Initial commit: smart contract templates for bash, go, python, and typescript

go/process.go

@@ -0,0 +1,100 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+)
+
+// =============================================================================
+// SMART CONTRACT IMPLEMENTATION - MODIFY THIS FILE
+// =============================================================================
+
+// Transaction represents the parsed transaction from the server.
+// Customize this struct to match your transaction payload structure.
+type Transaction struct {
+	Version string            `json:"version"`
+	Header  TransactionHeader `json:"header"`
+	Payload map[string]any    `json:"payload"`
+}
+
+// TransactionHeader contains transaction metadata from Dragonchain.
+type TransactionHeader struct {
+	Tag       string `json:"tag"`
+	DcId      string `json:"dc_id"`
+	TxnId     string `json:"txn_id"`
+	BlockId   string `json:"block_id"`
+	TxnType   string `json:"txn_type"`
+	Timestamp string `json:"timestamp"`
+	Invoker   string `json:"invoker"`
+}
+
+// ProcessResult is the result returned from the Process function.
+type ProcessResult struct {
+	Data          map[string]any
+	OutputToChain bool
+	Error         error
+}
+
+// Process is the main function that handles incoming transactions.
+// Implement your smart contract logic here.
+//
+// Parameters:
+//   - ctx: Context for cancellation and timeouts
+//   - txJSON: Raw transaction JSON string
+//   - envVars: Environment variables passed from the server
+//   - secrets: Secrets passed from the server (e.g., API keys, credentials)
+//
+// Returns:
+//   - ProcessResult containing the result data, whether to output to chain, and any error
+func Process(ctx context.Context, txJSON string, envVars, secrets map[string]string) ProcessResult {
+	// Parse the transaction JSON
+	var tx Transaction
+	if err := json.Unmarshal([]byte(txJSON), &tx); err != nil {
+		return ProcessResult{
+			Error: fmt.Errorf("failed to parse transaction: %w", err),
+		}
+	}
+
+	// ==========================================================================
+	// TODO: Implement your smart contract logic here
+	// ==========================================================================
+	//
+	// Example: Access transaction data
+	// txnId := tx.Header.TxnId
+	// txnType := tx.Header.TxnType
+	// payload := tx.Payload
+	//
+	// Example: Access environment variables
+	// scName := envVars["SMART_CONTRACT_NAME"]
+	// dcID := envVars["DRAGONCHAIN_ID"]
+	//
+	// Example: Access secrets
+	// apiKey := secrets["SC_SECRET_MY_API_KEY"]
+	//
+	// Example: Process based on payload action
+	// action, _ := tx.Payload["action"].(string)
+	// switch action {
+	// case "create":
+	//     // Handle create operation
+	// case "update":
+	//     // Handle update operation
+	// default:
+	//     return ProcessResult{Error: fmt.Errorf("unknown action: %s", action)}
+	// }
+
+	// Default implementation: echo back the transaction
+	result := map[string]any{
+		"status":         "processed",
+		"transaction_id": tx.Header.TxnId,
+		"txn_type":       tx.Header.TxnType,
+		"payload":        tx.Payload,
+		"message":        "Transaction processed successfully",
+	}
+
+	return ProcessResult{
+		Data:          result,
+		OutputToChain: true,
+		Error:         nil,
+	}
+}