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tiennm99
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# Conflicts: # server/internal/wsapi/wsapi_test.go # web/src/lib/ws/messages.js # web/src/routes/online/+page.svelte
105 lines
4.3 KiB
Go
105 lines
4.3 KiB
Go
package wsapi
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import "expvar"
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// metricSet is the process's answer to "how is the game actually being
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// played" — the question plans/reports/brainstormer-260921-0016 names as
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// unanswerable with nothing but a dozen scattered slog calls. It is exposed
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// at GET /debug/vars, but only when the operator opts in by setting
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// NOITU_DEBUG_ADDR to a separate listen address: see cmd/noitu-server/main.go.
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// Nothing here is read anywhere in the game logic — a counter that fed a
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// decision back into play would need its own tests for correctness, not just
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// for visibility.
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//
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// expvar's registry is a process-wide singleton by design (see the stdlib
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// package doc), so these are package-level rather than server-instance
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// fields: a second *Server in the same process — every wsapi test — shares
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// one set of counters rather than fighting to register a second one under the
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// same name.
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type metricSet struct {
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connectionsOpen *expvar.Int
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connectionsTotal *expvar.Int
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// roomsLive and roomsTotal are keyed "bot" or "pvp".
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roomsLive *expvar.Map
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roomsTotal *expvar.Map
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// gamesStarted and gamesFinished are keyed the same way.
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gamesStarted *expvar.Map
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gamesFinished *expvar.Map
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wordsSubmitted *expvar.Int
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wordsAccepted *expvar.Int
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// wordsRejected is keyed by game.RejectReason.String(), which is also
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// what the word_rejected log line's reason field carries — one reason
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// vocabulary rather than two.
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wordsRejected *expvar.Map
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// eliminations is keyed by the wire GameEndReason string, since that is
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// the one place "the reconnect window ran out" is told apart from "they
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// resigned" — both are game.EndResigned to the engine underneath.
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eliminations *expvar.Map
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chatLines *expvar.Int
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// deadEndClaims is keyed "true" or "false": whether the claimed position
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// actually had no legal move.
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deadEndClaims *expvar.Map
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// wordsReported counts accepted ReportWord messages — never the refused
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// ones, which cost the sender an error and nothing else.
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wordsReported *expvar.Int
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// joinsRefused is keyed by the same UI error code the client is sent —
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// "too_many_attempts", "room_not_found" or "room_full" — so a reader
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// checking this counter against the frontend copy is checking against the
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// same string, not a second name for it.
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joinsRefused *expvar.Map
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// botMoves is keyed by bot.Difficulty.String().
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botMoves *expvar.Map
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resumesAttempted *expvar.Int
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resumesSucceeded *expvar.Int
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// quickMatchQueued, quickMatchCancelled and quickMatchMatched count the
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// three things that can happen to a QuickMatch: it waits, it is withdrawn
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// (by CancelQuickMatch, a disconnect, or entering a room another way), or
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// it is paired. Matched counts pairings, not players, so it rises by one
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// per room a quick match opened.
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quickMatchQueued *expvar.Int
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quickMatchCancelled *expvar.Int
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quickMatchMatched *expvar.Int
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}
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// metrics is the one instance every call site writes through. Built at
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// package init rather than lazily, so every counter exists — reading at zero
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// — from the moment the process starts, whether or not NOITU_DEBUG_ADDR is
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// ever set.
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var metrics = newMetricSet()
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func newMetricSet() *metricSet {
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return &metricSet{
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connectionsOpen: expvar.NewInt("noitu_connections_open"),
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connectionsTotal: expvar.NewInt("noitu_connections_total"),
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roomsLive: expvar.NewMap("noitu_rooms_live"),
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roomsTotal: expvar.NewMap("noitu_rooms_total"),
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gamesStarted: expvar.NewMap("noitu_games_started"),
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gamesFinished: expvar.NewMap("noitu_games_finished"),
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wordsSubmitted: expvar.NewInt("noitu_words_submitted"),
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wordsAccepted: expvar.NewInt("noitu_words_accepted"),
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wordsRejected: expvar.NewMap("noitu_words_rejected"),
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eliminations: expvar.NewMap("noitu_eliminations"),
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chatLines: expvar.NewInt("noitu_chat_lines"),
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deadEndClaims: expvar.NewMap("noitu_dead_end_claims"),
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wordsReported: expvar.NewInt("noitu_words_reported"),
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joinsRefused: expvar.NewMap("noitu_joins_refused"),
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botMoves: expvar.NewMap("noitu_bot_moves"),
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resumesAttempted: expvar.NewInt("noitu_resumes_attempted"),
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resumesSucceeded: expvar.NewInt("noitu_resumes_succeeded"),
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quickMatchQueued: expvar.NewInt("noitu_quick_match_queued"),
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quickMatchCancelled: expvar.NewInt("noitu_quick_match_cancelled"),
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quickMatchMatched: expvar.NewInt("noitu_quick_match_matched"),
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}
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}
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