def update_resource_catalogue_cache(orm=None):

    from wirecloud.catalogue.utils import wgt_deployer

    if orm is not None:
        resources = orm.CatalogueResource.objects.all()
    else:
        from wirecloud.catalogue.models import CatalogueResource
        resources = CatalogueResource.objects.all()

    for resource in resources:

        try:

            if resource.fromWGT:
                base_dir = wgt_deployer.get_base_dir(resource.vendor, resource.short_name, resource.version)
                wgt_file = WgtFile(os.path.join(base_dir, resource.template_uri))
                template = wgt_file.get_template()
                wgt_file.close()
            else:
                template = download_http_content(resource.template_uri)

            template_parser = TemplateParser(template)
            resource.json_description = json.dumps(template_parser.get_resource_info())
            resource.save()

        except TemplateParseException as e:

            from django.conf import settings

            if getattr(settings, 'WIRECLOUD_REMOVE_UNSUPPORTED_RESOURCES_MIGRATION', False) is not True:
                raise e

            print('    Removing %s' % (resource.vendor + '/' + resource.short_name + '/' + resource.version))
            resource.delete()

        def wrapper(self, *args, **kwargs):

            if shared:
                base = self.shared_test_data_dir
            else:
                base = self.test_data_dir

            final_creator = User.objects.get(username=creator) if creator is not None else None

            final_users = tuple(User.objects.get(username=user) for user in users)
            final_groups = tuple(Group.objects.get(name=group) for group in groups)

            for resource in resources:
                wgt_file = open(os.path.join(base, resource), 'rb')
                wgt = WgtFile(wgt_file)

                fix_dev_version(wgt, final_creator)
                if deploy_only:
                    catalogue.add_packaged_resource(wgt.get_underlying_file(), final_creator, wgt_file=wgt, deploy_only=True)
                    wgt_file.close()
                    continue

                resource = install_resource(wgt, final_creator)

                if public:
                    resource.public = True
                    resource.save()

                resource.users.add(*final_users)
                resource.groups.add(*final_groups)

                wgt_file.close()

            return test_func(self, *args, **kwargs)

        def wrapper(self, *args, **kwargs):

            owner_user = User.objects.get(username=owner)

            if shared:
                base = self.shared_test_data_dir
            else:
                base = self.test_data_dir

            with open(os.path.join(base, file_name), 'rb') as f:
                wgt = WgtFile(f)
                template = TemplateParser(wgt.get_template())

                resource_info = template.get_resource_processed_info(process_urls=False)
                if resource_info["type"] != 'mashup':
                    raise Exception

                for embedded_resource in resource_info['embedded']:
                    if embedded_resource['src'].startswith('https://'):
                        resource_file = download_http_content(embedded_resource['src'])
                    else:
                        resource_file = BytesIO(wgt.read(embedded_resource['src']))

                    extra_resource_contents = WgtFile(resource_file)
                    install_resource_to_user(owner_user, file_contents=extra_resource_contents)

                buildWorkspaceFromTemplate(template, owner_user)

            return test_func(self, *args, **kwargs)

def install_resource(file_contents, templateURL, executor_user, packaged):

    if packaged:
        if isinstance(file_contents, basestring):
            file_contents = StringIO(file_contents)
            wgt_file = WgtFile(file_contents)
        elif isinstance(file_contents, WgtFile):
            wgt_file = file_contents
            file_contents = wgt_file.get_underlying_file()
        else:
            raise Exception

        template_contents = wgt_file.get_template()
    else:
        template_contents = file_contents

    template = TemplateParser(template_contents)
    resources = CatalogueResource.objects.filter(vendor=template.get_resource_vendor(), short_name=template.get_resource_name(), version=template.get_resource_version())[:1]

    # Create/recover catalogue resource
    if len(resources) == 1:
        resource = resources[0]
    else:
        if packaged:
            resource = add_widget_from_wgt(file_contents, executor_user, wgt_file=wgt_file)
        else:
            resource = add_resource_from_template(templateURL, template_contents, executor_user)

    return resource

def add_widget_from_wgt(file, user, wgt_file=None, template=None, deploy_only=False):

    close_wgt = False
    if wgt_file is None:
        wgt_file = WgtFile(file)
        close_wgt = True

    if template is None:
        template_contents = wgt_file.get_template()
        template = TemplateParser(template_contents)

    resource_id = (
        template.get_resource_vendor(),
        template.get_resource_name(),
        template.get_resource_version(),
    )
    file_name = '_'.join(resource_id) + '.wgt'
    local_dir = wgt_deployer.get_base_dir(*resource_id)
    local_wgt = os.path.join(local_dir, file_name)

    if not os.path.exists(local_dir):
        os.makedirs(local_dir)

    overrides = extract_resource_media_from_package(template, wgt_file, local_dir)
    if close_wgt:
        wgt_file.close()

    f = open(local_wgt, "wb")
    file.seek(0)
    f.write(file.read())
    f.close()

    if not deploy_only:
        return add_resource_from_template(file_name, template, user, fromWGT=True, overrides=overrides)

    def process(self, request, to_ws_id):

        data = parse_json_request(request)

        mashup_id = data.get('mashup', '')
        workspace_id = data.get('workspace', '')

        if mashup_id == '' and workspace_id == '':
            return build_error_response(request, 422, _('Missing workspace or mashup parameter'))
        elif  mashup_id != '' and workspace_id != '':
            return build_error_response(request, 422, _('Workspace and mashup parameters cannot be used at the same time'))

        to_ws = get_object_or_404(Workspace, id=to_ws_id)
        if not request.user.is_superuser and to_ws.creator != request.user:
            return build_error_response(request, 403, _('You are not allowed to update this workspace'))

        if mashup_id != '':
            values = mashup_id.split('/', 3)
            if len(values) != 3:
                return build_error_response(request, 422, _('invalid mashup id'))

            (mashup_vendor, mashup_name, mashup_version) = values
            try:
                resource = CatalogueResource.objects.get(vendor=mashup_vendor, short_name=mashup_name, version=mashup_version)
                if not resource.is_available_for(request.user) or resource.resource_type() != 'mashup':
                    raise CatalogueResource.DoesNotExist
            except CatalogueResource.DoesNotExist:
                return build_error_response(request, 422, _('Mashup not found: %(mashup_id)s') % {'mashup_id': mashup_id})

            base_dir = catalogue.wgt_deployer.get_base_dir(mashup_vendor, mashup_name, mashup_version)
            wgt_file = WgtFile(os.path.join(base_dir, resource.template_uri))
            template = TemplateParser(wgt_file.get_template())

        else:

            from_ws = get_object_or_404(Workspace, id=workspace_id)
            if not request.user.is_superuser and from_ws.creator != request.user:
                return build_error_response(request, 403, _('You are not allowed to read from workspace %s') % workspace_id)

            options = {
                'vendor': 'api',
                'name': 'merge_op',
                'version': '1.0',
                'title': '',
                'description': 'Temporal mashup for merging operation',
                'email': '[email protected]',
            }

            template = TemplateParser(build_json_template_from_workspace(options, from_ws, from_ws.creator))

        try:
            check_mashup_dependencies(template, request.user)
        except MissingDependencies as e:
            details = {
                'missingDependencies': e.missing_dependencies,
            }
            return build_error_response(request, 422, e, details=details)

        fillWorkspaceUsingTemplate(to_ws, template)
        return HttpResponse(status=204)

def _parse_ac_request(request):

    fileURL = None
    file_contents = None
    content_type = get_content_type(request)[0]

    try:
        data = json.loads(request.body)
    except Exception as e:
        msg = _("malformed json data: %s") % unicode(e)
        return build_error_response(request, 400, msg)

    if 'url' not in data:
        return build_error_response(request, 400, _('Missing widget URL'))

    fileURL = data.get('url')
    id_4CaaSt = data.get('4CaaStID')

    if id_4CaaSt is None:
        return build_error_response(request, 400, _('Missing 4CaaStID'))

    if not isinstance(id_4CaaSt, string_types) or id_4CaaSt.strip() == '':
        return build_error_response(request, 400, _('Invalid 4CaaStID'))

    try:
        downloaded_file = download_http_content(fileURL)
    except:
        return build_error_response(request, 409, _('Mashable application component could not be downloaded'))

    downloaded_file = StringIO(downloaded_file)
    file_contents = WgtFile(downloaded_file)

    # Create a custom version of the resource
    template = TemplateParser(file_contents.get_template())
    template_info = template.get_resource_info()
    template_info['name'] += '@' + id_4CaaSt

    for pref_name, pref_value in six.iteritems(data.get('preferences', {})):
        for widget_pref_index, widget_pref in enumerate(template_info['preferences']):
            if widget_pref['name'] == pref_name:
                template_info['preferences'][widget_pref_index]['readonly'] = True
                template_info['preferences'][widget_pref_index]['value'] = pref_value
                break

    # Write a new Wgt file
    new_file = StringIO()
    zin = zipfile.ZipFile(downloaded_file, 'r')
    zout = zipfile.ZipFile(new_file, 'w')
    zout.writestr('config.xml', write_rdf_description(template_info))
    for item in zin.infolist():
        if item.filename == 'config.xml':
            continue
        zout.writestr(item, zin.read(item.filename))
    zin.close()
    zout.close()

    file_contents = WgtFile(new_file)

    return id_4CaaSt, file_contents, fileURL

    def _handle(self, *args, **options):
        if len(args) < 1:
            raise CommandError(_('Wrong number of arguments'))

        self.verbosity = int(options.get('verbosity', 1))

        users = []
        groups = []
        redeploy = options['redeploy']
        public = options['public']
        users_string = options['users'].strip()
        groups_string = options['groups'].strip()

        if redeploy is False and public is False and users_string == '' and groups_string == '':
            raise CommandError(_('You must use at least one of the following flags: --redeploy, --users, --groups or --public '))

        if not options['redeploy']:

            if users_string != '':
                for username in users_string.split(','):
                    users.append(User.objects.get(username=username))

            if groups_string != '':
                for groupname in groups_string.split(','):
                    groups.append(Group.objects.get(name=groupname))

        for file_name in args:
            try:
                f = open(file_name, 'rb')
                wgt_file = WgtFile(f)
            except:
                self.log(_('Failed to read from %(file_name)s') % {'file_name': file_name}, level=1)
                continue

            try:
                template_contents = wgt_file.get_template()
                template = TemplateParser(template_contents)
                if options['redeploy']:
                    add_packaged_resource(f, None, wgt_file=wgt_file, template=template, deploy_only=True)
                else:
                    for user in users:
                        install_resource_to_user(user, file_contents=wgt_file)

                    for group in groups:
                        install_resource_to_group(group, file_contents=wgt_file)

                    if public:
                        install_resource_to_all_users(file_contents=wgt_file)

                wgt_file.close()
                f.close()
                self.log(_('Successfully imported \"%(name)s\" from \"%(file_name)s\"') % {'name': template.get_resource_processed_info()['title'], 'file_name': file_name}, level=1)
            except:
                self.log(_('Failed to import the mashable application component from %(file_name)s') % {'file_name': file_name}, level=1)

def add_packaged_resource(file, user, wgt_file=None, template=None, deploy_only=False):

    close_wgt = False
    if wgt_file is None:
        wgt_file = WgtFile(file)
        close_wgt = True

    if template is None:
        template_contents = wgt_file.get_template()
        template = TemplateParser(template_contents)

    resource_info = template.get_resource_info()

    resource_id = (
        resource_info['vendor'],
        resource_info['name'],
        resource_info['version'],
    )
    file_name = '_'.join(resource_id) + '.wgt'

    check_packaged_resource(wgt_file, resource_info)

    local_dir = wgt_deployer.get_base_dir(*resource_id)
    local_wgt = os.path.join(local_dir, file_name)

    if not os.path.exists(local_dir):
        os.makedirs(local_dir)

    overrides = extract_resource_media_from_package(template, wgt_file, local_dir)
    if close_wgt:
        wgt_file.close()

    f = open(local_wgt, "wb")
    file.seek(0)
    f.write(file.read())
    f.close()

    if not deploy_only:
        resource_info.update(overrides)

        resource = CatalogueResource.objects.create(
            short_name=resource_info['name'],
            vendor=resource_info['vendor'],
            version=resource_info['version'],
            type=CatalogueResource.RESOURCE_TYPES.index(resource_info['type']),
            creator=user,
            template_uri=file_name,
            creation_date=now(),
            popularity='0.0',
            json_description=json.dumps(resource_info)
        )

        return resource

def create_workspace(owner, f=None, mashup=None, new_name=None, new_title=None, preferences={}, searchable=True, public=False):

    from wirecloud.platform.workspace.mashupTemplateParser import buildWorkspaceFromTemplate

    if mashup is not None and f is not None:
        raise Exception

    if f is not None:

        wgt = f if isinstance(f, WgtFile) else WgtFile(f)
        template = TemplateParser(wgt.get_template())

        resource_info = template.get_resource_processed_info(process_urls=False)
        if resource_info["type"] != 'mashup':
            raise Exception

        for embedded_resource in resource_info['embedded']:
            if embedded_resource['src'].startswith('https://'):
                resource_file = download_http_content(embedded_resource['src'])
            else:
                resource_file = BytesIO(wgt.read(embedded_resource['src']))

            extra_resource_contents = WgtFile(resource_file)
            install_resource_to_user(owner, file_contents=extra_resource_contents)
    else:
        values = mashup.split('/', 3)
        if len(values) != 3:
            raise TypeError(_('invalid mashup id'))

        (mashup_vendor, mashup_name, mashup_version) = values
        try:
            resource = CatalogueResource.objects.get(vendor=mashup_vendor, short_name=mashup_name, version=mashup_version)
            if not resource.is_available_for(owner) or resource.resource_type() != 'mashup':
                raise CatalogueResource.DoesNotExist
        except CatalogueResource.DoesNotExist:
            raise Exception(_('Mashup not found: %(mashup)s') % {'mashup': mashup})

        base_dir = catalogue.wgt_deployer.get_base_dir(mashup_vendor, mashup_name, mashup_version)
        wgt_file = WgtFile(os.path.join(base_dir, resource.template_uri))
        template = TemplateParser(wgt_file.get_template())

    workspace, _foo = buildWorkspaceFromTemplate(template, owner, new_name=new_name, new_title=new_title, searchable=searchable, public=public)

    if len(preferences) > 0:
        update_workspace_preferences(workspace, preferences, invalidate_cache=False)

    return workspace

        def wrapper(self, *args, **kwargs):

            owner_user = User.objects.get(username=owner)

            if shared:
                base = self.shared_test_data_dir
            else:
                base = self.test_data_dir

            wgt_file = open(os.path.join(base, file_name), "rb")
            wgt = WgtFile(wgt_file)
            template = wgt.get_template()
            buildWorkspaceFromTemplate(template, owner_user)

            wgt_file.close()

            return test_func(self, *args, **kwargs)

def add_widget_from_wgt(file, user, wgt_file=None, template=None, deploy_only=False):

    close_wgt = False
    if wgt_file is None:
        wgt_file = WgtFile(file)
        close_wgt = True

    if template is None:
        template_contents = wgt_file.get_template()
        template = TemplateParser(template_contents)

    if template.get_resource_type() == 'widget':
        resource_info = template.get_resource_info()
        code_url = resource_info['code_url']
        if not code_url.startswith(('http://', 'https://')):
            code = wgt_file.read(code_url)
            try:
                unicode(code, resource_info['code_charset'])
            except UnicodeDecodeError:
                msg = _('%(file_name)s was not encoded using the specified charset (%(charset)s according to the widget descriptor file).')
                raise InvalidContents(msg % {'file_name': code_url, 'charset': resource_info['code_charset']})

    resource_id = (
        template.get_resource_vendor(),
        template.get_resource_name(),
        template.get_resource_version(),
    )
    file_name = '_'.join(resource_id) + '.wgt'
    local_dir = wgt_deployer.get_base_dir(*resource_id)
    local_wgt = os.path.join(local_dir, file_name)

    if not os.path.exists(local_dir):
        os.makedirs(local_dir)

    overrides = extract_resource_media_from_package(template, wgt_file, local_dir)
    if close_wgt:
        wgt_file.close()

    f = open(local_wgt, "wb")
    file.seek(0)
    f.write(file.read())
    f.close()

    if not deploy_only:
        return add_resource_from_template(file_name, template, user, fromWGT=True, overrides=overrides)

def update_resource_catalogue_cache(orm=None):

    if orm is not None:
        resources = orm.CatalogueResource.objects.all()
    else:
        resources = CatalogueResource.objects.all()

    resources_to_remove = []
    for resource in resources:

        try:

            if getattr(resource, "fromWGT", True):
                base_dir = wgt_deployer.get_base_dir(resource.vendor, resource.short_name, resource.version)
                wgt_file = WgtFile(os.path.join(base_dir, resource.template_uri))
                template = wgt_file.get_template()
                wgt_file.close()
            else:
                # fromWGT attribute support was removed from Wirecloud in version 0.7.0
                template = download_http_content(resource.template_uri)

            template_parser = TemplateParser(template)
            resource.json_description = json.dumps(template_parser.get_resource_info())
            resource.save()

        except (IOError, TemplateParseException) as e:

            if isinstance(e, IOError) and e.errno != errno.ENOENT:
                raise e

            resources_to_remove.append(resource)

    if (
        len(resources_to_remove) > 0
        and getattr(settings, "WIRECLOUD_REMOVE_UNSUPPORTED_RESOURCES_MIGRATION", False) is False
    ):
        raise Exception(
            "There are some mashable application components that are not supported anymore (use WIRECLOUD_REMOVE_UNSUPPORTED_RESOURCES_MIGRATION for removing automatically them in the migration process"
        )

    for resource in resources_to_remove:
        print("    Removing %s" % (resource.vendor + "/" + resource.short_name + "/" + resource.version))
        resource.delete()

    def handle(self, *args, **options):
        if len(args) < 1:
            raise CommandError(_('Wrong number of arguments'))

        user = None
        if not options['deploy_only']:
            user = User.objects.get(pk=1)

        for file_name in args:
            try:
                f = open(file_name, 'rb')
                wgt_file = WgtFile(f)
            except:
                print _('Failed to read from %(file_name)s') % {'file_name': file_name}
                continue

            try:
                template_contents = wgt_file.get_template()
                template = TemplateParser(template_contents)
                try:
                    add_widget_from_wgt(f, user, wgt_file=wgt_file, template=template, deploy_only=options['deploy_only'])
                except IntegrityError:
                    if not options['reinstall']:
                        raise
                    else:
                        old_resource = CatalogueResource.objects.get(vendor=template.get_resource_vendor(),
                            short_name=template.get_resource_name(),
                            version=template.get_resource_version()
                        )
                        delete_resource(old_resource, user)
                        add_widget_from_wgt(f, user, wgt_file=wgt_file, template=template)

                wgt_file.close()
                f.close()
                print _('Successfully imported %(name)s widget') % {'name': template.get_resource_name()}
            except IntegrityError:
                print _('Version %(version)s of the %(name)s widget (from %(vendor)s) already exists') % {
                    'name': template.get_resource_name(),
                    'version': template.get_resource_version(),
                    'vendor': template.get_resource_vendor(),
                }
            except:
                print _('Failed to import widget from %(file_name)s') % {'file_name': file_name}

    def handle(self, *args, **options):
        if len(args) < 1:
            raise CommandError(_('Wrong number of arguments'))

        if not options['deploy_only']:
            user = User.objects.get(pk=1)
        else:
            user = FakeUser('admin')

        for file_name in args:
            try:
                wgt_file = WgtFile(file_name)
            except:
                print _('Failed to parse %(file_name)s') % {'file_name': file_name}
                continue

            try:
                template_contents = wgt_file.get_template()
                template = TemplateParser(template_contents)
                try:
                    create_widget_from_wgt(wgt_file, user, deploy_only=options['deploy_only'])
                except IntegrityError:
                    if not options['reinstall']:
                        raise
                    else:
                        deleteWidget(user, template.get_resource_name(),
                            template.get_resource_vendor(),
                            template.get_resource_version()
                        )
                        create_widget_from_wgt(wgt_file, user)

                wgt_file.close()
                print _('Successfully imported %(name)s widget') % {'name': template.get_resource_name()}
            except IntegrityError:
                print _('Version %(version)s of the %(name)s widget (from %(vendor)s) already exists') % {
                    'name': template.get_resource_name(),
                    'version': template.get_resource_version(),
                    'vendor': template.get_resource_vendor(),
                }
            except:
                print _('Failed to import widget from %(file_name)s') % {'file_name': file_name}

def install_resource(file_contents, executor_user):

    if isinstance(file_contents, string_types):
        file_contents = BytesIO(file_contents)
        wgt_file = WgtFile(file_contents)
    elif isinstance(file_contents, WgtFile):
        wgt_file = file_contents
        file_contents = wgt_file.get_underlying_file()
    else:
        raise Exception

    template_contents = wgt_file.get_template()

    template = TemplateParser(template_contents)
    resources = CatalogueResource.objects.filter(vendor=template.get_resource_vendor(), short_name=template.get_resource_name(), version=template.get_resource_version())[:1]

    # Create/recover catalogue resource
    if len(resources) == 1:
        resource = resources[0]
    else:
        resource = add_packaged_resource(file_contents, executor_user, wgt_file=wgt_file)

    return resource

def update_resource_catalogue_cache(orm=None):

    from wirecloud.catalogue.utils import wgt_deployer

    if orm is not None:
        resources = orm.CatalogueResource.objects.all()
    else:
        from wirecloud.catalogue.models import CatalogueResource
        resources = CatalogueResource.objects.all()

    for resource in resources:

        if resource.fromWGT:
            base_dir = wgt_deployer.get_base_dir(resource.vendor, resource.short_name, resource.version)
            wgt_file = WgtFile(os.path.join(base_dir, resource.template_uri))
            template = wgt_file.get_template()
            wgt_file.close()
        else:
            template = download_http_content(resource.template_uri)

        template_parser = TemplateParser(template)
        resource.json_description = json.dumps(template_parser.get_resource_info())
        resource.save()

        msg = _("malformed json data: %s") % unicode(e)
        return build_error_response(request, 400, msg)

    if 'url' not in data:
        return build_error_response(request, 400, _('Missing widget URL'))

    fileURL = data.get('url')
    id_4CaaSt = data.get('4CaaStID')

    try:
        downloaded_file = downloader.download_http_content(fileURL)
    except:
        return build_error_response(request, 409, _('Widget content could not be downloaded'))

    downloaded_file = StringIO(downloaded_file)
    file_contents = WgtFile(downloaded_file)

    # Create a custom version of the resource
    template = TemplateParser(file_contents.get_template())
    template_info = template.get_resource_info()
    template_info['name'] += '@' + id_4CaaSt

    for pref_name, pref_value in data.get('preferences', {}).iteritems():
        for widget_pref_index, widget_pref in enumerate(template_info['preferences']):
            if widget_pref['name'] == pref_name:
                template_info['preferences'][widget_pref_index]['readonly'] = True
                template_info['preferences'][widget_pref_index]['value'] = pref_value
                break

    # Write a new Wgt file
    new_file = StringIO()

    def create(self, request):

        force_create = False
        install_embedded_resources = False
        templateURL = None
        file_contents = None
        content_type = get_content_type(request)[0]
        if content_type == "multipart/form-data":
            force_create = request.POST.get("force_create", "false").strip().lower() == "true"
            install_embedded_resources = (
                request.POST.get("install_embedded_resources", "false").strip().lower() == "true"
            )
            if not "file" in request.FILES:
                return build_error_response(request, 400, _("Missing component file in the request"))

            downloaded_file = request.FILES["file"]
            try:
                file_contents = WgtFile(downloaded_file)
            except zipfile.BadZipfile:
                return build_error_response(request, 400, _("The uploaded file is not a zip file"))

        elif content_type == "application/octet-stream":

            downloaded_file = BytesIO(request.body)
            try:
                file_contents = WgtFile(downloaded_file)
            except zipfile.BadZipfile:
                return build_error_response(request, 400, _("The uploaded file is not a zip file"))

            force_create = request.GET.get("force_create", "false").strip().lower() == "true"
            install_embedded_resources = (
                request.GET.get("install_embedded_resources", "false").strip().lower() == "true"
            )
        else:

            market_endpoint = None

            if content_type == "application/json":
                try:
                    data = json.loads(request.body)
                except ValueError as e:
                    msg = _("malformed json data: %s") % unicode(e)
                    return build_error_response(request, 400, msg)

                install_embedded_resources = normalize_boolean_param(
                    "install_embedded_resources", data.get("install_embedded_resources", False)
                )
                force_create = data.get("force_create", False)
                templateURL = data.get("template_uri")
                market_endpoint = data.get("market_endpoint", None)

            else:
                force_create = request.POST.get("force_create", False) == "true"
                if "url" in request.POST:
                    templateURL = request.POST["url"]

            if market_endpoint is not None:

                if "name" not in market_endpoint:
                    msg = _("Missing market name")
                    return build_error_response(request, 400, msg)

                market_id = market_endpoint["name"]
                market_managers = get_market_managers(request.user)
                if market_id not in market_managers:
                    return build_error_response(request, 409, _("Unknown market: %s") % market_id)

                market_manager = market_managers[market_id]
                downloaded_file = market_manager.download_resource(request.user, templateURL, market_endpoint)

            else:

                try:
                    downloaded_file = download_http_content(templateURL)
                except:
                    return build_error_response(request, 409, _("Content cannot be downloaded from the marketplace"))

            try:
                downloaded_file = BytesIO(downloaded_file)
                file_contents = WgtFile(downloaded_file)

            except zipfile.BadZipfile:

                return build_error_response(
                    request, 400, _("The file downloaded from the marketplace is not a zip file")
                )

        try:

            resource = install_resource_to_user(
                request.user, file_contents=file_contents, templateURL=templateURL, raise_conflicts=force_create
            )

        except OSError as e:

            if e.errno == errno.EACCES:
                return build_error_response(
                    request,
                    500,
                    _("Error writing the resource into the filesystem. Please, contact the server administrator."),
#.........这里部分代码省略.........

def add_packaged_resource(file, user, wgt_file=None, template=None, deploy_only=False):

    close_wgt = False
    if wgt_file is None:
        wgt_file = WgtFile(file)
        close_wgt = True

    if template is None:
        template_contents = wgt_file.get_template()
        template = TemplateParser(template_contents)

    resource_info = template.get_resource_info()
    if resource_info["type"] == "widget":
        code_url = resource_info["contents"]["src"]
        if not code_url.startswith(("http://", "https://")):

            try:
                code = wgt_file.read(code_url)
            except KeyError:
                msg = _("Missing contents file: %(file_name)s.")
                raise InvalidContents(msg % {"file_name": code_url})

            try:
                code.decode(resource_info["contents"]["charset"])
            except UnicodeDecodeError:
                msg = _(
                    "%(file_name)s was not encoded using the specified charset (%(charset)s according to the widget descriptor file)."
                )
                raise InvalidContents(msg % {"file_name": code_url, "charset": resource_info["contents"]["charset"]})

    check_invalid_doc_content(wgt_file, resource_info, "longdescription")
    check_invalid_doc_content(wgt_file, resource_info, "doc")
    check_invalid_doc_content(wgt_file, resource_info, "changelog")

    resource_id = (template.get_resource_vendor(), template.get_resource_name(), template.get_resource_version())
    file_name = "_".join(resource_id) + ".wgt"
    local_dir = wgt_deployer.get_base_dir(*resource_id)
    local_wgt = os.path.join(local_dir, file_name)

    if not os.path.exists(local_dir):
        os.makedirs(local_dir)

    overrides = extract_resource_media_from_package(template, wgt_file, local_dir)
    if close_wgt:
        wgt_file.close()

    f = open(local_wgt, "wb")
    file.seek(0)
    f.write(file.read())
    f.close()

    if not deploy_only:
        resource_info.update(overrides)

        resource = CatalogueResource.objects.create(
            short_name=resource_info["name"],
            vendor=resource_info["vendor"],
            version=resource_info["version"],
            type=CatalogueResource.RESOURCE_TYPES.index(resource_info["type"]),
            creator=user,
            template_uri=file_name,
            creation_date=now(),
            popularity="0.0",
            json_description=json.dumps(resource_info),
        )

        return resource