basic provider fund locking implementation

proto/colinearcore/tx.proto

@@ -37,6 +37,7 @@ message MsgNewBidResponse {
 
 message MsgLockFunds {
   string creator = 1;
+  string amount = 2;
 }
 
 message MsgLockFundsResponse {

x/colinearcore/client/cli/tx_lock_funds.go

@@ -4,6 +4,7 @@ import (
 	"strconv"
 
 	"colinear/x/colinearcore/types"
+
 	"github.com/cosmos/cosmos-sdk/client"
 	"github.com/cosmos/cosmos-sdk/client/flags"
 	"github.com/cosmos/cosmos-sdk/client/tx"
@@ -14,9 +15,9 @@ var _ = strconv.Itoa(0)
 
 func CmdLockFunds() *cobra.Command {
 	cmd := &cobra.Command{
-		Use:   "lock-funds",
+		Use:   "lock-funds [amount in uCLR]",
 		Short: "Broadcast message lockFunds",
-		Args:  cobra.ExactArgs(0),
+		Args:  cobra.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) (err error) {
 
 			clientCtx, err := client.GetClientTxContext(cmd)
@@ -24,8 +25,11 @@ func CmdLockFunds() *cobra.Command {
 				return err
 			}
 
+			argAmount := args[0]
+
 			msg := types.NewMsgLockFunds(
 				clientCtx.GetFromAddress().String(),
+				argAmount,
 			)
 			if err := msg.ValidateBasic(); err != nil {
 				return err

x/colinearcore/keeper/msg_server_lock_funds.go

@@ -2,7 +2,10 @@ package keeper
 
 import (
 	"context"
+	"fmt"
+	"math/big"
 
+	"colinear/x/colinearcore/auctionconfig"
 	"colinear/x/colinearcore/types"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -11,8 +14,50 @@ import (
 func (k msgServer) LockFunds(goCtx context.Context, msg *types.MsgLockFunds) (*types.MsgLockFundsResponse, error) {
 	ctx := sdk.UnwrapSDKContext(goCtx)
 
-	// TODO
-	_ = ctx
+	senderAddr, err := sdk.AccAddressFromBech32(msg.Creator)
+	if err != nil {
+		return nil, fmt.Errorf("must be a bech32-formatted address: %s", msg.Creator)
+	}
+
+	lockedUsers, found := k.Keeper.GetLockedUsers(ctx)
+	if !found {
+		// initialize if not yet initialized
+		lockedUsers = types.LockedUsers{
+			Users: map[string]string{},
+		}
+		// return nil, errors.New("unable to get locked users")
+	}
+
+	required := big.NewInt(auctionconfig.ProviderMinLockedUClr)
+
+	paying := new(big.Int)
+	paying.SetString(msg.Amount, 10)
+
+	prevAmountS, ok := lockedUsers.Users[msg.Creator]
+	if !ok { // not found
+		prevAmountS = "0"
+	}
+	prevAmount := new(big.Int)
+	prevAmount.SetString(prevAmountS, 10)
+
+	// make sure that total amount after lock meets minimum required locked amount
+	totalAfterPay := new(big.Int)
+	totalAfterPay.Add(prevAmount, paying)
+	if totalAfterPay.Cmp(required) == -1 {
+		return nil, fmt.Errorf("final locked amount must be above minimum required (actual: %s)", totalAfterPay.String())
+	}
+
+	spendable := k.bank.SpendableCoins(ctx, senderAddr)
+	if spendable.AmountOf("uclr").BigInt().Cmp(paying) != -1 {
+		sendCoins := sdk.NewCoins(sdk.NewCoin("uclr", sdk.NewIntFromBigInt(paying)))
+		if err := k.bank.SendCoinsFromAccountToModule(ctx, senderAddr, types.ModuleName, sendCoins); err != nil {
+			return nil, fmt.Errorf("failed to lock %s CLR in bank module: %s", paying.String(), err)
+		}
+	} else {
+		return nil, fmt.Errorf("not enough balance to lock %s CLR (your balance: %s)", paying.String(), spendable.AmountOf("clr").String())
+	}
+
+	lockedUsers.Users[msg.Creator] = totalAfterPay.String()
 
 	return &types.MsgLockFundsResponse{}, nil
 }

x/colinearcore/types/message_lock_funds.go

@@ -9,9 +9,10 @@ const TypeMsgLockFunds = "lock_funds"
 
 var _ sdk.Msg = &MsgLockFunds{}
 
-func NewMsgLockFunds(creator string) *MsgLockFunds {
+func NewMsgLockFunds(creator string, amount string) *MsgLockFunds {
 	return &MsgLockFunds{
 		Creator: creator,
+		Amount:  amount,
 	}
 }
 

x/colinearcore/types/tx.pb.go

@@ -253,6 +253,7 @@ var xxx_messageInfo_MsgNewBidResponse proto.InternalMessageInfo
 
 type MsgLockFunds struct {
 	Creator string `protobuf:"bytes,1,opt,name=creator,proto3" json:"creator,omitempty"`
+	Amount  string `protobuf:"bytes,2,opt,name=amount,proto3" json:"amount,omitempty"`
 }
 
 func (m *MsgLockFunds) Reset()         { *m = MsgLockFunds{} }
@@ -295,6 +296,13 @@ func (m *MsgLockFunds) GetCreator() string {
 	return ""
 }
 
+func (m *MsgLockFunds) GetAmount() string {
+	if m != nil {
+		return m.Amount
+	}
+	return ""
+}
+
 type MsgLockFundsResponse struct {
 }
 
@@ -343,31 +351,31 @@ func init() {
 func init() { proto.RegisterFile("colinearcore/tx.proto", fileDescriptor_0c3854a2a9bba3b4) }
 
 var fileDescriptor_0c3854a2a9bba3b4 = []byte{
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 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -702,6 +710,13 @@ func (m *MsgLockFunds) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if len(m.Amount) > 0 {
+		i -= len(m.Amount)
+		copy(dAtA[i:], m.Amount)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.Amount)))
+		i--
+		dAtA[i] = 0x12
+	}
 	if len(m.Creator) > 0 {
 		i -= len(m.Creator)
 		copy(dAtA[i:], m.Creator)
@@ -831,6 +846,10 @@ func (m *MsgLockFunds) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovTx(uint64(l))
 	}
+	l = len(m.Amount)
+	if l > 0 {
+		n += 1 + l + sovTx(uint64(l))
+	}
 	return n
 }
 
@@ -1417,6 +1436,38 @@ func (m *MsgLockFunds) Unmarshal(dAtA []byte) error {
 			}
 			m.Creator = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Amount", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Amount = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipTx(dAtA[iNdEx:])