OSS SDK for Javaを使用したLiveChannelsの管理 - Object Storage Service

このトピックでは、Object Storage Service (OSS) SDK for Javaを使用してLiveChannelsで実行できる一般的な操作について説明します。たとえば、LiveChannelsを作成、一覧表示、および削除できます。

LiveChannelを作成する

リアルタイムメッセージングプロトコル (RTMP) を使用してオーディオおよびビデオデータをアップロードする前に、PutLiveChannel操作を呼び出してLiveChannelを作成する必要があります。 PutLiveChannelリクエストへの応答には、LiveChannelにストリームを取り込むために使用されるURLと、取り込まれたストリームを再生するために使用されるURLが含まれます。

説明

返されたURLを使用して、ストリームを取り込み、再生できます。ストリーム取り込みステータスの照会、ストリーム取り込みレコードの照会、ストリーム取り込みの無効化など、返されたLiveChannel名に基づいて操作を実行することもできます。

既存のLiveChannelが作成するLiveChannelと同じ名前を持つ場合、既存のLiveChannelは上書きされ、新しいLiveChannelはデフォルトの初期ステータスと設定を持ちます。

次のサンプルコードは、LiveChannelを作成する方法の例を示しています。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;
import java.util.List;
import com.aliyun.oss.common.auth.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the name of the LiveChannel. 
        String liveChannelName = "yourLiveChannelName";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();


        try {
            CreateLiveChannelRequest request = new CreateLiveChannelRequest(bucketName,
                    liveChannelName, "desc", LiveChannelStatus.Enabled, new LiveChannelTarget());
            CreateLiveChannelResult result = ossClient.createLiveChannel(request);

            // Query the ingest URL. 
            List<String> publishUrls = result.getPublishUrls();
            for (String item : publishUrls) {
                System.out.println(item);
            }

            // Query the streaming URL. 
            List<String> playUrls = result.getPlayUrls();
            for (String item : playUrls) {
                System.out.println(item);
            }

        } catch (OSSException oe) {
            oe.printStackTrace();
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

LiveChannelsのリスト

次のサンプルコードは、LiveChannelsを一覧表示する方法の例を示します。

import com.alibaba.fastjson.JSON;
import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;
import com.aliyun.oss.common.auth.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();
        
        try {
            ListLiveChannelsRequest request = new ListLiveChannelsRequest(bucketName);
            LiveChannelListing liveChannelListing = ossClient.listLiveChannels(request);
            System.out.println(JSON.toJSONString(liveChannelListing));
        } catch (OSSException oe) {
            oe.printStackTrace();
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

LiveChannelを削除する

説明

クライアントがストリームを取り込んでいるLiveChannelを削除するDeleteLiveChannelリクエストを送信すると、リクエストは失敗します。エラーが返されない場合、LiveChannelは削除されます。
DeleteLiveChannel操作は、LiveChannelのみを削除し、LiveChannelに取り込まれたストリームによって生成されたファイルは削除しません。

次のサンプルコードは、LiveChannelを削除する方法の例を示しています。

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;
import com.aliyun.oss.common.auth.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the name of the LiveChannel. 
        String liveChannelName = "yourLiveChannelName";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            LiveChannelGenericRequest request = new LiveChannelGenericRequest(bucketName, liveChannelName);
            ossClient.deleteLiveChannel(request);
        } catch (OSSException oe) {
            oe.printStackTrace();
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

LiveChannelのステータスを設定する

次のサンプルコードは、LiveChannelのステータスを設定する方法の例を示しています。サンプルコードがエラーを返さない場合、ステータス設定は成功です。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;
import com.aliyun.oss.common.auth.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the name of the LiveChannel. 
        String liveChannelName = "yourLiveChannelName";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            // To enable the LiveChannel, specify LiveChannelStatus.Enabled. To disable the LiveChannel, specify LiveChannelStatus.Disabled. 
            ossClient.setLiveChannelStatus(bucketName, liveChannelName, LiveChannelStatus.Enabled);
        } catch (OSSException oe) {
            oe.printStackTrace();
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

LiveChannelの署名付きURLの照会

次のサンプルコードは、LiveChannelの署名付きURLを照会する方法の例を示しています。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;
import java.util.List;
import com.aliyun.oss.common.auth.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the name of the LiveChannel. 
        String liveChannelName = "yourLiveChannelName";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            CreateLiveChannelRequest request = new CreateLiveChannelRequest(bucketName,
                    liveChannelName, "desc", LiveChannelStatus.Enabled, new LiveChannelTarget());
            CreateLiveChannelResult result = ossClient.createLiveChannel(request);

            // Query the ingest URL. 
            List<String> publishUrls = result.getPublishUrls();
            for (String item : publishUrls) {
                // Query the ingest URL that does not contain the signature information. 
                System.out.println(item);

                // Query the ingest URL that contains the signature information. 
                LiveChannelInfo liveChannelInfo = ossClient.getLiveChannelInfo(bucketName, liveChannelName);
                // expires specifies the validity period of the URL. The value of expires is a timestamp that follows the UNIX time format. In this example, the validity period is 1 hour. 
                long expires = System.currentTimeMillis() / 1000 + 3600;
                // playlistName specifies the name of the playlist when you call the createLiveChannel operation. If you do not specify this parameter when you call the createLiveChannel operation, the default value "playlist.m3u8" is used. You can call the getLiveChannelInfo operation to query the name of the playlist. 
                String signRtmpUrl = ossClient.generateRtmpUri(bucketName, liveChannelName, liveChannelInfo.getTarget().getPlaylistName(), expires);
                System.out.println(signRtmpUrl);
            }

            // Query the streaming URL. 
            List<String> playUrls = result.getPlayUrls();
            for (String item : playUrls) {
                System.out.println(item);
            }
        } catch (OSSException oe) {
            oe.printStackTrace();
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

LiveChannelのストリーム取り込みステータスの照会

次のサンプルコードは、LiveChannelのストリーム取り込みステータスを照会する方法の例を示しています。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;
import com.aliyun.oss.common.auth.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the name of the LiveChannel. 
        String liveChannelName = "yourLiveChannelName";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            LiveChannelStat liveChannelStat = ossClient.getLiveChannelStat(bucketName, liveChannelName);
            System.out.println(liveChannelStat.toString());
        } catch (OSSException oe) {
            oe.printStackTrace();
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

LiveChannelの設定を照会する

次のサンプルコードは、LiveChannelの設定を照会する方法の例を示しています。

import com.alibaba.fastjson.JSON;
import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;
import com.aliyun.oss.common.auth.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the name of the LiveChannel. 
        String liveChannelName = "yourLiveChannelName";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            LiveChannelInfo liveChannelInfo = ossClient.getLiveChannelInfo(bucketName, liveChannelName);
            System.out.println(JSON.toJSONString(liveChannelInfo));
        } catch (OSSException oe) {
            oe.printStackTrace();
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

LiveChannelのプレイリストを生成する

PostVodPlaylist操作を呼び出して、特定のLiveChannelのVODプレイリストを生成できます。 OSSは、特定の期間内に指定されたLiveChannelに取り込まれたストリームによって生成されたTSファイルを照会し、ファイルをM3U8プレイリストに収束させます。

次のサンプルコードは、LiveChannelのプレイリストを生成する方法の例を示しています。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import com.aliyun.oss.common.auth.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the name of the LiveChannel. 
        String liveChannelName = "yourLiveChannelName";
        // Specify the name of the playlist. 
        String playListName = "yourPlayListName";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();
        
        // Specify the start and end time for the query. The difference between the start time and end time cannot be greater than 24 hours. 
        long startTime = getUnixTimestamp("2019-06-27 23:00:00");
        long endTIme = getUnixTimestamp("2019-06-28 22:00:00");
        try {
            ossClient.generateVodPlaylist(bucketName, liveChannelName, playListName, startTime, endTIme);
        } catch (OSSException oe) {
            oe.printStackTrace();
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }

    private static long getUnixTimestamp(String time) {
        DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        try {
            Date date = format.parse(time);
            return date.getTime() / 1000;
        } catch (ParseException e) {
            e.printStackTrace();
            return 0;
        }
    }
}

LiveChannelのプレイリストを照会する

次のサンプルコードは、特定の時間範囲内にLiveChannelに取り込まれたストリームによって生成されたプレイリストを照会する方法の例を示しています。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.OSSObject;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import com.aliyun.oss.common.auth.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the name of the LiveChannel. 
        String liveChannelName = "yourLiveChannelName";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();
        
        long startTime = getUnixTimestamp("2019-06-27 23:00:00");
        long endTIme = getUnixTimestamp("2019-06-28 22:00:00");
        try {
            OSSObject ossObject = ossClient.getVodPlaylist(bucketName, liveChannelName, startTime, endTIme);
            System.out.println(ossObject.toString());
        } catch (OSSException oe) {
            oe.printStackTrace();
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }

    private static long getUnixTimestamp(String time) {
        DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        try {
            Date date = format.parse(time);
            return date.getTime() / 1000;
        } catch (ParseException e) {
            e.printStackTrace();
            return 0;
        }
    }
}

LiveChannelのストリーム取り込みレコードの照会

GetLiveChannelHistory操作を呼び出して、特定のLiveChannelのストリーム取り込みレコードを照会できます。 GetLiveChannelHistory操作を呼び出して、LiveChannelの最大10個の最新のストリーム取り込みレコードを照会できます。

次のサンプルコードは、LiveChannelのストリーム取り込みレコードを照会する方法の例を示しています。

import com.alibaba.fastjson.JSON;
import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.LiveRecord;
import java.util.List;
import com.aliyun.oss.common.auth.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the name of the LiveChannel. 
        String liveChannelName = "yourLiveChannelName";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            List<LiveRecord> list = ossClient.getLiveChannelHistory(bucketName, liveChannelName);
            System.out.println(JSON.toJSONString(list));
        } catch (OSSException oe) {
            oe.printStackTrace();
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

Object Storage Service:OSS SDK for Javaを使用したLiveChannelsの管理