Examples with ObjectMetadata com.qcloud.cos.model.ObjectMetadata used on opensource projects

Example 31 with ObjectMetadata

use of com.qcloud.cos.model.ObjectMetadata in project cos-java-sdk-v5 by tencentyun.

the class COSCryptoModuleBase method createInstructionPutRequest.

protected final PutObjectRequest createInstructionPutRequest(String bucketName, String key, ContentCryptoMaterial cekMaterial) {
    byte[] bytes = cekMaterial.toJsonString().getBytes(UTF8);
    InputStream is = new ByteArrayInputStream(bytes);
    ObjectMetadata metadata = new ObjectMetadata();
    metadata.setContentLength(bytes.length);
    metadata.addUserMetadata(Headers.CRYPTO_INSTRUCTION_FILE, "");
    InstructionFileId ifileId = new COSObjectId(bucketName, key).instructionFileId();
    return new PutObjectRequest(ifileId.getBucket(), ifileId.getKey(), is, metadata);
}

Example 32 with ObjectMetadata

use of com.qcloud.cos.model.ObjectMetadata in project cos-java-sdk-v5 by tencentyun.

the class COSCryptoModuleBase method initiateMultipartUploadSecurely.

@Override
public InitiateMultipartUploadResult initiateMultipartUploadSecurely(InitiateMultipartUploadRequest req) {
    // Generate a one-time use symmetric key and initialize a cipher to
    // encrypt object data
    ContentCryptoMaterial cekMaterial = createContentCryptoMaterial(req);
    if (cryptoConfig.getStorageMode() == ObjectMetadata) {
        ObjectMetadata metadata = req.getObjectMetadata();
        if (metadata == null)
            metadata = new ObjectMetadata();
        long dataSize = req.getDataSize();
        long partSize = req.getPartSize();
        if (dataSize < 0 || partSize < 0) {
            throw new CosClientException("initiate multipart upload with encryption client must set dataSize and partSize");
        }
        if (partSize % 16 != 0) {
            throw new CosClientException("initiat multipart uplaod with encryption client must set part size a mutiple of 16" + "but got " + partSize);
        }
        metadata.addUserMetadata(Headers.ENCRYPTION_DATA_SIZE, Long.toString(dataSize));
        metadata.addUserMetadata(Headers.ENCRYPTION_PART_SIZE, Long.toString(partSize));
        // Store encryption info in metadata
        req.setObjectMetadata(updateMetadataWithContentCryptoMaterial(metadata, null, cekMaterial));
    }
    InitiateMultipartUploadResult result = cos.initiateMultipartUpload(req);
    MultipartUploadCryptoContext uploadContext = newUploadContext(req, cekMaterial);
    if (req instanceof MaterialsDescriptionProvider) {
        MaterialsDescriptionProvider p = (MaterialsDescriptionProvider) req;
        uploadContext.setMaterialsDescription(p.getMaterialsDescription());
    }
    multipartUploadContexts.put(result.getUploadId(), uploadContext);
    return result;
}

Example 33 with ObjectMetadata

use of com.qcloud.cos.model.ObjectMetadata in project cos-java-sdk-v5 by tencentyun.

the class COSObjectWrapper method hasEncryptionInfo.

/**
 * Returns true if this COS object has the encryption information stored as user meta data; false
 * otherwise.
 */
final boolean hasEncryptionInfo() {
    ObjectMetadata metadata = cosobj.getObjectMetadata();
    Map<String, String> userMeta = metadata.getUserMetadata();
    return userMeta != null && (userMeta.containsKey(Headers.CRYPTO_IV) || userMeta.containsKey(Headers.ENCRYPTION_START)) && (userMeta.containsKey(Headers.CRYPTO_KEY_V2) || userMeta.containsKey(Headers.CRYPTO_KEY)) || userMeta.containsKey(Headers.ENCRYPTION_KEY);
}

Example 34 with ObjectMetadata

use of com.qcloud.cos.model.ObjectMetadata in project cos-java-sdk-v5 by tencentyun.

the class COSObjectWrapper method encryptionSchemeOf.

/**
 * Returns the original crypto scheme used for encryption, which may differ from the crypto
 * scheme used for decryption during, for example, a range-get operation.
 *
 * @param instructionFile the instruction file of the cos object; or null if there is none.
 */
ContentCryptoScheme encryptionSchemeOf(Map<String, String> instructionFile) {
    if (instructionFile != null) {
        String cekAlgo = instructionFile.get(Headers.CRYPTO_CEK_ALGORITHM);
        return ContentCryptoScheme.fromCEKAlgo(cekAlgo);
    }
    ObjectMetadata meta = cosobj.getObjectMetadata();
    Map<String, String> userMeta = meta.getUserMetadata();
    String cekAlgo = userMeta.get(Headers.CRYPTO_CEK_ALGORITHM);
    return ContentCryptoScheme.fromCEKAlgo(cekAlgo);
}

Example 35 with ObjectMetadata

use of com.qcloud.cos.model.ObjectMetadata in project cos-java-sdk-v5 by tencentyun.

the class COSCryptoModuleBase method updateInstructionPutRequest.

/**
 * Updates put request to store the specified instruction object in COS.
 *
 * @param req The put-instruction-file request for the instruction file to be stored in COS.
 * @param cekMaterial The instruction object to be stored in COS.
 * @return A put request to store the specified instruction object in COS.
 */
protected final PutObjectRequest updateInstructionPutRequest(PutObjectRequest req, ContentCryptoMaterial cekMaterial) {
    byte[] bytes = cekMaterial.toJsonString().getBytes(UTF8);
    ObjectMetadata metadata = req.getMetadata();
    if (metadata == null) {
        metadata = new ObjectMetadata();
        req.setMetadata(metadata);
    }
    // Set the content-length of the upload
    metadata.setContentLength(bytes.length);
    // Set the crypto instruction file header
    metadata.addUserMetadata(Headers.CRYPTO_INSTRUCTION_FILE, "");
    // Update the instruction request
    req.setMetadata(metadata);
    req.setInputStream(new ByteArrayInputStream(bytes));
    // routine
    return req;
}