From 6af0f124675b6741dc8f683df902628dfc7e8eb7 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 6 Apr 2017 12:02:08 +0200
Subject: Implement bbot agent monitoring

---
 buildos | 42 ++++++++++++++++++++++++++++--------------
 1 file changed, 28 insertions(+), 14 deletions(-)

(limited to 'buildos')

diff --git a/buildos b/buildos
index 893ccc6..b0095a0 100755
--- a/buildos
+++ b/buildos
@@ -640,9 +640,10 @@ function bbot_start () # <toolchain-name>
 	info "failed to stop bbot-agent@$tn service, assuming not running"
       fi
 
+      # We may not be able to uninstall if we previously failed to build.
+      #
       if ! bpkg uninstall "${vars[@]}" bbot; then
-	info "failed to uninstall bbot agent"
-	break
+	info "failed to uninstall bbot agent, assuming not installed"
       fi
     fi
 
@@ -692,19 +693,14 @@ function bbot_start () # <toolchain-name>
     fi
 
     # Start the service. With Type=simple start returns as soon as the process
-    # has forked. To see if the service actually started we wait a bit and
-    # check with status.
+    # has forked. To see if the service actually started is done as part of
+    # service monitoring.
     #
     if ! sudo systemctl start "bbot-agent@$tn"; then
       info "failed to start bbot-agent@$tn service"
       break
     fi
 
-    if ! sudo systemctl status "bbot-agent@$tn"; then
-      info "failed to start bbot-agent@$tn service"
-      break
-    fi
-
     r=0
     break
   done
@@ -779,7 +775,7 @@ EOF
 	#
 	info "bootstrapping $tn toolchain..."
 
-	toolchain_bootstrap "$tn" 2>&1 | tee "$tr/bootstrap-$count.log" 1>&2
+	toolchain_bootstrap "$tn" 2>&1 | tee "$tr/toolchain-$count.log" 1>&2
 
 	if [ "${PIPESTATUS[0]}" -eq 0 ]; then
 	  v="$(cat $tr/version)"
@@ -794,7 +790,7 @@ EOF
 
 	info "$s"
 	email "$s" <<EOF
-$tn.bootstrap_log: tftp://$hname/toolchain/$tn/bootstrap-$count.log
+$tn.toolchain_log: tftp://$hname/toolchain/$tn/toolchain-$count.log
 EOF
       fi
     else
@@ -804,7 +800,7 @@ EOF
   done
 
   # If we have boostrapped all the toolchains, (re)build and (re)start their
-  # bbot agents.
+  # bbot agents and then monitor them.
   #
   if [ "${#toolchain_names[@]}" -eq "${#toolchain_boots[@]}" ]; then
 
@@ -822,7 +818,25 @@ EOF
       case "${PIPESTATUS[0]}" in
 	0)
 	  rm -f "$tr/bbot-$count.log"
-	  continue # Nothing to do.
+
+	  # Check if the service has failed.
+	  #
+	  if sudo systemctl is-failed --quiet "bbot-agent@$tn"; then
+	    s="bbot-agent@$tn service has failed, stopping"
+
+	    # Note: ignore errors.
+	    #
+	    sudo systemctl status "bbot-agent@$tn" 2>&1 | \
+	      tee "$tr/bbot-$count.log" 1>&2
+
+	    # Reset it so that we don't keep sending the log on each
+	    # iteration. Note: ignore errors.
+	    #
+	    sudo systemctl reset-failed "bbot-agent@$tn" 2>&1 | \
+	      tee -a "$tr/bbot-$count.log" 1>&2
+	  else
+	    continue # Nothing to do.
+	  fi
 	  ;;
 	1)
 	  s="re"
@@ -847,7 +861,7 @@ EOF
 
       info "$s"
       email "$s" <<EOF
-$tn.start_log: tftp://$hname/toolchain/$tn/bbot-$count.log
+$tn.bbot_log: tftp://$hname/toolchain/$tn/bbot-$count.log
 EOF
     done
   fi
-- 
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