traefik/pkg/server/middleware/plugins.go

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package middleware
import (
"errors"
"fmt"
"github.com/containous/traefik/v2/pkg/config/dynamic"
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"github.com/containous/traefik/v2/pkg/plugins"
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)
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// PluginsBuilder the plugin's builder interface.
type PluginsBuilder interface {
Build(pName string, config map[string]interface{}, middlewareName string) (plugins.Constructor, error)
}
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func findPluginConfig(rawConfig map[string]dynamic.PluginConf) (string, map[string]interface{}, error) {
if len(rawConfig) != 1 {
return "", nil, errors.New("plugin: invalid configuration: no configuration or too many plugin definition")
}
var pluginType string
var rawPluginConfig map[string]interface{}
for pType, pConfig := range rawConfig {
pluginType = pType
rawPluginConfig = pConfig
}
if pluginType == "" {
return "", nil, errors.New("plugin: missing plugin type")
}
if len(rawPluginConfig) == 0 {
return "", nil, fmt.Errorf("plugin: missing plugin configuration: %s", pluginType)
}
return pluginType, rawPluginConfig, nil
}