add tls connect options

mongodb.go

@@ -7,10 +7,41 @@ import (
 	"github.com/logrusorgru/aurora"
 	"go.mongodb.org/mongo-driver/mongo"
 	"go.mongodb.org/mongo-driver/mongo/options"
+	"go.mongodb.org/mongo-driver/mongo/readpref"
 )
 
+// ConnectTLSOpts ...
+type ConnectTLSOpts struct {
+	Host                       string
+	DBName                     string
+	ReplSet                    string
+	CaFilePath                 string
+	CertificateKeyFilePath     string
+	CertificateKeyFilePassword string
+}
+
 var db *mongo.Database
 
+// ConnectWithTLS ...
+func ConnectWithTLS(opts ConnectTLSOpts) (*mongo.Database, error) {
+	ctx := context.Background()
+	uri := fmt.Sprintf("%s/?tls=true&tlsCAFile=%s&tlsCertificateKeyFile=%s&tlsCertificateKeyFilePassword=%s", opts.Host, opts.CaFilePath, opts.CertificateKeyFilePath, opts.CertificateKeyFilePassword)
+	readPref := readpref.SecondaryPreferred()
+	credential := options.Credential{
+		AuthMechanism: "MONGODB-X509",
+	}
+	clientOpts := options.Client().SetAuth(credential).SetReadPreference(readPref).SetReplicaSet(opts.ReplSet).ApplyURI(uri)
+	client, err := mongo.Connect(ctx, clientOpts)
+	if err != nil {
+		return nil, err
+	}
+	if err := client.Ping(ctx, readpref.SecondaryPreferred()); err != nil {
+		return nil, err
+	}
+	db = client.Database(opts.DBName)
+	return db, err
+}
+
 // Connect to mongo server
 func Connect(host, user, password, dbName, mechanism, source string) (*mongo.Database, error) {
 	connectOptions := options.ClientOptions{}
@@ -31,7 +62,7 @@ func Connect(host, user, password, dbName, mechanism, source string) (*mongo.Dat
 		return nil, err
 	}
 
-	fmt.Println(aurora.Green("*** CONNECTED TO MONGODB: " + host))
+	fmt.Println(aurora.Green("*** CONNECTED TO MONGODB: " + host + " --- DB: " + dbName))
 
 	// Set data
 	db = client.Database(dbName)