649 lines
19 KiB
Go
649 lines
19 KiB
Go
package accesslog
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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"net/http/httptest"
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"net/url"
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"os"
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"path/filepath"
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"regexp"
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"strings"
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"testing"
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"time"
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"github.com/containous/traefik/v2/pkg/types"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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var (
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logFileNameSuffix = "/traefik/logger/test.log"
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testContent = "Hello, World"
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testServiceName = "http://127.0.0.1/testService"
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testRouterName = "testRouter"
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testStatus = 123
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testContentSize int64 = 12
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testHostname = "TestHost"
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testUsername = "TestUser"
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testPath = "testpath"
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testPort = 8181
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testProto = "HTTP/0.0"
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testMethod = http.MethodPost
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testReferer = "testReferer"
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testUserAgent = "testUserAgent"
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testRetryAttempts = 2
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testStart = time.Now()
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)
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func TestLogRotation(t *testing.T) {
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tempDir, err := ioutil.TempDir("", "traefik_")
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if err != nil {
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t.Fatalf("Error setting up temporary directory: %s", err)
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}
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defer os.RemoveAll(tempDir)
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fileName := filepath.Join(tempDir, "traefik.log")
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rotatedFileName := fileName + ".rotated"
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config := &types.AccessLog{FilePath: fileName, Format: CommonFormat}
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logHandler, err := NewHandler(config)
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if err != nil {
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t.Fatalf("Error creating new log handler: %s", err)
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}
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defer logHandler.Close()
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recorder := httptest.NewRecorder()
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req := httptest.NewRequest(http.MethodGet, "http://localhost", nil)
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next := func(rw http.ResponseWriter, req *http.Request) {
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rw.WriteHeader(http.StatusOK)
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}
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iterations := 20
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halfDone := make(chan bool)
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writeDone := make(chan bool)
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go func() {
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for i := 0; i < iterations; i++ {
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logHandler.ServeHTTP(recorder, req, http.HandlerFunc(next))
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if i == iterations/2 {
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halfDone <- true
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}
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}
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writeDone <- true
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}()
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<-halfDone
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err = os.Rename(fileName, rotatedFileName)
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if err != nil {
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t.Fatalf("Error renaming file: %s", err)
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}
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err = logHandler.Rotate()
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if err != nil {
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t.Fatalf("Error rotating file: %s", err)
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}
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select {
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case <-writeDone:
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gotLineCount := lineCount(t, fileName) + lineCount(t, rotatedFileName)
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if iterations != gotLineCount {
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t.Errorf("Wanted %d written log lines, got %d", iterations, gotLineCount)
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}
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case <-time.After(500 * time.Millisecond):
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t.Fatalf("test timed out")
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}
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close(halfDone)
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close(writeDone)
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}
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func lineCount(t *testing.T, fileName string) int {
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t.Helper()
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fileContents, err := ioutil.ReadFile(fileName)
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if err != nil {
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t.Fatalf("Error reading from file %s: %s", fileName, err)
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}
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count := 0
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for _, line := range strings.Split(string(fileContents), "\n") {
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if strings.TrimSpace(line) == "" {
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continue
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}
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count++
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}
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return count
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}
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func TestLoggerCLF(t *testing.T) {
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tmpDir := createTempDir(t, CommonFormat)
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defer os.RemoveAll(tmpDir)
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logFilePath := filepath.Join(tmpDir, logFileNameSuffix)
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config := &types.AccessLog{FilePath: logFilePath, Format: CommonFormat}
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doLogging(t, config)
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logData, err := ioutil.ReadFile(logFilePath)
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require.NoError(t, err)
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expectedLog := ` TestHost - TestUser [13/Apr/2016:07:14:19 -0700] "POST testpath HTTP/0.0" 123 12 "testReferer" "testUserAgent" 1 "testRouter" "http://127.0.0.1/testService" 1ms`
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assertValidLogData(t, expectedLog, logData)
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}
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func TestAsyncLoggerCLF(t *testing.T) {
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tmpDir := createTempDir(t, CommonFormat)
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defer os.RemoveAll(tmpDir)
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logFilePath := filepath.Join(tmpDir, logFileNameSuffix)
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config := &types.AccessLog{FilePath: logFilePath, Format: CommonFormat, BufferingSize: 1024}
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doLogging(t, config)
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logData, err := ioutil.ReadFile(logFilePath)
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require.NoError(t, err)
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expectedLog := ` TestHost - TestUser [13/Apr/2016:07:14:19 -0700] "POST testpath HTTP/0.0" 123 12 "testReferer" "testUserAgent" 1 "testRouter" "http://127.0.0.1/testService" 1ms`
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assertValidLogData(t, expectedLog, logData)
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}
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func assertString(exp string) func(t *testing.T, actual interface{}) {
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return func(t *testing.T, actual interface{}) {
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t.Helper()
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assert.Equal(t, exp, actual)
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}
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}
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func assertNotEmpty() func(t *testing.T, actual interface{}) {
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return func(t *testing.T, actual interface{}) {
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t.Helper()
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assert.NotEqual(t, "", actual)
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}
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}
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func assertFloat64(exp float64) func(t *testing.T, actual interface{}) {
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return func(t *testing.T, actual interface{}) {
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t.Helper()
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assert.Equal(t, exp, actual)
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}
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}
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func assertFloat64NotZero() func(t *testing.T, actual interface{}) {
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return func(t *testing.T, actual interface{}) {
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t.Helper()
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assert.NotZero(t, actual)
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}
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}
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func TestLoggerJSON(t *testing.T) {
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testCases := []struct {
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desc string
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config *types.AccessLog
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expected map[string]func(t *testing.T, value interface{})
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}{
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{
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desc: "default config",
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config: &types.AccessLog{
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FilePath: "",
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Format: JSONFormat,
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},
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expected: map[string]func(t *testing.T, value interface{}){
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RequestContentSize: assertFloat64(0),
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RequestHost: assertString(testHostname),
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RequestAddr: assertString(testHostname),
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RequestMethod: assertString(testMethod),
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RequestPath: assertString(testPath),
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RequestProtocol: assertString(testProto),
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RequestPort: assertString("-"),
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DownstreamStatus: assertFloat64(float64(testStatus)),
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DownstreamContentSize: assertFloat64(float64(len(testContent))),
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OriginContentSize: assertFloat64(float64(len(testContent))),
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OriginStatus: assertFloat64(float64(testStatus)),
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RequestRefererHeader: assertString(testReferer),
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RequestUserAgentHeader: assertString(testUserAgent),
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RouterName: assertString(testRouterName),
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ServiceURL: assertString(testServiceName),
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ClientUsername: assertString(testUsername),
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ClientHost: assertString(testHostname),
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ClientPort: assertString(fmt.Sprintf("%d", testPort)),
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ClientAddr: assertString(fmt.Sprintf("%s:%d", testHostname, testPort)),
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"level": assertString("info"),
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"msg": assertString(""),
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"downstream_Content-Type": assertString("text/plain; charset=utf-8"),
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RequestCount: assertFloat64NotZero(),
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Duration: assertFloat64NotZero(),
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Overhead: assertFloat64NotZero(),
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RetryAttempts: assertFloat64(float64(testRetryAttempts)),
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"time": assertNotEmpty(),
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"StartLocal": assertNotEmpty(),
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"StartUTC": assertNotEmpty(),
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},
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},
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{
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desc: "default config drop all fields",
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config: &types.AccessLog{
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FilePath: "",
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Format: JSONFormat,
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Fields: &types.AccessLogFields{
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DefaultMode: "drop",
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},
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},
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expected: map[string]func(t *testing.T, value interface{}){
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"level": assertString("info"),
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"msg": assertString(""),
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"time": assertNotEmpty(),
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"downstream_Content-Type": assertString("text/plain; charset=utf-8"),
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RequestRefererHeader: assertString(testReferer),
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RequestUserAgentHeader: assertString(testUserAgent),
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},
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},
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{
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desc: "default config drop all fields and headers",
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config: &types.AccessLog{
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FilePath: "",
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Format: JSONFormat,
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Fields: &types.AccessLogFields{
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DefaultMode: "drop",
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Headers: &types.FieldHeaders{
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DefaultMode: "drop",
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},
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},
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},
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expected: map[string]func(t *testing.T, value interface{}){
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"level": assertString("info"),
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"msg": assertString(""),
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"time": assertNotEmpty(),
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},
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},
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{
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desc: "default config drop all fields and redact headers",
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config: &types.AccessLog{
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FilePath: "",
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Format: JSONFormat,
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Fields: &types.AccessLogFields{
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DefaultMode: "drop",
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Headers: &types.FieldHeaders{
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DefaultMode: "redact",
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},
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},
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},
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expected: map[string]func(t *testing.T, value interface{}){
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"level": assertString("info"),
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"msg": assertString(""),
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"time": assertNotEmpty(),
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"downstream_Content-Type": assertString("REDACTED"),
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RequestRefererHeader: assertString("REDACTED"),
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RequestUserAgentHeader: assertString("REDACTED"),
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},
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},
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{
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desc: "default config drop all fields and headers but kept someone",
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config: &types.AccessLog{
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FilePath: "",
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Format: JSONFormat,
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Fields: &types.AccessLogFields{
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DefaultMode: "drop",
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Names: map[string]string{
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RequestHost: "keep",
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},
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Headers: &types.FieldHeaders{
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DefaultMode: "drop",
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Names: map[string]string{
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"Referer": "keep",
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},
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},
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},
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},
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expected: map[string]func(t *testing.T, value interface{}){
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RequestHost: assertString(testHostname),
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"level": assertString("info"),
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"msg": assertString(""),
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"time": assertNotEmpty(),
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RequestRefererHeader: assertString(testReferer),
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},
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},
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}
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for _, test := range testCases {
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test := test
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t.Run(test.desc, func(t *testing.T) {
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t.Parallel()
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tmpDir := createTempDir(t, JSONFormat)
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defer os.RemoveAll(tmpDir)
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logFilePath := filepath.Join(tmpDir, logFileNameSuffix)
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test.config.FilePath = logFilePath
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doLogging(t, test.config)
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logData, err := ioutil.ReadFile(logFilePath)
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require.NoError(t, err)
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jsonData := make(map[string]interface{})
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err = json.Unmarshal(logData, &jsonData)
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require.NoError(t, err)
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assert.Equal(t, len(test.expected), len(jsonData))
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for field, assertion := range test.expected {
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assertion(t, jsonData[field])
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}
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})
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}
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}
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func TestNewLogHandlerOutputStdout(t *testing.T) {
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testCases := []struct {
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desc string
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config *types.AccessLog
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expectedLog string
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}{
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{
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desc: "default config",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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},
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expectedLog: `TestHost - TestUser [13/Apr/2016:07:14:19 -0700] "POST testpath HTTP/0.0" 123 12 "testReferer" "testUserAgent" 23 "testRouter" "http://127.0.0.1/testService" 1ms`,
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},
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{
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desc: "default config with empty filters",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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Filters: &types.AccessLogFilters{},
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},
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expectedLog: `TestHost - TestUser [13/Apr/2016:07:14:19 -0700] "POST testpath HTTP/0.0" 123 12 "testReferer" "testUserAgent" 23 "testRouter" "http://127.0.0.1/testService" 1ms`,
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},
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{
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desc: "Status code filter not matching",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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Filters: &types.AccessLogFilters{
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StatusCodes: []string{"200"},
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},
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},
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expectedLog: ``,
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},
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{
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desc: "Status code filter matching",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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Filters: &types.AccessLogFilters{
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StatusCodes: []string{"123"},
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},
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},
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expectedLog: `TestHost - TestUser [13/Apr/2016:07:14:19 -0700] "POST testpath HTTP/0.0" 123 12 "testReferer" "testUserAgent" 23 "testRouter" "http://127.0.0.1/testService" 1ms`,
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},
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{
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desc: "Duration filter not matching",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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Filters: &types.AccessLogFilters{
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MinDuration: types.Duration(1 * time.Hour),
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},
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},
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expectedLog: ``,
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},
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{
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desc: "Duration filter matching",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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Filters: &types.AccessLogFilters{
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MinDuration: types.Duration(1 * time.Millisecond),
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},
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},
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expectedLog: `TestHost - TestUser [13/Apr/2016:07:14:19 -0700] "POST testpath HTTP/0.0" 123 12 "testReferer" "testUserAgent" 23 "testRouter" "http://127.0.0.1/testService" 1ms`,
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},
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{
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desc: "Retry attempts filter matching",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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Filters: &types.AccessLogFilters{
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RetryAttempts: true,
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},
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},
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expectedLog: `TestHost - TestUser [13/Apr/2016:07:14:19 -0700] "POST testpath HTTP/0.0" 123 12 "testReferer" "testUserAgent" 23 "testRouter" "http://127.0.0.1/testService" 1ms`,
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},
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{
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desc: "Default mode keep",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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Fields: &types.AccessLogFields{
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DefaultMode: "keep",
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},
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},
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expectedLog: `TestHost - TestUser [13/Apr/2016:07:14:19 -0700] "POST testpath HTTP/0.0" 123 12 "testReferer" "testUserAgent" 23 "testRouter" "http://127.0.0.1/testService" 1ms`,
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},
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{
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desc: "Default mode keep with override",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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Fields: &types.AccessLogFields{
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DefaultMode: "keep",
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Names: map[string]string{
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ClientHost: "drop",
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},
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},
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},
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expectedLog: `- - TestUser [13/Apr/2016:07:14:19 -0700] "POST testpath HTTP/0.0" 123 12 "testReferer" "testUserAgent" 23 "testRouter" "http://127.0.0.1/testService" 1ms`,
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},
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{
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desc: "Default mode drop",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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Fields: &types.AccessLogFields{
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DefaultMode: "drop",
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},
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},
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expectedLog: `- - - [-] "- - -" - - "testReferer" "testUserAgent" - - - 0ms`,
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},
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{
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desc: "Default mode drop with override",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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Fields: &types.AccessLogFields{
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DefaultMode: "drop",
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Names: map[string]string{
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ClientHost: "drop",
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ClientUsername: "keep",
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},
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},
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},
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expectedLog: `- - TestUser [-] "- - -" - - "testReferer" "testUserAgent" - - - 0ms`,
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},
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{
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desc: "Default mode drop with header dropped",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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Fields: &types.AccessLogFields{
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DefaultMode: "drop",
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Names: map[string]string{
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ClientHost: "drop",
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ClientUsername: "keep",
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},
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Headers: &types.FieldHeaders{
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DefaultMode: "drop",
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},
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},
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},
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expectedLog: `- - TestUser [-] "- - -" - - "-" "-" - - - 0ms`,
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},
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{
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desc: "Default mode drop with header redacted",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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Fields: &types.AccessLogFields{
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DefaultMode: "drop",
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Names: map[string]string{
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ClientHost: "drop",
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ClientUsername: "keep",
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},
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Headers: &types.FieldHeaders{
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DefaultMode: "redact",
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},
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},
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},
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expectedLog: `- - TestUser [-] "- - -" - - "REDACTED" "REDACTED" - - - 0ms`,
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},
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{
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desc: "Default mode drop with header redacted",
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config: &types.AccessLog{
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FilePath: "",
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Format: CommonFormat,
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Fields: &types.AccessLogFields{
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DefaultMode: "drop",
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Names: map[string]string{
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ClientHost: "drop",
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ClientUsername: "keep",
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},
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Headers: &types.FieldHeaders{
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DefaultMode: "keep",
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Names: map[string]string{
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"Referer": "redact",
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},
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},
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},
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},
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expectedLog: `- - TestUser [-] "- - -" - - "REDACTED" "testUserAgent" - - - 0ms`,
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},
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}
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for _, test := range testCases {
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test := test
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t.Run(test.desc, func(t *testing.T) {
|
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// NOTE: It is not possible to run these cases in parallel because we capture Stdout
|
|
|
|
file, restoreStdout := captureStdout(t)
|
|
defer restoreStdout()
|
|
|
|
doLogging(t, test.config)
|
|
|
|
written, err := ioutil.ReadFile(file.Name())
|
|
require.NoError(t, err, "unable to read captured stdout from file")
|
|
assertValidLogData(t, test.expectedLog, written)
|
|
})
|
|
}
|
|
}
|
|
|
|
func assertValidLogData(t *testing.T, expected string, logData []byte) {
|
|
if len(expected) == 0 {
|
|
assert.Zero(t, len(logData))
|
|
t.Log(string(logData))
|
|
return
|
|
}
|
|
|
|
result, err := ParseAccessLog(string(logData))
|
|
require.NoError(t, err)
|
|
|
|
resultExpected, err := ParseAccessLog(expected)
|
|
require.NoError(t, err)
|
|
|
|
formatErrMessage := fmt.Sprintf(`
|
|
Expected: %s
|
|
Actual: %s`, expected, string(logData))
|
|
|
|
require.Equal(t, len(resultExpected), len(result), formatErrMessage)
|
|
assert.Equal(t, resultExpected[ClientHost], result[ClientHost], formatErrMessage)
|
|
assert.Equal(t, resultExpected[ClientUsername], result[ClientUsername], formatErrMessage)
|
|
assert.Equal(t, resultExpected[RequestMethod], result[RequestMethod], formatErrMessage)
|
|
assert.Equal(t, resultExpected[RequestPath], result[RequestPath], formatErrMessage)
|
|
assert.Equal(t, resultExpected[RequestProtocol], result[RequestProtocol], formatErrMessage)
|
|
assert.Equal(t, resultExpected[OriginStatus], result[OriginStatus], formatErrMessage)
|
|
assert.Equal(t, resultExpected[OriginContentSize], result[OriginContentSize], formatErrMessage)
|
|
assert.Equal(t, resultExpected[RequestRefererHeader], result[RequestRefererHeader], formatErrMessage)
|
|
assert.Equal(t, resultExpected[RequestUserAgentHeader], result[RequestUserAgentHeader], formatErrMessage)
|
|
assert.Regexp(t, regexp.MustCompile("[0-9]*"), result[RequestCount], formatErrMessage)
|
|
assert.Equal(t, resultExpected[RouterName], result[RouterName], formatErrMessage)
|
|
assert.Equal(t, resultExpected[ServiceURL], result[ServiceURL], formatErrMessage)
|
|
assert.Regexp(t, regexp.MustCompile("[0-9]*ms"), result[Duration], formatErrMessage)
|
|
}
|
|
|
|
func captureStdout(t *testing.T) (out *os.File, restoreStdout func()) {
|
|
file, err := ioutil.TempFile("", "testlogger")
|
|
require.NoError(t, err, "failed to create temp file")
|
|
|
|
original := os.Stdout
|
|
os.Stdout = file
|
|
|
|
restoreStdout = func() {
|
|
os.Stdout = original
|
|
os.RemoveAll(file.Name())
|
|
}
|
|
|
|
return file, restoreStdout
|
|
}
|
|
|
|
func createTempDir(t *testing.T, prefix string) string {
|
|
tmpDir, err := ioutil.TempDir("", prefix)
|
|
require.NoError(t, err, "failed to create temp dir")
|
|
|
|
return tmpDir
|
|
}
|
|
|
|
func doLogging(t *testing.T, config *types.AccessLog) {
|
|
logger, err := NewHandler(config)
|
|
require.NoError(t, err)
|
|
defer logger.Close()
|
|
|
|
if config.FilePath != "" {
|
|
_, err = os.Stat(config.FilePath)
|
|
require.NoError(t, err, fmt.Sprintf("logger should create %s", config.FilePath))
|
|
}
|
|
|
|
req := &http.Request{
|
|
Header: map[string][]string{
|
|
"User-Agent": {testUserAgent},
|
|
"Referer": {testReferer},
|
|
},
|
|
Proto: testProto,
|
|
Host: testHostname,
|
|
Method: testMethod,
|
|
RemoteAddr: fmt.Sprintf("%s:%d", testHostname, testPort),
|
|
URL: &url.URL{
|
|
User: url.UserPassword(testUsername, ""),
|
|
Path: testPath,
|
|
},
|
|
}
|
|
|
|
logger.ServeHTTP(httptest.NewRecorder(), req, http.HandlerFunc(logWriterTestHandlerFunc))
|
|
}
|
|
|
|
func logWriterTestHandlerFunc(rw http.ResponseWriter, r *http.Request) {
|
|
if _, err := rw.Write([]byte(testContent)); err != nil {
|
|
http.Error(rw, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
logData := GetLogData(r)
|
|
if logData != nil {
|
|
logData.Core[RouterName] = testRouterName
|
|
logData.Core[ServiceURL] = testServiceName
|
|
logData.Core[OriginStatus] = testStatus
|
|
logData.Core[OriginContentSize] = testContentSize
|
|
logData.Core[RetryAttempts] = testRetryAttempts
|
|
logData.Core[StartUTC] = testStart.UTC()
|
|
logData.Core[StartLocal] = testStart.Local()
|
|
} else {
|
|
http.Error(rw, "LogData is nil", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
rw.WriteHeader(testStatus)
|
|
}
|