Changes between Version 4 and Version 5 of Internal/OpenFlow/Controllers/FloodLight
- Timestamp:
- May 5, 2012, 5:27:33 AM (12 years ago)
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Internal/OpenFlow/Controllers/FloodLight
v4 v5 1 1 = The !FloodLight Controller. = 2 !FloodLight is an open-source, Java-based controller maintained by !OpenFlowHub. 3 == I. Installation. == 2 !FloodLight is an open-source, Java-based controller maintained by !OpenFlowHub. [[BR]][[BR]] 3 This page is comprised of many notes that may be transient. Anything referencing links will be repeated for completeness. 4 == Quick Links == 5 [#install Installation][[BR]] 6 [#modding Adding functionality][[BR]] 7 [#arch Architecture] - the section most likely to change as I figure things out/discover my own misconceptions. [[BR]] 8 [#vm Floodlight/Mininet VM][[BR]] 9 == Installation. == #install 4 10 The following describes the installation of !FloodLight on an Ubuntu 11.04 (natty) system. Installation is described on their [http://floodlight.openflowhub.org/getting-started/ website], but will be repeated here. If you are using SSH, You may want X11 forwarding to be able to launch Eclipse later on.[[BR]] 5 11 … … 31 37 * Check the box for “Floodlight”. No other Projects should be present and none should be selected. 32 38 * Click Finish. 33 Once imported, the controller may be run by right-clicking on Controller.java (net.floodlightcontroller.core.internal.Controller.java, found under src/main/java) and choosing Run As -> Java Application. 39 Once imported, the controller may be run by right-clicking on Controller.java (net.floodlightcontroller.core.internal.Controller.java, found under src/main/java) and doing the following: 40 * Click Run->Run Configurations 41 * Right Click Java Application->New 42 * For Name use FloodlightLaunch 43 * For Project use Floodlight 44 * For Main use net.floodlightcontroller.core.Main 45 * Click Apply 46 This creates a handle for launching Controller.java as an application. 34 47 [[BR]][[BR]] 35 48 The learning switch is loaded by default. The controller listens on 0.0.0.0:6633 (host, all interfaces with an IP address). 36 49 37 == II. Adding functionality. ==38 A base tutorial can be found [http://floodlight.openflowhub.org/developing-floodlight/ here]. The rough steps are the following:50 == Adding functionality. == #modding 51 A base tutorial can be found [http://floodlight.openflowhub.org/developing-floodlight/ here]. The steps assume that you are using Eclipse. The rough steps are the following: 39 52 1. Create a new class under src/main/java, basing it off of a template, if it exists 40 53 2. Register the module so that it is loaded at startup. This involves adding the fully qualified module name to two files: … … 42 55 * ''' floodlightdefault.properties ''' - list of modules to be loaded at startup. 43 56 57 == Architecture == #arch 58 * ref: http://www.openflowhub.org/display/floodlightcontroller/Advanced+Tutorial 59 The controller has two main components: 60 * the core, which listens to !OpenFlow messages and dispatches events, and 61 * secondary modules which handle the events e.g PACKET_INs. 62 The secondary modules register with the core module when the controller is starting up. They do everything from recording certain aspects of flows to providing a RESTful API to modifying the flow tables within switches. They may also export services to leverage other modules, such as the REST API. 44 63 64 === Some module components === 65 * IFloodlightProviderService : Needed for listening to !OpenFlow messages by registering with the !FloodlightProvider. 66 * getModuleDependencies() : in a module, the function to indicate dependencies to the module loader e.g the IFloodlightProviderService above. 67 * init() : in a module, the function where contexts are defined for services that the module is dependent on. It seems to be similar to a constructor. 68 * isCallbackOrderingPrereq(), isCallbackOrderingPostreq() : where the module should be in the message processing chain. 69 * startUp() : in a module, defines external initializations associated with other modules to which it is dependent on. 70 * receive() : defines what a module does when it receives an event e.g. the one specified in startUp(). 45 71 46 = The Floodlight VM = 72 = The Floodlight VM = #vm 47 73 This is a VM image geared towards VirtualBox containing a running floodlight instance, mininet, and wireshark. [[BR]] 48 74 It can easily be run on qemu/kvm after conversion to `qcow2` with `qemu-img convert -O` and with the parameters used to run mininet.
