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

Example 1 with COSObjectSummary

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

the class ListObjectsDemo method listAllObjects.

// 如果要获取超过maxkey数量的object或者获取所有的object, 则需要循环调用listobject, 用上一次返回的next marker作为下一次调用的marker,
// 直到返回的truncated为false
public static void listAllObjects() {
    // 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";
    ListObjectsRequest listObjectsRequest = new ListObjectsRequest();
    // 设置bucket名称
    listObjectsRequest.setBucketName(bucketName);
    // prefix表示列出的object的key以prefix开始
    listObjectsRequest.setPrefix("");
    // deliter表示分隔符, 设置为/表示列出当前目录下的object, 设置为空表示列出所有的object
    listObjectsRequest.setDelimiter("");
    // 设置最大遍历出多少个对象, 一次listobject最大支持1000
    listObjectsRequest.setMaxKeys(1000);
    ObjectListing objectListing = null;
    do {
        try {
            objectListing = cosclient.listObjects(listObjectsRequest);
        } catch (CosServiceException e) {
            e.printStackTrace();
            return;
        } catch (CosClientException e) {
            e.printStackTrace();
            return;
        }
        // common prefix表示表示被delimiter截断的路径, 如delimter设置为/, common prefix则表示所有子目录的路径
        List<String> commonPrefixs = objectListing.getCommonPrefixes();
        // object summary表示所有列出的object列表
        List<COSObjectSummary> cosObjectSummaries = objectListing.getObjectSummaries();
        for (COSObjectSummary cosObjectSummary : cosObjectSummaries) {
            // 文件的路径key
            String key = cosObjectSummary.getKey();
            // 文件的etag
            String etag = cosObjectSummary.getETag();
            // 文件的长度
            long fileSize = cosObjectSummary.getSize();
            // 文件的存储类型
            String storageClasses = cosObjectSummary.getStorageClass();
        }
        String nextMarker = objectListing.getNextMarker();
        listObjectsRequest.setMarker(nextMarker);
    } while (objectListing.isTruncated());
    cosclient.shutdown();
}

Example 2 with COSObjectSummary

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

the class ListObjectTest method ListObjectNoDelimiterTest.

@Test
public void ListObjectNoDelimiterTest() {
    if (!judgeUserInfoValid()) {
        return;
    }
    ObjectListing objectListing = cosclient.listObjects(bucket, keyPrefix);
    assertEquals(0L, objectListing.getCommonPrefixes().size());
    assertEquals(arrayNum, objectListing.getObjectSummaries().size());
    List<COSObjectSummary> objectSummaries = objectListing.getObjectSummaries();
    for (int i = 0; i < arrayNum; ++i) {
        COSObjectSummary cosObjectSummary = objectSummaries.get(i);
        String expectedKey = String.format("%s/%dk.txt", keyPrefix, i);
        assertEquals(expectedKey, cosObjectSummary.getKey());
        assertEquals(i * 1024L, cosObjectSummary.getSize());
    }
}

Example 3 with COSObjectSummary

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

the class ListObjectTest method ListNextBatchObjectWithNoTrunCated.

@Test
public void ListNextBatchObjectWithNoTrunCated() {
    if (!judgeUserInfoValid()) {
        return;
    }
    ObjectListing objectListingPrev = new ObjectListing();
    objectListingPrev.setBucketName(bucket);
    objectListingPrev.setPrefix(keyPrefix);
    objectListingPrev.setNextMarker("");
    objectListingPrev.setMaxKeys(100);
    objectListingPrev.setDelimiter("");
    objectListingPrev.setTruncated(true);
    ListNextBatchOfObjectsRequest listNextBatchOfObjectsRequest = new ListNextBatchOfObjectsRequest(objectListingPrev);
    ObjectListing objectListingNext = cosclient.listNextBatchOfObjects(listNextBatchOfObjectsRequest);
    assertEquals(0L, objectListingNext.getCommonPrefixes().size());
    assertEquals(arrayNum, objectListingNext.getObjectSummaries().size());
    List<COSObjectSummary> objectSummaries = objectListingNext.getObjectSummaries();
    for (int i = 0; i < arrayNum; ++i) {
        COSObjectSummary cosObjectSummary = objectSummaries.get(i);
        String expectedKey = String.format("%s/%dk.txt", keyPrefix, i);
        assertEquals(expectedKey, cosObjectSummary.getKey());
        assertEquals(i * 1024L, cosObjectSummary.getSize());
    }
}

Example 4 with COSObjectSummary

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

the class AbstractCOSClientTest method clearBucket.

private static void clearBucket() throws Exception {
    abortAllNotFinishedMultipartUpload();
    // 先判断bucket是否开启了版本控制
    GetBucketVersioningConfigurationRequest getBucketVersioningConfigurationRequest = new GetBucketVersioningConfigurationRequest(bucket);
    BucketVersioningConfiguration bucketVersioningConfiguration = cosclient.getBucketVersioningConfiguration(getBucketVersioningConfigurationRequest);
    if (bucketVersioningConfiguration.getStatus().compareToIgnoreCase(BucketVersioningConfiguration.ENABLED) == 0) {
        clearObjectVersions();
    }
    String nextMarker = "";
    boolean isTruncated = false;
    do {
        ListObjectsRequest listObjectsRequest = new ListObjectsRequest();
        listObjectsRequest.setBucketName(bucket);
        listObjectsRequest.setMaxKeys(1000);
        listObjectsRequest.setPrefix("");
        listObjectsRequest.setDelimiter("");
        listObjectsRequest.setMarker(nextMarker);
        ObjectListing objectListing = cosclient.listObjects(listObjectsRequest);
        for (COSObjectSummary cosObjectSummary : objectListing.getObjectSummaries()) {
            String key = cosObjectSummary.getKey();
            // 删除这个key
            System.out.println(key);
            cosclient.deleteObject(bucket, key);
        }
        nextMarker = objectListing.getNextMarker();
        isTruncated = objectListing.isTruncated();
    } while (isTruncated);
}

Example 5 with COSObjectSummary

use of com.qcloud.cos.model.COSObjectSummary in project hadoop-cos by tencentyun.

the class CosNativeFileSystemStore method list.

/**
 * list objects
 *
 * @param prefix           prefix
 * @param delimiter        delimiter
 * @param maxListingLength max no. of entries
 * @param priorLastKey     last key in any previous search
 * @return a list of matches
 * @throws IOException on any reported failure
 */
private CosNPartialListing list(String prefix, String delimiter, int maxListingLength, String priorLastKey, CosNResultInfo info) throws IOException {
    LOG.debug("List the cos key prefix: {}, max listing length: {}, delimiter: {}, prior last key: {}.", prefix, delimiter, maxListingLength, priorLastKey);
    if (!prefix.startsWith(CosNFileSystem.PATH_DELIMITER)) {
        prefix += CosNFileSystem.PATH_DELIMITER;
    }
    ListObjectsRequest listObjectsRequest = new ListObjectsRequest();
    listObjectsRequest.setBucketName(bucketName);
    listObjectsRequest.setPrefix(prefix);
    listObjectsRequest.setDelimiter(delimiter);
    listObjectsRequest.setMarker(priorLastKey);
    listObjectsRequest.setMaxKeys(maxListingLength);
    ObjectListing objectListing = null;
    try {
        objectListing = (ObjectListing) callCOSClientWithRetry(listObjectsRequest);
    } catch (Exception e) {
        String errMsg = String.format("prefix: %s, delimiter: %s, maxListingLength: %d, " + "priorLastKey: %s. list occur a exception: %s", prefix, (delimiter == null) ? "" : delimiter, maxListingLength, priorLastKey, e);
        LOG.error(errMsg);
        handleException(new Exception(errMsg), prefix);
    }
    if (null == objectListing) {
        String errMessage = String.format("List objects failed for the prefix: %s, delimiter: %s, " + "maxListingLength:%d, priorLastKey: %s.", prefix, (delimiter == null) ? "" : delimiter, maxListingLength, priorLastKey);
        handleException(new Exception(errMessage), prefix);
    }
    ArrayList<FileMetadata> fileMetadataArray = new ArrayList<>();
    ArrayList<FileMetadata> commonPrefixArray = new ArrayList<>();
    List<COSObjectSummary> summaries = objectListing.getObjectSummaries();
    boolean isKeySamePrefix = false;
    for (COSObjectSummary cosObjectSummary : summaries) {
        String filePath = cosObjectSummary.getKey();
        if (!filePath.startsWith(CosNFileSystem.PATH_DELIMITER)) {
            filePath = CosNFileSystem.PATH_DELIMITER + filePath;
        }
        if (filePath.equals(prefix)) {
            isKeySamePrefix = true;
            continue;
        }
        long mtime = 0;
        if (cosObjectSummary.getLastModified() != null) {
            mtime = cosObjectSummary.getLastModified().getTime();
        }
        long fileLen = cosObjectSummary.getSize();
        String fileEtag = cosObjectSummary.getETag();
        if (cosObjectSummary.getKey().endsWith(CosNFileSystem.PATH_DELIMITER) && cosObjectSummary.getSize() == 0) {
            fileMetadataArray.add(new FileMetadata(filePath, fileLen, mtime, false, fileEtag, null, null, null, cosObjectSummary.getStorageClass()));
        } else {
            fileMetadataArray.add(new FileMetadata(filePath, fileLen, mtime, true, fileEtag, null, null, null, cosObjectSummary.getStorageClass()));
        }
    }
    List<String> commonPrefixes = objectListing.getCommonPrefixes();
    for (String commonPrefix : commonPrefixes) {
        if (!commonPrefix.startsWith(CosNFileSystem.PATH_DELIMITER)) {
            commonPrefix = CosNFileSystem.PATH_DELIMITER + commonPrefix;
        }
        commonPrefixArray.add(new FileMetadata(commonPrefix, 0, 0, false));
    }
    FileMetadata[] fileMetadata = new FileMetadata[fileMetadataArray.size()];
    for (int i = 0; i < fileMetadataArray.size(); ++i) {
        fileMetadata[i] = fileMetadataArray.get(i);
    }
    FileMetadata[] commonPrefixMetaData = new FileMetadata[commonPrefixArray.size()];
    for (int i = 0; i < commonPrefixArray.size(); ++i) {
        commonPrefixMetaData[i] = commonPrefixArray.get(i);
    }
    // 如果truncated为false, 则表明已经遍历完
    if (!objectListing.isTruncated()) {
        CosNPartialListing ret = new CosNPartialListing(null, fileMetadata, commonPrefixMetaData);
        if (info != null) {
            info.setRequestID(objectListing.getRequestId());
            info.setKeySameToPrefix(isKeySamePrefix);
        }
        return ret;
    } else {
        CosNPartialListing ret = new CosNPartialListing(objectListing.getNextMarker(), fileMetadata, commonPrefixMetaData);
        if (info != null) {
            info.setRequestID(objectListing.getRequestId());
            info.setKeySameToPrefix(isKeySamePrefix);
        }
        return ret;
    }
}