feat: Add hidden flag to inject time on query filter

exporter/metrics.go

@@ -50,7 +50,7 @@ func (m *Metrics) init(ctx context.Context, c *cli.Context) {
 
 	m.NewHealthClient(ctx)
 
-	m.lastScrape = time.Now()
+	m.lastScrape = time.Now().Add(c.Duration("time-shift"))
 
 	if len(c.String("slack-token")) > 0 && len(c.String("slack-channel")) > 0 {
 		m.slackToken = c.String("slack-token")

main.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"net/http"
 	"os"
+	"time"
 
 	"github.com/AndreZiviani/aws-health-exporter/exporter"
 	"github.com/prometheus/client_golang/prometheus"
@@ -25,6 +26,8 @@ func main() {
 		&cli.StringFlag{Name: "ignore-events", Usage: "Comma separated list of events to be ignored on all resources"},
 		&cli.StringFlag{Name: "ignore-resources", Usage: "Comma separated list of resources to be ignored on all events, format is dependant on resource type (some are ARN others are Name, check AWS docs)"},
 		&cli.StringFlag{Name: "ignore-resource-event", Usage: "Comma separated list of events to be ignored on a specific resource (format: <event name>:<resource identifier>)"},
+
+		&cli.DurationFlag{Name: "time-shift", Usage: "[INTERNAL] Apply a time delta to event filter instead of looking at previous scrape", Hidden: true, Value: 0 * time.Second},
 	}
 
 	app := &cli.App{