From 658be274eff1232b94859f5da4a846d3cdddce6f Mon Sep 17 00:00:00 2001
From: linuskendall <git@linuskendall.com>
Date: Sat, 19 Aug 2023 09:11:49 +0100
Subject: [PATCH] Added getVersion placeholder

Implementation of https://github.com/rpcpool/yellowstone-faithful/pull/38 on the multiepoch time.
---
 multiepoch-getVersion.go | 31 +++++++++++++++++++++++++++++++
 multiepoch.go            |  2 ++
 storage.go               |  5 +++++
 3 files changed, 38 insertions(+)
 create mode 100644 multiepoch-getVersion.go

diff --git a/multiepoch-getVersion.go b/multiepoch-getVersion.go
new file mode 100644
index 00000000..e3eaffca
--- /dev/null
+++ b/multiepoch-getVersion.go
@@ -0,0 +1,31 @@
+package main
+
+import (
+  "context"
+  "fmt"
+
+  "github.com/sourcegraph/jsonrpc2"
+)
+
+// @TODO make these values make sense
+func (ser *MultiEpoch) handleGetVersion(ctx context.Context, conn *requestContext, req *jsonrpc2.Request) (*jsonrpc2.Error, error) {
+  // taken from solana mainnet version reponse
+  var versionResponse GetVersionResponse
+  versionResponse.FeatureSet = 1879391783
+  versionResponse.SolanaCore = "1.14.23"
+  var err = conn.Reply(
+          ctx,
+          req.ID,
+          versionResponse,
+          func(m map[string]any) map[string]any {
+                  r := map[string]any{}
+                  r["feature-set"] = m["featureSet"]
+                  r["solana-core"] = m["solanaCore"]
+                  return r
+          },
+  )
+  if err != nil {
+          return nil, fmt.Errorf("failed to reply: %w", err)
+  }
+  return nil, nil
+}
diff --git a/multiepoch.go b/multiepoch.go
index 2cfbb9c6..0f9a99e1 100644
--- a/multiepoch.go
+++ b/multiepoch.go
@@ -355,6 +355,8 @@ func (ser *MultiEpoch) handleRequest(ctx context.Context, conn *requestContext,
 		return ser.handleGetTransaction(ctx, conn, req)
 	case "getSignaturesForAddress":
 		return ser.handleGetSignaturesForAddress(ctx, conn, req)
+  case "getVersion":
+    return ser.handleGetVersion(ctx, conn, req)
 	default:
 		return &jsonrpc2.Error{
 			Code:    jsonrpc2.CodeMethodNotFound,
diff --git a/storage.go b/storage.go
index 62b1493b..2d0d760c 100644
--- a/storage.go
+++ b/storage.go
@@ -125,6 +125,11 @@ type GetTransactionResponse struct {
 	Signatures  []solana.Signature `json:"-"` // TODO: enable this
 }
 
+type GetVersionResponse struct {
+  FeatureSet uint64 `json:"feature-set"`
+  SolanaCore string `json:"solana-core"`
+}
+
 func loadDataFromDataFrames(
 	firstDataFrame *ipldbindcode.DataFrame,
 	dataFrameGetter func(ctx context.Context, wantedCid cid.Cid) (*ipldbindcode.DataFrame, error),