/*
* Copyright 2012 Netflix, Inc.
*
* 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.netflix.recipes.rss.hystrix;
import com.google.common.base.Charsets;
import com.netflix.client.ClientFactory;
import com.netflix.hystrix.HystrixCommand;
import com.netflix.hystrix.HystrixCommandGroupKey;
import com.netflix.hystrix.HystrixCommandKey;
import com.netflix.hystrix.HystrixThreadPoolKey;
import com.netflix.niws.client.http.HttpClientRequest;
import com.netflix.niws.client.http.HttpClientRequest.Verb;
import com.netflix.niws.client.http.HttpClientResponse;
import com.netflix.niws.client.http.RestClient;
import com.netflix.recipes.rss.RSSConstants;
import org.apache.commons.io.IOUtils;
import java.net.URI;
/**
* Calls the middle tier Delete RSS entry point
*/
public class DeleteRSSCommand extends HystrixCommand<String> {
// RSS Feed Url (encoded)
private final String url;
public DeleteRSSCommand(String url) {
super (
Setter.withGroupKey(
HystrixCommandGroupKey.Factory.asKey(RSSConstants.HYSTRIX_RSS_MUTATIONS_GROUP))
.andCommandKey(HystrixCommandKey.Factory.asKey(RSSConstants.HYSTRIX_RSS_DEL_COMMAND_KEY))
.andThreadPoolKey(HystrixThreadPoolKey.Factory.asKey(RSSConstants.HYSTRIX_RSS_THREAD_POOL)
)
);
this.url = url;
}
@Override
protected String run() {
try {
// The named client param must match the prefix for the ribbon
// configuration specified in the edge.properties file
RestClient client = (RestClient) ClientFactory.getNamedClient(RSSConstants.MIDDLETIER_REST_CLIENT);
HttpClientRequest request = HttpClientRequest
.newBuilder()
.setVerb(Verb.DELETE)
.setUri(new URI("/"
+ RSSConstants.MIDDLETIER_WEB_RESOURCE_ROOT_PATH
+ RSSConstants.RSS_ENTRY_POINT
+ "?url=" + url)
)
.build();
HttpClientResponse response = client.executeWithLoadBalancer(request);
return IOUtils.toString(response.getRawEntity(), Charsets.UTF_8);
} catch (Exception exc) {
throw new RuntimeException("Exception", exc);
}
}
@Override
protected String getFallback() {
// Empty json
return "{}";
}
}