From 5dc9c59b66b13c6a689174c1bb1b65dbf180af73 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 11 May 2023 12:57:57 +0200
Subject: Start extra bbot-agent instance for priority monitoring

---
 buildos | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/buildos b/buildos
index 6a7bcfb..96cf209 100755
--- a/buildos
+++ b/buildos
@@ -893,7 +893,9 @@ function bbot_start () # <toolchain-name> <toolchain-index>
     #
     if [ "$b_word" = "configured" ]; then
 
-      for ((i=1; i <= ti; i++)); do
+      # Note: stop extra instance.
+      #
+      for ((i=1; i <= ti + 1; i++)); do
 	if ! sudo systemctl stop "bbot-agent-$tn@$i"; then
 	  info "failed to stop bbot-agent-$tn@$i service, assuming not running"
 	  continue
@@ -942,6 +944,7 @@ function bbot_start () # <toolchain-name> <toolchain-index>
 	-e "s/^(Environment=TOOLCHAIN_NUM)=.*/\1=$tx/" \
 	-e "s/^(Environment=TOOLCHAIN_VER)=.*/\1=$tv/" \
 	-e "s/^(Environment=TOOLCHAIN_NAME)=.*/\1=$tn/" \
+	-e "s/^(Environment=INSTANCE_MAX)=.*/\1=$ti/" \
 	-e "s/^(Nice)=.*/\1=$tc/" \
 	-e "s#^ExecStart=[^ ]+(.*)#ExecStart=$id/bin/bbot-agent\1#" \
 	"$id/lib/systemd/system/bbot-agent@.service"
@@ -1019,8 +1022,10 @@ function bbot_start () # <toolchain-name> <toolchain-index>
     # the process has forked. Making sure the service has actually started is
     # done as part of the service monitoring.
     #
+    # Note: start extra instance.
+    #
     r=0
-    for ((i=1; i <= ti; i++)); do
+    for ((i=1; i <= ti + 1; i++)); do
       if ! sudo systemctl start "bbot-agent-$tn@$i"; then
 	info "failed to start bbot-agent-$tn@$i service instance"
 	r=1
@@ -1195,7 +1200,9 @@ EOF
 
 	  # For each service instance check if it has failed.
 	  #
-	  for ((i=1; i <= ti; i++)); do
+	  # Note: check extra instance.
+	  #
+	  for ((i=1; i <= ti + 1; i++)); do
 
 	    if sudo systemctl is-failed --quiet "bbot-agent-$tn@$i"; then
 	      s="bbot-agent-$tn@$i service has failed, stopping"
-- 
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