/*
* 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.openstack.trove.v1.utils;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import javax.annotation.Resource;
import org.jclouds.openstack.trove.v1.TroveApi;
import org.jclouds.openstack.trove.v1.domain.Instance;
import org.jclouds.openstack.trove.v1.features.InstanceApi;
import org.jclouds.openstack.trove.v1.predicates.InstancePredicates;
import org.jclouds.logging.Logger;
import com.google.common.util.concurrent.Uninterruptibles;
/**
* @author Zack Shoylev
*
* Helper methods for dealing with instances that get created with errors.
*/
public class TroveUtils {
private final TroveApi api;
@Resource
protected Logger logger = Logger.NULL;
public TroveUtils(TroveApi api) {
this.api = api;
}
/**
* Create an ACTIVE operational instance.
*
* @see InstanceApi#create(String, int, String)
*
* @param zone
* The instance zone or region.
* @param name
* Instance name.
* @param flavorId
* Id of the flavor to be used when creating the instance.
* @param size
* Size of the instance.
* @return Instance object in active state or NULL.
*/
public Instance getWorkingInstance(String zone, String name, String flavorId, int size) {
InstanceApi instanceApi = api.getInstanceApiForZone(zone);
for (int retries = 0; retries < 10; retries++) {
Instance instance = null;
try {
instance = instanceApi.create(flavorId, size, name);
} catch (Exception e) {
Uninterruptibles.sleepUninterruptibly(15, TimeUnit.SECONDS);
logger.error(e.getStackTrace().toString());
continue;
}
Instance updatedInstance = awaitAvailable(instance, instanceApi);
if (updatedInstance != null) {
return updatedInstance;
}
instanceApi.delete(instance.getId());
InstancePredicates.awaitDeleted(instanceApi).apply(instance);
}
return null;
}
/**
* This will return a small working instance.
*
* @param zone The zone where the instance should be created.
* @return A working database instance.
*/
public Instance getWorkingInstance(String zone) {
return getWorkingInstance(zone, UUID.randomUUID().toString(), "1", 1);
}
private Instance awaitAvailable(Instance instance, InstanceApi iapi) {
for (int n = 0; n < 100; n = n + 1) {
Instance updatedInstance = iapi.get(instance.getId());
if (updatedInstance.getStatus() == Instance.Status.ACTIVE)
return updatedInstance;
if (updatedInstance.getStatus() == Instance.Status.UNRECOGNIZED)
return null; // fast fail
Uninterruptibles.sleepUninterruptibly(15, TimeUnit.SECONDS);
}
return null;
}
}