// returns a simple state of health page. If heartbeat times in the DB are old then it also returns an http status of 500.
func soh(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", web.HtmlContent)
var b bytes.Buffer
b.Write([]byte(head))
b.Write([]byte(`<p>Current time is: ` + time.Now().UTC().String() + `</p>`))
b.Write([]byte(`<h3>Messaging</h3>`))
var bad bool
var s string
var t time.Time
b.Write([]byte(`<table><tr><th>Service</th><th>Time Received</th></tr>`))
rows, err := db.Query("select serverid, timereceived from qrt.soh")
if err == nil {
defer rows.Close()
for rows.Next() {
err := rows.Scan(&s, &t)
if err == nil {
if t.Before(time.Now().UTC().Add(old)) {
bad = true
b.Write([]byte(`<tr class="tr error">`))
} else {
b.Write([]byte(`<tr>`))
}
b.Write([]byte(`<td>` + s + `</td><td>` + t.String() + `</td></tr>`))
} else {
bad = true
b.Write([]byte(`<tr class="tr error"><td>DB error</td><td>` + err.Error() + `</td></tr>`))
}
}
rows.Close()
} else {
bad = true
b.Write([]byte(`<tr class="tr error"><td>DB error</td><td>` + err.Error() + `</td></tr>`))
}
b.Write([]byte(`</table>`))
b.Write([]byte(foot))
if bad {
web.ServiceInternalServerErrorBuf(w, r, &b)
return
}
web.OkBuf(w, r, &b)
}
// returns a simple state of health page. If the count of measured intensities falls below 50 this it also returns an http status of 500.
func impactSOH(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", web.HtmlContent)
var b bytes.Buffer
b.Write([]byte(head))
b.Write([]byte(`<p>Current time is: ` + time.Now().UTC().String() + `</p>`))
b.Write([]byte(`<h3>Impact</h3>`))
var bad bool
b.Write([]byte(`<table><tr><th>Impact</th><th>Count</th></tr>`))
var meas int
err := db.QueryRow("select count(*) from impact.intensity_measured").Scan(&meas)
if err == nil {
if meas < 50 {
bad = true
b.Write([]byte(`<tr class="tr error"><td>shaking measured</td><td>` + strconv.Itoa(meas) + ` < 50</td></tr>`))
} else {
b.Write([]byte(`<tr><td>shaking measured</td><td>` + strconv.Itoa(meas) + ` >= 50</td></tr>`))
}
} else {
bad = true
b.Write([]byte(`<tr class="tr error"><td>DB error</td><td>` + err.Error() + `</td></tr>`))
}
b.Write([]byte(`</table>`))
b.Write([]byte(foot))
if bad {
web.ServiceInternalServerErrorBuf(w, r, &b)
return
}
web.OkBuf(w, r, &b)
}