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@ -1,49 +1,82 @@
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#!/usr/bin/env bash
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#
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# For help and usage information, simply execute the script w/o any arguments.
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#
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# This script is intended to be run by podman developers who need to debug
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# problems specifically related to Cirrus-CI automated testing. However,
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# because it's only loosely coupled to the `.cirrus.yml` configuration, it must
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# orchestrate VMs in GCP directly. This means users need to have
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# pre-authorization (access) to manipulate google-cloud resoures. Additionally,
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# there are no guarantees it will remain in-sync with other automation-related
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# scripts. Therefore it may not always function for everybody in every
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# future scenario without updates/modifications/tweaks.
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set -e
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RED="\e[1;36;41m"
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YEL="\e[1;33;44m"
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RED="\e[1;31m"
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YEL="\e[1;32m"
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NOR="\e[0m"
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USAGE_WARNING="
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${YEL}WARNING: This will not work without local sudo access to run podman,${NOR}
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${YEL}and prior authorization to use the libpod GCP project. Also,${NOR}
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${YEL}possession of the proper ssh private key is required.${NOR}
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${YEL}WARNING: This will not work without podman,${NOR}
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${YEL}and prior authorization to use the libpod GCP project.${NOR}
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"
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# TODO: Many/most of these values should come from .cirrus.yml
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# These values come from .cirrus.yml gce_instance clause
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ZONE="${ZONE:-us-central1-a}"
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CPUS="2"
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MEMORY="4Gb"
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DISK="200"
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PROJECT="libpod-218412"
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GOSRC="/var/tmp/go/src/github.com/containers/podman"
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GCLOUD_IMAGE=${GCLOUD_IMAGE:-quay.io/cevich/gcloud_centos:latest}
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GCLOUD_SUDO=${GCLOUD_SUDO-sudo}
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GIT_REPO="https://github.com/containers/podman.git"
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# Container image with necessary runtime elements
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GCLOUD_IMAGE="${GCLOUD_IMAGE:-docker.io/google/cloud-sdk:alpine}"
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GCLOUD_CFGDIR=".config/gcloud"
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SCRIPT_FILENAME=$(basename ${BASH_SOURCE[0]})
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HOOK_FILENAME="hook_${SCRIPT_FILENAME}"
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# Shared tmp directory between container and us
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TMPDIR=$(mktemp -d --tmpdir $(basename $0)_tmpdir_XXXXXX)
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TMPDIR=$(mktemp -d --tmpdir ${SCRIPT_FILENAME}_tmpdir_XXXXXX)
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LIBPODROOT=$(realpath "$(dirname $0)/../")
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show_usage() {
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echo -e "\n${RED}ERROR: $1${NOR}"
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echo -e "${YEL}Usage: $SCRIPT_FILENAME <image_name>${NOR}"
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echo ""
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if [[ -r ".cirrus.yml" ]]
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then
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echo -e "${YEL}Some possible image_name values (from .cirrus.yml):${NOR}"
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image_hints
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echo ""
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echo -e "${YEL}Optional:${NOR} If a $HOME/$GCLOUD_CFGDIR/$HOOK_FILENAME executable exists during"
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echo "VM creation, it will be executed remotely after cloning"
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echo "$GIT_REPO. The"
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echo "current local working branch name and commit ID, will be provided as"
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echo "it's arguments."
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fi
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exit 1
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}
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LIBPODROOT=$(realpath "$(dirname ${BASH_SOURCE[0]})/../")
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# else: Assume $PWD is the root of the libpod repository
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[[ "$LIBPODROOT" != "/" ]] || LIBPODROOT=$PWD
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[[ "$LIBPODROOT" != "/" ]] || \
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show_usage "Must execute script from within clone of containers/podman repo."
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# Command shortcuts save some typing (assumes $LIBPODROOT is subdir of $HOME)
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PGCLOUD="$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 $LIBPODROOT:$LIBPODROOT $GCLOUD_IMAGE --configuration=libpod --project=$PROJECT"
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[[ "$UID" -ne 0 ]] || \
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show_usage "Must execute script as a regular (non-root) user."
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[[ "${LIBPODROOT#$HOME}" != "$LIBPODROOT" ]] || \
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show_usage "Clone of containers/podman must be a subdirectory of \$HOME ($HOME)"
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# Disable SELinux labeling to allow read-only mounting of repository files
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PGCLOUD="podman run -it --rm --security-opt label=disable -v $TMPDIR:$TMPDIR -v $HOME/.config/gcloud:/root/.config/gcloud -v $HOME/.config/gcloud/ssh:/root/.ssh -v $LIBPODROOT:$LIBPODROOT:ro $GCLOUD_IMAGE gcloud --configuration=libpod --project=$PROJECT"
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SCP_CMD="$PGCLOUD compute scp"
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showrun() {
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if [[ "$1" == "--background" ]]
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then
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shift
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# Properly escape any nested spaces, so command can be copy-pasted
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echo '+ '$(printf " %q" "$@")' &' > /dev/stderr
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"$@" &
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echo -e "${RED}<backgrounded>${NOR}"
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else
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echo '+ '$(printf " %q" "$@") > /dev/stderr
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"$@"
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fi
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echo '+ '$(printf " %q" "$@") > /dev/stderr
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echo ""
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"$@"
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}
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cleanup() {
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@ -52,6 +85,7 @@ cleanup() {
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wait
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# set GCLOUD_DEBUG to leave tmpdir behind for postmortem
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# shellcheck disable=SC2154
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test -z "$GCLOUD_DEBUG" && rm -rf $TMPDIR
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# Not always called from an exit handler, but should always exit when called
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@ -61,32 +95,18 @@ trap cleanup EXIT
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delvm() {
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echo -e "\n"
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echo -e "\n${YEL}Offering to Delete $VMNAME ${RED}(Might take a minute or two)${NOR}"
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echo -e "\n${YEL}Note: It's safe to answer N, then re-run script again later.${NOR}"
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echo -e "\n${YEL}Offering to Delete $VMNAME${NOR}"
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echo -e "${RED}(Deletion might take a minute or two)${NOR}"
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echo -e "${YEL}Note: It's safe to answer N, then re-run script again later.${NOR}"
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showrun $CLEANUP_CMD # prompts for Yes/No
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cleanup
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}
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show_usage() {
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echo -e "\n${RED}ERROR: $1${NOR}"
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echo -e "${YEL}Usage: $(basename $0) [-m <SPECIALMODE>] [-u <ROOTLESS_USER> ] <image_name>${NOR}"
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echo "Use -m <SPECIALMODE> with a supported value documented in contrib/cirrus/README.md."
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echo "With '-m rootless' must also specify -u <ROOTLESS_USER> with name of user to create & use"
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echo ""
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if [[ -r ".cirrus.yml" ]]
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then
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echo -e "${YEL}Some possible image_name values (from .cirrus.yml):${NOR}"
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image_hints
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echo ""
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fi
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exit 1
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}
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get_env_vars() {
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# Deal with both YAML and embedded shell-like substitutions in values
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# if substitution fails, fall back to printing naked env. var as-is.
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python3 -c '
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import yaml,re
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import sys,yaml,re
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env=yaml.load(open(".cirrus.yml"), Loader=yaml.SafeLoader)["env"]
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dollar_env_var=re.compile(r"\$(\w+)")
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dollarcurly_env_var=re.compile(r"\$\{(\w+)\}")
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@ -98,11 +118,10 @@ class ReIterKey(dict):
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rep=r"{\1}" # Convert env vars markup to -> str.format_map(re_iter_key) markup
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out=ReIterKey()
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for k,v in env.items():
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v=str(v)
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if "ENCRYPTED" not in v:
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out[k]=dollar_env_var.sub(rep, dollarcurly_env_var.sub(rep, v))
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if "ENCRYPTED" not in str(v) and bool(v):
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out[k]=dollar_env_var.sub(rep, dollarcurly_env_var.sub(rep, str(v)))
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for k,v in out.items():
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print("{0}=\"{1}\"".format(k, v.format_map(out)))
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sys.stdout.write("{0}=\"{1}\"\n".format(k, str(v).format_map(out)))
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'
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}
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@ -110,8 +129,14 @@ image_hints() {
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get_env_vars | fgrep '_CACHE_IMAGE_NAME' | awk -F "=" '{print $2}'
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}
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unset VM_IMAGE_NAME
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unset VMNAME
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unset CREATE_CMD
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unset SSH_CMD
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unset CLEANUP_CMD
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declare -xa ENVS
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parse_args(){
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local arg
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echo -e "$USAGE_WARNING"
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if [[ "$USER" =~ "root" ]]
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@ -119,88 +144,43 @@ parse_args(){
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show_usage "This script must be run as a regular user."
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fi
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ENVS="$(get_env_vars)"
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[[ "$#" -ge "1" ]] || \
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show_usage "Must specify at least one command-line parameter."
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[[ "$#" -eq 1 ]] || \
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show_usage "Must specify a VM Image name to use, and the test flavor."
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IMAGE_NAME=""
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ROOTLESS_USER=""
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SPECIALMODE="none"
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for arg
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do
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if [[ "$SPECIALMODE" == "GRABNEXT" ]] && [[ "${arg:0:1}" != "-" ]]
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then
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SPECIALMODE="$arg"
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echo -e "${YEL}Using \$SPECIALMODE=$SPECIALMODE.${NOR}"
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continue
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elif [[ "$ROOTLESS_USER" == "GRABNEXT" ]] && [[ "${arg:0:1}" != "-" ]]
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then
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ROOTLESS_USER="$arg"
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echo -e "${YEL}Using \$ROOTLESS_USER=$ROOTLESS_USER.${NOR}"
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continue
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fi
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case "$arg" in
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-m)
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SPECIALMODE="GRABNEXT"
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;;
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-u)
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ROOTLESS_USER="GRABNEXT"
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;;
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*)
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[[ "${arg:0:1}" != "-" ]] || \
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show_usage "Unknown command-line option '$arg'."
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[[ -z "$IMAGE_NAME" ]] || \
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show_usage "Must specify exactly one image name, got '$IMAGE_NAME' and '$arg'."
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IMAGE_NAME="$arg"
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;;
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esac
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done
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VM_IMAGE_NAME="$1"
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if [[ "$SPECIALMODE" == "GRABNEXT" ]]
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then
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show_usage "Must specify argument to -m option."
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fi
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# Word-splitting is desireable in this case
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# shellcheck disable=SC2207
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ENVS=(
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$(get_env_vars)
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"VM_IMAGE_NAME=$VM_IMAGE_NAME"
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)
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if [[ "$ROOTLESS_USER" == "GRABNEXT" ]]
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then
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show_usage "Must specify argument to -u option."
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fi
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VMNAME="${VMNAME:-${USER}-${VM_IMAGE_NAME}}"
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if [[ -z "$IMAGE_NAME" ]]
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then
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show_usage "No image-name specified."
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fi
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CREATE_CMD="$PGCLOUD compute instances create --zone=$ZONE --image=${VM_IMAGE_NAME} --custom-cpu=$CPUS --custom-memory=$MEMORY --boot-disk-size=$DISK --labels=in-use-by=$USER $VMNAME"
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if [[ "$SPECIALMODE" == "rootless" ]] && [[ -z "$ROOTLESS_USER" ]]
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then
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show_usage "With '-m rootless' must also pass -u <username> of rootless user."
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fi
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if echo "$IMAGE_NAME" | grep -q "image-builder-image"
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then
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echo -e "Creating an image-builder VM, I hope you know what you're doing.\n"
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IBI_ARGS="--scopes=compute-rw,storage-rw,userinfo-email"
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SSHUSER="centos"
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else
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unset IBI_ARGS
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SSHUSER="root"
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fi
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ENVS="$ENVS SPECIALMODE=\"$SPECIALMODE\""
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[[ -z "$ROOTLESS_USER" ]] || \
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ENVS="$ENVS ROOTLESS_USER=$ROOTLESS_USER"
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SETUP_CMD="env $ENVS ADD_SECOND_PARTITIO=True $GOSRC/contrib/cirrus/setup_environment.sh"
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VMNAME="${VMNAME:-${USER}-${IMAGE_NAME}}"
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CREATE_CMD="$PGCLOUD compute instances create --zone=$ZONE --image=${IMAGE_NAME} --custom-cpu=$CPUS --custom-memory=$MEMORY --boot-disk-size=$DISK --labels=in-use-by=$USER $IBI_ARGS $VMNAME"
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SSH_CMD="$PGCLOUD compute ssh $SSHUSER@$VMNAME"
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SSH_CMD="$PGCLOUD compute ssh root@$VMNAME"
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CLEANUP_CMD="$PGCLOUD compute instances delete --zone $ZONE --delete-disks=all $VMNAME"
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}
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# Returns true if user has run an 'init' and has a valid token for
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# the specific project-id and named-configuration argumens in $PGCLOUD.
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function has_valid_credentials() {
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if $PGCLOUD info |& grep -Eq 'Account:.*None'; then
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return 1
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fi
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# It's possible for 'gcloud info' to list expired credentials,
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# e.g. 'ERROR: ... invalid grant: Bad Request'
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if $PGCLOUD auth print-access-token |& grep -q 'ERROR'; then
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return 1
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fi
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return 0
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}
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##### main
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[[ "${LIBPODROOT%%${LIBPODROOT##$HOME}}" == "$HOME" ]] || \
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@ -209,23 +189,17 @@ parse_args(){
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cd "$LIBPODROOT"
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parse_args "$@"
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# Ensure mount-points and data directories exist on host as $USER. Also prevents
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# permission-denied errors during cleanup() b/c `sudo podman` created mount-points
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# owned by root.
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mkdir -p $TMPDIR/${LIBPODROOT##$HOME}
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mkdir -p $TMPDIR/.ssh
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mkdir -p {$HOME,$TMPDIR}/.config/gcloud/ssh
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chmod 700 {$HOME,$TMPDIR}/.config/gcloud/ssh $TMPDIR/.ssh
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cd $LIBPODROOT
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echo -e "\n${YEL}Pulling gcloud image...${NOR}"
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podman pull $GCLOUD_IMAGE
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# Attempt to determine if named 'libpod' gcloud configuration exists
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showrun $PGCLOUD info > $TMPDIR/gcloud-info
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if egrep -q "Account:.*None" $TMPDIR/gcloud-info
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if ! has_valid_credentials
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then
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echo -e "\n${YEL}WARNING: Can't find gcloud configuration for libpod, running init.${NOR}"
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echo -e " ${RED}Please choose "#1: Re-initialize" and "login" if asked.${NOR}"
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echo -e " ${RED}Please choose \"#1: Re-initialize\" and \"login\" if asked.${NOR}"
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showrun $PGCLOUD init --project=$PROJECT --console-only --skip-diagnostics
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# Verify it worked (account name == someone@example.com)
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@ -236,68 +210,52 @@ then
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exit 5
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fi
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# If this is the only config, make it the default to avoid persistent warnings from gcloud
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# If this is the only config, make it the default to avoid
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# persistent warnings from gcloud about there being no default.
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[[ -r "$HOME/.config/gcloud/configurations/config_default" ]] || \
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ln "$HOME/.config/gcloud/configurations/config_libpod" \
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"$HOME/.config/gcloud/configurations/config_default"
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ln "$HOME/.config/gcloud/configurations/config_libpod" \
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"$HOME/.config/gcloud/configurations/config_default"
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fi
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# Couldn't make rsync work with gcloud's ssh wrapper because ssh-keys generated on the fly
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TARBALL=$VMNAME.tar.bz2
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echo -e "\n${YEL}Packing up local repository into a tarball.${NOR}"
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showrun --background tar cjf $TMPDIR/$TARBALL --warning=no-file-changed --exclude-vcs-ignores -C $LIBPODROOT .
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trap delvm INT # Allow deleting VM if CTRL-C during create
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# This fails if VM already exists: permit this usage to re-init
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trap delvm EXIT # Allow deleting VM if CTRL-C during create
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echo -e "\n${YEL}Trying to creating a VM named $VMNAME${NOR}\n${YEL}in GCE region/zone $ZONE${NOR}"
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echo -e "For faster access, export ZONE='something-closer-<any letter>'"
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echo 'List of regions and zones: https://cloud.google.com/compute/docs/regions-zones/'
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echo -e "${RED}(might take a minute/two. Errors ignored).${NOR}"
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showrun $CREATE_CMD || true # allow re-running commands below when "delete: N"
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echo -e "For faster terminal access, export ZONE='<something-closer>'"
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echo -e 'Zone-list at: https://cloud.google.com/compute/docs/regions-zones/\n'
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if showrun $CREATE_CMD; then # Freshly created VM needs initial setup
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# Any subsequent failure should prompt for VM deletion
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trap - INT
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trap delvm EXIT
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echo -e "\n${YEL}Waiting up to 30s for ssh port to open${NOR}"
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ATTEMPTS=10
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trap "exit 1" INT
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while ((ATTEMPTS)) && ! $SSH_CMD --command "true"; do
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let "ATTEMPTS--"
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echo -e "${RED}Nope, not yet.${NOR}"
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sleep 3s
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done
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trap - INT
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if ! ((ATTEMPTS)); then
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echo -e "\n${RED}Failed${NOR}"
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exit 7
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fi
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echo -e "${YEL}Got it. Cloning upstream repository as a starting point.${NOR}"
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echo -e "\n${YEL}Waiting up to 30s for ssh port to open${NOR}"
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trap 'COUNT=9999' INT
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ATTEMPTS=10
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for (( COUNT=1 ; COUNT <= $ATTEMPTS ; COUNT++ ))
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do
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if $SSH_CMD --command "true"; then break; else sleep 3s; fi
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done
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if (( COUNT > $ATTEMPTS ))
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then
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echo -e "\n${RED}Failed${NOR}"
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exit 7
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showrun $SSH_CMD -- "mkdir -p $GOSRC"
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showrun $SSH_CMD -- "git clone --progress $GIT_REPO $GOSRC"
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if [[ -x "$HOME/$GCLOUD_CFGDIR/$HOOK_FILENAME" ]]; then
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echo -e "\n${YEL}Copying hook to VM and executing (ignoring errors).${NOR}"
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$PGCLOUD compute scp "/root/$GCLOUD_CFGDIR/$HOOK_FILENAME" root@$VMNAME:.
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if ! showrun $SSH_CMD -- "cd $GOSRC && bash /root/$HOOK_FILENAME $(git branch --show-current) $(git rev-parse HEAD)"; then
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echo "-e ${RED}Hook exited: $?${NOR}"
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fi
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fi
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fi
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echo -e "${YEL}Got it${NOR}"
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echo -e "\n${YEL}Removing and re-creating $GOSRC on $VMNAME.${NOR}"
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showrun $SSH_CMD --command "rm -rf $GOSRC"
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showrun $SSH_CMD --command "mkdir -p $GOSRC"
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echo -e "\n${YEL}Generating connection script for $VMNAME.${NOR}"
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echo -e "Note: Script can be re-used in another terminal if needed."
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echo -e "${RED}(option to delete VM presented upon exiting).${NOR}"
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# TODO: This is fairly fragile, specifically the quoting for the remote command.
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echo '#!/bin/bash' > $TMPDIR/ssh
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echo "$SSH_CMD -- -t 'cd $GOSRC && exec env \"${ENVS[*]}\" bash -il'" >> $TMPDIR/ssh
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chmod +x $TMPDIR/ssh
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echo -e "\n${YEL}Transferring tarball to $VMNAME.${NOR}"
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wait
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showrun $SCP_CMD $HOME/$TARBALL $SSHUSER@$VMNAME:/tmp/$TARBALL
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echo -e "\n${YEL}Unpacking tarball into $GOSRC on $VMNAME.${NOR}"
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showrun $SSH_CMD --command "tar xjf /tmp/$TARBALL -C $GOSRC"
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echo -e "\n${YEL}Removing tarball on $VMNAME.${NOR}"
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showrun $SSH_CMD --command "rm -f /tmp/$TARBALL"
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echo -e "\n${YEL}Executing environment setup${NOR}"
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showrun $SSH_CMD --command "$SETUP_CMD"
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VMIP=$($PGCLOUD compute instances describe $VMNAME --format='get(networkInterfaces[0].accessConfigs[0].natIP)')
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echo -e "\n${YEL}Connecting to $VMNAME${NOR}\nPublic IP Address: $VMIP\n${RED}(option to delete VM upon logout).${NOR}\n"
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if [[ -n "$ROOTLESS_USER" ]]
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then
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echo "Re-chowning source files after transfer"
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showrun $SSH_CMD --command "chown -R $ROOTLESS_USER $GOSRC"
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echo "Connecting as user $ROOTLESS_USER"
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SSH_CMD="$PGCLOUD compute ssh $ROOTLESS_USER@$VMNAME"
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fi
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showrun $SSH_CMD -- -t "cd $GOSRC && exec env $ENVS bash -il"
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showrun $TMPDIR/ssh
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