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

Introduction

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

Prototype

String ETAG

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Document

The HTTP ETag header field name.

Usage

From source file:org.sonatype.nexus.repository.proxy.ProxyFacetSupport.java

/**
 * Extract ETag from response if possible, or {@code null}.
 *///from ww  w .j a  v  a 2s .  c  o m
@Nullable
private String extractETag(final HttpResponse response) {
    final Header etagHeader = response.getLastHeader(HttpHeaders.ETAG);
    if (etagHeader != null) {
        final String etag = etagHeader.getValue();
        if (!Strings.isNullOrEmpty(etag)) {
            if (etag.startsWith("\"") && etag.endsWith("\"")) {
                return etag.substring(1, etag.length() - 1);
            } else {
                return etag;
            }
        }
    }
    return null;
}

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From source file:org.gaul.s3proxy.S3ProxyHandler.java

private void handlePutBlob(HttpServletRequest request, HttpServletResponse response, BlobStore blobStore,
        String containerName, String blobName) throws IOException, S3Exception {
    // Flag headers present since HttpServletResponse.getHeader returns
    // null for empty headers values.
    String contentLengthString = null;
    String contentMD5String = null;
    for (String headerName : Collections.list(request.getHeaderNames())) {
        String headerValue = Strings.nullToEmpty(request.getHeader(headerName));
        if (headerName.equalsIgnoreCase(HttpHeaders.CONTENT_LENGTH)) {
            contentLengthString = headerValue;
        } else if (headerName.equalsIgnoreCase(HttpHeaders.CONTENT_MD5)) {
            contentMD5String = headerValue;
        }/*  www .  j  av  a 2  s . co m*/
    }

    HashCode contentMD5 = null;
    if (contentMD5String != null) {
        try {
            contentMD5 = HashCode.fromBytes(BaseEncoding.base64().decode(contentMD5String));
        } catch (IllegalArgumentException iae) {
            throw new S3Exception(S3ErrorCode.INVALID_DIGEST, iae);
        }
        if (contentMD5.bits() != Hashing.md5().bits()) {
            throw new S3Exception(S3ErrorCode.INVALID_DIGEST);
        }
    }

    if (contentLengthString == null) {
        throw new S3Exception(S3ErrorCode.MISSING_CONTENT_LENGTH);
    }
    long contentLength;
    try {
        contentLength = Long.parseLong(contentLengthString);
    } catch (NumberFormatException nfe) {
        throw new S3Exception(S3ErrorCode.INVALID_ARGUMENT, nfe);
    }
    if (contentLength < 0) {
        throw new S3Exception(S3ErrorCode.INVALID_ARGUMENT);
    }

    try (InputStream is = request.getInputStream()) {
        BlobBuilder.PayloadBlobBuilder builder = blobStore.blobBuilder(blobName).payload(is)
                .contentLength(request.getContentLength());
        addContentMetdataFromHttpRequest(builder, request);
        if (contentMD5 != null) {
            builder = builder.contentMD5(contentMD5);
        }

        PutOptions options = new PutOptions();
        String blobStoreType = getBlobStoreType(blobStore);
        if (blobStoreType.equals("azureblob") && contentLength > 64 * 1024 * 1024) {
            options.multipart(true);
        }
        String eTag;
        try {
            eTag = blobStore.putBlob(containerName, builder.build(), options);
        } catch (HttpResponseException hre) {
            HttpResponse hr = hre.getResponse();
            if (hr == null) {
                return;
            }
            int status = hr.getStatusCode();
            switch (status) {
            case HttpServletResponse.SC_BAD_REQUEST:
            case 422: // Swift returns 422 Unprocessable Entity
                throw new S3Exception(S3ErrorCode.BAD_DIGEST);
            default:
                // TODO: emit hre.getContent() ?
                response.sendError(status);
                break;
            }
            return;
        } catch (RuntimeException re) {
            if (Throwables2.getFirstThrowableOfType(re, TimeoutException.class) != null) {
                throw new S3Exception(S3ErrorCode.REQUEST_TIMEOUT, re);
            } else {
                throw re;
            }
        }

        // S3 quotes ETag while Swift does not
        if (!eTag.startsWith("\"") && !eTag.endsWith("\"")) {
            eTag = '"' + eTag + '"';
        }
        response.addHeader(HttpHeaders.ETAG, eTag);
    }

    // TODO: jclouds should include this in PutOptions
    String cannedAcl = request.getHeader("x-amz-acl");
    if (cannedAcl != null && !cannedAcl.equalsIgnoreCase("private")) {
        handleSetBlobAcl(request, response, blobStore, containerName, blobName);
    }
}

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From source file:org.gaul.s3proxy.S3ProxyHandler.java

private static void addMetadataToResponse(HttpServletResponse response, BlobMetadata metadata) {
    ContentMetadata contentMetadata = metadata.getContentMetadata();
    response.addHeader(HttpHeaders.CONTENT_DISPOSITION, contentMetadata.getContentDisposition());
    response.addHeader(HttpHeaders.CONTENT_ENCODING, contentMetadata.getContentEncoding());
    response.addHeader(HttpHeaders.CONTENT_LANGUAGE, contentMetadata.getContentLanguage());
    response.addHeader(HttpHeaders.CONTENT_LENGTH, contentMetadata.getContentLength().toString());
    response.setContentType(contentMetadata.getContentType());
    HashCode contentMd5 = contentMetadata.getContentMD5AsHashCode();
    if (contentMd5 != null) {
        byte[] contentMd5Bytes = contentMd5.asBytes();
        response.addHeader(HttpHeaders.CONTENT_MD5, BaseEncoding.base64().encode(contentMd5Bytes));
        response.addHeader(HttpHeaders.ETAG,
                "\"" + BaseEncoding.base16().lowerCase().encode(contentMd5Bytes) + "\"");
    }/*from w ww.j ava2s .  c o  m*/
    Date expires = contentMetadata.getExpires();
    if (expires != null) {
        response.addDateHeader(HttpHeaders.EXPIRES, expires.getTime());
    }
    response.addDateHeader(HttpHeaders.LAST_MODIFIED, metadata.getLastModified().getTime());
    for (Map.Entry<String, String> entry : metadata.getUserMetadata().entrySet()) {
        response.addHeader(USER_METADATA_PREFIX + entry.getKey(), entry.getValue());
    }
}

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From source file:org.gaul.s3proxy.S3ProxyHandler.java

private void handleUploadPart(HttpServletRequest request, HttpServletResponse response, BlobStore blobStore,
        String containerName, String blobName, String uploadId) throws IOException, S3Exception {
    // TODO: duplicated from handlePutBlob
    String contentLengthString = null;
    String contentMD5String = null;
    for (String headerName : Collections.list(request.getHeaderNames())) {
        String headerValue = Strings.nullToEmpty(request.getHeader(headerName));
        if (headerName.equalsIgnoreCase(HttpHeaders.CONTENT_LENGTH)) {
            contentLengthString = headerValue;
        } else if (headerName.equalsIgnoreCase(HttpHeaders.CONTENT_MD5)) {
            contentMD5String = headerValue;
        }//from  ww  w .java 2s .com
    }

    HashCode contentMD5 = null;
    if (contentMD5String != null) {
        try {
            contentMD5 = HashCode.fromBytes(BaseEncoding.base64().decode(contentMD5String));
        } catch (IllegalArgumentException iae) {
            throw new S3Exception(S3ErrorCode.INVALID_DIGEST, iae);
        }
        if (contentMD5.bits() != Hashing.md5().bits()) {
            throw new S3Exception(S3ErrorCode.INVALID_DIGEST);
        }
    }

    if (contentLengthString == null) {
        throw new S3Exception(S3ErrorCode.MISSING_CONTENT_LENGTH);
    }
    long contentLength;
    try {
        contentLength = Long.parseLong(contentLengthString);
    } catch (NumberFormatException nfe) {
        throw new S3Exception(S3ErrorCode.INVALID_ARGUMENT, nfe);
    }
    if (contentLength < 0) {
        throw new S3Exception(S3ErrorCode.INVALID_ARGUMENT);
    }

    String partNumberString = request.getParameter("partNumber");
    if (partNumberString == null) {
        throw new S3Exception(S3ErrorCode.INVALID_ARGUMENT);
    }
    int partNumber;
    try {
        partNumber = Integer.parseInt(partNumberString);
    } catch (NumberFormatException nfe) {
        throw new S3Exception(S3ErrorCode.INVALID_ARGUMENT,
                "Part number must be an integer between 1 and 10000" + ", inclusive", nfe,
                ImmutableMap.of("ArgumentName", "partNumber", "ArgumentValue", partNumberString));
    }
    if (partNumber < 1 || partNumber > 10_000) {
        throw new S3Exception(S3ErrorCode.INVALID_ARGUMENT,
                "Part number must be an integer between 1 and 10000" + ", inclusive", (Throwable) null,
                ImmutableMap.of("ArgumentName", "partNumber", "ArgumentValue", partNumberString));
    }

    // TODO: how to reconstruct original mpu?
    MultipartUpload mpu = MultipartUpload.create(containerName, blobName, uploadId,
            createFakeBlobMetadata(blobStore));

    try (InputStream is = request.getInputStream()) {
        Payload payload = Payloads.newInputStreamPayload(is);
        payload.getContentMetadata().setContentLength(contentLength);
        if (contentMD5 != null) {
            payload.getContentMetadata().setContentMD5(contentMD5);
        }

        MultipartPart part = blobStore.uploadMultipartPart(mpu, partNumber, payload);
        response.addHeader(HttpHeaders.ETAG, "\"" + part.partETag() + "\"");
    }
}

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