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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.googlecomputeengine.compute;

import static org.jclouds.compute.config.ComputeServiceProperties.TIMEOUT_NODE_RUNNING;
import static org.jclouds.compute.config.ComputeServiceProperties.TIMEOUT_NODE_SUSPENDED;
import static org.jclouds.compute.config.ComputeServiceProperties.TIMEOUT_NODE_TERMINATED;
import static org.jclouds.googlecloud.internal.ListPages.concat;

import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicReference;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Provider;

import org.jclouds.Constants;
import org.jclouds.collect.Memoized;
import org.jclouds.compute.ComputeServiceContext;
import org.jclouds.compute.callables.RunScriptOnNode;
import org.jclouds.compute.domain.Hardware;
import org.jclouds.compute.domain.Image;
import org.jclouds.compute.domain.NodeMetadata;
import org.jclouds.compute.domain.TemplateBuilder;
import org.jclouds.compute.extensions.ImageExtension;
import org.jclouds.compute.extensions.SecurityGroupExtension;
import org.jclouds.compute.extensions.internal.DelegatingImageExtension;
import org.jclouds.compute.functions.GroupNamingConvention;
import org.jclouds.compute.internal.BaseComputeService;
import org.jclouds.compute.internal.PersistNodeCredentials;
import org.jclouds.compute.options.TemplateOptions;
import org.jclouds.compute.strategy.CreateNodesInGroupThenAddToSet;
import org.jclouds.compute.strategy.DestroyNodeStrategy;
import org.jclouds.compute.strategy.GetImageStrategy;
import org.jclouds.compute.strategy.GetNodeMetadataStrategy;
import org.jclouds.compute.strategy.InitializeRunScriptOnNodeOrPlaceInBadMap;
import org.jclouds.compute.strategy.ListNodesStrategy;
import org.jclouds.compute.strategy.RebootNodeStrategy;
import org.jclouds.compute.strategy.ResumeNodeStrategy;
import org.jclouds.compute.strategy.SuspendNodeStrategy;
import org.jclouds.domain.Credentials;
import org.jclouds.domain.Location;
import org.jclouds.googlecomputeengine.GoogleComputeEngineApi;
import org.jclouds.googlecomputeengine.compute.options.GoogleComputeEngineTemplateOptions;
import org.jclouds.googlecomputeengine.domain.Firewall;
import org.jclouds.googlecomputeengine.domain.Operation;
import org.jclouds.googlecomputeengine.features.FirewallApi;
import org.jclouds.scriptbuilder.functions.InitAdminAccess;

import shaded.com.google.common.base.Function;
import shaded.com.google.common.base.Optional;
import shaded.com.google.common.base.Predicate;
import shaded.com.google.common.base.Supplier;
import shaded.com.google.common.util.concurrent.Atomics;
import shaded.com.google.common.util.concurrent.ListeningExecutorService;

public final class GoogleComputeEngineService extends BaseComputeService {

   private final Function, Set> findOrphanedGroups;
   private final GroupNamingConvention.Factory namingConvention;
   private final GoogleComputeEngineApi api;
   private final Predicate> operationDone;

   @Inject
   GoogleComputeEngineService(ComputeServiceContext context, Map credentialStore,
         @Memoized Supplier> images, @Memoized Supplier> hardwareProfiles,
         @Memoized Supplier> locations, ListNodesStrategy listNodesStrategy,
         GetImageStrategy getImageStrategy, GetNodeMetadataStrategy getNodeMetadataStrategy,
         CreateNodesInGroupThenAddToSet runNodesAndAddToSetStrategy, RebootNodeStrategy rebootNodeStrategy,
         DestroyNodeStrategy destroyNodeStrategy, ResumeNodeStrategy resumeNodeStrategy,
         SuspendNodeStrategy suspendNodeStrategy, Provider templateBuilderProvider,
         @Named("DEFAULT") Provider templateOptionsProvider,
         @Named(TIMEOUT_NODE_RUNNING) Predicate> nodeRunning,
         @Named(TIMEOUT_NODE_TERMINATED) Predicate> nodeTerminated,
         @Named(TIMEOUT_NODE_SUSPENDED) Predicate> nodeSuspended,
         InitializeRunScriptOnNodeOrPlaceInBadMap.Factory initScriptRunnerFactory, InitAdminAccess initAdminAccess,
         RunScriptOnNode.Factory runScriptOnNodeFactory, PersistNodeCredentials persistNodeCredentials,
         @Named(Constants.PROPERTY_USER_THREADS) ListeningExecutorService userExecutor,
         Optional imageExtension, Optional securityGroupExtension,
         Function, Set> findOrphanedGroups,
         GroupNamingConvention.Factory namingConvention, GoogleComputeEngineApi api,
         Predicate> operationDone, DelegatingImageExtension.Factory delegatingImageExtension) {
      super(context, credentialStore, images, hardwareProfiles, locations, listNodesStrategy, getImageStrategy,
            getNodeMetadataStrategy, runNodesAndAddToSetStrategy, rebootNodeStrategy, destroyNodeStrategy,
            resumeNodeStrategy, suspendNodeStrategy, templateBuilderProvider, templateOptionsProvider, nodeRunning,
            nodeTerminated, nodeSuspended, initScriptRunnerFactory, initAdminAccess, runScriptOnNodeFactory,
            persistNodeCredentials, userExecutor, imageExtension, securityGroupExtension, delegatingImageExtension);
      this.findOrphanedGroups = findOrphanedGroups;
      this.namingConvention = namingConvention;
      this.api = api;
      this.operationDone = operationDone;
   }
   
   @Override
   protected synchronized void cleanUpIncidentalResourcesOfDeadNodes(Set deadNodes) {
      Set orphanedGroups = findOrphanedGroups.apply(deadNodes);
      for (String orphanedGroup : orphanedGroups) {
         cleanUpFirewallsForGroup(orphanedGroup);
      }
   }

   private void cleanUpFirewallsForGroup(final String groupName) {
      GroupNamingConvention namingScheme = namingConvention.create();
      FirewallApi firewallApi = api.firewalls();

      for (Firewall firewall : concat(firewallApi.list())) {
         String foundGroup = namingScheme.groupInUniqueNameOrNull(firewall.name());
         if ((foundGroup != null) && foundGroup.equals(groupName)){
            AtomicReference operation = Atomics.newReference(firewallApi.delete(firewall.name()));
            operationDone.apply(operation);

            if (operation.get().httpErrorStatusCode() != null) {
               logger.warn("delete orphaned firewall %s failed. Http Error Code: %d HttpError: %s",
                     operation.get().targetId(), operation.get().httpErrorStatusCode(),
                     operation.get().httpErrorMessage());
            }
         }
      }
   }

   @Override
   public GoogleComputeEngineTemplateOptions templateOptions() {
      return GoogleComputeEngineTemplateOptions.class.cast(super.templateOptions());
   }
}