feat(config): Implement notification system for Config #517
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I want cloud-init & landscape to be pinged by the config every time something changes. However, I don't want these two utilities to be dependencies of config. If anything, I want the dependency the other way around! Cloud-init and Landscape should import config.
So I must somehow call these utilities from the config without importing them. My solution: callbacks. Any utility can now wait on config changes by using:
and this function will be called every time the config is changed (via GUI, registry, or any future methods).
This is used in Landscape #515 and Cloud-init #506.