def retrieve(data_item, cache=None):
"""
"""
backend = BackendComponent(env)
if cache is None:
cache = get_cache_context()
# compute a cache path where the file *would* be cached
with cache:
item_id = generate_hash(data_item.location, data_item.format)
path = cache.relative_path(item_id)
logger.debug("Retrieving %s (ID: %s)" % (data_item, item_id))
if item_id in cache:
logger.debug("Item %s is already in the cache." % item_id)
return path
if data_item.package is None and data_item.storage:
return _retrieve_from_storage(
backend, data_item, data_item.storage, item_id, path, cache
)
elif data_item.package:
return _extract_from_package(
backend, data_item, data_item.package, item_id, path, cache
)
else:
return data_item.location
def retrieve(data_item, cache=None):
"""
"""
backend = BackendComponent(env)
if cache is None:
cache = get_cache_context()
# compute a cache path where the file *would* be cached
with cache:
item_id = generate_hash(data_item.location, data_item.format)
path = cache.relative_path(item_id)
logger.debug("Retrieving %s (ID: %s)" % (data_item, item_id))
if item_id in cache:
logger.debug("Item %s is already in the cache." % item_id)
return path
if data_item.package is None and data_item.storage:
return _retrieve_from_storage(backend, data_item, data_item.storage, item_id, path, cache)
elif data_item.package:
return _extract_from_package(backend, data_item, data_item.package, item_id, path, cache)
else:
return data_item.location
def retrieve(data_item, cache=None):
""" Retrieve a :class:`DataItem <eoxserver.backends.models.DataItem>`, i.e:
make it locally available. This takes into account any download from a
:class:`Storage <eoxserver.backends.models.Storage>` and any unpacking from
a :class:`Package <eoxserver.backends.models.Package>` the ``DataItem``
might be contained in.
:param data_item: the :class:`DataItem <eoxserver.backends.models.DataItem>`
to connect retrieve
:param cache: an instance of :class:`CacheContext
<eoxserver.backends.cache.CacheContext>` or ``None``
if the caching shall be handled internally
"""
backend = BackendComponent(env)
if cache is None:
cache = get_cache_context()
# compute a cache path where the file *would* be cached
with cache:
item_id = generate_hash(data_item.location, data_item.format)
path = cache.relative_path(item_id)
logger.debug("Retrieving %s (ID: %s)" % (data_item, item_id))
if item_id in cache:
logger.debug("Item %s is already in the cache." % item_id)
return path
if data_item.package is None and data_item.storage:
return _retrieve_from_storage(
backend, data_item, data_item.storage, item_id, path, cache
)
elif data_item.package:
return _extract_from_package(
backend, data_item, data_item.package, item_id, path, cache
)
else:
return data_item.location
def retrieve(data_item, cache=None):
""" Retrieve a :class:`DataItem <eoxserver.backends.models.DataItem>`, i.e:
make it locally available. This takes into account any download from a
:class:`Storage <eoxserver.backends.models.Storage>` and any unpacking from
a :class:`Package <eoxserver.backends.models.Package>` the ``DataItem``
might be contained in.
:param data_item: the :class:`DataItem <eoxserver.backends.models.DataItem>`
to connect retrieve
:param cache: an instance of :class:`CacheContext
<eoxserver.backends.cache.CacheContext>` or ``None``
if the caching shall be handled internally
"""
backend = BackendComponent(env)
if cache is None:
cache = get_cache_context()
# compute a cache path where the file *would* be cached
with cache:
item_id = generate_hash(data_item.location, data_item.format)
path = cache.relative_path(item_id)
logger.debug("Retrieving %s (ID: %s)" % (data_item, item_id))
if item_id in cache:
logger.debug("Item %s is already in the cache." % item_id)
return path
if data_item.package is None and data_item.storage:
return _retrieve_from_storage(backend, data_item,
data_item.storage, item_id, path,
cache)
elif data_item.package:
return _extract_from_package(backend, data_item, data_item.package,
item_id, path, cache)
else:
return data_item.location
