Production MCP integration for Golem #275

go-mcp-integration.go

@@ -0,0 +1,76 @@
+package mcp
+
+import (
+    "encoding/json"
+    "fmt"
+    "net"
+    "time"
+)
+
+// MCPClient is a minimal client to establish a handshake with an MCP server.
+type MCPClient struct {
+    Server  string
+    Conn    net.Conn
+    Timeout time.Duration
+}
+
+// NewMCPClient creates a new MCPClient for the given server address.
+func NewMCPClient(server string) *MCPClient {
+    return &MCPClient{Server: server, Timeout: 5 * time.Second}
+}
+
+// Handshake performs a simple heartbeat with the MCP server.
+func (c *MCPClient) Handshake() error {
+    conn, err := net.DialTimeout("tcp", c.Server, c.Timeout)
+    if err != nil {
+        return err
+    }
+    c.Conn = conn
+    payload := map[string]string{"type": "handshake", "version": "v1"}
+    b, _ := json.Marshal(payload)
+    if _, err := conn.Write(append(b, n)); err != nil {
+        return err
+    }
+    // read response
+    buf := make([]byte, 4096)
+    n, err := conn.Read(buf)
+    if err != nil {
+        return err
+    }
+    var resp map[string]interface{}
+    if err := json.Unmarshal(buf[:n], &resp); err != nil {
+        return err
+    }
+    if status, ok := resp["status"].(string); ok && status == "ok" {
+        return nil
+    }
+    return fmt.Errorf("handshake failed: %v", resp)
+}
+
+// SendRequest sends a generic request to MCP server.
+func (c *MCPClient) SendRequest(req interface{}) error {
+    if c.Conn == nil {
+        return fmt.Errorf("no MCP connection")
+    }
+    b, _ := json.Marshal(req)
+    _, err := c.Conn.Write(append(b, n))
+    return err
+}
+
+// Close closes the MCP connection.
+func (c *MCPClient) Close() {
+    if c.Conn != nil {
+        c.Conn.Close()
+        c.Conn = nil
+    }
+}
+
+// Example usage placeholder: initialize connection.
+func MCPInit(server string) (*MCPClient, error) {
+    c := NewMCPClient(server)
+    if err := c.Handshake(); err != nil {
+        return nil, err
+    }
+    return c, nil
+}
+