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cosmos-sdk/proto
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Sai Kumar 5bde3686c4
feat: Cancel unbonding delegation entry (#10885) 
## Description


Closes: #577

This pull request contains `Canceling unbonding delegation entry` and `delegate back to previous validator`

### `Msg` Service
```protobuf=
package cosmos.staking.v1beta1;

service Msg {
    // CancelUnbondingDelegation
    rpc CancelUnbondingDelegation(MsgCancelUnbondingDelegation) returns (MsgCancelUnbondingDelegationResponse);
}

// MsgCancelUnbondingDelegation
message MsgCancelUnbondingDelegation {
  option (gogoproto.equal)           = false;
  option (gogoproto.goproto_getters) = false;

  string                   delegator_address = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
  string                   validator_address = 2 [(cosmos_proto.scalar) = "cosmos.AddressString"];
  cosmos.base.v1beta1.Coin amount            = 3 [(gogoproto.nullable) = false];
  // creation_height is the height which the unbonding took place.
  int64 creation_height = 4;
}

// MsgCancelUnbondingDelegationResponse
message MsgCancelUnbondingDelegationResponse{
}
```

### `Msg` Method Implementation
```go=
func (k msgServer) CancelUnbondingDelegation(goCtx context.Context, msg *types.MsgCancelUnbondingDelegation) (*types.MsgCancelUnbondingDelegationResponse, error) {
    /*
    // checking the unbonding delegation at creation_height 
         // get the unbonding delegations of delegatorAddress 
        if ubdEntry balance is equal to msg.Amount 
            remove the entry from ubd  
        else 
            update the specific entry with new balance
                
        if len(ubd.Entries) == 0 {
            k.RemoveUnbondingDelegation(ctx, ubd)
        } else {
            k.SetUnbondingDelegation(ctx, ubd)
        }
    */
    

    // update the delegation back to validator 
    // get validator
        validator, found := k.GetValidator(ctx, valAddr)
        if !found {
            return nil, types.ErrNoValidatorFound
        }

        // delegate the unbonding amount to validator back
        _, err = k.Keeper.Delegate(ctx, delegatorAddress, msg.Amount.Amount, types.Unbonding, validator, false)
        if err != nil {
            return nil, err
        }
    
    
        _, err := ms.Keeper.CancelUnbondingDelegation(ctx,delegatorAddress,validatorAddress,amount,creation_height)
        if err != nil {
            return nil, err 
        }


        return &types.MsgCancelUnbondingDelegationResponse{}, nil
}
```

#### `cli tx` Method
```bash=
simd tx staking cancel-unbond [validator-address] [amount] [creation_height] --from [user] --chain-id [chain-id]
Example: 
simd tx staking cancel-unbond cosmosvaloper1mqtyv4qux68r26mql2hjhgrvz72snjwpulq22m 100000stake 10280 --from test1 --chain-id test-chain
```

---

### 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)
2022-04-05 10:01:13 +00:00
..
cosmos feat: Cancel unbonding delegation entry (#10885) 2022-04-05 10:01:13 +00:00
tendermint feat: Add MsgSoftwareUpgrade and MsgCancelUpgrade (for new msgs-based gov proposals) (#11116) 2022-03-03 16:45:02 +01:00
buf.gen.gogo.yaml feat: full api module building alongside gogo proto files with buf schema registry support (#10669) 2022-01-06 14:57:55 -05:00
buf.gen.pulsar.yaml fix: messed up api proto-gen (#10902) 2022-01-11 07:36:56 +00:00
buf.lock feat: full api module building alongside gogo proto files with buf schema registry support (#10669) 2022-01-06 14:57:55 -05:00
buf.md docs: Improve markdownlint configuration (#11104) 2022-02-10 12:07:01 +00:00
buf.yaml feat: full api module building alongside gogo proto files with buf schema registry support (#10669) 2022-01-06 14:57:55 -05:00
README.md docs: Code blocks in SDK docs are broken (#11189) 2022-02-14 23:39:35 +01:00

README.md

Maintaining Cosmos SDK Proto Files

All of the Cosmos SDK proto files are defined here. This folder should be synced regularly with buf.build/cosmos/cosmos-sdk regularly by a maintainer by running buf push in this folder.

User facing documentation should not be placed here but instead goes in buf.md and in each protobuf package following the guidelines in https://docs.buf.build/bsr/documentation.