تدفق الوسائط

/***********
This is a demo program to create media flow and run media flow jobs.
This requires the latest java SDK of OCI.
Takes input of the prefix name for the output files.
This is intended for a demonstration only and not for Production usage.
************/

/***********
1. Accept User Input of prefix for the outputs.
2. Create Media Client. 
3. Create Tasks.
4. Create Media Workflow.
5. Create Media Workflow Job.
************/


import com.oracle.bmc.auth.InstancePrincipalsAuthenticationDetailsProvider;
import com.oracle.bmc.auth.AuthenticationDetailsProvider;
import com.oracle.bmc.auth.ConfigFileAuthenticationDetailsProvider;
import com.oracle.bmc.mediaservices.MediaServicesClient;
import com.oracle.bmc.mediaservices.*;
import com.oracle.bmc.mediaservices.model.MediaWorkflowTask;
import com.oracle.bmc.mediaservices.model.CreateMediaWorkflowDetails;
import com.oracle.bmc.mediaservices.responses.CreateMediaWorkflowResponse;
import com.oracle.bmc.mediaservices.model.MediaWorkflow;
import com.oracle.bmc.mediaservices.requests.*;
import com.oracle.bmc.mediaservices.model.CreateMediaWorkflowJobDetails;
import com.oracle.bmc.mediaservices.model.CreateMediaWorkflowJobByIdDetails;
import com.oracle.bmc.mediaservices.responses.CreateMediaWorkflowJobResponse;
import com.oracle.bmc.mediaservices.model.MediaWorkflowJob;
import org.json.simple.*; 
import org.json.simple.parser.*;
import java.util.Collections;
import java.util.*;
import java.util.Scanner;

public class MediaflowDemoApp {
    // Get User Input
    public static String getUserInput(){
        MediaflowDemoApp.printString("Enter a name for the prefix of files:");
        Scanner input = new Scanner(System.in);
        String prefixInput = input.nextLine();
        input.close();
        return prefixInput;
    }
    // Json String to Json Object
    public static JSONObject createJSONObject(String jsonString){
        JSONObject  jsonObject=new JSONObject();
        JSONParser jsonParser=new  JSONParser();
        if ((jsonString != null) && !(jsonString.isEmpty())) {
            try {
                jsonObject=(JSONObject) jsonParser.parse(jsonString);
            } catch (org.json.simple.parser.ParseException e) {
                e.printStackTrace();
            }
        }
        return jsonObject;
    }
    // Print Function
    public static void printString(Object stringtoPrint){
        System.out.println(stringtoPrint);
    }
    // Create Media Service Client.
    public static MediaServicesClient connectMediaService(){
        InstancePrincipalsAuthenticationDetailsProvider provider = InstancePrincipalsAuthenticationDetailsProvider.builder().build();
        MediaServicesClient mediaClient =  new MediaServicesClient(provider);
        // User Principal
        // Read config from the profile DEFAULT in the file "~/.oci/config". You can switch to different profile.
        // AuthenticationDetailsProvider authenticationDetailsProvider = new ConfigFileAuthenticationDetailsProvider(PROFILE_DEFAULT);
        // MediaServicesClient mediaClient = MediaServicesClient.builder().build(authenticationDetailsProvider);
        MediaflowDemoApp.printString("Media Client Instantiated");
        return mediaClient;
    }
    // Close Media Service Client
    public static void closeMediaService(MediaServicesClient mc){
        mc.close();
        MediaflowDemoApp.printString("Media Client Closed");
    }

    // Create Tasks 
    // Tasks are discrete steps in the workflow.
    public static List<MediaWorkflowTask> createTasks(JSONObject arg0,JSONObject arg1,JSONObject arg2,JSONObject arg3,JSONObject arg4){
        long version = 1;
        List<MediaWorkflowTask> task = new ArrayList<MediaWorkflowTask>();
        List<String> typeGetFiles = new ArrayList<String>();
        List<String> typeTranscode = new ArrayList<String>();
        List<String> typeThumbnail = new ArrayList<String>();
        typeGetFiles.add("getFiles");
        typeTranscode.add("transcode1");
        typeThumbnail.add("thumbnail");
        task.add(MediaWorkflowTask.builder().type("getFiles").version(version).key("getFiles").prerequisites(Collections.emptyList()).parameters(arg0).build());
        task.add(MediaWorkflowTask.builder().type("transcribe").version(version).key("transcribe").prerequisites(typeGetFiles).parameters(arg4).build());
        task.add(MediaWorkflowTask.builder().type("transcode").version(version).key("transcode1").prerequisites(typeGetFiles).parameters(arg1).build());
        task.add(MediaWorkflowTask.builder().type("thumbnail").version(version).key("thumbnail").prerequisites(typeTranscode).parameters(arg2).build());
        task.add(MediaWorkflowTask.builder().type("putFiles").version(version).key("PutFiles1").prerequisites(typeThumbnail).parameters(arg3).build());
        return task;
    }
    // Create Media Workflow.
    public static MediaWorkflow createMediaWorkflow(MediaServicesClient mc, List<MediaWorkflowTask> tasks, JSONObject parameters,String compartment_id){
        CreateMediaWorkflowRequest  request = CreateMediaWorkflowRequest.builder().createMediaWorkflowDetails(CreateMediaWorkflowDetails.builder().displayName("test-java-sdk").compartmentId(compartment_id).tasks(tasks).parameters(parameters).build()).build();
        CreateMediaWorkflowResponse response = mc.createMediaWorkflow(request);
        MediaWorkflow mediaflow = response.getMediaWorkflow();
        return mediaflow;
    }
    // Create Media Workflow Job
    public static MediaWorkflowJob createWorkflowJob(MediaServicesClient mc, MediaWorkflow mediaflow, String prefixInput, JSONObject parameters, String compartment_id){
        String mediaWorkflowId = mediaflow.getId();
        CreateMediaWorkflowJobRequest request = CreateMediaWorkflowJobRequest.builder().createMediaWorkflowJobDetails(CreateMediaWorkflowJobByIdDetails.builder().displayName("test-java-sdk-job").compartmentId(compartment_id).mediaWorkflowId(mediaWorkflowId).parameters(parameters).build()).build();
        CreateMediaWorkflowJobResponse response = mc.createMediaWorkflowJob(request);
        MediaWorkflowJob mediaflowJob = response.getMediaWorkflowJob();
        return mediaflowJob;
    }

    public static void main(String[] args) {

        // **Variable Declarations** //
        String compartment_id = "ocid1.compartment.oc1..aaaaaaaabhuut4zoztxlfneotrwuauqt5wjhmj4kxaka6ajme4ipxqlcwv6a";
        String src_bucket = "test";
        String dst_bucket = "test";
        String namespace = "test";
        String src_video = "test";
        String prefix_input = "test";
        
        //* Task Parameters *//
        String getobjectParameters = "{\"taskParameters\": [{\"storageType\": \"objectStorage\",\"target\": \"getFiles/${/input/objectName}\",\"namespaceName\": \"${/input/namespaceName}\",\"bucketName\": \"${/input/bucketName}\",\"objectName\": \"${/input/objectName}\"}]}";
        String transcodeParameters = "{ \"transcodeType\": \"standardTranscode\", \"standardTranscode\": { \"input\": \"${/getFiles/taskParameters/0/target}\", \"outputPrefix\": \"${/transcode/outputPrefix}\", \"videoCodec\": \"h264\", \"audioCodec\": \"aac\", \"packaging\": { \"packageType\": \"hls\", \"segmentLength\": 6 }, \"ladder\": [ { \"size\": { \"height\": 1080, \"resizeMethod\": \"scale\" } }, { \"size\": { \"height\": 720, \"resizeMethod\": \"scale\" } }, { \"size\": { \"height\": 480, \"resizeMethod\": \"scale\" } }, { \"size\": { \"height\": 360, \"resizeMethod\": \"scale\" } } ] } }";
        String thumbnailParameters = "{ \"thumbnails\": { \"input\": \"${/getFiles/taskParameters/0/target}\", \"frameSelectors\": [ { \"namePrefix\": \"thumb\", \"format\": \"jpg\", \"sizes\": [ { \"width\": 390 }, { \"width\": 196 } ], \"clipImagePicker\": { \"percentList\": { \"pickList\": [ 10, 20, 30 ] } } } ] } }";
        String finaltaskParameters = "{ \"taskParameters\": [ { \"namespaceName\": \"${/output/namespaceName}\", \"bucketName\": \"${/output/bucketName}\", \"source\": \"${/transcode/outputPrefix}*.m3u8\", \"objectName\": \"${/output/objectNamePath}${/transcode/outputPrefix}\", \"assetCompartmentId\": \"${/output/assetCompartmentId}\", \"registerMetadata\": true }, { \"namespaceName\": \"${/output/namespaceName}\", \"bucketName\": \"${/output/bucketName}\", \"source\": \"master.m3u8\", \"objectName\": \"${/output/objectNamePath}${/transcode/outputPrefix}-master.m3u8\", \"assetCompartmentId\": \"${/output/assetCompartmentId}\", \"registerMetadata\": true }, { \"namespaceName\": \"${/output/namespaceName}\", \"bucketName\": \"${/output/bucketName}\", \"source\": \"*.fmp4\", \"objectName\": \"${/output/objectNamePath}\", \"assetCompartmentId\": \"${/output/assetCompartmentId}\", \"registerMetadata\": true }, { \"namespaceName\": \"${/output/namespaceName}\", \"bucketName\": \"${/output/bucketName}\", \"source\": \"*.${/thumbnail/thumbnails/frameSelectors/0/format}\", \"objectName\": \"${/output/objectNamePath}${/transcode/outputPrefix}-\", \"assetCompartmentId\": \"${/output/assetCompartmentId}\", \"registerMetadata\": true } ] }";
        String transcibeParmeters = "{ \"inputVideo\": \"${/getFiles/taskParameters/0/target}\", \"outputAudio\": \"${/output/objectNamePath}${/transcode/outputPrefix}.wav\", \"outputBucketName\": \"${/output/bucketName}\", \"outputNamespaceName\": \"${/output/namespaceName}\", \"outputTranscriptionPrefix\": \"${/output/objectNamePath}${/transcode/outputPrefix}\", \"transcriptionJobCompartment\": \"${/output/assetCompartmentId}\", \"waitForCompletion\" : true }";
        String mediaworkflowParameters = "{ \"input\": { \"objectName\": \"${/video/srcVideo}\", \"bucketName\": \"${/video/srcBucket}\", \"namespaceName\": \"${/video/namespace}\" }, \"output\": { \"bucketName\": \"${/video/dstBucket}\", \"namespaceName\": \"${/video/namespace}\", \"assetCompartmentId\": \"${/video/compartmentID}\", \"objectNamePath\": \"sdk_test/${/input/objectName}/\" }, \"transcode\": { \"outputPrefix\": \"${/video/outputPrefixName}\" } }";
        String mediaflowjobParameters = "{ \"video\": { \"srcBucket\": \"" + src_bucket+ "\", \"dstBucket\": \"" +dst_bucket+ "\", \"namespace\": \"" +namespace+ "\", \"compartmentID\": \""+compartment_id+"\", \"srcVideo\": \""+src_video+"\", \"outputPrefixName\" : \""+prefix_input+"\" } }";
        //* Json Objects of the task parameters *//
        JSONObject getobjectParametersJson = MediaflowDemoApp.createJSONObject(getobjectParameters);
        JSONObject transcodeParametersJson = MediaflowDemoApp.createJSONObject(transcodeParameters);
        JSONObject thumbnailParametersJson = MediaflowDemoApp.createJSONObject(thumbnailParameters);
        JSONObject finaltaskParametersJson = MediaflowDemoApp.createJSONObject(finaltaskParameters);
        JSONObject transcibeParmetersJson = MediaflowDemoApp.createJSONObject(transcibeParmeters);
        JSONObject mediaworkflowParametersJson = MediaflowDemoApp.createJSONObject(mediaworkflowParameters);
        JSONObject mediaflowjobParametersJson = MediaflowDemoApp.createJSONObject(mediaflowjobParameters);
        
        /* Debug JSON Prints
        MediaflowDemoApp.printString(getobjectParametersJson);
        MediaflowDemoApp.printString(transcodeParametersJson);
        MediaflowDemoApp.printString(thumbnailParametersJson);
        MediaflowDemoApp.printString(finaltaskParametersJson);
        MediaflowDemoApp.printString(transcibeParmetersJson);
        MediaflowDemoApp.printString(mediaworkflowParametersJson);
        MediaflowDemoApp.printString(mediaflowjobParametersJson);*/
        
        // Get User Input
        String prefixInput = MediaflowDemoApp.getUserInput();
        // Create the tasks for mediaflow
        List<MediaWorkflowTask> tasks = MediaflowDemoApp.createTasks(getobjectParametersJson,transcodeParametersJson,thumbnailParametersJson,finaltaskParametersJson,transcibeParmetersJson);
        // Connect to media services 
        MediaServicesClient mediaClient = MediaflowDemoApp.connectMediaService();
        // Create MediaWorkFlow 
        MediaWorkflow mediaflow = MediaflowDemoApp.createMediaWorkflow(mediaClient, tasks, mediaworkflowParametersJson, compartment_id);
        // Prints MediaWorkflow OCID
        MediaflowDemoApp.printString(mediaflow.getId());
        // Create the Workflow Job
        MediaWorkflowJob mediaflowJob = MediaflowDemoApp.createWorkflowJob(mediaClient, mediaflow, prefixInput, mediaflowjobParametersJson, compartment_id);
        // Print Workflow Job ID
        MediaflowDemoApp.printString(mediaflowJob.getId());
        // Finally Close the Media Client
        MediaflowDemoApp.closeMediaService(mediaClient);
    }
}