Example usage for com.google.common.net HttpHeaders IF_MODIFIED

Introduction

In this page you can find the example usage for com.google.common.net HttpHeaders IF_MODIFIED_SINCE.

Prototype

String IF_MODIFIED_SINCE

To view the source code for com.google.common.net HttpHeaders IF_MODIFIED_SINCE.

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Document

The HTTP If-Modified-Since header field name.

Usage

From source file:org.jclouds.openstack.swift.v1.options.CopyOptions.java

public CopyOptions ifModifiedSince(Date ifModifiedSince) {
    this.headers.put(HttpHeaders.IF_MODIFIED_SINCE, dateService.rfc822DateFormat(ifModifiedSince));
    return this;
}

From source file:com.cnksi.core.web.utils.Servlets.java

/**
 * ??If-Modified-Since Header, ?./*from   w ww  .  j ava  2  s . c  om*/
 * 
 * , checkIfModifyfalse ,304 not modify status.
 * 
 * @param lastModified ?.
 */
public static boolean checkIfModifiedSince(HttpServletRequest request, HttpServletResponse response,
        long lastModified) {

    long ifModifiedSince = request.getDateHeader(HttpHeaders.IF_MODIFIED_SINCE);
    if ((ifModifiedSince != -1) && (lastModified < ifModifiedSince + 1000)) {
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return false;
    }
    return true;
}

From source file:cn.martin.sys.utils.Servlets.java

/**
 * ??If-Modified-Since Header, ?./*from   www  . j  av  a2  s .c  om*/
 * 
 * , checkIfModifyfalse ,304 not modify status.
 * 
 * @param lastModified ?.
 */
public static boolean checkIfModifiedSince(HttpServletRequest request, HttpServletResponse response,
        long lastModified) {
    long ifModifiedSince = request.getDateHeader(HttpHeaders.IF_MODIFIED_SINCE);
    if ((ifModifiedSince != -1) && (lastModified < (ifModifiedSince + 1000))) {
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return false;
    }
    return true;
}

From source file:com.google.gerrit.httpd.plugins.SmallResource.java

@Override
void send(HttpServletRequest req, HttpServletResponse res) throws IOException {
    if (0 < lastModified) {
        long ifModifiedSince = req.getDateHeader(HttpHeaders.IF_MODIFIED_SINCE);
        if (ifModifiedSince > 0 && ifModifiedSince == lastModified) {
            res.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
            return;
        } else {/*from  w  ww. j  a  va2 s .c  o m*/
            res.setDateHeader("Last-Modified", lastModified);
        }
    }
    res.setContentType(contentType);
    if (characterEncoding != null) {
        res.setCharacterEncoding(characterEncoding);
    }
    res.setContentLength(data.length);
    res.getOutputStream().write(data);
}

From source file:com.google.gerrit.httpd.resources.SmallResource.java

@Override
public void send(HttpServletRequest req, HttpServletResponse res) throws IOException {
    if (0 < lastModified) {
        long ifModifiedSince = req.getDateHeader(HttpHeaders.IF_MODIFIED_SINCE);
        if (ifModifiedSince > 0 && ifModifiedSince == lastModified) {
            res.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
            return;
        }/*from  ww w  . j  ava  2s. c  o  m*/
        res.setDateHeader("Last-Modified", lastModified);
    }
    res.setContentType(contentType);
    if (characterEncoding != null) {
        res.setCharacterEncoding(characterEncoding);
    }
    res.setContentLength(data.length);
    res.getOutputStream().write(data);
}

From source file:com.trc.core2.web.Servlets.java

/**
 * ??If-Modified-Since Header, ?./*from ww w .  j av a  2 s. c o  m*/
 * 
 * , checkIfModifyfalse ,304 not modify status.
 * 
 * @param lastModified ?.
 */
public static boolean checkIfModifiedSince(HttpServletRequest request, HttpServletResponse response,
        long lastModified) {
    long ifModifiedSince = request.getDateHeader(HttpHeaders.IF_MODIFIED_SINCE);
    if ((ifModifiedSince != -1) && (lastModified < ifModifiedSince + 1000)) {
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return false;
    }
    return true;
}

From source file:org.haiku.haikudepotserver.pkg.controller.PkgController.java

/**
 * <p>This streams back a redirect to report data that contains a JSON stream gzip-compressed
 * that describes all of the packages for a repository source.  This is used by clients to get
 * deep(ish) data on all pkgs without having to query each one.</p>
 *
 * <p>The primary client for this is the Haiku desktop application &quot;Haiku Depot&quot;.
 * This API deprecates and older JSON-RPC API for obtaining bulk data.</p>
 *//*from ww w . ja  v  a  2  s  . co  m*/

// TODO; observe the natural language code

@RequestMapping(value = "/all-{repositorySourceCode}-{naturalLanguageCode}.json.gz", method = RequestMethod.GET)
public void getAllAsJson(HttpServletResponse response,
        @PathVariable(value = KEY_NATURALLANGUAGECODE) String naturalLanguageCode,
        @PathVariable(value = KEY_REPOSITORYSOURCECODE) String repositorySourceCode,
        @RequestHeader(value = HttpHeaders.IF_MODIFIED_SINCE, required = false) String ifModifiedSinceHeader)
        throws IOException {

    ObjectContext objectContext = serverRuntime.newContext();

    Optional<RepositorySource> repositorySourceOptional = RepositorySource.tryGetByCode(objectContext,
            repositorySourceCode);

    if (!repositorySourceOptional.isPresent()) {
        LOGGER.info("repository source [" + repositorySourceCode + "] not found");
        response.setStatus(HttpStatus.NOT_FOUND.value());
    } else {
        Date lastModifiedTimestamp = pkgService.getLastModifyTimestampSecondAccuracy(objectContext,
                repositorySourceOptional.get());
        PkgDumpExportJobSpecification specification = new PkgDumpExportJobSpecification();
        specification.setNaturalLanguageCode(naturalLanguageCode);
        specification.setRepositorySourceCode(repositorySourceCode);

        JobController.handleRedirectToJobData(response, jobService, ifModifiedSinceHeader,
                lastModifiedTimestamp, specification);
    }
}

From source file:org.ardverk.dropwizard.assets.AssetsDirectoryServlet.java

/**
 * Returns {@code true} if the client has an up-to-date version of the asset.
 *///from  w w  w . j  a  v a 2 s  .  c o  m
private static boolean isCurrent(HttpServletRequest request, AssetsDirectory.Entry entry) {
    String etag = entry.getETag();
    long lastModified = entry.getLastModified();

    return etag.equals(request.getHeader(HttpHeaders.IF_NONE_MATCH))
            || (request.getDateHeader(HttpHeaders.IF_MODIFIED_SINCE) >= lastModified);
}

From source file:org.haiku.haikudepotserver.repository.controller.RepositoryController.java

/**
 * <p>This streams back a redirect to report data that contains a JSON stream gzip-compressed
 * that describes all of the repositories.  This is used by clients to get deep(ish) data on all
 * repositories without having to query each one.</p>
 *///from  w w w  .  ja v  a  2  s  . com

// TODO; observe the natural language code

@RequestMapping(value = { "/all_{naturalLanguageCode}.json.gz", // deprecated
        "/all-{naturalLanguageCode}.json.gz" }, method = RequestMethod.GET)
public void getAllAsJson(HttpServletResponse response,
        @PathVariable(value = KEY_NATURALLANGUAGECODE) String naturalLanguageCode,
        @RequestHeader(value = HttpHeaders.IF_MODIFIED_SINCE, required = false) String ifModifiedSinceHeader)
        throws IOException {

    JobController.handleRedirectToJobData(response, jobService, ifModifiedSinceHeader,
            repositoryService.getLastRepositoryModifyTimestampSecondAccuracy(serverRuntime.newContext()),
            new RepositoryDumpExportJobSpecification());
}

From source file:org.haiku.haikudepotserver.job.controller.JobController.java

/**
 * <p>This is helper-code that can be used to check to see if the data is stale and
 * will then enqueue the job, run it and then redirect the user to the data
 * download.</p>/*www . ja  va2s.c om*/
 * @param response is the HTTP response to send the redirect to.
 * @param ifModifiedSinceHeader is the inbound header from the client.
 * @param lastModifyTimestamp is the actual last modified date for the data.
 * @param jobSpecification is the job that would be run if the data is newer than in the
 *                         inbound header.
 */

public static void handleRedirectToJobData(HttpServletResponse response, JobService jobService,
        String ifModifiedSinceHeader, Date lastModifyTimestamp, JobSpecification jobSpecification)
        throws IOException {

    if (!Strings.isNullOrEmpty(ifModifiedSinceHeader)) {
        try {
            Date requestModifyTimestamp = new Date(Instant
                    .from(DateTimeFormatter.RFC_1123_DATE_TIME.parse(ifModifiedSinceHeader)).toEpochMilli());

            if (requestModifyTimestamp.getTime() >= lastModifyTimestamp.getTime()) {
                response.setStatus(HttpStatus.NOT_MODIFIED.value());
                return;
            }
        } catch (DateTimeParseException dtpe) {
            LOGGER.warn("bad [{}] header on request; [{}] -- will ignore", HttpHeaders.IF_MODIFIED_SINCE,
                    StringUtils.abbreviate(ifModifiedSinceHeader, 128));
        }
    }

    // what happens here is that we get the report and if it is too old, delete it and try again.

    JobSnapshot jobSnapshot = getJobSnapshotStartedAfter(jobService, lastModifyTimestamp, jobSpecification);
    Set<String> jobDataGuids = jobSnapshot.getDataGuids();

    if (1 != jobDataGuids.size()) {
        throw new IllegalStateException("found [" + jobDataGuids.size()
                + "] job data guids related to the job [" + jobSnapshot.getGuid() + "] - was expecting 1");
    }

    String lastModifiedValue = DateTimeFormatter.RFC_1123_DATE_TIME
            .format(ZonedDateTime.ofInstant(lastModifyTimestamp.toInstant(), ZoneOffset.UTC));
    String destinationLocationUrl = UriComponentsBuilder.newInstance()
            .pathSegment(AuthenticationFilter.SEGMENT_SECURED).pathSegment(JobController.SEGMENT_JOBDATA)
            .pathSegment(jobDataGuids.iterator().next()).pathSegment(JobController.SEGMENT_DOWNLOAD)
            .toUriString();

    response.addHeader(HttpHeaders.LAST_MODIFIED, lastModifiedValue);
    response.sendRedirect(destinationLocationUrl);
}

Example usage for com.google.common.net HttpHeaders IF_MODIFIED_SINCE

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