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GNU AFFERO GENERAL PUBLIC LICENSE
Version 3, 19 November 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU Affero General Public License is a free, copyleft license for
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How to Apply These Terms to Your New Programs
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<one line to give the program's name and a brief idea of what it does.>
Copyright (C) 2025 trafficlunar
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For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.

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# TBA - monochrome status page
TODO: thumbnail
<p style="text-align: center">The cutest lightweight monochrome status page</p>

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- [ ] Accessibility
- [ ] Better mobile support
- [ ] Uptime percentage
- [ ] View incidents
- [ ] Latency graphs?
- [ ] README thumbnail

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27
config.toml Normal file
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# Name of status page, shown at the top
title = "trafficlunar"
# Footer link, shown at the bottom
link_text = "go back"
link_url = "https://trafficlunar.net"
# Default timeline shown on the index page
# Users can still switch views manually
#
# Available options:
# 'minutes' - past 30 minutes
# 'hours' - past 24 hours
# 'days' - past 30 days
default_view = "hours"
# List of services to monitor
[[services]]
name = "website"
url = "http://localhost:9999/up"
# Response time (in milliseconds) after which the service is considered "Degraded"
# Defaults to 1000ms
latency_threshold = 1000
[[services]]
name = "api"
url = "http://localhost:9999/degraded"

21
go.mod Normal file
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module status-page
go 1.25.4
require (
github.com/pelletier/go-toml/v2 v2.2.4
modernc.org/sqlite v1.40.1
)
require (
github.com/dustin/go-humanize v1.0.1 // indirect
github.com/google/uuid v1.6.0 // indirect
github.com/mattn/go-isatty v0.0.20 // indirect
github.com/ncruces/go-strftime v0.1.9 // indirect
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b // indirect
golang.org/x/sys v0.36.0 // indirect
modernc.org/libc v1.66.10 // indirect
modernc.org/mathutil v1.7.1 // indirect
modernc.org/memory v1.11.0 // indirect
)

51
go.sum Normal file
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@ -0,0 +1,51 @@
github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e h1:ijClszYn+mADRFY17kjQEVQ1XRhq2/JR1M3sGqeJoxs=
github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e/go.mod h1:boTsfXsheKC2y+lKOCMpSfarhxDeIzfZG1jqGcPl3cA=
github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
github.com/ncruces/go-strftime v0.1.9 h1:bY0MQC28UADQmHmaF5dgpLmImcShSi2kHU9XLdhx/f4=
github.com/ncruces/go-strftime v0.1.9/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
github.com/pelletier/go-toml/v2 v2.2.4 h1:mye9XuhQ6gvn5h28+VilKrrPoQVanw5PMw/TB0t5Ec4=
github.com/pelletier/go-toml/v2 v2.2.4/go.mod h1:2gIqNv+qfxSVS7cM2xJQKtLSTLUE9V8t9Stt+h56mCY=
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b h1:M2rDM6z3Fhozi9O7NWsxAkg/yqS/lQJ6PmkyIV3YP+o=
golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b/go.mod h1:3//PLf8L/X+8b4vuAfHzxeRUl04Adcb341+IGKfnqS8=
golang.org/x/mod v0.27.0 h1:kb+q2PyFnEADO2IEF935ehFUXlWiNjJWtRNgBLSfbxQ=
golang.org/x/mod v0.27.0/go.mod h1:rWI627Fq0DEoudcK+MBkNkCe0EetEaDSwJJkCcjpazc=
golang.org/x/sync v0.16.0 h1:ycBJEhp9p4vXvUZNszeOq0kGTPghopOL8q0fq3vstxw=
golang.org/x/sync v0.16.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=
golang.org/x/sys v0.36.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
golang.org/x/tools v0.36.0 h1:kWS0uv/zsvHEle1LbV5LE8QujrxB3wfQyxHfhOk0Qkg=
golang.org/x/tools v0.36.0/go.mod h1:WBDiHKJK8YgLHlcQPYQzNCkUxUypCaa5ZegCVutKm+s=
modernc.org/cc/v4 v4.26.5 h1:xM3bX7Mve6G8K8b+T11ReenJOT+BmVqQj0FY5T4+5Y4=
modernc.org/cc/v4 v4.26.5/go.mod h1:uVtb5OGqUKpoLWhqwNQo/8LwvoiEBLvZXIQ/SmO6mL0=
modernc.org/ccgo/v4 v4.28.1 h1:wPKYn5EC/mYTqBO373jKjvX2n+3+aK7+sICCv4Fjy1A=
modernc.org/ccgo/v4 v4.28.1/go.mod h1:uD+4RnfrVgE6ec9NGguUNdhqzNIeeomeXf6CL0GTE5Q=
modernc.org/fileutil v1.3.40 h1:ZGMswMNc9JOCrcrakF1HrvmergNLAmxOPjizirpfqBA=
modernc.org/fileutil v1.3.40/go.mod h1:HxmghZSZVAz/LXcMNwZPA/DRrQZEVP9VX0V4LQGQFOc=
modernc.org/gc/v2 v2.6.5 h1:nyqdV8q46KvTpZlsw66kWqwXRHdjIlJOhG6kxiV/9xI=
modernc.org/gc/v2 v2.6.5/go.mod h1:YgIahr1ypgfe7chRuJi2gD7DBQiKSLMPgBQe9oIiito=
modernc.org/goabi0 v0.2.0 h1:HvEowk7LxcPd0eq6mVOAEMai46V+i7Jrj13t4AzuNks=
modernc.org/goabi0 v0.2.0/go.mod h1:CEFRnnJhKvWT1c1JTI3Avm+tgOWbkOu5oPA8eH8LnMI=
modernc.org/libc v1.66.10 h1:yZkb3YeLx4oynyR+iUsXsybsX4Ubx7MQlSYEw4yj59A=
modernc.org/libc v1.66.10/go.mod h1:8vGSEwvoUoltr4dlywvHqjtAqHBaw0j1jI7iFBTAr2I=
modernc.org/mathutil v1.7.1 h1:GCZVGXdaN8gTqB1Mf/usp1Y/hSqgI2vAGGP4jZMCxOU=
modernc.org/mathutil v1.7.1/go.mod h1:4p5IwJITfppl0G4sUEDtCr4DthTaT47/N3aT6MhfgJg=
modernc.org/memory v1.11.0 h1:o4QC8aMQzmcwCK3t3Ux/ZHmwFPzE6hf2Y5LbkRs+hbI=
modernc.org/memory v1.11.0/go.mod h1:/JP4VbVC+K5sU2wZi9bHoq2MAkCnrt2r98UGeSK7Mjw=
modernc.org/opt v0.1.4 h1:2kNGMRiUjrp4LcaPuLY2PzUfqM/w9N23quVwhKt5Qm8=
modernc.org/opt v0.1.4/go.mod h1:03fq9lsNfvkYSfxrfUhZCWPk1lm4cq4N+Bh//bEtgns=
modernc.org/sortutil v1.2.1 h1:+xyoGf15mM3NMlPDnFqrteY07klSFxLElE2PVuWIJ7w=
modernc.org/sortutil v1.2.1/go.mod h1:7ZI3a3REbai7gzCLcotuw9AC4VZVpYMjDzETGsSMqJE=
modernc.org/sqlite v1.40.1 h1:VfuXcxcUWWKRBuP8+BR9L7VnmusMgBNNnBYGEe9w/iY=
modernc.org/sqlite v1.40.1/go.mod h1:9fjQZ0mB1LLP0GYrp39oOJXx/I2sxEnZtzCmEQIKvGE=
modernc.org/strutil v1.2.1 h1:UneZBkQA+DX2Rp35KcM69cSsNES9ly8mQWD71HKlOA0=
modernc.org/strutil v1.2.1/go.mod h1:EHkiggD70koQxjVdSBM3JKM7k6L0FbGE5eymy9i3B9A=
modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=

61
src/config.go Normal file
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package main
import (
"log"
"os"
"github.com/pelletier/go-toml/v2"
)
type ServiceConfig struct {
Name string `toml:"name"`
Url string `toml:"url"`
LatencyThreshold int `toml:"latency_threshold"`
}
type Config struct {
Title string `toml:"title"`
LinkText string `toml:"link_text"`
LinkUrl string `toml:"link_url"`
DefaultView string `toml:"default_view"`
Services []ServiceConfig `toml:"services"`
}
var config Config
func LoadConfig() {
configFile, err := os.ReadFile("config.toml")
if err != nil {
log.Fatalf("failed to load config: %v", err)
}
if err := toml.Unmarshal(configFile, &config); err != nil {
log.Fatalf("failed to parse config file: %v", err)
}
templateData.Title = config.Title
templateData.LinkText = config.LinkText
templateData.LinkUrl = config.LinkUrl
templateData.Services = make([]Service, len(config.Services))
for index, ser := range config.Services {
// default to 1000ms
latencyThreshold := int64(ser.LatencyThreshold)
if latencyThreshold == 0 {
latencyThreshold = 1000
}
service := Service{
Name: ser.Name,
Url: ser.Url,
LatencyThreshold: latencyThreshold,
Status: "Unknown",
MinuteTimeline: make([]TimelineEntry, 30),
HourTimeline: make([]TimelineEntry, 24),
DayTimeline: make([]TimelineEntry, 30),
}
templateData.Services[index] = service
}
log.Println("config loaded")
}

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src/database.go Normal file
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package main
import (
"database/sql"
"log"
"time"
_ "modernc.org/sqlite"
)
var STATUS_PRIORITY = map[string]int{"Offline": 2, "Degraded": 1, "Online": 0}
var db *sql.DB
func InitializeDatabase() {
// open/create database
var err error
db, err = sql.Open("sqlite", "status.db")
if err != nil {
log.Fatalf("failed to initalise database: %v", err)
}
db.SetMaxOpenConns(1)
_, err = db.Exec(`
CREATE TABLE IF NOT EXISTS timeline (
service TEXT NOT NULL,
status TEXT NOT NULL,
time DATETIME NOT NULL
);
`)
if err != nil {
log.Fatalf("failed to create table: %v", err)
}
_, err = db.Exec(`
CREATE TABLE IF NOT EXISTS incidents (
service TEXT NOT NULL,
status TEXT NOT NULL,
startTime DATETIME NOT NULL,
endTime DATETIME
);
`)
if err != nil {
log.Fatalf("failed to create table: %v", err)
}
// load template data from database
for index, service := range templateData.Services {
// timelines
rawTimeline := GetRawTimeline(service)
service.MinuteTimeline = generateRecap(rawTimeline, "minutes")
service.HourTimeline = generateRecap(rawTimeline, "hours")
service.DayTimeline = generateRecap(rawTimeline, "days")
// incidents
incidentRows, err := db.Query(`SELECT status, startTime, endTime FROM incidents WHERE service = ?`, service.Name)
if err != nil {
log.Fatalf("failed to load incidents for %s: %v", service.Name, err)
}
defer incidentRows.Close()
for incidentRows.Next() {
var record Incident
var startTimeStr string
var endTimeStr sql.NullString
err := incidentRows.Scan(&record.Status, &startTimeStr, &endTimeStr)
if err != nil {
log.Fatalf("failed to scan incident row: %v", err)
}
record.StartTime, err = time.Parse(time.RFC3339, startTimeStr)
if err != nil {
log.Fatalf("failed to parse incident startTime: %v", err)
}
if endTimeStr.Valid {
parsedEndTime, err := time.Parse(time.RFC3339, endTimeStr.String)
if err != nil {
log.Fatalf("failed to parse incident endTime: %v", err)
}
record.EndTime = &parsedEndTime
}
// add to templateData
service.Incidents = append(service.Incidents, record)
}
if err := incidentRows.Err(); err != nil {
log.Fatalf("incident row iteration error: %v", err)
}
// set data
templateData.Services[index] = service
}
log.Println("database initalised")
}
func CloseDatabase() {
if db != nil {
db.Close()
}
}
func GetRawTimeline(service Service) []TimelineEntry {
rows, err := db.Query(`SELECT status, time FROM timeline WHERE service = ? AND time >= datetime('now', '-30 days') ORDER BY time`, service.Name)
if err != nil {
log.Fatalf("failed to load timeline for %s: %v", service.Name, err)
}
defer rows.Close()
var rawTimeline []TimelineEntry
for rows.Next() {
var record TimelineEntry
var timeStr string
err := rows.Scan(&record.Status, &timeStr)
if err != nil {
log.Fatalf("failed to scan row: %v", err)
}
record.Time, err = time.Parse(time.RFC3339, timeStr)
if err != nil {
log.Fatalf("failed to parse datetime: %v", err)
}
rawTimeline = append(rawTimeline, record)
}
if err := rows.Err(); err != nil {
log.Fatalf("timeline row iteration error: %v", err)
}
return rawTimeline
}
func generateRecap(rawTimeline []TimelineEntry, view string) []TimelineEntry {
now := time.Now().UTC()
var cutoff time.Time
var limit = 30
var format string
switch view {
case "minutes":
cutoff = now.Add(-30 * time.Minute)
format = "3:04 pm"
case "hours":
cutoff = now.Add(-24 * time.Hour)
limit = 24
format = "3 pm"
case "days":
cutoff = now.AddDate(0, 0, -30)
format = "2 Jan"
}
recapMap := make(map[time.Time]string)
for _, entry := range rawTimeline {
if entry.Time.Before(cutoff) {
continue
}
var truncated time.Time
switch view {
case "minutes":
truncated = entry.Time.Truncate(time.Minute)
case "hours":
truncated = entry.Time.Truncate(time.Hour)
case "days":
truncated = time.Date(entry.Time.Year(), entry.Time.Month(), entry.Time.Day(), 0, 0, 0, 0, time.UTC)
}
if existing, ok := recapMap[truncated]; ok {
// check if status is worse
if STATUS_PRIORITY[entry.Status] > STATUS_PRIORITY[existing] {
recapMap[truncated] = entry.Status
}
} else {
recapMap[truncated] = entry.Status
}
}
var timeline []TimelineEntry
for i := 0; i < limit; i++ {
var timestamp time.Time
switch view {
case "minutes":
timestamp = now.Add(-time.Duration(30-i) * time.Minute).Truncate(time.Minute)
case "hours":
timestamp = now.Add(-time.Duration(24-i) * time.Hour).Truncate(time.Hour)
case "days":
day := now.AddDate(0, 0, -(30 - i))
timestamp = time.Date(day.Year(), day.Month(), day.Day(), 0, 0, 0, 0, time.UTC)
}
status := "Unknown"
if s, ok := recapMap[timestamp]; ok {
status = s
}
timeline = append(timeline, TimelineEntry{
Status: status,
Time: timestamp,
FormattedTime: timestamp.Format(format),
})
}
return timeline
}
// add entry to timeline and remove entries older than 30 days
func AddToTimeline(serviceIndex int, status string) {
service := templateData.Services[serviceIndex]
now := time.Now().UTC()
tx, err := db.Begin()
if err != nil {
log.Printf("failed to begin transaction: %v", err)
return
}
defer tx.Rollback()
_, err = tx.Exec(`INSERT INTO timeline (service, status, time) VALUES (?, ?, ?)`,
service.Name, status, now)
if err != nil {
log.Printf("failed to add to timeline: %v", err)
return
}
_, err = tx.Exec(`DELETE FROM timeline WHERE time < datetime('now', '-30 days')`)
if err != nil {
log.Printf("failed to delete old timeline entries: %v", err)
return
}
if err = tx.Commit(); err != nil {
log.Printf("failed to commit transaction: %v", err)
}
// update template data
service.MinuteTimeline = append(service.MinuteTimeline, TimelineEntry{
Status: status,
Time: now,
FormattedTime: now.Format("3:04 pm"),
})
// enforce limit
if len(service.MinuteTimeline) > 30 {
service.MinuteTimeline = service.MinuteTimeline[1:]
}
nowHour := now.Truncate(time.Hour)
nowDay := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, time.UTC)
// check if timeline is empty or hour has changed
if len(service.HourTimeline) == 0 || service.HourTimeline[len(service.HourTimeline)-1].Time.Before(nowHour) {
service.HourTimeline = append(service.HourTimeline, TimelineEntry{
Status: status,
Time: now,
FormattedTime: now.Format("3 pm"),
})
// enforce limit
if len(service.HourTimeline) > 24 {
service.HourTimeline = service.HourTimeline[1:]
}
} else {
// update existing entry if it's the same hour but status is worse
lastIndex := len(service.HourTimeline) - 1
if STATUS_PRIORITY[status] > STATUS_PRIORITY[service.HourTimeline[lastIndex].Status] {
service.HourTimeline[lastIndex].Status = status
}
}
// check if timeline is empty or day has changed
if len(service.DayTimeline) == 0 || service.DayTimeline[len(service.DayTimeline)-1].Time.Before(nowDay) {
service.DayTimeline = append(service.DayTimeline, TimelineEntry{
Status: status,
Time: now,
FormattedTime: now.Format("2 Jan"),
})
// enforce limit
if len(service.DayTimeline) > 30 {
service.DayTimeline = service.DayTimeline[1:]
}
} else {
// update existing entry if it's the same day but status is worse
lastIndex := len(service.DayTimeline) - 1
if STATUS_PRIORITY[status] > STATUS_PRIORITY[service.DayTimeline[lastIndex].Status] {
service.DayTimeline[lastIndex].Status = status
}
}
templateData.Services[serviceIndex] = service
}
func AddIncident(serviceIndex int, status string, startTime time.Time) {
service := templateData.Services[serviceIndex]
_, err := db.Exec(`INSERT INTO incidents (service, status, startTime) VALUES (?, ?, ?)`, service.Name, status, startTime)
if err != nil {
log.Printf("failed to add incident: %v", err)
}
service.Incidents = append(service.Incidents, Incident{
Status: status,
StartTime: startTime,
})
templateData.Services[serviceIndex] = service
log.Println("(" + service.Name + ") incident started")
}
func ResolveIncident(serviceIndex int, serviceName string, endTime time.Time) {
// get latest incident
service := templateData.Services[serviceIndex]
incident := service.Incidents[len(service.Incidents)-1]
// find row using latest incident's startTime and update database
_, err := db.Exec(`UPDATE incidents SET endTime = ? WHERE service = ? AND startTime = ?`, endTime, serviceName, incident.StartTime)
if err != nil {
log.Printf("failed to resolve incident: %v", err)
}
service.Incidents[len(service.Incidents)-1].EndTime = &endTime
templateData.Services[serviceIndex] = service
log.Println("(" + service.Name + ") incident resolved")
}

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src/http.go Normal file
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package main
import (
"compress/gzip"
"html/template"
"log"
"net/http"
"strings"
"time"
)
type Incident struct {
Status string
StartTime time.Time
EndTime *time.Time
// formatted duration
Duration string
}
type TimelineEntry struct {
Status string
Time time.Time
FormattedTime string
}
type Service struct {
Name string
Url string
LatencyThreshold int64
Status string
MinuteTimeline []TimelineEntry
HourTimeline []TimelineEntry
DayTimeline []TimelineEntry
Incidents []Incident
}
type TemplateData struct {
Title string
View string
LinkText string
LinkUrl string
LastUpdated int64
IsOperational bool
Services []Service
}
type ErrorTemplateData struct {
Title string
Error string
}
func ToUpper(s string) string {
return strings.ToUpper(s)
}
var templateData = TemplateData{
LastUpdated: time.Now().UTC().UnixMilli(),
}
var tmpl *template.Template
var errorTmpl *template.Template
func renderError(w http.ResponseWriter, statusCode int, message string) {
w.WriteHeader(statusCode)
errorData := ErrorTemplateData{
Error: message,
}
if err := errorTmpl.ExecuteTemplate(w, "error.html", errorData); err != nil {
log.Printf("error template execute error: %v", err)
http.Error(w, message, statusCode)
}
}
func index(w http.ResponseWriter, req *http.Request) {
// Handle 404
if req.URL.Path != "/" {
renderError(w, http.StatusNotFound, "Page not found")
return
}
data := templateData
data.View = req.URL.Query().Get("view")
switch data.View {
case "hours", "minutes", "days":
// is valid, do nothing
case "":
data.View = config.DefaultView
default:
renderError(w, http.StatusBadRequest, "Invalid view parameter")
return
}
// encode response in gzip
w.Header().Set("Content-Encoding", "gzip")
gw := gzip.NewWriter(w)
defer gw.Close()
if err := tmpl.ExecuteTemplate(gw, "index.html", data); err != nil {
log.Printf("template execute error: %v", err)
renderError(w, http.StatusInternalServerError, "Internal server error")
return
}
}
func favicon(w http.ResponseWriter, req *http.Request) {
http.ServeFile(w, req, "www/favicon.ico")
}
func robots(w http.ResponseWriter, req *http.Request) {
http.ServeFile(w, req, "www/robots.txt")
}
func StartHttpServer() {
var err error
log.Println("starting server on :8888")
// create template
funcMap := template.FuncMap{
"ToUpper": ToUpper,
}
tmpl, err = template.New("index").Funcs(funcMap).ParseFiles("www/index.html")
if err != nil {
log.Fatalf("failed to parse templates: %v", err)
}
errorTmpl, err = template.New("error").ParseFiles("www/error.html")
if err != nil {
log.Fatalf("failed to parse templates: %v", err)
}
// http server
http.HandleFunc("/", index)
http.HandleFunc("/favicon.ico", favicon)
http.HandleFunc("/robots.txt", robots)
if err := http.ListenAndServe(":8888", nil); err != nil {
log.Fatalf("server failed: %v", err)
}
}

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package main
func main() {
LoadConfig()
InitializeDatabase()
defer CloseDatabase()
StartCheckingStatuses()
StartHttpServer()
}

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package main
import (
"log"
"net/http"
"sync"
"time"
)
var client = http.Client{
Timeout: 10 * time.Second,
}
func checkStatuses() {
var wg sync.WaitGroup
for index, service := range templateData.Services {
wg.Add(1)
// run in parallel
go func(index int, service Service) {
defer wg.Done()
log.Println("(" + service.Name + ") sending request to " + service.Url)
startTime := time.Now().UTC()
res, err := client.Get(service.Url)
latency := time.Since(startTime).Milliseconds()
status := "Online"
if err != nil || res.StatusCode != 200 {
status = "Offline"
} else if latency >= service.LatencyThreshold {
status = "Degraded"
}
log.Printf("(%s) status is %s (latency: %dms)", service.Name, status, latency)
AddToTimeline(index, status)
rawTimeline := GetRawTimeline(service)
// check if status has changed from last request
if len(rawTimeline) == 0 || rawTimeline[len(rawTimeline)-1].Status != status {
if status == "Offline" || status == "Degraded" {
AddIncident(index, status, startTime)
} else if len(service.Incidents) != 0 && service.Incidents[len(service.Incidents)-1].EndTime == nil {
// if status is Online and there was an ongoing incident
ResolveIncident(index, service.Name, startTime) // startTime is actually finishTime
}
}
templateData.Services[index].Status = status
}(index, service)
}
// wait for all status checks to complete
wg.Wait()
// check if all services are operational
isOperational := true
for _, service := range templateData.Services {
if service.Status == "Offline" || service.Status == "Degraded" {
isOperational = false
break
}
}
templateData.IsOperational = isOperational
templateData.LastUpdated = time.Now().UTC().UnixMilli()
}
func StartCheckingStatuses() {
log.Println("started checking statuses...")
go func() {
checkStatuses()
for range time.Tick(1 * time.Minute) {
checkStatuses()
}
}()
}

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package main
import (
"fmt"
"log"
"net/http"
"time"
)
func upHandler(w http.ResponseWriter, req *http.Request) {
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, "UP")
}
// simulate slow response (>1000ms)
func degradedHandler(w http.ResponseWriter, req *http.Request) {
time.Sleep(1200 * time.Millisecond)
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, "DEGRADED")
}
func downHandler(w http.ResponseWriter, req *http.Request) {
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprintln(w, "DOWN")
}
func main() {
http.HandleFunc("/up", upHandler)
http.HandleFunc("/degraded", degradedHandler)
http.HandleFunc("/down", downHandler)
log.Println("test server starting on :9999")
if err := http.ListenAndServe(":9999", nil); err != nil {
log.Fatalf("test server failed: %v", err)
}
}

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>error - {{ .Title }}</title>
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link
href="https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&family=JetBrains+Mono:ital,wght@0,100..800;1,100..800&display=swap"
rel="stylesheet"
/>
<link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />
<style>
body {
background-color: #fcfcfc;
font-family: "Inter", sans-serif;
height: 100vh;
margin: 0;
display: flex;
justify-content: center;
align-items: center;
}
body::before {
content: "";
position: fixed;
inset: 0;
background-image: linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px), linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px);
background-size: 48px 48px;
background-position: center;
pointer-events: none;
}
main {
display: flex;
flex-direction: column;
width: 24rem;
padding: 1rem 2rem;
background-color: white;
z-index: 1;
outline: 1px solid rgba(0, 0, 0, 0.04);
}
span {
font-size: 4rem;
font-weight: 700;
}
h1 {
margin-bottom: 0;
font-weight: 800;
}
p {
margin-top: 0.5rem;
line-height: 1.5rem;
}
a {
text-decoration: none;
background-color: black;
color: white;
padding: 0.05rem 0.2rem;
}
</style>
</head>
<body>
<main>
<span>(𖦹﹏𖦹;)</span>
<h1>error — trafficlunar</h1>
<p>{{ .Error }}</p>
</main>
</body>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>status - {{ .Title }}</title>
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link
href="https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&family=JetBrains+Mono:ital,wght@0,100..800;1,100..800&display=swap"
rel="stylesheet"
/>
<link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />
<style>
* {
box-sizing: border-box;
}
body {
background-color: #fcfcfc;
font-family: "Inter", sans-serif;
min-height: 100vh;
margin: 0;
display: flex;
justify-content: center;
}
body::before {
content: "";
position: fixed;
inset: 0;
background-image: linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px), linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px);
background-size: 48px 48px;
background-position: center;
pointer-events: none;
}
main {
display: flex;
flex-direction: column;
width: 100%;
max-width: 40rem;
padding: 4rem 2rem 1.5rem;
background-color: white;
z-index: 1;
outline: 1px solid rgba(0, 0, 0, 0.04);
}
h1 {
font-weight: 800;
margin-top: 1rem;
margin-bottom: 1rem;
font-size: 1.5rem;
}
hr {
border: 0;
border-bottom: 2px dotted rgba(0, 0, 0, 0.1);
}
p {
margin-top: 4px;
line-height: 1.5rem;
}
#emoticon {
display: flex;
align-items: end;
height: 4.375rem;
}
#emoticon span {
font-size: 3rem;
font-weight: 700;
}
#overall-status {
background-color: black;
color: white;
padding: 0.5rem;
font-size: 0.875rem;
width: fit-content;
}
#pattern {
flex-grow: 1;
background-image: repeating-linear-gradient(-45deg, #000, #000 10px, transparent 0px, transparent 20px);
}
#caption {
display: flex;
justify-content: space-between;
align-items: center;
margin-top: 0.25rem;
margin-bottom: 1.25rem;
}
#last-updated {
color: rgba(0, 0, 0, 0.6);
font-size: 0.875rem;
margin: 0;
}
#legend {
display: flex;
justify-content: flex-end;
gap: 1rem;
flex-wrap: wrap;
}
.legend-item {
display: flex;
align-items: center;
gap: 0.35rem;
font-size: 0.75rem;
pointer-events: none;
}
.legend-item .status-bar {
width: 1rem;
height: 1rem;
}
#services {
display: flex;
flex-direction: column;
gap: 2.5rem;
}
.info {
display: flex;
align-items: end;
justify-content: space-between;
}
.service-name {
margin: 0;
font-size: 1.25rem;
text-decoration: none;
color: black;
font-weight: 600;
display: flex;
align-items: center;
gap: 0.2rem;
}
.service-name svg {
height: 1rem;
color: rgba(0, 0, 0, 0.2);
}
.service-name:hover svg {
color: rgba(0, 0, 0, 0.8);
}
.status {
font-family: "JetBrains Mono", monospace;
font-weight: 600;
font-size: 0.75rem;
}
.bars-container {
display: flex;
flex-direction: column;
align-items: end;
}
.bars {
position: relative;
display: flex;
justify-content: end;
width: 100%;
/* gap: 0.185rem; */
}
.bars > div {
display: flex;
justify-content: center;
width: calc(100% / 30);
height: 2.5rem;
position: relative;
}
.status-bar {
background-color: black;
border: 1px solid black;
width: calc(100% - 0.188rem);
height: 100%;
transition: transform 100ms ease-in-out;
position: relative;
z-index: 0;
}
.bars > div:hover .status-bar {
transform: translateY(-3px);
background-color: rgba(0, 0, 0, 0.7);
}
.bars > div:hover .status-bar::after {
content: attr(data-tooltip);
position: absolute;
bottom: 100%;
left: 50%;
margin-bottom: 0.5rem;
font-family: "JetBrains Mono", monospace;
font-weight: 600;
background-color: black;
color: white;
padding: 0.45rem 0.5rem;
border-radius: 0.25rem;
font-size: 0.75rem;
transform: translateX(-50%);
white-space: nowrap;
z-index: 10;
}
.status-bar.Unknown {
background-color: transparent;
background: radial-gradient(circle at center, rgb(235, 235, 235) 3px, transparent 3px);
border: 0;
}
.bars > div:hover .status-bar.Unknown {
background-color: transparent;
}
.status-bar.Degraded {
background-image: linear-gradient(to bottom, transparent 30%, white 30%), linear-gradient(to right, transparent 40%, white 40%);
background-size: 6px 7px;
background-position: 3px 4px;
}
.status-bar.Offline {
background-color: white;
}
.status-bar.Offline::before {
content: "✕";
position: absolute;
inset: 0;
display: flex;
align-items: center;
justify-content: center;
font-size: 2rem;
font-weight: 700;
color: black;
pointer-events: none;
overflow: hidden;
}
.bars-footer {
display: flex;
justify-content: space-between;
font-size: 0.75rem;
font-family: "JetBrains Mono", monospace;
margin-top: 0.5rem;
color: rgba(0, 0, 0, 0.5);
width: 100%;
}
footer {
margin-top: auto;
display: flex;
justify-content: space-between;
align-items: center;
}
footer a {
color: rgba(0, 0, 0, 0.3);
font-size: 0.875rem;
text-decoration: none;
}
footer a:hover {
color: black;
}
#combobox {
position: relative;
width: 8rem;
}
#combobox-trigger {
display: flex;
justify-content: space-between;
align-items: center;
width: 100%;
height: 1.75rem;
font-family: "Inter", sans-serif;
font-size: 0.825rem;
background-color: white;
border: 1px solid rgba(0, 0, 0, 0.5);
border-radius: 4px;
outline: none;
padding: 0;
padding-left: 0.5rem;
cursor: pointer;
transition: background-color 100ms ease;
}
#combobox-trigger:hover {
background-color: rgba(0, 0, 0, 0.03);
}
#combobox-trigger div {
display: flex;
justify-content: center;
align-items: center;
border-left: 1px solid rgba(0, 0, 0, 0.5);
}
#combobox-trigger.open div svg {
transform: rotate(180deg);
}
#combobox-dropdown {
position: absolute;
bottom: calc(100% + 0.25rem);
width: 100%;
background-color: white;
border: 1px solid black;
display: none;
flex-direction: column;
z-index: 100;
border-radius: 4px;
}
#combobox-dropdown.open {
display: flex;
}
.combobox-option {
padding: 0.35rem 0.5rem;
cursor: pointer;
color: black;
font-size: 0.825rem;
}
.combobox-option.selected {
background-color: rgba(0, 0, 0, 0.08);
}
.combobox-option:hover {
background-color: black;
color: white;
}
@media (max-width: 640px) {
main {
padding: 3rem 1rem 2rem;
}
#emoticon {
font-size: 2.5rem;
}
h1 {
font-size: 1.25rem;
}
h2 {
font-size: 1.125rem;
}
#overall-status {
font-size: 0.8125rem;
}
.status {
font-size: 0.6875rem;
}
.bars {
gap: 0.15rem;
}
.status-bar {
height: 2rem;
}
.legend-item {
font-size: 0.6875rem;
}
.legend-item .status-bar {
width: 0.875rem;
height: 0.875rem;
}
.bars-footer {
font-size: 0.6875rem;
}
#legend {
gap: 0.75rem;
}
}
@media (max-width: 480px) {
main {
padding: 2rem 0.875rem 1.5rem;
}
#emoticon {
font-size: 2rem;
}
h1 {
font-size: 1.125rem;
}
h2 {
font-size: 1rem;
}
.bars {
gap: 0.125rem;
}
.status-bar {
height: 1.75rem;
}
.status-bar:hover::after {
font-size: 0.6rem;
padding: 0.35rem 0.4rem;
}
#services {
gap: 2rem;
}
}
</style>
</head>
<body>
<main>
<div id="emoticon">
<span>{{ if .IsOperational }} ( • ⩊ • ) {{ else }} ( 𖦹 ﹏ 𖦹 ) {{ end }}</span>
</div>
<h1>status — {{ .Title }}</h1>
<div style="display: flex">
<div id="overall-status">
<span style="font-weight: 500; margin-right: 0.15rem">{{ if .IsOperational }} ✔ {{ else }} ✖ {{ end }}</span>
<span>{{ if .IsOperational }} All services are operational! {{ else }} We're experiencing some problems! {{ end }}</span>
</div>
<div id="pattern"></div>
</div>
<div id="caption">
<p id="last-updated">Last updated: ? ago</p>
<div id="legend">
<div class="legend-item">
<div class="status-bar Offline"></div>
<span>Offline</span>
</div>
<div class="legend-item">
<div class="status-bar Degraded" style="background-position: 3px 3px"></div>
<span>Degraded</span>
</div>
<div class="legend-item">
<div class="status-bar"></div>
<span>Online</span>
</div>
</div>
</div>
<div id="services">
{{ range $serviceIndex, $serviceStatus := .Services }}
<div>
<div class="info">
<a href="{{ $serviceStatus.Url }}" class="service-name">
{{ $serviceStatus.Name }}
<!-- link icon -->
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 256 256">
<path
fill="currentColor"
d="M228 104a12 12 0 0 1-24 0V69l-59.51 59.51a12 12 0 0 1-17-17L187 52h-35a12 12 0 0 1 0-24h64a12 12 0 0 1 12 12Zm-44 24a12 12 0 0 0-12 12v64H52V84h64a12 12 0 0 0 0-24H48a20 20 0 0 0-20 20v128a20 20 0 0 0 20 20h128a20 20 0 0 0 20-20v-68a12 12 0 0 0-12-12"
/>
</svg>
</a>
<span class="status">{{ $serviceStatus.Status | ToUpper }}</span>
</div>
<hr />
<div class="bars-container">
{{ if eq $.View "minutes" }}
<div class="bars">
{{ range $timelineIndex, $timelineStatus := $serviceStatus.MinuteTimeline }}
<div>
<div
class="status-bar {{ $timelineStatus.Status }}"
data-tooltip="{{ $timelineStatus.FormattedTime }} • {{ $timelineStatus.Status }}"
></div>
</div>
{{ end }}
</div>
<div class="bars-footer">
<span>30 minutes ago</span>
<span>now</span>
</div>
{{ else if eq $.View "hours" }}
<div class="bars">
{{ range $timelineIndex, $timelineStatus := $serviceStatus.HourTimeline }}
<div>
<div
class="status-bar {{ $timelineStatus.Status }}"
data-tooltip="{{ $timelineStatus.FormattedTime }} • {{ $timelineStatus.Status }}"
></div>
</div>
{{ end }}
</div>
<div class="bars-footer">
<span>24 hours ago</span>
<span>now</span>
</div>
{{ else }}
<div class="bars">
{{ range $timelineIndex, $timelineStatus := $serviceStatus.DayTimeline }}
<div>
<div
class="status-bar {{ $timelineStatus.Status }}"
data-tooltip="{{ $timelineStatus.FormattedTime }} • {{ $timelineStatus.Status }}"
></div>
</div>
{{ end }}
</div>
<div class="bars-footer">
<span>30 days ago</span>
<span>today</span>
</div>
{{ end }}
</div>
</div>
{{ else }}
<p>No services configured.</p>
{{ end }}
</div>
<footer>
<div id="combobox">
<button id="combobox-trigger">
<span>{{ if eq .View "minutes" }} 30 minutes {{ else if eq .View "hours" }} 24 hours {{ else }} 30 days {{ end }}</span>
<!-- arrow icon -->
<div>
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 24 24">
<path fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="m7 10l5 5m0 0l5-5" />
</svg>
</div>
</button>
<div id="combobox-dropdown">
<a href="/?view=minutes" class='combobox-option {{ if eq .View "minutes" }}selected{{ end }}' data-value="minutes">30 minutes</a>
<a href="/?view=hours" class='combobox-option {{ if eq .View "hours" }}selected{{ end }}' data-value="hours">24 hours</a>
<a href="/?view=days" class='combobox-option {{ if eq .View "days" }}selected{{ end }}' data-value="days">30 days</a>
</div>
</div>
<a href="{{ .LinkUrl }}">{{ .LinkText }}</a>
</footer>
</main>
<script>
const lastUpdatedText = document.querySelector("#last-updated");
function update() {
const seconds = Math.floor((Date.now() - new Date(Number("{{ .LastUpdated }}"))) / 1000);
const minutes = Math.floor(seconds / 60);
const hours = Math.floor(seconds / 3600);
const days = Math.floor(seconds / 86400);
if (days >= 1) lastUpdatedText.textContent = `Last updated: ${days}d ago`;
if (hours >= 1) lastUpdatedText.textContent = `Last updated: ${hours}h ago`;
lastUpdatedText.textContent = `Last updated: ${minutes}m ago`;
}
update();
setInterval(update, 60000);
// combobox
const trigger = document.querySelector("#combobox-trigger");
const dropdown = document.querySelector("#combobox-dropdown");
trigger.addEventListener("click", (e) => {
trigger.classList.toggle("open");
dropdown.classList.toggle("open");
});
</script>
</body>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>website offline</title>
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link href="https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&display=swap" rel="stylesheet" />
<link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />
<style>
body {
background-color: #fcfcfc;
font-family: "Inter", sans-serif;
height: 100vh;
margin: 0;
display: flex;
justify-content: center;
align-items: center;
}
body::before {
content: "";
position: fixed;
inset: 0;
background-image: linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px), linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px);
background-size: 48px 48px;
background-position: center;
pointer-events: none;
}
main {
display: flex;
flex-direction: column;
width: 24rem;
padding: 1rem 2rem;
background-color: white;
z-index: 1;
outline: 1px solid rgba(0, 0, 0, 0.04);
}
span {
font-size: 4rem;
font-weight: 700;
}
h1 {
margin-bottom: 0;
font-weight: 800;
}
p {
margin-top: 0.5rem;
line-height: 1.5rem;
}
a {
text-decoration: none;
background-color: black;
color: white;
padding: 0.05rem 0.2rem;
}
</style>
</head>
<body>
<main>
<span>(𖦹﹏𖦹;)</span>
<h1>offline — trafficlunar</h1>
<p>
This website is currently offline! It will be back soon, please check the
<a href="https://status.trafficlunar.net/">status</a> page for updates!
</p>
</main>
</body>
</html>

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User-agent: *
Allow: /
Disallow: /*