100 lines
2.3 KiB
Go
100 lines
2.3 KiB
Go
package service
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import (
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"context"
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"errors"
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"fmt"
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"net/http"
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"strings"
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"github.com/traefik/traefik/v2/pkg/config/runtime"
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)
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type serviceManager interface {
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BuildHTTP(rootCtx context.Context, serviceName string) (http.Handler, error)
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LaunchHealthCheck()
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}
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// InternalHandlers is the internal HTTP handlers builder.
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type InternalHandlers struct {
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api http.Handler
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dashboard http.Handler
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rest http.Handler
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prometheus http.Handler
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ping http.Handler
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serviceManager
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}
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// NewInternalHandlers creates a new InternalHandlers.
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func NewInternalHandlers(api func(configuration *runtime.Configuration) http.Handler, configuration *runtime.Configuration, rest, metricsHandler, pingHandler, dashboard http.Handler, next serviceManager) *InternalHandlers {
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var apiHandler http.Handler
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if api != nil {
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apiHandler = api(configuration)
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}
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return &InternalHandlers{
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api: apiHandler,
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dashboard: dashboard,
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rest: rest,
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prometheus: metricsHandler,
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ping: pingHandler,
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serviceManager: next,
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}
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}
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// BuildHTTP builds an HTTP handler.
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func (m *InternalHandlers) BuildHTTP(rootCtx context.Context, serviceName string) (http.Handler, error) {
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if !strings.HasSuffix(serviceName, "@internal") {
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return m.serviceManager.BuildHTTP(rootCtx, serviceName)
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}
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internalHandler, err := m.get(serviceName)
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if err != nil {
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return nil, err
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}
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return internalHandler, nil
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}
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func (m *InternalHandlers) get(serviceName string) (http.Handler, error) {
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switch serviceName {
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case "noop@internal":
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return http.HandlerFunc(func(rw http.ResponseWriter, _ *http.Request) {
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rw.WriteHeader(http.StatusTeapot)
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}), nil
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case "api@internal":
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if m.api == nil {
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return nil, errors.New("api is not enabled")
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}
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return m.api, nil
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case "dashboard@internal":
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if m.dashboard == nil {
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return nil, errors.New("dashboard is not enabled")
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}
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return m.dashboard, nil
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case "rest@internal":
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if m.rest == nil {
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return nil, errors.New("rest is not enabled")
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}
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return m.rest, nil
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case "ping@internal":
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if m.ping == nil {
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return nil, errors.New("ping is not enabled")
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}
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return m.ping, nil
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case "prometheus@internal":
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if m.prometheus == nil {
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return nil, errors.New("prometheus is not enabled")
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}
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return m.prometheus, nil
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default:
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return nil, fmt.Errorf("unknown internal service %s", serviceName)
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}
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}
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