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How to use exists_switch method in lisa

Best Python code snippet using lisa_python

topology_manager.py

2class TopologyManager:3    def __init__(self):4        self.graph = nx.Graph()5    def add_switch(self, switch_identifier):6        if self.exists_switch(switch_identifier):7            return False8        description = {9            "type": "switch"10        }11        self.graph.add_node(switch_identifier, description = description)12        return True13    def remove_switch(self, switch_identifier):14        if not self.exists_switch(switch_identifier):15            return False16        self.graph.remove_node(switch_identifier)17        for host in self.hosts():18            host_description = self.graph.node[host]["description"]19            switch_identifier_connected_to = host_description["switch_identifier_connected_to"]20            if switch_identifier_connected_to == switch_identifier:21                self.graph.remove_node(host)22        return True23    def switches(self):24        switches = []25        for node in self.graph.nodes(data ="description"):26            node_identifier = node[0]27            node_type = node[1]["type"]28            if node_type == "switch":29                switches.append(node_identifier)30        return switches31    def add_host(self, host_identifier):32        if self.exists_host(host_identifier):33            return False34        description = {35            "type": "host"36        }37        self.graph.add_node(host_identifier, description = description)38        return True39    def update_host(self, host_identifier, **host_parameters):40        if not self.exists_host(host_identifier):41            return False42        for parameter, parameter_value in host_parameters.items():43            self.graph.node[host_identifier]["description"][parameter] = parameter_value44        return True45    def remove_host(self, host_identifier):46        if not self.exists_host(host_identifier):47            return False48        self.graph.remove_node(host_identifier)49        return True50    def hosts(self):51        hosts = []52        for node in self.graph.nodes(data ="description"):53            node_identifier = node[0]54            node_type = node[1]["type"]55            if node_type == "host":56                hosts.append(node_identifier)57        return hosts58    def add_link(self, node_from_identifier, node_to_identifier, node_from_port, node_to_port):59        if not self.graph.has_node(node_from_identifier) or not self.graph.has_node(node_to_identifier):60            return False61        if self.exists_link(node_from_identifier, node_to_identifier):62            return False63        description = {64            "type": "link",65            ("port_" + node_from_identifier): node_from_port,66            ("port_" + node_to_identifier): node_to_port67        }68        self.graph.add_edge(node_from_identifier, node_to_identifier, description = description)69        print(self.topology())70        return True71    def remove_link(self, node_from_identifier, node_to_identifier):72        if not self.graph.has_node(node_from_identifier) or not self.graph.has_node(node_to_identifier):73            return False74        if not self.exists_link(node_from_identifier, node_to_identifier):75            return False76        self.graph.remove_edge(node_from_identifier, node_to_identifier)77        return True78    def links(self):79        edges = []80        for edge in self.graph.edges():81            edges.append(edge)82        return edges83    def exists_switch(self, switch_identifier):84        exists = self.switches().__contains__(switch_identifier)85        return exists86    def exists_host(self, host_identifier):87        exists = self.hosts().__contains__(host_identifier)88        return exists89    def exists_link(self, node_from_identifier, node_to_identifier):90        exists = self.graph.has_edge(node_from_identifier, node_to_identifier)91        return exists92    def clear_topology(self):93        self.graph.clear()94    # REST API95    def topology(self):96        topology = {97            "nodes": {...

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