/**
* 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.hadoop.gateway.ha.deploy;
import org.apache.hadoop.gateway.deploy.DeploymentContext;
import org.apache.hadoop.gateway.deploy.ProviderDeploymentContributorBase;
import org.apache.hadoop.gateway.descriptor.FilterParamDescriptor;
import org.apache.hadoop.gateway.descriptor.ResourceDescriptor;
import org.apache.hadoop.gateway.ha.provider.HaDescriptor;
import org.apache.hadoop.gateway.ha.provider.HaServiceConfig;
import org.apache.hadoop.gateway.ha.provider.HaServletContextListener;
import org.apache.hadoop.gateway.ha.provider.impl.HaDescriptorFactory;
import org.apache.hadoop.gateway.ha.provider.impl.HaDescriptorManager;
import org.apache.hadoop.gateway.ha.provider.impl.i18n.HaMessages;
import org.apache.hadoop.gateway.i18n.messages.MessagesFactory;
import org.apache.hadoop.gateway.topology.Provider;
import org.apache.hadoop.gateway.topology.Service;
import org.jboss.shrinkwrap.api.asset.StringAsset;
import java.io.IOException;
import java.io.StringWriter;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
public class HaProviderDeploymentContributor extends ProviderDeploymentContributorBase {
private static final String PROVIDER_ROLE_NAME = "ha";
private static final String PROVIDER_IMPL_NAME = "HaProvider";
private static final String HA_DESCRIPTOR_NAME = "ha.provider.descriptor";
private static final HaMessages LOG = MessagesFactory.get(HaMessages.class);
@Override
public String getRole() {
return PROVIDER_ROLE_NAME;
}
@Override
public String getName() {
return PROVIDER_IMPL_NAME;
}
@Override
public void contributeProvider(DeploymentContext context, Provider provider) {
Map<String, String> params = provider.getParams();
HaDescriptor descriptor = HaDescriptorFactory.createDescriptor();
for (Entry<String, String> entry : params.entrySet()) {
HaServiceConfig config = HaDescriptorFactory.createServiceConfig(entry.getKey(), entry.getValue());
descriptor.addServiceConfig(config);
}
StringWriter writer = new StringWriter();
try {
HaDescriptorManager.store(descriptor, writer);
} catch (IOException e) {
LOG.failedToWriteHaDescriptor(e);
}
String asset = writer.toString();
context.getWebArchive().addAsWebInfResource(
new StringAsset(asset),
HaServletContextListener.DESCRIPTOR_DEFAULT_FILE_NAME);
context.addDescriptor(HA_DESCRIPTOR_NAME, descriptor);
}
@Override
public void finalizeContribution(DeploymentContext context) {
if (context.getDescriptor(HA_DESCRIPTOR_NAME) != null) {
// Tell the provider the location of the descriptor.
// Doing this here instead of in 'contributeProvider' so that this ServletContextListener comes after the gateway services have been set.
context.getWebAppDescriptor().createListener().listenerClass(HaServletContextListener.class.getName());
context.getWebAppDescriptor().createContextParam()
.paramName(HaServletContextListener.DESCRIPTOR_LOCATION_INIT_PARAM_NAME)
.paramValue(HaServletContextListener.DESCRIPTOR_DEFAULT_LOCATION);
}
}
@Override
public void contributeFilter(DeploymentContext context, Provider provider, Service service, ResourceDescriptor resource, List<FilterParamDescriptor> params) {
//no op
}
}