feat: add minimum commission rate to x/staking (#27)

Makefile

@@ -9,9 +9,9 @@ BINDIR ?= $(GOPATH)/bin
 BUILDDIR ?= $(CURDIR)/build
 SIMAPP = ./simapp
 MOCKS_DIR = $(CURDIR)/tests/mocks
-HTTPS_GIT := https://github.com/cosmos/cosmos-sdk.git
+HTTPS_GIT := https://github.com/medibloc/cosmos-sdk.git
 DOCKER := $(shell which docker)
-DOCKER_BUF := $(DOCKER) run --rm -v $(CURDIR):/workspace --workdir /workspace bufbuild/buf
+DOCKER_BUF := $(DOCKER) run --rm -v $(CURDIR):/workspace --workdir /workspace bufbuild/buf:0.56.0
 
 export GO111MODULE = on
 
@@ -399,7 +399,7 @@ proto-lint:
 	@$(DOCKER_BUF) check lint --error-format=json
 
 proto-check-breaking:
-	@$(DOCKER_BUF) check breaking --against-input $(HTTPS_GIT)#branch=master
+	@$(DOCKER_BUF) check breaking --against-input $(HTTPS_GIT)#branch=v0.42-panacea
 
 
 TM_URL              = https://raw.githubusercontent.com/tendermint/tendermint/v0.34.0-rc6/proto/tendermint

docs/core/proto-docs.md

@@ -1437,7 +1437,7 @@ Query defines the gRPC querier service.
 
 | Method Name | Request Type | Response Type | Description | HTTP Verb | Endpoint |
 | ----------- | ------------ | ------------- | ------------| ------- | -------- |
-| `Balance` | [QueryBalanceRequest](#cosmos.bank.v1beta1.QueryBalanceRequest) | [QueryBalanceResponse](#cosmos.bank.v1beta1.QueryBalanceResponse) | Balance queries the balance of a single coin for a single account. | GET|/cosmos/bank/v1beta1/balances/{address}/{denom}|
+| `Balance` | [QueryBalanceRequest](#cosmos.bank.v1beta1.QueryBalanceRequest) | [QueryBalanceResponse](#cosmos.bank.v1beta1.QueryBalanceResponse) | Balance queries the balance of a single coin for a single account. | GET|/cosmos/bank/v1beta1/balances/{address}/by_denom|
 | `AllBalances` | [QueryAllBalancesRequest](#cosmos.bank.v1beta1.QueryAllBalancesRequest) | [QueryAllBalancesResponse](#cosmos.bank.v1beta1.QueryAllBalancesResponse) | AllBalances queries the balance of all coins for a single account. | GET|/cosmos/bank/v1beta1/balances/{address}|
 | `TotalSupply` | [QueryTotalSupplyRequest](#cosmos.bank.v1beta1.QueryTotalSupplyRequest) | [QueryTotalSupplyResponse](#cosmos.bank.v1beta1.QueryTotalSupplyResponse) | TotalSupply queries the total supply of all coins. | GET|/cosmos/bank/v1beta1/supply|
 | `SupplyOf` | [QuerySupplyOfRequest](#cosmos.bank.v1beta1.QuerySupplyOfRequest) | [QuerySupplyOfResponse](#cosmos.bank.v1beta1.QuerySupplyOfResponse) | SupplyOf queries the supply of a single coin. | GET|/cosmos/bank/v1beta1/supply/{denom}|
@@ -1711,6 +1711,9 @@ tags are stringified and the log is JSON decoded.
 | `gas_used` | [int64](#int64) |  | Amount of gas consumed by transaction. |
 | `tx` | [google.protobuf.Any](#google.protobuf.Any) |  | The request transaction bytes. |
 | `timestamp` | [string](#string) |  | Time of the previous block. For heights > 1, it's the weighted median of the timestamps of the valid votes in the block.LastCommit. For height == 1, it's genesis time. |
+| `events` | [tendermint.abci.Event](#tendermint.abci.Event) | repeated | Events defines all the events emitted by processing a transaction. Note, these events include those emitted by processing all the messages and those emitted from the ante handler. Whereas Logs contains the events, with additional metadata, emitted only by processing the messages.
+
+Since: cosmos-sdk 0.42.11, 0.44.5, 0.45 |
 
 
 
@@ -5207,6 +5210,7 @@ Params defines the parameters for the staking module.
 | `max_entries` | [uint32](#uint32) |  | max_entries is the max entries for either unbonding delegation or redelegation (per pair/trio). |
 | `historical_entries` | [uint32](#uint32) |  | historical_entries is the number of historical entries to persist. |
 | `bond_denom` | [string](#string) |  | bond_denom defines the bondable coin denomination. |
+| `min_commission_rate` | [string](#string) |  | min_commission_rate is the chain-wide minimum commission rate that a validator can charge their delegators |
 
 
 
@@ -9999,3 +10003,4 @@ that implements Misbehaviour interface expected by ICS-02
 | <a name="bool" /> bool |  | bool | boolean | boolean | bool | bool | boolean | TrueClass/FalseClass |
 | <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode | string | string | string | String (UTF-8) |
 | <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str | []byte | ByteString | string | String (ASCII-8BIT) |
+

proto/cosmos/staking/v1beta1/staking.proto

@@ -282,6 +282,12 @@ message Params {
   uint32 historical_entries = 4 [(gogoproto.moretags) = "yaml:\"historical_entries\""];
   // bond_denom defines the bondable coin denomination.
   string bond_denom         = 5 [(gogoproto.moretags) = "yaml:\"bond_denom\""];
+  // min_commission_rate is the chain-wide minimum commission rate that a validator can charge their delegators
+  string min_commission_rate = 6 [
+    (gogoproto.moretags)   = "yaml:\"min_commission_rate\"",
+    (gogoproto.customtype) = "github.com/cosmos/cosmos-sdk/types.Dec",
+    (gogoproto.nullable)   = false
+  ];
 }
 
 // DelegationResponse is equivalent to Delegation except that it contains a