为cloudfoundry添加Django支持

本文通过给cloudfoundry添加Django的支持,简要介绍添加Framework的方法.(如何添加Runtime请阅读 http://oldfritters.iteye.com/blog/1867876)

 

首先,向blobstore中添加Django以及相关的包,方法同前文中添加Python.

  

 

其次,添加package

   packaging：cf-release/packages/dea_python27/packaging

# abort script on any command that exit with a non zero value
set -e
echo "Setup python2.7.4"
tar xzvf python/python-2.7.4.tgz
(
  cd Python-2.7.4
  ./configure --prefix=${BOSH_INSTALL_TARGET} 
  make
  make install
)

echo "Setup Django"
tar xzvf python/Django-1.4.5.tar.gz
(
  cd Django-1.4.5
  echo c1oudc0w | sudo -S ${BOSH_INSTALL_TARGET}/bin/python setup.py install
)

echo "Setup Setuptools"
tar xzvf python/setuptools-0.6c11.tar.gz
(
  cd setuptools-0.6c11
  echo c1oudc0w | sudo -S ${BOSH_INSTALL_TARGET}/bin/python setup.py install
)

echo "Setup pip"
tar xzvf python/pip-1.3.1.tar.gz
(
  cd pip-1.3.1
  echo c1oudc0w | sudo -S ${BOSH_INSTALL_TARGET}/bin/python setup.py install
)

echo "Setup gunicorn"
tar xzvf python/gunicorn-0.17.4.tar.gz
(
  cd gunicorn-0.17.4
  echo c1oudc0w | sudo -S ${BOSH_INSTALL_TARGET}/bin/python setup.py install
)

echo "Setup mysql-connector-python"
tar xzvf python/mysql-connector-python-1.0.10.tar.gz
(
  cd mysql-connector-python-1.0.10
  echo c1oudc0w | sudo -S ${BOSH_INSTALL_TARGET}/bin/python setup.py install
)

echo c1oudc0w | sudo -S apt-get -y update
echo c1oudc0w | sudo -S apt-get -y --fix-missing install libmysqlclient-dev

echo "Setup MySQL-python-1.2.4b4.tar"
tar xzvf python/MySQL-python-1.2.4b4.tar.gz
(
  cd MySQL-python-1.2.4b4
  echo c1oudc0w | sudo -S ${BOSH_INSTALL_TARGET}/bin/python setup.py install
)

 

      spec：cf-release/packages/dea_python27/spec

---
name: dea_python27
dependencies:
files:
- python/python-2.7.4.tgz
- python/setuptools-0.6c11.tar.gz
- python/pip-1.3.1.tar.gz 
- python/MySQL-python-1.2.4b4.tar.gz
- python/mysql-connector-python-1.0.10.tar.gz
- python/gunicorn-0.17.4.tar.gz
- python/Django-1.4.5.tar.gz

 

blob中添加依赖包: cf-release/config/blob.yml

---
python/setuptools-0.6c11.tar.gz:
  object_id: 636b1c0e-d177-45ed-901f-b06e28485a2b
  sha: 8d1ad6384d358c547c50c60f1bfdb3362c6c4a7d
  size: 256862
python/pip-1.3.1.tar.gz:
  object_id: d86a4778-82ba-420d-9204-5923a71fe7ed
  sha: 9c70d314e5dea6f41415af814056b0f63c3ffd14
  size: 247594
python/MySQL-python-1.2.4b4.tar.gz:
  object_id: 8b5cf796-9632-4a33-aed9-4ea64845a4fe
  sha: 1801dba46f45a8596d17424bf07a747c7bac841f
  size: 79704
python/mysql-connector-python-1.0.10.tar.gz:
  object_id: ba10a05a-ca71-41cf-bf5a-3bc0558bd984
  sha: 31d26132f8089b25aed6255b835c8df60fe61c9a
  size: 234122
python/gunicorn-0.17.4.tar.gz:
  object_id: ff817558-6c7a-426f-861b-492ef38ea2e2
  sha: ca4c95a236fd90dcf46ffa35c150d9564336e150
  size: 372737
python/python-2.7.4.tgz:
  object_id: 94ec890f-ae43-455c-932d-49aa9d34e462
  sha: 2283858b832fc391b8e96bb600e0b39e52ae97bd
  size: 14489063
python/Django-1.4.5.tar.gz:
  object_id: 354c918e-fb75-431b-81e4-dacd1b7cbdf6
  sha: 1bfaa4643c6775fbf394137f1533659be45441e7
  size: 7735582

添加runtime支持: cf-release/jobs/cloud_controller/templates/runtimes.yml

---
python27:
  description: Python
  version: "2.7.4"
  executable: /var/vcap/packages/dea_python27/bin/python
  soft_link_folder: python/bin
  soft_link_targets:
    executable: /var/vcap/packages/dea_python27/bin/python
    gunicorn_django: /var/vcap/packages/dea_python27/bin/gunicorn_django
    django: /var/vcap/packages/dea_python27/bin/django-admin.py
    gunicorn: /var/vcap/packages/dea_python27/bin/gunicorn
    gunicorn_paster: /var/vcap/packages/dea_python27/bin/gunicorn_paster
  soft_links:
    executable: python/bin/python
    gunicorn_django: python/bin/gunicorn_django
    django: python/bin/django
    gunicorn: python/bin/gunicorn
    gunicorn_paster: python/bin/gunicorn_paster
  staging: /var/vcap/packages/ruby/bin/ruby stage
  version_output: 2.7.4
  version_flag: "-c 'import platform; print platform.python_version()'"
  environment:
    PATH: /var/vcap/packages/ruby/bin:/var/vcap/packages/dea_python27/bin:/var/vcap/packages/imagemagick/bin:$PATH
    LD_LIBRARY_PATH: '/var/vcap/packages/mysqlclient/lib/mysql:/var/vcap/packages/sqlite/lib:/var/vcap/packages/libpq/lib:/var/vcap/packages/imagemagick/lib:$LD_LIBRARY_PATH'
  debug_modes:
    - run
    - suspend
  status:
    name: current
  series: python27
  category: python

添加Django支持: cf-release/jobs/cloud_controller/templates/django.yml

---
name: django

runtimes:
  - python27:
      default: true
detection:
  - manage.py: true

 修改代码：cf-release/src/dea/lib/dea/agent.rb

   def stage_app_dir(bits_file, bits_uri, sha1, tgz_file, instance_dir, runtime)
      ......
      FileUtils.rm_f(tgz_file) unless @disable_dir_cleanup
      add_runtime_soft_links instance_dir,runtime if runtime['soft_link_tagets'] && runtime['soft_links'] && runtime['soft_link_folder']
      bind_local_runtime(instance_dir, runtime)
      @logger.debug("Took #{Time.now - start} to stage the app directory")
      true
    end
    
  #此方法是额外添加的
     def add_runtime_soft_links instance_dir, runtime
      FileUtils.mkdir_p [instance_dir, runtime['soft_link_folder']].join('/')
      runtime['soft_link_targets'].each{|key| FileUtils.ln_s runtime['soft_link_targets'][key], [instance_dir, runtime['soft_links'][key]].join('/') }
    end