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#!/bin/bash
set -e
# Start a local docker instance with the requested arch and distro
# This script is meant to be executed from Jenkins jobs inside TCWG
# lab. It prints shell commands meant to be executed in the parent
# shell, consisting in:
# - a trap statement, to cleanup the container upon exit
# - definition of ${CONTAINER}, used to prefix commands that you want
# to run inside the container.
# - definition of ${session_host} and ${session_port}, can be used for
# a remote connexion to the container
if [ $# -ne 2 -a $# -ne 3 ]; then
echo Usage: $0 arch flavour [host]
echo " arch: architecture (eg: amd64, i386, arm64, armhf)"
echo " flavour: distribution (eg: trusty)"
echo " host: hostname where the container will run, defaults to localhost"
echo " useful if the name resolution does not work correctly"
exit 1
fi
# BUILD_NUMBER, JOB_NAME and WORKSPACE are set by Jenkins
if [ "x$BUILD_NUMBER" = "x" ]; then
echo "BUILD_NUMBER is not defined. Are you executing this from Jenkins ?"
exit 1
fi
if [ "x$JOB_NAME" = "x" ]; then
echo "JOB_NAME is not defined. Are you executing this from Jenkins ?"
exit 1
fi
if [ "x$WORKSPACE" = "x" ]; then
echo "WORKSPACE is not defined. Are you executing this from Jenkins ?"
exit 1
fi
container_arch=$1
distro=$2
session_host=$3
[ x"$session_host" = x ] && session_host=localhost
task="build"
# Save stdout/stderr file descriptors
exec 3>&1 4>&2
# Make sure all output goes to stderr
exec 1>&2
case "${distro}:${task}" in
"trusty":"build")
image=linaro/ci-${container_arch}-tcwg-ubuntu:${distro}
;;
*)
image=linaro/ci-${container_arch}-tcwg-${task}-ubuntu:${distro}
;;
esac
DOCKER="docker -H $session_host:2375"
$DOCKER pull $image
session_name=$(echo $BUILD_NUMBER-$JOB_NAME | sed -e "s#[/=,]#-#g")
session_id=$($DOCKER run --name $session_name -dtP \
-v $HOME/snapshots-ref:$HOME/snapshots-ref:ro \
-v $WORKSPACE:$WORKSPACE \
--memory=7500M --pids-limit=5000 \
$image)
if [ x"$session_id" = x ]; then
exit 1
fi
# Remove the docker instance we have just created in case something
# goes wrong.
trap "$DOCKER rm -fv $session_id ; exec 1>&3 2>&4" EXIT
session_port=$($DOCKER port $session_id 22 | cut -d: -f 2)
rundir="$(pwd -P)"
mydir="$(dirname $0)"
cd "${mydir}"
mydir="$(pwd)"
cd ${rundir}
# Wait until the ssh server is ready to serve connexions
# Make sure connexion messages go to stderr, so that in case of
# success stdout contains only the connexion info expected by the
# caller.
count=20
while [ $count -gt 0 ]
do
sleep 5
expect ${mydir}/check-server.exp ${session_host} ${session_port} && break
echo SSH not ready, waiting.....
count=$((count - 1))
done
if [ $count -eq 0 ]; then
echo SSH server did not respond, exiting
exit 1
fi
# Do not remove the container upon exit: it is now ready
trap EXIT
# Restore stdout/stderr
exec 1>&3 2>&4
cat <<EOF
trap "$DOCKER rm -fv $session_id" EXIT
CONTAINER="ssh -p $session_port -A $session_host"
session_host=${session_host}
session_port=${session_port}
EOF
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