olibrook/appfy.recipe.gae

Buildout recipes for App Engine development.

appfy.recipe.gae

appfy.recipe.gae provides a series of zc.buildout recipes to help with Google App Engine development. It is inspired by rod.recipe.appengine, but using a different layout and with extended functionalities. It is also split in different recipes. Currently appfy.recipe.gae has 3 recipes:

appfy.recipe.gae:app_lib:	Downloads libraries from PyPi and installs in the app directory.
appfy.recipe.gae:sdk:	Downloads and installs the App Engine SDK.
appfy.recipe.gae:tools:	Installs a python executable and several SDK scripts in the buildout directory: appcfg, bulkload_client, bulkloader, dev_appserver and remote_api_shell. It also allows to set default values to start the dev_appserver.

Source code and issue tracker can be found at https://github.com/prmtl/appfy.recipe.gae.

For an example of how appfy makes distribution of App Engine apps easy and nice, see Moe installation instructions.

appfy.recipe.gae:app_lib

Downloads libraries from PyPi and installs in the app directory. This recipe extends zc.recipe.egg.Scripts, so all the options from that recipe are also valid.

Options

eggs:	Package names to be installed.
lib-directory:	Destination directory for the libraries. Default is distlib.
use-zipimport:	If true, a zip file with the libraries is created instead of a directory. The zip filename will be the value of lib-directory plus .zip.
ignore-globs:	A list of glob patterns to not be copied from the library.
ignore-packages:	A list of top-level package names or modules to be ignored. This is useful to ignore dependencies that won't be used. Some packages may install distribute, setuptools or pkg_resources but these are not very useful on App Engine, so you can set them to be ignored, for example.
delete-safe:	If true, always move lib-directory to a temporary directory inside the parts dir as a backup when building, instead of deleting it. This is to avoid accidental deletion if lib-directory is badly configured. Default to true.

Example

[app_lib]
# Sets the library dependencies for the app.
recipe = appfy.recipe.gae:app_lib
lib-directory = app/distlib
use-zipimport = false

# Define the libraries.
eggs =
    tipfy

# Don't copy files that match these glob patterns.
ignore-globs =
    *.c
    *.pyc
    *.pyo
    */test
    */tests
    */testsuite
    */django
    */sqlalchemy

# Don't install these packages or modules.
ignore-packages =
    distribute
    setuptools
    easy_install
    site
    pkg_resources

appfy.recipe.gae:sdk

Downloads and installs the App Engine SDK in the buildout directory.

Options

url:	URL to the App Engine SDK file. Default is to download the latest version from storage.googleapis.com.
destination:	Destination of the extracted SDK. Default is the parts directory.
clear-destination:	If true, deletes the destination dir before extracting the download. Default is true.

Example

[gae_sdk]
# Dowloads and extracts the App Engine SDK.
recipe = appfy.recipe.gae:sdk
url = http://googleappengine.googlecode.com/files/google_appengine_1.3.5.zip
destination = ${buildout:parts-directory}
hash-name = false
clear-destination = true

appfy.recipe.gae:tools

Installs a python executable and several SDK scripts in the buildout directory: appcfg, bulkload_client, bulkloader, dev_appserver and remote_api_shell.

It also allows to set default values to start the dev_appserver.

This recipe extends zc.recipe.egg.Scripts, so all the options from that recipe are also valid.

Options

sdk-directory:	Path to the App Engine SDK directory. It can be an absolute path or a reference to the appfy.recipe.gae:sdk destination option. Default is ${buildout:parts-directory}/google_appengine.
appcfg-script:	Name of the appcfg script to be installed in the bin directory.. Default is appcfg.
bulkload_client-script:	Name of the bulkloader script to be installed in the bin directory. Default is bulkload_client.
bulkloader-script:	Name of the bulkloader script to be installed in the bin directory. Default is bulkloader.
dev_appserver-script:	Name of the dev_appserver script to be installed in the bin directory. Default is dev_appserver.
remote_api_shell-script:	Name of the remote_api_shell script to be installed in the bin directory. Default is remote_api_shell.
config-file:	Configuration file with the default values to use in scripts. Default is gaetools.cfg.
extra-paths:	Extra paths to include in sys.path for generated scripts.
initialization:	Allows to specify some Python code to be included in the scripts.

Example

[gae_tools]
# Installs appcfg, dev_appserver and python executables in the bin directory.
recipe = appfy.recipe.gae:tools
sdk-directory = ${gae_sdk:destination}/google_appengine
# add extra code
initialization =
  import dev_appserver
  dev_appserver.fix_sys_path()
# Add these paths to sys.path in the generated scripts.
extra-paths =
    app/lib
    app/distlib

Note that this example references an gae_sdk section from the appfy.recipe.gae:sdk example. An absolute path could also be used.

To set default values to start the dev_appserver, create a section dev_appserver in the defined configuration file (gaetools.cfg by default). For example:

[dev_appserver]
# Set default values to start the dev_appserver. All options from the
# command line are allowed. They are inserted at the beginning of the
# arguments. Values are used as they are; don't use variables here.
recipe = appfy.recipe.gae:tools
defaults =
    --datastore_path=var/data.store
    --history_path=var/history.store
    --blobstore_path=var/blob.store
    app

Each option should be set in a separate line, as displayed above. Options provided when calling dev_appserver will override the default values.