Example usage for org.springframework.web.servlet.resource ResourceHttpRequestHandler handleRequest

Introduction

In this page you can find the example usage for org.springframework.web.servlet.resource ResourceHttpRequestHandler handleRequest.

Prototype

@Override
public void handleRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException 

Source Link

Document

Processes a resource request.

Usage

From source file:com.netflix.genie.web.services.impl.JobDirectoryServerServiceImpl.java

private void handleRequest(final URI baseUri, final String relativePath, final HttpServletRequest request,
        final HttpServletResponse response, final JobDirectoryManifest manifest, final URI jobDirectoryRoot)
        throws IOException, ServletException {
    log.debug("Handle request, baseUri: '{}', relpath: '{}', jobRootUri: '{}'", baseUri, relativePath,
            jobDirectoryRoot);//  w w  w . j  a  v a  2  s. c  o m
    final JobDirectoryManifest.ManifestEntry entry;
    final Optional<JobDirectoryManifest.ManifestEntry> entryOptional = manifest.getEntry(relativePath);
    if (entryOptional.isPresent()) {
        entry = entryOptional.get();
    } else {
        log.error("No such entry in job manifest: {}", relativePath);
        response.sendError(HttpStatus.NOT_FOUND.value(), "Not found: " + relativePath);
        return;
    }

    if (entry.isDirectory()) {
        // For now maintain the V3 structure
        // TODO: Once we determine what we want for V4 use v3/v4 flags or some way to differentiate
        // TODO: there's no unit test covering this section
        final DefaultDirectoryWriter.Directory directory = new DefaultDirectoryWriter.Directory();
        final List<DefaultDirectoryWriter.Entry> files = Lists.newArrayList();
        final List<DefaultDirectoryWriter.Entry> directories = Lists.newArrayList();
        try {
            entry.getParent().ifPresent(parentPath -> {
                final JobDirectoryManifest.ManifestEntry parentEntry = manifest.getEntry(parentPath)
                        .orElseThrow(IllegalArgumentException::new);
                directory.setParent(createEntry(parentEntry, baseUri));
            });

            for (final String childPath : entry.getChildren()) {
                final JobDirectoryManifest.ManifestEntry childEntry = manifest.getEntry(childPath)
                        .orElseThrow(IllegalArgumentException::new);

                if (childEntry.isDirectory()) {
                    directories.add(this.createEntry(childEntry, baseUri));
                } else {
                    files.add(this.createEntry(childEntry, baseUri));
                }
            }
        } catch (final IllegalArgumentException iae) {
            log.error("Encountered unexpected problem traversing the manifest for directory entry {}", entry,
                    iae);
            response.sendError(HttpStatus.INTERNAL_SERVER_ERROR.value());
            return;
        }

        directories.sort(Comparator.comparing(DefaultDirectoryWriter.Entry::getName));
        files.sort(Comparator.comparing(DefaultDirectoryWriter.Entry::getName));

        directory.setDirectories(directories);
        directory.setFiles(files);

        final String accept = request.getHeader(HttpHeaders.ACCEPT);
        if (accept != null && accept.contains(MediaType.TEXT_HTML_VALUE)) {
            response.setContentType(MediaType.TEXT_HTML_VALUE);
            response.getOutputStream().write(DefaultDirectoryWriter.directoryToHTML(entry.getName(), directory)
                    .getBytes(StandardCharsets.UTF_8));
        } else {
            response.setContentType(MediaType.APPLICATION_JSON_VALUE);
            GenieObjectMapper.getMapper().writeValue(response.getOutputStream(), directory);
        }
    } else {
        final URI location = jobDirectoryRoot.resolve(entry.getPath());
        log.debug("Get resource: {}", location);
        final Resource jobResource = this.resourceLoader.getResource(location.toString());
        // Every file really should have a media type but if not use text/plain
        final String mediaType = entry.getMimeType().orElse(MediaType.TEXT_PLAIN_VALUE);
        final ResourceHttpRequestHandler handler = this.genieResourceHandlerFactory.get(mediaType, jobResource);
        handler.handleRequest(request, response);
    }
}

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