wire up loading of secretsmanager plugin, using renderer plugin as a model

pkg/plugins/backendplugin/grpcplugin/client_v2.go

@@ -12,6 +12,7 @@ import (
 	"github.com/grafana/grafana/pkg/infra/log"
 	"github.com/grafana/grafana/pkg/plugins/backendplugin"
 	"github.com/grafana/grafana/pkg/plugins/backendplugin/pluginextensionv2"
+	"github.com/grafana/grafana/pkg/plugins/backendplugin/secretsmanagerplugin"
 	"github.com/grafana/grafana/pkg/util/errutil"
 	"github.com/hashicorp/go-plugin"
 	"google.golang.org/grpc/codes"
@@ -24,6 +25,7 @@ type ClientV2 struct {
 	grpcplugin.DataClient
 	grpcplugin.StreamClient
 	pluginextensionv2.RendererPlugin
+	secretsmanagerplugin.SecretsManagerPlugin
 }
 
 func newClientV2(descriptor PluginDescriptor, logger log.Logger, rpcClient plugin.ClientProtocol) (pluginClient, error) {
@@ -52,6 +54,11 @@ func newClientV2(descriptor PluginDescriptor, logger log.Logger, rpcClient plugi
 		return nil, err
 	}
 
+	rawSecretsManager, err := rpcClient.Dispense("secretsmanager")
+	if err != nil {
+		return nil, err
+	}
+
 	c := ClientV2{}
 	if rawDiagnostics != nil {
 		if diagnosticsClient, ok := rawDiagnostics.(grpcplugin.DiagnosticsClient); ok {
@@ -83,12 +90,24 @@ func newClientV2(descriptor PluginDescriptor, logger log.Logger, rpcClient plugi
 		}
 	}
 
+	if rawSecretsManager != nil {
+		if secretsManagerPlugin, ok := rawSecretsManager.(secretsmanagerplugin.SecretsManagerPlugin); ok {
+			c.SecretsManagerPlugin = secretsManagerPlugin
+		}
+	}
+
 	if descriptor.startRendererFn != nil {
 		if err := descriptor.startRendererFn(descriptor.pluginID, c.RendererPlugin, logger); err != nil {
 			return nil, err
 		}
 	}
 
+	if descriptor.startSecretsmanagerFn != nil {
+		if err := descriptor.startSecretsmanagerFn(descriptor.pluginID, c.SecretsManagerPlugin, logger); err != nil {
+			return nil, err
+		}
+	}
+
 	return &c, nil
 }