X-Git-Url: https://iankelling.org/git/?a=blobdiff_plain;f=sysd-mail-once;h=3b87eea08dbc7c4f399786d4ce5dc4ecaab84adc;hb=715086df2c8fa349a3ca48ab9dff6d5fc2ad94f0;hp=ccaee0a35de46ed9b33f7fde7bb329cad8e5d1d7;hpb=1fe6b9e27f794f03a7c16759dfeb7d970a6475eb;p=log-quiet

diff --git a/sysd-mail-once b/sysd-mail-once
index ccaee0a..3b87eea 100755
--- a/sysd-mail-once
+++ b/sysd-mail-once
@@ -18,57 +18,91 @@ set -eE -o pipefail
 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
 
 errors=3
-cbase=/var/local/cron-errors
+cbase=$HOME/sysd-mail-once-state
+to=root
 case "$1" in
-    -h|--help)
-        cat <<EOF
-Usage: sysd-log-once [-ERRORS] SERVICE COMMAND
+  -h|--help)
+    cat <<EOF
+Usage: sysd-mail-once [-t TO_ADDRESS] [-ERRORS] SERVICE COMMAND [COMMAND_ARGS...]
 
-Use to wrap systemd timers and to email on repeated failure & success after failure
+For use with systemd timers, to email (with exim) on repeated failure &
+success after failure.
 
-Stores error counts in $c\$error_count
+In the service triggered by the timer, prepend this script to the ExecStart.
+The email will contain the service's logs for the last ERRORS runs.
 
--ERRORS:  ERRORS is the number of failurs to accumulate before mailing the error
+
+Stores error counts in $cbase
+
+-ERRORS:  ERRORS is the number of failurs to accumulate before mailing the error.
+          Default is 3.
+
+-t TO_ADDRESS:  Address to email about errors
 EOF
-        exit 0
-        ;;
-    -[0-9]*)
-        errors=${1#-}
-        shift
-        ;;
+    exit 0
+    ;;
+  -[0-9]*)
+    errors=${1#-}
+    shift
+    ;;
+  -t)
+    to="$2"
+    shift 2
+    ;;
 esac
 service=$1
 shift
 
-c=$cbase/$service
+c=$cbase/$service # c for command file path base
 
-glob="$c[0-9]*"
+glob="${c}[0-9]*"
 arr=($glob); file="${arr[0]}"; [[ $glob != "$file" ]] || file=
-u=${USER:-root}
 [[ -d $cbase ]] || mkdir -p $cbase
 
-cursor=$(journalctl --show-cursor -qn0|sed 's/^\s*--\scursor:\s*//')
-if "$@"; then
-    if [[ $file ]]; then
-        rm -f $file
-        if [[ $file == $c$errors ]]; then
-            echo | mail -s "$HOSTNAME: $service success" $u@localhost
-        fi
+if [[ ! $file ]]; then
+  cursor=$(journalctl --show-cursor -qn0|sed 's/^\s*--\scursor:\s*//')
+fi
+
+code=0
+"$@" || code=$?
+if (( code )); then
+  send_mail=false
+  if [[ $file ]]; then
+    i=${file#"$c"}
+    if (( i < errors )); then
+      new_file=$c$((i+1))
+      mv $file $new_file
+      file=$new_file
+      if [[ $file == $c$errors ]]; then
+        send_mail=true
+      fi
     fi
+  else
+    file=${c}1
+    printf "%s\n" "$cursor" >$file
+    if (( errors == 1 )); then
+      send_mail=true
+    fi
+  fi
+  if $send_mail; then
+      exim -odf -t <<EOF
+To: $to
+From: $USER@$(hostname -f)
+Subject: $HOSTNAME: $service exit code: $code
+
+$(journalctl -u $service.service --after-cursor="$(<$file)")
+EOF
+  fi
 else
-    if [[ $file ]]; then
-        i=${file#$c}
-        if (( i < errors )); then
-            new_file=$c$((i+1))
-            mv $file $new_file
-            file=$new_file
-            if [[ $file == $c$errors ]]; then
-                journalctl -u $service.service --after-cursor=$cursor | \
-                    mail -s "$HOSTNAME: $service failure" $u@localhost
-            fi
-        fi
-    else
-        file=${c}1
-        touch $file
+  if [[ $file ]]; then
+    rm -f $file
+    if [[ $file == $c$errors ]]; then
+      exim -odf -t <<EOF
+To: $to
+From: $USER@$(hostname -f)
+Subject: $HOSTNAME: $service success
+
+EOF
     fi
+  fi
 fi