mirror of
https://github.com/tiennm99/alloy-docker-compose.git
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tiennm99
2bb87550c1
Previous step failed in CI because the bare alloy container had no
/var/log/journal, no docker.sock, etc., so loki.source.journal +
discovery.docker exited the process — and --rm wiped the container
before logs could be inspected.
Now: drop --rm, mount the same host paths the prod compose uses, plus
an empty /var/log/journal stand-in. Capture logs unconditionally and
fail only on config-level patterns ('unknown component',
'undefined reference', 'syntax error', etc.). Runtime/component
failures against dummy endpoints are tolerated.
70 lines
2.9 KiB
YAML
70 lines
2.9 KiB
YAML
name: validate
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on:
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push:
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branches: [main]
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pull_request:
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jobs:
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validate:
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runs-on: ubuntu-latest
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env:
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# Dummy values so `compose config` doesn't fail on the `:?required` guards.
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ALLOY_HOSTNAME: ci
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REMOTECFG_URL: https://example.com
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REMOTECFG_ID: ci
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REMOTECFG_USER: "1"
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PROM_URL: https://example.com
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PROM_USER: "1"
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LOKI_URL: https://example.com
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LOKI_USER: "1"
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GRAFANA_TOKEN: x
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steps:
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- uses: actions/checkout@v4
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- name: Validate compose YAML + env interpolation
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run: docker compose config -q
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- name: Extract embedded Alloy config
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uses: mikefarah/yq@v4
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with:
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cmd: yq '.configs.alloy_config.content' docker-compose.yml > config.alloy
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- name: Validate Alloy config syntax
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run: |
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docker run --rm -v "$PWD/config.alloy:/config.alloy:ro" \
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grafana/alloy:v1.10.0 fmt /config.alloy > /dev/null
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- name: Validate Alloy config semantics (parse + load components)
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# `fmt` is syntax-only; this catches bad component refs, wrong arg
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# types, and unknown component types by booting alloy and reading
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# the load log. Component runtime errors against dummy paths /
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# endpoints are tolerated (level=error, level=warn) — only fail on
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# config-level errors that prevent the graph from being built.
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run: |
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# /var/log/journal may not exist on the GHA runner; create empty
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# dir so loki.source.journal can at least open it.
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mkdir -p /tmp/empty-journal
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docker run -d --name alloy-test --privileged \
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-e ALLOY_HOSTNAME -e REMOTECFG_URL -e REMOTECFG_ID -e REMOTECFG_USER \
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-e PROM_URL -e PROM_USER -e LOKI_URL -e LOKI_USER -e GRAFANA_TOKEN \
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-v "$PWD/config.alloy:/etc/alloy/config.alloy:ro" \
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-v /proc:/rootproc:ro -v /sys:/sys:ro -v /:/rootfs:ro \
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-v /var/run/docker.sock:/var/run/docker.sock \
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-v /var/lib/docker:/var/lib/docker:ro \
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-v /tmp/empty-journal:/var/log/journal:ro \
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-v /etc/machine-id:/etc/machine-id:ro \
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grafana/alloy:v1.10.0 \
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run --server.http.listen-addr=127.0.0.1:0 /etc/alloy/config.alloy
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sleep 10
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docker logs alloy-test 2>&1 | tee /tmp/alloy.log
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state=$(docker inspect -f '{{.State.Status}}' alloy-test 2>/dev/null || echo missing)
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docker rm -f alloy-test >/dev/null 2>&1 || true
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if grep -Eq "could not (parse|load|build)|unknown component|component .* not registered|undefined reference|syntax error|expected .* found|cannot evaluate" /tmp/alloy.log; then
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echo "::error::config-level error detected in alloy logs"
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exit 1
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fi
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if [ "$state" != "running" ]; then
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echo "::warning::alloy exited (state=$state) but no config-error pattern matched — treating as runtime failure (tolerated)"
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fi
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