lots of stuff

2026-08-16 14:48:04 +02:00
parent c63db540e8
commit 49fa352476
45 changed files with 32520 additions and 93 deletions
@@ -0,0 +1,104 @@
+#!/bin/bash
+
+textfile_dir={{ node_exporter_textfile_dir }}
+
+metric_job=""
+metric_started=0
+metric_bytes=0
+metric_signalled=""
+
+metric_on_signal() {
+    metric_signalled=$1
+    exit $((128 + $1))
+}
+
+metric_install_traps() {
+    trap 'metric_on_signal 1' HUP
+    trap 'metric_on_signal 2' INT
+    trap 'metric_on_signal 15' TERM
+}
+
+metric_status() {
+    if [ -n "${metric_signalled}" ]
+    then
+        echo $((128 + metric_signalled))
+    else
+        echo "$1"
+    fi
+}
+
+log() {
+    echo "[$(date --rfc-3339=seconds)] ${metric_job}: $*"
+}
+
+metric_previous_success() {
+    local file=${textfile_dir}/backup_${metric_job}.prom
+
+    if [ -r "${file}" ]
+    then
+        grep "^backup_last_success_timestamp_seconds{backup_job=\"${metric_job}\"} " "${file}" | awk '{ print $2 }'
+    fi
+}
+
+metric_init() {
+    metric_job=$1
+    metric_started=$(date +%s)
+    mkdir -p ${textfile_dir}
+    metric_install_traps
+    log "start"
+}
+
+metric_archive() {
+    metric_bytes=$(stat -c %s "$1" 2>/dev/null || echo 0)
+}
+
+metric_finish() {
+    local status=$1
+    local now
+    local success
+    local previous
+    local file=${textfile_dir}/backup_${metric_job}.prom
+    local tmp=${file}.$$
+
+    now=$(date +%s)
+    previous=$(metric_previous_success)
+
+    if [ "${status}" -eq 0 ]
+    then
+        success=${now}
+        log "done in $((now - metric_started))s"
+    else
+        success=${previous:-0}
+        log "FAILED with status ${status} after $((now - metric_started))s"
+    fi
+
+    cat > "${tmp}" <<EOF
+# HELP backup_last_run_timestamp_seconds Unix time of the last run of this backup job.
+# TYPE backup_last_run_timestamp_seconds gauge
+backup_last_run_timestamp_seconds{backup_job="${metric_job}"} ${now}
+# HELP backup_last_success_timestamp_seconds Unix time of the last successful run of this backup job.
+# TYPE backup_last_success_timestamp_seconds gauge
+backup_last_success_timestamp_seconds{backup_job="${metric_job}"} ${success}
+# HELP backup_last_duration_seconds Duration of the last run of this backup job.
+# TYPE backup_last_duration_seconds gauge
+backup_last_duration_seconds{backup_job="${metric_job}"} $((now - metric_started))
+# HELP backup_last_status Exit status of the last run of this backup job, 1 is success.
+# TYPE backup_last_status gauge
+backup_last_status{backup_job="${metric_job}"} $([ "${status}" -eq 0 ] && echo 1 || echo 0)
+# HELP backup_last_archive_bytes Size of the archive produced by the last run of this backup job.
+# TYPE backup_last_archive_bytes gauge
+backup_last_archive_bytes{backup_job="${metric_job}"} ${metric_bytes}
+EOF
+
+    chmod 0644 "${tmp}"
+    mv "${tmp}" "${file}"
+}
+
+metric_guard() {
+    local raw=$?
+    local status
+
+    status=$(metric_status ${raw})
+    metric_finish ${status}
+    exit ${status}
+}