apache SeaTunnel 从PostgreSQL读取数据然后写入到Elasticsearch写一个配置的例子

以下是一个Apache SeaTunnel配置的例子，用于将数据从PostgreSQL读取并写入Elasticsearch：

{
  "sources": [
    {
      "name": "postgres_source",
      "type": "postgres",
      "config": {
        "host": "localhost",
        "port": 5432,
        "username": "postgres",
        "password": "password",
        "database": "my_database",
        "table": "my_table",
        "columns": [
          {"name": "id", "type": "integer"},
          {"name": "name", "type": "string"},
          {"name": "age", "type": "integer"}
        ]
      }
    }
  ],
  "destinations": [
    {
      "name": "es_destination",
      "type": "elasticsearch",
      "config": {
        "hosts": ["http://localhost:9200"],
        "index": "my_index",
        "type": "my_type",
        "id_field": "id",
        "bulk_size": 100,
        "bulk_interval": 1000
      }
    }
  ],
  "transformations": [
    {
      "type": "rename",
      "config": {
        "from": "name",
        "to": "full_name"
      }
    }
  ],
  "mappings": [
    {
      "source": "postgres_source",
      "destination": "es_destination",
      "transformations": [
        {"type": "rename", "config": {"from": "name", "to": "full_name"}},
        {"type": "convert", "config": {"from": "id", "to": "string"}},
        {"type": "convert", "config": {"from": "age", "to": "string"}}
      ]
    }
  ]
}

这个配置文件定义了一个名为“postgres_source”的PostgreSQL源，它从“my_database”数据库中的“my_table”表读取数据。源有三列：“id”，“name”和“age”。

此外，配置文件还定义了一个名为“es_destination”的Elasticsearch目标。目标是将数据写入名为“my_index”的索引中，并在索引中创建一个名为“my_type”的类型。目标使用“id”列作为文档ID，并每100毫秒将100个文档作为一个批次写入Elasticsearch。

配置文件还包括一个转换，将“name”列重命名为“full_name”。

最后，配置文件定义了一个映射，将数据从“postgres_source”源转换为“es_destination”目标。映射使用转换将“name”列重命名为“full_name”，并将“id”和“age”列转换为字符串类型