[jira] Assigned: (SYNAPSE-580) Expose message size metrics from transports to mediation level (as message property)

["Ruwan Linton (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SYNAPSE-580?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ruwan Linton reassigned SYNAPSE-580:
------------------------------------

    Assignee: Hiranya Jayathilaka

> Expose message size metrics from transports to mediation level (as message property)
> ------------------------------------------------------------------------------------
>
>                 Key: SYNAPSE-580
>                 URL: https://issues.apache.org/jira/browse/SYNAPSE-580
>             Project: Synapse
>          Issue Type: New Feature
>          Components: Transports
>            Reporter: Eric Hubert
>            Assignee: Hiranya Jayathilaka
>
> To be able to analyse traffic it should be possible to write custom mediators which use exposed transport metrics which e.g. contain information about message sizes without having to go for an additional round of message serialization.
> Any code written on the mediation layer, something like:
> Parameter synEnvParam = messageContext.getConfiguration().getAxisConfiguration().getParameter(SynapseConstants.SYNAPSE_ENV);
> SynapseEnvironment synEnv = (SynapseEnvironment) synEnvParam.getValue();
> TemporaryData serialized = synEnv.createTemporaryData();
> OutputStream out = serialized.getOutputStream();
> try {
>     messageContext.getEnvelope().serialize(out);
> } finally {
>     out.close();
> }
> int messageSize = serialized.getLength(); 
> would add an additional overhead to the system. Instead any transport should expose metrics which can be correlated to actual messages, allowing mediation level code to access those metrics (e.g. as message context property).

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