func metric(ctx *web.Context, nodename string, property string) {
m, err := graphpaper.GetMetric(nodename, property)
if err != nil {
log.Println("error: failed to fetch metric", err)
ctx.Abort(500, "Error")
} else {
metricTemplate.render(ctx, m)
}
}
func index(ctx *web.Context) {
nodes, err := graphpaper.NodeList(time.Seconds())
if err != nil {
log.Println("error: failed to fetch nodes", err)
ctx.Abort(500, "Error")
} else {
data := struct{ Nodes *[]graphpaper.Node }{nodes}
indexTemplate.render(ctx, data)
}
}
func node(ctx *web.Context, nodename string) {
n := graphpaper.Node{nodename} // todo: should be a real method
metrics, err := n.Metrics(time.Nanoseconds()-(86400*1000000000), time.Nanoseconds())
if err != nil {
log.Println("error: failed to fetch metrics", err)
ctx.Abort(500, "Error")
} else {
data := struct {
graphpaper.Node
Metrics *[]graphpaper.Metric
}{n, metrics}
nodeTemplate.render(ctx, data)
}
}
func graph(ctx *web.Context, nodename string, property string, width string, height string) {
m, err := graphpaper.GetMetric(nodename, property)
if err != nil {
log.Println("error: failed to get metric", err)
ctx.Abort(500, "Error")
return
}
w, err := strconv.Atoui(width)
if err != nil {
log.Println("error: failed to convert height", err)
ctx.Abort(500, "Error")
return
}
h, err := strconv.Atoui(height)
if err != nil {
log.Println("error: failed to convert height", err)
ctx.Abort(500, "Error")
return
}
table, err := m.GetMeasurements(time.Seconds()-86400, time.Seconds())
if err != nil {
log.Println("error: failed to fetch metrics", err)
ctx.Abort(500, "Error")
return
}
ctx.SetHeader("Content-type", "image/png", true)
err = graphpaper.DrawTable(ctx, table, w, h)
if err != nil {
log.Println("error: failed to draw graph", err)
ctx.Abort(500, "Error")
}
}