Expose message size metrics from transports to mediation level (as message
property)
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Key: SYNAPSE-580
URL: https://issues.apache.org/jira/browse/SYNAPSE-580
Project: Synapse
Issue Type: New Feature
Components: Transports
Reporter: Eric Hubert
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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