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From "V.Narayanan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-2921) Replication: Add a network service that connects the master and slave Derby instances
Date Sun, 16 Sep 2007 18:01:32 GMT

     [ https://issues.apache.org/jira/browse/DERBY-2921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

V.Narayanan updated DERBY-2921:

    Attachment: Replication_Network_expln_v6.txt

Pls find attached the patch contains the Network part of the replication code changed to conform
to the class diagrams attached in Derby-2872. Also pls find attached a text file that explains
the summary of the changes.

I tested the network code with standalone programs for now. The following
code snipet would start the receiver.

        ReplicationMessageReceive rec = new ReplicationMessageReceive(null, -1);
and the following would start the transmitter and cause it to send the
initiator message breaking the accept wait of the receiver.

        ReplicationMessageTransmit send = new 
            ReplicationMessageTransmit(null, -1);
The code helps to check that the transmission and the reception of messages and the 
parsing of the initiator message is happening correctly. Pls note that in this case 
the network classes would use the default values for the host name and the port number.

This code can be further extended to test the Receiver and the transmitter for other
type of replication messages, but I am hoping that this exercise can wait for creation
of further interfaces that actually use the network code.

I am running tests on this code and shall revert back with results as soon as the tests

I request for this patch to be considered for reviews and comments.

> Replication: Add a network service that connects the master and slave Derby instances
> -------------------------------------------------------------------------------------
>                 Key: DERBY-2921
>                 URL: https://issues.apache.org/jira/browse/DERBY-2921
>             Project: Derby
>          Issue Type: Sub-task
>          Components: Services
>    Affects Versions:
>            Reporter: Jørgen Løland
>            Assignee: V.Narayanan
>         Attachments: Replication_Network_expln_v6.txt, Replication_Network_v1.diff, Replication_Network_v1.stat,
Replication_Network_v2.diff, Replication_Network_v2.stat, Replication_Network_v3.diff, Replication_Network_v3.stat,
Replication_Network_v4.diff, Replication_Network_v4.stat, Replication_Network_v5.diff, Replication_Network_v5.stat,
Replication_Network_v6.diff, Replication_Network_v6.stat
> A network connection is required between the master and slave Derby instances of a replicated
database. The connection will be used to send many kinds of messages, including:
> * log records
> * the database (when replication is started)
> * master -> slave commands (like "stop replication")

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