Open Closed key & metadata convention

[bnayae]

The motivation is to enable organizations to define their path & metadata semantics, yet to have a typed representation of this semantic. In order to keeping a strict convention within multiple teams within the organization.

This spec deals with two kinds of semantics:

• Stream name: dictate the stream name (for example environment, partition, shard)
• Deployment context: contextual information like which cluster/namespace the event created on and which one is handling the current execution (this one is related to a scenario when two different contexts synchronize their events)

What will be affected by this feature

• Builders
• Metadata
• Channels