Docker: setup proxy and drush aliases

dock-in

#!/bin/bash

##
# Requirements:
#
# brew install jq
# docker and docker-machine
#

##
# Sudoers:
#
# <myuser>	ALL=(root) NOPASSWD: /bin/mv * /etc/apache2/other/docker.conf
# <myuser>	ALL=(root) NOPASSWD: /usr/sbin/apachectl graceful
#

##
# Config file can hold the following configuration. Values shown are
# the defaults.
#
# {
#     "tld": ".dev",
#     "dockermachine": "default",
#     "apache": "/etc/apache2/other/docker.conf",
#     "drush": "~/.drush/docker.aliases.drushrc.php"
# }
#

# Define (and create) config file.
CONFIG_FILE=~/.dock-in.json
if [ ! -f ${CONFIG_FILE} ]; then
    echo '{}' > ${CONFIG_FILE}
fi

# Read configs with defaults.
TLD=$(jq -r '.tld // ".dev"' ${CONFIG_FILE})
DOCKER_MACHINE=$(jq -r '.dockermachine // "default"' ${CONFIG_FILE})
APACHE_FILE=$(jq -r '.apache // "/etc/apache2/other/docker.conf"' ${CONFIG_FILE})
DRUSH_FILE=$(jq -r '.drush // "~/.drush/docker.aliases.drushrc.php"' ${CONFIG_FILE})

# Config file default/start content.
APACHE='# This is a generated file.'
DRUSH='<?php // This is a generated file.'

# Eval docker machine environment.
eval "$(docker-machine env "${DOCKER_MACHINE}")"

# Get docker machines IP.
IP=$(docker-machine ip "${DOCKER_MACHINE}")

# Loop over Docker containers.
for NAME in $(docker ps --format={{.Names}}); do
    # Apache config.
    WWWPORT=$(docker port "${NAME}" 80/tcp | rev | cut -d : -f 1 | rev)
    read -r -d '' APACHE <<EOF
$APACHE

<VirtualHost *:80>
    ServerName ${NAME}${TLD}
    ServerAlias *.${NAME}${TLD}

    ProxyPreserveHost On
    ProxyPass / http://${IP}:${WWWPORT}/
</VirtualHost>
EOF

    # DB config for Drush site aliases.
    DBPORT=$(docker port "${NAME}" 3306/tcp | rev | cut -d : -f 1 | rev)
    DOCROOT=$(docker inspect "${NAME}" | jq -r '.[].Mounts | .[] | select(.Destination == "/www").Source')
    STATUS=$(drush status --root="${DOCROOT}" --show-passwords --pipe)
    DB_DRIVER=$(jq -r '."db-driver"' <<< "${STATUS}")
    DB_USERNAME=$(jq -r '."db-username"' <<< "${STATUS}")
    DB_PASSWORD=$(jq -r '."db-password"' <<< "${STATUS}")
    DB_NAME=$(jq -r '."db-name"' <<< "${STATUS}")
    read -r -d '' DRUSH <<EOF
$DRUSH

\$aliases['${NAME}'] = array(
  'uri' => '${NAME}${TLD}',
  'root' => '${DOCROOT}',
  'db-url' => '${DB_DRIVER}://${DB_USERNAME}:${DB_PASSWORD}@${IP}:${DBPORT}/${DB_NAME}',
);

EOF
done;

# Write to temporary files.
TEMPAPACHE=$(mktemp -t d-a)
echo "${APACHE}" > "${TEMPAPACHE}"

TEMPDRUSH=$(mktemp -t d-a)
echo "${DRUSH}" > "${TEMPDRUSH}"

# Move into place and restart Apache.
mv "${TEMPDRUSH}" "${DRUSH_FILE}"
sudo mv "${TEMPAPACHE}" "${APACHE_FILE}"
sudo apachectl graceful