// command performs a Redis command.
func (urp *unifiedRequestProtocol) command(rs *ResultSet, multi bool, command string, args ...interface{}) {
m := monitoring.BeginMeasuring(identifier.Identifier("redis", "command", command))
doneChan := make(chan bool)
urp.commandChan <- &envCommand{rs, multi, command, args, doneChan}
<-doneChan
m.EndMeasuring()
}
// handleFunc is the main function of the web server dispatching the
// requests to registered resource handler.
func handleFunc(rw http.ResponseWriter, r *http.Request) {
ctx := newContext(rw, r)
resources := srv.domains[ctx.Domain]
if resources != nil {
handlers := resources[ctx.Resource]
if handlers != nil {
m := monitoring.BeginMeasuring(identifier.Identifier("web", ctx.Domain, ctx.Resource, ctx.Request.Method))
for _, h := range handlers {
if !dispatch(ctx, h) {
break
}
}
m.EndMeasuring()
return
}
}
// No valid configuration, redirect to default (if not already).
if ctx.Domain == srv.defaultDomain && ctx.Resource == srv.defaultResource {
// No default handler registered.
msg := fmt.Sprintf("domain '%v' and resource '%v' not found!", ctx.Domain, ctx.Resource)
applog.Errorf(msg)
http.Error(ctx.ResponseWriter, msg, http.StatusNotFound)
} else {
// Redirect to default handler.
applog.Warningf("domain '%v' and resource '%v' not found, redirecting to default", ctx.Domain, ctx.Resource)
ctx.Redirect(srv.defaultDomain, srv.defaultResource, "")
}
}
// process processes one event.
func (a *agentRunner) process(event Event) (err error) {
// Error recovering.
defer func() {
if r := recover(); r != nil {
applog.Errorf("agent %q has panicked: %v", a.agent.Id(), r)
err = a.agent.Recover(r, event)
}
}()
// Handle the event inside a measuring.
measuring := monitoring.BeginMeasuring(a.measuringId)
defer measuring.EndMeasuring()
if err = a.agent.Process(event); err != nil {
applog.Errorf("agent %q has failed: %v", a.agent.Id(), err)
return a.agent.Recover(err, event)
}
return nil
}
// process encapsulates event processing including error
// recovery and measuring.
func (c *cell) process(e Event) {
// Error recovering.
defer func() {
if r := recover(); r != nil {
if e != nil {
applog.Errorf("cell %q has error '%v' with event '%+v'", c.id, r, EventString(e))
} else {
applog.Errorf("cell %q has error '%v'", c.id, r)
}
c.behavior.Recover(r, e)
}
}()
defer e.Context().decrActivity()
// Handle the event inside a measuring.
measuring := monitoring.BeginMeasuring(c.measuringId)
emitter := &cellEventEmitter{c.subscribers, e.Context()}
c.behavior.ProcessEvent(e, emitter)
measuring.EndMeasuring()
}