func measurementObjectiveEvaluate(context *ctp.ApiContext, item *Measurement) *ctp.HttpError {
item.Objective.Status = ctp.Terror
ctp.Log(context, ctp.DEBUG, "Evaluating objective: %s\n", item.Objective.Condition)
machine, err := jsmm.Compile(item.Objective.Condition)
if err != nil {
return ctp.NewBadRequestErrorf("Error in objective compilation - %s", err.Error())
}
if item.Result == nil {
item.Objective.Status = ctp.Ttrue
return nil
}
if context.DebugVM {
machine.DebugMode(true)
}
if err := importMeasurementResultInJSMM(machine, item.Result); err != nil {
return ctp.NewBadRequestErrorf("Error in objective evaluation while importing result - %s", err.Error)
}
v, exception := machine.Execute()
if exception != nil {
return ctp.NewBadRequestErrorf("Error in objective evaluation - %s", exception.Error())
}
if v != nil {
item.Objective.Status = ctp.ToBoolErr(v.ToBoolean())
}
return nil
}
func measurementCheckResult(context *ctp.ApiContext, item *Measurement) *ctp.HttpError {
var metric Metric
if item.Metric == "" {
return ctp.NewBadRequestError("Missing metric attribute in measurement.")
}
if item.Result == nil {
return ctp.NewBadRequestError("Missing result attribute in measurement.")
}
metricParams, ok := ctp.ParseLink(context.CtpBase, "@/metrics/$", item.Metric)
if !ok {
return ctp.NewBadRequestError("Metric URL is incorrect in measurement")
}
if !ctp.LoadResource(context, "metrics", ctp.Base64Id(metricParams[0]), &metric) {
return ctp.NewBadRequestErrorf("Metric %s does not exist", ctp.ExpandLink(context.CtpBase, item.Metric))
}
for _, row := range item.Result.Value {
if len(row) != len(metric.ResultFormat) {
return ctp.NewBadRequestErrorf("Metric expects %d columns, but result value provides %d", len(metric.ResultFormat), len(row))
}
for name, cell := range row {
metricDetailFound := false
for _, metricDetail := range metric.ResultFormat {
if metricDetail.Name == name {
metricDetailFound = true
kind := reflect.ValueOf(cell).Kind()
switch metricDetail.Type {
case "number":
if kind != reflect.Float64 {
return ctp.NewBadRequestError("Metric expects a number, but result is of different type")
}
case "boolean":
if kind != reflect.Bool {
return ctp.NewBadRequestError("Metric expects a boolean, but result is of different type")
}
case "string":
if kind != reflect.String {
return ctp.NewBadRequestError("Metric expects a string, but result is of different type")
}
default:
return ctp.NewBadRequestError("Metric type information is incorrect")
}
break // from for
}
}
if !metricDetailFound {
return ctp.NewBadRequestErrorf("Metric does not describe '%s', which appears in result", name)
}
}
}
return nil
}
func measurementCheckMetric(context *ctp.ApiContext, item *Measurement) *ctp.HttpError {
var metric Metric
if item.Metric == "" {
return ctp.NewBadRequestError("Missing metric attribute in measurement.")
}
metricParams, ok := ctp.ParseLink(context.CtpBase, "@/metrics/$", item.Metric)
if !ok {
return ctp.NewBadRequestError("Metric URL is incorrect in measurement")
}
if !ctp.LoadResource(context, "metrics", ctp.Base64Id(metricParams[0]), &metric) {
return ctp.NewBadRequestErrorf("Metric %s does not exist", ctp.ExpandLink(context.CtpBase, item.Metric))
}
return nil
}
func triggerCheckCondition(context *ctp.ApiContext, trigger *Trigger, measurement *Measurement) (bool, error) {
if measurement == nil {
measurementParams, ok := ctp.ParseLink(context.CtpBase, "@/measurements/$", trigger.Measurement)
if !ok {
return false, fmt.Errorf("Measurement URL is incorrect")
}
measurement = new(Measurement)
if !ctp.LoadResource(context, "measurements", ctp.Base64Id(measurementParams[0]), measurement) {
return false, fmt.Errorf("Measurement %s does not exist", ctp.ExpandLink(context.CtpBase, trigger.Measurement))
}
}
machine, err := jsmm.Compile(trigger.Condition)
if err != nil {
return false, ctp.NewBadRequestErrorf("Error in condition specification - %s", err.Error())
}
if context.DebugVM {
machine.DebugMode(true)
}
if measurement.State != "activated" {
return false, nil
}
if measurement.Result == nil {
ctp.Log(context, ctp.ERROR, "In /measurements/%s, the state is activated but the value is null.", measurement.Id)
return false, nil
}
if err := importMeasurementResultInJSMM(machine, measurement.Result); err != nil {
return false, err
}
v, exception := machine.Execute()
if exception != nil {
return false, fmt.Errorf("Failed to evaluate condition: %s", exception.Error())
}
return v.ToBoolean(), nil
}
func (trigger *Trigger) Create(context *ctp.ApiContext) *ctp.HttpError {
trigger.BuildLinks(context)
trigger.Measurement = ctp.ShortenLink(context.CtpBase, trigger.Measurement)
if !ctp.IsShortLink(trigger.Measurement) {
return ctp.NewBadRequestError("Invalid measurement URL")
}
ok, err := triggerCheckCondition(context, trigger, nil)
if err != nil {
return ctp.NewBadRequestErrorf("%s", err.Error())
}
if ok {
triggerLogAndNotify(context, trigger, nil)
}
if !ctp.CreateResource(context, "triggers", trigger) {
return ctp.NewHttpError(http.StatusInternalServerError, "Could not save object")
}
return nil
}
