From 5377dcd04bbdff0e19ddd33bcbf78b9bf14fb879 Mon Sep 17 00:00:00 2001
From: Benjamin Bollen <ben@monax.io>
Date: Tue, 31 Jan 2017 16:59:22 +0100
Subject: [PATCH] rpc: add AssertIsRPCResponse as marker method for restricting
implementation of interface to actual RPCResponse types
---
rpc/jsonrpc.go | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/rpc/jsonrpc.go b/rpc/jsonrpc.go
index 4a28c4b1..73cb0cb6 100644
--- a/rpc/jsonrpc.go
+++ b/rpc/jsonrpc.go
@@ -40,7 +40,9 @@ type (
// RPCResponse MUST follow the JSON-RPC specification for Response object
// reference: http://www.jsonrpc.org/specification#response_object
- RPCResponse interface{}
+ RPCResponse interface {
+ AssertIsRPCResponse() bool
+ }
// RPCResultResponse MUST NOT contain the error member if no error occurred
RPCResultResponse struct {
@@ -82,3 +84,15 @@ func NewRPCErrorResponse(id string, code int, message string) RPCResponse {
JSONRPC: "2.0",
})
}
+
+// AssertIsRPCResponse implements a marker method for RPCResultResponse
+// to implement the interface RPCResponse
+func (rpcResultResponse *RPCResultResponse) AssertIsRPCResponse() bool {
+ return true
+}
+
+// AssertIsRPCResponse implements a marker method for RPCErrorResponse
+// to implement the interface RPCResponse
+func (rpcErrorResponse *RPCErrorResponse) AssertIsRPCResponse() bool {
+ return true
+}
--
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