Expose rate limits in uptime-backend config

uptime-backend/src/cmd/uptime_backend/main_bpu.go

@@ -63,7 +63,7 @@ func main() {
 	}
 
 	app.Now = func() time.Time { return time.Now() }
-	app.SubmitCounter = NewAttemptCounter(REQUESTS_PER_PK_HOURLY)
+	app.SubmitCounter = NewAttemptCounter(appCfg.RequestsPerPkHourly)
 
 	whitelist := appCfg.Whitelist
 	app.Whitelist = new(WhitelistMVar)

uptime-backend/src/uptime_backend/app_config.go

@@ -80,6 +80,11 @@ func LoadEnv(log logging.EventLogger) AppConfig {
 		loadAwsCredentials(awsCredentialsFile, log)
 	}
 
+	// Set default rate limit if not specified
+	if config.RequestsPerPkHourly == 0 {
+		config.RequestsPerPkHourly = 360
+	}
+
 	return config
 }
 
@@ -90,10 +95,11 @@ type AwsConfig struct {
 }
 
 type AppConfig struct {
-	Aws       *AwsConfig `json:"aws"`
-	GsheetId  string     `json:"gsheet_id"`
-	Whitelist []string   `json:"whitelist"`
-	InMemory  bool       `json:"in_memory"`
+	Aws                *AwsConfig `json:"aws"`
+	GsheetId           string     `json:"gsheet_id"`
+	Whitelist          []string   `json:"whitelist"`
+	InMemory           bool       `json:"in_memory"`
+	RequestsPerPkHourly int        `json:"requests_per_pk_hourly"`
 }
 
 type AwsCredentials struct {

uptime-backend/src/uptime_backend/constants.go

@@ -6,7 +6,6 @@ import (
 )
 
 const MAX_SUBMIT_PAYLOAD_SIZE = 50000000 // max payload size in bytes
-const REQUESTS_PER_PK_HOURLY = 120
 const UPTIME_BACKEND_LISTEN_TO = ":8080"
 const TIME_DIFF_DELTA time.Duration = -5 * time.Minute // -5m
 const WHITELIST_REFRESH_INTERVAL = 10 * time.Minute    // 10m