101 lines
3.0 KiB
Go
101 lines
3.0 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package middleware
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import (
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"fmt"
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"net/http"
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"time"
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"codeberg.org/gruf/go-bytesize"
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"codeberg.org/gruf/go-errors/v2"
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"codeberg.org/gruf/go-kv"
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"codeberg.org/gruf/go-logger/v2/level"
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"github.com/gin-gonic/gin"
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"github.com/superseriousbusiness/gotosocial/internal/log"
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)
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// Logger returns a gin middleware which provides request logging and panic recovery.
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func Logger() gin.HandlerFunc {
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return func(c *gin.Context) {
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// Initialize the logging fields
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fields := make(kv.Fields, 6, 7)
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// Determine pre-handler time
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before := time.Now()
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// defer so that we log *after the request has completed*
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defer func() {
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code := c.Writer.Status()
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path := c.Request.URL.Path
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if r := recover(); r != nil {
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if c.Writer.Status() == 0 {
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// No response was written, send a generic Internal Error
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c.Writer.WriteHeader(http.StatusInternalServerError)
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}
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// Append panic information to the request ctx
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err := fmt.Errorf("recovered panic: %v", r)
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_ = c.Error(err)
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// Dump a stacktrace to error log
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callers := errors.GetCallers(3, 10)
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log.WithContext(c.Request.Context()).
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WithField("stacktrace", callers).Error(err)
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}
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// NOTE:
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// It is very important here that we are ONLY logging
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// the request path, and none of the query parameters.
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// Query parameters can contain sensitive information
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// and could lead to storing plaintext API keys in logs
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// Set request logging fields
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fields[0] = kv.Field{"latency", time.Since(before)}
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fields[1] = kv.Field{"clientIP", c.ClientIP()}
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fields[2] = kv.Field{"userAgent", c.Request.UserAgent()}
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fields[3] = kv.Field{"method", c.Request.Method}
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fields[4] = kv.Field{"statusCode", code}
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fields[5] = kv.Field{"path", path}
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// Create log entry with fields
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l := log.WithContext(c.Request.Context()).
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WithFields(fields...)
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// Default is info
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lvl := level.INFO
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if code >= 500 {
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// This is a server error
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lvl = level.ERROR
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l = l.WithField("error", c.Errors)
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}
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// Generate a nicer looking bytecount
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size := bytesize.Size(c.Writer.Size())
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// Finally, write log entry with status text body size
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l.Logf(lvl, "%s: wrote %s", http.StatusText(code), size)
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}()
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// Process request
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c.Next()
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}
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}
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