Add in old URIs for static entry pusher for backwards compatibility. Note this only addresses URI compatibility *not* JSON key:value compatibility. Clean up warnings in LoadBalancer unit test

Finally! :-) OFMessageDamper works. Required creating a custom hashCode() (hashCodeIgnoreXid()) function for all OFMessages we would like to dampen.

This is a huge commit. Lots of (good) stuff has been added and updated. First and foremost, OpenFlow 1.5 is now supported (yay) via a major update to OpenFlowJ-Loxi. This update necessitated the update of the Static Flow Pusher module and MatchUtils, ActionUtils, and InstructionUtils to support the newly-added features. This prompted me to explore the SFP to see if there was anything that could be improved. First thing that came to mind was adding support to push OpenFlow groups in addition to flows, thus group support has been added to the SFP via JSON, which is the format that should have been used in the first place. Action lists will be updated in the near future to be JSON instead of one massive ',', '=', and '->' delimited string. Thus, the Static Flow Pusher has been renamed the StaticEntryPusher, since it now encompasses groups. While groups were being added to the SFP (ahem...SEP), a number of optimizations were made to the SEP code, greatly reducing its complexity (IMHO). The support for OpenFlow meters can now be added rather trivially in the future, if desired. Last thing to note about the SEP is the work-in-progress addition of a 'schema' API to allow northbound applications to get information about SEP syntax. This is not complete yet, but the skeleton code is in place. Next thing in this pull request is miscellaneous changes throughout the controller, primarily in (de)serializers and REST APIs to support OpenFlow 1.5. Next item of business is the removal of the DebugEventService. This is an artifact of days past and need not clutter the controller anymore. Same goes for the TestModule; now that we have better tutorials and documentation on the wiki, an example isn't necessary. And, last but not least, some old libraries that weren't being used have now been removed.

Updated to Java 8, junit-4.12, easymock-3.4. Still having trouble having unit tests pass in Eclipse for DeviceManagerImplTest, but they work find in maven and ant. testPacketInBasic and testPacketInBasicIPv6 are the trouble makers (fail occasionally).

Handle link and port down events in Forwarding. Remove flows ingress and egress a failed port or link to eliminate stale entries. This is done in Forwarding instead of the Link Discovery Manager, since some user modules might not want their flows removed and wish for them to persist until the link comes back up.

Hello guys, I have changed the logic of simple.FT (Fault Tolerant) module.

The basic idea is, the FT module register on SyncManager to receive RPC events
(connect and disconect nodes).

In connect events, the controller send its switch list to storage and
the other controllers can sync this info.
In disconnect events, the controller is informed about which controller crashed and
get switch list from storage and send a role request message to swicthes.

Regards.

and compare with initial cluster config defined in floodlightdefault.properties.

Issues: do not treat the message ROLE_STATUS.
In case a cluster goes down and goes up, there is a problem, the Controller does not change its own role to role slave.

But works properly as Primary-Backup configuration.

Under development...

 [junit] Running net.floodlightcontroller.devicemanager.internal.DeviceManagerImplTest
 [junit] Tests run: 37, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 0,503 sec
 [junit] TEST net.floodlightcontroller.devicemanager.internal.DeviceManagerImplTest FAILED

ant tests result in some failures.

SyncManager results:
13:08:12.696 ERROR [i.n.u.ResourceLeakDetector:main] LEAK: You are creating too many HashedWheelTimer instances.  HashedWheelTimer is a shared resource that must be reused across the JVM,so that only a few instances are created.

Include the completion listener in the MockFloodlightProvider

Added unit test for writing messages while in MASTER/SLAVE. Changed to a blacklist mechanism instead of a whitelist (to match how the spec describes invalid (write) SLAVE messages). Completed invalid SLAVE messages for each OF version.

Updated to properly handle IOFSwitch write()'s while in SLAVE role. TODO: make unit test for trapping invalid messages while in SLAVE. TODO: complete logic for handling valid SLAVE message types per OF version.

OMG, it was a timeout that was too short. Good news is that the bootstrap unit test passes. Bad news is that there is a timeout somewhere in the sync module that is way too long and causes the unit tests for sync to take literally a few minutes. Will look into that next.

Fixed a blunder in OFSwitchManager and Controller to allow switches to connect if a server IP isn't explicitly given in floodlihgtdefault.properties. Still can't get sync's bootstrap test to pass. Feels like a race condition b/t update threads.

Core ported to Netty 4 along with unit tests. Still need to do sync and some loxi-related compile errors in web.serializers.

Tidy up topology and get rid of some many redundant functions in ITopologyService. Also, fix a bug that prevents outgoing broadcast ports from being queried on single-switch islands.

Implemented a rolling link latency history for switch links. Each link will contain a single latency value. When a link update occurs, the latency computed from the LLDP packet is added to the exisiting link's LinkInfo. LinkInfo maintains a latency history for link L. The 1-to-1 mapping between Link and LinkInfo still exists. LinkInfo will provide a new latency based on the rolling window size and update threshold -- configurable through floodlightdefault.properties but default to 5 latency data points and 30%, respectively. As an example, the 0th latency value is used as the intial latency for a particular (new) link. Each LLDP update for this link will contain a latency. This latency is added to the LinkInfo from updates 0 - 3. Update 4 will make 5 historical latency data points. This will cause an average to be computed of these 5 data points. If the average is +/-30% of the latency recorded in the 0th latency, the link latency will be updated. For exach, successive latency recorded, the same average will be computed. If the new average is not +/-30% of the old recorded value, an update will not occcur. Every latency 'replacement/update' will cause a new topology to be computed in the topology manager. Keeping a rolling average takes into account current network conditions, but also helps to average out outliers and keeps topology updates to a minimum.

We now take into account the one-way latency between each switch (src, dst) and the controller when determining data plane link latencies.

First round of support for primitive link latency detection. We do not presently account for the latency between the switches and the controller.

Forwarding unit tests updated to test for IPv6 forwarding. Updated IPv6 and Ethernet to print known packets correctly and account for forgetting to set the IpProtocol, respectively.

Added some IPv6 tests and added the IPv6 secondary index to the device manager's init function (ooops).

A new and improved device manager (woohoo). We support IPv6 now and have fixed some bugs. Other changes have been made to prefer 'empty/zero' objects instead of null, which made using the device manger less type safe and more error prone. Unit tests for IPv6 packets will come next, so IPv6 support should be considered experimental for this commit (although in theory it should be fine if IPv4 is).

Lots of goodies here. Apologies for the largish commit. Most files are just removing warnings that were introduced after updating JSON libraries a short time ago. IOFSwitch now can return specific list of tables supported. This is useful for the OFHandshakeHandler for one, which not inserts table miss flows up to the table ID indicated in floodlightdefault.properties, but only in the table IDs that actually exist. Up next, Forwarding has some preliminary, isolated support for IPv6. Still need to integrate support into the device service, which is more complex. Forwarding also supports routing through OF switches of multiple OFVersions. This was a very subtle bug that was fixed by modifying MatchUtils to create a Match clone to a specific OFVersion. This utility function is used to generate a Match compatible with the OpenFlow version of the switch. Believe it or not, Loxi actually allows you to insert a Match of OFVersion.OF_X into an OFFlowMod of OFVersion.OF_Y. The switch, of course, doesn't have a clue how to interpret it and either reports an error, or actually resets the OF channel, in the case of a couple hardware switches tested on. Good news is this is fixed now :-).

Patched the handshake so that on transition to master, we guarantee the order of flow table operations (e.g. clear, adding table-miss flows, and IOFSwitchListener module switchAdded/switchActivated listener operations). Barriers are used inbetween all such operations.

Tweaked configuration of table-miss flows so that you can specify the number of tables rather than the max table ID. Both of these have their pros and cons, but we'll go with specifying the max total for now, which allows a '0' to indicate 'no tables' rather than 'up to and including table 0'.