GSoC: nodewatcher v3

Hello all!

Thanks to this year’s GSoC, a lot of work has been done on nodewatcher v3 platform. It now has a better, modular monitoring agent that can run on OpenWrt-supported devices, with a new JSON-based output format that can be easily reused by other projects as well. The platform has been ported to the latest stable version of Django (1.6) together with all migrations and dependencies. Development environment setup now uses Docker and fig in order to make it very easy to dive into the code without having to battle with various dependencies.

The API for access to node configuration and monitoring data (registry API) has been much improved, with better, more usable querying capabilities and performance. During development we have discovered a bug with cascade deletions and  polymorphic models in Django. Node configuration editor based on the registry API now supports references between form models that have not yet been saved — this functionality enables configuration of bridge interfaces which are now also supported by the firmware generator. I have implemented type support in the datastream library for long-term monitoring data storage with a new type for storing graphs as datapoints. This enables nodewatcher v3 to use datastream to store how the network topology evolves over time.

All the code is available on GitHub in several repositories:

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