Description

This PR is a proposal to remove the dependency that exists between x/distribution and x/protocolpool.

Main changes:

x/distribution does not require x/protocolpool anymore, it sends a simple bank send to a predefined x/protocolpool account. This is an "intermediary" account, that its only purpose is to hold this tokens until they get distributed by x/protocolpool (otherwise it's difficult to know how many tokens were added to be distributed).
x/protocolpool now has its own BeginBlocker where it takes the funds from the intermediary account and sends them to community pool and the stream account.
x/distribution uses the bank module to interact with x/protocolpool (there are a couple of instances in which it does a send "impersonating" x/protocolpool, but those are deprecated endpoints).

Before: x/distr would make a bank send to the community pool and also call SetToDistribute (because we needed to know how many tokens there were to distribute).

graph TD
    A[ABCI BeginBlock] --> B[x/distr Module]
    B --> C[x/bank Send to x/protocolpool]
    C --> D[x/protocolpool SetToDistribute]
    D --> E[End]

After this PR: x/distribution does a simple bank send to an intermediary account held by protocol pool (pool_distr), which then in its own BeginBlock x/protocolpool will distribute accordingly. x/distribution knows nothing other than the name of the intermediary account.

graph TD
    A[ABCI BeginBlock] --> B[x/distribution's BeginBlock]
    B --> C[Bank Send to <b>pool_distr</b> Intermediary Account]

    A --> D[x/protocolpool's BeginBlock]
    D --> E[Distribute Funds from <b>pool_distr</b>]
    E --> G[Community Pool]
    E --> H[Stream Account]

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cosmos / cosmos-sdk

feat(x/protocolpool,x/distribution)!: remove dependency #20790

Description

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