node_http_req.md

Http Req Node HTTP请求节点

用于发起 http 请求的节点，用于 webhook 等场景

Node for initiating HTTP requests, used for scenarios such as webhooks.

基本使用方式 | Basic Usage

	state := ograph.NewState()
	state.Set("time", time.Now())

	p := ograph.NewPipeline()

	e := ograph.NewElement("req").UseFactory(ogimpl.HttpReq).
		Params("Method", "POST").
		Params("Url", "http://localhost:8080/ping").
		// Render body as:
		// Send-Time: 2024-08-03 10:10:20.0873372 +0800 CST m=+0.002574001
		Params("BodyTpl", `Send-Time: {{GetState "time"}}`)

	p.Register(e).Run(context.Background(), state)

参数 | Parameter

参数名(Name)	必需(Required)	含义(Meaning)	类型(Type)	示例(Example)
Method	✔	http method	string	POST
Url	✔	http url	string	http://localhost:8080/ping
ContentType	✗	content-type	string	application/json
Body	✗	request body	string	hello
BodyTpl	✗	body template	string	hello, i am {{GetState "name"}}

小贴示 | Tips

目前仅支持 GET, POST 两种请求方法。

Currently supports only GET and POST request methods.

使用模板渲染请求体时，可以使用 GetState 函数提取执行状态值。要求这个状态值是可以公开访问的（即 key 需要为 string 类型，而非私有类型）。

When rendering the request body with a template, the GetState function can be used to extract the execution state values. The state value must be publicly accessible (i.e., the key needs to be of string type, not a private type).