-
Notifications
You must be signed in to change notification settings - Fork 34
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
feat(notification): add rate-limiting
- Loading branch information
Showing
8 changed files
with
129 additions
and
42 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| package ratelimiter | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "net/url" | ||
| "strconv" | ||
| "time" | ||
|
|
||
| "github.com/rs/zerolog/log" | ||
| "github.com/sethvargo/go-limiter/memorystore" | ||
| ) | ||
|
|
||
| // RateLimiter is an interface use to apply rate limiting | ||
| type RateLimiter interface { | ||
| Take(ctx context.Context, key string) (tokens, remaining, reset uint64, ok bool, err error) | ||
| Close(ctx context.Context) error | ||
| } | ||
|
|
||
| // NewWebScraper create new Web Scraping service | ||
| func NewRateLimiter(uri string) (RateLimiter, error) { | ||
| if uri == "" { | ||
| return nil, nil | ||
| } | ||
| u, err := url.ParseRequestURI(uri) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("invalid configuration URI: %s", uri) | ||
| } | ||
|
|
||
| tokens := uint64(1) | ||
| if val := u.Query().Get("tokens"); val != "" { | ||
| tokens, _ = strconv.ParseUint(string(val), 10, 64) | ||
| } | ||
| interval := time.Hour | ||
| if val := u.Query().Get("interval"); val != "" { | ||
| interval, _ = time.ParseDuration(val) | ||
| } | ||
|
|
||
| switch u.Scheme { | ||
| case "memory": | ||
| store, err := memorystore.New(&memorystore.Config{ | ||
| // Number of tokens allowed per interval. | ||
| Tokens: tokens, | ||
| // Interval until tokens reset. | ||
| Interval: interval, | ||
| }) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| log.Info().Str("component", "rate-limiter").Str("uri", u.Redacted()).Msg("using in memory rate limiter") | ||
| return store, nil | ||
| default: | ||
| return nil, fmt.Errorf("unsupported rate limiter: %s", u.Scheme) | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters