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

Example 31 with GetObjectRequest

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

the class TransferManager method downloadDirectory.

/**
 * Downloads all objects in the virtual directory designated by the keyPrefix given to the
 * destination directory given. All virtual subdirectories will be downloaded recursively.
 *
 * @param bucketName The bucket containing the virtual directory
 * @param keyPrefix The key prefix for the virtual directory, or null for the entire bucket. All
 *        subdirectories will be downloaded recursively.
 * @param destinationDirectory The directory to place downloaded files. Subdirectories will be
 *        created as necessary.
 */
public MultipleFileDownload downloadDirectory(String bucketName, String keyPrefix, File destinationDirectory) {
    if (keyPrefix == null)
        keyPrefix = "";
    List<COSObjectSummary> objectSummaries = new LinkedList<COSObjectSummary>();
    Stack<String> commonPrefixes = new Stack<String>();
    commonPrefixes.add(keyPrefix);
    long totalSize = 0;
    // This is a depth-first search.
    do {
        String prefix = commonPrefixes.pop();
        ObjectListing listObjectsResponse = null;
        do {
            if (listObjectsResponse == null) {
                ListObjectsRequest listObjectsRequest = new ListObjectsRequest().withBucketName(bucketName).withDelimiter(DEFAULT_DELIMITER).withPrefix(prefix);
                listObjectsResponse = cos.listObjects(listObjectsRequest);
            } else {
                listObjectsResponse = cos.listNextBatchOfObjects(listObjectsResponse);
            }
            for (COSObjectSummary s : listObjectsResponse.getObjectSummaries()) {
                // name.
                if (!s.getKey().equals(prefix) && !listObjectsResponse.getCommonPrefixes().contains(s.getKey() + DEFAULT_DELIMITER)) {
                    objectSummaries.add(s);
                    totalSize += s.getSize();
                } else {
                    log.debug("Skipping download for object " + s.getKey() + " since it is also a virtual directory");
                }
            }
            commonPrefixes.addAll(listObjectsResponse.getCommonPrefixes());
        } while (listObjectsResponse.isTruncated());
    } while (!commonPrefixes.isEmpty());
    /* This is the hook for adding additional progress listeners */
    ProgressListenerChain additionalListeners = new ProgressListenerChain();
    TransferProgress transferProgress = new TransferProgress();
    transferProgress.setTotalBytesToTransfer(totalSize);
    /*
         * Bind additional progress listeners to this MultipleFileTransferProgressUpdatingListener
         * to receive ByteTransferred events from each single-file download implementation.
         */
    ProgressListener listener = new MultipleFileTransferProgressUpdatingListener(transferProgress, additionalListeners);
    List<DownloadImpl> downloads = new ArrayList<DownloadImpl>();
    String description = "Downloading from " + bucketName + "/" + keyPrefix;
    final MultipleFileDownloadImpl multipleFileDownload = new MultipleFileDownloadImpl(description, transferProgress, additionalListeners, keyPrefix, bucketName, downloads);
    multipleFileDownload.setMonitor(new MultipleFileTransferMonitor(multipleFileDownload, downloads));
    final CountDownLatch latch = new CountDownLatch(1);
    MultipleFileTransferStateChangeListener transferListener = new MultipleFileTransferStateChangeListener(latch, multipleFileDownload);
    for (COSObjectSummary summary : objectSummaries) {
        // TODO: non-standard delimiters
        File f = new File(destinationDirectory, summary.getKey());
        File parentFile = f.getParentFile();
        if (parentFile == null || !parentFile.exists() && !parentFile.mkdirs()) {
            throw new RuntimeException("Couldn't create parent directories for " + f.getAbsolutePath());
        }
        // All the single-file downloads share the same
        // MultipleFileTransferProgressUpdatingListener and
        // MultipleFileTransferStateChangeListener
        downloads.add((DownloadImpl) doDownload(new GetObjectRequest(summary.getBucketName(), summary.getKey()).<GetObjectRequest>withGeneralProgressListener(listener), f, transferListener, null, false));
    }
    if (downloads.isEmpty()) {
        multipleFileDownload.setState(TransferState.Completed);
        return multipleFileDownload;
    }
    // Notify all state changes waiting for the downloads to all be queued
    // to wake up and continue.
    latch.countDown();
    return multipleFileDownload;
}

Example 32 with GetObjectRequest

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

the class AbstractCOSEncryptionClientTest method testTransferManagerUploadDownBigFile.

@Test
public void testTransferManagerUploadDownBigFile() throws IOException, CosServiceException, CosClientException, InterruptedException {
    if (!judgeUserInfoValid()) {
        return;
    }
    TransferManager transferManager = new TransferManager(cosclient);
    File localFile = buildTestFile(1024 * 1024 * 10L);
    File downFile = new File(localFile.getAbsolutePath() + ".down");
    String key = "ut/" + localFile.getName();
    String destKey = key + ".copy";
    try {
        PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, key, localFile);
        ObjectMetadata objectMetadata = new ObjectMetadata();
        putObjectRequest.setMetadata(objectMetadata);
        Upload upload = transferManager.upload(putObjectRequest);
        UploadResult uploadResult = upload.waitForUploadResult();
        assertTrue(uploadResult.getETag().contains("-"));
        assertNotNull(uploadResult.getRequestId());
        assertNotNull(uploadResult.getDateStr());
        GetObjectRequest getObjectRequest = new GetObjectRequest(bucket, key);
        Download download = transferManager.download(getObjectRequest, downFile);
        download.waitForCompletion();
        // check file
        assertEquals(Md5Utils.md5Hex(localFile), Md5Utils.md5Hex(downFile));
        CopyObjectRequest copyObjectRequest = new CopyObjectRequest(bucket, key, bucket, destKey);
        Copy copy = transferManager.copy(copyObjectRequest, cosclient, null);
        copy.waitForCompletion();
    } finally {
        // delete file on cos
        clearObject(key);
        // delete file on cos
        clearObject(destKey);
        if (localFile.exists()) {
            assertTrue(localFile.delete());
        }
        if (downFile.exists()) {
            assertTrue(downFile.delete());
        }
    }
}

Example 33 with GetObjectRequest

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

the class TransferManagerDemo method pauseDownloadFileAndResume.

// 将文件下载到本地(中途暂停并继续开始)
public static void pauseDownloadFileAndResume() {
    // 1 初始化用户身份信息(secretId, secretKey)
    COSCredentials cred = new BasicCOSCredentials("AKIDXXXXXXXX", "1A2Z3YYYYYYYYYY");
    // 2 设置bucket的区域, COS地域的简称请参照 https://www.qcloud.com/document/product/436/6224
    ClientConfig clientConfig = new ClientConfig(new Region("ap-beijing-1"));
    // 3 生成cos客户端
    COSClient cosclient = new COSClient(cred, clientConfig);
    // bucket名需包含appid
    String bucketName = "mybucket-1251668577";
    ExecutorService threadPool = Executors.newFixedThreadPool(32);
    // 传入一个threadpool, 若不传入线程池, 默认TransferManager中会生成一个单线程的线程池。
    TransferManager transferManager = new TransferManager(cosclient, threadPool);
    String key = "aaa/bbb.txt";
    File downloadFile = new File("src/test/resources/download.txt");
    GetObjectRequest getObjectRequest = new GetObjectRequest(bucketName, key);
    try {
        // 返回一个异步结果copy, 可同步的调用waitForCompletion等待download结束, 成功返回void, 失败抛出异常.
        Download download = transferManager.download(getObjectRequest, downloadFile);
        Thread.sleep(5000L);
        PersistableDownload persistableDownload = download.pause();
        download = transferManager.resumeDownload(persistableDownload);
        showTransferProgress(download);
        download.waitForCompletion();
    } catch (CosServiceException e) {
        e.printStackTrace();
    } catch (CosClientException e) {
        e.printStackTrace();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
    transferManager.shutdownNow();
    cosclient.shutdown();
}

Example 34 with GetObjectRequest

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

the class TransferManagerDemo method downLoadFile.

// 将文件下载到本地
public static void downLoadFile() {
    // 1 初始化用户身份信息(secretId, secretKey)
    COSCredentials cred = new BasicCOSCredentials("AKIDXXXXXXXX", "1A2Z3YYYYYYYYYY");
    // 2 设置bucket的区域, COS地域的简称请参照 https://www.qcloud.com/document/product/436/6224
    ClientConfig clientConfig = new ClientConfig(new Region("ap-beijing-1"));
    // 3 生成cos客户端
    COSClient cosclient = new COSClient(cred, clientConfig);
    // bucket名需包含appid
    String bucketName = "mybucket-1251668577";
    ExecutorService threadPool = Executors.newFixedThreadPool(32);
    // 传入一个threadpool, 若不传入线程池, 默认TransferManager中会生成一个单线程的线程池。
    TransferManager transferManager = new TransferManager(cosclient, threadPool);
    String key = "aaa/bbb.txt";
    File downloadFile = new File("src/test/resources/download.txt");
    GetObjectRequest getObjectRequest = new GetObjectRequest(bucketName, key);
    try {
        // 返回一个异步结果copy, 可同步的调用waitForCompletion等待download结束, 成功返回void, 失败抛出异常.
        Download download = transferManager.download(getObjectRequest, downloadFile);
        download.waitForCompletion();
    } catch (CosServiceException e) {
        e.printStackTrace();
    } catch (CosClientException e) {
        e.printStackTrace();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
    transferManager.shutdownNow();
    cosclient.shutdown();
}

Example 35 with GetObjectRequest

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

the class BasicImageProcessing method imageCroppingDemo.

public static void imageCroppingDemo(COSClient cosClient) {
    String bucketName = "examplebucket-1250000000";
    String key = "qrcode.png";
    GetObjectRequest getObj = new GetObjectRequest(bucketName, key);
    // 宽高缩放50%
    String rule = "imageMogr2/iradius/150";
    getObj.putCustomQueryParameter(rule, null);
    cosClient.getObject(getObj, new File("qrcode-cropping.png"));
}