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CheckpointResource
The CheckpointResource can be installed on any Jigsaw server, to
periodically make sure that the latest configuration changes have been saved
persistently back to disk.
This resource will run its own thread, and after each
interval duration, will check that the whole
server configuration (ie the resource stores) are properly backed up to the
disk, that logs have been flushed and that latest changes to properties have
been saved in the appropriate properties file.
It is highly recommended that you install one instance of that resource in
your server's administration space, since it can prevent bad damages occurring
to your configuration if the server were to be stopped abruptly.
Inherits
The
CheckpointResource
class inherits from the following classes:
Attributes description
The CheckpointResource defines the following attributes:
interval
-
semantics
-
The interval between two checkpoints, given as a number of seconds.
-
type
-
This attribute is an editable
IntegerAttribute
-
default value
-
This attribute defaults to -1, which means that the check pointer
will never run.
priority
-
semantics
-
The priority of the thread used to run the check points.
-
type
-
This attribute is an editable
IntegerAttribute
-
default value
-
This attribute defaults to 2, and should not be changed unless you
know what you're doing !
flushlog
-
semantics
-
Should the log be flushed to disk on each check point ?
-
type
-
This attribute is an editable
BooleanAttribute
-
default value
-
This attribute defaults to false and should not be set to true
except for testing periods (the logger knows better then you when to flush
itself back to disk, in particular flushing it too often may degrade the
overall performances of Jigsaw).
flushprops (warning this attribute
is not currently implemented)
-
semantics
-
Should the properties be flushed on each check point ?
-
type
-
This attribute is an editable
BooleanAttribute
-
default value
-
This attribute defaults to false.
flushconfig
-
semantics
-
Should the configuration (ie resource stores) be flushed on each check point
?
-
type
-
This attribute is an editable
BooleanAttribute
-
default value
-
This attribute defaults to true.
Jigsaw Team
$Id: w3c.jigsaw.contrib.CheckpointResource.html,v 1.1 1997/01/28 08:10:16
abaird Exp $