~charmers/charms/precise/chef-server/trunk : revision 3

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set -eu #-x for verbose logging to juju debug-log

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CWD=$(dirname $0)

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CONFIG_CACHE=/var/cache/charms/chef-server.config

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HOSTS_FILE=/etc/hosts

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APT_LIST_PATH=/etc/apt/sources.list.d/opscode.list

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APT_FLAGS="--yes --force-yes"

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chef-server

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chef-server-webui )

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# Config vars

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# Non-configurable parameters

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RABBIT_PORT=5763

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AMQP_PW=chef_amqp_pw

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# Configurable parameters

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CHEF_VERSION=$(config-get chef-version)

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HOST_IP=$(unit-get private-address)

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WEBUI_PORT=$(config-get webui-port)

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REST_API_PORT=$(config-get restapi-port)

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SOLR_PORT=$(config-get solr-port)

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RABBIT_PORT=$(config-get rabbit-port)

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WEBUI_USER=$(config-get webui-user)

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WEBUI_PW=$(config-get webui-pw)

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AMQP_PW=$(config-get amqp-pw)

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KNIFE_USER=$(config-get knife-user)

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# Make sure we do not get any intercativity when installing packages

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# Bring our little helpers into the frame

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source ${CWD}/functions

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mkdir -p `dirname ${CONFIG_CACHE}`

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# IMPORTANT: if a new setting is added to config it must also be added here.

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function dump_config ()

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{

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local target=${1}

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log_info "dumping config to '${target}'"

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cat << __EOF__ > $target

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$CHEF_VERSION

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$HOST_IP

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$WEBUI_PORT

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$REST_API_PORT

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$SOLR_PORT

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$WEBUI_USER

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$WEBUI_PW

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$KNIFE_USER

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__EOF__

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}

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# Determine whether current config is different from the last one.

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function config_has_changed ()

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{

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if [ ! -f ${CONFIG_CACHE} ]

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then

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log_info "config cache '${CONFIG_CACHE}' does not exist"

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return 0

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fi

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dump_config "${CONFIG_CACHE}.tmp"

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local rc=0

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diff "${CONFIG_CACHE}" "${CONFIG_CACHE}.tmp" 1>/dev/null || rc=$?

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if [ $rc != 0 ]

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then

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log_info "config has changed"

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return 0

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else

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log_info "config has not changed"

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return 1

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fi

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}

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function assert_cfg_change_successful ()

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{

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rc=${1}

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setting=${2}

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if [ $rc != "0" ]

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then

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log_error "unable to apply setting '${setting}'"

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exit 1

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fi

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}

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function set_service_config_data ()

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{

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log_info "setting user config data"

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if [ -z "${WEBUI_USER}" ] || [ -z "${WEBUI_PW}" ];

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local rc=0

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local cfg_file=${CHEF_CFG_DIR}/webui.rb

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if [ -z "${WEBUI_USER}" ]

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then

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log_info "null config setting"

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log_info "WEBUI_USER is null"

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else

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local cfg_file=${CHEF_CFG_DIR}/webui.rb

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key="web_ui_admin_user_name"

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val="${WEBUI_USER}"

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sed -e "s/${key} \".+?\"/${key} \"${val}\"/g" ${cfg_file} -i

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sed -E "s/^${key}\s+\".+?\"/${key} \"${val}\"/g" ${cfg_file} -i

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grep -qE "^${key}\s+\"${val}\"" ${cfg_file} || rc=$?

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assert_cfg_change_successful $rc "webui-user"

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fi

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if [ -z "${WEBUI_PW}" ]

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then

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log_info "WEBUI_PW is null"

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else

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key="web_ui_admin_default_password"

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val="${WEBUI_PW}"

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sed -e "s/${key} \".+?\"/${key} \"${val}\"/g" ${cfg_file} -i

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sed -E "s/^${key}\s+\".+?\"/${key} \"${val}\"/g" ${cfg_file} -i

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grep -qE "^${key}\s+\"${val}\"" ${cfg_file} || rc=$?

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assert_cfg_change_successful $rc "webui-pw"

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fi

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}

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function setup_knife_user ()

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{

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set +e

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id $KNIFE_USER

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if [ $? != "0" ]

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local rc=0

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id $KNIFE_USER || rc=$?

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if [ $rc != "0" ]

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then

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log_warning "user '${KNIFE_USER}' does not exist so cannot create knife config"

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return

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fi

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set -e

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LOCAL_CHEF_DIR=/home/$KNIFE_USER/.chef

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mkdir -p /home/$KNIFE_USER/.chef

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{

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log_info "installing '${JUJU_UNIT_NAME}' - chef-server version ${CHEF_VERSION}"

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# IMPORTANT: this MUST be the first action

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log_info "deleting config cache '${CONFIG_CACHE}'"

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rm -f "${CONFIG_CACHE}"

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echo "deb http://apt.opscode.com/ precise-${CHEF_VERSION} main" > ${APT_LIST_PATH}

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mkdir -p /etc/apt/trusted.gpg.d

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# Chef server installs a rabbitmq-server which will not install/run if the

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# following is not set.

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set +e

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`grep -q 127.0.1.1 $HOSTS_FILE`

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if [ $? != "0" ]

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local rc=0

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grep -q 127.0.1.1 $HOSTS_FILE || rc=$?

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if [ $rc != "0" ]

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then

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echo -e "\n# Added by juju charm for '${JUJU_UNIT_NAME}' install\n127.0.1.1 `hostname`" >> $HOSTS_FILE

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fi

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set -e

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apt-get install chef chef-server $APT_FLAGS

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# Stop the service until we have finished configuring

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set +e

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upstart_stop chef-server

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set -e

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setup_knife_user

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set_service_config_data

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# Restart the chef-server and related services

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set +e

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check_upstart_services_running ${CORE_CHEF_SERVICES[@]}

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set -e

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log_info "service unit '${JUJU_UNIT_NAME}' installed."

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hostname=$(unit-get public-address)

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log_info "you can now 'juju expose' the '${JUJU_UNIT_NAME}' service and visit http://${hostname}:${WEBUI_PORT}"

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# IMPORTANT: this MUST be the last action.

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dump_config "${CONFIG_CACHE}"

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}

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function stop_all_services ()

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{

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for srvc in ${CORE_CHEF_SERVICES[@]}

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do

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set +e

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upstart_stop $srvc

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set -e

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done

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}

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function service_start ()

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{

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log_info "starting service unit '${JUJU_UNIT_NAME}'"

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set +e

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check_upstart_services_running ${CORE_CHEF_SERVICES[@]}

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set -e

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log_info "service unit '${JUJU_UNIT_NAME}' started."

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}

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function service_upgrade ()

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{

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log_info "upgrading service unit '${JUJU_UNIT_NAME}'"

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service_stop

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service_install

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# Make sure the config really has changed befaore re-installing

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if config_has_changed

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then

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service_stop

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service_install

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else

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log_info "config has not changed so skipping re-install - checking services instead"

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check_upstart_services_running ${CORE_CHEF_SERVICES[@]}

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fi

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log_info "service unit '${JUJU_UNIT_NAME}' upgraded."

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}

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