func findFirstMatchingPolicy(value *oproto.Value, policies []*oproto.RetentionPolicyItem) *oproto.RetentionPolicyItem {
now := openinstrument.NowMs()
valueStartAge := now - value.Timestamp
if value.EndTimestamp == 0 && value.Timestamp != 0 {
value.EndTimestamp = value.Timestamp
}
valueEndAge := now - value.EndTimestamp
for _, item := range policies {
if len(item.Variable) == 0 {
// No variables supplied, this matches everything
return item
}
for _, i := range item.Variable {
// Look for policies that match the variable age
v := variable.NewFromProto(i)
if v.TimestampInsideRange(valueStartAge) || v.TimestampInsideRange(valueEndAge) {
return item
}
}
}
return nil
}
func Encode(input *oproto.ValueStream) *oproto.ValueStream {
output := &oproto.ValueStream{Variable: input.Variable}
var last *oproto.Value
for _, value := range input.Value {
if last == nil {
last = value
continue
}
if last.StringValue != "" && value.StringValue != "" {
if last.StringValue == value.StringValue {
if value.EndTimestamp > value.Timestamp {
last.EndTimestamp = value.EndTimestamp
} else {
last.EndTimestamp = value.Timestamp
}
continue
}
} else {
if last.DoubleValue == value.DoubleValue {
if value.EndTimestamp > value.Timestamp {
last.EndTimestamp = value.EndTimestamp
} else {
last.EndTimestamp = value.Timestamp
}
continue
}
}
if last.EndTimestamp == 0 && last.Timestamp != 0 {
last.EndTimestamp = last.Timestamp
}
output.Value = append(output.Value, last)
last = value
}
if last != nil {
if last.EndTimestamp == 0 && last.Timestamp != 0 {
last.EndTimestamp = last.Timestamp
}
output.Value = append(output.Value, last)
}
return output
}
