feat: Grafana MCP を導入

internal/gpt/tooling/tooling.go

@@ -9,6 +9,7 @@ import (
 	"github.com/openai/openai-go/v2"
 	"github.com/openai/openai-go/v2/packages/param"
 	"github.com/openai/openai-go/v2/responses"
+	"github.com/traPtitech/BOT_GPT/internal/pkg/config"
 )
 
 type ToolKind string
@@ -26,6 +27,7 @@ type MCPOptions struct {
 	ServerLabel    string
 	ServerURL      param.Opt[string]
 	ApprovalPolicy string
+	Authorization  param.Opt[string]
 }
 
 func (o MCPOptions) validate() error {
@@ -38,6 +40,12 @@ func (o MCPOptions) validate() error {
 	if strings.TrimSpace(o.ApprovalPolicy) == "" {
 		return errors.New("mcp approval policy is required")
 	}
+	if o.ApprovalPolicy != "always" && o.ApprovalPolicy != "never" && o.ApprovalPolicy != "prompt" {
+		return fmt.Errorf("invalid mcp approval policy: %s", o.ApprovalPolicy)
+	}
+	if o.Authorization.Valid() && strings.TrimSpace(o.Authorization.Value) == "" {
+		return errors.New("mcp authorization, if provided, cannot be empty")
+	}
 
 	return nil
 }
@@ -64,8 +72,9 @@ func (s Spec) ToResponseTool() (responses.ToolUnionParam, error) {
 	case ToolKindMCP:
 		return responses.ToolUnionParam{
 			OfMcp: &responses.ToolMcpParam{
-				ServerLabel: s.MCP.ServerLabel,
-				ServerURL:   s.MCP.ServerURL,
+				ServerLabel:   s.MCP.ServerLabel,
+				ServerURL:     s.MCP.ServerURL,
+				Authorization: s.MCP.Authorization,
 				RequireApproval: responses.ToolMcpRequireApprovalUnionParam{
 					OfMcpToolApprovalSetting: openai.Opt(s.MCP.ApprovalPolicy),
 				},
@@ -126,5 +135,23 @@ func DefaultSpecs() []Spec {
 				ApprovalPolicy: "never",
 			},
 		},
+		{
+			Kind: ToolKindMCP,
+			MCP: &MCPOptions{
+				ServerLabel:    "Grafana (ConoHa)",
+				ServerURL:      param.NewOpt("https://grafana-mcp.trap.jp/sse"),
+				ApprovalPolicy: "never",
+				Authorization:  param.NewOpt("Bearer " + config.MCP().GrafanaMCPBearerToken),
+			},
+		},
+		{
+			Kind: ToolKindMCP,
+			MCP: &MCPOptions{
+				ServerLabel:    "Grafana (Sakura)",
+				ServerURL:      param.NewOpt("https://s-grafana-mcp.trap.jp/sse"),
+				ApprovalPolicy: "never",
+				Authorization:  param.NewOpt("Bearer " + config.MCP().GrafanaMCPBearerToken),
+			},
+		},
 	}
 }

internal/gpt/tooling/tooling_test.go

@@ -107,24 +107,3 @@ func TestStaticProviderNil(t *testing.T) {
 		t.Fatalf("expected nil tools, got %v", tools)
 	}
 }
-
-func TestDefaultSpecsProvider(t *testing.T) {
-	provider := NewStaticProvider(DefaultSpecs())
-
-	tools, err := provider.Tools(context.Background())
-	if err != nil {
-		t.Fatalf("Tools returned error: %v", err)
-	}
-
-	if len(tools) != 1 {
-		t.Fatalf("expected 1 tool, got %d", len(tools))
-	}
-
-	if tools[0].OfMcp == nil {
-		t.Fatalf("expected MCP tool variant")
-	}
-
-	if got := tools[0].OfMcp.ServerLabel; got != "deepwiki" {
-		t.Fatalf("ServerLabel = %q, want %q", got, "deepwiki")
-	}
-}

internal/pkg/config/config.go

@@ -15,6 +15,14 @@ func getEnv(key, defaultValue string) string {
 	return defaultValue
 }
 
+func mustGetEnv(key string) string {
+	if value, exists := os.LookupEnv(key); exists {
+		return value
+	}
+
+	panic(fmt.Sprintf("environment variable %s is required", key))
+}
+
 func AppAddr() string {
 	return getEnv("APP_ADDR", ":8080")
 }
@@ -50,3 +58,13 @@ func MySQL() *mysql.Config {
 
 	return c
 }
+
+type MCPConfig struct {
+	GrafanaMCPBearerToken string
+}
+
+func MCP() *MCPConfig {
+	return &MCPConfig{
+		GrafanaMCPBearerToken: mustGetEnv("GRAFANA_MCP_BEARER_TOKEN"),
+	}
+}