build.setup.read_version_from_json() - Code Metrics - Inspection of "Merge pull request #23 from kytos-ng/release/2022...." - kytos-ng/flow_stats - Measure and Improve Code Quality continuously with Scrutinizer

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by Vinicius

created 2022-08-11 15:26 UTC

build.setup.read_version_from_json() A

↳ Parent: build.setup

Complexity

Conditions

Size

Total Lines	5
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes

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eloc	4
dl	0
loc	5
rs	10
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cc	1
nop	0

"""Setup script.

Run "python3 setup.py --help-commands" to list all available commands and their
descriptions.
"""
import json
import os
import shutil
import sys
from abc import abstractmethod
from pathlib import Path
from subprocess import CalledProcessError, call, check_call

from setuptools import Command, setup
from setuptools.command.develop import develop
from setuptools.command.egg_info import egg_info
from setuptools.command.install import install

if 'bdist_wheel' in sys.argv:
    raise RuntimeError("This setup.py does not support wheels")

# Paths setup with virtualenv detection
BASE_ENV = Path(os.environ.get('VIRTUAL_ENV', '/'))

NAPP_NAME = 'flow_stats'
NAPP_USERNAME = 'amlight'

# Kytos var folder
VAR_PATH = BASE_ENV / 'var' / 'lib' / 'kytos'
# Path for enabled NApps
ENABLED_PATH = VAR_PATH / 'napps'
# Path to install NApps
INSTALLED_PATH = VAR_PATH / 'napps' / '.installed'
CURRENT_DIR = Path('.').resolve()

# NApps enabled by default
CORE_NAPPS = ['of_core']


class SimpleCommand(Command):
    """Make Command implementation simpler."""

    user_options = []

    @abstractmethod
    def run(self):
        """Run when command is invoked.

        Use *call* instead of *check_call* to ignore failures.
        """

    def initialize_options(self):
        """Set default values for options."""

    def finalize_options(self):
        """Post-process options."""


# pylint: disable=attribute-defined-outside-init, abstract-method
class TestCommand(Command):
    """Test tags decorators."""

    user_options = [
        ("k=", None, "Specify a pytest -k expression."),
    ]

    def get_args(self):
        """Return args to be used in test command."""
        if self.k:
            return f"-k '{self.k}'"
        return ""

    def initialize_options(self):
        """Set default size and type args."""
        self.k = ""

    def finalize_options(self):
        """Post-process."""
        pass


class Cleaner(SimpleCommand):
    """Custom clean command to tidy up the project root."""

    description = 'clean build, dist, pyc and egg from package and docs'

    def run(self):
        """Clean build, dist, pyc and egg from package and docs."""
        call('rm -vrf ./build ./dist ./*.egg-info', shell=True)
        call('find . -name __pycache__ -type d | xargs rm -rf', shell=True)
        call('make -C docs/ clean', shell=True)


class Test(TestCommand):
    """Run all tests."""

    description = "run tests and display results"

    def run(self):
        """Run tests."""
        cmd = f"python3 -m pytest tests/ {self.get_args()}"
        try:
            check_call(cmd, shell=True)
        except CalledProcessError as exc:
            print(exc)
            print('Unit tests failed. Fix the errors above and try again.')
            sys.exit(-1)


class TestCoverage(Test):
    """Display test coverage."""

    description = "run tests and display code coverage"

    def run(self):
        """Run tests quietly and display coverage report."""
        cmd = f"python3 -m pytest --cov=. tests/ {self.get_args()}"
        try:
            check_call(cmd, shell=True)
        except CalledProcessError as exc:
            print(exc)
            print('Coverage tests failed. Fix the errors above and try again.')
            sys.exit(-1)


class Linter(SimpleCommand):
    """Code linters."""

    description = 'lint Python source code'

    def run(self):
        """Run yala."""
        print('Yala is running. It may take several seconds...')
        try:
            check_call('yala *.py tests', shell=True)
            print('No linter error found.')
        except CalledProcessError:
            print('Linter check failed. Fix the error(s) above and try again.')
            sys.exit(-1)


class KytosInstall:
    """Common code for all install types."""

    @staticmethod
    def enable_core_napps():
        """Enable a NAPP by creating a symlink."""
        (ENABLED_PATH / NAPP_USERNAME).mkdir(parents=True, exist_ok=True)
        for napp in CORE_NAPPS:
            napp_path = Path('kytos', napp)
            src = ENABLED_PATH / napp_path
            dst = INSTALLED_PATH / napp_path
            symlink_if_different(src, dst)

    def __str__(self):
        return self.__class__.__name__


class InstallMode(install):
    """Create files in var/lib/kytos."""

    description = 'To install NApps, use kytos-utils. Devs, see "develop".'

    def run(self):
        """Direct users to use kytos-utils to install NApps."""
        print(self.description)


class EggInfo(egg_info):
    """Prepare files to be packed."""

    def run(self):
        """Build css."""
        self._install_deps_wheels()
        super().run()

    @staticmethod
    def _install_deps_wheels():
        """Python wheels are much faster (no compiling)."""
        print("Installing dependencies...")
        check_call(
            [
                sys.executable,
                "-m",
                "pip",
                "install",
                "-r",
                "requirements/run.txt",
            ]
        )


class DevelopMode(develop):
    """Recommended setup for kytos-napps developers.

    Instead of copying the files to the expected directories, a symlink is
    created on the system aiming the current source code.
    """

    description = 'Install NApps in development mode'

    def run(self):
        """Install the package in a developer mode."""
        super().run()
        if self.uninstall:
            shutil.rmtree(str(ENABLED_PATH), ignore_errors=True)
        else:
            self._create_folder_symlinks()
            # self._create_file_symlinks()
            KytosInstall.enable_core_napps()

    @staticmethod
    def _create_folder_symlinks():
        """Symlink to all Kytos NApps folders.

        ./napps/kytos/napp_name will generate a link in
        var/lib/kytos/napps/.installed/kytos/napp_name.
        """
        links = INSTALLED_PATH / NAPP_USERNAME
        links.mkdir(parents=True, exist_ok=True)
        code = CURRENT_DIR
        src = links / NAPP_NAME
        symlink_if_different(src, code)

        (ENABLED_PATH / NAPP_USERNAME).mkdir(parents=True, exist_ok=True)
        dst = ENABLED_PATH / Path(NAPP_USERNAME, NAPP_NAME)
        symlink_if_different(dst, src)

    @staticmethod
    def _create_file_symlinks():
        """Symlink to required files."""
        src = ENABLED_PATH / '__init__.py'
        dst = CURRENT_DIR / '__init__.py'
        symlink_if_different(src, dst)


def symlink_if_different(path, target):
    """Force symlink creation if it points anywhere else."""
    # print(f"symlinking {path} to target: {target}...", end=" ")
    if not path.exists():
        # print(f"path doesn't exist. linking...")
        path.symlink_to(target)
    elif not path.samefile(target):
        # print(f"path exists, but is different. removing and linking...")
        # Exists but points to a different file, so let's replace it
        path.unlink()
        path.symlink_to(target)


def read_version_from_json():
    """Read the NApp version from NApp kytos.json file."""
    file = Path('kytos.json')
    metadata = json.loads(file.read_text(encoding="utf8"))
    return metadata['version']


def read_requirements(path="requirements/run.txt"):
    """Read requirements file and return a list."""
    with open(path, "r", encoding="utf8") as file:
        return [
            line.strip()
            for line in file.readlines()
            if not line.startswith("#")
        ]


setup(name=f'{NAPP_USERNAME}_{NAPP_NAME}',
      version=read_version_from_json(),
      description='Store flow information and show statistics about them.',
      url='http://github.com/kytos-ng/flow_stats',
      author='FIU/AmLight team',
      author_email='[email protected]',
      license='MIT',
      install_requires=read_requirements() + ["setuptools >= 59.6.0"],
      packages=[],
      extras_require={
          'dev': [
              'pytest==7.0.0',
              'pytest-cov==3.0.0',
              'pip-tools',
              'yala',
              'tox',
          ],
      },
      cmdclass={
          'clean': Cleaner,
          'coverage': TestCoverage,
          'develop': DevelopMode,
          'install': InstallMode,
          'lint': Linter,
          'egg_info': EggInfo,
          'test': Test,
      },
      zip_safe=False,
      classifiers=[
          'License :: OSI Approved :: MIT License',
          'Operating System :: POSIX :: Linux',
          'Programming Language :: Python :: 3.9',
          'Topic :: System :: Networking',
      ])


1			"""Setup script.
2
3			Run "python3 setup.py --help-commands" to list all available commands and their
4			descriptions.
5			"""
6			import json
7			import os
8			import shutil
9			import sys
10			from abc import abstractmethod
11			from pathlib import Path
12			from subprocess import CalledProcessError, call, check_call
13
14			from setuptools import Command, setup
15			from setuptools.command.develop import develop
16			from setuptools.command.egg_info import egg_info
17			from setuptools.command.install import install
18
19			if 'bdist_wheel' in sys.argv:
20			raise RuntimeError("This setup.py does not support wheels")
21
22			# Paths setup with virtualenv detection
23			BASE_ENV = Path(os.environ.get('VIRTUAL_ENV', '/'))
24
25			NAPP_NAME = 'flow_stats'
26			NAPP_USERNAME = 'amlight'
27
28			# Kytos var folder
29			VAR_PATH = BASE_ENV / 'var' / 'lib' / 'kytos'
30			# Path for enabled NApps
31			ENABLED_PATH = VAR_PATH / 'napps'
32			# Path to install NApps
33			INSTALLED_PATH = VAR_PATH / 'napps' / '.installed'
34			CURRENT_DIR = Path('.').resolve()
35
36			# NApps enabled by default
37			CORE_NAPPS = ['of_core']
38
39
40			class SimpleCommand(Command):
41			"""Make Command implementation simpler."""
42
43			user_options = []
44
45			@abstractmethod
46			def run(self):
47			"""Run when command is invoked.
48
49			Use call instead of check_call to ignore failures.
50			"""
51
52			def initialize_options(self):
53			"""Set default values for options."""
54
55			def finalize_options(self):
56			"""Post-process options."""
57
58
59			# pylint: disable=attribute-defined-outside-init, abstract-method
60			class TestCommand(Command):
61			"""Test tags decorators."""
62
63			user_options = [
64			("k=", None, "Specify a pytest -k expression."),
65			]
66
67			def get_args(self):
68			"""Return args to be used in test command."""
69			if self.k:
70			return f"-k '{self.k}'"
71			return ""
72
73			def initialize_options(self):
74			"""Set default size and type args."""
75			self.k = ""
76
77			def finalize_options(self):
78			"""Post-process."""
79			pass
80
81
82			class Cleaner(SimpleCommand):
83			"""Custom clean command to tidy up the project root."""
84
85			description = 'clean build, dist, pyc and egg from package and docs'
86
87			def run(self):
88			"""Clean build, dist, pyc and egg from package and docs."""
89			call('rm -vrf ./build ./dist ./*.egg-info', shell=True)
90			call('find . -name __pycache__ -type d \| xargs rm -rf', shell=True)
91			call('make -C docs/ clean', shell=True)
92
93
94			class Test(TestCommand):
95			"""Run all tests."""
96
97			description = "run tests and display results"
98
99			def run(self):
100			"""Run tests."""
101			cmd = f"python3 -m pytest tests/ {self.get_args()}"
102			try:
103			check_call(cmd, shell=True)
104			except CalledProcessError as exc:
105			print(exc)
106			print('Unit tests failed. Fix the errors above and try again.')
107			sys.exit(-1)
108
109
110			class TestCoverage(Test):
111			"""Display test coverage."""
112
113			description = "run tests and display code coverage"
114
115			def run(self):
116			"""Run tests quietly and display coverage report."""
117			cmd = f"python3 -m pytest --cov=. tests/ {self.get_args()}"
118			try:
119			check_call(cmd, shell=True)
120			except CalledProcessError as exc:
121			print(exc)
122			print('Coverage tests failed. Fix the errors above and try again.')
123			sys.exit(-1)
124
125
126			class Linter(SimpleCommand):
127			"""Code linters."""
128
129			description = 'lint Python source code'
130
131			def run(self):
132			"""Run yala."""
133			print('Yala is running. It may take several seconds...')
134			try:
135			check_call('yala *.py tests', shell=True)
136			print('No linter error found.')
137			except CalledProcessError:
138			print('Linter check failed. Fix the error(s) above and try again.')
139			sys.exit(-1)
140
141
142			class KytosInstall:
143			"""Common code for all install types."""
144
145			@staticmethod
146			def enable_core_napps():
147			"""Enable a NAPP by creating a symlink."""
148			(ENABLED_PATH / NAPP_USERNAME).mkdir(parents=True, exist_ok=True)
149			for napp in CORE_NAPPS:
150			napp_path = Path('kytos', napp)
151			src = ENABLED_PATH / napp_path
152			dst = INSTALLED_PATH / napp_path
153			symlink_if_different(src, dst)
154
155			def __str__(self):
156			return self.__class__.__name__
157
158
159			class InstallMode(install):
160			"""Create files in var/lib/kytos."""
161
162			description = 'To install NApps, use kytos-utils. Devs, see "develop".'
163
164			def run(self):
165			"""Direct users to use kytos-utils to install NApps."""
166			print(self.description)
167
168
169			class EggInfo(egg_info):
170			"""Prepare files to be packed."""
171
172			def run(self):
173			"""Build css."""
174			self._install_deps_wheels()
175			super().run()
176
177			@staticmethod
178			def _install_deps_wheels():
179			"""Python wheels are much faster (no compiling)."""
180			print("Installing dependencies...")
181			check_call(
182			[
183			sys.executable,
184			"-m",
185			"pip",
186			"install",
187			"-r",
188			"requirements/run.txt",
189			]
190			)
191
192
193			class DevelopMode(develop):
194			"""Recommended setup for kytos-napps developers.
195
196			Instead of copying the files to the expected directories, a symlink is
197			created on the system aiming the current source code.
198			"""
199
200			description = 'Install NApps in development mode'
201
202			def run(self):
203			"""Install the package in a developer mode."""
204			super().run()
205			if self.uninstall:
206			shutil.rmtree(str(ENABLED_PATH), ignore_errors=True)
207			else:
208			self._create_folder_symlinks()
209			# self._create_file_symlinks()
210			KytosInstall.enable_core_napps()
211
212			@staticmethod
213			def _create_folder_symlinks():
214			"""Symlink to all Kytos NApps folders.
215
216			./napps/kytos/napp_name will generate a link in
217			var/lib/kytos/napps/.installed/kytos/napp_name.
218			"""
219			links = INSTALLED_PATH / NAPP_USERNAME
220			links.mkdir(parents=True, exist_ok=True)
221			code = CURRENT_DIR
222			src = links / NAPP_NAME
223			symlink_if_different(src, code)
224
225			(ENABLED_PATH / NAPP_USERNAME).mkdir(parents=True, exist_ok=True)
226			dst = ENABLED_PATH / Path(NAPP_USERNAME, NAPP_NAME)
227			symlink_if_different(dst, src)
228
229			@staticmethod
230			def _create_file_symlinks():
231			"""Symlink to required files."""
232			src = ENABLED_PATH / '__init__.py'
233			dst = CURRENT_DIR / '__init__.py'
234			symlink_if_different(src, dst)
235
236
237			def symlink_if_different(path, target):
238			"""Force symlink creation if it points anywhere else."""
239			# print(f"symlinking {path} to target: {target}...", end=" ")
240			if not path.exists():
241			# print(f"path doesn't exist. linking...")
242			path.symlink_to(target)
243			elif not path.samefile(target):
244			# print(f"path exists, but is different. removing and linking...")
245			# Exists but points to a different file, so let's replace it
246			path.unlink()
247			path.symlink_to(target)
248
249
250			def read_version_from_json():
251			"""Read the NApp version from NApp kytos.json file."""
252			file = Path('kytos.json')
253			metadata = json.loads(file.read_text(encoding="utf8"))
254			return metadata['version']
255
256
257			def read_requirements(path="requirements/run.txt"):
258			"""Read requirements file and return a list."""
259			with open(path, "r", encoding="utf8") as file:
260			return [
261			line.strip()
262			for line in file.readlines()
263			if not line.startswith("#")
264			]
265
266
267			setup(name=f'{NAPP_USERNAME}_{NAPP_NAME}',
268			version=read_version_from_json(),
269			description='Store flow information and show statistics about them.',
270			url='http://github.com/kytos-ng/flow_stats',
271			author='FIU/AmLight team',
272			author_email='[email protected]',
273			license='MIT',
274			install_requires=read_requirements() + ["setuptools >= 59.6.0"],
275			packages=[],
276			extras_require={
277			'dev': [
278			'pytest==7.0.0',
279			'pytest-cov==3.0.0',
280			'pip-tools',
281			'yala',
282			'tox',
283			],
284			},
285			cmdclass={
286			'clean': Cleaner,
287			'coverage': TestCoverage,
288			'develop': DevelopMode,
289			'install': InstallMode,
290			'lint': Linter,
291			'egg_info': EggInfo,
292			'test': Test,
293			},
294			zip_safe=False,
295			classifiers=[
296			'License :: OSI Approved :: MIT License',
297			'Operating System :: POSIX :: Linux',
298			'Programming Language :: Python :: 3.9',
299			'Topic :: System :: Networking',
300			])
301

kytos-ng / flow_stats

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build.setup.read_version_from_json() A

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