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How to use _install_from_egg method in autotest

Best Python code snippet using autotest_python

external_packages.py

Source:external_packages.py

...145        """For use as a _build_and_install_current_dir implementation."""146        egg_path = self._build_egg_using_setup_py(setup_py='setup.py')147        if not egg_path:148            return False149        return self._install_from_egg(install_dir, egg_path)150    def _build_and_install_current_dir_setupegg_py(self, install_dir):151        """For use as a _build_and_install_current_dir implementation."""152        egg_path = self._build_egg_using_setup_py(setup_py='setupegg.py')153        if not egg_path:154            return False155        return self._install_from_egg(install_dir, egg_path)156    def _build_and_install_current_dir_noegg(self, install_dir):157        if not self._build_using_setup_py():158            return False159        return self._install_using_setup_py_and_rsync(install_dir)160    def _build_and_install_from_package(self, install_dir):161        """162        This method may be used as a _build_and_install() implementation163        for subclasses if they implement _build_and_install_current_dir().164        Extracts the .tar.gz file, chdirs into the extracted directory165        (which is assumed to match the tar filename) and calls166        _build_and_isntall_current_dir from there.167        Afterwards the build (regardless of failure) extracted .tar.gz168        directory is cleaned up.169        :return: True on success, False otherwise.170        :raise OSError If the expected extraction directory does not exist.171        """172        self._extract_compressed_package()173        if self.verified_package.endswith('.tar.gz'):174            extension = '.tar.gz'175        elif self.verified_package.endswith('.tar.bz2'):176            extension = '.tar.bz2'177        elif self.verified_package.endswith('.zip'):178            extension = '.zip'179        else:180            raise Error('Unexpected package file extension on %s' %181                        self.verified_package)182        os.chdir(os.path.dirname(self.verified_package))183        os.chdir(self.local_filename[:-len(extension)])184        extracted_dir = os.getcwd()185        try:186            return self._build_and_install_current_dir(install_dir)187        finally:188            os.chdir(os.path.join(extracted_dir, '..'))189            shutil.rmtree(extracted_dir)190    def _extract_compressed_package(self):191        """Extract the fetched compressed .tar or .zip within its directory."""192        if not self.verified_package:193            raise Error('Package must have been fetched first.')194        os.chdir(os.path.dirname(self.verified_package))195        if self.verified_package.endswith('gz'):196            status = system("tar -xzf '%s'" % self.verified_package)197        elif self.verified_package.endswith('bz2'):198            status = system("tar -xjf '%s'" % self.verified_package)199        elif self.verified_package.endswith('zip'):200            status = system("unzip '%s'" % self.verified_package)201        else:202            raise Error('Unknown compression suffix on %s.' %203                        self.verified_package)204        if status:205            raise Error('tar failed with %s' % (status,))206    def _build_using_setup_py(self, setup_py='setup.py'):207        """208        Assuming the cwd is the extracted python package, execute a simple209        python setup.py build.210        :param setup_py - The name of the setup.py file to execute.211        :return: True on success, False otherwise.212        """213        if not os.path.exists(setup_py):214            raise Error('%s does not exist in %s' % (setup_py, os.getcwd()))215        status = system("'%s' %s build" % (sys.executable, setup_py))216        if status:217            logging.error('%s build failed.' % self.name)218            return False219        return True220    def _build_egg_using_setup_py(self, setup_py='setup.py'):221        """222        Assuming the cwd is the extracted python package, execute a simple223        python setup.py bdist_egg.224        :param setup_py - The name of the setup.py file to execute.225        :return: The relative path to the resulting egg file or '' on failure.226        """227        if not os.path.exists(setup_py):228            raise Error('%s does not exist in %s' % (setup_py, os.getcwd()))229        egg_subdir = 'dist'230        if os.path.isdir(egg_subdir):231            shutil.rmtree(egg_subdir)232        status = system("'%s' %s bdist_egg" % (sys.executable, setup_py))233        if status:234            logging.error('bdist_egg of setuptools failed.')235            return ''236        # I've never seen a bdist_egg lay multiple .egg files.237        for filename in os.listdir(egg_subdir):238            if filename.endswith('.egg'):239                return os.path.join(egg_subdir, filename)240    def _install_from_egg(self, install_dir, egg_path):241        """242        Install a module from an egg file by unzipping the necessary parts243        into install_dir.244        :param install_dir - The installation directory.245        :param egg_path - The pathname of the egg file.246        """247        status = system("unzip -q -o -d '%s' '%s'" % (install_dir, egg_path))248        if status:249            logging.error('unzip of %s failed', egg_path)250            return False251        egg_info = os.path.join(install_dir, 'EGG-INFO')252        if os.path.isdir(egg_info):253            shutil.rmtree(egg_info)254        return True...

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