示例#1
0
    def get_rspec(self,
                  version=None,
                  slice_leaf=None,
                  projectName=None,
                  options={}):

        version_manager = VersionManager()
        version = version_manager.get_version(version)
        if slice_leaf:
            #Manifest RSpec will be used when somebody creates an sliver, returning the resources of this AM and the vm(s) requested by the user.
            rspec_version = version_manager._get_version(
                version.type, version.version, 'manifest')
            options['slice'] = slice_leaf
            of_xml = getManifest(options['slivers'], slice_leaf)
            rspec = RSpec(version=rspec_version, user_options=options)
            rspec.version.add_slivers(of_xml)
        else:
            rspec_version = version_manager._get_version(
                version.type, version.version, 'ad')
            if 'slice_urn' in options.keys():
                #TODO add filter
                pass
            of_xml = getAdvertisement()
            rspec = RSpec(version=rspec_version, user_options=options)
            rspec.version.add_nodes(of_xml)
        return rspec.toxml()
示例#2
0
	def get_rspec(self, version=None, slice_leaf=None, projectName=None, options={}):

        	version_manager = VersionManager()
        	version = version_manager.get_version(version)
		if slice_leaf:
		    #Manifest RSpec will be used when somebody creates an sliver, returning the resources of this AM and the vm(s) requested by the user.
		    rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
		    options['slice'] = slice_leaf
                    of_xml = getManifest(options['slivers'],slice_leaf)
                    rspec = RSpec(version=rspec_version, user_options=options)
                    rspec.version.add_slivers(of_xml)
		else:
        	    rspec_version = version_manager._get_version(version.type, version.version, 'ad')
                    if 'slice_urn' in options.keys() :
                        #TODO add filter
                        pass
		    of_xml = getAdvertisement()
		    rspec = RSpec(version=rspec_version, user_options=options)
                    rspec.version.add_nodes(of_xml)
        	return rspec.toxml()
示例#3
0
文件: rspec.py 项目: HalasNet/felix
class RSpec:
 
    def __init__(self, rspec="", version=None, user_options={}):
        self.header = '<?xml version="1.0"?>\n'
        self.template = """<RSpec></RSpec>"""
        self.version = None
        self.xml = XML()
        self.version_manager = VersionManager()
        self.user_options = user_options
        self.elements = {}
        if rspec:
            if version:
                self.version = self.version_manager.get_version(version)
                self.parse_xml(rspec, version)
            else:
                self.parse_xml(rspec)
        elif version:
            self.create(version)
        else:
            raise InvalidRSpec("No RSpec or version specified. Must specify a valid rspec string or a valid version") 
    def create(self, version=None):
        """
        Create root element
        """
        self.version = self.version_manager.get_version(version)
        self.namespaces = self.version.namespaces
        self.parse_xml(self.version.template, self.version) 
        # eg. 2011-03-23T19:53:28Z 
        date_format = '%Y-%m-%dT%H:%M:%SZ'
        now = datetime.utcnow()
        generated_ts = now.strftime(date_format)
        expires_ts = (now + timedelta(hours=1)).strftime(date_format) 
        self.xml.set('expires', expires_ts)
        self.xml.set('generated', generated_ts)


    def parse_xml(self, xml, version=None):
        self.xml.parse_xml(xml)
        if not version:
            if self.xml.schema:
                self.version = self.version_manager.get_version_by_schema(self.xml.schema)
            else:
                #raise InvalidRSpec('unknown rspec schema: %s' % schema)
                # TODO: Should start raising an exception once SFA defines a schema.
                # for now we just  default to sfa 
                self.version = self.version_manager.get_version({'type':'sfa','version': '1'})
        self.version.xml = self.xml    
        self.namespaces = self.xml.namespaces
    
    def load_rspec_elements(self, rspec_elements):
        self.elements = {}
        for rspec_element in rspec_elements:
            if isinstance(rspec_element, RSpecElement):
                self.elements[rspec_element.type] = rspec_element

    def register_rspec_element(self, element_type, element_name, element_path):
        if element_type not in RSpecElements:
            raise InvalidRSpecElement(element_type, extra="no such element type: %s. Must specify a valid RSpecElement" % element_type)
        self.elements[element_type] = RSpecElement(element_type, element_name, element_path)

    def get_rspec_element(self, element_type):
        if element_type not in self.elements:
            msg = "ElementType %s not registerd for this rspec" % element_type
            raise InvalidRSpecElement(element_type, extra=msg)
        return self.elements[element_type]

    def get(self, element_type, filter={}, depth=0):
        elements = self.get_elements(element_type, filter)
        elements = [self.xml.get_element_attributes(elem, depth=depth) for elem in elements]
        return elements

    def get_elements(self, element_type, filter={}):
        """
        search for a registered element
        """
        if element_type not in self.elements:
            msg = "Unable to search for element %s in rspec, expath expression not found." % \
                   element_type
            raise InvalidRSpecElement(element_type, extra=msg)
        rspec_element = self.get_rspec_element(element_type)
        xpath = rspec_element.path + XpathFilter.xpath(filter)
        return self.xml.xpath(xpath)

    def merge(self, in_rspec):
        self.version.merge(in_rspec)

    def filter(self, filter):
        if 'component_manager_id' in filter:    
            nodes = self.version.get_node_elements()
            for node in nodes:
                if 'component_manager_id' not in node.attrib or \
                  node.attrib['component_manager_id'] != filter['component_manager_id']:
                    parent = node.getparent()
                    parent.remove(node) 
        

    def toxml(self, header=True):
        if header:
            return self.header + self.xml.toxml()
        else:
            return self.xml.toxml()
    

    def save(self, filename):
        return self.xml.save(filename)
示例#4
0
class RSpec:
    def __init__(self, rspec="", version=None, user_options={}):
        self.header = '<?xml version="1.0"?>\n'
        self.template = """<RSpec></RSpec>"""
        self.version = None
        self.xml = XML()
        self.version_manager = VersionManager()
        self.user_options = user_options
        self.elements = {}
        if rspec:
            if version:
                self.version = self.version_manager.get_version(version)
                self.parse_xml(rspec, version)
            else:
                self.parse_xml(rspec)
        elif version:
            self.create(version)
        else:
            raise InvalidRSpec(
                "No RSpec or version specified. Must specify a valid rspec string or a valid version"
            )

    def create(self, version=None):
        """
        Create root element
        """
        self.version = self.version_manager.get_version(version)
        self.namespaces = self.version.namespaces
        self.parse_xml(self.version.template, self.version)
        # eg. 2011-03-23T19:53:28Z
        date_format = '%Y-%m-%dT%H:%M:%SZ'
        now = datetime.utcnow()
        generated_ts = now.strftime(date_format)
        expires_ts = (now + timedelta(hours=1)).strftime(date_format)
        self.xml.set('expires', expires_ts)
        self.xml.set('generated', generated_ts)

    def parse_xml(self, xml, version=None):
        self.xml.parse_xml(xml)
        if not version:
            if self.xml.schema:
                self.version = self.version_manager.get_version_by_schema(
                    self.xml.schema)
            else:
                #raise InvalidRSpec('unknown rspec schema: %s' % schema)
                # TODO: Should start raising an exception once SFA defines a schema.
                # for now we just  default to sfa
                self.version = self.version_manager.get_version({
                    'type': 'sfa',
                    'version': '1'
                })
        self.version.xml = self.xml
        self.namespaces = self.xml.namespaces

    def load_rspec_elements(self, rspec_elements):
        self.elements = {}
        for rspec_element in rspec_elements:
            if isinstance(rspec_element, RSpecElement):
                self.elements[rspec_element.type] = rspec_element

    def register_rspec_element(self, element_type, element_name, element_path):
        if element_type not in RSpecElements:
            raise InvalidRSpecElement(
                element_type,
                extra=
                "no such element type: %s. Must specify a valid RSpecElement" %
                element_type)
        self.elements[element_type] = RSpecElement(element_type, element_name,
                                                   element_path)

    def get_rspec_element(self, element_type):
        if element_type not in self.elements:
            msg = "ElementType %s not registerd for this rspec" % element_type
            raise InvalidRSpecElement(element_type, extra=msg)
        return self.elements[element_type]

    def get(self, element_type, filter={}, depth=0):
        elements = self.get_elements(element_type, filter)
        elements = [
            self.xml.get_element_attributes(elem, depth=depth)
            for elem in elements
        ]
        return elements

    def get_elements(self, element_type, filter={}):
        """
        search for a registered element
        """
        if element_type not in self.elements:
            msg = "Unable to search for element %s in rspec, expath expression not found." % \
                   element_type
            raise InvalidRSpecElement(element_type, extra=msg)
        rspec_element = self.get_rspec_element(element_type)
        xpath = rspec_element.path + XpathFilter.xpath(filter)
        return self.xml.xpath(xpath)

    def merge(self, in_rspec):
        self.version.merge(in_rspec)

    def filter(self, filter):
        if 'component_manager_id' in filter:
            nodes = self.version.get_node_elements()
            for node in nodes:
                if 'component_manager_id' not in node.attrib or \
                  node.attrib['component_manager_id'] != filter['component_manager_id']:
                    parent = node.getparent()
                    parent.remove(node)

    def toxml(self, header=True):
        if header:
            return self.header + self.xml.toxml()
        else:
            return self.xml.toxml()

    def save(self, filename):
        return self.xml.save(filename)