ChronosXYZ/KademliaDHT
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44 Commits

Author SHA1 Message Date
Joshua Kissoon
fa47aceda9 Kad Server 
- Added a specific exception to throw when the server is down

Kademlia Node
- Setup Shutdown proerly
- Updated a few things
 2014-04-28 16:46:32 +05:30
Joshua Kissoon
54ac3fe740 Some major major changes to the entire Kademlia System. 
Kademlia Node
- The Kademlia class is renamed to KademliaNode - this will now serve as the main node on the network
- The RoutingTable will be a part of this node
Node
- The node class is now a basic class containing information about a node to be used by peers on the network

RoutingTable
- Working on Evicting contacts from the routing table
- Working on Replacement Cache
- Written another simulation to test these new RoutingTable features
 2014-04-28 15:25:07 +05:30
Joshua Kissoon
4fab4320df Routing Table Contact Management 
- Added last seen data to contact
- Contacts are not sorted by lastSeen
- Contact updating last seen time is handled

Built a simulation to test the contact last seen updates
 2014-04-26 21:26:02 +05:30
Joshua Kissoon
21b6667eb8 Routing Table Improvement 
- Setup the RoutingTable to store contact instead of node
- This helps since we'll need more information in the routing to evict contacts, etc
 2014-04-25 16:04:05 +05:30
Joshua Kissoon
6978a8023b Moved the receiver interface to the message/receiver package 2014-04-19 20:11:10 +05:30
Joshua Kissoon
8e6052de23 ContentLookupOperation 
CLO was timing out even if it had found the specified amount of content needed. Fixed that by exiting after the specified # of content required has been found
 2014-04-13 19:15:24 +05:30
Joshua Kissoon
c31e0002e2 Change the wait time on operations to 50ms 2014-04-13 18:58:40 +05:30
Joshua Kissoon
4888bf4dd4 Improve response check time 
When doing a NodeLookup, Content Lookup or Connect operation, after sending the message, we used to wait(operation_timeout) time before checking for a result. 
Now what I'm doing is waiting for 100 ms and check for a result every 100ms; I keep a count of total time waited, and only when the total time > operation_timeout do we make a timeout.
So now we can handle the response if it comes in before Operation_timeout time is finished
 2014-04-13 18:57:54 +05:30
Joshua Kissoon
2dde2a75e0 Setup Content Updating 
- Didn't do this before, but now it's setup: content will be updated on the DHT if a StoreContentMessage is sent with a newer version of the content

GetParameter
- Updated the GetParameter so that it can be constructed from a KadContent object or a StorageEntryMetadata object
- Move it to the DHT package

Others
- Added a few methods to StorageEntryMetadata, StorageEntryManager& DHT to simplify conversions between KadContent, GetParameter & StorageEntryMetadata

Tests
- Written a test to check content updating
 2014-04-05 21:07:57 +05:30
Joshua Kissoon
3e236f4d17 Now we use a StorageEntry class to send data accross peers 
Out KadContent interface also now specifies a set of methods to force it's subclasses to do their own toByte conversions
 2014-04-02 18:05:14 +05:30
Joshua Kissoon
1995682992 Had some issues with saving node state since saving configuration had a problem. We do not need to save configuration! Fixed the bug by making the configuration transient 2014-03-31 22:50:57 +05:30
Joshua Kissoon
a259579f4a Created a KadConfiguration interface that allows passing in a configuration file as needed. 
This allows other applications to create their own configuration files
 2014-03-29 14:37:01 +05:30
Joshua Kissoon
c232fccc69 Added the getNodeStorageFolder method to the Configuration class rather than having it repeated in DHT and Kademlia 
Added a getDHT method to Kademlia
Changed the folder structure in which content is stored in the DHT from Kademlia/substr(contentid, 10)/hash(content).kct TO Kademlia/ownerId/substr(contentid, 10)/hash(content).kct
 2014-03-29 10:52:55 +05:30
Joshua Kissoon
426af4d345 Removed the Save_state decision from configuration and allow the user to specify if to save the state when they call shutdown 2014-03-26 16:23:17 +05:30
Joshua Kissoon
d9fdcc57fd Fixed the bug that was causing replication of content files and StorageEntries. RefreshOperation working well!! 2014-03-22 15:27:22 +05:30
Joshua Kissoon
b93133337c Added a method to store content only locally 
Updated the StoreOperation to store content locally if the local Node is a part of the K-Closest to the content
 2014-03-22 14:33:31 +05:30
Joshua Kissoon
6fdff97429 Setup the get bucket ID computation in one method. 
Added Javadoc
 2014-03-22 12:55:19 +05:30
Joshua Kissoon
3f82c4a0ef Did some code cleanups 
- Add Comments
	- Remove println statements
	- Deleted useless comments, etc
 2014-03-22 12:35:00 +05:30
Joshua Kissoon
0cc24d42f3 Trying to fix an issue in the nodelookupoperation where the k-Closest nodes system doesn't work. 
Lots of extra code added, but we're still in devel! so ...
 2014-03-22 10:53:05 +05:30
Joshua Kissoon
22fee9116a Problem with serializing the DHT also, had to create a DHT specific Serializer class 2014-03-10 14:37:08 +05:30
Joshua Kissoon
e2ca9326c9 Got system state storage and retrieval of state to work! 2014-03-10 13:45:13 +05:30
Joshua Kissoon
e1e6e4e40d Got storage to work! 2014-03-10 11:08:51 +05:30
Joshua Kissoon
d31f0e337f Still working on saving node state, the code is a huge mess right now 2014-03-09 21:04:18 +05:30
Joshua Kissoon
eb7d7b53a4 Setup storing of System state on shutdown 2014-03-09 20:12:11 +05:30
Joshua Kissoon
630f8c2f28 2014-03-07 11:18:04 +05:30
Joshua Kissoon
46147eddd1 Finished a Basic version of the content refresh operation 2014-03-07 11:14:45 +05:30
Joshua Kissoon
a97905e431 Started working on the ContentRefreshOperation 
- Setup a method to get all storage entries for the different content
	- Started setting up the content refresh operation functionality
 2014-03-06 20:42:30 +05:30
Joshua Kissoon
689a35b7bf Cleaned up the core code, added comments and removed all Netbeans generated warnings 2014-03-06 16:51:42 +05:30
Joshua Kissoon
cabb5af742 Finish Bucket Refresh Operation :) 2014-03-06 16:24:50 +05:30
Joshua Kissoon
acd7885dba Started working on the RefreshOperations 2014-03-06 11:21:08 +05:30
Joshua Kissoon
e4726b93f8 Content Store, Retrieve and DHT File and Table management working well 
Got a few Todos now to finish off
 2014-02-26 21:35:37 +05:30
Joshua Kissoon
58f9157c9d Finished coding the lookup content functionality 2014-02-26 18:58:55 +05:30
Joshua Kissoon
a2d0be6124 Finished DHT content storage and retrieval 
Started working on Content lookup and sending content
 2014-02-26 17:07:18 +05:30
Joshua Kissoon
b5e89c6ddb Keeping with some good coding standards - Code to Interfaces not implementations 
Changed the use of ArrayList to List and HashMap to Map
 2014-02-26 11:57:59 +05:30
Joshua Kissoon
9f14c66a31 Persistent content storage now working perfectly!!! 2014-02-26 11:40:06 +05:30
Joshua Kissoon
c67e501df6 Content Sending working between nodes 2014-02-25 22:57:46 +05:30
Joshua Kissoon
fa4b29305e Finished implementing a JsonSerializer to serialize Content 2014-02-25 18:58:32 +05:30
Joshua Kissoon
995da2cffb Continuing work on message sending 2014-02-25 13:42:08 +05:30
Joshua Kissoon
faef3d03ec Started working on sending content messages 2014-02-25 13:01:06 +05:30
Joshua Kissoon
44077d344d Started working on Node refreshing the K-Buckets and DHT content at every time interval t 
Started working on PUT, GET, STORE operation and on DHT Storage
 2014-02-24 21:26:49 +05:30
Joshua Kissoon
3344511603 Finished NodeLookupOperation functionality! Finally found the bug 2014-02-22 19:37:04 +05:30
Joshua Kissoon
58df7be300 Started working on the NodeLookupOperation 
Created some new Messages
Updated a few minor things
 2014-02-19 13:00:29 +05:30
Joshua Kissoon
ed1ac876f3 Fixed the bug in NodeConnection operation where the messages were still being re-sent even after an acknowledgement was received. 
Fixed by canceling the TimerTask
 2014-02-19 10:30:42 +05:30
Joshua Kissoon
b3e1403872 Initial Commit 2014-02-19 02:07:07 +05:30