postgres http fdw + plv8+pg_cron 处理数据

version: "3"

services: 

  graphql-engine:

    image: hasura/graphql-engine:v1.1.0

    ports:

    - "8080:8080"

    environment:

      HASURA_GRAPHQL_DATABASE_URL: postgres://postgres:dalong@pgspider-fdw:5432/postgres

      HASURA_GRAPHQL_ENABLE_CONSOLE: "true" # set to "false" to disable console

      HASURA_GRAPHQL_ENABLED_LOG_TYPES: startup, http-log, webhook-log, websocket-log, query-log

  pgspider-fdw:

    image: dalongrong/pgspider:gzip-http-plv8

    ports: 

    - "5432:5432"

    environment: 

    - "POSTGRES_PASSWORD=dalong"

docker-compose up -d

CREATE TABLE userips (

    id SERIAL PRIMARY KEY,

    origin text

);

create extension plv8;

create extension http;

create extension pg_cron;

CREATE TYPE rec AS (origin text);

CREATE or replace FUNCTION apps() RETURNS SETOF rec AS

$$

    var ip = plv8.execute(`select content FROM http_get(‘http://httpbin.org/ip‘)`);

    return [{"origin": JSON.parse(ip[0].content).origin}]

$$

LANGUAGE plv8;

CREATE OR REPLACE FUNCTION insert_ip()

  RETURNS void AS

$$

BEGIN

   insert into userips(origin) select origin from apps();

END;

$$ LANGUAGE plpgsql;

SELECT cron.schedule(‘* * * * *‘,‘select insert_ip()‘);