# lib/glance

 # Functions to control the configuration and operation of the **Glance** service

 
 # Dependencies:
 # ``functions`` file

 # ``DEST``, ``DATA_DIR``, ``STACK_USER`` must be defined

 # ``SERVICE_{TENANT_NAME|PASSWORD}`` must be defined
 # ``SERVICE_HOST``

 # ``KEYSTONE_TOKEN_FORMAT`` must be defined

 
 # ``stack.sh`` calls the entry points in this order:
 #
 # install_glance
 # configure_glance
 # init_glance
 # start_glance
 # stop_glance
 # cleanup_glance
 
 # Save trace setting
 XTRACE=$(set +o | grep xtrace)
 set +o xtrace
 
 
 # Defaults
 # --------
 
 # Set up default directories
 GLANCE_DIR=$DEST/glance
 GLANCECLIENT_DIR=$DEST/python-glanceclient
 GLANCE_CACHE_DIR=${GLANCE_CACHE_DIR:=$DATA_DIR/glance/cache}
 GLANCE_IMAGE_DIR=${GLANCE_IMAGE_DIR:=$DATA_DIR/glance/images}

 GLANCE_AUTH_CACHE_DIR=${GLANCE_AUTH_CACHE_DIR:-/var/cache/glance}

 
 GLANCE_CONF_DIR=${GLANCE_CONF_DIR:-/etc/glance}
 GLANCE_REGISTRY_CONF=$GLANCE_CONF_DIR/glance-registry.conf
 GLANCE_API_CONF=$GLANCE_CONF_DIR/glance-api.conf
 GLANCE_REGISTRY_PASTE_INI=$GLANCE_CONF_DIR/glance-registry-paste.ini
 GLANCE_API_PASTE_INI=$GLANCE_CONF_DIR/glance-api-paste.ini
 GLANCE_CACHE_CONF=$GLANCE_CONF_DIR/glance-cache.conf
 GLANCE_POLICY_JSON=$GLANCE_CONF_DIR/policy.json
 
 # Support entry points installation of console scripts
 if [[ -d $GLANCE_DIR/bin ]]; then
     GLANCE_BIN_DIR=$GLANCE_DIR/bin
 else

     GLANCE_BIN_DIR=$(get_python_exec_prefix)

 fi
 
 # Glance connection info.  Note the port must be specified.
 GLANCE_HOSTPORT=${GLANCE_HOSTPORT:-$SERVICE_HOST:9292}
 
 

 # Functions
 # ---------

 
 # cleanup_glance() - Remove residual data files, anything left over from previous
 # runs that a clean run would need to clean up
 function cleanup_glance() {
     # kill instances (nova)
     # delete image files (glance)

     sudo rm -rf $GLANCE_CACHE_DIR $GLANCE_IMAGE_DIR $GLANCE_AUTH_CACHE_DIR

 }
 
 # configure_glance() - Set config files, create data dirs, etc
 function configure_glance() {
     if [[ ! -d $GLANCE_CONF_DIR ]]; then
         sudo mkdir -p $GLANCE_CONF_DIR
     fi

     sudo chown $STACK_USER $GLANCE_CONF_DIR

 
     # Copy over our glance configurations and update them
     cp $GLANCE_DIR/etc/glance-registry.conf $GLANCE_REGISTRY_CONF
     iniset $GLANCE_REGISTRY_CONF DEFAULT debug True
     inicomment $GLANCE_REGISTRY_CONF DEFAULT log_file

     local dburl=`database_connection_url glance`

     iniset $GLANCE_REGISTRY_CONF DEFAULT sql_connection $dburl

     iniset $GLANCE_REGISTRY_CONF DEFAULT use_syslog $SYSLOG
     iniset $GLANCE_REGISTRY_CONF paste_deploy flavor keystone
     iniset $GLANCE_REGISTRY_CONF keystone_authtoken auth_host $KEYSTONE_AUTH_HOST
     iniset $GLANCE_REGISTRY_CONF keystone_authtoken auth_port $KEYSTONE_AUTH_PORT
     iniset $GLANCE_REGISTRY_CONF keystone_authtoken auth_protocol $KEYSTONE_AUTH_PROTOCOL
     iniset $GLANCE_REGISTRY_CONF keystone_authtoken auth_uri $KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_SERVICE_PORT/
     iniset $GLANCE_REGISTRY_CONF keystone_authtoken admin_tenant_name $SERVICE_TENANT_NAME
     iniset $GLANCE_REGISTRY_CONF keystone_authtoken admin_user glance
     iniset $GLANCE_REGISTRY_CONF keystone_authtoken admin_password $SERVICE_PASSWORD

     iniset $GLANCE_REGISTRY_CONF keystone_authtoken signing_dir $GLANCE_AUTH_CACHE_DIR/registry

 
     cp $GLANCE_DIR/etc/glance-api.conf $GLANCE_API_CONF
     iniset $GLANCE_API_CONF DEFAULT debug True
     inicomment $GLANCE_API_CONF DEFAULT log_file

     iniset $GLANCE_API_CONF DEFAULT sql_connection $dburl

     iniset $GLANCE_API_CONF DEFAULT use_syslog $SYSLOG
     iniset $GLANCE_API_CONF DEFAULT filesystem_store_datadir $GLANCE_IMAGE_DIR/
     iniset $GLANCE_API_CONF DEFAULT image_cache_dir $GLANCE_CACHE_DIR/
     iniset $GLANCE_API_CONF paste_deploy flavor keystone+cachemanagement
     iniset $GLANCE_API_CONF keystone_authtoken auth_host $KEYSTONE_AUTH_HOST
     iniset $GLANCE_API_CONF keystone_authtoken auth_port $KEYSTONE_AUTH_PORT
     iniset $GLANCE_API_CONF keystone_authtoken auth_protocol $KEYSTONE_AUTH_PROTOCOL
     iniset $GLANCE_API_CONF keystone_authtoken auth_uri $KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_SERVICE_PORT/
     iniset $GLANCE_API_CONF keystone_authtoken admin_tenant_name $SERVICE_TENANT_NAME
     iniset $GLANCE_API_CONF keystone_authtoken admin_user glance
     iniset $GLANCE_API_CONF keystone_authtoken admin_password $SERVICE_PASSWORD

     if is_service_enabled qpid; then
         iniset $GLANCE_API_CONF DEFAULT notifier_strategy qpid
     elif [ -n "$RABBIT_HOST" ] &&  [ -n "$RABBIT_PASSWORD" ]; then
         iniset $GLANCE_API_CONF DEFAULT notifier_strategy rabbit
     fi

     iniset_rpc_backend glance $GLANCE_API_CONF DEFAULT

     iniset $GLANCE_API_CONF keystone_authtoken signing_dir $GLANCE_AUTH_CACHE_DIR/api

     # Store the images in swift if enabled.
     if is_service_enabled s-proxy; then
         iniset $GLANCE_API_CONF DEFAULT default_store swift
         iniset $GLANCE_API_CONF DEFAULT swift_store_auth_address $KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_SERVICE_PORT/v2.0/
         iniset $GLANCE_API_CONF DEFAULT swift_store_user $SERVICE_TENANT_NAME:glance
         iniset $GLANCE_API_CONF DEFAULT swift_store_key $SERVICE_PASSWORD
         iniset $GLANCE_API_CONF DEFAULT swift_store_create_container_on_put True
     fi
 

     cp -p $GLANCE_DIR/etc/glance-registry-paste.ini $GLANCE_REGISTRY_PASTE_INI
 
     cp -p $GLANCE_DIR/etc/glance-api-paste.ini $GLANCE_API_PASTE_INI
 
     cp $GLANCE_DIR/etc/glance-cache.conf $GLANCE_CACHE_CONF
     iniset $GLANCE_CACHE_CONF DEFAULT debug True
     inicomment $GLANCE_CACHE_CONF DEFAULT log_file
     iniset $GLANCE_CACHE_CONF DEFAULT use_syslog $SYSLOG
     iniset $GLANCE_CACHE_CONF DEFAULT filesystem_store_datadir $GLANCE_IMAGE_DIR/
     iniset $GLANCE_CACHE_CONF DEFAULT image_cache_dir $GLANCE_CACHE_DIR/
     iniuncomment $GLANCE_CACHE_CONF DEFAULT auth_url
     iniset $GLANCE_CACHE_CONF DEFAULT auth_url $KEYSTONE_AUTH_PROTOCOL://$KEYSTONE_AUTH_HOST:$KEYSTONE_AUTH_PORT/v2.0
     iniuncomment $GLANCE_CACHE_CONF DEFAULT auth_tenant_name
     iniset $GLANCE_CACHE_CONF DEFAULT admin_tenant_name $SERVICE_TENANT_NAME
     iniuncomment $GLANCE_CACHE_CONF DEFAULT auth_user
     iniset $GLANCE_CACHE_CONF DEFAULT admin_user glance
     iniuncomment $GLANCE_CACHE_CONF DEFAULT auth_password
     iniset $GLANCE_CACHE_CONF DEFAULT admin_password $SERVICE_PASSWORD
 
     cp -p $GLANCE_DIR/etc/policy.json $GLANCE_POLICY_JSON
 }
 

 # create_glance_cache_dir() - Part of the init_glance() process
 function create_glance_cache_dir() {
     # Create cache dir
     sudo mkdir -p $GLANCE_AUTH_CACHE_DIR/api
     sudo chown $STACK_USER $GLANCE_AUTH_CACHE_DIR/api
     rm -f $GLANCE_AUTH_CACHE_DIR/api/*
     sudo mkdir -p $GLANCE_AUTH_CACHE_DIR/registry
     sudo chown $STACK_USER $GLANCE_AUTH_CACHE_DIR/registry
     rm -f $GLANCE_AUTH_CACHE_DIR/registry/*
 }
 

 # init_glance() - Initialize databases, etc.
 function init_glance() {
     # Delete existing images
     rm -rf $GLANCE_IMAGE_DIR
     mkdir -p $GLANCE_IMAGE_DIR
 
     # Delete existing cache
     rm -rf $GLANCE_CACHE_DIR
     mkdir -p $GLANCE_CACHE_DIR
 

     # (Re)create glance database

     recreate_database glance utf8

     # Migrate glance database

     $GLANCE_BIN_DIR/glance-manage db_sync

     create_glance_cache_dir

 }
 
 # install_glanceclient() - Collect source and prepare
 function install_glanceclient() {
     git_clone $GLANCECLIENT_REPO $GLANCECLIENT_DIR $GLANCECLIENT_BRANCH

     setup_develop $GLANCECLIENT_DIR

 }
 
 # install_glance() - Collect source and prepare
 function install_glance() {
     git_clone $GLANCE_REPO $GLANCE_DIR $GLANCE_BRANCH

     setup_develop $GLANCE_DIR

 }
 
 # start_glance() - Start running processes, including screen
 function start_glance() {
     screen_it g-reg "cd $GLANCE_DIR; $GLANCE_BIN_DIR/glance-registry --config-file=$GLANCE_CONF_DIR/glance-registry.conf"
     screen_it g-api "cd $GLANCE_DIR; $GLANCE_BIN_DIR/glance-api --config-file=$GLANCE_CONF_DIR/glance-api.conf"
     echo "Waiting for g-api ($GLANCE_HOSTPORT) to start..."
     if ! timeout $SERVICE_TIMEOUT sh -c "while ! http_proxy= wget -q -O- http://$GLANCE_HOSTPORT; do sleep 1; done"; then

       die $LINENO "g-api did not start"

     fi
 }
 

 # stop_glance() - Stop running processes

 function stop_glance() {
     # Kill the Glance screen windows
     screen -S $SCREEN_NAME -p g-api -X kill
     screen -S $SCREEN_NAME -p g-reg -X kill
 }
 

 # Restore xtrace
 $XTRACE

 
 # Local variables:
 # mode: shell-script
 # End: