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feat: add (re)delegation getters (#11596)
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### Description

This PR adds general helper functions to the `x/staking` module that are used in the Evmos `x/vesting` module and originated from Agoric's custom staking module implementation https://github.com/agoric-labs/cosmos-sdk/blob/4085-true-vesting/x/staking/keeper/delegation.go.

- `GetDelegatorUnbonding`  
- `GetDelegatorBonded`
- `IterateDelegatorUnbondingDelegations`
- `IterateDelegatorDelegations`
- `IterateDelegatorRedelegations`
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@danburck
danburck authored Apr 12, 2022
1 parent 06c5d2b commit b8270fc
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17 changes: 9 additions & 8 deletions CHANGELOG.md
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* [#11179](https://github.com/cosmos/cosmos-sdk/pull/11179) Add state rollback command.
* [\#10794](https://github.com/cosmos/cosmos-sdk/pull/10794) ADR-040: Add State Sync to V2 Store
* [\#11234](https://github.com/cosmos/cosmos-sdk/pull/11234) Add `GRPCClient` field to Client Context. If `GRPCClient` field is set to nil, the `Invoke` method would use ABCI query, otherwise use gprc.
* [\#10962](https://github.com/cosmos/cosmos-sdk/pull/10962) ADR-040: Add state migration from iavl (v1Store) to smt (v2Store)
* [\#10962](https://github.com/cosmos/cosmos-sdk/pull/10962) ADR-040: Add state migration from iavl (v1Store) to smt (v2Store)
* (types) [\#10948](https://github.com/cosmos/cosmos-sdk/issues/10948) Add `app-db-backend` to the `app.toml` config to replace the compile-time `types.DBbackend` variable.
* (authz)[\#11060](https://github.com/cosmos/cosmos-sdk/pull/11060) Support grant with no expire time.

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* [\#10612](https://github.com/cosmos/cosmos-sdk/pull/10612) `baseapp.NewBaseApp` constructor function doesn't take the `sdk.TxDecoder` anymore. This logic has been moved into the TxDecoderMiddleware.
* [\#10692](https://github.com/cosmos/cosmos-sdk/pull/10612) `SignerData` takes 2 new fields, `Address` and `PubKey`, which need to get populated when using SIGN_MODE_DIRECT_AUX.
* [\#10748](https://github.com/cosmos/cosmos-sdk/pull/10748) Move legacy `x/gov` api to `v1beta1` directory.
* [\#10816](https://github.com/cosmos/cosmos-sdk/pull/10816) Reuse blocked addresses from the bank module. No need to pass them to distribution.
* [\#10816](https://github.com/cosmos/cosmos-sdk/pull/10816) Reuse blocked addresses from the bank module. No need to pass them to distribution.
* [\#10852](https://github.com/cosmos/cosmos-sdk/pull/10852) Move `x/gov/types` to `x/gov/types/v1beta2`.
* [\#10922](https://github.com/cosmos/cosmos-sdk/pull/10922), [/#10957](https://github.com/cosmos/cosmos-sdk/pull/10957) Move key `server.Generate*` functions to testutil and support custom mnemonics in in-process testing network. Moved `TestMnemonic` from `testutil` package to `testdata`.
* (x/bank) [\#10771](https://github.com/cosmos/cosmos-sdk/pull/10771) Add safety check on bank module perms to allow module-specific mint restrictions (e.g. only minting a certain denom).
Expand All @@ -153,7 +153,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
* (authz)[\#11060](https://github.com/cosmos/cosmos-sdk/pull/11060) `authz.NewMsgGrant` `expiration` is now a pointer. When `nil` is used then no expiration will be set (grant won't expire).
* (x/distribution)[\#11457](https://github.com/cosmos/cosmos-sdk/pull/11457) Add amount field to `distr.MsgWithdrawDelegatorRewardResponse` and `distr.MsgWithdrawValidatorCommissionResponse`.
* (x/auth/middleware) [#11413](https://github.com/cosmos/cosmos-sdk/pull/11413) Refactor tx middleware to be extensible on tx fee logic. Merged `MempoolFeeMiddleware` and `TxPriorityMiddleware` functionalities into `DeductFeeMiddleware`, make the logic extensible using the `TxFeeChecker` option, the current fee logic is preserved by the default `checkTxFeeWithValidatorMinGasPrices` implementation. Change `RejectExtensionOptionsMiddleware` to `NewExtensionOptionsMiddleware` which is extensible with the `ExtensionOptionChecker` option. Unpack the tx extension options `Any`s to interface `TxExtensionOptionI`.
* (migrations) [#1156](https://github.com/cosmos/cosmos-sdk/pull/11556#issuecomment-1091385011) Remove migration code from 0.42 and below. To use previous migrations, checkout previous versions of the cosmos-sdk.
* (migrations) [#1156](https://github.com/cosmos/cosmos-sdk/pull/11556#issuecomment-1091385011) Remove migration code from 0.42 and below. To use previous migrations, checkout previous versions of the cosmos-sdk.

### Client Breaking Changes

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* (types) [\#11200](https://github.com/cosmos/cosmos-sdk/pull/11200) Added `Min()` and `Max()` operations on sdk.Coins.
* (gov) [\#11287](https://github.com/cosmos/cosmos-sdk/pull/11287) Fix error message when no flags are provided while executing `submit-legacy-proposal` transaction.
* (x/auth) [\#11482](https://github.com/cosmos/cosmos-sdk/pull/11482) Improve panic message when attempting to register a method handler for a message that does not implement sdk.Msg
* (x/staking) [\#11596](https://github.com/cosmos/cosmos-sdk/pull/11596) Add (re)delegation getters

### Bug Fixes

* [\#11558](https://github.com/cosmos/cosmos-sdk/pull/11558) Fix `--dry-run` not working when using tx command.
* [\#11354](https://github.com/cosmos/cosmos-sdk/pull/11355) Added missing pagination flag for `bank q total` query.
* [\#11197](https://github.com/cosmos/cosmos-sdk/pull/11197) Signing with multisig now works with multisig address which is not in the keyring.
* [\#11197](https://github.com/cosmos/cosmos-sdk/pull/11197) Signing with multisig now works with multisig address which is not in the keyring.
* (makefile) [\#11285](https://github.com/cosmos/cosmos-sdk/pull/11285) Fix lint-fix make target.
* (client) [\#11283](https://github.com/cosmos/cosmos-sdk/issues/11283) Support multiple keys for tx simulation and setting automatic gas for txs.
* (store) [\#11177](https://github.com/cosmos/cosmos-sdk/pull/11177) Update the prune `everything` strategy to store the last two heights.
Expand Down Expand Up @@ -263,7 +264,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
* [#10763](https://github.com/cosmos/cosmos-sdk/pull/10763) modify the fields in `TallyParams` to use `string` instead of `bytes`
* [#10770](https://github.com/cosmos/cosmos-sdk/pull/10770) revert tx when block gas limit exceeded
* [\#10868](https://github.com/cosmos/cosmos-sdk/pull/10868) Bump gov to v1beta2. Both v1beta1 and v1beta2 queries and Msgs are accepted.
* [\#11011](https://github.com/cosmos/cosmos-sdk/pull/11011) Remove burning of deposits when qourum is not reached on a governance proposal and when the deposit is not fully met.
* [\#11011](https://github.com/cosmos/cosmos-sdk/pull/11011) Remove burning of deposits when qourum is not reached on a governance proposal and when the deposit is not fully met.
* [\#11019](https://github.com/cosmos/cosmos-sdk/pull/11019) Add `MsgCreatePermanentLockedAccount` and CLI method for creating permanent locked account
* (x/staking) [\#10885] (https://github.com/cosmos/cosmos-sdk/pull/10885) Add new `CancelUnbondingDelegation`
transaction to `x/staking` module. Delegators can now cancel unbonding delegation entry and delegate back to validator.
Expand Down Expand Up @@ -291,7 +292,7 @@ Ref: https://keepachangelog.com/en/1.0.0/

* [\#10561](https://github.com/cosmos/cosmos-sdk/pull/10561) The `CommitMultiStore` interface contains a new `SetIAVLCacheSize` method
* [\#10922](https://github.com/cosmos/cosmos-sdk/pull/10922), [/#10956](https://github.com/cosmos/cosmos-sdk/pull/10956) Deprecate key `server.Generate*` functions and move them to `testutil` and support custom mnemonics in in-process testing network. Moved `TestMnemonic` from `testutil` package to `testdata`.
* [\#11049](https://github.com/cosmos/cosmos-sdk/pull/11049) Add custom tendermint config variables into root command. Allows App developers to set config.toml variables.
* [\#11049](https://github.com/cosmos/cosmos-sdk/pull/11049) Add custom tendermint config variables into root command. Allows App developers to set config.toml variables.

### Features

Expand All @@ -310,7 +311,7 @@ Ref: https://keepachangelog.com/en/1.0.0/

### Bug Fixes

* (std/codec) [/#10595](https://github.com/cosmos/cosmos-sdk/pull/10595) Add evidence to std/codec to be able to decode evidence in client interactions.
* (std/codec) [/#10595](https://github.com/cosmos/cosmos-sdk/pull/10595) Add evidence to std/codec to be able to decode evidence in client interactions.
* (types) [\#9627](https://github.com/cosmos/cosmos-sdk/pull/9627) Fix nil pointer panic on `NewBigIntFromInt`.
* [#10725](https://github.com/cosmos/cosmos-sdk/pull/10725) populate `ctx.ConsensusParams` for begin/end blockers.
* [\#9829](https://github.com/cosmos/cosmos-sdk/pull/9829) Fixed Coin denom sorting not being checked during `Balance.Validate` check. Refactored the Validation logic to use `Coins.Validate` for `Balance.Coins`
Expand All @@ -320,7 +321,7 @@ Ref: https://keepachangelog.com/en/1.0.0/

### Improvements

* (baseapp) [\#10631](https://github.com/cosmos/cosmos-sdk/pull/10631) Emit ante events even for the failed txs.
* (baseapp) [\#10631](https://github.com/cosmos/cosmos-sdk/pull/10631) Emit ante events even for the failed txs.
* (store) [\#10741](https://github.com/cosmos/cosmos-sdk/pull/10741) Significantly speedup iterator creation after delete heavy workloads. Significantly improves IBC migration times.

### Bug Fixes
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