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    C++ SDK

    更新时间：2021-01-11 20:12

    我的收藏
    本页目录

    C++ SDK

    安装

    安装要求说明

    Datahub C++ SDK目前必须使用GCC 4.9.2编译，使用前请检查编译环境是否适合，确认检查通过后再安装使用。

    SDK下载

    初始化


    用户可以使用阿里云认证账号访问DataHub，并需要提供云账号AccessId和AccessKey，同时需要提供访问DataHub的服务地址。

    以下代码用于使用DataHub域名新建DataHubClient:

    1.      /* Configuration */
    2.     Account account;
    3.     account.id = "";
    4.     account.key = "=";
    6.     std::string projectName = "test_project";
    7.     std::string topicName = "test_cpp";
    8.     std::string comment = "test";
    10.     std::string endpoint = "";
    11.     Configuration conf(account, endpoint);
    13.     /* Datahub Client */
    14.     DatahubClient client(conf);

    Project操作


    项目（Project）是DataHub数据的基本组织单元,下面包含多个Topic。值得注意的是，DataHub的项目空间与MaxCompute的项目空间是相互独立的。用户在MaxCompute中创建的项目不能复用于DataHub，需要独立创建。

    创建project


    CreateProjectResult cCeateProject(string projectName, string comment);

    创建Project需要提供Project的名字和描述，Project的名字长度限制为[3,32]，必须以英文字母开头，仅允许英文字母、数字及“_”，大小写不敏感。

    • 参数
      • projectName project name
      • comment project comment
    • 示例
    1. void CreateProject()
    2. {
    3.     try
    4.     {
    5.         client.CreateProject(projectName, comment);
    6.     }
    7.     catch(DatahubException e)
    8.     {
    9.        cerr << e << endl;
    10.     }
    11. }

    删除Project


    DeleteProjectResult DeleteProject(string projectName);
    删除Project时必须保证Project中已经没有Topic。

    • 参数
      • projectName project name
    • 示例
    1. void DeleteProject()
    2. {
    3.     try
    4.     {
    5.         client.DeleteProject(projectName);
    6.     }
    7.     catch(DatahubException e)
    8.     {
    9.        cerr << e << endl;
    10.     }
    11. }

    更新Project


    UpdateProjectResult UpdateProject(string projectName, string comment);
    更新project信息，目前只支持更新comment。

    • 参数
      • projectName project name
      • comment project comment
    • 示例
      1. void UpdateProject()
      2. {
      3.   try
      4.   {
      5.       client.UpdateProject(projectName,comment);
      6.   }
      7.   catch(DatahubException e)
      8.   {
      9.      cerr << e << endl;
      10.   }
      11. }

    列出Project


    ListProjectResult ListProject();listProject
    返回的结果是ListProjectResult对象，其中包含成员projectNames,是一个包含project名字的list。

    • 示例
      1. void ListProject()
      2. {
      3.   try
      4.   {
      5.       client.ListProject();
      6.       std::cout<<listProjectResult.GetProjectNames().size()<<std::endl;
      7.   }
      8.   catch(DatahubException e)
      9.   {
      10.      cerr << e << endl;
      11.   }
      12. }

    查询Project


    GetProjectResult GetProject(string projectName);

    • 参数
      • projectName project name
    • 示例
      1. void GetProject()
      2. {
      3.   try
      4.   {
      5.      GetProjectResult projectResult = client.GetProject(projectName);
      6.      std::cout<<projectResult.GetProject()<<std::endl;
      7.      std::cout<<projectResult.GetComment()<<std::endl;
      8.      std::cout<<projectResult.GetCreator()<<std::endl;
      9.      std::cout<<projectResult.GetCreateTime()<<std::endl;
      10.      std::cout<<projectResult.GetLastModifyTime()<<std::endl;    
      11.   }
      12.   catch(DatahubException e)
      13.   {
      14.      cerr << e << endl;
      15.   }
      16. }

    Topic操作


    Topic是 DataHub 订阅和发布的最小单位，用户可以用Topic来表示一类或者一种流数据。目前支持Tuple与Blob两种类型:

    1. Blob类型Topic支持写入一块二进制数据作为一个Record
    2. Tuple类型的Topic支持类似于数据库的记录的数据，每条记录包含多个列，需要指定Record Schema，因为网络传输中，数据都是以字符串的形式发送，需要schema来转换成对应的类型。目前支持以下几种数据类型:
    类型 含义 值域
    BIGINT 8字节有符号整型 -9223372036854775807 ~ 9223372036854775807
    DOUBLE 8字节双精度浮点数 -1.0 10^308 ~ 1.0 10^308
    BOOLEAN 布尔类型 True/False或true/false或0/1
    TIMESTAMP 时间戳类型 表示到微秒的时间戳类型
    STRING 字符串，只支持UTF-8编码 单个STRING列最长允许1MB

    创建Tuple Topic


    CreateTopicResult CreateTopic(string projectName, string topicName, int shardCount, int lifeCycle, RecordType recordType, RecordSchema recordSchema, string comment);

    • 参数

      • projectName The name of the project in which you create.
      • topicName The name of the topic.
      • shardCount The initial shard count of the topic.
      • lifeCycle The expire time of the data (Unit: DAY). The data written before that time is not accessible.
      • recordType The type of the record you want to write. Now support TUPLE and BLOB.
      • recordSchema The records schema of this topic.
      • comment The comment of the topic.
    • 示例
    1. void CreateTupleTopic(){
    2.     try
    3.     {
    4.         client.CreateTopic(projectName, topicName, shardCount,lifeCycle,RecordType.TUPLE, schema,comment);
    5.     }
    6.     catch(DatahubException e)
    7.     {
    8.        cerr << e << endl;
    9.     }
    10. }

    创建Blob Topic


    CreateTopicResult CreateTopic(string projectName, string topicName, int shardCount, int lifeCycle, RecordType recordType, string comment);

    • 参数
      • projectName The name of the project in which you create.
      • topicName The name of the topic.
      • shardCount The initial shard count of the topic.
      • lifeCycle The expire time of the data (Unit: DAY). The data written before that time is not accessible.
      • recordType The type of the record you want to write. Now support TUPLE and BLOB.
      • comment The comment of the topic.
    • 示例
    1. void CreateBlobTopic()
    2. {
    3.     try
    4.     {
    5.         client.CreateTopic(projectName,topicName,shardCount,lifeCycle,RecordType.BLOB,comment);
    6.     }
    7.     catch(DatahubException e)
    8.     {
    9.        cerr << e << endl;
    10.     }
    12. }

    删除Topic


    DeleteTopicResult DeleteTopic(string projectName, string topicName);
    删除topic之前要保证topic中没有subscription和connector

    • 参数
      • projectName The name of the project in which you delete.
      • topicName The name of the topic.
    • 示例
    1. void DeleteTopic()
    2. {
    3.     try
    4.     {
    5.          ListTopicResult listTopicResult = client.ListTopic(projectName);
    6.         cout<<listTopicResult.GetTopicNames().size()<<std::endl;   
    7.     }
    8.     catch(DatahubException e)
    9.     {
    10.        cerr << e << endl;
    11.     }
    13. }

    列出Topic


    ListTopicResult ListTopic(string projectName);

    • 参数
      • projectName The name of the project in which you list.
    • 示例
    1. void ListTopic(){
    2.     try
    3.     {
    4.          ListTopicResult listTopicResult = client.ListTopic(projectName);
    5.          cout<<listTopicResult.GetTopicNames().size()<<std::endl;        
    6.     }
    7.     catch(DatahubException e)
    8.     {
    9.        cerr << e << endl;
    10.     }
    12. }

    更新Topic


    UpdateTopicResult UpdateTopic(string projectName, string topicName,int updateLifecycle, string comment);

    • 参数
      • projectName The name of the project in which you list.
      • topicName The name of the topic.
      • comment The comment to modify.
      • updateLifecycle The lifeCycle of topic
    • 示例:
    1. void GetTopic(){
    2.     try
    3.     {
    4.         client.UpdateTopic(projectName, topicName, updateLifecycle, updateProjectComment);
    5.     }
    6.     catch(DatahubException e)
    7.     {
    8.        cerr << e << endl;
    9.     }
    11. }

    查询Topic


    GetTopicResult GetTopic(string projectName, tring topicName);

    • 参数
      • projectName The name of the project in which you get.
      • topicName The name of the topic.
    • 示例
    1. void GetTopic(){
    2.     try
    3.     {
    4.         GetTopicResult getTopicResult = client.GetTopic(projectName, topicName);
    5.         cout<<getTopicResult.GetComment()<<endl;
    6.     }
    7.     catch(DatahubException e)
    8.     {
    9.        cerr << e << endl;
    10.     }
    12. }

    Shard操作


    Shard表示对一个Topic进行数据传输的并发通道，每个Shard会有对应的ID。每个Shard会有多种状态: Opening - 启动中，Active - 启动完成可服务。每个Shard启用以后会占用一定的服务端资源，建议按需申请Shard数量。

    列出Shard

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
    • 示例
    1. void ListShard()
    2. {
    3.     try
    4.     {
    5.         ListShardResult listShardResult = client.ListShard(projectName, topicName);
    7.     } 
    8.     catch(DatahubException e)
    9.     {
    10.           cerr << e << endl;
    11.     }
    12. }

    分裂Shard


    SplitShardResult splitShard(String projectName, String topicName, String shardId);
    SplitShardResult splitShard(String projectName, String topicName, String shardId, String splitKey);
    指定一个Topic中的一个状态为ACTIVE的Shard进行分裂，生成两个Shard，新Shard状态为ACTIVE，原Shard状态会变为CLOSED。可以采用默认splitKey进行分裂，也可以指定splitKey进行分裂。

    • 参数
      • projectName The name of the project
      • topicName The name of the topic.
      • shardId The shard which to split.
      • splitKey The split key which is used to split shard.
    • 示例
      1. void SplitShard()
      2. {
      3.   try
      4.   {
      5.        SplitShardResult splitShardResult = Client.SplitShard(projectName, topicName, shardId);
      6.       for (ShardEntry entry : splitShardResult.getNewShards()) 
      7.       {
      8.           std::cout << "shardId is: " << entry << std::endl;
      9.       }
      10.   }
      11.   catch(DatahubException e)
      12.   {
      13.       cerr << e << endl;
      14.   }
      15. }

    合并Shard


    合并一个Topic中两个处于ACTIVE状态的Shard,要求两个Shard的位置必须相邻。每个Shard相邻的两个Shard可以参考listShard的结果。

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • shardId The shard which to split.
      • splitKey The split key which is used to split shard.

    • 示例

      1. void MergeShard()
      2. {
      3.   try
      4.   {
      5.       MergeShardResult MergeShardResult = Client.MergeShard(projectName, topicName, shardId, adjacentShardId);
      7.   }
      8.   catch(DatahubException e)
      9.   {
      10.       cerr << e << endl;
      11.   }
      12. }

    读写数据


    状态为CLOSED和ACTIVE的shard都可以读取数据，不过只有状态为ACTIVE的shard可以写数据。

    读数据

    获取cursor


    读取Topic下的数据，需要指定对应的shard，同时需要指定数据读取的游标位置Cursor。Cursor的获取方式 有四种，分别是OLDEST, LATEST, SEQUENCE, SYSTEM_TIME。

    • OLDEST : 表示获取的cursor指向当前有效数据中时间最久远的record。
    • LATEST : 表示获取的cursor指向当前最新的record。
    • SEQUENCE : 表示获取的cursor指向该序列的record。
    • SYSTEM_TIME : 表示获取的cursor指向该大于等于该时间戳的第一条record。


    GetCursorResult GetCursor(String projectName, String topicName, String shardId, CursorType type);

    GetCursorResult GetCursor(String projectName, String topicName, String shardId, int64_t timestamp);

    • 参数

      • projectName The name of the project.
      • topicName The name of the topic.
      • shardId The id of the shard.

      • CursorType Which type used to get cursor.

        示例

        1. void GetCursor()
        2. {
        3. try
        4. {
        5.    GetCursorResult r1 = client.GetCursor(projectName, topicName, "0", OLDEST);
        6.    std::string cursor = r1.GetCursor();
        7. } 
        8. catch(DatahubException e)
        9. {
        10.    cerr << e << endl;
        11. }
        12. }


        读取数据接口

        GetRecordsResult getRecords(String projectName, String topicName, String shardId, String cursor, int limit);

    • 参数

      • projectName The name of the project.
      • topicName The name of the topic.
      • shardId The id of the shard.
      • cursor The start cursor used to read data.
      • limit Max record size to read.

    • 示例

      • 读取Tuple topic数据

        1. void GetRecord()
        2. {
        3. try
        4. {
        5.    GetRecordResult r2 = client.GetRecord(projectName, topicName, "0", cursor, 1000);
        6.    int count = r2.GetRecordCount();
        7.    std::cout << "read record count is: " << count << std::endl;
        8.    for (int i = 0; i < count; ++i)
        9.    {
        10.        const RecordResult& recordResult = r2.GetRecord(i);
        11.        for (int j = 0; j < schema.GetFieldCount(); ++j)
        12.        {
        13.            const Field& field = schema.GetField(j);
        14.            const FieldType fieldType = field.GetFieldType();
        15.            switch(fieldType)
        16.            {
        17.                case BIGINT:
        18.                    std::cout << recordResult.GetBigint(j) << std::endl;
        19.                    break;
        20.                case DOUBLE:
        21.                    printf("%.15lf\n", recordResult.GetDouble(j));
        22.                    break;
        23.                case STRING:
        24.                    std::cout << recordResult.GetString(j) << std::endl;
        25.                    break;
        26.                default:
        27.                break;
        28.            }
        29.        }
        30.    }
        32. } 
        33. catch(DatahubException e)
        34. {
        35.      cerr << e << endl;
        36. }
        37. }

        写数据

        PutRecordsResult putRecords(String projectName, String topicName, vector records,string compress);
        PutRecordsResult putRecordByShard(String projectName, String topicName, String shardId,vector records);

    • 参数

      • projectName The name of the project.
      • topicName The name of the topic.
      • shardId The id of the shard.
      • records Records list to written.
    • 示例
    1. void PutRecord()
    2. {
    3.     try{
    4.         std::vector<RecordEntry> records;
    5.         for (int32_t i = 0; i < 100; ++i)
    6.         {
    7.             RecordEntry record(schema.GetFieldCount());
    8.             record.SetShardId("0");
    9.             for (int i = 0; i < schema.GetFieldCount(); ++i)
    10.             {
    11.                 const Field& field = schema.GetField(i);
    12.                 const FieldType fieldType = field.GetFieldType();
    13.                 switch(fieldType)
    14.                 {
    15.                     case BIGINT:
    16.                            record.SetBigint(i, 1);
    17.                            break;
    18.                     case DOUBLE:
    19.                         record.SetDouble(i, 117.120799999999);
    20.                         break;
    21.                     case STRING:
    22.                         record.SetString(i, "345");
    23.                         break;
    24.                     default:
    25.                         break;
    26.                 }
    27.             }
    28.             records.push_back(record);
    29.         }
    30.     PutRecordResult put_ret0 = client.PutRecord(projectName, topicName, records, "lz4");
    31.     std::cout<<put_ret0.GetFailedRecordCount()<<std::endl;
    32.         } 
    33.     catch(DatahubException e)
    34.     {
    35.           cerr << e << endl;
    36.     }
    37. }

    Meter操作


    GetMeterInfoResult GetMeteringInfo(String projectName, String topicName, String day);
    GetMeterInfoResult GetMeteringInfo(String projectName, String topicName, String shardId);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • day the topic of date
      • shardId The id of the shard.


    示例

    1. void GetMeter()
    2. {
    3.     try
    4.     {
    5.         GetMeteringInfoResult GetMeteringInfo = Client.GetMeteringInfo(projectName, topicName, shardId);
    7.     }
    8.     catch(DatahubException e)
    9.     {
    10.           cerr << e << endl;
    11.     }
    12. }

    Subscribtion操作


    订阅服务提供了服务端保存用户消费点位的功能，只需要通过简单配置和处理，就可以实现高可用的点位存储服务。

    创建 Subscription


    CreateSubscriptionResult CreateSubscription(String projectName, String topicName, String comment);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • comment The comment of the subscription.
    • 示例
    1. void CreateSubscription()
    2. {
    3.   try
    4.   {
    5.      CreateSubscriptionResult createSubscriptionResult = client.CreateSubscription(projectName, topicName, subscriptionComment);
    7.   } 
    8.   catch(DatahubException e)
    9.   {
    10.      cerr << e << endl;
    11.   }
    12. }

    删除 Subscription


    DeleteSubscriptionResult DeleteSubscription(string projectName, string topicName, string subId);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • subId The id of the subscription.
    • 示例
    1. void DeleteSubscription() 
    2. {
    3.   try 
    4.   {
    5.       client.DeleteSubscription(projectName, topicName, subId);
    7.   } 
    8.   catch(DatahubException e)
    9.   {
    10.      cerr << e << endl;
    11.   }
    12. }

    更新 Subscription


    UpdateSubscriptionResult UpdateSubscription(string projectName, string topicName, string subId, String comment);
    更新已存在的Subscription，目前只支持更新comment。

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • subId The id of the subscription.
      • comment The comment you want to update.
    • 示例
    1. void UpdateSubscription()
    2. {
    3.     try 
    4.     {
    5.         client.UpdateSubscription(projectName, topicName, subId, SubscriptionComment);
    7.       }
    8.     catch(DatahubException e)
    9.     {
    10.         cerr << e << endl;
    11.     }
    12. }

    列出 Subscription


    ListSubscriptionResult ListSubscription(string projectName, string topicName, int pageNum, int pageSize);
    _
    listSubscription的参数pageNum和pageSize取指定范围的subscription信息，如pageNum =1, pageSize =10，获取1-10个subscription； pageNum =2, pageSize =5则获取6-10的subscription。

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • pageNum The page number used to list subscriptions.
      • pageSize The page size used to list subscriptions.
    • 示例代码
    1.  void ListSubscription() 
    2.  {
    3.     try 
    4.     {
    5.         ListSubscriptionResult subscriptionResult = client.ListSubscription(projectName, topicName, 1, 20, subId);
    7.     }  
    8.     catch(DatahubException e)
    9.     {
    10.         cerr << e << endl;
    11.     }
    12. }

    查询 Subscription

    GetSubscriptionResult GetSubscription(string projectName, string topicName, string subId);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • subId The id of the subscription.
    1. void GetSubscription() 
    2. {
    3.     try 
    4.     {
    5.         GetSubscriptionResult  getSubscriptionResult = client.GetSubscription(projectName, topicName, subId);
    6.         std::cout << getSubscriptionResult.GetComment() << std::endl;
    7.     }  
    8.     catch(DatahubException e)
    9.     {
    10.         cerr << e << endl;
    11.     }
    12. }

    更新 Subscription 状态


    UpdateSubscriptionStateResult UpdateSubscriptionState(string projectName, string topicName, string subId, SubscriptionState state);
    _
    Subscription有两种状态，OFFLINE和ONLINE，分别表示离线和在线。

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • subId The id of the subscription.
      • state The state you want to change.
    • 示例
    1.  void UpdateSubscriptionState()
    2.  {
    3.     try 
    4.     {
    5.         client.UpdateSubscriptionState(projectName, topicName, subId, SubscriptionState::OFFLINE);
    6.         std::cout << getSubscriptionResult.GetComment() << std::endl;
    8.     } 
    9.     catch(DatahubException e)
    10.     {
    11.         cerr << e << endl;
    12.     }
    13. }

    offset 操作


    一个subscription创建后，初始状态是未消费的，要使用subscription服务提供的点位存储功能，需要进行一些offset操作。

    初始化offset


    OpenSubscriptionOffsetSessionResult InitSubscriptionOffsetSession(string projectName, string topicName, string subId, StringVec shardIds);


    openSubscriptionSession只需要初始化一次，再次调用会重新生成一个消费sessionId，之前的session会失效，无法commit点位。

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • subId The id of the subscription.
      • shardIds The id list of the shards.

    示例

    1.  void InitSubscriptionOffsetSession()
    2.  {
    3.     try 
    4.     {
    5.         OpenSubscriptionOffsetSessionResult offsetSessionResult =
    6.         client.InitSubscriptionOffsetSession(projectName, topicName, createSubscriptionResult.GetSubId(), shardIds);
    7.         std::cout << offsetSessionResult.GetOffsets().size() << std::endl;
    9.     } 
    10.     catch(DatahubException e)
    11.     {
    12.         cerr << e << endl;
    13.     }
    14. }

    获取 offset


    GetSubscriptionOffsetResult GetSubscriptionOffset(string projectName, string topicName, string subId, StringVec shardIds);
    _
    getSubscriptionOffset返回结果是GetSubscriptionOffsetResult对象

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • subId The id of the subscription.
      • shardIds The id list of the shards.
    • 示例
    1. //获取点位
    2. void GetSubscriptionOffset() 
    3. {
    4.     try 
    5.     {
    6.         GetSubscriptionOffsetResult  getSubscriptionOffsetResult =client.GetSubscriptionOffset(projectName, topicName,subId, shardIds);
    7.         std::cout << getSubscriptionOffsetResult.GetOffsets().size() << std::endl;
    8.         std::cout << getSubscriptionResult.GetComment() << std::endl;
    10.     }  
    11.     catch(DatahubException e)
    12.     {
    13.         cerr << e << endl;
    14.     }
    15. }

    重置 offset


    ResetSubscriptionOffsetResult ResetSubscriptionOffset(string projectName, string topicName, string subId, Map offsets);

    重置点位可以将消费点位设置到某个时间点，如果在这个时间点有多个record，那么点位会设置到该时间点的第一条record的位置。重置点位在修改点位信息的同时更新versionId，运行中的任务在使用旧的versionId来提交点位时会收到SubscriptionOffsetResetException，通过getSubscriptionOffset接口可以拿到新的versionId。

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • subId The id of the subscription.
      • offsets The offset map of shards.

    示例:

    1. void ResetSubscriptionOffset() 
    2. {
    3.     try 
    4.     {
    5.         client.ResetSubscriptionOffset(projectName, topicName, SubId, resetSubscriptionOffsets);
    6.     }  
    7.     catch(DatahubException e)
    8.     {
    9.         cerr << e << endl;
    10.     }
    11. }


    Connector 操作


    DataHub Connector是把DataHub服务中的流式数据同步到其他云产品中的功能，目前支持将Topic中的数据实时/准实时同步到MaxCompute(ODPS)、Oss、RDS&Mysql、TableStore、Oss、ElasticSearch、函数计算中。用户只需要向DataHub中写入一次数据，并在DataHub服务中配置好同步功能，便可以在其他云产品中使用这份数据。

    创建 Connector


    CreateConnectorResult CreateConnector(string projectName, string topicName, ConnectorType connectorType, List columnFields, SinkConfig config);
    CreateConnectorResult createConnector(String projectName, String topicName, ConnectorType connectorType, int64_t sinkStartTime, StringVec columnFields, SinkConfig config);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • ConnectorType The type of connector which you want create.
      • columnFields Which fields you want synchronize.
      • sinkStartTime Start time to sink from datahub. Unit: Ms
      • config Detail config of specified connector type.
    • ODPS示例
    1. void  CreateConnector() 
    2. {
    3.     SinkOdpsConfig config = new SinkOdpsConfig() {{
    4.         setEndpoint(odps_endpoint);
    5.         setProject(odps_project);
    6.         setTable(odps_table);
    7.         setAccessId(odps_accessId);
    8.         setAccessKey(odps_accessKey);
    9.         setPartitionMode(PartitionMode.SYSTEM_TIME);
    10.         setTimeRange(60);
    11.     }};
    12.     //设置分区格式
    13.     SinkOdpsConfig.PartitionConfig partitionConfig = new SinkOdpsConfig.PartitionConfig() {{
    14.         addConfig("ds", "%Y%m%d");
    15.         addConfig("hh", "%H");
    16.         addConfig("mm", "%M");
    17.     }};
    18.     config.setPartitionConfig(partitionConfig);
    19.     try 
    20.     {
    21.         CreateConnectorResult  connectorResult = client.CreateConnector(projectName, topicName, sdk::ConnectorType::SINK_ODPS, columnFields, config);
    22.         std::cout<<"Odps ConnectorId:" + connectorResult.GetConnectorId()<<std::endl;
    23.     } 
    24.     catch(DatahubException e)
    25.     {
    26.         cerr << e << endl;
    27.     }
    28. }

    删除 Connector


    DeleteConnectorResult DeleteConnector(string projectName, string topicName, string connectorId);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • connectorId the connectorId of topic
    • 示例
    1. void DeleteConnector() 
    2. {
    3.     try 
    4.     {
    5.          client.DeleteConnector(projectName, topicName, connectorId);
    6.       } 
    7.     catch(DatahubException e)
    8.     {
    9.           cerr << e << endl;
    10.     }
    11. }

    查询 Connector


    GetConnectorResult getConnectorResult (projectName,topicName,ConnectorType.SINK_ODPS);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • ConnectorType The type of connector which you want get.
    • 示例
    1. void GetConnector() 
    2. {
    3.     try 
    4.     {
    5.         GetConnectorResult GetConnectorResult = client.GetConnector(projectName, topicName, connectorId);
    6.     } 
    7.     catch(DatahubException e)
    8.     {
    9.         cerr << e << endl;
    10.     }
    11. }

    更新 Connector


    UpdateConnectorResult UpdateConnector(string projectName, string topicName, string connectorId,SinkConfig config);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • connectorId The connectorId of topic
      • config Detail config of specified connector type.
    • 示例
    1.  void UpdateConnector() 
    2.  {
    3.     SinkOdpsConfig updateConfig;
    4.     updateConfig.SetEndpoint("ODPS_ENDPOINT");
    5.     updateConfig.SetProject("ODPS_PROJECT");
    6.     updateConfig.SetTable("ODPS_TABLE");
    7.     updateConfig.SetAccessId("ODPS_ACCESSID");
    8.     updateConfig.SetAccessKey("ODPS_ACCESSKEY");
    9.     updateConfig.SetPartitionMode(sdk::PartitionMode::EVENT_TIME);
    10.     updateConfig.SetTimeRange(30);
    11.     updateConfig.SetPartitionConfig(updatePartitionConfig);
    12.        try 
    13.     {
    14.          GetConnectorResult updateConnectorResult = client.GetConnector(projectName, topicName, connectorId);
    15.       } 
    16.     catch(DatahubException e)
    17.     {
    18.         cerr << e << endl;
    19.     }
    20. }

    更新 Connector state


    UpdateConnectorStateResult UpdateConnectorState(string projectName, string topicName, string connectorId, ConnectorState connectorState);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • connectorId The connectorId of topic
      • connectorState The state of the connector. Support: ConnectorState.PAUSED, ConnectorState.RUNNING.
    • 示例
    1.  void UpdateConnectorState() 
    2.  {
    3.     try 
    4.     {
    5.         client.UpdateConnectorState(projectName, topicName, connectorId, sdk::ConnectorState::CONNECTOR_STOPPED);
    6.     } 
    7.     catch(DatahubException e)
    8.     {
    9.         cerr << e << endl;
    10.     }
    11.   }

    更新 Connector offset


    UpdateConnectorOffsetResult UpdateConnectorOffset(string projectName, String topicName, ConnectorType connectorType, String shardId, ConnectorOffset offset);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • ConnectorType The type of connector.
      • shardId The id of the shard. If shardId is null, then update all shards offset.
      • offset The connector offset.
    • 示例
    1. void UpdateConnectorOffset() 
    2. {
    3.     ConnectorOffset offset = new ConnectorOffset() {{
    4.         setSequence(10);
    5.         setTimestamp(1000);
    6.     }};
    7.     try 
    8.     {
    9.         //更新Connector点位需要先停止Connector
    10.         Client.UpdateConnectorState(projectName, topicName, connectorId, ConnectorState.STOPPED);
    11.            Client.UpdateConnectorOffset(projectName, topicName, connectorId, connectorOffset1);
    12.         Client.UpdateConnectorState(projectName, topicName, connectorId, ConnectorState.RUNNING);
    13.     } 
    14.     catch(DatahubException e){
    15.           cerr << e << endl;
    16.     }
    17. }

    列出 Connector

    ListConnectorResult ListConnector(string projectName, string topicName);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
    • 示例
    1. void ListConnector() {
    2.   try {
    3.        const ListConnectorResult& listConnectorResult = client.ListConnector(projectName, topicName);
    4.         std::cout << listConnectorResult.GetConnectorIds().size() << std::endl;
    6.         std::string connectorId = listConnectorResult.GetConnectorIds()[0];
    7.   } catch(std::exception& e){
    8.           cerr << e << endl;
    9.     }
    10.  }

    查询 Connector Shard 状态

    ConnectorShardStatusEntry GetConnectorShardStatusByShard(string projectName, string topicName, string connectorId,string shardId);


    ConnectorShardStatusEntry GetConnectorShardStatus(string projectName, string topicName, string connectorId);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • shardId The id of the shard.
      • connectorId The connectorId of topic
    • 示例
    1.  void GetConnectorShardStatusByShard() {
    2.     try {
    3.          const GetConnectorShardStatusByShardResult& shardStatusByShardResult = client.GetConnectorShardStatusByShard(projectName, topicName, connectorId, "0");
    5.     sdk::ConnectorShardStatusEntry statuUpdateSubscriptionsEntry = shardStatusByShardResult.GetStatusEntry();
    7.     std::cout << (statusEntry.GetState()>= sdk::ConnectorShardState::CONTEXT_HANG && statusEntry.GetState() <= sdk::ConnectorShardState::CONTEXT_FINISHED) << std::endl;
    8.   }  catch(std::exception& e){
    9.           cerr << e << endl;
    10.     }
    11. }

    重启 Connector

    ReloadConnectorResult ReloadConnector(string projectName, string topicName, string connectorId);


    ReloadConnectorResult ReloadConnector(string projectName, string topicName, string connectorId, string shardId);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • shardId The id of the shard.
      • connectorId The connectorId of topic
    • 示例
    1.  void ReloadConnector() {
    2.     try {
    3.     client.ReloadConnector(projectName, topicName, connectorId);
    5.   }  catch(std::exception& e){
    6.           cerr << e << endl;
    7.     }
    8. }

    查询 Connector 完成时间

    GetConnectorDoneTimeResult GetConnectorDoneTime(string projectName, string topicName, string connectorId);

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • connectorId The connectorId of topic
    • 示例
    1.  void GetDoneTime() {
    2.     try {
    3.         const GetConnectorDoneTimeResult& doneTimeResult = client.GetConnectorDoneTime(projectName, topicName, connectorId);
    4.         std::cout << doneTimeResult.GetDoneTime() << std::endl;
    6.   }  catch(std::exception& e){
    7.           cerr << e << endl;
    8.     }
    10. }

    添加新的Field

    AppendConnectorFieldResult AppendConnectorField(string projectName, string topicName, string connectorId, String fieldName);


    可以给Connector添加新的field，但是需要MaxCompute表中存在和datahub中对应的列。

    • 参数
      • projectName The name of the project.
      • topicName The name of the topic.
      • fieldName The field to append. Field value must allow null.
      • connectorId The connectorId of topic
    • 示例
    1.  void AppendConnectorField() {
    2.     try {
    3.         client.AppendConnectorField(projectName, topicName, connectorId, fieldName2);
    5.   } catch(std::exception& e){
    6.           cerr << e << endl;
    7.     }
    9. }