69 lines
2.4 KiB
Text
69 lines
2.4 KiB
Text
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#!/bin/bash
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# {{ healthcheck_name }} — {{ healthcheck_description }}
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# Managed by Ansible (roles/healthcheck). Do not edit on the host.
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#
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# The exit code is the real answer; systemd stores it:
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# systemctl is-failed {{ healthcheck_name }}-healthcheck.service
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# The push below is an optional extra, and having no URL is normal.
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set -uo pipefail
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LOG_FILE="{{ healthcheck_log_dir }}/{{ healthcheck_name }}.log"
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PUSH_URL="${HEALTHCHECK_PUSH_URL:-}"
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PUSH_TOKEN="${HEALTHCHECK_PUSH_TOKEN:-}"
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log() { echo "$(date '+%Y-%m-%d %H:%M:%S') - $*" >> "$LOG_FILE"; }
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# Report to Gatus as an external endpoint. Note this is a POST with a bearer
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# token, not a GET with a query string - it is not the shape Uptime Kuma used.
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report() {
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local success="$1" message="$2"
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# No push URL is normal, not an error: the exit code below is a complete
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# answer for anything reading unit state.
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[ -n "$PUSH_URL" ] || return 0
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local encoded
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encoded=$(printf '%s' "$message" | sed 's/%/%25/g; s/ /%20/g; s/&/%26/g; s/+/%2B/g; s/#/%23/g')
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local code
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code=$(curl -s -o /dev/null -w '%{http_code}' -X POST \
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--max-time 15 --retry 2 --retry-delay 3 \
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-H "Authorization: Bearer ${PUSH_TOKEN}" \
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"${PUSH_URL}?success=${success}&error=${encoded}" 2>/dev/null)
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if [ "$code" = "200" ]; then
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log "reported success=${success}"
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else
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log "ERROR: report failed (HTTP ${code})"
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return 1
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fi
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}
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# ── the check ────────────────────────────────────────────────────────────────
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#
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# The blank line before the closing brace below is load-bearing. Jinja strips an
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# included template's trailing newline, and trim_blocks (on by default in
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# Ansible) then eats the newline after {% raw %}{% endif %}{% endraw %} - so without it the brace lands
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# on the same line as the check body's last statement, producing `return 0}` and
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# a script that dies with "syntax error: unexpected end of file".
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check() {
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{% if healthcheck_check %}
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{% include 'checks/' ~ healthcheck_check ~ '.sh.j2' %}
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{% else %}
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{{ healthcheck_command }}
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{% endif %}
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}
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MESSAGE=""
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if check; then
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log "OK${MESSAGE:+ - $MESSAGE}"
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report "true" "${MESSAGE:-ok}"
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exit 0
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else
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log "FAILED${MESSAGE:+ - $MESSAGE}"
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report "false" "${MESSAGE:-check failed}"
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exit 1
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fi
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