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https://issues.apache.org/jira/browse/TS-4523?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Ben Zakai updated TS-4523:
--------------------------------
Description:
I'd like to suggest an API change in the CPP API Transformation interface.
My own use case is that I'd like to be able to pause the transformation, handle
what I can from the file and release the buffered content before resuming and
releasing the rest of the data.
Basically what I'm trying to achieve:
Write data to file (up to a certain amount)
File analysis
Produce file data (and any leftovers) downstream
When the file size reaches a certain size limit I'd like to be able to pause
the transformation and produce all of its content downstream and then resume
the transformation.
API Changes:
TransformationPlugin.h:
/**
* Call this method if you wish to pause the transformation.
* Schedule the return value continuation to resume the transforamtion.
* If the continuation is scheduled and called after the transform is destroyed
it will
* won't do anything beyond cleanups.
* Note: You must schedule the continuation or destroy it (using TSContDestroy)
yourself,
* otherwise it will leak.
*/
TSCont pause();
Internally, the continuation wraps the "resumeCallback" static function:
static int resumeCallback(TSCont cont, TSEvent event, void *edata); /** Resume
callback*/
Thank you!
was:
I'd like to suggest an API change in the transformation plugin which will
enable us to pause/resume a transformation.
My own use case is that I'd like to write all the incoming data into a file
(for analysis) before producing it downstream, but I don't want the file to
reach a certain size limit (When content-length is present its not an issue of
course). Basically what I'm trying to achieve:
-Write all data to file
-File analysis
-Produce file data downstream
When the file size reaches a certain size limit I'd like to be able to pause
the transformation and produce all of its content downstream and then resume
the transformation.
> Add the ability to pause/resume data consumption in the CPP API
> ---------------------------------------------------------------
>
> Key: TS-4523
> URL: https://issues.apache.org/jira/browse/TS-4523
> Project: Traffic Server
> Issue Type: Improvement
> Components: Plugins
> Reporter: David Ben Zakai
> Assignee: Uri Shachar
> Fix For: 7.0.0
>
>
> I'd like to suggest an API change in the CPP API Transformation interface.
> My own use case is that I'd like to be able to pause the transformation,
> handle what I can from the file and release the buffered content before
> resuming and releasing the rest of the data.
> Basically what I'm trying to achieve:
> Write data to file (up to a certain amount)
> File analysis
> Produce file data (and any leftovers) downstream
> When the file size reaches a certain size limit I'd like to be able to pause
> the transformation and produce all of its content downstream and then resume
> the transformation.
> API Changes:
> TransformationPlugin.h:
> /**
> * Call this method if you wish to pause the transformation.
> * Schedule the return value continuation to resume the transforamtion.
> * If the continuation is scheduled and called after the transform is
> destroyed it will
> * won't do anything beyond cleanups.
> * Note: You must schedule the continuation or destroy it (using
> TSContDestroy) yourself,
> * otherwise it will leak.
> */
> TSCont pause();
> Internally, the continuation wraps the "resumeCallback" static function:
> static int resumeCallback(TSCont cont, TSEvent event, void *edata); /**
> Resume callback*/
> Thank you!
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