61 lines
1.6 KiB
Bash
Executable File
61 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
|
|
# buildctl-daemonless.sh spawns ephemeral buildkitd for executing buildctl.
|
|
#
|
|
# Usage: buildctl-daemonless.sh build ...
|
|
#
|
|
# Flags for buildkitd can be specified as $BUILDKITD_FLAGS .
|
|
#
|
|
# The script is compatible with BusyBox shell.
|
|
set -eu
|
|
|
|
: ${BUILDCTL=buildctl}
|
|
: ${BUILDCTL_CONNECT_RETRIES_MAX=10}
|
|
: ${BUILDKITD=buildkitd}
|
|
: ${BUILDKITD_FLAGS=}
|
|
: ${ROOTLESSKIT=rootlesskit}
|
|
|
|
# $tmp holds the following files:
|
|
# * pid
|
|
# * addr
|
|
# * log
|
|
tmp=$(mktemp -d /tmp/buildctl-daemonless.XXXXXX)
|
|
trap "kill \$(cat $tmp/pid); wait \$(cat $tmp/pid) || true; rm -rf $tmp" EXIT
|
|
|
|
startBuildkitd() {
|
|
addr=
|
|
helper=
|
|
if [ $(id -u) = 0 ]; then
|
|
addr=unix:///run/buildkit/buildkitd.sock
|
|
else
|
|
addr=unix://$XDG_RUNTIME_DIR/buildkit/buildkitd.sock
|
|
helper=$ROOTLESSKIT
|
|
fi
|
|
$helper $BUILDKITD $BUILDKITD_FLAGS --addr=$addr >$tmp/log 2>&1 &
|
|
pid=$!
|
|
echo $pid >$tmp/pid
|
|
echo $addr >$tmp/addr
|
|
}
|
|
|
|
# buildkitd supports NOTIFY_SOCKET but as far as we know, there is no easy way
|
|
# to wait for NOTIFY_SOCKET activation using busybox-builtin commands...
|
|
waitForBuildkitd() {
|
|
addr=$(cat $tmp/addr)
|
|
try=0
|
|
max=$BUILDCTL_CONNECT_RETRIES_MAX
|
|
until $BUILDCTL --addr=$addr debug workers >/dev/null 2>&1; do
|
|
if [ $try -gt $max ]; then
|
|
echo >&2 "could not connect to $addr after $max trials"
|
|
echo >&2 "========== log =========="
|
|
cat >&2 $tmp/log
|
|
exit 1
|
|
fi
|
|
sleep $(awk "BEGIN{print (100 + $try * 20) * 0.001}")
|
|
try=$(expr $try + 1)
|
|
done
|
|
}
|
|
|
|
startBuildkitd
|
|
waitForBuildkitd
|
|
$BUILDCTL --addr=$(cat $tmp/addr) "$@"
|
|
|