簡介

示例調用API進行創建HLS標準加密工作流。創建工作流，請參見新增媒體工作流。

示例代碼依賴

• MPS SDK，請參見安裝。

• 其他依賴。

  <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.68.noneautotype</version>
  </dependency>

示例代碼

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.aliyun.mps.sdk.utils.InitClient;
import com.aliyuncs.DefaultAcsClient;
import com.aliyuncs.IAcsClient;
import com.aliyuncs.mts.model.v20140618.AddMediaWorkflowRequest;
import com.aliyuncs.mts.model.v20140618.AddMediaWorkflowResponse;

/**
 * *****   使用須知     ******
 * 本demo為創建標準加密工作流示例, 如果您是初次使用標準加密, 首次需使用本demo,并執行一次該工作流來打通系統配置
 * 工作流數據結構較為復雜, 修改時請注意參數的準確性, 工作流數據結構參考 http://bestwisewords.com/document_detail/602860.html
 * KeyUri為您的解密服務地址, 請確保可用性, 否則會導致解密播放失敗
 * 如何使用標準加密  請參考: xxxxxxxxxxxx
 */
public class MediaHlsWorkflow {
    /**管道ID, 可以在控制臺 【全局設置】->【管道】查看*/
    final static String PIPELINE_ID = "be3a2b1ce40a0cbf****";
    /**模板ID, 預置模板參考 http://bestwisewords.com/document_detail/29256.html*/
    final static String TEMPLATE_ID = "S00000001-100020";
    final static String OSS_LOCATION = "oss-cn-beijing";
    /**控制臺綁定的的輸入bucket名稱*/
    final static String INPUT_BUCKET = "<your bucket name>";
    /**觸發路徑  以 / 結尾*/
    final static String INPUT_PATH = "mps-test/demo/";
    /**控制臺綁定的的輸出bucket名稱*/
    final static String OUTPUT_BUCKET = "<your bucket name>";
    /** 加密類型  固定hls-aes-128*/
    final static String ENCRYPTION_TYPE = "hls-aes-128";
    /**解密服務地址 例如http://example.aliyundoc.com*/
    final static String HLS_KEY_URI = "http://127.0.0.1:8888";
    final static String ACT_START = "Act-Start";
    final static String ACT_ENCRYPTION = "Act-HLS-Encryption";
    final static String ACT_REPORT = "Act-Report";

    public static void main(String[] args) throws Exception {

        //初始化調用 client
        DefaultAcsClient client = InitClient.initMpsClient();
        AddMediaWorkflowResponse response;
        try {
            response = addMediaWorkflow(client);
            System.out.println("RequestId is:" + response.getRequestId());

        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    public static AddMediaWorkflowResponse addMediaWorkflow(IAcsClient client) throws Exception {
        AddMediaWorkflowRequest request = new AddMediaWorkflowRequest();
        request.setTopology(createWorkflow().toJSONString());
        request.setName("HLS加密工作流");
        return client.getAcsResponse(request);
    }

    /**
     * 創建工作流數據結構
     * @return
     */
    private static JSONObject createWorkflow() {
        JSONObject workflow = new JSONObject();
        JSONObject activities = new JSONObject();
        activities.put(ACT_START, createStartActivity());
        activities.put(ACT_ENCRYPTION, createTrancodeActivity());
        activities.put(ACT_REPORT, createReportActivity());
        workflow.put("Activities", activities);
        workflow.put("Dependencies", createDependencies());
        return workflow;
    }

    /**
     * 添加工作流開始節點
     * @return
     */
    private static JSONObject createStartActivity() {
        JSONObject startActivity = new JSONObject();
        startActivity.put("Name", ACT_START);
        startActivity.put("Type", "Start");
        startActivity.put("Parameters", buildStartParameters());
        return startActivity;
    }

    /**
     * 添加工作流輸入配置
     * @return
     */
    private static JSONObject buildStartParameters() {
        JSONObject parameters = new JSONObject();
        parameters.put("PipelineId", PIPELINE_ID);
        //輸入buket結構
        JSONObject inputFile = new JSONObject();
        inputFile.put("Bucket", INPUT_BUCKET);
        inputFile.put("Location", OSS_LOCATION);
        inputFile.put("ObjectPrefix", INPUT_PATH);

        parameters.put("InputFile", inputFile);
        return parameters;
    }

    /**
     * 添加工作流轉碼節點
     * @return
     */
    private static JSONObject createTrancodeActivity() {
        JSONObject transcodeActivity = new JSONObject();
        transcodeActivity.put("Name", ACT_ENCRYPTION);
        transcodeActivity.put("Type", "Transcode");

        JSONObject transcodeParamters = new JSONObject();
        transcodeParamters.put("OutputBucket", OUTPUT_BUCKET);
        transcodeParamters.put("OutputLocation", OSS_LOCATION);
        transcodeParamters.put("Outputs", buildOutputsConfig());

        transcodeActivity.put("Parameters", transcodeParamters);
        return transcodeActivity;
    }

    /**
     * 添加工作流輸出配置
     * @return
     */
    private  static JSONArray buildOutputsConfig() {
        JSONArray outputs = new JSONArray();
        JSONObject output = new JSONObject();
        output.put("ObjectRegex", ACT_ENCRYPTION + "/{RunId}/{FileName}");
        output.put("TemplateId", TEMPLATE_ID);
        output.put("Encryption", buildEncryption());
        outputs.add(output);
        return outputs;
    }

    /**
     * 加密配置
     * @return
     */
    private static JSONObject buildEncryption() {
        JSONObject encryption = new JSONObject();
        encryption.put("Type", ENCRYPTION_TYPE);
        encryption.put("KeyUri", HLS_KEY_URI);
        return encryption;
    }

    /**
     * 添加Report節點配置
     * @return
     */
    private static JSONObject createReportActivity() {
        JSONObject reportActivity = new JSONObject();
        reportActivity.put("Name", ACT_REPORT);
        JSONObject parameters = new JSONObject();
        parameters.put("PublishType","Auto");
        reportActivity.put("Parameters", parameters);
        reportActivity.put("Type", "Report");
        return  reportActivity;
    }

    /**
     * 添加工作流依賴關系
     * 依賴關系是拓撲結構中的邊，指明活動之間的依賴。
     * @return
     */
    private static JSONObject createDependencies() {
        JSONObject dependencies = new JSONObject();
        JSONArray subActivityOfStart = new JSONArray();
        subActivityOfStart.add(ACT_ENCRYPTION);
        dependencies.put(ACT_START, subActivityOfStart);
        JSONArray subActivityOfTranscode = new JSONArray();
        subActivityOfTranscode.add(ACT_REPORT);
        dependencies.put(ACT_ENCRYPTION, subActivityOfTranscode);
        dependencies.put(ACT_REPORT, new JSONArray());
        return dependencies;
    }

}