mirror of
https://github.com/prometheus-community/json_exporter
synced 2024-12-23 15:04:43 +00:00
2b8fbee030
* Update go to 1.20. * Update Prometheus CI orb. * Add landing page. * Update Go modules. * Update golangci-lint. Signed-off-by: SuperQ <superq@gmail.com>
434 lines
14 KiB
Go
434 lines
14 KiB
Go
// Copyright 2020 The Prometheus Authors
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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 cmd
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import (
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"encoding/base64"
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"io"
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"net/http"
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"net/http/httptest"
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"os"
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"strings"
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"testing"
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"github.com/go-kit/log"
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"github.com/prometheus-community/json_exporter/config"
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pconfig "github.com/prometheus/common/config"
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)
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func TestFailIfSelfSignedCA(t *testing.T) {
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target := httptest.NewTLSServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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}))
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defer target.Close()
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req := httptest.NewRequest("GET", "http://example.com/foo"+"?module=default&target="+target.URL, nil)
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recorder := httptest.NewRecorder()
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probeHandler(recorder, req, log.NewNopLogger(), config.Config{Modules: map[string]config.Module{"default": {}}})
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resp := recorder.Result()
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body, _ := io.ReadAll(resp.Body)
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if resp.StatusCode != http.StatusServiceUnavailable {
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t.Fatalf("Fail if (not strict) selfsigned CA test fails unexpectedly, got %s", body)
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}
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}
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func TestSucceedIfSelfSignedCA(t *testing.T) {
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c := config.Config{
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Modules: map[string]config.Module{
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"default": {
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HTTPClientConfig: pconfig.HTTPClientConfig{
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TLSConfig: pconfig.TLSConfig{
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InsecureSkipVerify: true,
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},
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},
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}},
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}
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target := httptest.NewTLSServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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}))
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defer target.Close()
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req := httptest.NewRequest("GET", "http://example.com/foo"+"?module=default&target="+target.URL, nil)
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recorder := httptest.NewRecorder()
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probeHandler(recorder, req, log.NewNopLogger(), c)
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resp := recorder.Result()
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body, _ := io.ReadAll(resp.Body)
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("Succeed if (not strict) selfsigned CA test fails unexpectedly, got %s", body)
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}
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}
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func TestDefaultModule(t *testing.T) {
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target := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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}))
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defer target.Close()
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req := httptest.NewRequest("GET", "http://example.com/foo"+"?target="+target.URL, nil)
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recorder := httptest.NewRecorder()
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probeHandler(recorder, req, log.NewNopLogger(), config.Config{Modules: map[string]config.Module{"default": {}}})
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resp := recorder.Result()
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("Default module test fails unexpectedly, expected 200, got %d", resp.StatusCode)
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}
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// Module doesn't exist.
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recorder = httptest.NewRecorder()
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probeHandler(recorder, req, log.NewNopLogger(), config.Config{Modules: map[string]config.Module{"foo": {}}})
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resp = recorder.Result()
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if resp.StatusCode != http.StatusBadRequest {
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t.Fatalf("Default module test fails unexpectedly, expected 400, got %d", resp.StatusCode)
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}
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}
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func TestFailIfTargetMissing(t *testing.T) {
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req := httptest.NewRequest("GET", "http://example.com/foo", nil)
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recorder := httptest.NewRecorder()
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probeHandler(recorder, req, log.NewNopLogger(), config.Config{})
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resp := recorder.Result()
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body, _ := io.ReadAll(resp.Body)
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if resp.StatusCode != http.StatusBadRequest {
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t.Fatalf("Fail if 'target' query parameter missing test fails unexpectedly, got %s", body)
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}
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}
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func TestDefaultAcceptHeader(t *testing.T) {
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target := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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expected := "application/json"
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if got := r.Header.Get("Accept"); got != expected {
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t.Errorf("Default 'Accept' header mismatch, got %s, expected: %s", got, expected)
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w.WriteHeader(http.StatusNotAcceptable)
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}
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}))
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defer target.Close()
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req := httptest.NewRequest("GET", "http://example.com/foo"+"?module=default&target="+target.URL, nil)
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recorder := httptest.NewRecorder()
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probeHandler(recorder, req, log.NewNopLogger(), config.Config{Modules: map[string]config.Module{"default": {}}})
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resp := recorder.Result()
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body, _ := io.ReadAll(resp.Body)
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("Default 'Accept: application/json' header test fails unexpectedly, got %s", body)
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}
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}
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func TestCorrectResponse(t *testing.T) {
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tests := []struct {
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ConfigFile string
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ServeFile string
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ResponseFile string
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ShouldSucceed bool
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}{
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{"../test/config/good.yml", "/serve/good.json", "../test/response/good.txt", true},
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{"../test/config/good.yml", "/serve/repeat-metric.json", "../test/response/good.txt", false},
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}
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target := httptest.NewServer(http.FileServer(http.Dir("../test")))
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defer target.Close()
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for i, test := range tests {
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c, err := config.LoadConfig(test.ConfigFile)
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if err != nil {
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t.Fatalf("Failed to load config file %s", test.ConfigFile)
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}
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req := httptest.NewRequest("GET", "http://example.com/foo"+"?module=default&target="+target.URL+test.ServeFile, nil)
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recorder := httptest.NewRecorder()
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probeHandler(recorder, req, log.NewNopLogger(), c)
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resp := recorder.Result()
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body, _ := io.ReadAll(resp.Body)
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expected, _ := os.ReadFile(test.ResponseFile)
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if test.ShouldSucceed && string(body) != string(expected) {
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t.Fatalf("Correct response validation test %d fails unexpectedly.\nGOT:\n%s\nEXPECTED:\n%s", i, body, expected)
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}
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}
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}
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func TestBasicAuth(t *testing.T) {
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username := "myUser"
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password := "mySecretPassword"
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expected := "Basic " + base64.StdEncoding.EncodeToString([]byte(username+":"+password))
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target := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if got := r.Header.Get("Authorization"); got != expected {
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t.Errorf("BasicAuth mismatch, got: %s, expected: %s", got, expected)
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w.WriteHeader(http.StatusUnauthorized)
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}
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}))
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defer target.Close()
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req := httptest.NewRequest("GET", "http://example.com/foo"+"?module=default&target="+target.URL, nil)
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recorder := httptest.NewRecorder()
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c := config.Config{
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Modules: map[string]config.Module{
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"default": {
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HTTPClientConfig: pconfig.HTTPClientConfig{
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BasicAuth: &pconfig.BasicAuth{
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Username: username,
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Password: pconfig.Secret(password),
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},
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},
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},
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},
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}
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probeHandler(recorder, req, log.NewNopLogger(), c)
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resp := recorder.Result()
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body, _ := io.ReadAll(resp.Body)
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("BasicAuth test fails unexpectedly. Got: %s", body)
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}
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}
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func TestBearerToken(t *testing.T) {
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token := "mySecretToken"
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target := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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expected := "Bearer " + token
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if got := r.Header.Get("Authorization"); got != expected {
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t.Errorf("BearerToken mismatch, got: %s, expected: %s", got, expected)
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w.WriteHeader(http.StatusUnauthorized)
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}
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}))
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defer target.Close()
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req := httptest.NewRequest("GET", "http://example.com/foo"+"?module=default&target="+target.URL, nil)
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recorder := httptest.NewRecorder()
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c := config.Config{
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Modules: map[string]config.Module{"default": {
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HTTPClientConfig: pconfig.HTTPClientConfig{
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BearerToken: pconfig.Secret(token),
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},
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}},
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}
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probeHandler(recorder, req, log.NewNopLogger(), c)
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resp := recorder.Result()
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body, _ := io.ReadAll(resp.Body)
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("BearerToken test fails unexpectedly. Got: %s", body)
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}
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}
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func TestHTTPHeaders(t *testing.T) {
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headers := map[string]string{
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"X-Dummy": "test",
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"User-Agent": "unsuspicious user",
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"Accept-Language": "en-US",
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}
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target := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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for key, value := range headers {
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if got := r.Header.Get(key); got != value {
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t.Errorf("Unexpected value of header %q: expected %q, got %q", key, value, got)
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}
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}
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w.WriteHeader(http.StatusOK)
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}))
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defer target.Close()
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req := httptest.NewRequest("GET", "http://example.com/foo"+"?module=default&target="+target.URL, nil)
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recorder := httptest.NewRecorder()
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c := config.Config{
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Modules: map[string]config.Module{
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"default": {
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Headers: headers,
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},
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},
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}
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probeHandler(recorder, req, log.NewNopLogger(), c)
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resp := recorder.Result()
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body, _ := io.ReadAll(resp.Body)
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("Setting custom headers failed unexpectedly. Got: %s", body)
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}
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}
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// Test is the body template is correctly rendered
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func TestBodyPostTemplate(t *testing.T) {
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bodyTests := []struct {
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Body config.Body
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ShouldSucceed bool
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Result string
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}{
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{
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Body: config.Body{Content: "something static like pi, 3.14"},
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ShouldSucceed: true,
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},
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{
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Body: config.Body{Content: "arbitrary dynamic value pass: {{ randInt 12 30 }}", Templatize: false},
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ShouldSucceed: true,
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},
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{
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Body: config.Body{Content: "arbitrary dynamic value fail: {{ randInt 12 30 }}", Templatize: true},
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ShouldSucceed: false,
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},
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{
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Body: config.Body{Content: "templatized mutated value: {{ upper `hello` }} is now all caps", Templatize: true},
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Result: "templatized mutated value: HELLO is now all caps",
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ShouldSucceed: true,
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},
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{
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Body: config.Body{Content: "value should be {{ lower `All Small` | trunc 3 }}", Templatize: true},
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Result: "value should be all",
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ShouldSucceed: true,
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},
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}
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for _, test := range bodyTests {
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target := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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expected := test.Body.Content
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if test.Result != "" {
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expected = test.Result
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}
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if got, _ := io.ReadAll(r.Body); string(got) != expected && test.ShouldSucceed {
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t.Errorf("POST request body content mismatch, got: %s, expected: %s", got, expected)
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}
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w.WriteHeader(http.StatusOK)
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}))
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req := httptest.NewRequest("POST", "http://example.com/foo"+"?module=default&target="+target.URL, strings.NewReader(test.Body.Content))
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recorder := httptest.NewRecorder()
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c := config.Config{
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Modules: map[string]config.Module{
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"default": {
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Body: test.Body,
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},
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},
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}
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probeHandler(recorder, req, log.NewNopLogger(), c)
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resp := recorder.Result()
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respBody, _ := io.ReadAll(resp.Body)
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("POST body content failed. Got: %s", respBody)
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}
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target.Close()
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}
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}
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// Test is the query parameters are correctly replaced in the provided body template
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func TestBodyPostQuery(t *testing.T) {
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bodyTests := []struct {
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Body config.Body
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ShouldSucceed bool
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Result string
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QueryParams map[string]string
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}{
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{
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Body: config.Body{Content: "pi has {{ .piValue | first }} value", Templatize: true},
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ShouldSucceed: true,
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Result: "pi has 3.14 value",
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QueryParams: map[string]string{"piValue": "3.14"},
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},
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{
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Body: config.Body{Content: `{ "pi": "{{ .piValue | first }}" }`, Templatize: true},
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ShouldSucceed: true,
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Result: `{ "pi": "3.14" }`,
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QueryParams: map[string]string{"piValue": "3.14"},
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},
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{
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Body: config.Body{Content: "pi has {{ .anotherQuery | first }} value", Templatize: true},
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ShouldSucceed: true,
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Result: "pi has very high value",
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QueryParams: map[string]string{"piValue": "3.14", "anotherQuery": "very high"},
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},
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{
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Body: config.Body{Content: "pi has {{ .piValue }} value", Templatize: true},
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ShouldSucceed: false,
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QueryParams: map[string]string{"piValue": "3.14", "anotherQuery": "dummy value"},
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},
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{
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Body: config.Body{Content: "pi has {{ .piValue }} value", Templatize: true},
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ShouldSucceed: true,
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Result: "pi has [3.14] value",
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QueryParams: map[string]string{"piValue": "3.14", "anotherQuery": "dummy value"},
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},
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{
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Body: config.Body{Content: "value of {{ upper `pi` | repeat 3 }} is {{ .anotherQuery | first }}", Templatize: true},
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ShouldSucceed: true,
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Result: "value of PIPIPI is dummy value",
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QueryParams: map[string]string{"piValue": "3.14", "anotherQuery": "dummy value"},
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},
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{
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Body: config.Body{Content: "pi has {{ .piValue }} value", Templatize: true},
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ShouldSucceed: true,
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Result: "pi has [] value",
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},
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{
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Body: config.Body{Content: "pi has {{ .piValue | first }} value", Templatize: true},
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ShouldSucceed: true,
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Result: "pi has <no value> value",
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},
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{
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Body: config.Body{Content: "value of pi is 3.14", Templatize: true},
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ShouldSucceed: true,
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},
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}
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for _, test := range bodyTests {
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target := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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expected := test.Body.Content
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if test.Result != "" {
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expected = test.Result
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}
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if got, _ := io.ReadAll(r.Body); string(got) != expected && test.ShouldSucceed {
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t.Errorf("POST request body content mismatch (with query params), got: %s, expected: %s", got, expected)
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}
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w.WriteHeader(http.StatusOK)
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}))
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req := httptest.NewRequest("POST", "http://example.com/foo"+"?module=default&target="+target.URL, strings.NewReader(test.Body.Content))
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q := req.URL.Query()
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for k, v := range test.QueryParams {
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q.Add(k, v)
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}
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req.URL.RawQuery = q.Encode()
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recorder := httptest.NewRecorder()
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c := config.Config{
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Modules: map[string]config.Module{
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"default": {
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Body: test.Body,
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},
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},
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}
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probeHandler(recorder, req, log.NewNopLogger(), c)
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resp := recorder.Result()
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respBody, _ := io.ReadAll(resp.Body)
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("POST body content failed. Got: %s", respBody)
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}
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target.Close()
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}
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}
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