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scrabble-game/loadtest/Dockerfile
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Ilia Denisov aa137e3558
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R2: load-test harness + contour resource observability
New scrabble/loadtest module (the pre-release stress harness): seeds 1000 guest +
10000 durable accounts with pre-created sessions directly in Postgres (token hash
matches backend/internal/session), drives virtual players through the edge protocol
(real 2-4p games assembled via invitations, mid-ranked legal moves generated locally
by the embedded scrabble-solver — the edge carries no board, so the client replays
history), plus nudge/chat/check-word/draft/profile/stats and a gateway-hammer that
verifies the rate limiter. Prints a trip-report summary (per-op latency percentiles,
result codes, live-event tally). Go unit tests cover the pure pieces; the DAWG-backed
move test runs under BACKEND_DICT_DIR.

Contour: add cAdvisor + postgres_exporter + a 'Scrabble - Resources' Grafana
dashboard and the two Prometheus scrape jobs, for the R2/R7 stress-run resource
baseline.

CI: gate ./loadtest/... (path filter + vet/build/test). Docs: TESTING, ARCHITECTURE,
project CLAUDE repo layout.
2026-06-09 23:45:24 +02:00

44 lines
2.0 KiB
Docker

# Multi-stage build for the R2 load harness. Mirrors backend/Dockerfile: a
# golang-alpine builder yields a static binary on distroless nonroot, with the
# dictionary DAWGs baked in from the scrabble-dictionary release (the harness runs
# the same solver as the backend, so it needs the same dictionary). The published
# scrabble-solver module is fetched from Gitea (GOPRIVATE), so the build stage needs
# git and network.
#
# The harness is not a contour service; build and run it ad hoc, from the repo root
# so go.work, pkg/, gateway/ and loadtest/ are in the Docker context:
# docker build -f loadtest/Dockerfile -t scrabble-loadtest .
# docker run --rm --network scrabble-internal -e POSTGRES_PASSWORD=... scrabble-loadtest run
# --- dictionary artifact -----------------------------------------------------
FROM alpine:3.20 AS dawg
ARG DICT_VERSION=v1.0.0
RUN apk add --no-cache curl tar
RUN mkdir -p /dawg \
&& curl -fsSL -o /tmp/dawg.tar.gz \
"https://gitea.iliadenisov.ru/developer/scrabble-dictionary/releases/download/${DICT_VERSION}/scrabble-dawg-${DICT_VERSION}.tar.gz" \
&& tar xzf /tmp/dawg.tar.gz -C /dawg
# --- build -------------------------------------------------------------------
FROM golang:1.26.3-alpine AS build
WORKDIR /src
# git: the published solver module is fetched from Gitea directly (GOPRIVATE).
RUN apk add --no-cache git
ENV GOPRIVATE=gitea.iliadenisov.ru/*
COPY go.work go.work.sum ./
COPY pkg ./pkg
COPY gateway ./gateway
COPY loadtest ./loadtest
# Reduce the workspace to what the harness needs: loadtest + gateway (edge proto) + pkg.
RUN go work edit -dropuse=./backend -dropuse=./platform/telegram
RUN CGO_ENABLED=0 GOOS=linux go build -trimpath -o /out/loadtest ./loadtest/cmd/loadtest
# --- runtime -----------------------------------------------------------------
FROM gcr.io/distroless/static-debian12:nonroot
COPY --from=build /out/loadtest /usr/local/bin/loadtest
COPY --from=dawg /dawg /opt/dawg
ENV LOADTEST_DAWG_DIR=/opt/dawg
ENTRYPOINT ["/usr/local/bin/loadtest"]