mirror of
https://github.com/open-telemetry/opentelemetry-go.git
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2ef25ea570
* Add request filtering capability to othhtp.Handler * Add simple and useful filters for othttp plugin * Add note that all requests are traced in the absence of any filters * Add copyright notice to plugin/othttp/filters/filters_test.go Co-Authored-By: Tyler Yahn <MrAlias@users.noreply.github.com> * Add package docstring for filters package Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com> Co-authored-by: Rahul Patel <rahulpa@google.com>
103 lines
2.8 KiB
Go
103 lines
2.8 KiB
Go
// Copyright 2019, OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package othttp
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import (
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"io"
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"io/ioutil"
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"net/http"
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"net/http/httptest"
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"testing"
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mocktrace "go.opentelemetry.io/otel/internal/trace"
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)
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func TestBasics(t *testing.T) {
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rr := httptest.NewRecorder()
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var id uint64
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tracer := mocktrace.MockTracer{StartSpanID: &id}
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h := NewHandler(
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http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if _, err := io.WriteString(w, "hello world"); err != nil {
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t.Fatal(err)
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}
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}), "test_handler",
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WithTracer(&tracer))
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r, err := http.NewRequest(http.MethodGet, "http://localhost/", nil)
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if err != nil {
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t.Fatal(err)
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}
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h.ServeHTTP(rr, r)
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if got, expected := rr.Result().StatusCode, http.StatusOK; got != expected {
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t.Fatalf("got %d, expected %d", got, expected)
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}
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if got := rr.Header().Get("Traceparent"); got == "" {
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t.Fatal("expected non empty trace header")
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}
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if got, expected := id, uint64(1); got != expected {
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t.Fatalf("got %d, expected %d", got, expected)
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}
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d, err := ioutil.ReadAll(rr.Result().Body)
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if err != nil {
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t.Fatal(err)
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}
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if got, expected := string(d), "hello world"; got != expected {
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t.Fatalf("got %q, expected %q", got, expected)
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}
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}
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func TestBasicFilter(t *testing.T) {
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rr := httptest.NewRecorder()
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var id uint64
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tracer := mocktrace.MockTracer{StartSpanID: &id}
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h := NewHandler(
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http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if _, err := io.WriteString(w, "hello world"); err != nil {
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t.Fatal(err)
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}
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}), "test_handler",
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WithTracer(&tracer),
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WithFilter(func(r *http.Request) bool {
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return false
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}),
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)
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r, err := http.NewRequest(http.MethodGet, "http://localhost/", nil)
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if err != nil {
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t.Fatal(err)
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}
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h.ServeHTTP(rr, r)
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if got, expected := rr.Result().StatusCode, http.StatusOK; got != expected {
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t.Fatalf("got %d, expected %d", got, expected)
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}
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if got := rr.Header().Get("Traceparent"); got != "" {
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t.Fatal("expected empty trace header")
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}
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if got, expected := id, uint64(0); got != expected {
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t.Fatalf("got %d, expected %d", got, expected)
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}
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d, err := ioutil.ReadAll(rr.Result().Body)
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if err != nil {
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t.Fatal(err)
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}
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if got, expected := string(d), "hello world"; got != expected {
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t.Fatalf("got %q, expected %q", got, expected)
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}
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}
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