/*
* 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.provisionr.amazon;
import com.google.common.base.Optional;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.collect.Maps;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.runtime.ProcessInstance;
import org.apache.provisionr.amazon.config.DefaultProviderConfig;
import org.apache.provisionr.amazon.options.ProviderOptions;
import org.apache.provisionr.api.pool.Machine;
import org.apache.provisionr.api.pool.Pool;
import org.apache.provisionr.api.provider.Provider;
import org.apache.provisionr.core.CoreConstants;
import org.apache.provisionr.core.CoreProcessVariables;
import org.apache.provisionr.core.CoreSignals;
import org.apache.provisionr.core.PoolStatus;
import org.apache.provisionr.core.ProvisionrSupport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class AmazonProvisionr extends ProvisionrSupport {
public static final Logger LOG = LoggerFactory.getLogger(AmazonProvisionr.class);
public static final String ID = "amazon";
public static final String MANAGEMENT_PROCESS_KEY = "amazonPoolManagement";
private final ProcessEngine processEngine;
private final Optional<Provider> defaultProvider;
public AmazonProvisionr(ProcessEngine processEngine, DefaultProviderConfig defaultProviderConfig) {
this.processEngine = checkNotNull(processEngine, "processEngine is null");
this.defaultProvider = defaultProviderConfig.createProvider();
if (defaultProvider.isPresent()) {
LOG.info("Default provider for AmazonProvisionr is {}", defaultProvider.get());
} else {
LOG.info("No default provider configured for AmazonProvisionr");
}
}
@Override
public String getId() {
return ID;
}
@Override
public Optional<Provider> getDefaultProvider() {
return defaultProvider;
}
@Override
public String startPoolManagementProcess(String businessKey, Pool pool) {
Map<String, Object> arguments = Maps.newHashMap();
arguments.put(CoreProcessVariables.POOL, pool);
arguments.put(CoreProcessVariables.PROVIDER, getId());
arguments.put(CoreProcessVariables.POOL_BUSINESS_KEY, businessKey);
arguments.put(CoreProcessVariables.BOOTSTRAP_TIMEOUT,
convertTimeoutToISO8601TimeDuration(pool.getBootstrapTimeInSeconds()));
arguments.put(CoreProcessVariables.IS_CACHED_IMAGE, pool.getSoftware().isCachedImage());
/* needed because the Activiti EL doesn't work as expected and properties can't be read from the pool. */
arguments.put(ProcessVariables.SPOT_BID, pool.getProvider().getOption(ProviderOptions.SPOT_BID));
/* Authenticate as kermit to make the process visible in the Explorer UI */
processEngine.getIdentityService().setAuthenticatedUserId(CoreConstants.ACTIVITI_EXPLORER_DEFAULT_USER);
ProcessInstance instance = processEngine.getRuntimeService()
.startProcessInstanceByKey(MANAGEMENT_PROCESS_KEY, businessKey, arguments);
return instance.getProcessInstanceId();
}
@Override
public List<Machine> getMachines(String businessKey) {
ProcessInstance instance = processEngine.getRuntimeService().createProcessInstanceQuery()
.processInstanceBusinessKey(businessKey).singleResult();
if (instance == null) {
throw new NoSuchElementException("No active pool found with key: " + businessKey);
}
@SuppressWarnings("unchecked") List<Machine> machines = (List<Machine>) processEngine.getRuntimeService()
.getVariable(instance.getId(), CoreProcessVariables.MACHINES);
return Optional.fromNullable(machines).or(Collections.<Machine>emptyList());
}
@Override
public String getStatus(String businessKey) {
ProcessInstance instance = processEngine.getRuntimeService().createProcessInstanceQuery()
.processInstanceBusinessKey(businessKey).singleResult();
if (instance == null) {
throw new NoSuchElementException("No active pool found with key: " + businessKey);
}
String status = (String) processEngine.getRuntimeService().getVariable(instance.getId(),
CoreProcessVariables.STATUS);
return Optional.fromNullable(status).or(PoolStatus.UNDEFINED);
}
@Override
public void destroyPool(String businessKey) {
triggerSignalEvent(processEngine, businessKey, CoreSignals.TERMINATE_POOL);
}
}