update tracing, fixed docker-compose and removed vendor dir

example-project/internal/platform/web/web.go

@@ -9,9 +9,6 @@ import (
 	"time"
 
 	"github.com/dimfeld/httptreemux"
-	"go.opencensus.io/plugin/ochttp"
-	"go.opencensus.io/plugin/ochttp/propagation/tracecontext"
-	"go.opencensus.io/trace"
 )
 
 // ctxKey represents the type of value for the context key.
@@ -22,7 +19,6 @@ const KeyValues ctxKey = 1
 
 // Values represent state for each request.
 type Values struct {
-	TraceID    string
 	Now        time.Time
 	StatusCode int
 }
@@ -36,7 +32,6 @@ type Handler func(ctx context.Context, w http.ResponseWriter, r *http.Request, p
 // data/logic on this App struct
 type App struct {
 	*httptreemux.TreeMux
-	och      *ochttp.Handler
 	shutdown chan os.Signal
 	log      *log.Logger
 	mw       []Middleware
@@ -51,17 +46,6 @@ func NewApp(shutdown chan os.Signal, log *log.Logger, mw ...Middleware) *App {
 		mw:       mw,
 	}
 
-	// Create an OpenCensus HTTP Handler which wraps the router. This will start
-	// the initial span and annotate it with information about the request/response.
-	//
-	// This is configured to use the W3C TraceContext standard to set the remote
-	// parent if an client request includes the appropriate headers.
-	// https://w3c.github.io/trace-context/
-	app.och = &ochttp.Handler{
-		Handler:     app.TreeMux,
-		Propagation: &tracecontext.HTTPFormat{},
-	}
-
 	return &app
 }
 
@@ -84,16 +68,12 @@ func (a *App) Handle(verb, path string, handler Handler, mw ...Middleware) {
 
 	// The function to execute for each request.
 	h := func(w http.ResponseWriter, r *http.Request, params map[string]string) {
-		ctx, span := trace.StartSpan(r.Context(), "internal.platform.web")
-		defer span.End()
-
 		// Set the context with the required values to
 		// process the request.
 		v := Values{
-			TraceID: span.SpanContext().TraceID.String(),
 			Now:     time.Now(),
 		}
-		ctx = context.WithValue(ctx, KeyValues, &v)
+		ctx := context.WithValue(r.Context(), KeyValues, &v)
 
 		// Call the wrapped handler functions.
 		if err := handler(ctx, w, r, params); err != nil {
@@ -106,10 +86,3 @@ func (a *App) Handle(verb, path string, handler Handler, mw ...Middleware) {
 	// Add this handler for the specified verb and route.
 	a.TreeMux.Handle(verb, path, h)
 }
-
-// ServeHTTP implements the http.Handler interface. It overrides the ServeHTTP
-// of the embedded TreeMux by using the ochttp.Handler instead. That Handler
-// wraps the TreeMux handler so the routes are served.
-func (a *App) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	a.och.ServeHTTP(w, r)
-}