Date: 2004-07-12T20:34:11
Editor: DavidCrossley <[EMAIL PROTECTED]>
Wiki: Cocoon Wiki
Page: Scheduler
URL: http://wiki.apache.org/cocoon/Scheduler
remove an old link
Change Log:
------------------------------------------------------------------------------
@@ -1,5 +1,3 @@
-(Not to be confused with WyonaScheduler)
-
The Cocoon Scheduler is a recently-added component, which uses the Avalon
Cornerstone scheduler. It allows you do to anything at a specific interval or
at a certain time every day, week, month, etc, much like the cron daemon. It
currently lives in the 2.1-dev scratchpad.
== Starting Out ==
@@ -9,48 +7,48 @@
Third, you must make some changes to your {{{WEB-INF/cocoon.xconf}}} file.
Add the following lines to the bottom of the file, inside the closing
{{{</cocoon>}}} tag:
-{{{
-<!-- This is the cornerstone scheduler -->
-<component
role="org.apache.avalon.cornerstone.services.scheduler.TimeScheduler"
-
class="org.apache.cocoon.components.scheduler.DefaultTimeScheduler"/>
-
-<!-- This is the cornerstone thread manager -->
-<component role="org.apache.avalon.cornerstone.services.threads.ThreadManager"
- class="org.apache.cocoon.components.scheduler.DefaultThreadManager">
- <thread-group>
- <name>default</name>
- </thread-group>
-</component>
-
-<!-- This is an extended cocoon scheduler -->
-<component role="org.apache.cocoon.components.scheduler.Scheduler"
- class="org.apache.cocoon.components.scheduler.DefaultScheduler">
- <triggers>
- <!-- This is a sample trigger -->
- <trigger name="aggregatorTrigger"
-
target="org.apache.avalon.cornerstone.services.scheduler.Target/aggy">
- <timed type="periodic">
- <period>10000</period> <!-- ms, e.g. 10 seconds -->
- </timed>
- </trigger>
- </triggers>
-</component>
-
-<!-- This is a sample target, that is called as configured in the sample above
-->
-
-<component role="org.apache.avalon.cornerstone.services.scheduler.Target/aggy"
- class="org.apache.cocoon.components.scheduler.TestTarget"/>
+{{{
+<!-- This is the cornerstone scheduler -->
+<component
role="org.apache.avalon.cornerstone.services.scheduler.TimeScheduler"
+
class="org.apache.cocoon.components.scheduler.DefaultTimeScheduler"/>
+
+<!-- This is the cornerstone thread manager -->
+<component role="org.apache.avalon.cornerstone.services.threads.ThreadManager"
+ class="org.apache.cocoon.components.scheduler.DefaultThreadManager">
+ <thread-group>
+ <name>default</name>
+ </thread-group>
+</component>
+
+<!-- This is an extended cocoon scheduler -->
+<component role="org.apache.cocoon.components.scheduler.Scheduler"
+ class="org.apache.cocoon.components.scheduler.DefaultScheduler">
+ <triggers>
+ <!-- This is a sample trigger -->
+ <trigger name="aggregatorTrigger"
+
target="org.apache.avalon.cornerstone.services.scheduler.Target/aggy">
+ <timed type="periodic">
+ <period>10000</period> <!-- ms, e.g. 10 seconds -->
+ </timed>
+ </trigger>
+ </triggers>
+</component>
+
+<!-- This is a sample target, that is called as configured in the sample above
-->
+
+<component role="org.apache.avalon.cornerstone.services.scheduler.Target/aggy"
+ class="org.apache.cocoon.components.scheduler.TestTarget"/>
}}}
Now, restart your servlet container of choice, and check it's STDOUT. In
Tomcat you probably want {{{$TOMCAT_HOME/logs/stdout.log}}}. Once everything
has started, you should now notice a message popping up every ten seconds:
-{{{
-Target aggregatorTrigger triggered at Mon Aug 25 01:21:16 CDT 2003
-Target aggregatorTrigger triggered at Mon Aug 25 01:21:26 CDT 2003
-Target aggregatorTrigger triggered at Mon Aug 25 01:21:36 CDT 2003
-Target aggregatorTrigger triggered at Mon Aug 25 01:21:46 CDT 2003
-Target aggregatorTrigger triggered at Mon Aug 25 01:21:56 CDT 2003
-Target aggregatorTrigger triggered at Mon Aug 25 01:22:06 CDT 2003
+{{{
+Target aggregatorTrigger triggered at Mon Aug 25 01:21:16 CDT 2003
+Target aggregatorTrigger triggered at Mon Aug 25 01:21:26 CDT 2003
+Target aggregatorTrigger triggered at Mon Aug 25 01:21:36 CDT 2003
+Target aggregatorTrigger triggered at Mon Aug 25 01:21:46 CDT 2003
+Target aggregatorTrigger triggered at Mon Aug 25 01:21:56 CDT 2003
+Target aggregatorTrigger triggered at Mon Aug 25 01:22:06 CDT 2003
}}}
Obviously, this is a very basic example, and a more complicated example could
involve periodic file downloading, user management, database operations, etc.
@@ -67,14 +65,14 @@
The following trigger will wait 2 seconds before triggering, and then trigger
every 10 seconds afterwards:
-{{{
-<trigger name="test"
- target="org.apache.avalon.cornerstone.services.scheduler.Target/test">
- <timed type="periodic">
- <offset>2000</offset>
- <period>10000</period> <!-- ms, e.g. 10 seconds -->
- </timed>
-</trigger>
+{{{
+<trigger name="test"
+ target="org.apache.avalon.cornerstone.services.scheduler.Target/test">
+ <timed type="periodic">
+ <offset>2000</offset>
+ <period>10000</period> <!-- ms, e.g. 10 seconds -->
+ </timed>
+</trigger>
}}}
@@ -96,18 +94,18 @@
'''is!DayOfWeek''': set to {{{true}}} if you want '''day''' to represent the
day of the week (1-7), otherwise, set to {{{false}}} to represent the day of
the month (1-31).
-{{{
-<trigger name="test"
- target="org.apache.avalon.cornerstone.services.scheduler.Target/test">
- <timed type="cron">
- <minute>34</minute>
- <hour>11</hour>
- <month>-1</month>
- <year>-1</year>
- <day>-1</day>
- <isDayOfWeek>true</isDayOfWeek>
- </timed>
-</trigger>
+{{{
+<trigger name="test"
+ target="org.apache.avalon.cornerstone.services.scheduler.Target/test">
+ <timed type="cron">
+ <minute>34</minute>
+ <hour>11</hour>
+ <month>-1</month>
+ <year>-1</year>
+ <day>-1</day>
+ <isDayOfWeek>true</isDayOfWeek>
+ </timed>
+</trigger>
}}}
=== Coming Soon: Creating your own trigger target. ===
