modelverse/model/model.py

import sys
sys.path.append(../kernel/)
sys.path.append(../state/)
from state.main import ModelverseState as MvS
from kernel.main import ModelverseKernel as MvK

from pypdevs.DEVS import AtomicDEVS, CoupledDEVS
from pypdevs.simulator import Simulator

import json

def translate(operation):
    return {
            "CN": "create_node",
            "CE": "create_edge",
            "CNV": "create_nodevalue",
            "CD": "create_dict",
            "RV": "read_value",
            "RO": "read_outgoing",
            "RI": "read_incoming",
            "RE": "read_edge",
            "RD": "read_dict",
            "RDN": "read_dict_node",
            "RDNE": "read_dict_node_edge",
            "RDE": "read_dict_edge",
            "RRD": "read_reverse_dict",
            "RR": "read_root",
            "RDK": "read_dict_keys",
            "DE": "delete_edge",
            "DN": "delete_node",
        }[operation]

class MvSState(object):
    def __init__(self):
        self.queue = []
        self.output = None
        self.mvs = MvS()
        self.timer = float("inf")

class ModelverseState(AtomicDEVS):
    def __init__(self, 
                read_root,
                create_node,
                create_edge,
                create_nodevalue,
                create_dict,
                read_value,
                read_outgoing,
                read_incoming,
                read_edge,
                read_dict,
                read_dict_keys,
                read_dict_edge,
                read_dict_node,
                read_dict_node_edge,
                read_reverse_dict,
                delete_node,
                delete_edge):
        AtomicDEVS.__init__(self, "MvS")
        self.timings = {
                "read_root": read_root,
                "create_node": create_node,
                "create_edge": create_edge,
                "create_nodevalue": create_nodevalue,
                "create_dict": create_dict,
                "read_value": read_value,
                "read_outgoing": read_outgoing,
                "read_incoming": read_incoming,
                "read_edge": read_edge,
                "read_dict": read_dict,
                "read_dict_keys": read_dict_keys,
                "read_dict_edge": read_dict_edge,
                "read_dict_node": read_dict_node,
                "read_dict_node_edge": read_dict_node_edge,
                "read_reverse_dict": read_reverse_dict,
                "delete_node": delete_node,
                "delete_edge": delete_edge,
            }

        self.from_mvk = self.addInPort("from_MvK")
        self.to_mvk = self.addOutPort("to_MvK")

    def extTransition(self, inputs):
        self.state.timer -= self.elapsed
        self.state.queue.extend(inputs[self.from_mvk])
        return self.state

    def outputFnc(self):
        if self.state.output is not None:
            return {self.to_mvk: [self.state.output]}
        else:
            return {}

    def intTransition(self):
        self.state.output = None
        if self.state.queue:
            self.state.output = []
            value = self.state.queue.pop(0)
            # Value contains a list of operations to do
            # So do them and calculate how long it took!
            for v in value:
                self.state.output.append(getattr(self.state.mvs, translate(v[0]))(*v[1])[0])
                self.state.timer += self.timings[translate(v[0])]

        return self.state

    def timeAdvance(self):
        return self.state.timer

class MvKState(object):
    def __init__(self):
        self.mvk = MvK()

class ModelverseKernel(AtomicDEVS):
    def __init__(self):
        AtomicDEVS.__init__(self, "MvK")
        self.state = MvKState()

        self.from_mvi = self.addInPort("from_MvI")
        self.from_mvs = self.addInPort("from_MvS")
        self.to_mvi = self.addOutPort("to_MvI")
        self.to_mvs = self.addOutPort("to_MvS")

    def extTransition(self, inputs):
        if self.from_mvi in inputs:
            # Got input from MvI, so we queue it
        elif self.from_mvs in inputs:
            # Got input from MvS, so we can continue processing

        return self.state

class MvIState():
    def __init__(self):
        self.operations = []
        self.output = []
        self.memory = {}

class ModelverseInterface(AtomicDEVS):
    def __init__(self, operations):
        AtomicDEVS.__init__(self, "MvI")
        self.state = MvIState()
        self.state.operations = operations

        self.to_mvk = self.addOutPort("to_MvK")
        self.from_mvk = self.addInPort("from_MvK")

    def intTransition(self):
        while self.state.operations:
            i = self.state.operations[0]
            if isinstance(i, int) and i not in self.memory:
                break
            self.state.operations.pop(0)
        return self.state

    def extTransition(self, inputs):
        for inp in inputs[self.from_mvk]:
            if inp["value"] == "None" and isinstance(self.state.processing[0], int) and self.state.processing[0] not in self.memory:
                self.state.memory[self.state.processing.pop(0)] = int(inp["id"])
            else:
                self.state.output.append(inp)
        return self.state

    def outputFnc(self):
        send = []
        for i in self.state.operations:
            if isinstance(i, int) and i not in self.memory:
                break
            elif isinstance(i, int) and i in self.memory:
                # Pass a reference!
                send.append(("R", self.memory[i]))
            elif not isinstance(i, int):
                send.append(("V", i))
        return {self.to_mvk: [json.dumps(send)]}

    def timeAdvance(self):
        if self.state.processing and (not isinstance(self.state.processing[0], int) or self.state.processing[0] in self.memory):
            return 0
        else:
            return float("inf")

class NetworkState(object):
    def __init__(self):
        self.processing = []
        self.timer = float("inf")

class Network(AtomicDEVS):  
    def __init__(self, latency, bytes_per_second):
        AtomicDEVS.__init__(self, "Network")
        self.state = NetworkState()

        self.input_port = self.addInPort("input_port")
        self.output_port = self.addOutPort("output_port")

        self.latency = latency
        self.bytes_per_second = bytes_per_second

    def intTransition(self):
        self.state.processing.pop(0)
        if self.state.processing:
            self.state.timer = len(self.state.processing[0]) / self.bytes_per_second + self.latency
        else:
            self.state.timer = float("inf")
        return self.state

    def extTransition(self, inputs):
        self.state.timer -= self.elapsed
        self.state.processing.extend(inputs[self.input_port])
        return self.state

    def outputFnc(self):
        return {self.output_port: [self.state.processing[0]]}

    def timeAdvance(self):
        return self.state.timer

class System(CoupledDEVS):
    def __init__(self,
                operations,
                mvi2mvk_latency,
                mvi2mvk_bandwidth,
                mvk2mvs_latency,
                mvk2mvs_bandwidth,
                mvs2mvk_latency,
                mvs2mvk_bandwidth,
                mvk2mvi_latency,
                mvk2mvi_bandwidth,
                read_root,
                create_node,
                create_edge,
                create_nodevalue,
                create_dict,
                read_value,
                read_outgoing,
                read_incoming,
                read_edge,
                read_dict,
                read_dict_keys,
                read_dict_edge,
                read_dict_node,
                read_dict_node_edge,
                read_reverse_dict,
                delete_node,
                delete_edge):
        CoupledDEVS.__init__(self, "System")

        self.mvi = self.addSubModel(ModelverseInterface(\
                            operations          = operations
                        ))
        self.mvk = self.addSubModel(ModelverseKernel())
        self.mvs = self.addSubModel(ModelverseState(\
                            read_root           = read_root,
                            create_node         = create_node,
                            create_edge         = create_edge,
                            create_nodevalue    = create_nodevalue,
                            create_dict         = create_dict,
                            read_value          = read_value,
                            read_outgoing       = read_outgoing,
                            read_incoming       = read_incoming,
                            read_edge           = read_edge,
                            read_dict           = read_dict,
                            read_dict_keys      = read_dict_keys,
                            read_dict_edge      = read_dict_edge,
                            read_dict_node      = read_dict_node,
                            read_dict_node_edge = read_dict_node_edge,
                            read_reverse_dict   = read_reverse_dict,
                            delete_node         = delete_node,
                            delete_edge         = delete_edge
                        ))
        self.mvi2mvk = self.addSubModel(Network(\
                            mvi2mvk_latency     = mvi2mvk_latency,
                            mvi2mvk_bandwidth   = mvi2mvk_bandwidth
                        ))
        self.mvk2mvs = self.addSubModel(Network(\
                            mvk2mvs_latency     = mvk2mvs_latency,
                            mvk2mvs_bandwidth   = mvk2mvs_bandwidth
                        ))
        self.mvs2mvk = self.addSubModel(Network(\
                            mvs2mvk_latency     = mvs2mvk_latency,
                            mvs2mvk_bandwidth   = mvs2mvk_bandwidth
                        ))
        self.mvk2mvi = self.addSubModel(Network(\
                            mvk2mvi_latency     = mvk2mvi_latency,
                            mvk2mvi_bandwidth   = mvk2mvi_bandwidth
                        ))

        self.connectPorts(self.mvi.to_mvk, self.mvi2mvk.input_port)
        self.connectPorts(self.mvi2mvk.output_port, self.mvk.from_mvi)
        self.connectPorts(self.mvk.to_mvs, self.mvk2mvs.input_port)
        self.connectPorts(self.mvk2mvs.output_port, self.mvs.from_mvk)
        self.connectPorts(self.mvs.to_mvk, self.mvs2mvk.input_port)
        self.connectPorts(self.mvs2mvk.output_port, self.mvk.from_mvs)
        self.connectPorts(self.mvk.to_mvi, self.mvk2mvi.input_port)
        self.connectPorts(self.mvk2mvi.output_port, self.mvi.from_mvk)