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A bundle project producing JAX-RS RI bundles. The primary artifact is an "all-in-one" OSGi-fied JAX-RS RI bundle (jaxrs-ri.jar). Attached to that are two compressed JAX-RS RI archives. The first archive (jaxrs-ri.zip) consists of binary RI bits and contains the API jar (under "api" directory), RI libraries (under "lib" directory) as well as all external RI dependencies (under "ext" directory). The secondary archive (jaxrs-ri-src.zip) contains buildable JAX-RS RI source bundle and contains the API jar (under "api" directory), RI sources (under "src" directory) as well as all external RI dependencies (under "ext" directory). The second archive also contains "build.xml" ANT script that builds the RI sources. To build the JAX-RS RI simply unzip the archive, cd to the created jaxrs-ri directory and invoke "ant" from the command line.

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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2012-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
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 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
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 */
package javax.ws.rs;

import java.util.Date;

import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.RuntimeDelegate;
import static javax.ws.rs.core.HttpHeaders.RETRY_AFTER;
import static javax.ws.rs.core.Response.Status.SERVICE_UNAVAILABLE;

/**
 * A runtime exception indicating that the requested resource
 * {@link javax.ws.rs.core.Response.Status#SERVICE_UNAVAILABLE cannot be served}.
 *
 * @author Marek Potociar
 * @since 2.0
 */
public class ServiceUnavailableException extends ServerErrorException {

    private static final long serialVersionUID = 3821068205617492633L;

    /**
     * Construct a new "service unavailable" exception without any "Retry-After" information
     * specified for the failed request.
     */
    public ServiceUnavailableException() {
        super(Response.status(SERVICE_UNAVAILABLE).build());
    }

    /**
     * Construct a new "service unavailable" exception without any "Retry-After" information
     * specified for the failed request.
     *
     * @param message the detail message (which is saved for later retrieval
     *                by the {@link #getMessage()} method).
     */
    public ServiceUnavailableException(String message) {
        super(message, Response.status(SERVICE_UNAVAILABLE).build());
    }

    /**
     * Construct a new "service unavailable" exception with an interval specifying
     * the "Retry-After" information for the failed request.
     *
     * @param retryAfter decimal interval in seconds after which the failed request may be retried.
     */
    public ServiceUnavailableException(Long retryAfter) {
        super(Response.status(SERVICE_UNAVAILABLE).header(RETRY_AFTER, retryAfter).build());
    }

    /**
     * Construct a new "service unavailable" exception with an interval specifying
     * the "Retry-After" information for the failed request.
     *
     * @param message    the detail message (which is saved for later retrieval
     *                   by the {@link #getMessage()} method).
     * @param retryAfter decimal interval in seconds after which the failed request may be retried.
     */
    public ServiceUnavailableException(String message, Long retryAfter) {
        super(message, Response.status(SERVICE_UNAVAILABLE).header(RETRY_AFTER, retryAfter).build());
    }

    /**
     * Construct a new "service unavailable" exception with an interval specifying
     * the "Retry-After" information for the failed request.
     *
     * @param retryAfter a date/time after which the failed request may be retried.
     */
    public ServiceUnavailableException(Date retryAfter) {
        super(Response.status(SERVICE_UNAVAILABLE).header(RETRY_AFTER, retryAfter).build());
    }

    /**
     * Construct a new "service unavailable" exception with an interval specifying
     * the "Retry-After" information for the failed request.
     *
     * @param message    the detail message (which is saved for later retrieval
     *                   by the {@link #getMessage()} method).
     * @param retryAfter a date/time after which the failed request may be retried.
     */
    public ServiceUnavailableException(String message, Date retryAfter) {
        super(message, Response.status(SERVICE_UNAVAILABLE).header(RETRY_AFTER, retryAfter).build());
    }

    /**
     * Construct a new "service unavailable" exception.
     *
     * @param response error response.
     * @throws IllegalArgumentException in case the status code set in the response
     *                                  is not HTTP {@code 503}.
     */
    public ServiceUnavailableException(Response response) {
        super(validate(response, SERVICE_UNAVAILABLE));
    }

    /**
     * Construct a new "service unavailable" exception.
     *
     * @param message  the detail message (which is saved for later retrieval
     *                 by the {@link #getMessage()} method).
     * @param response error response.
     * @throws IllegalArgumentException in case the status code set in the response
     *                                  is not HTTP {@code 503}.
     */
    public ServiceUnavailableException(String message, Response response) {
        super(message, validate(response, SERVICE_UNAVAILABLE));
    }

    /**
     * Construct a new "service unavailable" exception with a date specifying
     * the "Retry-After" information for the failed request and an underlying
     * request failure cause.
     *
     * @param retryAfter a date/time after which the failed request may be retried.
     * @param cause      the underlying cause of the exception.
     */
    public ServiceUnavailableException(Date retryAfter, Throwable cause) {
        super(Response.status(SERVICE_UNAVAILABLE).header(RETRY_AFTER, retryAfter).build(), cause);
    }

    /**
     * Construct a new "service unavailable" exception with a date specifying
     * the "Retry-After" information for the failed request and an underlying
     * request failure cause.
     *
     * @param message    the detail message (which is saved for later retrieval
     *                   by the {@link #getMessage()} method).
     * @param retryAfter a date/time after which the failed request may be retried.
     * @param cause      the underlying cause of the exception.
     */
    public ServiceUnavailableException(String message, Date retryAfter, Throwable cause) {
        super(message, Response.status(SERVICE_UNAVAILABLE).header(RETRY_AFTER, retryAfter).build(), cause);
    }

    /**
     * Construct a new "service unavailable" exception with an interval specifying
     * the "Retry-After" information for the failed request and an underlying
     * request failure cause.
     *
     * @param retryAfter decimal interval in seconds after which the failed request may be retried.
     * @param cause      the underlying cause of the exception.
     */
    public ServiceUnavailableException(Long retryAfter, Throwable cause) {
        super(Response.status(SERVICE_UNAVAILABLE).header(RETRY_AFTER, retryAfter).build(), cause);
    }

    /**
     * Construct a new "service unavailable" exception with an interval specifying
     * the "Retry-After" information for the failed request and an underlying
     * request failure cause.
     *
     * @param message    the detail message (which is saved for later retrieval
     *                   by the {@link #getMessage()} method).
     * @param retryAfter decimal interval in seconds after which the failed request may be retried.
     * @param cause      the underlying cause of the exception.
     */
    public ServiceUnavailableException(String message, Long retryAfter, Throwable cause) {
        super(message, Response.status(SERVICE_UNAVAILABLE).header(RETRY_AFTER, retryAfter).build(), cause);
    }

    /**
     * Construct a new "service unavailable" exception.
     *
     * @param response error response.
     * @param cause    the underlying cause of the exception.
     * @throws IllegalArgumentException in case the status code set in the response
     *                                  is not HTTP {@code 503}.
     */
    public ServiceUnavailableException(Response response, Throwable cause) {
        super(validate(response, SERVICE_UNAVAILABLE), cause);
    }

    /**
     * Construct a new "service unavailable" exception.
     *
     * @param message  the detail message (which is saved for later retrieval
     *                 by the {@link #getMessage()} method).
     * @param response error response.
     * @param cause    the underlying cause of the exception.
     * @throws IllegalArgumentException in case the status code set in the response
     *                                  is not HTTP {@code 503}.
     */
    public ServiceUnavailableException(String message, Response response, Throwable cause) {
        super(message, validate(response, SERVICE_UNAVAILABLE), cause);
    }

    /**
     * Check if the underlying response contains the information on when is it
     * possible to {@link HttpHeaders#RETRY_AFTER retry the request}.
     *
     * @return {@code true} in case the retry time is specified in the underlying
     *         response, {@code false} otherwise.
     */
    public boolean hasRetryAfter() {
        return getResponse().getHeaders().containsKey(RETRY_AFTER);
    }

    /**
     * Get the retry time for the failed request.
     *
     * @param requestTime time of sending the original request that may be used to compute
     *                    the retry time (in case the retry time information specified as
     *                    a decimal interval in seconds).
     * @return time when the request may be retried or {@code null} if there is no retry
     *         information available.
     * @throws NullPointerException in case the {@code requestTime} parameter is {@code null}.
     */
    public Date getRetryTime(final Date requestTime) {
        final String value = getResponse().getHeaderString(RETRY_AFTER);
        if (value == null) {
            return null;
        }

        try {
            Long interval = Long.parseLong(value);
            return new Date(requestTime.getTime() + interval * 1000);
        } catch (NumberFormatException ex) {
            // not an decimal value; ignoring exception and parsing as date
        }

        final RuntimeDelegate.HeaderDelegate dateDelegate =
                RuntimeDelegate.getInstance().createHeaderDelegate(Date.class);
        return dateDelegate.fromString(value);
    }
}




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