com.github.autoscaler.source.dockerswarm.DockerSwarmServiceSourceProvider Maven / Gradle / Ivy
/*
* Copyright 2015-2023 Open Text.
*
* Licensed 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 com.github.autoscaler.source.dockerswarm;
import com.github.autoscaler.api.ScalerException;
import com.github.autoscaler.api.ServiceSource;
import com.github.autoscaler.api.ServiceSourceProvider;
import com.github.autoscaler.dockerswarm.shared.DockerSwarmAutoscaleConfiguration;
import com.hpe.caf.api.ConfigurationException;
import com.hpe.caf.api.ConfigurationSource;
import com.hpe.caf.naming.ServicePath;
import java.net.MalformedURLException;
import java.net.URL;
public class DockerSwarmServiceSourceProvider implements ServiceSourceProvider
{
@Override
public ServiceSource getServiceSource(final ConfigurationSource configurationSource, final ServicePath servicePath)
throws ScalerException
{
try {
final DockerSwarmAutoscaleConfiguration config = configurationSource.getConfiguration(DockerSwarmAutoscaleConfiguration.class);
final URL url = new URL(config.getEndpoint());
final String stackId = getStackId(config, servicePath);
return new DockerSwarmServiceSource(config, url);
} catch (ConfigurationException | MalformedURLException e) {
throw new ScalerException("Failed to create service source", e);
}
}
/**
* Gets the stackId from configuration, if no valid configuration given, decision was taken to error out and not to look through
* all stacks deployed on the swarm.
*/
private static String getStackId(final DockerSwarmAutoscaleConfiguration config, final ServicePath servicePath) throws ConfigurationException
{
final String stackPath = config.getStackId();
if (stackPath == null || stackPath.isEmpty() ) {
// Check should we fallback to service path - CAF-3093
throw new ConfigurationException("Invalid configuration, no valid autoscaler stack identifier has been specified for scaling.");
}
return stackPath;
}
}