60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
package middleware
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import (
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"context"
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"errors"
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"net/http"
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"github.com/opentracing/opentracing-go/ext"
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"github.com/traefik/traefik/v3/pkg/config/dynamic"
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"github.com/traefik/traefik/v3/pkg/plugins"
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"github.com/traefik/traefik/v3/pkg/tracing"
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)
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// PluginsBuilder the plugin's builder interface.
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type PluginsBuilder interface {
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Build(pName string, config map[string]interface{}, middlewareName string) (plugins.Constructor, error)
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}
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func findPluginConfig(rawConfig map[string]dynamic.PluginConf) (string, map[string]interface{}, error) {
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if len(rawConfig) != 1 {
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return "", nil, errors.New("invalid configuration: no configuration or too many plugin definition")
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}
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var pluginType string
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var rawPluginConfig map[string]interface{}
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for pType, pConfig := range rawConfig {
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pluginType = pType
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rawPluginConfig = pConfig
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}
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if pluginType == "" {
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return "", nil, errors.New("missing plugin type")
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}
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return pluginType, rawPluginConfig, nil
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}
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type traceablePlugin struct {
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name string
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h http.Handler
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}
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func newTraceablePlugin(ctx context.Context, name string, plug plugins.Constructor, next http.Handler) (*traceablePlugin, error) {
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h, err := plug(ctx, next)
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if err != nil {
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return nil, err
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}
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return &traceablePlugin{name: name, h: h}, nil
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}
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func (s *traceablePlugin) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
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s.h.ServeHTTP(rw, req)
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}
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func (s *traceablePlugin) GetTracingInformation() (string, ext.SpanKindEnum) {
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return s.name, tracing.SpanKindNoneEnum
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}
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