Add Influxdb backend to JMeter

[max3163]

Add a new backend listener to send data to InfluxDB server. InfluxDB is a time series database built to handle high write and query loads.

This backend write data with the HTTP API based on the influxdb line protocol.
See :
HTTP API
Line protocol reference

Syntax example :
<measurement>[,<tag_key>=<tag_value>[,<tag_key>=<tag_value>]] <field_key>=<field_value>[,<field_key>=<field_value>] [<timestamp>]

At the start and the end of a JMeter test, the backend add automaticaly two annotations in the annotation measurement for a better usage with Grafana ( See grafana documentation

[pmouawad]

Hello,
Thanks for contribution.
I have few remarks on implementation:

• You intentionally don't set timestamp. I am not sure it's a good idea as if any delay occurs sending to InfluxDB, measurement will be wrong, and there is another reason, see next remark
• I think HttpAsyncClient (https://hc.apache.org/httpcomponents-asyncclient-dev/quickstart.html) might be a good use case here as we don't care about responses and we don't want to block too much, so we could use it here. But in this case we would need to add timestamp.
• I think you should allow some configuration for technical things like timeouts. InfluxdbMetricsSender#setup should have a more flexible parameter like Map to allow passing more parameters

Also would it be possible to provide:

• A Simple Test plan using the component
• If possible some documentation

I have already made some changes to PR, I could commit it as is and mark component as Alpha, we could distribute with next release and improve it either before or later.
@Team what do you think ?

[mtomlins]

I use an AsyncHTTP thread pool to send to InfluxDB from a custom listener. Works very well.

…

Sent from my iPhone

On Jan 15, 2017, at 10:33 AM, Philippe M ***@***.***> wrote: Hello, Thanks for contribution. I have few remarks on implementation: You intentionally don't set timestamp. I am not sure it's a good idea as if any delay occurs sending to InfluxDB, measurement will be wrong, and there is another reason, see next remark I think HttpAsyncClient (https://hc.apache.org/httpcomponents-asyncclient-dev/quickstart.html) might be a good use case here as we don't care about responses and we don't want to block too much, so we could use it here. But in this case we would need to add timestamp. I think you should allow some configuration for technical things like timeouts. InfluxdbMetricsSender#setup should have a more flexible parameter like Map to allow passing more parameters Also would it be possible to provide: A Simple Test plan using the component If possible some documentation I have already made some changes to PR, I could commit it as is and mark component as Alpha, we could distribute with next release and improve it either before or later. @Team what do you think ? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or mute the thread.

[pmouawad]

Hi Mark,
Good to know.
Are you using Apache HttpAsyncClient or something else ?
Do you agree with my proposals ?
Thanks