def test_story_of_two_envs(self):
"""If an app is served by multiple processes, and auto_build is used,
if one process rebuilds a bundle, the other one must know (instead of
continuing to serve the old version.
For this reason, if auto_build is enabled, the version will always be
determined anew in every request, rather than using a cached version.
(This is the reason why get_version() has the refresh=True option).
"""
# Prepare a manifest and bundle in env1. Use a file manifest
env1 = self.env
env1.url_expire = True
bundle1 = self.mkbundle('in', output='out-%(version)s')
# Prepare an identical setup, simulating the second process
env2 = Environment(env1.directory, env1.url)
env2.config.update(copy.deepcopy(env1.config._dict))
bundle2 = self.mkbundle('in', output='out-%(version)s')
bundle2.env = env2
# Both have auto build enabled, both are using the same manifest
env1.auto_build = env2.auto_build = True
env1.manifest = 'file'
env2.manifest = 'file'
env1.updater = 'timestamp'
env2.updater = 'timestamp'
# Do the initial build, both envs think they are running the
# latest version.
env1.versions.version = bundle1.version = 'old'
env2.versions.version = bundle2.version = 'old'
bundle1.build()
assert env2.updater.needs_rebuild(bundle2, env2) == False
# At this point, both return the old version in urls
assert bundle1.urls() == ['/out-old?old']
assert bundle2.urls() == ['/out-old?old']
# Now let env1 do an update.
env1.versions.version = 'new'
bundle1.build(force=True)
assert bundle1.urls() == ['/out-new?new']
# If auto_build is False, env2 will continue to use the old version.
env2.auto_build = False
assert bundle2.urls() == ['/out-old?old']
# However, if auto_build is True, env2 will know the new version.
# This is because env1 wrote it to the manifest during build.
env2.auto_build = True
assert bundle2.get_version() == 'old' # urls() causes the refresh
assert bundle2.urls() == ['/out-new?new']
assert bundle2.get_version() == 'new'
# The reverse works as well.
env2.versions.version = 'latest'
bundle2.build(force=True)
assert bundle1.urls() == bundle2.urls() == ['/out-latest?latest']
def test_story_of_two_envs(self):
"""If an app is served by multiple processes, and auto_build is used,
if one process rebuilds a bundle, the other one must know (instead of
continuing to serve the old version.
For this reason, if auto_build is enabled, the version will always be
determined anew in every request, rather than using a cached version.
(This is the reason why get_version() has the refresh=True option).
"""
# Prepare a manifest and bundle in env1. Use a file manifest
env1 = self.env
env1.url_expire = True
bundle1 = self.mkbundle('in', output='out-%(version)s')
# Prepare an identical setup, simulating the second process
env2 = Environment(env1.directory, env1.url)
env2.config.update(copy.deepcopy(env1.config._dict))
bundle2 = self.mkbundle('in', output='out-%(version)s')
bundle2.env = env2
# Both have auto build enabled, both are using the same manifest
env1.auto_build = env2.auto_build = True
env1.manifest = 'file'; env2.manifest = 'file'
env1.updater = 'timestamp'; env2.updater = 'timestamp'
# Do the initial build, both envs think they are running the
# latest version.
env1.versions.version = bundle1.version = 'old'
env2.versions.version = bundle2.version = 'old'
bundle1.build()
assert env2.updater.needs_rebuild(bundle2, env2) == False
# At this point, both return the old version in urls
assert bundle1.urls() ==['/out-old?old']
assert bundle2.urls() ==['/out-old?old']
# Now let env1 do an update.
env1.versions.version = 'new'
bundle1.build(force=True)
assert bundle1.urls() == ['/out-new?new']
# If auto_build is False, env2 will continue to use the old version.
env2.auto_build = False
assert bundle2.urls() == ['/out-old?old']
# However, if auto_build is True, env2 will know the new version.
# This is because env1 wrote it to the manifest during build.
env2.auto_build = True
assert bundle2.get_version() == 'old' # urls() causes the refresh
assert bundle2.urls() == ['/out-new?new']
assert bundle2.get_version() == 'new'
# The reverse works as well.
env2.versions.version = 'latest'
bundle2.build(force=True)
assert bundle1.urls() == bundle2.urls() == ['/out-latest?latest']
