mirror of
https://github.com/dutchcoders/transfer.sh.git
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cb6e5cb0c7
* use dep for vendoring * lets encrypt * moved web to transfer.sh-web repo * single command install * added first tests
77 lines
2.2 KiB
Go
77 lines
2.2 KiB
Go
// Copyright 2016 The Go Authors. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd.
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package main
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import (
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"crypto/rand"
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"encoding/hex"
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"log"
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"net/http"
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"time"
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"cloud.google.com/go/logging"
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"github.com/golang/gddo/database"
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)
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// newGCELogger returns a handler that wraps h but logs each request
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// using Google Cloud Logging service.
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func newGCELogger(cli *logging.Logger) *GCELogger {
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return &GCELogger{cli}
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}
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type GCELogger struct {
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cli *logging.Logger
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}
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// LogEvent creates an entry in Cloud Logging to record user's behavior. We should only
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// use this to log events we are interested in. General request logs are handled by GAE
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// automatically in request_log and stderr.
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func (g *GCELogger) LogEvent(w http.ResponseWriter, r *http.Request, content interface{}) {
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const sessionCookieName = "GODOC_ORG_SESSION_ID"
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cookie, err := r.Cookie(sessionCookieName)
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if err != nil {
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// Generates a random session id and sends it in response.
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rs, err := randomString()
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if err != nil {
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log.Println("error generating a random session id: ", err)
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return
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}
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// This cookie is intentionally short-lived and contains no information
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// that might identify the user. Its sole purpose is to tie query
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// terms and destination pages together to measure search quality.
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cookie = &http.Cookie{
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Name: sessionCookieName,
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Value: rs,
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Expires: time.Now().Add(time.Hour),
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}
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http.SetCookie(w, cookie)
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}
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// We must not record the client's IP address, or any other information
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// that might compromise the user's privacy.
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payload := map[string]interface{}{
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sessionCookieName: cookie.Value,
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"path": r.URL.RequestURI(),
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"method": r.Method,
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"referer": r.Referer(),
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}
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if pkgs, ok := content.([]database.Package); ok {
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payload["packages"] = pkgs
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}
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// Log queues the entry to its internal buffer, or discarding the entry
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// if the buffer was full.
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g.cli.Log(logging.Entry{
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Payload: payload,
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})
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}
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func randomString() (string, error) {
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b := make([]byte, 8)
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_, err := rand.Read(b)
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return hex.EncodeToString(b), err
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}
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