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How to use _feed_html_parser method in avocado

Best Python code snippet using avocado_python

vmimage.py

Source:vmimage.py

...87            self._file_name = self.image_pattern.format(version=self.version,88                                                        build=self.build,89                                                        arch=self.arch)90        return self._file_name91    def _feed_html_parser(self, url, parser):92        try:93            data = urlopen(url).read()94            parser.feed(astring.to_text(data, self.HTML_ENCODING))95        except HTTPError:96            raise ImageProviderError('Cannot open %s' % self.url_versions)97    @staticmethod98    def get_best_version(versions):99        return max(versions)100    def get_versions(self):101        """Return all available versions for the current parameters."""102        parser = VMImageHtmlParser(self.version_pattern)103        self._feed_html_parser(self.url_versions, parser)104        resulting_versions = []105        if parser.items:106            for version in parser.items:107                # Trying to convert version to int or float so max()108                # can compare numerical values.109                try:110                    # Can it be converted to integer?111                    resulting_versions.append(int(version))112                except ValueError:113                    try:114                        # Can it be converted to float?115                        resulting_versions.append(float(version))116                    except ValueError:117                        # So it's just a string118                        resulting_versions.append(version)119        return resulting_versions120    def get_version(self):121        """Probes the higher version available for the current parameters."""122        resulting_versions = self.get_versions()123        if resulting_versions:124            self._best_version = self.get_best_version(resulting_versions)125            return self._best_version126        else:127            raise ImageProviderError('Version not available at %s' %128                                     self.url_versions)129    def get_image_url(self):130        """131        Probes the higher image available for the current parameters.132        """133        if not self.url_images or not self.image_pattern:134            raise ImageProviderError(135                "url_images and image_pattern attributes are required to get image url")136        url_images = self.url_images.format(version=self.version,137                                            build=self.build,138                                            arch=self.arch)139        image = self.image_pattern.format(version=self.version,140                                          build=self.build,141                                          arch=self.arch)142        parser = VMImageHtmlParser(image)143        self._feed_html_parser(url_images, parser)144        if parser.items:145            return url_images + max(parser.items)146        else:147            raise ImageProviderError("No images matching '%s' at '%s'. "148                                     "Wrong arch?" % (image, url_images))149    def get_image_parameters(self, image_file_name):150        """151        Computation of image parameters from image_pattern152        :param image_file_name: pattern with parameters153        :type image_file_name: str154        :return: dict with parameters155        :rtype: dict or None156        """157        keywords = re.split(r'\{(.*?)\}', self.image_pattern)[1::2]158        matches = re.match(self.file_name, image_file_name)159        if not matches:160            return None161        return {x: matches.group(x) for x in keywords}162class FedoraImageProviderBase(ImageProviderBase):163    """164    Base Fedora Image Provider165    """166    HTML_ENCODING = 'iso-8859-1'167    url_old_images = None168    def get_image_url(self):169        if int(self.version) >= 28:170            cloud = 'Cloud'171        else:172            cloud = 'CloudImages'173        if self.url_old_images and int(self.version) <= 31:174            self.url_versions = self.url_old_images175        self.url_images = self.url_versions + '{version}/' \176            + cloud + '/{arch}/images/'177        return super().get_image_url()178class FedoraImageProvider(FedoraImageProviderBase):179    """180    Fedora Image Provider181    """182    name = 'Fedora'183    def __init__(self, version='[0-9]+', build='[0-9]+.[0-9]+',184                 arch=DEFAULT_ARCH):185        super().__init__(version, build, arch)186        self.url_versions = 'https://dl.fedoraproject.org/pub/fedora/linux/releases/'187        self.url_old_images = 'https://archives.fedoraproject.org/pub/archive/fedora/linux/releases/'188        self.image_pattern = 'Fedora-Cloud-Base-(?P<version>{version})-(?P<build>{build}).(?P<arch>{arch}).qcow2$'189class FedoraSecondaryImageProvider(FedoraImageProviderBase):190    """191    Fedora Secondary Image Provider192    """193    name = 'FedoraSecondary'194    def __init__(self, version='[0-9]+', build='[0-9]+.[0-9]+',195                 arch=DEFAULT_ARCH):196        super().__init__(version, build, arch)197        self.url_versions = 'https://dl.fedoraproject.org/pub/fedora-secondary/releases/'198        self.url_old_images = 'https://archives.fedoraproject.org/pub/archive/fedora-secondary/releases/'199        self.image_pattern = 'Fedora-Cloud-Base-(?P<version>{version})-(?P<build>{build}).(?P<arch>{arch}).qcow2$'200class CentOSImageProvider(ImageProviderBase):201    """202    CentOS Image Provider203    """204    name = 'CentOS'205    def __init__(self, version='[0-9]+', build='[0-9]{4}', arch=DEFAULT_ARCH):206        super().__init__(version, build, arch)207        self.url_versions = 'https://cloud.centos.org/centos/'208        self.url_images = self.url_versions + '{version}/images/'209        self.image_pattern = 'CentOS-(?P<version>{version})-(?P<arch>{arch})-GenericCloud-(?P<build>{build}).qcow2.xz$'210    def get_image_url(self):211        if int(self.version) >= 8:212            self.build = r'[\d\.\-]+'213            self.url_images = self.url_versions + '{version}/{arch}/images/'214            self.image_pattern = 'CentOS-(?P<version>{version})-GenericCloud-(?P<build>{build}).(?P<arch>{arch}).qcow2$'215        return super().get_image_url()216class UbuntuImageProvider(ImageProviderBase):217    """218    Ubuntu Image Provider219    """220    name = 'Ubuntu'221    def __init__(self, version='[0-9]+.[0-9]+', build=None,222                 arch=DEFAULT_ARCH):223        # Ubuntu uses 'amd64' instead of 'x86_64'224        if arch == 'x86_64':225            arch = 'amd64'226        # and 'arm64' instead of 'aarch64'227        elif arch == 'aarch64':228            arch = 'arm64'229        super().__init__(version, build, arch)230        self.url_versions = 'http://cloud-images.ubuntu.com/releases/'231        self.url_images = self.url_versions + 'releases/{version}/release/'232        self.image_pattern = 'ubuntu-(?P<version>{version})-server-cloudimg-(?P<arch>{arch}).img'233    def get_best_version(self, versions):234        """ Return best (more recent) version """235        max_float = max([float(item) for item in versions])236        return str(f'{max_float:2.2f}')237    def get_versions(self):238        """Return all available versions for the current parameters."""239        parser = VMImageHtmlParser(self.version_pattern)240        self._feed_html_parser(self.url_versions, parser)241        resulting_versions = []242        if parser.items:243            for version in parser.items:244                max_float = float(version)245                resulting_versions.append(str(f'{max_float:2.2f}'))246        return resulting_versions247class DebianImageProvider(ImageProviderBase):248    """249    Debian Image Provider250    """251    name = 'Debian'252    def __init__(self, version=None, build=r'[\d{8}\-\d{3}]', arch=DEFAULT_ARCH):253        # Debian uses 'amd64' instead of 'x86_64'254        if arch == 'x86_64':255            arch = 'amd64'256        # and 'arm64' instead of 'aarch64'257        elif arch == 'aarch64':258            arch = 'arm64'259        table_version = {260            'buster': '10',261            'bullseye': '11',262        }263        table_codename = {264            '10': 'buster',265            '11': 'bullseye',266        }267        # Default version if none was selected, should work at least until 2023 Q3268        if version is None:269            version = "bullseye"270        # User provided a numerical version271        if version in table_codename.keys():272            version = table_codename[version]273        # If version is not a codename by now, it's wrong or unknown,274        # so let's fail early275        if (version not in table_version.keys()):276            raise ImageProviderError("Unknown version", version)277        super().__init__(version, build, arch)278        self.url_versions = 'https://cloud.debian.org/images/cloud/'279        self.url_images = self.url_versions + version + '/{build}/'280        self.image_pattern = 'debian-'+table_version[version]+'-generic-(?P<arch>{arch})-{build}.qcow2$'281    def get_image_url(self):282        # Find out the build first283        parserbuild = VMImageHtmlParser(self.build)284        self._feed_html_parser(self.url_versions+self._version+"/", parserbuild)285        self.build = max(parserbuild.items)286        return super().get_image_url()287class JeosImageProvider(ImageProviderBase):288    """289    JeOS Image Provider290    """291    name = 'JeOS'292    def __init__(self, version='[0-9]+', build=None,293                 arch=DEFAULT_ARCH):294        # JeOS uses '64' instead of 'x86_64'295        if arch == 'x86_64':296            arch = '64'297        super().__init__(version, build, arch)298        self.url_versions = 'https://avocado-project.org/data/assets/jeos/'...

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