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28 lines
896 B
Markdown
28 lines
896 B
Markdown
# 5. Deprecate setters in favor of functional options during initialization
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Date: 2021-07-20
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## Status
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Proposed
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## Context
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The Viper struct currently acts as a facade for reading, writing and watching configuration for changes.
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Some of the configuration parameters can be changed runtime using setters which often lead to issues
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with concurrent activities.
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## Decision
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Deprecate setters in favor of using functional options for configuring Viper when it's initialized.
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Drop setters in Viper 2.
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## Consequences
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Since Viper's interface is usually invoked from a lot of places,
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moving configuration to the place where it is initialized makes using Viper safer
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(ie. someone can't just randomly call `Set` when they are only supposed to call `Get*`).
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This change will also clarify what roles Viper can be used in and
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makes the separation of internal components easier based on these roles.
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