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#!/usr/bin/env bash
set -e
RED="\e[1;36;41m"
YEL="\e[1;33;44m"
NOR="\e[0m"
USAGE_WARNING="
${YEL}WARNING: This will not work without local sudo access to run podman,${NOR}
${YEL}and prior authorization to use the dnsname GCP project. Also,${NOR}
${YEL}possession of the proper ssh private key is required.${NOR}
"
# TODO: Many/most of these values should come from .cirrus.yml
ZONE="us-central1-c"
CPUS="2"
MEMORY="4Gb"
DISK="200"
PROJECT="dnsname"
GOSRC="/var/tmp/go/src/github.com/containers/dnsname"
GCLOUD_IMAGE=${GCLOUD_IMAGE:-quay.io/cevich/gcloud_centos:latest}
GCLOUD_SUDO=${GCLOUD_SUDO-sudo}
SSHUSER="root"
# Shared tmp directory between container and us
TMPDIR=$(mktemp -d --tmpdir $(basename $0)_tmpdir_XXXXXX)
DNSNAMEROOT=$(realpath "$(dirname $0)/../")
# else: Assume $PWD is the root of the dnsname repository
[[ "$DNSNAMEROOT" != "/" ]] || DNSNAMEROOT=$PWD
# Command shortcuts save some typing (asumes $DNSNAMEROOT is subdir of $HOME)
PGCLOUD="$GCLOUD_SUDO podman run -it --rm -e AS_ID=$UID -e AS_USER=$USER --security-opt label=disable -v $TMPDIR:$HOME -v $HOME/.config/gcloud:$HOME/.config/gcloud -v $HOME/.config/gcloud/ssh:$HOME/.ssh -v $DNSNAMEROOT:$DNSNAMEROOT $GCLOUD_IMAGE --configuration=dnsname --project=$PROJECT"
SCP_CMD="$PGCLOUD compute scp"
showrun() {
if [[ "$1" == "--background" ]]
then
shift
# Properly escape any nested spaces, so command can be copy-pasted
echo '+ '$(printf " %q" "$@")' &' > /dev/stderr
"$@" &
echo -e "${RED}<backgrounded>${NOR}"
else
echo '+ '$(printf " %q" "$@") > /dev/stderr
"$@"
fi
}
cleanup() {
RET=$?
set +e
wait
# set GCLOUD_DEBUG to leave tmpdir behind for postmortem
test -z "$GCLOUD_DEBUG" && rm -rf $TMPDIR
# Not always called from an exit handler, but should always exit when called
exit $RET
}
trap cleanup EXIT
delvm() {
echo -e "\n"
echo -e "\n${YEL}Offering to Delete $VMNAME ${RED}(Might take a minute or two)${NOR}"
echo -e "\n${YEL}Note: It's safe to answer N, then re-run script again later.${NOR}"
showrun $CLEANUP_CMD # prompts for Yes/No
cleanup
}
image_hints() {
_BIS=$(egrep -m 1 '_BUILT_IMAGE_SUFFIX:[[:space:]+"[[:print:]]+"' \
"$DNSNAMEROOT/.cirrus.yml" | cut -d: -f 2 | tr -d '"[:blank:]')
egrep '[[:space:]]+[[:alnum:]].+_CACHE_IMAGE_NAME:[[:space:]+"[[:print:]]+"' \
"$DNSNAMEROOT/.cirrus.yml" | cut -d: -f 2 | tr -d '"[:blank:]' | \
sed -r -e "s/\\\$[{]_BUILT_IMAGE_SUFFIX[}]/$_BIS/" | sort -u
}
show_usage() {
echo -e "\n${RED}ERROR: $1${NOR}"
echo -e "${YEL}Usage: $(basename $0) <image_name>${NOR}"
echo ""
if [[ -r ".cirrus.yml" ]]
then
echo -e "${YEL}Some possible image_name values (from .cirrus.yml):${NOR}"
image_hints
echo ""
fi
exit 1
}
get_env_vars() {
python -c '
import yaml
env=yaml.load(open(".cirrus.yml"), Loader=yaml.SafeLoader)["env"]
keys=[k for k in env if "ENCRYPTED" not in str(env[k])]
for k,v in env.items():
v=str(v)
if "ENCRYPTED" not in v:
print "{0}=\"{1}\"".format(k, v),
'
}
parse_args(){
echo -e "$USAGE_WARNING"
if [[ "$USER" =~ "root" ]]
then
show_usage "This script must be run as a regular user."
fi
ENVS="$(get_env_vars)"
IMAGE_NAME="$1"
if [[ -z "$IMAGE_NAME" ]]
then
show_usage "No image-name specified."
fi
ENVS="$ENVS SPECIALMODE=\"$SPECIALMODE\""
SETUP_CMD="env $ENVS make"
VMNAME="${VMNAME:-${USER}-${IMAGE_NAME}}"
CREATE_CMD="$PGCLOUD compute instances create --zone=$ZONE --image-project=libpod-218412 --image=${IMAGE_NAME} --custom-cpu=$CPUS --custom-memory=$MEMORY --boot-disk-size=$DISK --labels=in-use-by=$USER $VMNAME"
SSH_CMD="$PGCLOUD compute ssh $SSHUSER@$VMNAME"
CLEANUP_CMD="$PGCLOUD compute instances delete --zone $ZONE --delete-disks=all $VMNAME"
}
##### main
[[ "${DNSNAMEROOT%%${DNSNAMEROOT##$HOME}}" == "$HOME" ]] || \
show_usage "Repo clone must be sub-dir of $HOME"
cd "$DNSNAMEROOT"
parse_args "$@"
# Ensure mount-points and data directories exist on host as $USER. Also prevents
# permission-denied errors during cleanup() b/c `sudo podman` created mount-points
# owned by root.
mkdir -p $TMPDIR/${DNSNAMEROOT##$HOME}
mkdir -p $TMPDIR/.ssh
mkdir -p {$HOME,$TMPDIR}/.config/gcloud/ssh
chmod 700 {$HOME,$TMPDIR}/.config/gcloud/ssh $TMPDIR/.ssh
cd $DNSNAMEROOT
# Attempt to determine if named 'dnsname' gcloud configuration exists
showrun $PGCLOUD info > $TMPDIR/gcloud-info
if egrep -q "Account:.*None" $TMPDIR/gcloud-info
then
echo -e "\n${YEL}WARNING: Can't find gcloud configuration for 'dnsname', running init.${NOR}"
echo -e " ${RED}Please choose '#1: Re-initialize' and 'login' if asked.${NOR}"
echo -e " ${RED}Please set Compute Region and Zone (if asked) to 'us-central1-b'.${NOR}"
echo -e " ${RED}DO NOT set any password for the generated ssh key.${NOR}"
showrun $PGCLOUD init --project=$PROJECT --console-only --skip-diagnostics
# Verify it worked (account name == someone@example.com)
$PGCLOUD info > $TMPDIR/gcloud-info-after-init
if egrep -q "Account:.*None" $TMPDIR/gcloud-info-after-init
then
echo -e "${RED}ERROR: Could not initialize 'dnsname' configuration in gcloud.${NOR}"
exit 5
fi
# If this is the only config, make it the default to avoid persistent warnings from gcloud
[[ -r "$HOME/.config/gcloud/configurations/config_default" ]] || \
ln "$HOME/.config/gcloud/configurations/config_dnsname" \
"$HOME/.config/gcloud/configurations/config_default"
fi
# Couldn't make rsync work with gcloud's ssh wrapper: ssh-keys generated on the fly
TARBALL=$VMNAME.tar.bz2
echo -e "\n${YEL}Packing up local repository into a tarball.${NOR}"
showrun --background tar cjf $TMPDIR/$TARBALL --warning=no-file-changed --exclude-vcs-ignores -C $DNSNAMEROOT .
trap delvm INT # Allow deleting VM if CTRL-C during create
# This fails if VM already exists: permit this usage to re-init
echo -e "\n${YEL}Trying to create a VM named $VMNAME\n${RED}(might take a minute/two. Errors ignored).${NOR}"
showrun $CREATE_CMD || true # allow re-running commands below when "delete: N"
# Any subsequent failure should prompt for VM deletion
trap delvm EXIT
echo -e "\n${YEL}Retrying for 30s for ssh port to open (may give some errors)${NOR}"
trap 'COUNT=9999' INT
ATTEMPTS=10
for (( COUNT=1 ; COUNT <= $ATTEMPTS ; COUNT++ ))
do
if $SSH_CMD --command "true"; then break; else sleep 3s; fi
done
if (( COUNT > $ATTEMPTS ))
then
echo -e "\n${RED}Failed${NOR}"
exit 7
fi
echo -e "${YEL}Got it${NOR}"
echo -e "\n${YEL}Removing and re-creating $GOSRC on $VMNAME.${NOR}"
showrun $SSH_CMD --command "rm -rf $GOSRC"
showrun $SSH_CMD --command "mkdir -p $GOSRC"
echo -e "\n${YEL}Transfering tarball to $VMNAME.${NOR}"
wait
showrun $SCP_CMD $HOME/$TARBALL $SSHUSER@$VMNAME:/tmp/$TARBALL
echo -e "\n${YEL}Unpacking tarball into $GOSRC on $VMNAME.${NOR}"
showrun $SSH_CMD --command "tar xjf /tmp/$TARBALL -C $GOSRC"
echo -e "\n${YEL}Removing tarball on $VMNAME.${NOR}"
showrun $SSH_CMD --command "rm -f /tmp/$TARBALL"
echo -e "\n${YEL}Executing environment setup${NOR}"
showrun $SSH_CMD --command "$SETUP_CMD"
VMIP=$($PGCLOUD compute instances describe $VMNAME --format='get(networkInterfaces[0].accessConfigs[0].natIP)')
echo -e "\n${YEL}Connecting to $VMNAME${NOR}\nPublic IP Address: $VMIP\n${RED}(option to delete VM upon logout).${NOR}\n"
showrun $SSH_CMD -- -t "cd $GOSRC && exec env $ENVS bash -il"
|
