def test_2(self):
"""basic resource loading test."""
pool = ResourcePool(cache_size=None)
pool.register_resource(ResourceA)
pool.register_resource(ResourceB)
# test that resource matches our request, and its data isn't loaded
variables = dict(foo="hey", bah="ho")
resource = pool.get_resource("resource.a", variables)
self.assertTrue(isinstance(resource, ResourceA))
self.assertEqual(resource.variables, variables)
# test that a request via a resource's own handle gives the same resource
resource_ = pool.get_resource_from_handle(resource.handle)
self.assertTrue(resource_ is resource)
# test that the same request again gives the cached resource
resource_ = pool.get_resource("resource.a", variables)
self.assertTrue(resource_ is resource)
# clear caches, then test that the same request gives a new resource
pool.clear_caches()
resource_ = pool.get_resource("resource.a", variables)
self.assertEqual(resource_.variables, variables)
self.assertTrue(resource_ is not resource)
class PackageRepositoryManager(object):
"""Package repository manager.
Contains instances of `PackageRepository` for each repository pointed to
by the 'packages_path' config setting (also commonly set using the
environment variable REZ_PACKAGES_PATH).
"""
def __init__(self):
cache_size = config.resource_caching_maxsize
if cache_size < 0:
cache_size = None
self.cache_size = cache_size
self.pool = ResourcePool(cache_size=cache_size)
@lru_cache(maxsize=None)
def get_repository(self, path):
"""Get a package repository.
Args:
path (str): Entry from the 'packages_path' config setting. This may
simply be a path (which is managed by the 'filesystem' package
repository plugin), or a string in the form "type@location",
where 'type' identifies the repository plugin type to use.
Returns:
`PackageRepository` instance.
"""
# normalise
parts = path.split('@', 1)
if len(parts) == 1:
parts = ("filesystem", parts[0])
repo_type, location = parts
if repo_type == "filesystem":
# choice of abspath here vs realpath is deliberate. Realpath gives
# canonical path, which can be a problem if two studios are sharing
# packages, and have mirrored package paths, but some are actually
# different paths, symlinked to look the same. It happened!
location = os.path.abspath(location)
normalised_path = "%s@%s" % (repo_type, location)
return self._get_repository(normalised_path)
def are_same(self, path_1, path_2):
"""Test that `path_1` and `path_2` refer to the same repository.
This is more reliable than testing that the strings match, since slightly
different strings might refer to the same repository (consider small
differences in a filesystem path for example, eg '//svr/foo', '/svr/foo').
Returns:
True if the paths refer to the same repository, False otherwise.
"""
if path_1 == path_2:
return True
repo_1 = self.get_repository(path_1)
repo_2 = self.get_repository(path_2)
return (repo_1.uid == repo_2.uid)
def get_resource(self, resource_key, repository_type, location,
**variables):
"""Get a resource.
Attempts to get and return a cached version of the resource if
available, otherwise a new resource object is created and returned.
Args:
resource_key (`str`): Name of the type of `Resources` to find
repository_type (`str`): What sort of repository to look for the
resource in
location (`str`): location for the repository
variables: data to identify / store on the resource
Returns:
`PackageRepositoryResource` instance.
"""
path = "%s@%s" % (repository_type, location)
repo = self.get_repository(path)
resource = repo.get_resource(**variables)
return resource
def get_resource_from_handle(self, resource_handle):
"""Get a resource.
Args:
resource_handle (`ResourceHandle`): Handle of the resource.
Returns:
`PackageRepositoryResource` instance.
"""
repo_type = resource_handle.get("repository_type")
location = resource_handle.get("location")
if not (repo_type and location):
raise ValueError("PackageRepositoryManager requires "
"resource_handle objects to have a "
"repository_type and location defined")
path = "%s@%s" % (repo_type, location)
repo = self.get_repository(path)
resource = repo.get_resource_from_handle(resource_handle)
return resource
def clear_caches(self):
"""Clear all cached data."""
self.get_repository.cache_clear()
self._get_repository.cache_clear()
self.pool.clear_caches()
@lru_cache(maxsize=None)
def _get_repository(self, path):
repo_type, location = path.split('@', 1)
cls = plugin_manager.get_plugin_class('package_repository', repo_type)
repo = cls(location, self.pool)
return repo
class PackageRepositoryManager(object):
"""Package repository manager.
Contains instances of `PackageRepository` for each repository pointed to
by the 'packages_path' config setting (also commonly set using the
environment variable REZ_PACKAGES_PATH).
"""
def __init__(self):
cache_size = config.resource_caching_maxsize
if cache_size < 0:
cache_size = None
self.cache_size = cache_size
self.pool = ResourcePool(cache_size=cache_size)
@lru_cache(maxsize=None)
def get_repository(self, path):
"""Get a package repository.
Args:
path (str): Entry from the 'packages_path' config setting. This may
simply be a path (which is managed by the 'filesystem' package
repository plugin), or a string in the form "type@location",
where 'type' identifies the repository plugin type to use.
Returns:
`PackageRepository` instance.
"""
# normalise
parts = path.split('@', 1)
if len(parts) == 1:
parts = ("filesystem", parts[0])
repo_type, location = parts
if repo_type == "filesystem":
# choice of abspath here vs realpath is deliberate. Realpath gives
# canonical path, which can be a problem if two studios are sharing
# packages, and have mirrored package paths, but some are actually
# different paths, symlinked to look the same. It happened!
location = os.path.abspath(location)
normalised_path = "%s@%s" % (repo_type, location)
return self._get_repository(normalised_path)
def are_same(self, path_1, path_2):
"""Test that `path_1` and `path_2` refer to the same repository.
This is more reliable than testing that the strings match, since slightly
different strings might refer to the same repository (consider small
differences in a filesystem path for example, eg '//svr/foo', '/svr/foo').
Returns:
True if the paths refer to the same repository, False otherwise.
"""
if path_1 == path_2:
return True
repo_1 = self.get_repository(path_1)
repo_2 = self.get_repository(path_2)
return (repo_1.uid == repo_2.uid)
def get_resource(self, resource_key, repository_type, location,
**variables):
"""Get a resource.
Attempts to get and return a cached version of the resource if
available, otherwise a new resource object is created and returned.
Args:
resource_key (`str`): Name of the type of `Resources` to find
repository_type (`str`): What sort of repository to look for the
resource in
location (`str`): location for the repository
variables: data to identify / store on the resource
Returns:
`PackageRepositoryResource` instance.
"""
path = "%s@%s" % (repository_type, location)
repo = self.get_repository(path)
resource = repo.get_resource(**variables)
return resource
def get_resource_from_handle(self, resource_handle):
"""Get a resource.
Args:
resource_handle (`ResourceHandle`): Handle of the resource.
Returns:
`PackageRepositoryResource` instance.
"""
repo_type = resource_handle.get("repository_type")
location = resource_handle.get("location")
if not (repo_type and location):
raise ValueError("PackageRepositoryManager requires "
"resource_handle objects to have a "
"repository_type and location defined")
path = "%s@%s" % (repo_type, location)
repo = self.get_repository(path)
resource = repo.get_resource_from_handle(resource_handle)
return resource
def clear_caches(self):
"""Clear all cached data."""
self.get_repository.cache_clear()
self._get_repository.cache_clear()
self.pool.clear_caches()
@lru_cache(maxsize=None)
def _get_repository(self, path):
repo_type, location = path.split('@', 1)
cls = plugin_manager.get_plugin_class('package_repository', repo_type)
repo = cls(location, self.pool)
return repo
class PackageRepositoryManager(object):
"""Package repository manager.
Contains instances of `PackageRepository` for each repository pointed to
by the 'packages_path' config setting (also commonly set using the
environment variable REZ_PACKAGES_PATH).
"""
def __init__(self):
cache_size = config.resource_caching_maxsize
if cache_size < 0:
cache_size = None
self.pool = ResourcePool(cache_size=cache_size)
@lru_cache(maxsize=None)
def get_repository(self, path):
"""Get a package repository.
Args:
path (str): Entry from the 'packages_path' config setting. This may
simply be a path (which is managed by the 'filesystem' package
repository plugin), or a string in the form "type@location",
where 'type' identifies the repository plugin type to use.
Returns:
`PackageRepository` instance.
"""
# normalise
parts = path.split('@', 1)
if len(parts) == 1:
parts = ("filesystem", parts[0])
repo_type, location = parts
if repo_type == "filesystem":
location = os.path.realpath(location)
normalised_path = "%s@%s" % (repo_type, location)
return self._get_repository(normalised_path)
def are_same(self, path_1, path_2):
"""Test that `path_1` and `path_2` refer to the same repository.
This is more reliable than testing that the strings match, since slightly
different strings might refer to the same repository (consider small
differences in a filesystem path for example, eg '//svr/foo', '/svr/foo').
Returns:
True if the paths refer to the same repository, False otherwise.
"""
if path_1 == path_2:
return True
repo_1 = self.get_repository(path_1)
repo_2 = self.get_repository(path_2)
return (repo_1.uid == repo_2.uid)
def get_resource(self, resource_handle):
"""Get a resource.
Args:
resource_handle (`ResourceHandle`): Handle of the resource.
Returns:
`PackageRepositoryResource` instance.
"""
repo_type = resource_handle.get("repository_type")
location = resource_handle.get("location")
path = "%s@%s" % (repo_type, location)
repo = self.get_repository(path)
resource = repo.get_resource_from_handle(resource_handle)
return resource
def clear_caches(self):
"""Clear all cached data."""
self.get_repository.cache_clear()
self._get_repository.cache_clear()
self.pool.clear_caches()
@lru_cache(maxsize=None)
def _get_repository(self, path):
repo_type, location = path.split('@', 1)
cls = plugin_manager.get_plugin_class('package_repository', repo_type)
repo = cls(location, self.pool)
return repo
