Add btc network fee query

docs/static/openapi.yml

@@ -51956,6 +51956,222 @@ paths:
           type: string
       tags:
         - Query
+  /side/btcbridge/withdrawal/fee:
+    get:
+      summary: QueryWithdrawNetworkFee queries the bitcoin network fee for withdrawal.
+      operationId: SideBtcbridgeQueryWithdrawNetworkFee
+      responses:
+        '200':
+          description: A successful response.
+          schema:
+            type: object
+            properties:
+              fee:
+                type: string
+                format: int64
+            description: >-
+              QueryWithdrawNetworkFeeResponse is response type for the
+              Query/WithdrawNetworkFee RPC method.
+        default:
+          description: An unexpected error response.
+          schema:
+            type: object
+            properties:
+              code:
+                type: integer
+                format: int32
+              message:
+                type: string
+              details:
+                type: array
+                items:
+                  type: object
+                  properties:
+                    '@type':
+                      type: string
+                      description: >-
+                        A URL/resource name that uniquely identifies the type of
+                        the serialized
+
+                        protocol buffer message. This string must contain at
+                        least
+
+                        one "/" character. The last segment of the URL's path
+                        must represent
+
+                        the fully qualified name of the type (as in
+
+                        `path/google.protobuf.Duration`). The name should be in
+                        a canonical form
+
+                        (e.g., leading "." is not accepted).
+
+
+                        In practice, teams usually precompile into the binary
+                        all types that they
+
+                        expect it to use in the context of Any. However, for
+                        URLs which use the
+
+                        scheme `http`, `https`, or no scheme, one can optionally
+                        set up a type
+
+                        server that maps type URLs to message definitions as
+                        follows:
+
+
+                        * If no scheme is provided, `https` is assumed.
+
+                        * An HTTP GET on the URL must yield a
+                        [google.protobuf.Type][]
+                          value in binary format, or produce an error.
+                        * Applications are allowed to cache lookup results based
+                        on the
+                          URL, or have them precompiled into a binary to avoid any
+                          lookup. Therefore, binary compatibility needs to be preserved
+                          on changes to types. (Use versioned type names to manage
+                          breaking changes.)
+
+                        Note: this functionality is not currently available in
+                        the official
+
+                        protobuf release, and it is not used for type URLs
+                        beginning with
+
+                        type.googleapis.com.
+
+
+                        Schemes other than `http`, `https` (or the empty scheme)
+                        might be
+
+                        used with implementation specific semantics.
+                  additionalProperties: {}
+                  description: >-
+                    `Any` contains an arbitrary serialized protocol buffer
+                    message along with a
+
+                    URL that describes the type of the serialized message.
+
+
+                    Protobuf library provides support to pack/unpack Any values
+                    in the form
+
+                    of utility functions or additional generated methods of the
+                    Any type.
+
+
+                    Example 1: Pack and unpack a message in C++.
+
+                        Foo foo = ...;
+                        Any any;
+                        any.PackFrom(foo);
+                        ...
+                        if (any.UnpackTo(&foo)) {
+                          ...
+                        }
+
+                    Example 2: Pack and unpack a message in Java.
+
+                        Foo foo = ...;
+                        Any any = Any.pack(foo);
+                        ...
+                        if (any.is(Foo.class)) {
+                          foo = any.unpack(Foo.class);
+                        }
+
+                     Example 3: Pack and unpack a message in Python.
+
+                        foo = Foo(...)
+                        any = Any()
+                        any.Pack(foo)
+                        ...
+                        if any.Is(Foo.DESCRIPTOR):
+                          any.Unpack(foo)
+                          ...
+
+                     Example 4: Pack and unpack a message in Go
+
+                         foo := &pb.Foo{...}
+                         any, err := anypb.New(foo)
+                         if err != nil {
+                           ...
+                         }
+                         ...
+                         foo := &pb.Foo{}
+                         if err := any.UnmarshalTo(foo); err != nil {
+                           ...
+                         }
+
+                    The pack methods provided by protobuf library will by
+                    default use
+
+                    'type.googleapis.com/full.type.name' as the type URL and the
+                    unpack
+
+                    methods only use the fully qualified type name after the
+                    last '/'
+
+                    in the type URL, for example "foo.bar.com/x/y.z" will yield
+                    type
+
+                    name "y.z".
+
+
+
+                    JSON
+
+                    ====
+
+                    The JSON representation of an `Any` value uses the regular
+
+                    representation of the deserialized, embedded message, with
+                    an
+
+                    additional field `@type` which contains the type URL.
+                    Example:
+
+                        package google.profile;
+                        message Person {
+                          string first_name = 1;
+                          string last_name = 2;
+                        }
+
+                        {
+                          "@type": "type.googleapis.com/google.profile.Person",
+                          "firstName": <string>,
+                          "lastName": <string>
+                        }
+
+                    If the embedded message type is well-known and has a custom
+                    JSON
+
+                    representation, that representation will be embedded adding
+                    a field
+
+                    `value` which holds the custom JSON in addition to the
+                    `@type`
+
+                    field. Example (for message [google.protobuf.Duration][]):
+
+                        {
+                          "@type": "type.googleapis.com/google.protobuf.Duration",
+                          "value": "1.212s"
+                        }
+      parameters:
+        - name: sender
+          in: query
+          required: false
+          type: string
+        - name: amount
+          in: query
+          required: false
+          type: string
+        - name: fee_rate
+          in: query
+          required: false
+          type: string
+      tags:
+        - Query
   /side/btcbridge/withdrawal/request:
     get:
       summary: >-
@@ -83279,6 +83495,15 @@ definitions:
               title: rune balances associated with the UTXO
           title: Bitcoin UTXO
     description: QueryUTXOsResponse is the response type for the Query/UTXOs RPC method.
+  side.btcbridge.QueryWithdrawNetworkFeeResponse:
+    type: object
+    properties:
+      fee:
+        type: string
+        format: int64
+    description: >-
+      QueryWithdrawNetworkFeeResponse is response type for the
+      Query/WithdrawNetworkFee RPC method.
   side.btcbridge.QueryWithdrawRequestByTxHashResponse:
     type: object
     properties:

proto/side/btcbridge/query.proto

@@ -39,6 +39,10 @@ service Query {
   rpc QueryWithdrawRequestByTxHash(QueryWithdrawRequestByTxHashRequest) returns (QueryWithdrawRequestByTxHashResponse) {
     option (google.api.http).get = "/side/btcbridge/withdrawal/request/tx/{txid}";
   }
+  // QueryWithdrawNetworkFee queries the bitcoin network fee for withdrawal.
+  rpc QueryWithdrawNetworkFee(QueryWithdrawNetworkFeeRequest) returns (QueryWithdrawNetworkFeeResponse) {
+    option (google.api.http).get = "/side/btcbridge/withdrawal/fee";
+  }
   // QueryUTXOs queries all utxos.
   rpc QueryUTXOs(QueryUTXOsRequest) returns (QueryUTXOsResponse) {
     option (google.api.http).get = "/side/btcbridge/utxos";
@@ -99,6 +103,18 @@ message QueryWithdrawRequestByTxHashResponse {
   BitcoinWithdrawRequest request = 1;
 }
 
+// QueryWithdrawNetworkFeeRequest is request type for the Query/WithdrawNetworkFee RPC method.
+message QueryWithdrawNetworkFeeRequest {
+  string sender = 1;
+  string amount = 2;
+  string fee_rate = 3;
+}
+
+// QueryWithdrawNetworkFeeResponse is response type for the Query/WithdrawNetworkFee RPC method.
+message QueryWithdrawNetworkFeeResponse {
+  int64 fee = 1;
+}
+
 // QueryParamsRequest is request type for the Query/Params RPC method.
 message QueryParamsRequest {}
 

x/btcbridge/keeper/queries.go

@@ -2,6 +2,7 @@ package keeper
 
 import (
 	"context"
+	"strconv"
 
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
@@ -108,6 +109,35 @@ func (k Keeper) QueryWithdrawRequestByTxHash(goCtx context.Context, req *types.Q
 	return &types.QueryWithdrawRequestByTxHashResponse{Request: request}, nil
 }
 
+func (k Keeper) QueryWithdrawNetworkFee(goCtx context.Context, req *types.QueryWithdrawNetworkFeeRequest) (*types.QueryWithdrawNetworkFeeResponse, error) {
+	if req == nil {
+		return nil, status.Error(codes.InvalidArgument, "invalid request")
+	}
+	ctx := sdk.UnwrapSDKContext(goCtx)
+
+	amount, err := sdk.ParseCoinNormalized(req.Amount)
+	if err != nil {
+		return nil, err
+	}
+
+	feeRate, err := strconv.ParseInt(req.FeeRate, 10, 64)
+	if err != nil {
+		return nil, types.ErrInvalidFeeRate
+	}
+
+	withdrawReq, err := k.NewWithdrawRequest(ctx, req.Sender, amount, feeRate)
+	if err != nil {
+		return nil, err
+	}
+
+	fee, err := k.getBtcNetworkFee(ctx, withdrawReq.Psbt)
+	if err != nil {
+		return nil, err
+	}
+
+	return &types.QueryWithdrawNetworkFeeResponse{Fee: fee.Amount.Int64()}, nil
+}
+
 func (k Keeper) QueryUTXOs(goCtx context.Context, req *types.QueryUTXOsRequest) (*types.QueryUTXOsResponse, error) {
 	if req == nil {
 		return nil, status.Error(codes.InvalidArgument, "invalid request")