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  • hasura graphql 集成pipelinedb测试

    实际上因为pipelinedb 是原生支持pg的,所以应该不存在太大的问题,以下为测试

    使用doker-compose 运行

    配置

    • docker-compose 文件
    version: '3.6'
    services:
      postgres:
        image: tkanos/pipelinedb_kafka
        ports:
        - "5432:5432"
      graphql-engine:
        image: hasura/graphql-engine:v1.0.0-alpha06
        ports:
        - "8080:8080"
        depends_on:
        - "postgres"
        environment:
        - "POSTGRES_PASSWORD:pipeline"
        command: >
          /bin/sh -c "
          graphql-engine --database-url postgres://pipeline:pipeline@postgres:5432/pipeline serve --enable-console;
          "
    volumes:
      db_data:
    • 说明
      主要是进行pipelinedb 的添加以及graphql-engine 的连接pg的配置

    启动&&运行

    • 启动
    docker-compose up -d
    • 效果

    添加pipelinedb 数据

    stream 操作

    • 创建stream
    CREATE STREAM stream_test1 (x integer, y integer,z text);
    • 创建 CONTINUOUS
    CREATE CONTINUOUS VIEW v_sum as select sum( x + y ) FROM stream_test1;
    CREATE CONTINUOUS VIEW V_GROUP AS SELECT count(*) as coun,x,y,z FROM stream_test1 GROUP BY x,y,z;
    • 插入数据
    INSERT INTO stream_test1(x,y,z) VALUES(1,2,'A'),(3,4,'B'),(5,6,'C'),(7,8,'D'),(1,2,'A');
    • 查询
    select * from v_sum;
    select * from v_group;

    添加graphql table

    • 查看pipelinedb 系统创建的表
    • 添加 graphql 支持
    • 数据查询

    说明

    结合起来使用还是很方便的,即有hasura引擎的简单,同时集成了pipelinedb的stream 特性,很好很强大

    参考资料

    https://github.com/hasura/graphql-engine
    http://docs.pipelinedb.com/installation.html

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  • 原文地址:https://www.cnblogs.com/rongfengliang/p/9535967.html
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