traefik.go:命令traefik错误:未定义: xxx

Question

我正在尝试构建一个Traefik插件，并在基于https://github.com/traefik/plugindemo#local-mode的本地模式下进行测试。

现在这个插件什么也不做，只返回"Hello“。

以下是我的文件结构：

​

​

在traefik/plugins-local/src/github.com/Hongbo-Miao/traefik-plugin-disable-graphql-introspection文件夹中，我有：

.traefik.yml

entryPoints:
  graphql-server-entrypoint:
    address: :9000
api:
  insecure: true
  dashboard: true
providers:
  file:
    filename: dynamic_conf.yaml
log:
  level: DEBUG
experimental:
  localPlugins:
    traefik-plugin-disable-graphql-introspection:
      modulename: github.com/Hongbo-Miao/traefik-plugin-disable-graphql-introspection

go.mod

module github.com/Hongbo-Miao/traefik-plugin-disable-graphql-introspection

go 1.17

main.go

package main

import (
    "context"
    "net/http"
)

type Config struct{}

func CreateConfig() *Config {
    return &Config{}
}

type DisableGraphQLIntrospection struct {
    next http.Handler
    name string
}

func New(ctx context.Context, next http.Handler, config *Config, name string) (http.Handler, error) {
    return &DisableGraphQLIntrospection{
        next: next,
        name: name,
    }, nil
}

func (a *DisableGraphQLIntrospection) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
    rw.Write([]byte("hello"))
}

在根文件夹中，我有

traefik.yaml

entryPoints:
  graphql-server-entrypoint:
    address: :9000
api:
  insecure: true
  dashboard: true
providers:
  file:
    filename: dynamic_conf.yaml
log:
  level: DEBUG
experimental:
  localPlugins:
    traefik-plugin-disable-graphql-introspection:
      modulename: github.com/Hongbo-Miao/traefik-plugin-disable-graphql-introspection

dynamic_conf.yaml

http:
  routers:
    graphql-server-entrypoint:
      service: graphql-server-service
      entrypoints:
        - graphql-server-entrypoint
      rule: Host(`localhost`)
      middlewares:
        - my-traefik-plugin-disable-graphql-introspection
  services:
    graphql-server-service:
      loadBalancer:
        servers:
          - url: http://localhost:5000/
  middlewares:
    my-traefik-plugin-disable-graphql-introspection:
      plugin:
        traefik-plugin-disable-graphql-introspection:
          headers:
            Foo: Bar

我有一个GraphQL服务器在http://localhost:5000运行

我要它通过Taefik被http://localhost:9000曝光

但是，当我跑的时候

traefik --configfile=traefik.yaml

在根文件夹中，我得到了错误

traefik.go:79:命令traefik错误:未能执行；1:28:未定义: traefik_plugin_disable_graphql_introspection 119

Traefik插件由嵌入式Go解释器叶芝实时执行。

这个错误似乎是由Yaegi造成的，但是，我不知道如何调试。

任何导游都将不胜感激！

Answer 1

收到汤姆·穆拉德的答复，谢谢你！https://github.com/traefik/plugindemo/issues/15#issuecomment-1123741949

您的错误意味着Yaegi无法找到New包的traefik_plugin_disable_graphql_introspection函数。因此，您可以看出，Yaegi找到了您的插件，加载了它，但是找不到包。要解决这个问题，您需要将插件代码中的行package main更改为package traefik_plugin_disable_graphql_introspection。

在将package main更改为main.go文件中的package traefik_plugin_disable_graphql_introspection之后，它现在开始工作了！