mirror of
https://github.com/jmcorgan/fips.git
synced 2026-10-05 11:08:25 +00:00
Johnathan Corgan
0c3c0c79c0
Image builds in CI pull base images from Docker Hub and ghcr.io and fetch packages from distribution mirrors, and each has failed a leg for a few seconds at a time: a registry dial timeout, a 502, an apt file truncated mid-fetch. A single failed build failed the leg, and a rerun of the whole workflow was the only recovery. Add retry_build to testing/lib/image-build.sh: up to three attempts with 10 s and then 20 s between them, whole-build so the base is resolved again and every package-fetching RUN step runs again. It is quiet on a first-attempt success, prints each failed attempt and a recovery to stderr, and on GitHub Actions also raises a warning on the run summary when a build recovered, so recovered failures remain countable. It never wraps a test or a container start. Use it for the shared test images in the integration job, the deb-install and dns-resolver runtime images, and the package builder image. Each deb-install and dns-resolver attempt prints its captured output on failure, so a recovered failure still shows its cause. The NAT, nostr publish-consume and STUN fault suites built their lab images inside `docker compose up --build`: the relay image from ghcr.io and Alpine, the STUN server from the Python image, and the routers from Debian with apt. Build the profile's images first through retry_build, then bring the lab up with --no-build. The start is not retried, since a container that fails to start is a test result; only the build is.
96 lines
3.7 KiB
Bash
96 lines
3.7 KiB
Bash
#!/bin/bash
|
|
# Shared helpers for building test images and starting test containers.
|
|
#
|
|
# Source this file to get dump_output(), run_quiet(), build_inline() and
|
|
# retry_build():
|
|
# source "$SCRIPT_DIR/../lib/image-build.sh"
|
|
# echo "$dockerfile" | run_quiet "docker build -t $tag" \
|
|
# docker build -t "$tag" -f - "$REPO_ROOT"
|
|
# retry_build "docker build $tag" docker build -t "$tag" "$context"
|
|
#
|
|
# A build or a container start that fails for a reason outside the project,
|
|
# such as a registry timeout, is indistinguishable from one the project caused
|
|
# unless its output survives. dump_output and run_quiet keep a command quiet
|
|
# when it succeeds and print everything it said when it fails.
|
|
#
|
|
# Image builds reach Docker Hub, ghcr.io and distribution mirrors, and every one
|
|
# of those has timed out or served a truncated file in CI for a few seconds at a
|
|
# time. retry_build runs a whole build again after such a failure, so the base
|
|
# image is resolved again and each RUN step that fetched packages runs again.
|
|
|
|
# Emit a captured output file to stderr, delimited and labelled with the
|
|
# command it came from. Callers use this only on failure: a command that
|
|
# succeeds leaves no trace, so the suite stays quiet when it is green.
|
|
dump_output() {
|
|
local label="$1" file="$2"
|
|
{
|
|
echo " --- $label failed; captured output follows ---"
|
|
if [ -s "$file" ]; then
|
|
cat "$file"
|
|
else
|
|
echo " (no output)"
|
|
fi
|
|
echo " --- end captured output ---"
|
|
} >&2
|
|
}
|
|
|
|
# Run a command with both streams captured. Discard the capture on success;
|
|
# on failure emit it, so the reason a build or a container start died is not
|
|
# thrown away. Stdin is inherited, so a caller may pipe into it.
|
|
run_quiet() {
|
|
local label="$1"
|
|
shift
|
|
local out rc=0
|
|
out=$(mktemp)
|
|
"$@" >"$out" 2>&1 || rc=$?
|
|
[ "$rc" -eq 0 ] || dump_output "$label" "$out"
|
|
rm -f "$out"
|
|
return "$rc"
|
|
}
|
|
|
|
# Build TAG from the Dockerfile text DOCKERFILE with context CONTEXT, output
|
|
# captured by run_quiet. The text is an argument rather than stdin, so that
|
|
# retry_build can run the build again: a pipe can be read only once.
|
|
build_inline() {
|
|
local tag="$1" dockerfile="$2" context="$3"
|
|
echo "$dockerfile" | run_quiet "docker build -t $tag" \
|
|
docker build -t "$tag" -f - "$context"
|
|
}
|
|
|
|
# Run an image build, and run it again after a failure, up to three attempts
|
|
# with 10 s and then 20 s between them. Use it for builds only: a test or a
|
|
# container start that fails is a result, and running it again would hide it.
|
|
#
|
|
# Every message goes to stderr, because some callers promise that their stdout
|
|
# holds only their result. A first-attempt success prints nothing. A success
|
|
# after a failure says so, and on GitHub Actions also raises a warning on the
|
|
# run summary, so a recovered failure is still counted. Returns the last
|
|
# attempt's exit status.
|
|
retry_build() {
|
|
local label="$1"
|
|
shift
|
|
local attempts=3 attempt=1 rc=0 wait
|
|
while true; do
|
|
rc=0
|
|
if "$@"; then
|
|
if [ "$attempt" -gt 1 ]; then
|
|
echo "image-build: $label recovered on attempt $attempt of $attempts" >&2
|
|
if [ "${GITHUB_ACTIONS:-}" = "true" ]; then
|
|
echo "::warning::image-build: $label recovered on attempt $attempt of $attempts" >&2
|
|
fi
|
|
fi
|
|
return 0
|
|
else
|
|
rc=$?
|
|
fi
|
|
if [ "$attempt" -ge "$attempts" ]; then
|
|
echo "image-build: $label failed on all $attempts attempts (last exit $rc)" >&2
|
|
return "$rc"
|
|
fi
|
|
wait=$((attempt * 10))
|
|
echo "image-build: $label failed on attempt $attempt of $attempts (exit $rc); retrying in ${wait}s" >&2
|
|
sleep "$wait"
|
|
attempt=$((attempt + 1))
|
|
done
|
|
}
|