Cosmos Dev Series: Cosmos-SDK-based Blockchain Upgrade - x/gov

abci.go

// EndBlocker called every block, process inflation, update validator set.
func EndBlocker(ctx sdk.Context, keeper keeper.Keeper) {
    keeper.IterateActiveProposalsQueue(ctx, ctx.BlockHeader().Time, func(proposal types.Proposal) bool {
        passes, burnDeposits, tallyResults := keeper.Tally(ctx, proposal)
        ...
      
        if passes {
            handler := keeper.Router().GetRoute(proposal.ProposalRoute())
            cacheCtx, writeCache := ctx.CacheContext()
            err := handler(cacheCtx, proposal.GetContent())
            if err == nil {
                ...
                
                // write state to the underlying multi-store
                writeCache()
            }
            ...
        }
        ...
    }
}