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import os

import shutil

import subprocess

import tempfile

from typing import TYPE_CHECKING

from sentry_sdk.consts import VERSION as SDK_VERSION

if TYPE_CHECKING:

from typing import Optional

DIST_PATH = "dist" # created by "uv build", needs to be run before running this script

AWS_DEPENDENCY_GROUP = "aws"

PYTHON_SITE_PACKAGES = "python" # see https://docs.aws.amazon.com/lambda/latest/dg/configuration-layers.html#configuration-layers-path

class LayerBuilder:

def __init__(

self,

base_dir: str,

out_zip_filename: "Optional[str]" = None,

) -> None:

self.base_dir = base_dir

self.python_site_packages = os.path.join(self.base_dir, PYTHON_SITE_PACKAGES)

self.out_zip_filename = (

f"sentry-python-serverless-{SDK_VERSION}.zip"

if out_zip_filename is None

else out_zip_filename

)

def make_directories(self) -> None:

os.makedirs(self.python_site_packages)

def install_python_packages(self) -> None:

# Install requirements for Lambda Layer (these are more limited than the SDK requirements,

# because Lambda does not support the newest versions of some packages)

subprocess.check_call(

[

"uv",

"pip",

"install",

"--group",

AWS_DEPENDENCY_GROUP,

"--target",

self.python_site_packages,

],

)

sentry_python_sdk = os.path.join(

DIST_PATH,

f"sentry_sdk-{SDK_VERSION}-py3-none-any.whl",

)

subprocess.run(

[

"uv",

"pip",

"install",

"--no-cache-dir", # always access PyPI

"--no-deps", # the right depencencies have been installed in the call above

"--quiet",

sentry_python_sdk,

"--target",

self.python_site_packages,

],

check=True,

)

def create_init_serverless_sdk_package(self) -> None:

"""

Method that creates the init_serverless_sdk pkg in the

sentry-python-serverless zip

"""

serverless_sdk_path = (

f"{self.python_site_packages}/sentry_sdk/integrations/init_serverless_sdk"

)

if not os.path.exists(serverless_sdk_path):

os.makedirs(serverless_sdk_path)

shutil.copy(

"scripts/init_serverless_sdk.py", f"{serverless_sdk_path}/__init__.py"

)

def zip(self) -> None:

subprocess.run(

[

"zip",

"-q", # Quiet

"-x", # Exclude files

"**/__pycache__/*", # Files to be excluded

"-r", # Recurse paths

self.out_zip_filename, # Output filename

PYTHON_SITE_PACKAGES, # Files to be zipped

],

cwd=self.base_dir,

check=True, # Raises CalledProcessError if exit status is non-zero

)

shutil.copy(

os.path.join(self.base_dir, self.out_zip_filename),

os.path.abspath(DIST_PATH),

)

def build_packaged_zip(base_dir=None, out_zip_filename=None):

if base_dir is None:

base_dir = tempfile.mkdtemp()

layer_builder = LayerBuilder(base_dir, out_zip_filename=out_zip_filename)

layer_builder.make_directories()

layer_builder.install_python_packages()

layer_builder.create_init_serverless_sdk_package()

layer_builder.zip()

# Just for debugging

dist_path = os.path.abspath(DIST_PATH)

print("Created Lambda Layer package with this information:")

print(" - Base directory for generating package: {}".format(layer_builder.base_dir))

print(" - Package zip filename: {}".format(layer_builder.out_zip_filename))

print(" - Copied package zip to: {}".format(dist_path))

if __name__ == "__main__":

build_packaged_zip()