// Register returns the correct MetricInfo instance from the pool for
// passed in metric and type. Register will always return a non nil value.
func (m *metricInfoStoreType) Register(
metric *metrics.Value, kind, subType types.Type) (
result *MetricInfo) {
if kind == types.Unknown {
panic("Got Unknown type")
}
if kind.UsesSubType() && subType == types.Unknown {
panic("Got unknown sub-type when it is required")
}
var ranges *Ranges
var isNotCumulative bool
if kind == types.Dist {
// TODO: Maybe later this shouldn't be tricorder specific,
// but for now tricorder is the only thing we know that
// has distributions.
distribution := metric.Value.(*messages.Distribution)
isNotCumulative = distribution.IsNotCumulative
upperLimitSlice := distExtractUpperLimits(distribution)
ranges = m.rangesCache.Get(metric.Path, upperLimitSlice)
}
infoStruct := MetricInfo{
path: metric.Path,
description: metric.Description,
unit: metric.Unit,
kind: kind,
subType: subType,
ranges: ranges,
isNotCumulative: isNotCumulative,
groupId: metric.GroupId}
result, alreadyExists := m.ByInfo[infoStruct]
if alreadyExists {
return
}
result = &infoStruct
m.ByInfo[infoStruct] = result
m.ByName[infoStruct.path] = append(m.ByName[infoStruct.path], result)
return
}
