Split setting.go as multiple files (#6014)

* split setting.go as multiple files

* fix comments

modules/setting/session.go

@@ -0,0 +1,35 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package setting
+
+import (
+	"path"
+	"path/filepath"
+	"strings"
+
+	"code.gitea.io/gitea/modules/log"
+	"github.com/go-macaron/session"
+)
+
+var (
+	// SessionConfig difines Session settings
+	SessionConfig session.Options
+)
+
+func newSessionService() {
+	SessionConfig.Provider = Cfg.Section("session").Key("PROVIDER").In("memory",
+		[]string{"memory", "file", "redis", "mysql", "postgres", "couchbase", "memcache", "nodb"})
+	SessionConfig.ProviderConfig = strings.Trim(Cfg.Section("session").Key("PROVIDER_CONFIG").MustString(path.Join(AppDataPath, "sessions")), "\" ")
+	if SessionConfig.Provider == "file" && !filepath.IsAbs(SessionConfig.ProviderConfig) {
+		SessionConfig.ProviderConfig = path.Join(AppWorkPath, SessionConfig.ProviderConfig)
+	}
+	SessionConfig.CookieName = Cfg.Section("session").Key("COOKIE_NAME").MustString("i_like_gitea")
+	SessionConfig.CookiePath = AppSubURL
+	SessionConfig.Secure = Cfg.Section("session").Key("COOKIE_SECURE").MustBool(false)
+	SessionConfig.Gclifetime = Cfg.Section("session").Key("GC_INTERVAL_TIME").MustInt64(86400)
+	SessionConfig.Maxlifetime = Cfg.Section("session").Key("SESSION_LIFE_TIME").MustInt64(86400)
+
+	log.Info("Session Service Enabled")
+}