def download(self, layer: LayerVersion, force=False) -> LayerVersion:
"""
Download a given layer to the local cache.
Parameters
----------
layer samcli.commands.local.lib.provider.Layer
Layer representing the layer to be downloaded.
force bool
True to download the layer even if it exists already on the system
Returns
-------
Path
Path object that represents where the layer is download to
"""
if layer.is_defined_within_template:
LOG.info("%s is a local Layer in the template", layer.name)
# the template file containing the layer might not be in the same directory as root template file
# therefore we need to join the path of template directory and codeuri in case codeuri is a relative path.
try:
stack = next(stack for stack in self._stacks
if stack.stack_path == layer.stack_path)
except StopIteration as ex:
raise RuntimeError(
f"Cannot find stack that matches layer's stack_path {layer.stack_path}"
) from ex
codeuri = (layer.codeuri
if os.path.isabs(layer.codeuri) else os.path.normpath(
os.path.join(os.path.dirname(stack.location),
layer.codeuri)))
layer.codeuri = resolve_code_path(self.cwd, codeuri)
return layer
layer_path = Path(self.layer_cache).resolve().joinpath(layer.name)
is_layer_downloaded = self._is_layer_cached(layer_path)
layer.codeuri = str(layer_path)
if is_layer_downloaded and not force:
LOG.info("%s is already cached. Skipping download", layer.arn)
return layer
layer_zip_path = layer.codeuri + ".zip"
layer_zip_uri = self._fetch_layer_uri(layer)
unzip_from_uri(
layer_zip_uri,
layer_zip_path,
unzip_output_dir=layer.codeuri,
progressbar_label="Downloading {}".format(layer.layer_arn),
)
return layer
def download(self, layer: LayerVersion, force=False) -> LayerVersion:
"""
Download a given layer to the local cache.
Parameters
----------
layer samcli.commands.local.lib.provider.Layer
Layer representing the layer to be downloaded.
force bool
True to download the layer even if it exists already on the system
Returns
-------
Path
Path object that represents where the layer is download to
"""
if layer.is_defined_within_template:
LOG.info("%s is a local Layer in the template", layer.name)
layer.codeuri = resolve_code_path(self.cwd, layer.codeuri)
return layer
layer_path = Path(self.layer_cache).resolve().joinpath(layer.name)
is_layer_downloaded = self._is_layer_cached(layer_path)
layer.codeuri = str(layer_path)
if is_layer_downloaded and not force:
LOG.info("%s is already cached. Skipping download", layer.arn)
return layer
layer_zip_path = layer.codeuri + ".zip"
layer_zip_uri = self._fetch_layer_uri(layer)
unzip_from_uri(
layer_zip_uri,
layer_zip_path,
unzip_output_dir=layer.codeuri,
progressbar_label="Downloading {}".format(layer.layer_arn),
)
return layer
def test_codeuri_is_setable(self):
layer_version = LayerVersion(
"arn:aws:lambda:region:account-id:layer:layer-name:1", None)
layer_version.codeuri = "./some_value"
self.assertEqual(layer_version.codeuri, "./some_value")