Sanket SudakeandGitHub
2a014e56b0
Replacing the older analytics with a new Google Analytics based mechanism.
102 lines
2.2 KiB
Go
102 lines
2.2 KiB
Go
/*
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Copyright 2021 The Fission Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package tracker
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import (
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"bytes"
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"context"
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"errors"
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"net/http"
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"net/url"
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"os"
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"time"
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uuid "github.com/satori/go.uuid"
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)
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const HTTP_TIMEOUT = 5 * time.Second
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const GA_API_URL = "https://www.google-analytics.com/collect"
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const GA_TRACKING_ID = "GA_TRACKING_ID"
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var Tracker *tracker
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type (
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tracker struct {
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gaPropertyID string
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cid string
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}
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Event struct {
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Category string
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Action string
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Label string
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Value string
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}
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)
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func init() {
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Tracker = &tracker{gaPropertyID: os.Getenv(GA_TRACKING_ID), cid: uuid.NewV4().String()}
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}
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func (t *tracker) SendEvent(e Event) error {
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if t.gaPropertyID == "" {
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return errors.New("tracker.SendEvent: GA_TRACKING_ID env not set")
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}
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if e.Action == "" || e.Category == "" {
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return errors.New("tracker.SendEvent: category and action are required")
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}
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v := url.Values{
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"v": {"1"},
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"tid": {t.gaPropertyID},
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"cid": {t.cid},
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"t": {"event"},
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"ec": {e.Category},
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"ea": {e.Action},
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}
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if e.Label != "" {
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v.Add("el", e.Label)
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}
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if e.Value != "" {
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v.Add("ev", e.Value)
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}
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buf := bytes.NewBufferString(v.Encode())
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req, err := http.NewRequest("POST", GA_API_URL, buf)
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req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
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req.Header.Add("User-Agent", "ga-tracker/1.0")
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if err != nil {
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return err
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}
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ctx, cancel := context.WithTimeout(req.Context(), HTTP_TIMEOUT)
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defer cancel()
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req = req.WithContext(ctx)
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client := http.DefaultClient
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resp, err := client.Do(req)
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if err != nil {
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return err
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}
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if resp.StatusCode != http.StatusOK {
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return errors.New("tracker.SendEvent: analytics response status not ok")
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}
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defer resp.Body.Close()
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return err
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}
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