telegraf/plugins/inputs/mailchimp/chimp_api.go

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package mailchimp
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"log"
"net/http"
"net/url"
"regexp"
"sync"
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"time"
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)
const (
reports_endpoint string = "/3.0/reports"
reports_endpoint_campaign string = "/3.0/reports/%s"
)
var mailchimp_datacenter = regexp.MustCompile("[a-z]+[0-9]+$")
type ChimpAPI struct {
Transport http.RoundTripper
Debug bool
sync.Mutex
url *url.URL
}
type ReportsParams struct {
Count string
Offset string
SinceSendTime string
BeforeSendTime string
}
func (p *ReportsParams) String() string {
v := url.Values{}
if p.Count != "" {
v.Set("count", p.Count)
}
if p.Offset != "" {
v.Set("offset", p.Offset)
}
if p.BeforeSendTime != "" {
v.Set("before_send_time", p.BeforeSendTime)
}
if p.SinceSendTime != "" {
v.Set("since_send_time", p.SinceSendTime)
}
return v.Encode()
}
func NewChimpAPI(apiKey string) *ChimpAPI {
u := &url.URL{}
u.Scheme = "https"
u.Host = fmt.Sprintf("%s.api.mailchimp.com", mailchimp_datacenter.FindString(apiKey))
u.User = url.UserPassword("", apiKey)
return &ChimpAPI{url: u}
}
type APIError struct {
Status int `json:"status"`
Type string `json:"type"`
Title string `json:"title"`
Detail string `json:"detail"`
Instance string `json:"instance"`
}
func (e APIError) Error() string {
return fmt.Sprintf("ERROR %v: %v. See %v", e.Status, e.Title, e.Type)
}
func chimpErrorCheck(body []byte) error {
var e APIError
json.Unmarshal(body, &e)
if e.Title != "" || e.Status != 0 {
return e
}
return nil
}
func (a *ChimpAPI) GetReports(params ReportsParams) (ReportsResponse, error) {
a.Lock()
defer a.Unlock()
a.url.Path = reports_endpoint
var response ReportsResponse
rawjson, err := runChimp(a, params)
if err != nil {
return response, err
}
err = json.Unmarshal(rawjson, &response)
if err != nil {
return response, err
}
return response, nil
}
func (a *ChimpAPI) GetReport(campaignID string) (Report, error) {
a.Lock()
defer a.Unlock()
a.url.Path = fmt.Sprintf(reports_endpoint_campaign, campaignID)
var response Report
rawjson, err := runChimp(a, ReportsParams{})
if err != nil {
return response, err
}
err = json.Unmarshal(rawjson, &response)
if err != nil {
return response, err
}
return response, nil
}
func runChimp(api *ChimpAPI, params ReportsParams) ([]byte, error) {
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client := &http.Client{
Transport: api.Transport,
Timeout: time.Duration(4 * time.Second),
}
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var b bytes.Buffer
req, err := http.NewRequest("GET", api.url.String(), &b)
if err != nil {
return nil, err
}
req.URL.RawQuery = params.String()
req.Header.Set("User-Agent", "Telegraf-MailChimp-Plugin")
if api.Debug {
log.Printf("D! Request URL: %s", req.URL.String())
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}
resp, err := client.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
if api.Debug {
log.Printf("D! Response Body:%s", string(body))
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}
if err = chimpErrorCheck(body); err != nil {
return nil, err
}
return body, nil
}
type ReportsResponse struct {
Reports []Report `json:"reports"`
TotalItems int `json:"total_items"`
}
type Report struct {
ID string `json:"id"`
CampaignTitle string `json:"campaign_title"`
Type string `json:"type"`
EmailsSent int `json:"emails_sent"`
AbuseReports int `json:"abuse_reports"`
Unsubscribed int `json:"unsubscribed"`
SendTime string `json:"send_time"`
TimeSeries []TimeSerie
Bounces Bounces `json:"bounces"`
Forwards Forwards `json:"forwards"`
Opens Opens `json:"opens"`
Clicks Clicks `json:"clicks"`
FacebookLikes FacebookLikes `json:"facebook_likes"`
IndustryStats IndustryStats `json:"industry_stats"`
ListStats ListStats `json:"list_stats"`
}
type Bounces struct {
HardBounces int `json:"hard_bounces"`
SoftBounces int `json:"soft_bounces"`
SyntaxErrors int `json:"syntax_errors"`
}
type Forwards struct {
ForwardsCount int `json:"forwards_count"`
ForwardsOpens int `json:"forwards_opens"`
}
type Opens struct {
OpensTotal int `json:"opens_total"`
UniqueOpens int `json:"unique_opens"`
OpenRate float64 `json:"open_rate"`
LastOpen string `json:"last_open"`
}
type Clicks struct {
ClicksTotal int `json:"clicks_total"`
UniqueClicks int `json:"unique_clicks"`
UniqueSubscriberClicks int `json:"unique_subscriber_clicks"`
ClickRate float64 `json:"click_rate"`
LastClick string `json:"last_click"`
}
type FacebookLikes struct {
RecipientLikes int `json:"recipient_likes"`
UniqueLikes int `json:"unique_likes"`
FacebookLikes int `json:"facebook_likes"`
}
type IndustryStats struct {
Type string `json:"type"`
OpenRate float64 `json:"open_rate"`
ClickRate float64 `json:"click_rate"`
BounceRate float64 `json:"bounce_rate"`
UnopenRate float64 `json:"unopen_rate"`
UnsubRate float64 `json:"unsub_rate"`
AbuseRate float64 `json:"abuse_rate"`
}
type ListStats struct {
SubRate float64 `json:"sub_rate"`
UnsubRate float64 `json:"unsub_rate"`
OpenRate float64 `json:"open_rate"`
ClickRate float64 `json:"click_rate"`
}
type TimeSerie struct {
TimeStamp string `json:"timestamp"`
EmailsSent int `json:"emails_sent"`
UniqueOpens int `json:"unique_opens"`
RecipientsClick int `json:"recipients_click"`
}