Package org.cloudbus.cloudsim.network.switches

Class AbstractSwitch

java.lang.Object
org.cloudbus.cloudsim.core.CloudSimEntity
org.cloudbus.cloudsim.network.switches.AbstractSwitch
All Implemented Interfaces:
Cloneable, Comparable<SimEntity>, Runnable, Identifiable, Nameable, SimEntity, Switch
Direct Known Subclasses:
AggregateSwitch, EdgeSwitch, RootSwitch
public abstract class AbstractSwitch
extends CloudSimEntity
implements Switch
A base class for implementing Network Switch.
Author:
Saurabh Kumar Garg, Manoel Campos da Silva Filho

  • Constructor Details

  • Method Details

    • startInternal

      protected void startInternal()
      Description copied from class: CloudSimEntity
      Defines the logic to be performed by the entity when the simulation starts.
      Specified by:
      startInternal in class CloudSimEntity

    • processEvent

      public void processEvent​(SimEvent evt)
      Description copied from interface: SimEntity
      Processes events or services that are available for the entity. This method is invoked by the CloudSim class whenever there is an event in the deferred queue, which needs to be processed by the entity.
      Specified by:
      processEvent in interface SimEntity
      Parameters:
      evt - information about the event just happened

    • processHostPacket

      protected void processHostPacket​(SimEvent evt)
      Process a packet sent to a host.
      Parameters:
      evt - The packet sent.

    • processPacketDown

      protected void processPacketDown​(SimEvent evt)
      Sends a packet to Datacenter connected through a downlink port.
      Parameters:
      evt - Event/packet to process

    • getVmHost

      protected NetworkHost getVmHost​(Vm vm)
      Gets the Host where a VM is placed.
      Parameters:
      vm - the VM to get its Host
      Returns:
      the Host where the VM is placed

    • processPacketUp

      protected void processPacketUp​(SimEvent evt)
      Sends a packet to Datacenter connected through a uplink port.
      Parameters:
      evt - Event/packet to process

    • downlinkTransferDelay

      public double downlinkTransferDelay​(HostPacket packet, int simultaneousPackets)
      Description copied from interface: Switch
      Considering a list of packets to be sent simultaneously, computes the expected time to transfer each packet through the downlink, assuming that the bandwidth is shared equally between all packets.
      Specified by:
      downlinkTransferDelay in interface Switch
      simultaneousPackets - number of packets to be simultaneously sent
      Returns:
      the expected transmission time in seconds

    • uplinkTransferDelay

      public double uplinkTransferDelay​(HostPacket packet, int simultaneousPackets)
      Description copied from interface: Switch
      Considering a list of packets to be sent simultaneously, computes the expected time to transfer each packet through the uplink, assuming that the bandwidth is shared equally between all packets.
      Specified by:
      uplinkTransferDelay in interface Switch
      simultaneousPackets - number of packets to be simultaneously sent
      Returns:
      the expected transmission time in seconds

    • packetTransferDelay

      protected double packetTransferDelay​(HostPacket netPkt, double bwCapacity, int simultaneousPackets)
      Computes the network delay to send a packet through the network, considering that a list of packets will be sent simultaneously.
      Parameters:
      netPkt - the packet to be sent
      bwCapacity - the total bandwidth capacity (in Megabits/s)
      simultaneousPackets - number of packets to be simultaneously sent
      Returns:
      the expected time to transfer the packet through the network (in seconds)

    • bandwidthByPacket

      protected double bandwidthByPacket​(double bwCapacity, int simultaneousPackets)
      Considering a list of packets to be sent, gets the amount of available bandwidth for each packet, assuming that the bandwidth is shared equally among all packets.
      Parameters:
      bwCapacity - the total bandwidth capacity to share among the packets to be sent (in Megabits/s)
      simultaneousPackets - number of packets to be simultaneously sent
      Returns:
      the available bandwidth for each packet in the list of packets to send (in Megabits/s) or the total bandwidth capacity if the packet list has 0 or 1 element

    • shutdown

      public void shutdown()
      Description copied from interface: SimEntity
      Shuts down the entity. This method is invoked by the CloudSim before the simulation finishes. If you want to save data in log files this is the method in which the corresponding code would be placed.
      Specified by:
      shutdown in interface SimEntity
      Overrides:
      shutdown in class CloudSimEntity

    • getUplinkBandwidth

      public double getUplinkBandwidth()
      Description copied from interface: Switch
      Gets the bandwidth this Switch has to communicate with Switches in the upper layer.
      Specified by:
      getUplinkBandwidth in interface Switch
      Returns:
      Bandwidth of uplink (in Megabits/s).
      See Also:
      Switch.getUplinkSwitches()

    • setUplinkBandwidth

      public final void setUplinkBandwidth​(double uplinkBandwidth)
      Description copied from interface: Switch
      Sets the bandwidth this Switch has to communicate with Switches in the upper layer.
      Specified by:
      setUplinkBandwidth in interface Switch
      Parameters:
      uplinkBandwidth - uplink bandwidth to set (in Megabits/s).
      See Also:
      Switch.getUplinkSwitches()

    • getDownlinkBandwidth

      public double getDownlinkBandwidth()
      Description copied from interface: Switch
      Gets the bandwidth this Switch has to communicate with Switches in the lower layer.
      Specified by:
      getDownlinkBandwidth in interface Switch
      Returns:
      Bandwidth of downlink (in Megabits/s).
      See Also:
      Switch.getDownlinkSwitches()

    • setDownlinkBandwidth

      public final void setDownlinkBandwidth​(double downlinkBandwidth)
      Description copied from interface: Switch
      Sets the bandwidth this Switch has to communicate with Switches in the lower layer.
      Specified by:
      setDownlinkBandwidth in interface Switch
      Parameters:
      downlinkBandwidth - downlink bandwidth to set (in Megabits/s).
      See Also:
      Switch.getDownlinkSwitches()

    • getPorts

      public int getPorts()
      Description copied from interface: Switch
      Gets the number of ports the switch has.
      Specified by:
      getPorts in interface Switch
      Returns:

    • setPorts

      public final void setPorts​(int ports)
      Description copied from interface: Switch
      Sets the number of ports the switch has.
      Specified by:
      setPorts in interface Switch
      Parameters:
      ports - the number of ports to set

    • getSwitchingDelay

      public double getSwitchingDelay()
      Description copied from interface: Switch
      Gets the latency time the switch spends to process a received packet. This time is considered constant no matter how many packets the switch have to process (in seconds).
      Specified by:
      getSwitchingDelay in interface Switch
      Returns:
      the switching delay

    • setSwitchingDelay

      public final void setSwitchingDelay​(double switchingDelay)
      Description copied from interface: Switch
      Sets the latency time the switch spends to process a received packet. This time is considered constant no matter how many packets the switch have to process (in seconds).
      Specified by:
      setSwitchingDelay in interface Switch
      Parameters:
      switchingDelay - the switching delay to set

    • getUplinkSwitches

      public List<Switch> getUplinkSwitches()
      Description copied from interface: Switch
      Gets the list of Switches in the upper layer that this Switch is connected to.
      Specified by:
      getUplinkSwitches in interface Switch
      Returns:

    • getDownlinkSwitches

      public List<Switch> getDownlinkSwitches()
      Description copied from interface: Switch
      Gets the list of Switches in the lower layer that this Switch is connected to.
      Specified by:
      getDownlinkSwitches in interface Switch
      Returns:

    • getDownlinkSwitchPacketList

      protected List<HostPacket> getDownlinkSwitchPacketList​(Switch downlinkSwitch)
      Gets the list of packets to be sent to a downlink switch.
      Parameters:
      downlinkSwitch - the id of the switch to get the list of packets to send
      Returns:
      the list of packets to be sent to the given switch.

    • getUplinkSwitchPacketList

      protected List<HostPacket> getUplinkSwitchPacketList​(Switch uplinkSwitch)
      Gets the list of packets to be sent to an uplink switch.
      Parameters:
      uplinkSwitch - the switch to get the list of packets to send
      Returns:
      the list of packets to be sent to the given switch.

    • getHostPacketList

      protected List<HostPacket> getHostPacketList​(NetworkHost host)
      Gets the list of packets to be sent to a host.
      Parameters:
      host - the host to get the list of packets to send
      Returns:
      the list of packets to be sent to the given host.

    • addPacketToSendToDownlinkSwitch

      protected void addPacketToSendToDownlinkSwitch​(Switch downlinkSwitch, HostPacket packet)
      Adds a packet that will be sent to a downlink Switch.
      Parameters:
      downlinkSwitch - the target switch
      packet - the packet to be sent

    • addPacketToSendToUplinkSwitch

      protected void addPacketToSendToUplinkSwitch​(Switch uplinkSwitch, HostPacket packet)
      Adds a packet that will be sent to a uplink Switch.
      Parameters:
      uplinkSwitch - the target switch
      packet - the packet to be sent

    • addPacketToSendToHost

      protected void addPacketToSendToHost​(NetworkHost host, HostPacket packet)
      Adds a packet that will be sent to a NetworkHost.
      Parameters:
      host - the target NetworkHost
      packet - the packet to be sent

    • getDatacenter

      public NetworkDatacenter getDatacenter()
      Description copied from interface: Switch
      Gets the Datacenter where the switch is connected to.
      Specified by:
      getDatacenter in interface Switch
      Returns:

    • setDatacenter

      public void setDatacenter​(NetworkDatacenter datacenter)
      Description copied from interface: Switch
      Sets the Datacenter where the switch is connected to.
      Specified by:
      setDatacenter in interface Switch
      Parameters:
      datacenter - the Datacenter to set

    • getVmEdgeSwitch

      protected EdgeSwitch getVmEdgeSwitch​(HostPacket pkt)
      Gets the EdgeSwitch that the Host where the VM receiving a packet is connected to.
      Parameters:
      pkt - the packet targeting some VM
      Returns:
      the Edge Switch connected to the Host where the targeting VM is placed

    • addPacketToBeSentToFirstUplinkSwitch

      protected void addPacketToBeSentToFirstUplinkSwitch​(HostPacket netPkt)