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package internal
import (
"log"
"os"
"strings"
"time"
)
// isSuppressed checks if alerts should be suppressed based on a file's existence and age.
// Returns true if the file exists AND its modification time is within maxAgeS seconds of now.
// Returns false if filePath is empty, file doesn't exist, or file is too old.
func isSuppressed(filePath string, maxAgeS int) bool {
if filePath == "" {
return false
}
info, err := os.Stat(filePath)
if err != nil {
return false // file doesn't exist or other error
}
age := time.Since(info.ModTime())
return age <= time.Duration(maxAgeS)*time.Second
}
// isCheckSuppressed determines if a check should be suppressed from email reports.
// For Prometheus checks (name starts with "Prometheus"): uses PrometheusOnlyIfNotExists config.
// For regular checks: uses per-check OnlyIfNotExists config if set.
func isCheckSuppressed(name string, conf config) bool {
// Check if this is a Prometheus alert (name starts with "Prometheus")
if strings.HasPrefix(name, "Prometheus") {
if isSuppressed(conf.PrometheusOnlyIfNotExists, conf.PrometheusOnlyIfNotExistsMaxS) {
log.Printf("Suppressing %s: file %s exists and is recent", name, conf.PrometheusOnlyIfNotExists)
return true
}
return false
}
// For regular checks, look up the check config
chk, ok := conf.Checks[name]
if !ok {
return false // check not found in config (e.g., federated)
}
if chk.OnlyIfNotExists == "" {
return false
}
// Use per-check max age if set, otherwise use global Prometheus default
maxAgeS := chk.OnlyIfNotExistsMaxS
if maxAgeS == 0 {
maxAgeS = conf.PrometheusOnlyIfNotExistsMaxS
}
if isSuppressed(chk.OnlyIfNotExists, maxAgeS) {
log.Printf("Suppressing %s: file %s exists and is recent", name, chk.OnlyIfNotExists)
return true
}
return false
}
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