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The suggested Abstraction Layer requires an extension to the collectd internal protocol to allow for plugins to be dynamically added/removed.

Overview

The idea behind this wiki is to look at the use cases for an Agent REST API, in this case collectd, to help define and implement a REST API that will allow us to dynamically do the following with collectd:

* Enable/disable/or restart resource monitoring 

* Get values/notifications

* Get capabilities

* Get the list of metrics being collected

* Flush the list of metrics

* Set thresholds for resources

* Blacklist resources

* Support some sort of buffering mechanism, and should be able to configure

* Get the timing information for the agent and do aTiming sync if required.

Phase 1 in the diagram below represents the current collectd implementation. Phase 2 is what we want to enable.

Image Added

Usecases

Enable Plugin

Disable Plugin

Restart/Reload Plugin

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Reconfigure Plugin

Get Values

TODO

See Cache contents

Get the list of metrics being collected

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Heartbeat

Get Capabilities

TODO

Blacklist resources/meters

  TODO

Buffer

 TODO

Time Sync

 get the timing information for the agent and do aTiming sync if required.

TODO

Authentication

For OpenStack Integration – keystone will be used for Authentication

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