.getValue())
                            .ipProtocol(IpProtocol.TCP).cidrBlock("0.0.0.0/0").build());
                }

                String myOwnerId = Iterables.get(securityApi.describeSecurityGroupsInRegion(region, name), 0)
                        .getOwnerId();
                permissions.add(IpPermission.builder().fromPort(0).toPort(65535).ipProtocol(IpProtocol.TCP)
                        .tenantIdGroupNamePair(myOwnerId, id).build());
                permissions.add(IpPermission.builder().fromPort(0).toPort(65535).ipProtocol(IpProtocol.UDP)
                        .tenantIdGroupNamePair(myOwnerId, id).build());
            }

            Set<IpPermission> perms = permissions.build();

            if (perms.size() > 0) {
                logger.debug(">> authorizing securityGroup region(%s) name(%s) IpPermissions(%s)", region, name,
                        perms);
                securityApi.authorizeSecurityGroupIngressInRegion(region, id, perms);
                logger.debug("<< authorized securityGroup(%s)", name);
            }

        } catch (IllegalStateException e) {
            logger.debug("<< reused securityGroup(%s)", name);
        }
    }

}