/**
* 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.webhcat;
import org.apache.hadoop.gateway.deploy.DeploymentContext;
import org.apache.hadoop.gateway.deploy.ServiceDeploymentContributorBase;
import org.apache.hadoop.gateway.descriptor.ResourceDescriptor;
import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteRuleDescriptor;
import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteRulesDescriptor;
import org.apache.hadoop.gateway.filter.rewrite.ext.UrlRewriteActionRewriteDescriptorExt;
import org.apache.hadoop.gateway.topology.Service;
import java.net.URISyntaxException;
public class WebHCatDeploymentContributor extends ServiceDeploymentContributorBase {
private static final String WEBHCAT_EXTERNAL_PATH = "/templeton/v1";
@Override
public String getRole() {
return "WEBHCAT";
}
@Override
public String getName() {
return "webhcat";
}
@Override
public void contributeService( DeploymentContext context, Service service ) throws URISyntaxException {
UrlRewriteRulesDescriptor rules = context.getDescriptor( "rewrite" );
UrlRewriteRuleDescriptor rule;
UrlRewriteActionRewriteDescriptorExt rewrite;
rule = rules.addRule( getRole() + "/" + getName() + "/request" )
.directions( "request" )
.pattern( "*://*:*/**" + WEBHCAT_EXTERNAL_PATH + "/{path=**}?{**}" );
rewrite = rule.addStep( "rewrite" );
rewrite.template( service.getUrl() + "/v1/{path=**}?{**}" );
ResourceDescriptor resource = context.getGatewayDescriptor().addResource();
resource.role( service.getRole() );
resource.pattern( WEBHCAT_EXTERNAL_PATH + "/**?**" );
if (topologyContainsProviderType(context, "authentication")) {
context.contributeFilter( service, resource, "authentication", null, null );
}
if (topologyContainsProviderType(context, "federation")) {
context.contributeFilter( service, resource, "federation", null, null );
}
context.contributeFilter( service, resource, "rewrite", null, null );
context.contributeFilter( service, resource, "identity-assertion", null, null );
addAuthorizationFilter(context, service, resource);
context.contributeFilter( service, resource, "dispatch", null, null );
}
}