NewPodConfig creates an object that can merge many configuration sources into a stream of normalized updates to a pod configuration.

NewSourceEtcd creates a config source that watches and pulls from a key in etcd.

PodConfigNotificationIncremental delivers ADD, UPDATE, and REMOVE to the update channel.

PodConfigNotificationSnapshot delivers the full configuration as a SET whenever any change occurs.

PodConfigNotificationSnapshotAndUpdates delivers an UPDATE message whenever pods are changed, and a SET message if there are any additions or removals.

PodConfig is a configuration mux that merges many sources of pod configuration into a single consistent structure, and then delivers incremental change notifications to listeners in order.

PodConfigNotificationMode describes how changes are sent to the update channel.