Examples with BytestreamCache org.apache.tapestry5.internal.services.assets.BytestreamCache used on opensource projects

Example 1 with BytestreamCache

use of org.apache.tapestry5.internal.services.assets.BytestreamCache in project tapestry-5 by apache.

the class LessResourceTransformer method invokeLessCompiler.

private BytestreamCache invokeLessCompiler(Resource source, ResourceDependencies dependencies) throws IOException {
    try {
        LessSource lessSource = new ResourceLessSource(source, dependencies);
        LessCompiler.CompilationResult compilationResult = compile(compiler, lessSource);
        return new BytestreamCache(compilationResult.getCss().getBytes("utf-8"));
    } catch (Less4jException ex) {
        throw new IOException(ex);
    } catch (UnsupportedEncodingException ex) {
        throw new IOException(ex);
    }
}

Example 2 with BytestreamCache

use of org.apache.tapestry5.internal.services.assets.BytestreamCache in project tapestry-5 by apache.

the class StreamableResourceSourceImpl method getStreamableResource.

public StreamableResource getStreamableResource(Resource baseResource, StreamableResourceProcessing processing, ResourceDependencies dependencies) throws IOException {
    assert baseResource != null;
    if (!baseResource.exists()) {
        throw new IOException(String.format("Resource %s does not exist.", baseResource));
    }
    String fileSuffix = TapestryInternalUtils.toFileSuffix(baseResource.getFile());
    // Optionally, transform the resource. The main driver for this is to allow
    // for libraries like LessJS (http://lesscss.org/) or
    // http://jashkenas.github.com/coffee-script/
    ResourceTransformer rt = configuration.get(fileSuffix);
    InputStream transformed = rt == null ? baseResource.openStream() : rt.transform(baseResource, dependencies);
    assert transformed != null;
    BytestreamCache bytestreamCache = readStream(transformed);
    transformed.close();
    ContentType contentType = rt == null ? new ContentType(contentTypeAnalyzer.getContentType(baseResource)) : rt.getTransformedContentType();
    boolean compressable = compressionAnalyzer.isCompressable(contentType.getMimeType());
    long lastModified = resourceChangeTracker.trackResource(baseResource);
    return new StreamableResourceImpl(baseResource.toString(), contentType, compressable ? CompressionStatus.COMPRESSABLE : CompressionStatus.NOT_COMPRESSABLE, lastModified, bytestreamCache, checksumGenerator, null);
}

Example 3 with BytestreamCache

use of org.apache.tapestry5.internal.services.assets.BytestreamCache in project tapestry-5 by apache.

the class ResourceTransformerFactoryImpl method wrapWithFileSystemCaching.

private ResourceTransformer wrapWithFileSystemCaching(ResourceTransformer core, final String targetName) {
    return new DelegatingResourceTransformer(core) {

        @Override
        public InputStream transform(Resource source, ResourceDependencies dependencies) throws IOException {
            long checksum = ResourceTransformUtils.toChecksum(source);
            String fileName = Long.toHexString(checksum) + "-" + source.getFile();
            File cacheFile = new File(cacheDir, fileName);
            if (cacheFile.exists()) {
                logger.debug(String.format("Serving up compiled %s content for %s from file system cache", targetName, source));
                return new BufferedInputStream(new FileInputStream(cacheFile));
            }
            InputStream compiled = delegate.transform(source, dependencies);
            // We need the InputStream twice; once to return, and once to write out to the cache file for later.
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            TapestryInternalUtils.copy(compiled, bos);
            compiled.close();
            BytestreamCache cache = new BytestreamCache(bos);
            writeToCacheFile(cacheFile, cache.openStream());
            return cache.openStream();
        }
    };
}

Example 4 with BytestreamCache

use of org.apache.tapestry5.internal.services.assets.BytestreamCache in project tapestry-5 by apache.

the class AbstractMinimizer method minimize.

@Override
public StreamableResource minimize(final StreamableResource input) throws IOException {
    if (!isEnabled(input)) {
        return input;
    }
    long startNanos = System.nanoTime();
    final ByteArrayOutputStream bos = new ByteArrayOutputStream(1000);
    tracker.perform("Minimizing " + input, new IOOperation<Void>() {

        @Override
        public Void perform() throws IOException {
            InputStream in = doMinimize(input);
            TapestryInternalUtils.copy(in, bos);
            in.close();
            return null;
        }
    });
    // The content is minimized, but can still be (GZip) compressed.
    StreamableResource output = new StreamableResourceImpl("minimized " + input.getDescription(), input.getContentType(), CompressionStatus.COMPRESSABLE, input.getLastModified(), new BytestreamCache(bos), checksumGenerator, input.getResponseCustomizer());
    if (logger.isInfoEnabled()) {
        long elapsedNanos = System.nanoTime() - startNanos;
        int inputSize = input.getSize();
        int outputSize = output.getSize();
        double elapsedMillis = ((double) elapsedNanos) * NANOS_TO_MILLIS;
        // e.g., reducing 100 bytes to 25 would be a (100-25)/100 reduction, or 75%
        double reduction = 100d * ((double) (inputSize - outputSize)) / ((double) inputSize);
        logger.info(String.format("Minimized %s (%,d input bytes of %s to %,d output bytes in %.2f ms, %.2f%% reduction)", input.getDescription(), inputSize, resourceType, outputSize, elapsedMillis, reduction));
    }
    return output;
}