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Jonathan Halliday updated JBTM-389:
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Component/s: Configuration
Recovery
Transaction Core
Fix Version/s: 4.4
TransactionStatusManager and Recovery integration without Sockets
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Key: JBTM-389
URL:
https://jira.jboss.org/jira/browse/JBTM-389
Project: JBoss Transaction Manager
Issue Type: Feature Request
Security Level: Public(Everyone can see)
Components: Application Server Integration, Configuration, Recovery, Transaction
Core
Affects Versions: 4.2.3
Environment: JBoss 4.2.3
Reporter: Dmitri Voronov
Assignee: Jonathan Halliday
Fix For: 4.4
Attachments: jboss-jta-without-sockets.zip
In the current JBoss integration the communication within Arjuna occurs over Sockets
whereby the communication is within the same JVM and doesn't need to use any socket or
listen on any ports. It requires at least two ports, one for TransactionStatusManager and
one for the recovery. Another one is not configurable and is used as Arjuna's unique
PID.
If no ports have been configured, the next free port is opened.
In our environment we manage the port ranges per JBoss instance. This port range contains
the ports for all standard protocols used by JBoss like HTTPS, RMI etc. This port range is
a part of the JBoss instance configuration.
Firstly, we would like to avoid a probability that one JBoss instance can allocate the
ports dedicated to another instance, by opening its sockets on a next free port.
Secondly, the configuration overhead is large, if the ports should be determined. Since
we have up to 100 JBoss instances per stage running it is quite difficult to upgrade their
configuration with new ports.
In my opinion an implementation without involvement of sockets would simplify
Arjuna's configuration, avoid any port conflicts and increase the usability.
My suggestion is to use piped streams (see attachment); it would prevent the changes on
Arjuna's API and the internal algorithms.
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