mirror of
https://github.com/drakkan/sftpgo.git
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119 lines
3.3 KiB
Go
119 lines
3.3 KiB
Go
// Copyright (C) 2019 Nicola Murino
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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
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// by the Free Software Foundation, version 3.
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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 <https://www.gnu.org/licenses/>.
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package logger
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import (
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"crypto/tls"
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"fmt"
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"net"
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"net/http"
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"time"
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"github.com/go-chi/chi/v5/middleware"
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"github.com/rs/zerolog"
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"github.com/drakkan/sftpgo/v2/internal/metric"
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)
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// StructuredLogger defines a simple wrapper around zerolog logger.
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// It implements chi.middleware.LogFormatter interface
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type StructuredLogger struct {
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Logger *zerolog.Logger
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}
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// StructuredLoggerEntry defines a log entry.
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// It implements chi.middleware.LogEntry interface
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type StructuredLoggerEntry struct {
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// The zerolog logger
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Logger *zerolog.Logger
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// fields to write in the log
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fields map[string]any
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}
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// NewStructuredLogger returns a chi.middleware.RequestLogger using our StructuredLogger.
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// This structured logger is called by the chi.middleware.Logger handler to log each HTTP request
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func NewStructuredLogger(logger *zerolog.Logger) func(next http.Handler) http.Handler {
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return middleware.RequestLogger(&StructuredLogger{logger})
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}
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// NewLogEntry creates a new log entry for an HTTP request
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func (l *StructuredLogger) NewLogEntry(r *http.Request) middleware.LogEntry {
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scheme := "http"
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cipherSuite := ""
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if r.TLS != nil {
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scheme = "https"
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cipherSuite = tls.CipherSuiteName(r.TLS.CipherSuite)
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}
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fields := map[string]any{
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"local_addr": getLocalAddress(r),
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"remote_addr": r.RemoteAddr,
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"proto": r.Proto,
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"method": r.Method,
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"user_agent": r.UserAgent(),
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"uri": fmt.Sprintf("%s://%s%s", scheme, r.Host, r.RequestURI),
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"cipher_suite": cipherSuite,
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}
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reqID := middleware.GetReqID(r.Context())
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if reqID != "" {
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fields["request_id"] = reqID
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}
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return &StructuredLoggerEntry{Logger: l.Logger, fields: fields}
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}
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// Write logs a new entry at the end of the HTTP request
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func (l *StructuredLoggerEntry) Write(status, bytes int, _ http.Header, elapsed time.Duration, _ any) {
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metric.HTTPRequestServed(status)
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var ev *zerolog.Event
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if status >= http.StatusInternalServerError {
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ev = l.Logger.Error()
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} else if status >= http.StatusBadRequest {
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ev = l.Logger.Warn()
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} else {
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ev = l.Logger.Debug()
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}
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ev.
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Timestamp().
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Str("sender", "httpd").
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Fields(l.fields).
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Int("resp_status", status).
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Int("resp_size", bytes).
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Int64("elapsed_ms", elapsed.Nanoseconds()/1000000).
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Send()
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}
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// Panic logs panics
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func (l *StructuredLoggerEntry) Panic(v any, stack []byte) {
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l.Logger.Error().
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Timestamp().
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Str("sender", "httpd").
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Fields(l.fields).
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Str("stack", string(stack)).
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Str("panic", fmt.Sprintf("%+v", v)).
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Send()
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}
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func getLocalAddress(r *http.Request) string {
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if r == nil {
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return ""
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}
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localAddr, ok := r.Context().Value(http.LocalAddrContextKey).(net.Addr)
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if ok {
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return localAddr.String()
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}
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return ""
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}
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