Commit graph

2 commits

Author SHA1 Message Date
screentinker 58fdf8122c
Install statistics: send on opt-in, name a blocked firewall, and add an operator collector (#268)
Three changes, all about the same failure: sharing appears to be on while nothing
actually arrives.

SEND ON OPT-IN. Turning sharing on now reports immediately instead of waiting for
the next daily tick. Two reasons: the operator is standing right there, and
"nothing has been sent" for the next 24h reads as broken at exactly the moment
someone is checking whether it works. It also means an egress-filtered network
fails HERE, where we can name the host to unblock, rather than silently tonight
where nobody is watching.

NAME THE FAILURE. Failed attempts are now recorded separately from successes, so
Settings can say which address did not answer and why, instead of showing an empty
"nothing sent yet". A blocked outbound connection is the normal failure on a
self-hosted box and is otherwise completely invisible — the operator cannot tell a
firewall from a broken feature. A later success clears the complaint, so a stale
warning never outlives the problem it describes. Docs gained a section on it, and
the UI states plainly that nothing needs opening inbound.

OPERATOR COLLECTOR, ADDITIVE. TELEMETRY_EXTRA_ENDPOINT lets an operator post the
same three fields to their own collector.

The naming is the point. It replaces TELEMETRY_ENDPOINT, which was a true override
— and an override is the wrong shape here, because a variable called "endpoint"
that silently redirected the report someone agreed to SHARE would make the opt-in
mean something other than what the UI says. Our address is hard-wired and not
overridable; theirs is explicitly additional and named so it cannot be mistaken for
a replacement. Settings lists every destination a report goes to.

The operator collector is independent of the sharing switch, because it is their
server posting to their host and our opt-in has no business gating it. So an
operator who wants internal fleet numbers with nothing leaving for us sets it and
leaves sharing off — supported on purpose, and tested.

Destinations are attempted separately: one unreachable collector must not cost the
other its report.

1662/1662 pass. Tests pin the properties that matter: an operator collector never
replaces the shared report, sharing-off still sends nothing to us whatever else is
configured, one dead destination does not stop the other, and a failure records the
address actually tried.
2026-08-13 19:00:37 -05:00
screentinker e9bd8ac8af
Opt-in install statistics (#267)
There is no way to answer "how many screens run ScreenTinker?". The product is
self-hostable by design, so most installs are invisible to us on purpose — and
should stay that way. This asks once, and reports only if the operator says yes.

The entire payload is three fields:

    { instance_id, version, screen_count }

instance_id is a random UUID minted on first use and kept in app_settings. It
carries nothing about the install; its only job is to let two reports from the
same server be recognised as one server, so a count is a count rather than a sum
of duplicates. That makes a report pseudonymous rather than anonymous, and the
wording shown to operators says so rather than claiming otherwise.

The payload is short on purpose. Every field added costs participation, and
participation is the only thing that makes the resulting number worth quoting.
Player-platform counts were considered and left out: release assets are already
published per platform, so GitHub's per-asset download counts answer "where should
effort go" at zero privacy cost and without asking anyone for anything.

Verifiability is the feature, not the copy. Settings shows the ACTUAL payload this
server would send, generated live from its own data, plus what it last really sent
and when. The payload is built in one function so a reviewer can check it at a
glance, and the test fails if a field is ever added.

Both answers persist. Declining is remembered as 'off' rather than falling back to
'unasked', so the prompt cannot return after an update — re-prompting is how
telemetry earns its reputation and gets patched out.

Collector side is inert unless TELEMETRY_COLLECTOR=1, so a normal install never
exposes the endpoint. Reports upsert on instance_id rather than appending, so an
install reporting daily occupies one row rather than 365 a year. The source IP is
never read or stored — receiving one is unavoidable, logging it would quietly turn
a pseudonymous report into an identifiable one.

Tests pin the negative promises, which are the ones that rot silently: sends
nothing before consent, sends nothing after a decline, payload is exactly three
keys, id survives a restart, a failed send never records a phantom report. Screen
count excludes unpaired provisioning rows, which would otherwise overstate the one
number this exists to state honestly.

docs/telemetry.md documents the payload, what is not sent, how to verify it, and
that any published total is a floor rather than a basis for extrapolation.

1657/1657 pass.
2026-08-13 17:27:10 -05:00