Bucket是OSS上的命名空间，权限控制、日志记录等高级功能的管理实体；Bucket名称在整个OSS服务中具有全局唯一性，且不能修改；存储在OSS上的每个Object必须都包含在某个Bucket中。一个应用，例如图片分享网站，可以对应一个或多个Bucket。一个用户最多可创建10个Bucket，但每个Bucket中存放的Object的数量和大小总和没有限制，用户不需要考虑数据的可扩展性。
Bucket的创建，删除，访问代码如下：
/**
* 阿里对象存储OSS数据管理
* */
public class AliOSSClientEx extends OSSClient {
private static final Log log = LogFactory.getLog(AliOSSClientEx.class);
private ServiceClient serviceClientEx;
private LiveChannelOperationEx liveChannelOperationEx;
private String endPoint;
private String bucketName;
/**
* Create one OSSClient object
* */
public static AliOSSClientEx getOSSClient(String bucketName, String endPoint, String accessKeyId,
String accessKeySecret) {
try {
ClientConfiguration conf = new ClientConfiguration();
// 设置OSSClient使用的最大连接数，默认1024
conf.setMaxConnections(512);
// 设置请求超时时间，默认50秒
conf.setSocketTimeout(60 * 1000);
// 设置失败请求重试次数，默认3次
conf.setMaxErrorRetry(3);
DefaultCredentialProvider credentialProvider = new DefaultCredentialProvider(accessKeyId, accessKeySecret);
AliOSSClientEx ossClient = new AliOSSClientEx(bucketName, endPoint, credentialProvider, conf);
return ossClient;
} catch (Throwable t) {
log.error("Create Ali OSSClient exception," + endPoint, t);
return null;
}
}
public AliOSSClientEx(String bucketName, String endPoint, DefaultCredentialProvider credentialProvider,
ClientConfiguration conf) {
super(endPoint, credentialProvider, conf);
this.bucketName = bucketName;
this.endPoint = endPoint;
this.initOperations(conf, credentialProvider);
}
/**
* @param bucketName
* */
public String createOSSBucket(String bucketName) throws Exception {
try {
Bucket bucket = null;
if (!super.doesBucketExist(bucketName)) {
bucket = super.createBucket(new CreateBucketRequest(bucketName));
return bucket.getName() + "." + endPoint;
} else {
BucketInfo bucketInfo = getBucketInfo(bucketName);
return bucketInfo.getBucket().getName() + "." + endPoint;
}
} catch (Exception ex) {
log.error("Create bucket exception:", ex);
throw ex;
}
}
/**
* @param bucketName
* */
public boolean deleteOSSBucket(String bucketName) {
try {
if (super.doesBucketExist(bucketName)) {
super.deleteBucket(bucketName);
return true;
}
} catch (Exception ex) {
log.error("Delete bucket exception", ex);
}
return false;
}
public boolean isBucketExists(String bucketName) {
List<Bucket> buckets = listBuckets();
if (buckets != null) {
for (Bucket bucket : buckets) {
if (bucketName.equals(bucket.getName())) {
return true;
}
}
}
return false;
}
/**
* @param liveChannelName
*
* @return 返回推流地址
* */
public String createLiveChannel(String liveChannelName) throws Exception {
try {
CreateLiveChannelRequest liveChannelRequest = new CreateLiveChannelRequest(bucketName, liveChannelName);
CreateLiveChannelResult liveChannelResult = super.createLiveChannel(liveChannelRequest);
List<String> urls = liveChannelResult.getPublishUrls();
if (urls != null && urls.size() > 0) {
return urls.get(0);
}
return null;
} catch (Exception ex) {
log.error("Create default live channel exception,liveChannel=" + liveChannelName, ex);
throw ex;
}
}
/**
* @param liveChannelName
* @return 返回指定LiveChannel最近的10次推流记录
* */
public List<LiveRecord> getLiveChannelHistory(String liveChannelName) {
try {
List<LiveRecord> liveRecords = super.getLiveChannelHistory(bucketName, liveChannelName);
return liveRecords;
} catch (Exception ex) {
log.error("Get live channel history record exception,liveChannel=" + liveChannelName, ex);
return null;
}
}
/**
*
* @param liveChannelName
* @return 获取指定LiveChannel的推流状态信息。
*
* */
public LiveChannelStat getLiveChannelStat(String liveChannelName) {
try {
LiveChannelStat stat = super.getLiveChannelStat(bucketName, liveChannelName);
return stat;
} catch (Exception ex) {
log.error("Get live channel state exception,liveChannel=" + liveChannelName, ex);
return null;
}
}
/**
* @param liveChannelName
* @return 获取指定LiveChannel的配置信息
* */
public LiveChannelInfo getLiveChannelInfo(String liveChannelName) {
try {
LiveChannelInfo channelInfo = super.getLiveChannelInfo(bucketName, liveChannelName);
return channelInfo;
} catch (Exception ex) {
log.error("Get live channel info exception,liveChannel=" + liveChannelName, ex);
return null;
}
}
/**
* 获取Backet下的所有liveChannels
*
* @return
* */
public List<LiveChannel> getLiveChannels() {
try {
List<LiveChannel> channels = super.listLiveChannels(bucketName);
return channels;
} catch (Exception ex) {
log.error("Get bucket live channels exception.", ex);
return null;
}
}
/**
* 设置LiveChanel存储对象的生命周期，Lifecycle开启后，OSS将按照配置，
* 定期自动删除或转储与Lifecycle规则相匹配的Object。
*
* @param liveChannelName
* :
*
* @param days
* :指定规则在对象最后修改时间过后多少天生效。
*
* */
public boolean setChannelLifecycle(String channelId, String liveChannelName, int days) {
try {
SetBucketLifecycleRequest lifecycleRequest = new SetBucketLifecycleRequest(bucketName);
LifecycleRule lifecycleRule = new LifecycleRule();
lifecycleRule.setId(channelId);
lifecycleRule.setExpirationDays(days);
lifecycleRule.setPrefix(liveChannelName + "/");
lifecycleRule.setStatus(RuleStatus.Enabled);
lifecycleRequest.AddLifecycleRule(lifecycleRule);
this.setBucketLifecycle(lifecycleRequest);
return true;
} catch (Exception ex) {
log.error("Set live channel object life cycle exception,liveChannel=" + liveChannelName, ex);
return false;
}
}
/**
* 删除LiveChanel存储对象的生命周期，实际上并不是真正的删除，而是把生命周期规则设备为无效
*
* @param liveChannelName
* :
*
* */
public boolean deleteChannelLifecycle(String channelId, String liveChannelName) {
try {
SetBucketLifecycleRequest lifecycleRequest = new SetBucketLifecycleRequest(bucketName);
LifecycleRule lifecycleRule = new LifecycleRule();
lifecycleRule.setId(channelId);
lifecycleRule.setExpirationDays(99999);
lifecycleRule.setPrefix(liveChannelName + "/");
lifecycleRule.setStatus(RuleStatus.Disabled);
lifecycleRequest.AddLifecycleRule(lifecycleRule);
this.setBucketLifecycle(lifecycleRequest);
return true;
} catch (Exception ex) {
log.error("Set live channel object life cycle exception,liveChannel=" + liveChannelName, ex);
return false;
}
}
/**
* 用来为指定LiveChannel推流生成的，指定时间段内的ts文件生成一个点播用的播放列表（m3u8文件）
*
* @param liveChannelName
* @param playListName
* @param startTime
* :开始时间 Unix timestamp(秒)
* @param entTime
* :结束时间 Unix timestamp(秒) endTime必须大于startTime，且时间跨度不能大于1天。
*
* @return OSS会查询指定时间范围内的所有该LiveChannel推流生成的ts文件，并将其拼装为一个播放列表
* @throws Exception
* */
public VodResult postVodPlaylist(String liveChannelName, String playListName, long startTime, long endTime)
throws Exception {
if (startTime >= endTime) {
throw new Exception("Start time must be less than the end time.");
}
if ((endTime - startTime) >= 24 * 3600) {
throw new Exception("The time span of the start and end times cannot be greater than one day.");
}
try {
GenerateVodPlaylistRequest generateVodPlaylistRequest = new GenerateVodPlaylistRequest(bucketName,
liveChannelName, playListName, startTime, endTime);
return liveChannelOperationEx.generateVodPlaylistEx(generateVodPlaylistRequest);
} catch (Exception ex) {
log.error("Get vod play list exception,liveName=" + liveChannelName + ",playListName=" + playListName, ex);
return null;
}
}
/**
* 获取指定的LiveChannel下的所有ts文件
*
* @param liveChannel
* :
* @param prefix
* :限定返回的object key必须以prefix作为前缀
* @return List<ChannelFileSummary>
* */
public List<ChannelFileSummary> getLiveChannelFiles(String liveChannel, String prefix) {
return getLiveChannelFiles(liveChannel, prefix, null);
}
/**
* 获取指定的LiveChannel下的所有ts文件
*
* @param liveChannel
* :
* @param prefix
* : 限定返回的object key必须以prefix作为前缀。
* @param marker
* :设定结果从marker之后按字母排序的第一个开始返回
*
* */
public List<ChannelFileSummary> getLiveChannelFiles(String liveChannel, String prefix, String marker) {
try {
final int maxKeys = 999;
List<ChannelFileSummary> fileSummaries = new ArrayList<ChannelFileSummary>();
ListObjectsRequest objectsRequest = new ListObjectsRequest(bucketName);
objectsRequest.setMaxKeys(maxKeys);
objectsRequest.setPrefix(liveChannel + "/" + prefix);
objectsRequest.setMarker(marker);
ObjectListing objectListing = super.listObjects(objectsRequest);
if (objectListing.getObjectSummaries().size() > 0) {
ChannelFileSummary fileSummary = null;
for (OSSObjectSummary objectSummary : objectListing.getObjectSummaries()) {
fileSummary = new ChannelFileSummary(objectSummary);
if (liveChannel.equals(fileSummary.getChannelName())) {
fileSummaries.add(fileSummary);
}
}
}
return fileSummaries;
} catch (Exception ex) {
log.error("Get live channel files exception,liveChannel=" + liveChannel, ex);
return null;
}
}
/**
* 查询小时内的所有.ts文件
*
* @param liveChannel
* :
* @param dateHour
* :
* @return List<ChannelFileSummary>
* */
public List<ChannelFileSummary> getLiveChannelFilesByTime(String liveChannel, Date dateHour) {
Calendar beginCalendar = Calendar.getInstance();
beginCalendar.setTime(dateHour);
beginCalendar.set(Calendar.MINUTE, 0);
beginCalendar.set(Calendar.SECOND, 0);
beginCalendar.add(Calendar.MILLISECOND, 0);
Calendar endCalendar = Calendar.getInstance();
endCalendar.setTime(dateHour);
endCalendar.set(Calendar.MINUTE, 59);
endCalendar.set(Calendar.SECOND, 59);
endCalendar.add(Calendar.MILLISECOND, 999);
return getLiveChannelFilesByTime(liveChannel, beginCalendar.getTime(), endCalendar.getTime());
}
/**
* 查询指定的时间范围内的.ts文件
*
* @param liveChannel
* :
* @param beginTime
* :
* @param endTime
* :
* @return List<ChannelFileSummary>
* */
public List<ChannelFileSummary> getLiveChannelFilesByTime(String liveChannel, Date beginTime, Date endTime) {
List<String> lstTimeRange = getTimeRange(beginTime, endTime);
long startTimestamp = beginTime.getTime();
long endTimestamp = endTime.getTime();
List<ChannelFileSummary> channelFileSummaries = new ArrayList<ChannelFileSummary>();
List<ChannelFileSummary> tempFileSummaries = null;
for (String timePrefix : lstTimeRange) {
tempFileSummaries = getLiveChannelFiles(liveChannel, timePrefix);
if (tempFileSummaries != null) {
for (ChannelFileSummary fileSummary : tempFileSummaries) {
if (fileSummary.getFileTimestamp() > 0) {
if (fileSummary.getFileTimestamp() >= startTimestamp
&& fileSummary.getFileTimestamp() <= endTimestamp) {
channelFileSummaries.add(fileSummary);
}
}
}
}
}
return channelFileSummaries;
}
/**
* @param liveChannelName
*
* @param playListName
*
* @return 返回推流地址
* */
public String createLiveChannel(String liveChannelName, String playListName) {
try {
LiveChannelTarget target = new LiveChannelTarget("HLS", 100, 99, playListName);
CreateLiveChannelRequest createLiveChannelRequest = new CreateLiveChannelRequest(bucketName,
liveChannelName, "", LiveChannelStatus.Enabled, target);
CreateLiveChannelResult createLiveChannelResult = super.createLiveChannel(createLiveChannelRequest);
List<String> urls = createLiveChannelResult.getPublishUrls();
if (urls != null && urls.size() > 0) {
return urls.get(0);
}
} catch (Exception ex) {
log.error("Create target live channel exception,liveChannel=" + liveChannelName + ",playListName="
+ playListName, ex);
}
return null;
}
/**
* @param liveChannelName
* @return true:success,false:
* */
public boolean deleteLiveChannel(String liveChannelName) {
try {
LiveChannelGenericRequest liveChannelRequest = new LiveChannelGenericRequest(bucketName, liveChannelName);
super.deleteLiveChannel(liveChannelRequest);
return true;
} catch (Exception ex) {
log.error("Delete live channel exception,liveChannel=" + liveChannelName, ex);
return false;
}
}
/**
* @param liveChannelName
*
* @param playListName
* @return rtmp地址
* */
public String getSignRtmpUrl(String liveChannelName, String playListName) {
// 设置URL过期时间为1小时
return getSignRtmpUrl(liveChannelName, playListName, 24 * 3600 * 1000);
}
/**
* @param liveChannelName
*
* @param playListName
*
* @param expires
* URL的过期时间，单位：秒
* @return rtmp地址
*
* */
public String getSignRtmpUrl(String liveChannelName, String playListName, long expires) {
try {
long expiresTime = new Date().getTime() / 1000 + expires;
GenerateRtmpUriRequest rtmpUriRequest = new GenerateRtmpUriRequest(bucketName, liveChannelName,
playListName, expiresTime);
// 生成rtmp签名
String signedUrl = super.generateRtmpUri(rtmpUriRequest);
return signedUrl;
} catch (Exception ex) {
log.error("Generate rtmp url exception,liveChannel=" + liveChannelName, ex);
return null;
}
}
private void initOperations(ClientConfiguration config, DefaultCredentialProvider credentialProvider) {
if (config.isRequestTimeoutEnabled()) {
this.serviceClientEx = new TimeoutServiceClient(config);
} else {
this.serviceClientEx = new DefaultServiceClient(config);
}
this.liveChannelOperationEx = new LiveChannelOperationEx(this.serviceClientEx, credentialProvider);
this.liveChannelOperationEx.setEndpoint(toURI(endPoint));
}
private URI toURI(String endpoint) throws IllegalArgumentException {
if (!endpoint.contains("://")) {
ClientConfiguration conf = this.serviceClientEx.getClientConfiguration();
endpoint = conf.getProtocol().toString() + "://" + endpoint;
}
try {
return new URI(endpoint);
} catch (URISyntaxException e) {
throw new IllegalArgumentException(e);
}
}
private List<String> getTimeRange(Date beginTime, Date endTime) {
int begin = (int) (beginTime.getTime() / 1000000);
int end = (int) (endTime.getTime() / 1000000);
List<String> lstRange = new ArrayList<String>();
for (int index = begin; index <= end; index++) {
lstRange.add(String.valueOf(index));
}
return lstRange;
}}
继承LiveChannelOperation，获取generateVodPlaylist方法结果
public class LiveChannelOperationEx extends LiveChannelOperation {
private VodResponseParser vodResponseParser;
public LiveChannelOperationEx(ServiceClient client, CredentialsProvider credsProvider) {
super(client, credsProvider);
vodResponseParser = new VodResponseParser();
}
public VodResult generateVodPlaylistEx(GenerateVodPlaylistRequest generateVodPlaylistRequest) throws OSSException,
ClientException {
assertParameterNotNull(generateVodPlaylistRequest, "generateVodPlaylistRequest");
String bucketName = generateVodPlaylistRequest.getBucketName();
String liveChannelName = generateVodPlaylistRequest.getLiveChannelName();
String playlistName = generateVodPlaylistRequest.getPlaylistName();
Long startTime = generateVodPlaylistRequest.getStratTime();
Long endTime = generateVodPlaylistRequest.getEndTime();
assertParameterNotNull(bucketName, "bucketName");
ensureBucketNameValid(bucketName);
assertParameterNotNull(liveChannelName, "liveChannelName");
ensureLiveChannelNameValid(liveChannelName);
assertParameterNotNull(playlistName, "playlistName");
assertParameterNotNull(startTime, "stratTime");
assertParameterNotNull(endTime, "endTime");
Map<String, String> parameters = new HashMap<String, String>();
parameters.put(RequestParameters.SUBRESOURCE_VOD, null);
parameters.put(RequestParameters.SUBRESOURCE_START_TIME, startTime.toString());
parameters.put(RequestParameters.SUBRESOURCE_END_TIME, endTime.toString());
String key = liveChannelName + "/" + playlistName;
RequestMessage request = new OSSRequestMessageBuilder(getInnerClient()).setEndpoint(getEndpoint())
.setMethod(HttpMethod.POST).setBucket(bucketName).setKey(key).setParameters(parameters)
.setInputStream(new ByteArrayInputStream(new byte[0])).setInputSize(0)
.setOriginalRequest(generateVodPlaylistRequest).build();
return doOperation(request, vodResponseParser, bucketName, key);
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