Update pkg script to pull docker-compose into a local container if it is unavailable in the path.
(cherry picked from commit 4b4be596d0bbaae7f67622062d32a9097dd64438) Project: http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/repo Commit: http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/commit/e94ac08b Tree: http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/tree/e94ac08b Diff: http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/diff/e94ac08b Branch: refs/heads/2.0.x Commit: e94ac08bedee0357a3562d70516eb467d1d32a8c Parents: 7685142 Author: Chris Lemmons <alfic...@gmail.com> Authored: Wed Mar 15 13:33:08 2017 -0600 Committer: Eric Friedrich <fri...@apache.org> Committed: Wed May 31 10:08:57 2017 -0400 ---------------------------------------------------------------------- BUILD.md | 5 +++- pkg | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++------ 2 files changed, 71 insertions(+), 8 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/blob/e94ac08b/BUILD.md ---------------------------------------------------------------------- diff --git a/BUILD.md b/BUILD.md index eb6c8f1..000d25a 100644 --- a/BUILD.md +++ b/BUILD.md @@ -7,7 +7,10 @@ are automatically loaded into the image used to build each component. ### Requirements - `docker` (https://docs.docker.com/engine/installation/) -- `docker-compose` (https://docs.docker.com/compose/install/) +- `docker-compose` (https://docs.docker.com/compose/install/) (optional, but recommended) + +If `docker-compose` is not available, the `pkg` script will automatically download +and run it in a container. This is noticeably slower than running it natively. ### Steps http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/blob/e94ac08b/pkg ---------------------------------------------------------------------- diff --git a/pkg b/pkg index fe195b4..2912bcb 100755 --- a/pkg +++ b/pkg @@ -18,16 +18,76 @@ cd "$( dirname "${BASH_SOURCE[0]}" )" COMPOSE_FILE=./infrastructure/docker/build/docker-compose.yml # Check for dependencies -if ! which docker-compose >/dev/null 2>&1; then - echo "Error: docker-compose is required for a docker build." >&2 +if ! which docker >/dev/null 2>&1; then + echo "Error: docker is required for a docker build." >&2 exit 1 fi +# If the user defined COMPOSE, use that as the path for docker-compose. +if [ ! -z "$COMPOSE" ]; then + COMPOSECMD=( "$COMPOSE" ) +else + COMPOSECMD=() +fi + +# Check to see if docker-compose is already installed and use it directly, if possible. +if [ ${#COMPOSECMD[@]} -eq 0 ]; then + if which docker-compose >/dev/null 2>&1; then + COMPOSECMD=( docker-compose ) + fi +fi + +# If it's unavailable, go get the image and run docker-compose inside a container. +# This is considerably slower, but allows for building on hosts without docker-compose. +if [ ${#COMPOSECMD[@]} -eq 0 ]; then + # Pin the version of docker-compose. + IMAGE="docker/compose:1.11.2" + + # We need to either mount the docker socket or export the docker host into the container. + # This allows the container to manage "sibling" containers via docker. + if [ -z "$DOCKER_HOST" ]; then + DOCKER_HOST="/var/run/docker.sock" + fi + + if [ -S "$DOCKER_HOST" ]; then + DOCKER_ADDR=(-v "$DOCKER_HOST:$DOCKER_HOST" -e DOCKER_HOST) + else + DOCKER_ADDR=(-e DOCKER_HOST -e DOCKER_TLS_VERIFY -e DOCKER_CERT_PATH) + fi + + # We mount the current directory (the base of the repository) into the same location + # inside the container. There are many places for which this won't work, but "/" is + # a major one. + # + # You're going to want to avoid keeping your repository in a folder named "/usr/bin", + # "/home", "/var" or any other standard paths that will be needed by the docker container. + # + # This is very unlikely to cause trouble for anyone in practice. + if [ "$(pwd)" == "/" ]; then + echo "Error: Cannot compile directly at filesystem root." >&2 + exit 1 + fi + + # Mount the working directory, and the home directory. Mounting $HOME provides container + # access to config files that are kept there. + VOLUMES=(-v "$(pwd):$(pwd)" -v "$HOME:$HOME" -v "$HOME:/root") + + # Prepull the image, to avoid spitting out pull progress during other commands. + if ! docker inspect $IMAGE >/dev/null 2>&1; then + docker pull $IMAGE >/dev/null 2>&1 + fi + + # COMPOSECMD is kept as an array to significantly simplify handling paths that contain + # spaces and other special characters. + COMPOSECMD=(docker run --rm "${DOCKER_ADDR[@]}" $COMPOSE_OPTIONS "${VOLUMES[@]}" -w "$(pwd)" $IMAGE) +fi + # Parse command line arguments verbose=0 -while getopts lvq? opt; do +while getopts :lvq? opt; do case $opt in \?) + PROJECTS=`$SELF -l | sed "s/^/ - /"` echo "Usage: $SELF [options] [projects]" echo " -q Quiet mode. Supresses output." echo " -v Verbose mode. Lists all build output." @@ -35,7 +95,7 @@ while getopts lvq? opt; do echo echo " If no projects are listed, all projects will be packaged." echo " Valid projects:" - $SELF -l | sed "s/^/ - /" + cat <<< "$PROJECTS" exit 0 ;; q) @@ -45,7 +105,7 @@ while getopts lvq? opt; do verbose=1 ;; l) - docker-compose -f $COMPOSE_FILE config --services + "${COMPOSECMD[@]}" -f $COMPOSE_FILE config --services exit $? ;; esac @@ -67,8 +127,8 @@ while (( "$#" )); do if (( "$verbose" == 0 )); then exec >/dev/null 2>&1 fi - docker-compose -f $COMPOSE_FILE build $1 || exit 1 - docker-compose -f $COMPOSE_FILE run --rm $1 || exit 1 + "${COMPOSECMD[@]}" -f $COMPOSE_FILE build $1 || exit 1 + "${COMPOSECMD[@]}" -f $COMPOSE_FILE run --rm $1 || exit 1 ) || { # Don't totally bail out, but make note of the failures. failure=1
