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https://issues.apache.org/activemq/browse/SMX4KNL-163?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jamie Goodyear updated SMX4KNL-163:
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Attachment: for-discussion-only.txt
Hi All,
I've attached a file "for-discussion-only.txt" for the purposes of discussing
the DefaultJDBCLock.
I used AMQ's DefaultDataLocker as a blue print for how to construct this
class. In AMQ the keepAlive function perfoms a service similar to SMX's Lock
interface lock(), I intend here for Main#lock() to call the
DefaultJDBCLock#lock() method continuously thereby maintaining a lock on the
Servicemix locking table.
To use the jdbc lock a user would have to include the following in their
system.properties file:
{noformat}
servicemix.lock=true
servicemix.lock.class=org.apache.servicemix.kernel.main.DefaultJDBCLock
servicemix.lock.jdbc.url=jdbc:derby://localhost:1527/sample
servicemix.lock.jdbc.driver=org.apache.derby.jdbc.ClientDriver
servicemix.lock.jdbc.user=user
servicemix.lock.jdbc.password=password
{noformat}
The mechanism for creating a SMX4 locking table and/or re-using another
application's locking table needs to be developed & tested.
> Provide default jdbc lock impl for master/slave deployments
> -----------------------------------------------------------
>
> Key: SMX4KNL-163
> URL: https://issues.apache.org/activemq/browse/SMX4KNL-163
> Project: ServiceMix Kernel
> Issue Type: New Feature
> Environment: All
> Reporter: Jamie Goodyear
> Assignee: Jamie Goodyear
> Fix For: 1.1.0
>
> Attachments: for-discussion-only.txt, smx4knl-163.txt
>
>
> Provide default jdbc lock impl for master/slave deployments.
> From note on SMX4KNL-106:
> By default, a file based locking mechanism is used. There is an interface
> that can be implemented to allow other locking mechanisms such as JDBC. This
> would require setting a system property for the class name of the lock (it
> can be done in etc/system.properties) and changing the shell script to add
> the needed jars to the boot classpath.
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