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# Copyright 2018 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""This script is used to synthesize generated parts of this library."""
import re
import textwrap
import synthtool as s
from synthtool import gcp
from synthtool.languages import python
common = gcp.CommonTemplates()
default_version = "v1"
for library in s.get_staging_dirs(default_version):
# Work around gapic generator bug https://github.com/googleapis/gapic-generator-python/issues/902
s.replace(
library / f"google/pubsub_{library.name}/types/*.py",
r""".
Attributes:""",
r""".\n
Attributes:""",
)
# Work around gapic generator bug https://github.com/googleapis/gapic-generator-python/issues/902
s.replace(
library / f"google/pubsub_{library.name}/types/*.py",
r""".
Attributes:""",
r""".\n
Attributes:""",
)
# DEFAULT SCOPES and SERVICE_ADDRESS are being used. so let's force them in.
s.replace(
library / f"google/pubsub_{library.name}/services/*er/*client.py",
r"""DEFAULT_ENDPOINT = \"pubsub\.googleapis\.com\"""",
"""
# The scopes needed to make gRPC calls to all of the methods defined in
# this service
_DEFAULT_SCOPES = (
'https://www.googleapis.com/auth/cloud-platform',
'https://www.googleapis.com/auth/pubsub',
)
SERVICE_ADDRESS = "pubsub.googleapis.com:443"
\"""The default address of the service.\"""
\g<0>""",
)
# Modify GRPC options in transports.
count = s.replace(
[
library / f"google/pubsub_{library.name}/services/*/transports/grpc*",
library / f"tests/unit/gapic/pubsub_{library.name}/*",
],
"options=\[.*?\]",
"""options=[
("grpc.max_send_message_length", -1),
("grpc.max_receive_message_length", -1),
("grpc.max_metadata_size", 4 * 1024 * 1024),
("grpc.keepalive_time_ms", 30000),
]""",
flags=re.MULTILINE | re.DOTALL,
)
if count < 15:
raise Exception("Expected replacements for gRPC channel options not made.")
# If the emulator is used, force an insecure gRPC channel to avoid SSL errors.
clients_to_patch = [
library / f"google/pubsub_{library.name}/services/publisher/client.py",
library / f"google/pubsub_{library.name}/services/subscriber/client.py",
library / f"google/pubsub_{library.name}/services/schema_service/client.py",
]
err_msg = (
"Expected replacements for gRPC channel to use with the emulator not made."
)
count = s.replace(clients_to_patch, r"import os", "import functools\n\g<0>")
if count < len(clients_to_patch):
raise Exception(err_msg)
count = s.replace(
clients_to_patch,
f"from \.transports\.base",
"\nimport grpc\n\g<0>",
)
if count < len(clients_to_patch):
raise Exception(err_msg)
count = s.replace(
clients_to_patch,
r"Transport = type\(self\)\.get_transport_class\(transport\)",
"""\g<0>
emulator_host = os.environ.get("PUBSUB_EMULATOR_HOST")
if emulator_host:
if issubclass(Transport, type(self)._transport_registry["grpc"]):
channel = grpc.insecure_channel(target=emulator_host)
else:
channel = grpc.aio.insecure_channel(target=emulator_host)
Transport = functools.partial(Transport, channel=channel)
""",
)
if count < len(clients_to_patch):
raise Exception(err_msg)
# Monkey patch the streaming_pull() GAPIC method to disable pre-fetching stream
# results.
s.replace(
library / f"google/pubsub_{library.name}/services/subscriber/client.py",
(
r"# Wrap the RPC method.*\n"
r"\s+# and friendly error.*\n"
r"\s+rpc = self\._transport\._wrapped_methods\[self\._transport\.streaming_pull\]"
),
"""
# Wrappers in api-core should not automatically pre-fetch the first
# stream result, as this breaks the stream when re-opening it.
# https://github.com/googleapis/python-pubsub/issues/93#issuecomment-630762257
self._transport.streaming_pull._prefetch_first_result_ = False
\g<0>""",
)
# Emit deprecation warning if return_immediately flag is set with synchronous pull.
s.replace(
library / f"google/pubsub_{library.name}/services/subscriber/*client.py",
r"import pkg_resources",
"import warnings\n\g<0>",
)
count = s.replace(
library / f"google/pubsub_{library.name}/services/subscriber/*client.py",
r"""
([^\n\S]+(?:async\ )?def\ pull\(.*?->\ pubsub\.PullResponse:.*?)
((?P<indent>[^\n\S]+)\#\ Wrap\ the\ RPC\ method)
""",
textwrap.dedent(
"""
\g<1>
\g<indent>if request.return_immediately:
\g<indent> warnings.warn(
\g<indent> "The return_immediately flag is deprecated and should be set to False.",
\g<indent> category=DeprecationWarning,
\g<indent> )
\g<2>"""
),
flags=re.MULTILINE | re.DOTALL | re.VERBOSE,
)
if count != 2:
raise Exception("Too many or too few replacements in pull() methods.")
# Silence deprecation warnings in pull() method flattened parameter tests.
s.replace(
library / f"tests/unit/gapic/pubsub_{library.name}/test_subscriber.py",
"import mock",
"\g<0>\nimport warnings",
)
count = s.replace(
library / f"tests/unit/gapic/pubsub_{library.name}/test_subscriber.py",
textwrap.dedent(
r"""
([^\n\S]+# Call the method with a truthy value for each flattened field,
[^\n\S]+# using the keyword arguments to the method\.)
\s+(client\.pull\(.*?\))"""
),
"""\n\g<1>
with warnings.catch_warnings():
warnings.simplefilter("ignore", category=DeprecationWarning)
\g<2>""",
flags=re.MULTILINE | re.DOTALL,
)
if count < 1:
raise Exception("Catch warnings replacement failed.")
count = s.replace(
library / f"tests/unit/gapic/pubsub_{library.name}/test_subscriber.py",
textwrap.dedent(
r"""
([^\n\S]+# Call the method with a truthy value for each flattened field,
[^\n\S]+# using the keyword arguments to the method\.)
\s+response = (await client\.pull\(.*?\))"""
),
"""\n\g<1>
with warnings.catch_warnings():
warnings.simplefilter("ignore", category=DeprecationWarning)
\g<2>""",
flags=re.MULTILINE | re.DOTALL,
)
if count < 1:
raise Exception("Catch warnings replacement failed.")
# Make sure that client library version is present in user agent header.
s.replace(
[
library
/ f"google/pubsub_{library.name}/services/publisher/async_client.py",
library / f"google/pubsub_{library.name}/services/publisher/client.py",
library
/ f"google/pubsub_{library.name}/services/publisher/transports/base.py",
library
/ f"google/pubsub_{library.name}/services/schema_service/async_client.py",
library / f"google/pubsub_{library.name}/services/schema_service/client.py",
library
/ f"google/pubsub_{library.name}/services/schema_service/transports/base.py",
library
/ f"google/pubsub_{library.name}/services/subscriber/async_client.py",
library / f"google/pubsub_{library.name}/services/subscriber/client.py",
library
/ f"google/pubsub_{library.name}/services/subscriber/transports/base.py",
],
r"""gapic_version=(pkg_resources\.get_distribution\(\s+)['"]google-cloud-pubsub['"]""",
"client_library_version=\g<1>'google-cloud-pubsub'",
)
# Docstrings of *_iam_policy() methods are formatted poorly and must be fixed
# in order to avoid docstring format warnings in docs.
s.replace(
library / f"google/pubsub_{library.name}/services/*er/client.py",
r"(\s+)Args:",
"\n\g<1>Args:",
)
s.replace(
library / f"google/pubsub_{library.name}/services/*er/client.py",
r"(\s+)\*\*JSON Example\*\*\s+::",
"\n\g<1>**JSON Example**::\n",
)
s.replace(
library / f"google/pubsub_{library.name}/services/*er/client.py",
r"(\s+)\*\*YAML Example\*\*\s+::",
"\n\g<1>**YAML Example**::\n",
)
s.replace(
library / f"google/pubsub_{library.name}/services/*er/client.py",
r"(\s+)For a description of IAM and its features, see",
"\n\g<0>",
)
# Allow timeout to be an instance of google.api_core.timeout.*
s.replace(
library / f"google/pubsub_{library.name}/types/__init__.py",
r"from \.pubsub import \(",
"from typing import Union\n\n\g<0>",
)
s.replace(
library / f"google/pubsub_{library.name}/types/__init__.py",
r"__all__ = \(\n",
textwrap.dedent(
'''\
TimeoutType = Union[
int,
float,
"google.api_core.timeout.ConstantTimeout",
"google.api_core.timeout.ExponentialTimeout",
]
"""The type of the timeout parameter of publisher client methods."""
\g<0> "TimeoutType",'''
),
)
s.replace(
library / f"google/pubsub_{library.name}/services/publisher/*client.py",
r"from google.api_core import retry as retries.*\n",
"\g<0>from google.api_core import timeout as timeouts # type: ignore\n",
)
s.replace(
library / f"google/pubsub_{library.name}/services/publisher/*client.py",
f"from google\.pubsub_{library.name}\.types import pubsub",
f"\g<0>\nfrom google.pubsub_{library.name}.types import TimeoutType",
)
s.replace(
library / f"google/pubsub_{library.name}/services/publisher/*client.py",
r"(\s+)timeout: float = None.*\n",
f"\g<1>timeout: TimeoutType = gapic_{library.name}.method.DEFAULT,",
)
s.replace(
library / f"google/pubsub_{library.name}/services/publisher/*client.py",
r"([^\S\r\n]+)timeout \(float\): (.*)\n",
("\g<1>timeout (TimeoutType):\n" "\g<1> \g<2>\n"),
)
# Override the default max retry deadline for publisher methods.
count = s.replace(
library / f"google/pubsub_{library.name}/services/publisher/transports/base.py",
r"deadline=60\.0",
"deadline=600.0",
)
if count < 9:
raise Exception(
"Default retry deadline not overriden for all publisher methods."
)
# The namespace package declaration in google/cloud/__init__.py should be excluded
# from coverage.
count = s.replace(
library / ".coveragerc",
"google/pubsub/__init__.py",
"""google/cloud/__init__.py
google/pubsub/__init__.py""",
)
if count < 1:
raise Exception(".coveragerc replacement failed.")
# fix the package name in samples/generated_samples to reflect
# the package on pypi. https://pypi.org/project/google-cloud-pubsub/
s.replace(
library / "samples/generated_samples/**/*.py",
"pip install google-pubsub",
"pip install google-cloud-pubsub",
)
s.move(
library,
excludes=[
"docs/**/*",
"nox.py",
"README.rst",
"setup.py",
f"google/cloud/pubsub_{library.name}/__init__.py",
f"google/cloud/pubsub_{library.name}/types.py",
],
)
s.remove_staging_dirs()
# ----------------------------------------------------------------------------
# Add templated files
# ----------------------------------------------------------------------------
templated_files = gcp.CommonTemplates().py_library(
microgenerator=True,
samples=True,
cov_level=100,
unit_test_python_versions=["3.6", "3.7", "3.8", "3.9", "3.10"],
system_test_python_versions=["3.10"],
system_test_external_dependencies=["psutil"],
)
s.move(templated_files, excludes=[".coveragerc", ".github/CODEOWNERS"])
python.configure_previous_major_version_branches()
# ----------------------------------------------------------------------------
# Samples templates
# ----------------------------------------------------------------------------
python.py_samples()
# ----------------------------------------------------------------------------
# Add mypy nox session.
# ----------------------------------------------------------------------------
s.replace(
"noxfile.py",
r"LINT_PATHS = \[.*?\]",
'\g<0>\n\nMYPY_VERSION = "mypy==0.910"',
)
s.replace(
"noxfile.py", r'"blacken",', '\g<0>\n "mypy",',
)
s.replace(
"noxfile.py",
r"nox\.options\.error_on_missing_interpreters = True",
textwrap.dedent(
''' \g<0>
@nox.session(python=DEFAULT_PYTHON_VERSION)
def mypy(session):
"""Run type checks with mypy."""
session.install("-e", ".[all]")
session.install(MYPY_VERSION)
# Just install the type info directly, since "mypy --install-types" might
# require an additional pass.
session.install("types-protobuf", "types-setuptools")
# Version 2.1.1 of google-api-core version is the first type-checked release.
# Version 2.2.0 of google-cloud-core version is the first type-checked release.
session.install(
"google-api-core[grpc]>=2.1.1",
"google-cloud-core>=2.2.0",
)
# TODO: Only check the hand-written layer, the generated code does not pass
# mypy checks yet.
# https://github.com/googleapis/gapic-generator-python/issues/1092
session.run("mypy", "google/cloud")'''
),
)
# ----------------------------------------------------------------------------
# Add mypy_samples nox session.
# ----------------------------------------------------------------------------
s.replace(
"noxfile.py",
r' "mypy",',
'\g<0>\n # https://github.com/googleapis/python-pubsub/pull/552#issuecomment-1016256936'
'\n # "mypy_samples", # TODO: uncomment when the check passes',
)
s.replace(
"noxfile.py",
r'session\.run\("mypy", "google/cloud"\)',
textwrap.dedent(
''' \g<0>
@nox.session(python=DEFAULT_PYTHON_VERSION)
def mypy_samples(session):
"""Run type checks with mypy."""
session.install("-e", ".[all]")
session.install("pytest")
session.install(MYPY_VERSION)
# Just install the type info directly, since "mypy --install-types" might
# require an additional pass.
session.install("types-mock", "types-protobuf", "types-setuptools")
session.run(
"mypy",
"--config-file",
str(CURRENT_DIRECTORY / "samples" / "snippets" / "mypy.ini"),
"--no-incremental", # Required by warn-unused-configs from mypy.ini to work
"samples/",
)'''
),
)
# Only consider the hand-written layer when assessing the test coverage.
s.replace(
"noxfile.py", "--cov=google", "--cov=google/cloud",
)
# Final code style adjustments.
s.shell.run(["nox", "-s", "blacken"], hide_output=False)