RuntimeVersion and GenesisHash are now fetched at the beginning instead on every transaction execution.

Author: markopoloparadox

documentation/src/installation.md

@@ -35,9 +35,9 @@ go get github.com/availproject/[email protected]
 ```bash
 # Creates a new project with name myproject
 go mod init myproject
-# Fetches Avail-GO SDK v0.2.0. This might not be the newest version so make sure to check out the latest github avail-go-sdk release.
+# Fetches Avail-GO SDK v0.2.1. This might not be the newest version so make sure to check out the latest github avail-go-sdk release.
 # Link to Github: https://github.com/availproject/avail-go-sdk/releases
-go get github.com/availproject/[email protected].0
+go get github.com/availproject/[email protected].1
 ```
 
 #### First Time Running

sdk/client.go

@@ -16,11 +16,13 @@ import (
 )
 
 type Client struct {
-	client   *http.Client
-	endpoint string
-	metadata *metadata.Metadata
-	Rpc      RPC
-	Call     RuntimeApi
+	client         *http.Client
+	endpoint       string
+	metadata       *metadata.Metadata
+	Rpc            RPC
+	Call           RuntimeApi
+	RuntimeVersion *prim.RuntimeVersion
+	GenesisHash    *prim.H256
 }
 
 func NewClient(endpoint string) *Client {
@@ -119,6 +121,22 @@ func (this *Client) InitMetadata(at prim.Option[prim.H256]) error {
 	return nil
 }
 
+func (this *Client) InitRuntimeVersion(at prim.Option[prim.H256]) error {
+	runtimeVersion, err := this.Rpc.State.GetRuntimeVersion(at)
+	if err != nil {
+		return err
+	}
+	this.RuntimeVersion = &runtimeVersion
+
+	genesisHash, err := this.Rpc.ChainSpec.V1GenesisHash()
+	if err != nil {
+		return err
+	}
+	this.GenesisHash = &genesisHash
+
+	return nil
+}
+
 func (this *Client) RequestWithRetry(method string, params string) (string, error) {
 	retryCount := 3
 	for {

sdk/sdk.go

@@ -18,10 +18,6 @@ type SDK struct {
 	Tx     transactions
 }
 
-func (this *SDK) UpdateMetadata(blockHash prim.Option[prim.H256]) error {
-	return this.Client.InitMetadata(blockHash)
-}
-
 func EnableLogging() {
 	// Set log level based on the environment variable
 	level, err := logrus.ParseLevel(os.Getenv("LOG_LEVEL"))
@@ -52,6 +48,11 @@ func NewSDKWithMetadata(endpoint string, metadataBlockHash prim.Option[prim.H256
 	if err := client.InitMetadata(metadataBlockHash); err != nil {
 		return SDK{}, err
 	}
+
+	if err := client.InitRuntimeVersion(metadataBlockHash); err != nil {
+		return SDK{}, err
+	}
+
 	return SDK{
 		Client: client,
 		Tx:     newTransactions(client),

sdk/transaction_options.go

@@ -44,10 +44,6 @@ func (this TransactionOptions) WithTip(value metadata.Balance) TransactionOption
 }
 
 func (this *TransactionOptions) ToPrimitive(client *Client, accountAddress string) (prim.Extra, prim.Additional, error) {
-	genesisHash, err := client.Rpc.ChainSpec.V1GenesisHash()
-	if err != nil {
-		return prim.Extra{}, prim.Additional{}, err
-	}
 	forkHash, err := client.Rpc.Chain.GetFinalizedHead()
 	if err != nil {
 		return prim.Extra{}, prim.Additional{}, err
@@ -58,15 +54,10 @@ func (this *TransactionOptions) ToPrimitive(client *Client, accountAddress strin
 	}
 	forkBlockNumber := header.Number
 
-	runtimeVersion, err := client.Rpc.State.GetRuntimeVersion(prim.None[prim.H256]())
-	if err != nil {
-		return prim.Extra{}, prim.Additional{}, err
-	}
-
 	additional := prim.Additional{
-		SpecVersion: runtimeVersion.SpecVersion,
-		TxVersion:   runtimeVersion.TxVersion,
-		GenesisHash: genesisHash,
+		SpecVersion: client.RuntimeVersion.SpecVersion,
+		TxVersion:   client.RuntimeVersion.TxVersion,
+		GenesisHash: *client.GenesisHash,
 		ForkHash:    forkHash,
 	}