feat(audit): wire request-meta middleware and writer initialization

pkg/initialize/init.go

@@ -19,6 +19,7 @@ package initialize
 import (
 	"time"
 
+	"code.vikunja.io/api/pkg/audit"
 	"code.vikunja.io/api/pkg/config"
 	"code.vikunja.io/api/pkg/cron"
 	"code.vikunja.io/api/pkg/db"
@@ -98,6 +99,12 @@ func FullInitWithoutAsync() {
 	// See the package comment in pkg/license/license.go before removing.
 	license.Init()
 
+	if config.AuditEnabled.GetBool() {
+		if err := audit.Init(); err != nil {
+			log.Fatalf("Could not initialize audit logging: %s", err)
+		}
+	}
+
 	// Start the mail daemon
 	mail.StartMailDaemon()
 

pkg/routes/middleware/request_meta.go

@@ -0,0 +1,45 @@
+// Vikunja is a to-do list application to facilitate your life.
+// Copyright 2018-present Vikunja and contributors. All rights reserved.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package middleware
+
+import (
+	"code.vikunja.io/api/pkg/events"
+
+	"github.com/labstack/echo/v5"
+)
+
+// RequestMeta stashes IP, User-Agent and X-Request-ID on the request context
+// so events dispatched while handling the request carry them as message
+// metadata (consumed by the audit listeners).
+func RequestMeta() echo.MiddlewareFunc {
+	return func(next echo.HandlerFunc) echo.HandlerFunc {
+		return func(c *echo.Context) error {
+			req := c.Request()
+			requestID := req.Header.Get(echo.HeaderXRequestID)
+			if requestID == "" {
+				requestID = c.Response().Header().Get(echo.HeaderXRequestID)
+			}
+			ctx := events.WithRequestMeta(req.Context(), &events.RequestMeta{
+				IP:        c.RealIP(),
+				UserAgent: req.UserAgent(),
+				RequestID: requestID,
+			})
+			c.SetRequest(req.WithContext(ctx))
+			return next(c)
+		}
+	}
+}

pkg/routes/routes.go

@@ -199,6 +199,10 @@ func NewEcho() *echo.Echo {
 	// handler binds them. Runs globally so both /api/v1 and /api/v2 benefit.
 	e.Use(vmiddleware.NormalizeArrayParams())
 
+	if config.AuditEnabled.GetBool() {
+		e.Use(vmiddleware.RequestMeta())
+	}
+
 	setupSentry(e)
 
 	// Validation