From d3c67fea52abe1340fa233c3696e00f9d2b54ef7 Mon Sep 17 00:00:00 2001
From: satk0 <54475808+satk0@users.noreply.github.com>
Date: Wed, 13 Mar 2024 18:21:59 +0000
Subject: [PATCH] Add unsuccessful metrics to docs metrics (#313)

---
 docker-compose.yml               |  2 +-
 scripts/add_metrics_to_readme.sh | 26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/docker-compose.yml b/docker-compose.yml
index c4842b12..5b1a7508 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -5,7 +5,7 @@ services:
     restart: unless-stopped
     volumes:
       - logstash-data:/usr/share/logstash/data
-      - ./.docker/logstash.conf:/usr/share/logstash/pipeline/logstash.conf:ro
+      - ./.docker/logstash.conf:/usr/share/logstash/pipeline/logstash.conf
       - ./.docker/logstash.yml:/usr/share/logstash/config/logstash.yml:ro
     depends_on:
       - elasticsearch
diff --git a/scripts/add_metrics_to_readme.sh b/scripts/add_metrics_to_readme.sh
index 30eeb60d..54b7c9e4 100755
--- a/scripts/add_metrics_to_readme.sh
+++ b/scripts/add_metrics_to_readme.sh
@@ -9,6 +9,32 @@ function getMetrics() {
     done
 }
 
+function failureConfigChange() {
+	local logstashCID
+	logstashCID=$( docker ps -a | grep 'logstash-exporter-logstash-1' | awk '{print $1}' )
+	local logstashConf
+	logstashConf='/usr/share/logstash/pipeline/logstash.conf'
+	# "logstash pid should be always 1 AFAIK" ~ Kuskoman, 2024
+	local logstashPID
+	logstashPID=1
+
+	docker exec -it "$logstashCID" sh -c "echo 'Wrong Config' >> $logstashConf"
+
+	# reload logstash
+	docker exec -it "$logstashCID" sh -c "kill -1 $logstashPID"
+
+	# bring back previous config 
+	# walk around with 'cp' to avoid replacing config inside container
+	docker exec "$logstashCID" sh -c "sed '\$d' $logstashConf > /tmp/prev_logstash.conf" 
+	docker exec "$logstashCID" sh -c "cp /tmp/prev_logstash.conf $logstashConf"
+
+	# reload logstash
+	docker exec -it "$logstashCID" sh -c "kill -1 $logstashPID"
+
+}
+
+failureConfigChange
+
 FILE=README.md
 while IFS= read -r line; do LINES+=("$line"); done < $FILE