Reload resources on SIGHUP

rowbot

@@ -106,6 +106,8 @@ while (( $# )); do
   shift
 done
 
+prog_args=( "$@" )
+
 ###
 # default config
 ##
@@ -125,7 +127,7 @@ for file do
     # shellcheck disable=SC1090
     . "$file" # ha, dot file
   else
-    die 'could not locate config file %s' "$file"
+    die "could not locate config file %s" "$file"
   fi
 done
 
@@ -203,7 +205,7 @@ if [[ $reload = yes ]]; then
 fi
 
 ###
-# process management
+# process/resource management
 ###
 
 cleanup() {
@@ -244,6 +246,30 @@ alarm-handler() {
 
 trap alarm-handler ALRM
 
+config-reload() {
+  local file
+  info "received HUP signal"
+
+  for file in "${prog_args[@]}"; do
+    if [[ -f $file ]]; then
+      debug "loading config file %s" "$file"
+      # These files are provided dynamically at run-time.
+      # shellcheck disable=SC1090
+      . "$file"
+    else
+      die "could not locate config file %s" "$file"
+    fi
+  done
+
+  if (( log_fd != 1 )); then
+    debug "closing and re-opening log"
+    exec {log_fd}>&-
+    exec {log_fd}>"$log"
+  fi
+}
+
+trap config-reload HUP
+
 ###
 # net code
 ###