From 997feec5a52d2dc80cff084831a8b3df81ec28e7 Mon Sep 17 00:00:00 2001
From: raazadarsh <raj.ada@northeastern.edu>
Date: Wed, 31 Jul 2024 17:05:04 -0400
Subject: [PATCH] fix: added graceful shutdown of envoy sidecar for job
 completion

---
 cmd/api/main.go | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/cmd/api/main.go b/cmd/api/main.go
index e5cc71c..31bb1cc 100644
--- a/cmd/api/main.go
+++ b/cmd/api/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"fmt"
+	"net/http"
 	"os"
 	"os/signal"
 	"runtime"
@@ -92,6 +93,24 @@ func main() {
 		<-sigs
 		log.Print("Received shutdown signal, shutting down the application")
 		cancel()
+
+		// Define the endpoint for the Istio Envoy sidecar admin interface
+		istioEndpoint := "http://localhost:15020/quitquitquit"
+
+		// Create a POST request to shut down Envoy
+		req, err := http.NewRequest("POST", istioEndpoint, nil)
+		if err != nil {
+			log.Error().Err(err).Msg("Error creating request")
+		}
+
+		// Send the request using a new client
+		client := &http.Client{}
+		resp, err := client.Do(req)
+		if err != nil {
+			log.Error().Err(err).Msg("Error sending request to Envoy:")
+		}
+		defer resp.Body.Close()
+		log.Info().Msgf("Envoy shutdown response status: %s", resp.Status)
 		os.Exit(0)
 	}()