From e21e281bf8d4b84bfecaf2cffd3cbd744feb07a8 Mon Sep 17 00:00:00 2001
From: Valentin Lab <valentin.lab@kalysto.org>
Date: Tue, 2 Apr 2024 16:30:53 +0200
Subject: [PATCH] new: [vps] add ``check backup`` command

---
 bin/vps                 | 66 +++++++++++++++++++++++++++++++++++++++++
 etc/cron.d/check-backup |  4 +++
 2 files changed, 70 insertions(+)
 create mode 100644 etc/cron.d/check-backup

diff --git a/bin/vps b/bin/vps
index d8f9a4a..4af690c 100755
--- a/bin/vps
+++ b/bin/vps
@@ -2615,4 +2615,70 @@ cmdline.spec:monujo:cmd:set-version:run() {
 }
 
 
+
+cmdline.spec::cmd:check:run() {
+    :
+}
+
+cmdline.spec.gnu check
+cmdline.spec:check:cmd:backup:run() {
+
+    : :optfla: --notify,-n      "Send result through notify"
+    : :optval: --service,-s      "The backup service name (defaults to 'rsync-backup')"
+
+    ## ALERT if backup is set and last backup is older than 24h
+
+    local STATE_FILE="/var/run/myc-manage/backup.state"
+    mkdir -p "${STATE_FILE%/*}"
+
+    service=${opt_service:-rsync-backup}
+    project_name=$(compose:project_name) || exit 1
+
+    ## check if service exists in compose.yml
+    if ! compose:service:exists "$project_name" "$service"; then
+        warn "no service ${DARKYELLOW}$service${NORMAL}. Ignoring."
+        return 0
+    fi
+
+    last_backup_datetime=$(
+        cat /srv/datastore/data/cron/var/log/cron/*rsync-backup_script{_*,}.log | grep "total size is" | sort | tail -n 1 | cut -f -2 -d " ")
+    last_backup_ts=$(date -d "$last_backup_datetime" +%s)
+    max_ts=$(date -d "24 hours ago" +%s)
+
+    state="ok"
+    if [ "$last_backup_ts" -lt "$max_ts" ]; then
+        state="ko"
+    fi
+
+    if [ -z "$opt_notify" ]; then
+        if [ "$state" == "ok" ]; then
+            info "Everything is ${GREEN}ok${NORMAL}. (last backup: ${DARKCYAN}$last_backup_datetime${NORMAL})"
+            return 0
+        fi
+        warn "Last backup older than 1 day. (last backup: ${DARKCYAN}$last_backup_datetime${NORMAL})"
+        return 1
+    fi
+
+    ## notify
+
+    last_state=$(cat "$STATE_FILE" 2>/dev/null) || true
+    if [ "$state" == "$last_state" ]; then
+       [ "$state" == "ko" ] || return 0
+       is_old=$(find "$STATE_FILE" -type f -mtime +2) || return 1
+       [ -n "$is_old" ] || return 0
+    fi
+
+    echo "$state" > "$STATE_FILE"
+
+    message="[$(hostname)]: WARNING no backup done in the last 24h (No backup since $days days and $hours hours)"
+
+    timestamp=$(date +%s)
+    time_difference=$((timestamp - last_backup_ts))
+    days=$((time_difference / 86400))
+    hours=$((time_difference % 86400 / 3600))
+    message="WARNING: no backup done in the last 24h (No backup since $days days and $hours hours)"
+    send -c check.alert -t "ALERT Backup" "$message"
+}
+
+
 cmdline::parse "$@"
diff --git a/etc/cron.d/check-backup b/etc/cron.d/check-backup
new file mode 100644
index 0000000..0960869
--- /dev/null
+++ b/etc/cron.d/check-backup
@@ -0,0 +1,4 @@
+SHELL=/bin/bash
+PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
+
+12 * * * *   root   vps check backup -n 2>&1 | logger -t stats
\ No newline at end of file