cosmos-sdk/store/rootmulti
Sai Kumar ea672d40f5
feat: state migration from IAVL to SMT (ADR-040) (#10962)
State migration from iavl to smt

This migration works on upgrade handler 
```go

app.registerUpgradeHandlers()


func (app *SimApp) registerUpgradeHandlers() {
	// This is the upgrade plan name we used in the gov proposal.
	upgradeName := "iavl-to-smt-upgrade"
	app.UpgradeKeeper.SetUpgradeHandler(upgradeName, func(ctx sdk.Context, plan upgradetypes.Plan, _ module.VersionMap) (module.VersionMap, error) {
	
	        fromVM := map[string]uint64{
			...
		}
		
	        err := store2.MigrateV2(iavlStore, v2Store)
                if err != nil {
                    return fromVM, err 
                }
		
		return app.mm.RunMigrations(ctx, app.configurator, fromVM)
	})
}
```



## Description

Closes: #XXXX



---

### Author Checklist

*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed

### Reviewers Checklist

*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed 
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)
2022-03-20 03:17:23 +00:00
..
dbadapter.go Merge PR #7265: Tendermint Block Pruning 2020-09-14 10:12:49 -04:00
proof.go feat: ADR-040: ICS-23 proofs for SMT store (#10015) 2022-02-22 12:22:06 +00:00
proof_test.go feat: add configurable iavl cache size (#10561) 2021-11-20 09:32:30 +00:00
snapshot_test.go feat: state migration from IAVL to SMT (ADR-040) (#10962) 2022-03-20 03:17:23 +00:00
store.go feat: state migration from IAVL to SMT (ADR-040) (#10962) 2022-03-20 03:17:23 +00:00
store_test.go feat!: Add hooks to allow app modules to add things to state-sync (#10961) 2022-02-24 16:17:11 +00:00