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| -rwxr-xr-x | hack/podman-registry | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/hack/podman-registry b/hack/podman-registry new file mode 100755 index 000000000..e7708ce6a --- /dev/null +++ b/hack/podman-registry @@ -0,0 +1,231 @@ +#! /bin/bash +# +# podman-registry - start/stop/monitor a local instance of registry:2 +# +ME=$(basename $0) + +############################################################################### +# BEGIN defaults + +PODMAN_REGISTRY_IMAGE=docker.io/library/registry:2 + +PODMAN_REGISTRY_USER= +PODMAN_REGISTRY_PASS= +PODMAN_REGISTRY_PORT= + +# Podman binary to run +PODMAN=${PODMAN:-$(type -p podman)} + +# END defaults +############################################################################### +# BEGIN help messages + +missing=" argument is missing; see $ME --help for details" +usage="Usage: $ME [options] [start|stop|ps|logs] + +$ME manages a local instance of a container registry. + +When called to start a registry, $ME will pull an image +into a local temporary directory, create an htpasswd, start the +registry, and dump a series of environment variables to stdout: + + \$ $ME start + PODMAN_REGISTRY_IMAGE=\"docker.io/library/registry:2\" + PODMAN_REGISTRY_PORT=\"5050\" + PODMAN_REGISTRY_USER=\"userZ3RZ\" + PODMAN_REGISTRY_PASS=\"T8JVJzKrcl4p6uT\" + +Expected usage, therefore, is something like this in a script + + eval \$($ME start) + +To stop the registry, you will need to know the port number: + + $ME -P \$PODMAN_REGISTRY_PORT stop + +Override the default image, port, user, password with: + + -i IMAGE registry image to pull (default: $PODMAN_REGISTRY_IMAGE) + -u USER registry user (default: random) + -p PASS password for registry user (default: random) + -P PORT port to bind to (on 127.0.0.1) (default: random, 5000-5999) + +Other options: + + -h display usage message +" + +die () { + echo "$ME: $*" >&2 + exit 1 +} + +# END help messages +############################################################################### +# BEGIN option processing + +while getopts "i:u:p:P:hv" opt; do + case "$opt" in + i) PODMAN_REGISTRY_IMAGE=$OPTARG ;; + u) PODMAN_REGISTRY_USER=$OPTARG ;; + p) PODMAN_REGISTRY_PASS=$OPTARG ;; + P) PODMAN_REGISTRY_PORT=$OPTARG ;; + h) echo "$usage"; exit 0;; + v) verbose=1 ;; + \?) echo "Run '$ME -h' for help" >&2; exit 1;; + esac +done +shift $((OPTIND-1)) + +# END option processing +############################################################################### +# BEGIN helper functions + +function random_string() { + local length=${1:-10} + + head /dev/urandom | tr -dc a-zA-Z0-9 | head -c$length +} + +function podman() { + if [ -z "${PODMAN_REGISTRY_PORT}" ]; then + die "podman port undefined; please invoke me with -P PORT" + fi + + if [ -z "${PODMAN_REGISTRY_WORKDIR}" ]; then + PODMAN_REGISTRY_WORKDIR=${TMPDIR:-/tmp}/podman-registry-${PODMAN_REGISTRY_PORT} + if [ ! -d ${PODMAN_REGISTRY_WORKDIR} ]; then + die "$ME: directory does not exist: ${PODMAN_REGISTRY_WORKDIR}" + fi + fi + + ${PODMAN} --root ${PODMAN_REGISTRY_WORKDIR}/root \ + --runroot ${PODMAN_REGISTRY_WORKDIR}/runroot \ + "$@" +} + +# END helper functions +############################################################################### +# BEGIN action processing + +function do_start() { + # If called without a port, assign a random one in the 5xxx range + if [ -z "${PODMAN_REGISTRY_PORT}" ]; then + for port in $(shuf -i 5000-5999);do + if ! { exec 3<> /dev/tcp/127.0.0.1/$port; } &>/dev/null; then + PODMAN_REGISTRY_PORT=$port + break + fi + done + fi + + PODMAN_REGISTRY_WORKDIR=${TMPDIR:-/tmp}/podman-registry-${PODMAN_REGISTRY_PORT} + if [ -d ${PODMAN_REGISTRY_WORKDIR} ]; then + die "$ME: directory exists: ${PODMAN_REGISTRY_WORKDIR} (another registry might already be running on this port)" + fi + + # Randomly-generated username and password, if none given on command line + if [ -z "${PODMAN_REGISTRY_USER}" ]; then + PODMAN_REGISTRY_USER="user$(random_string 4)" + fi + if [ -z "${PODMAN_REGISTRY_PASS}" ]; then + PODMAN_REGISTRY_PASS=$(random_string 15) + fi + + # Die on any error + set -e + + mkdir -p ${PODMAN_REGISTRY_WORKDIR} + + local AUTHDIR=${PODMAN_REGISTRY_WORKDIR}/auth + mkdir -p $AUTHDIR + + # We have to be silent; our only output must be env. vars. Log output here. + local log=${PODMAN_REGISTRY_WORKDIR}/log + touch $log + + # Pull registry image, but into a separate container storage + mkdir -p ${PODMAN_REGISTRY_WORKDIR}/root + mkdir -p ${PODMAN_REGISTRY_WORKDIR}/runroot + + # Give it three tries, to compensate for flakes + podman pull ${PODMAN_REGISTRY_IMAGE} &>> $log || + podman pull ${PODMAN_REGISTRY_IMAGE} &>> $log || + podman pull ${PODMAN_REGISTRY_IMAGE} &>> $log + + # Registry image needs a cert. Self-signed is good enough. + local CERT=$AUTHDIR/domain.crt + # FIXME: if this fails, we fail silently! It'd be more helpful + # to say 'openssl failed' and cat the logfile + openssl req -newkey rsa:4096 -nodes -sha256 \ + -keyout ${AUTHDIR}/domain.key -x509 -days 2 \ + -out ${AUTHDIR}/domain.crt \ + -subj "/C=US/ST=Foo/L=Bar/O=Red Hat, Inc./CN=localhost" \ + &>> $log + + # Store credentials where container will see them + podman run --rm \ + --entrypoint htpasswd ${PODMAN_REGISTRY_IMAGE} \ + -Bbn ${PODMAN_REGISTRY_USER} ${PODMAN_REGISTRY_PASS} \ + > $AUTHDIR/htpasswd + + # In case someone needs to debug + echo "${PODMAN_REGISTRY_USER}:${PODMAN_REGISTRY_PASS}" \ + > $AUTHDIR/htpasswd-plaintext + + # Run the registry container. + podman run --quiet -d \ + -p ${PODMAN_REGISTRY_PORT}:5000 \ + --name registry \ + -v $AUTHDIR:/auth:Z \ + -e "REGISTRY_AUTH=htpasswd" \ + -e "REGISTRY_AUTH_HTPASSWD_REALM=Registry Realm" \ + -e "REGISTRY_AUTH_HTPASSWD_PATH=/auth/htpasswd" \ + -e "REGISTRY_HTTP_TLS_CERTIFICATE=/auth/domain.crt" \ + -e "REGISTRY_HTTP_TLS_KEY=/auth/domain.key" \ + registry:2 &>> $log + + # Dump settings. Our caller will use these to access the registry. + for v in IMAGE PORT USER PASS; do + echo "PODMAN_REGISTRY_${v}=\"$(eval echo \$PODMAN_REGISTRY_${v})\"" + done +} + + +function do_stop() { + podman stop registry + podman rm -f registry + + rm -rf ${PODMAN_REGISTRY_WORKDIR} +} + + +function do_ps() { + podman ps -a +} + + +function do_logs() { + podman logs registry +} + +# END action processing +############################################################################### +# BEGIN command-line processing + +# First command-line arg must be an action +action=${1?ACTION$missing} +shift + +case "$action" in + start) do_start ;; + stop) do_stop ;; + ps) do_ps ;; + logs) do_logs ;; + *) die "Unknown action '$action'; must be start / stop / ps / logs" ;; +esac + +# END command-line processing +############################################################################### + +exit 0 |