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[#369] Enhanced http requests logging #426

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alexvanin merged 1 commit from nzinkevich/frostfs-s3-gw:feature/9613-enhanced_log into feature/369 2024-09-04 19:51:14 +00:00
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nzinkevich commented 2024-07-15 07:37:34 +00:00
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Signed-off-by: Nikita Zinkevich n.zinkevich@yadro.com

Signed-off-by: Nikita Zinkevich <n.zinkevich@yadro.com>
nzinkevich added 1 commit 2024-07-15 07:37:36 +00:00
[#369] Enhanced http requests logging
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8e2a927334 
Signed-off-by: Nikita Zinkevich <n.zinkevich@yadro.com>
alexvanin changed title from WIP: [#369] Enhanced http requests logging to WIP: [#369] Enhanced http requests logging 2024-07-15 07:48:46 +00:00
alexvanin changed target branch from master to feature/369 2024-07-15 07:48:47 +00:00
dkirillov reviewed 2024-07-15 08:22:32 +00:00
api/middleware/log_http.go Outdated
@ -0,0 +29,4 @@
httplog = withFieldIfExist(httplog, "query", r.URL.Query())
httplog = withFieldIfExist(httplog, "headers", r.Header)
if r.ContentLength != 0 && r.ContentLength <= settings.MaxBody {
dkirillov commented 2024-07-15 08:22:20 +00:00
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Sometimes r.ContentLength can be -1 that means unknown length. Now we will try read body and get panic in withBody when try to allocate new buffer var body = make([]byte, r.ContentLength).

Should we ignore such body or log first settings.MaxBody bytes anyway?

Sometimes `r.ContentLength` can be `-1` that means unknown length. Now we will try read body and get panic in `withBody` when try to allocate new buffer `var body = make([]byte, r.ContentLength)`. Should we ignore such body or log first `settings.MaxBody` bytes anyway?
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api/middleware/log_http.go Outdated
@ -0,0 +44,4 @@
func withBody(httplog *zap.Logger, r *http.Request) (*zap.Logger, error) {
var body = make([]byte, r.ContentLength)
_, err := r.Body.Read(body)
dkirillov commented 2024-07-15 08:17:39 +00:00
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We need close body after read.

Besides, we must preserve initial body in request. After read the body doesn't contain anything and in handlers we get errors. For example:

2024-07-15T11:11:06.778+0300    error   handler/util.go:50      request failed  {"request_id": "07e96f1e-13a7-423c-91f7-b69513209ebd", "method": "PutObject", "bucket": "test", "object": "tmp", "description": "could not upload object", "user": "NbUgTSFvPmsRxmGeWpuuGeJUoRoi6PErcM", "error": "InvalidDigest: 400 => The Content-Md5 you specified is not valid.", "body close errors": [], "status": 400}
We need close body after read. Besides, we must preserve initial body in request. After read the body doesn't contain anything and in handlers we get errors. For example: ``` 2024-07-15T11:11:06.778+0300 error handler/util.go:50 request failed {"request_id": "07e96f1e-13a7-423c-91f7-b69513209ebd", "method": "PutObject", "bucket": "test", "object": "tmp", "description": "could not upload object", "user": "NbUgTSFvPmsRxmGeWpuuGeJUoRoi6PErcM", "error": "InvalidDigest: 400 => The Content-Md5 you specified is not valid.", "body close errors": [], "status": 400} ```
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api/router.go Outdated
@ -129,6 +130,7 @@ type Config struct {
func NewRouter(cfg Config) *chi.Mux {
api := chi.NewRouter()
api.Use(
s3middleware.LogHTTP(cfg.Log, cfg.LogHTTP),
dkirillov commented 2024-07-15 07:59:58 +00:00
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If enabling this middleware being configured only once (and don't support SIGHUP reload) we can add it conditionally (like s3middleware.FrostfsIDValidation)

If enabling this middleware being configured only once (and don't support SIGHUP reload) we can add it conditionally (like `s3middleware.FrostfsIDValidation`)
cmd/s3-gw/app_settings.go Outdated
@ -75,6 +75,9 @@ const ( // Settings.
cfgLoggerLevel = "logger.level"
cfgLoggerDestination = "logger.destination"
cfgLoggerRequestEnabled = "http_logging.enabled"
dkirillov commented 2024-07-15 08:01:03 +00:00
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We should mention this params in config/config.env and docs/configuration.md

We should mention this params in `config/config.env` and `docs/configuration.md`
dkirillov commented 2024-07-15 08:01:27 +00:00
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We should mention this params in config/config.env and docs/configuration.md

We should mention this params in `config/config.env` and `docs/configuration.md`
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cmd/s3-gw/app_settings.go Outdated
@ -76,2 +76,4 @@
cfgLoggerDestination = "logger.destination"
cfgLoggerRequestEnabled = "http_logging.enabled"
cfgLoggerRequestMaxBody = "http_logging.max_body"
dkirillov commented 2024-07-15 08:01:33 +00:00
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We should mention this params in config/config.env and docs/configuration.md

We should mention this params in `config/config.env` and `docs/configuration.md`
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internal/logs/logs.go Outdated
@ -142,3 +103,1 @@
CouldntCacheSubject = "couldn't cache subject info"
UserGroupsListIsEmpty = "user groups list is empty, subject not found"
CouldntCacheUserKey = "couldn't cache user key"
dkirillov commented 2024-07-15 07:55:51 +00:00
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Empty line

Empty line
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nzinkevich added 1 commit 2024-07-16 08:01:46 +00:00
[#369] Write log to file
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95c2fa7fda 
Signed-off-by: Nikita Zinkevich <n.zinkevich@yadro.com>
nzinkevich force-pushed feature/9613-enhanced_log from 95c2fa7fda to ea51fe6e4b 2024-07-16 12:22:27 +00:00 Compare
alexvanin reviewed 2024-07-17 06:36:22 +00:00
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Overall looks quite pretty. I suppose we can merge it in feature branch after comment fixes.

Overall looks quite pretty. I suppose we can merge it in feature branch after comment fixes.
api/middleware/log_http.go Outdated
@ -0,0 +42,4 @@
return func(h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
var err error
config.fileLogger, err = getFileLogger(config)
alexvanin commented 2024-07-17 06:26:30 +00:00
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It looks quite odd for me to see config field initialized by the function, that reads config as a parameter. Either filerLogger should not be a part of config structure or getFileLogger should be defined as function on config struct. Prefer making pure functions when it is possible and reasonable.

I suggest to do something like

func LogHTTP() Func {
  return func() http.Handler {
    fileLogger, err = getFileLogger(config)
    if err != nil {
        // log error and skip this middleware by returing handler with single h.ServerHTTP(w, r) call
    }
    return http.HandlerFunc(func(w, r) {
      log = fileLogger.With(...)
      ...
      h.ServerHTTP(w, r)
    }
It looks quite odd for me to see `config` field initialized by the function, that reads config as a parameter. Either `filerLogger` should not be a part of config structure or `getFileLogger` should be defined as function on config struct. Prefer making [pure functions](https://en.wikipedia.org/wiki/Pure_function) when it is possible and reasonable. I suggest to do something like ```go func LogHTTP() Func { return func() http.Handler { fileLogger, err = getFileLogger(config) if err != nil { // log error and skip this middleware by returing handler with single h.ServerHTTP(w, r) call } return http.HandlerFunc(func(w, r) { log = fileLogger.With(...) ... h.ServerHTTP(w, r) } ```
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api/middleware/log_http.go Outdated
@ -0,0 +112,4 @@
return err
}
config.sinkPath = SinkName + ":" + pth
alexvanin commented 2024-07-17 06:27:51 +00:00
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As previous comment mentioned, try to make this function pure by returing sinkPath instead of config modification. This pattern is valid overall but it doesn't make sense here.

As previous comment mentioned, try to make this function pure by returing `sinkPath` instead of config modification. This pattern is valid overall but it doesn't make sense here.
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docs/configuration.md Outdated
@ -376,0 +389,4 @@
| Parameter | Type | SIGHUP reload | Default value | Description |
|----------------|--------|---------------|---------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `enabled` | bool | yes | false | |
| `max_body` | int | yes | 1024 | Max body size for log output. |
alexvanin commented 2024-07-17 06:33:13 +00:00
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Is it bytes, kilobytes, megabytes?

Is it bytes, kilobytes, megabytes?
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docs/configuration.md Outdated
@ -376,0 +390,4 @@
|----------------|--------|---------------|---------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `enabled` | bool | yes | false | |
| `max_body` | int | yes | 1024 | Max body size for log output. |
| `max_log_size` | int | yes | 50 | Log file size threshold (in Megabytes) to be moved in backup file. |
alexvanin commented 2024-07-17 06:32:28 +00:00
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Where are backup files are stored? Is it in destination dir?

Where are backup files are stored? Is it in destination dir?
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docs/configuration.md Outdated
@ -376,0 +392,4 @@
| `max_body` | int | yes | 1024 | Max body size for log output. |
| `max_log_size` | int | yes | 50 | Log file size threshold (in Megabytes) to be moved in backup file. |
| `gzip` | bool | yes | false | Whether to enable Gzip compression for backup log files. |
| `destination` | string | yes | stdout | Specify path for log output. Accepts path string (maybe even URL - not tested) to log in file, or "stdout" and "stderr" reserved phrases for printing in output stream. |
alexvanin commented 2024-07-17 06:31:15 +00:00
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Do not mention URL if we didn't test it. 😃 Also, can we test it? What do we need to do that?

Also, I suppose destination is a path to dir, not a file, am I right?

Do not mention URL if we didn't test it. 😃 Also, can we test it? What do we need to do that? Also, I suppose `destination` is a path to dir, not a file, am I right?
nzinkevich commented 2024-07-17 07:00:14 +00:00
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destination specifies path with filename e.g. /var/log/http.log. During backup the filename is added with timestamp. And a new file with initial name creates.
I will append this to configuration.md

`destination` specifies path with filename e.g. /var/log/http.log. During backup the filename is added with timestamp. And a new file with initial name creates. I will append this to configuration.md
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nzinkevich force-pushed feature/9613-enhanced_log from ea51fe6e4b to 7e6212264d 2024-07-17 10:49:14 +00:00 Compare
nzinkevich force-pushed feature/9613-enhanced_log from 7e6212264d to e358e0d8b9 2024-07-17 10:56:09 +00:00 Compare
nzinkevich force-pushed feature/9613-enhanced_log from e358e0d8b9 to 6f3bedc023 2024-07-17 12:20:16 +00:00 Compare
nzinkevich changed title from WIP: [#369] Enhanced http requests logging to [#369] Enhanced http requests logging 2024-07-17 12:52:05 +00:00
alexvanin approved these changes 2024-07-18 06:21:22 +00:00
alexvanin merged commit 6f3bedc023 into feature/369 2024-07-18 06:22:26 +00:00
alexvanin deleted branch feature/9613-enhanced_log 2024-07-18 06:22:34 +00:00
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Reference: TrueCloudLab/frostfs-s3-gw#426
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