org.jclouds.openstack.keystone.v1_1.handlers.RetryOnRenew.java Source code

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Here is the source code for org.jclouds.openstack.keystone.v1_1.handlers.RetryOnRenew.java

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/*
 * 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.keystone.v1_1.handlers;

import static org.jclouds.http.HttpUtils.closeClientButKeepContentStream;
import static org.jclouds.http.HttpUtils.releasePayload;

import javax.annotation.Resource;

import org.jclouds.domain.Credentials;
import org.jclouds.http.HttpCommand;
import org.jclouds.http.HttpResponse;
import org.jclouds.http.HttpRetryHandler;
import org.jclouds.logging.Logger;
import org.jclouds.openstack.keystone.v1_1.domain.Auth;
import org.jclouds.openstack.reference.AuthHeaders;

import com.google.common.cache.LoadingCache;
import com.google.common.collect.Multimap;
import com.google.inject.Inject;
import com.google.inject.Singleton;

/**
 * This will parse and set an appropriate exception on the command object.
 * 
 * @author Adrian Cole
 * 
 */
@Singleton
public class RetryOnRenew implements HttpRetryHandler {
    @Resource
    protected Logger logger = Logger.NULL;

    private final LoadingCache<Credentials, Auth> authenticationResponseCache;

    @Inject
    protected RetryOnRenew(LoadingCache<Credentials, Auth> authenticationResponseCache) {
        this.authenticationResponseCache = authenticationResponseCache;
    }

    @Override
    public boolean shouldRetryRequest(HttpCommand command, HttpResponse response) {
        boolean retry = false; // default
        try {
            switch (response.getStatusCode()) {
            case 401:
                // Do not retry on 401 from authentication request
                Multimap<String, String> headers = command.getCurrentRequest().getHeaders();
                if (headers != null && headers.containsKey(AuthHeaders.AUTH_USER)
                        && headers.containsKey(AuthHeaders.AUTH_KEY)
                        && !headers.containsKey(AuthHeaders.AUTH_TOKEN)) {
                    retry = false;
                } else {
                    byte[] content = closeClientButKeepContentStream(response);
                    if (content != null && new String(content).contains("lease renew")) {
                        logger.debug("invalidating authentication token");
                        authenticationResponseCache.invalidateAll();
                        retry = true;
                    } else {
                        retry = false;
                    }
                }
                break;
            }
            return retry;

        } finally {
            releasePayload(response);
        }
    }

}