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How to use _build_and_install_current_dir method in autotest

Best Python code snippet using autotest_python
external_packages.py
Source:external_packages.py
...158            return ''159    def _build_and_install(self, install_dir):160        """Subclasses MUST provide their own implementation."""161        raise NotImplementedError162    def _build_and_install_current_dir(self, install_dir):163        """164        Subclasses that use _build_and_install_from_package() MUST provide165        their own implementation of this method.166        """167        raise NotImplementedError168    def build_and_install(self, install_dir):169        """170        Builds and installs the package.  It must have been fetched already.171        @param install_dir - The package installation directory.  If it does172            not exist it will be created.173        """174        if not self.verified_package:175            raise Error('Must call fetch() first.  - %s' % self.name)176        self._check_os_requirements()177        return self._build_and_install(install_dir)178    def _check_os_requirements(self):179        if not self.os_requirements:180            return181        failed = False182        for file_names, package_name in self.os_requirements.iteritems():183            if not any(os.path.exists(file_name) for file_name in file_names):184                failed = True185                logging.error('Can\'t find %s, %s probably needs it.',186                              ' or '.join(file_names), self.name)187                logging.error('Perhaps you need to install something similar '188                              'to the %s package for OS first.', package_name)189        if failed:190            raise Error('Missing OS requirements for %s.  (see above)' %191                        self.name)192    def _build_and_install_current_dir_setup_py(self, install_dir):193        """For use as a _build_and_install_current_dir implementation."""194        egg_path = self._build_egg_using_setup_py(setup_py='setup.py')195        if not egg_path:196            return False197        return self._install_from_egg(install_dir, egg_path)198    def _build_and_install_current_dir_setupegg_py(self, install_dir):199        """For use as a _build_and_install_current_dir implementation."""200        egg_path = self._build_egg_using_setup_py(setup_py='setupegg.py')201        if not egg_path:202            return False203        return self._install_from_egg(install_dir, egg_path)204    def _build_and_install_current_dir_noegg(self, install_dir):205        if not self._build_using_setup_py():206            return False207        return self._install_using_setup_py_and_rsync(install_dir)208    def _get_extension(self, package):209        """Get extension of package."""210        valid_package_extensions = ['.tar.gz', '.tar.bz2', '.zip']211        extension = None212        for ext in valid_package_extensions:213            if package.endswith(ext):214                extension = ext215                break216        if not extension:217            raise Error('Unexpected package file extension on %s' % package)218        return extension219    def _build_and_install_from_package(self, install_dir):220        """221        This method may be used as a _build_and_install() implementation222        for subclasses if they implement _build_and_install_current_dir().223        Extracts the .tar.gz file, chdirs into the extracted directory224        (which is assumed to match the tar filename) and calls225        _build_and_isntall_current_dir from there.226        Afterwards the build (regardless of failure) extracted .tar.gz227        directory is cleaned up.228        @returns True on success, False otherwise.229        @raises OSError If the expected extraction directory does not exist.230        """231        self._extract_compressed_package()232        extension = self._get_extension(self.verified_package)233        os.chdir(os.path.dirname(self.verified_package))234        os.chdir(self.extracted_package_path)235        extracted_dir = os.getcwd()236        try:237            return self._build_and_install_current_dir(install_dir)238        finally:239            os.chdir(os.path.join(extracted_dir, '..'))240            shutil.rmtree(extracted_dir)241    def _extract_compressed_package(self):242        """Extract the fetched compressed .tar or .zip within its directory."""243        if not self.verified_package:244            raise Error('Package must have been fetched first.')245        os.chdir(os.path.dirname(self.verified_package))246        if self.verified_package.endswith('gz'):247            status = system("tar -xzf '%s'" % self.verified_package)248        elif self.verified_package.endswith('bz2'):249            status = system("tar -xjf '%s'" % self.verified_package)250        elif self.verified_package.endswith('zip'):251            status = system("unzip '%s'" % self.verified_package)252        else:253            raise Error('Unknown compression suffix on %s.' %254                        self.verified_package)255        if status:256            raise Error('tar failed with %s' % (status,))257    def _build_using_setup_py(self, setup_py='setup.py'):258        """259        Assuming the cwd is the extracted python package, execute a simple260        python setup.py build.261        @param setup_py - The name of the setup.py file to execute.262        @returns True on success, False otherwise.263        """264        if not os.path.exists(setup_py):265            raise Error('%s does not exist in %s' % (setup_py, os.getcwd()))266        status = system("'%s' %s build" % (sys.executable, setup_py))267        if status:268            logging.error('%s build failed.', self.name)269            return False270        return True271    def _build_egg_using_setup_py(self, setup_py='setup.py'):272        """273        Assuming the cwd is the extracted python package, execute a simple274        python setup.py bdist_egg.275        @param setup_py - The name of the setup.py file to execute.276        @returns The relative path to the resulting egg file or '' on failure.277        """278        if not os.path.exists(setup_py):279            raise Error('%s does not exist in %s' % (setup_py, os.getcwd()))280        egg_subdir = 'dist'281        if os.path.isdir(egg_subdir):282            shutil.rmtree(egg_subdir)283        status = system("'%s' %s bdist_egg" % (sys.executable, setup_py))284        if status:285            logging.error('bdist_egg of setuptools failed.')286            return ''287        # I've never seen a bdist_egg lay multiple .egg files.288        for filename in os.listdir(egg_subdir):289            if filename.endswith('.egg'):290                return os.path.join(egg_subdir, filename)291    def _install_from_egg(self, install_dir, egg_path):292        """293        Install a module from an egg file by unzipping the necessary parts294        into install_dir.295        @param install_dir - The installation directory.296        @param egg_path - The pathname of the egg file.297        """298        status = system("unzip -q -o -d '%s' '%s'" % (install_dir, egg_path))299        if status:300            logging.error('unzip of %s failed', egg_path)301            return False302        egg_info_dir = os.path.join(install_dir, 'EGG-INFO')303        if os.path.isdir(egg_info_dir):304            egg_info_new_path = self._get_egg_info_path(install_dir)305            if egg_info_new_path:306                if os.path.exists(egg_info_new_path):307                    shutil.rmtree(egg_info_new_path)308                os.rename(egg_info_dir, egg_info_new_path)309            else:310                shutil.rmtree(egg_info_dir)311        return True312    def _get_egg_info_path(self, install_dir):313        """Get egg-info path for this package.314        Example path: install_dir/MySQL_python-1.2.3.egg-info315        """316        if self.dist_name:317            egg_info_name_part = self.dist_name.replace('-', '_')318            if self.version:319                egg_info_filename = '%s-%s.egg-info' % (egg_info_name_part,320                                                        self.version)321            else:322                egg_info_filename = '%s.egg-info' % (egg_info_name_part,)323            return os.path.join(install_dir, egg_info_filename)324        else:325            return None326    def _get_temp_dir(self):327        return tempfile.mkdtemp(dir='/var/tmp')328    def _site_packages_path(self, temp_dir):329        # This makes assumptions about what python setup.py install330        # does when given a prefix.  Is this always correct?331        python_xy = 'python%s' % sys.version[:3]332        return os.path.join(temp_dir, 'lib', python_xy, 'site-packages')333    def _rsync (self, temp_site_dir, install_dir):334        """Rsync contents. """335        status = system("rsync -r '%s/' '%s/'" %336                        (os.path.normpath(temp_site_dir),337                         os.path.normpath(install_dir)))338        if status:339            logging.error('%s rsync to install_dir failed.', self.name)340            return False341        return True342    def _install_using_setup_py_and_rsync(self, install_dir,343                                          setup_py='setup.py',344                                          temp_dir=None):345        """346        Assuming the cwd is the extracted python package, execute a simple:347          python setup.py install --prefix=BLA348        BLA will be a temporary directory that everything installed will349        be picked out of and rsynced to the appropriate place under350        install_dir afterwards.351        Afterwards, it deconstructs the extra lib/pythonX.Y/site-packages/352        directory tree that setuptools created and moves all installed353        site-packages directly up into install_dir itself.354        @param install_dir the directory for the install to happen under.355        @param setup_py - The name of the setup.py file to execute.356        @returns True on success, False otherwise.357        """358        if not os.path.exists(setup_py):359            raise Error('%s does not exist in %s' % (setup_py, os.getcwd()))360        if temp_dir is None:361            temp_dir = self._get_temp_dir()362        try:363            status = system("'%s' %s install --no-compile --prefix='%s'"364                            % (sys.executable, setup_py, temp_dir))365            if status:366                logging.error('%s install failed.', self.name)367                return False368            if os.path.isdir(os.path.join(temp_dir, 'lib')):369                # NOTE: This ignores anything outside of the lib/ dir that370                # was installed.371                temp_site_dir = self._site_packages_path(temp_dir)372            else:373                temp_site_dir = temp_dir374            return self._rsync(temp_site_dir, install_dir)375        finally:376            shutil.rmtree(temp_dir)377    def _build_using_make(self, install_dir):378        """Build the current package using configure/make.379        @returns True on success, False otherwise.380        """381        install_prefix = os.path.join(install_dir, 'usr', 'local')382        status = system('./configure --prefix=%s' % install_prefix)383        if status:384            logging.error('./configure failed for %s', self.name)385            return False386        status = system('make')387        if status:388            logging.error('make failed for %s', self.name)389            return False390        status = system('make check')391        if status:392            logging.error('make check failed for %s', self.name)393            return False394        return True395    def _install_using_make(self):396        """Install the current package using make install.397        Assumes the install path was set up while running ./configure (in398        _build_using_make()).399        @returns True on success, False otherwise.400        """401        status = system('make install')402        return status == 0403    def fetch(self, dest_dir):404        """405        Fetch the package from one its URLs and save it in dest_dir.406        If the the package already exists in dest_dir and the checksum407        matches this code will not fetch it again.408        Sets the 'verified_package' attribute with the destination pathname.409        @param dest_dir - The destination directory to save the local file.410            If it does not exist it will be created.411        @returns A boolean indicating if we the package is now in dest_dir.412        @raises FetchError - When something unexpected happens.413        """414        if not os.path.exists(dest_dir):415            os.makedirs(dest_dir)416        local_path = os.path.join(dest_dir, self.local_filename)417        # If the package exists, verify its checksum and be happy if it is good.418        if os.path.exists(local_path):419            actual_hex_sum = _checksum_file(local_path)420            if self.hex_sum == actual_hex_sum:421                logging.info('Good checksum for existing %s package.',422                             self.name)423                self.verified_package = local_path424                return True425            logging.warning('Bad checksum for existing %s package.  '426                            'Re-downloading', self.name)427            os.rename(local_path, local_path + '.wrong-checksum')428        # Download the package from one of its urls, rejecting any if the429        # checksum does not match.430        for url in self.urls:431            logging.info('Fetching %s', url)432            try:433                url_file = urllib2.urlopen(url)434            except (urllib2.URLError, EnvironmentError):435                logging.warning('Could not fetch %s package from %s.',436                                self.name, url)437                continue438            data_length = int(url_file.info().get('Content-Length',439                                                  _MAX_PACKAGE_SIZE))440            if data_length <= 0 or data_length > _MAX_PACKAGE_SIZE:441                raise FetchError('%s from %s fails Content-Length %d '442                                 'sanity check.' % (self.name, url,443                                                    data_length))444            checksum = utils.hash('sha1')445            total_read = 0446            output = open(local_path, 'wb')447            try:448                while total_read < data_length:449                    data = url_file.read(_READ_SIZE)450                    if not data:451                        break452                    output.write(data)453                    checksum.update(data)454                    total_read += len(data)455            finally:456                output.close()457            if self.hex_sum != checksum.hexdigest():458                logging.warning('Bad checksum for %s fetched from %s.',459                                self.name, url)460                logging.warning('Got %s', checksum.hexdigest())461                logging.warning('Expected %s', self.hex_sum)462                os.unlink(local_path)463                continue464            logging.info('Good checksum.')465            self.verified_package = local_path466            return True467        else:468            return False469# NOTE: This class definition must come -before- all other ExternalPackage470# classes that need to use this version of setuptools so that is is inserted471# into the ExternalPackage.subclasses list before them.472class SetuptoolsPackage(ExternalPackage):473    """setuptools package"""474    # For all known setuptools releases a string compare works for the475    # version string.  Hopefully they never release a 0.10.  (Their own476    # version comparison code would break if they did.)477    # Any system with setuptools > 18.0.1 is fine. If none installed, then478    # try to install the latest found on the upstream.479    minimum_version = '18.0.1'480    version = '18.0.1'481    urls = (_CHROMEOS_MIRROR + 'setuptools-%s.tar.gz' % (version,),)482    local_filename = 'setuptools-%s.tar.gz' % version483    hex_sum = 'ebc4fe81b7f6d61d923d9519f589903824044f52'484    SUDO_SLEEP_DELAY = 15485    def _build_and_install(self, install_dir):486        """Install setuptools on the system."""487        logging.info('NOTE: setuptools install does not use install_dir.')488        return self._build_and_install_from_package(install_dir)489    def _build_and_install_current_dir(self, install_dir):490        egg_path = self._build_egg_using_setup_py()491        if not egg_path:492            return False493        print '!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n'494        print 'About to run sudo to install setuptools', self.version495        print 'on your system for use by', sys.executable, '\n'496        print '!! ^C within', self.SUDO_SLEEP_DELAY, 'seconds to abort.\n'497        time.sleep(self.SUDO_SLEEP_DELAY)498        # Copy the egg to the local filesystem /var/tmp so that root can499        # access it properly (avoid NFS squashroot issues).500        temp_dir = self._get_temp_dir()501        try:502            shutil.copy(egg_path, temp_dir)503            egg_name = os.path.split(egg_path)[1]...
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