Adds one Gatus endpoint per Caddy site block automatically, tagged
group: caddy-sync — the sync only ever adds/removes entries in that
exact group, so anything added by hand (the default external checks,
a custom endpoint) is never touched regardless of what the Caddyfile
looks like. Offered at install time (syncs once immediately) and, if
systemd is available, scheduled via a timer every 15 minutes so a site
added or removed later gets picked up without re-running the installer
— matches the "schedule that checks the Caddyfile" shape asked for.
Domain extraction tracks actual brace depth (reusing the same approach
as remove_service's Caddy block removal) rather than a naive
line-by-line scan, so it correctly skips the global options block and
parenthesized snippet definitions like (authelia) without needing to
special-case them by name.
Verified end-to-end against a real Caddyfile/config.yaml fixture with
the actual mikefarah/yq binary: initial sync adds the right entries
and leaves the default "external" group alone, a second run with no
Caddyfile changes is a true no-op (0 added, 0 removed), and changing
the Caddyfile (removing one site, adding another) correctly adds the
new endpoint and removes only the stale one.
Also fixes a real gap surfaced while building this: ensure_yq (used by
both gatus.sh now and onlyoffice.sh already) checked `command -v yq`
alone, which a box can satisfy with a completely different, incompatible
yq — confirmed live in this environment, Debian/Ubuntu's own `yq`
apt package is kislyuk/yq (a Python jq-wrapper) which silently errors
on mikefarah/yq's `e '.path' file` syntax every caller here depends on.
Now checks the version string actually identifies as mikefarah's
before trusting it, installing to /usr/local/bin (which precedes
/usr/bin on Ubuntu's default PATH) if not. Promoted ensure_yq itself
from onlyoffice.sh (its only previous user) to lib/common.sh now that
gatus.sh needs the same thing, so both share one implementation.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H4k6J1qXXyYxhGEgnJaMvn
Claude
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