fix cannot connect PostgreSQL via Unix socket (#253)

pkg/datastore/datastore_container.go

@@ -128,16 +128,16 @@ func getMysqlConnectionString(dbConfig *settings.DatabaseConfig) (string, error)
 }
 
 func getPostgresConnectionString(dbConfig *settings.DatabaseConfig) (string, error) {
-	host, port, err := net.SplitHostPort(dbConfig.DatabaseHost)
-
-	if err != nil {
-		return "", errs.ErrDatabaseHostInvalid
-	}
-
 	if strings.HasPrefix(dbConfig.DatabaseHost, "/") { // unix socket path
-		return fmt.Sprintf("postgres://%s:%s@:%s/%s?sslmode=%s&host=%s",
-			url.QueryEscape(dbConfig.DatabaseUser), url.QueryEscape(dbConfig.DatabasePassword), port, dbConfig.DatabaseName, dbConfig.DatabaseSSLMode, host), nil
+		return fmt.Sprintf("postgres:///%s?sslmode=%s&host=%s&user=%s&password=%s",
+			dbConfig.DatabaseName, dbConfig.DatabaseSSLMode, dbConfig.DatabaseHost, url.QueryEscape(dbConfig.DatabaseUser), url.QueryEscape(dbConfig.DatabasePassword)), nil
 	} else {
+		host, port, err := net.SplitHostPort(dbConfig.DatabaseHost)
+
+		if err != nil {
+			return "", errs.ErrDatabaseHostInvalid
+		}
+
 		return fmt.Sprintf("postgres://%s:%s@%s:%s/%s?sslmode=%s",
 			url.QueryEscape(dbConfig.DatabaseUser), url.QueryEscape(dbConfig.DatabasePassword), host, port, dbConfig.DatabaseName, dbConfig.DatabaseSSLMode), nil
 	}

pkg/datastore/datastore_container_test.go

@@ -0,0 +1,67 @@
+package datastore
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/mayswind/ezbookkeeping/pkg/settings"
+)
+
+func TestGetMysqlConnectionString_TCP(t *testing.T) {
+	expectedValue := "username:password@tcp(1.2.3.4:3306)/dbname?charset=utf8mb4&parseTime=true"
+	actualValue, err := getMysqlConnectionString(&settings.DatabaseConfig{
+		DatabaseType:     "mysql",
+		DatabaseHost:     "1.2.3.4:3306",
+		DatabaseName:     "dbname",
+		DatabaseUser:     "username",
+		DatabasePassword: "password",
+	})
+
+	assert.Nil(t, err)
+	assert.Equal(t, expectedValue, actualValue)
+}
+
+func TestGetMysqlConnectionString_UnixSocket(t *testing.T) {
+	expectedValue := "username:password@unix(/path/to/mysql.sock)/dbname?charset=utf8mb4&parseTime=true"
+	actualValue, err := getMysqlConnectionString(&settings.DatabaseConfig{
+		DatabaseType:     "mysql",
+		DatabaseHost:     "/path/to/mysql.sock",
+		DatabaseName:     "dbname",
+		DatabaseUser:     "username",
+		DatabasePassword: "password",
+	})
+
+	assert.Nil(t, err)
+	assert.Equal(t, expectedValue, actualValue)
+}
+
+func TestGetPostgreSQLConnectionString_TCP(t *testing.T) {
+	expectedValue := "postgres://username:password@1.2.3.4:5432/dbname?sslmode=disable"
+	actualValue, err := getPostgresConnectionString(&settings.DatabaseConfig{
+		DatabaseType:     "postgres",
+		DatabaseHost:     "1.2.3.4:5432",
+		DatabaseName:     "dbname",
+		DatabaseUser:     "username",
+		DatabasePassword: "password",
+		DatabaseSSLMode:  "disable",
+	})
+
+	assert.Nil(t, err)
+	assert.Equal(t, expectedValue, actualValue)
+}
+
+func TestGetPostgreSQLConnectionString_UnixSocket(t *testing.T) {
+	expectedValue := "postgres:///dbname?sslmode=disable&host=/path/to/postgres.sock&user=username&password=password"
+	actualValue, err := getPostgresConnectionString(&settings.DatabaseConfig{
+		DatabaseType:     "postgres",
+		DatabaseHost:     "/path/to/postgres.sock",
+		DatabaseName:     "dbname",
+		DatabaseUser:     "username",
+		DatabasePassword: "password",
+		DatabaseSSLMode:  "disable",
+	})
+
+	assert.Nil(t, err)
+	assert.Equal(t, expectedValue, actualValue)
+}