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[#369] S3-playback http-body decoding
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Browse source 
Signed-off-by: Nikita Zinkevich <n.zinkevich@yadro.com>
This commit is contained in:
Nikita Zinkevich 2024-08-02 16:45:49 +03:00
parent f6a7beb2b5
commit a5b38537e6
9 changed files with 193 additions and 124 deletions
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123
api/middleware/log_http.go
View file

@ -15,19 +15,29 @@ import (
"gopkg.in/natefinch/lumberjack.v2"
)
type LogHTTPConfig struct {
type (
LogHTTPConfig struct {
Enabled bool
MaxBody int64
MaxLogSize int
OutputPath string
UseGzip bool
LogBefore bool
}
type fileLogger struct {
fileLogger struct {
*zap.Logger
logRoller *lumberjack.Logger
}
// Implementation of zap.Sink for using lumberjack.
lumberjackSink struct {
*lumberjack.Logger
}
// responseReadWriter helps read http response body.
responseReadWriter struct {
http.ResponseWriter
response *bytes.Buffer
statusCode int
}
)
const (
payloadLabel = "payload"
@ -57,6 +67,13 @@ func newFileLogger(conf *LogHTTPConfig) (fileLogger, error) {
return flog, nil
}
func newResponseReadWriter(w http.ResponseWriter) *responseReadWriter {
return &responseReadWriter{
ResponseWriter: w,
response: &bytes.Buffer{},
}
}
// registerOutputSink creates and registers sink for logger file output.
func (f *fileLogger) registerOutputSink(conf *LogHTTPConfig) error {
f.logRoller = &lumberjack.Logger{
@ -76,11 +93,6 @@ func (f *fileLogger) registerOutputSink(conf *LogHTTPConfig) error {
return nil
}
// Implementation of zap.Sink for using lumberjack.
type lumberjackSink struct {
*lumberjack.Logger
}
func (lumberjackSink) Sync() error {
return nil
}
@ -102,17 +114,16 @@ func ReloadFileLogger(conf *LogHTTPConfig) error {
return nil
}
// responseReadWriter helps read http response body.
type responseReadWriter struct {
http.ResponseWriter
response *bytes.Buffer
}
func (ww *responseReadWriter) Write(data []byte) (int, error) {
ww.response.Write(data)
return ww.ResponseWriter.Write(data)
}
func (ww *responseReadWriter) WriteHeader(code int) {
ww.statusCode = code
ww.ResponseWriter.WriteHeader(code)
}
func (ww *responseReadWriter) Flush() {
if f, ok := ww.ResponseWriter.(http.Flusher); ok {
f.Flush()
@ -138,43 +149,35 @@ func LogHTTP(l *zap.Logger, config *LogHTTPConfig) Func {
return
}
httplog := filelog.getHTTPLogger(r)
httplog.withFieldIfExist("query", r.URL.Query())
httplog.withFieldIfExist("headers", r.Header)
httplog := filelog.getHTTPLogger(r).
withFieldIfExist("query", r.URL.Query()).
withFieldIfExist("headers", r.Header)
payload, err := getBody(r.Body)
if err != nil {
l.Error(logs.FailedToGetHTTPBody,
zap.Error(err),
zap.String("body type", payloadLabel))
return
}
payload := getBody(r.Body, l)
r.Body = io.NopCloser(bytes.NewReader(payload))
respBuf := &bytes.Buffer{}
wr := &responseReadWriter{ResponseWriter: w, response: respBuf}
payloadReader := io.LimitReader(bytes.NewReader(payload), config.MaxBody)
httplog = httplog.withProcessedBody(payloadLabel, payloadReader, l)
wr := newResponseReadWriter(w)
h.ServeHTTP(wr, r)
payloadReader := io.LimitReader(bytes.NewReader(payload), config.MaxBody)
httplog, err = httplog.withProcessedBody(payloadLabel, payloadReader)
if err != nil {
l.Error(logs.FailedToProcessHTTPBody,
zap.Error(err),
zap.String("body type", payloadLabel))
}
respReader := io.LimitReader(respBuf, config.MaxBody)
httplog, err = httplog.withProcessedBody(responseLabel, respReader)
if err != nil {
l.Error(logs.FailedToProcessHTTPBody,
zap.Error(err),
zap.String("body type", responseLabel))
}
respReader := io.LimitReader(wr.response, config.MaxBody)
httplog = httplog.withProcessedBody(responseLabel, respReader, l)
httplog = httplog.with(zap.Int("status", wr.statusCode))
httplog.Info(logs.LogHTTP)
})
}
}
func (f *fileLogger) with(fields ...zap.Field) *fileLogger {
return &fileLogger{
Logger: f.Logger.With(fields...),
logRoller: f.logRoller,
}
}
func (f *fileLogger) getHTTPLogger(r *http.Request) *fileLogger {
return &fileLogger{
Logger: f.Logger.With(
@ -187,14 +190,16 @@ func (f *fileLogger) getHTTPLogger(r *http.Request) *fileLogger {
}
}
func (f *fileLogger) withProcessedBody(label string, bodyReader io.Reader) (*fileLogger, error) {
resp, err := ProcessBody(bodyReader)
func (f *fileLogger) withProcessedBody(label string, bodyReader io.Reader, l *zap.Logger) *fileLogger {
resp, err := processBody(bodyReader)
if err != nil {
return f, err
l.Error(logs.FailedToProcessHTTPBody,
zap.Error(err),
zap.String("body type", payloadLabel))
return f
}
f.Logger = f.Logger.With(zap.ByteString(label, resp))
return f, nil
return f.with(zap.ByteString(label, resp))
}
// newLoggerConfig creates new zap.Config with disabled base fields.
@ -210,29 +215,37 @@ func (f *fileLogger) newLoggerConfig() zap.Config {
return c
}
// getBody reads http.Body and returns its io.Reader.
func getBody(httpBody io.ReadCloser) ([]byte, error) {
func getBody(httpBody io.ReadCloser, l *zap.Logger) []byte {
defer httpBody.Close()
body, err := io.ReadAll(httpBody)
if err != nil {
return nil, err
l.Error(logs.FailedToGetHTTPBody,
zap.Error(err),
zap.String("body type", payloadLabel))
return nil
}
return body, nil
return body
}
// ProcessBody reads body and base64 encode it if it's not XML.
func ProcessBody(bodyReader io.Reader) ([]byte, error) {
// processBody reads body and base64 encode it if it's not XML.
func processBody(bodyReader io.Reader) ([]byte, error) {
resultBody := &bytes.Buffer{}
isXML, checkedPart, err := utils.DetectXML(bodyReader)
isXML, checkedBytes, err := utils.DetectXML(bodyReader)
if err != nil {
return nil, err
}
writer := utils.ChooseWriter(isXML, resultBody)
writer.Write(checkedPart)
_, err = writer.Write(checkedBytes)
if err != nil {
return nil, err
}
if _, err = io.Copy(writer, bodyReader); err != nil {
return nil, err
}
if err = writer.Close(); err != nil {
return nil, err
}
return resultBody.Bytes(), nil
}
@ -240,7 +253,7 @@ func ProcessBody(bodyReader io.Reader) ([]byte, error) {
// withFieldIfExist checks whether data is not empty and attach it to log output.
func (f *fileLogger) withFieldIfExist(label string, data map[string][]string) *fileLogger {
if len(data) != 0 {
f.Logger = f.Logger.With(zap.Any(label, data))
return f.with(zap.Any(label, data))
}
return f
}

1
cmd/s3-gw/app.go
View file

@ -573,7 +573,6 @@ func (s *appSettings) updateHTTPLoggingSettings(cfg *viper.Viper, log *zap.Logge
s.httpLogging.MaxLogSize = cfg.GetInt(cfgHTTPLoggingMaxLogSize)
s.httpLogging.OutputPath = cfg.GetString(cfgHTTPLoggingDestination)
s.httpLogging.UseGzip = cfg.GetBool(cfgHTTPLoggingGzip)
s.httpLogging.LogBefore = cfg.GetBool(cfgHTTPLoggingLogResponse)
if err := s3middleware.ReloadFileLogger(s.httpLogging); err != nil {
log.Error(logs.FailedToReloadHTTPFileLogger, zap.Error(err))
}

4
cmd/s3-playback/modules/root.go
View file

@ -10,12 +10,14 @@ import (
)
const (
defaultPrintResponseLimit = 1024
configPath = "config"
configPathFlag = "config"
httpTimeout = "http_timeout"
httpTimeoutFlag = "http-timeout"
skipVerifyTLS = "skip_verify_tls"
skipVerifyTLSFlag = "skip-verify-tls"
printResponseLimit = "print_response_limit"
)
var (
@ -36,6 +38,8 @@ var (
_ = viper.BindPFlag(skipVerifyTLS, cmd.PersistentFlags().Lookup(skipVerifyTLSFlag))
viper.SetDefault(printResponseLimit, defaultPrintResponseLimit)
return nil
},
RunE: func(cmd *cobra.Command, _ []string) error {

74
cmd/s3-playback/modules/run.go
View file

@ -18,7 +18,8 @@ import (
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/auth"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/cmd/s3-playback/request"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/playback"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/playback/utils"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
@ -55,26 +56,44 @@ func init() {
runCmd.Flags().String(endpointFlag, "", "endpoint URL")
}
func logResponse(cmd *cobra.Command, id int, resp *http.Response, logReq request.LoggedRequest) {
cmd.Println(strconv.Itoa(id)+")", logReq.Method, logReq.URI)
func logResponse(cmd *cobra.Command, r *http.Request, resp *http.Response) {
cmd.Println(r.Method, r.URL.RequestURI())
cmd.Println(resp.Status)
if resp.ContentLength != 0 {
body, err := io.ReadAll(io.LimitReader(resp.Body, resp.ContentLength))
if resp.ContentLength == 0 {
return
}
isXML, checkBuf, err := utils.DetectXML(resp.Body)
if err != nil {
cmd.Println(id, err)
cmd.Println(err.Error())
return
}
cmd.Println(string(body))
body := &bytes.Buffer{}
resultWriter := utils.ChooseWriter(isXML, body)
if _, err = resultWriter.Write(checkBuf); err != nil {
cmd.Println(err)
return
}
_, err = io.Copy(resultWriter, io.LimitReader(resp.Body, viper.GetInt64(printResponseLimit)))
if err != nil {
cmd.Println(err)
return
}
if err = resultWriter.Close(); err != nil {
cmd.Printf("could not close response body: %s\n", err)
return
}
cmd.Println(body.String())
cmd.Println()
}
func run(cmd *cobra.Command, _ []string) error {
ctx := request.SetCredentials(
ctx := playback.SetCredentials(
cmd.Context(),
viper.GetString(awsAccessKey),
viper.GetString(awsSecretKey),
)
ctx = request.WithMultiparts(ctx)
ctx = playback.WithMultiparts(ctx)
file, err := os.Open(viper.GetString(logPathFlag))
if err != nil {
@ -109,13 +128,14 @@ func run(cmd *cobra.Command, _ []string) error {
case <-ctx.Done():
return fmt.Errorf("interrupted: %w", ctx.Err())
default:
resp, err := playback(ctx, logReq, client)
r, resp, err := playbackRequest(ctx, logReq, client)
if err != nil {
cmd.PrintErrln(strconv.Itoa(id)+")", "failed to playback request:", err)
id++
continue
}
logResponse(cmd, id, resp, logReq)
cmd.Print(strconv.Itoa(id) + ") ")
logResponse(cmd, r, resp)
id++
}
}
@ -123,8 +143,8 @@ func run(cmd *cobra.Command, _ []string) error {
return nil
}
func getRequestFromLog(reader *bufio.Reader) (request.LoggedRequest, error) {
var logReq request.LoggedRequest
func getRequestFromLog(reader *bufio.Reader) (playback.LoggedRequest, error) {
var logReq playback.LoggedRequest
req, err := reader.ReadString('\n')
if err != nil {
return logReq, err
@ -138,55 +158,55 @@ func getRequestFromLog(reader *bufio.Reader) (request.LoggedRequest, error) {
return logReq, nil
}
// playback creates http.Request from LoggedRequest and sends it to specified endpoint.
func playback(ctx context.Context, logReq request.LoggedRequest, client *http.Client) (*http.Response, error) {
// playbackRequest creates http.Request from LoggedRequest and sends it to specified endpoint.
func playbackRequest(ctx context.Context, logReq playback.LoggedRequest, client *http.Client) (*http.Request, *http.Response, error) {
r, err := prepareRequest(ctx, logReq)
if err != nil {
return nil, fmt.Errorf("failed to prepare request: %w", err)
return nil, nil, fmt.Errorf("failed to prepare request: %w", err)
}
resp, err := client.Do(r)
if err != nil {
return nil, fmt.Errorf("failed to send request: %w", err)
return nil, nil, fmt.Errorf("failed to send request: %w", err)
}
respBody, err := io.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("failed to read response body: %w", err)
return nil, nil, fmt.Errorf("failed to read response body: %w", err)
}
defer resp.Body.Close()
if err = request.HandleResponse(ctx, r, respBody, logReq.Response); err != nil {
return nil, fmt.Errorf("failed to register multipart upload: %w", err)
if err = playback.HandleResponse(ctx, r, respBody, logReq.Response); err != nil {
return nil, nil, fmt.Errorf("failed to register multipart upload: %w", err)
}
resp.Body = io.NopCloser(bytes.NewBuffer(respBody))
return resp, nil
return r, resp, nil
}
// prepareRequest creates request from logs and modifies its signature and uploadId (if presents).
func prepareRequest(ctx context.Context, logReq request.LoggedRequest) (*http.Request, error) {
func prepareRequest(ctx context.Context, logReq playback.LoggedRequest) (*http.Request, error) {
r, err := http.NewRequestWithContext(ctx, logReq.Method, viper.GetString(endpointFlag)+logReq.URI,
bytes.NewReader(logReq.Body))
bytes.NewReader(logReq.Payload))
if err != nil {
return nil, err
}
r.Header = logReq.Header
err = request.SwapUploadID(ctx, r)
err = playback.SwapUploadID(ctx, r)
if err != nil {
return nil, err
}
sha256hash := sha256.New()
sha256hash.Write(logReq.Body)
sha256hash.Write(logReq.Payload)
r.Header.Set(auth.AmzContentSHA256, hex.EncodeToString(sha256hash.Sum(nil)))
if r.Header.Get(api.ContentMD5) != "" {
sha256hash.Reset()
md5hash := md5.New()
md5hash.Write(logReq.Body)
md5hash.Write(logReq.Payload)
r.Header.Set(api.ContentMD5, base64.StdEncoding.EncodeToString(md5hash.Sum(nil)))
}
err = request.Sign(ctx, r)
err = playback.Sign(ctx, r)
if err != nil {
return nil, err
}

3
config/playback/playback.yaml
View file

@ -1,7 +1,8 @@
endpoint: http://localhost:8084
log: ./log/multipart5.log
log: ./log/request.log
credentials:
access_key: CAtUxDSSFtuVyVCjHTMhwx3eP3YSPo5ffwbPcnKfcdrD06WwUSn72T5EBNe3jcgjL54rmxFM6u3nUAoNBps8qJ1PD
secret_key: 560027d81c277de7378f71cbf12a32e4f7f541de724be59bcfdbfdc925425f30
http_timeout: 60s
skip_verify_tls: false
print_response_limit: 1024

2
docs/configuration.md
View file

@ -389,7 +389,6 @@ http_logging:
max_log_size: 20
gzip: true
destination: stdout
log_response: true
```
| Parameter | Type | SIGHUP reload | Default value | Description |
@ -399,7 +398,6 @@ http_logging:
| `max_log_size` | int | yes | 50 | Log file size threshold (in megabytes) to be moved in backup file. After reaching threshold, initial filename is appended with timestamp. And new empty file with initial name is created. |
| `gzip` | bool | yes | false | Whether to enable Gzip compression to backup log files. |
| `destination` | string | yes | stdout | Specify path for log output. Accepts log file path, or "stdout" and "stderr" reserved words to print in output streams. File and folders are created if necessary. |
| `log_response` | bool | yes | true | Whether to attach response body to the log. |
### `cache` section

5
docs/playback.md
View file

@ -31,14 +31,15 @@ If corresponding flag is set, it overrides parameter from config.
### Configuration parameters
#### Global params
#### Global parameters
| # | Config parameter name | Flag name | Type | Default value | Description |
|---|-----------------------|-----------------|----------|---------------|--------------------------------------------------------|
|---|-----------------------|-----------------|----------|---------------|-------------------------------------------------------------------------------|
| 1 | - | config | string | - | config file path (e.g. `./config/playback.yaml`) |
| 2 | http_timeout | http-timeout | duration | 60s | http request timeout |
| 3 | skip_verify_tls | skip-verify-tls | bool | false | skips tls certificate verification for https endpoints |
| 4 | credentials.accessKey | - | string | - | AWS access key id |
| 5 | credentials.secretKey | - | string | - | AWS secret key |
| 6 | print_response_limit | - | int | 1024 | max response length to be printed in stdout, the rest of body will be omitted |
#### `run` command parameters
| # | Config parameter name | Flag name | Type | Default value | Description |

27
playback/request.go
View file

@ -3,14 +3,18 @@ package playback
import (
"context"
"errors"
"fmt"
"io"
"net/http"
"net/url"
"regexp"
"strconv"
"strings"
"time"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/auth"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/playback/utils"
v4 "github.com/aws/aws-sdk-go-v2/aws/signer/v4"
"github.com/aws/aws-sdk-go-v2/credentials"
)
@ -22,14 +26,15 @@ var (
)
type (
httpBody []byte
LoggedRequest struct {
From string `json:"from"`
URI string `json:"URI"`
Method string `json:"method"`
Payload httpBody `json:"payload,omitempty"`
Response httpBody `json:"response,omitempty"`
Query url.Values `json:"query"`
Body []byte `json:"body"`
Header http.Header `json:"headers"`
Response []byte `json:"response"`
}
Credentials struct {
AccessKey string
@ -39,6 +44,24 @@ type (
multipartKey struct{}
)
func (h *httpBody) UnmarshalJSON(data []byte) error {
unquoted, err := strconv.Unquote(string(data))
if err != nil {
return fmt.Errorf("failed to unquote data: %w", err)
}
isXML, _, err := utils.DetectXML(strings.NewReader(unquoted))
if err != nil {
return fmt.Errorf("failed to detect httpbody type: %w", err)
}
reader := utils.ChooseReader(isXML, strings.NewReader(unquoted))
*h, err = io.ReadAll(reader)
if err != nil {
return fmt.Errorf("failed to unmarshal httpbody: %w", err)
}
return nil
}
func SetCredentials(ctx context.Context, accessKey, secretKey string) context.Context {
return context.WithValue(ctx, contextKey{},
Credentials{

32
playback/utils/utils.go
View file

@ -8,35 +8,45 @@ import (
"io"
)
type nopCloseWriter struct {
io.Writer
}
func (b nopCloseWriter) Close() error {
return nil
}
const BodyRecognizeLimit int64 = 128
func DetectXML(reader io.Reader) (bool, []byte, error) {
checkBuf := bytes.NewBuffer(nil)
token, err := xml.NewDecoder(io.TeeReader(io.LimitReader(reader, BodyRecognizeLimit), checkBuf)).RawToken()
detectBuf := bytes.NewBuffer(nil)
detectReader := io.TeeReader(io.LimitReader(reader, BodyRecognizeLimit), detectBuf)
token, err := xml.NewDecoder(detectReader).RawToken()
if err != nil {
var xmlErr *xml.SyntaxError
if errors.Is(err, io.EOF) || errors.As(err, &xmlErr) {
return false, checkBuf.Bytes(), nil
return false, detectBuf.Bytes(), nil
}
return false, checkBuf.Bytes(), err
return false, detectBuf.Bytes(), err
}
switch token.(type) {
case xml.StartElement, xml.ProcInst:
return true, checkBuf.Bytes(), nil
return true, detectBuf.Bytes(), nil
}
return false, checkBuf.Bytes(), nil
return false, detectBuf.Bytes(), nil
}
func ChooseWriter(isXML bool, body *bytes.Buffer) io.Writer {
func ChooseWriter(isXML bool, bodyWriter io.Writer) io.WriteCloser {
writeCloser := nopCloseWriter{bodyWriter}
if !isXML {
return base64.NewEncoder(base64.StdEncoding, body)
return base64.NewEncoder(base64.StdEncoding, bodyWriter)
}
return body
return writeCloser
}
func ChooseReader(isXml bool, bodyReader io.Reader) io.Reader {
if !isXml {
func ChooseReader(isXML bool, bodyReader io.Reader) io.Reader {
if !isXML {
return base64.NewDecoder(base64.StdEncoding, bodyReader)
}
return bodyReader