THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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- Use the legacy meter to report measurements.
Diagrams
These diagrams show an example of how the wrapper mechanism works for "counter" style stats and meters. The first is a class diagram, showing how the parts relate in general. The second is a sequence diagram that shows in some detail how the parts interact to route a given measurement to both a meter and a stat.
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@startuml
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MeterRegistry *-- Counter
class InstrumentationClass {
MeterRegistry registry
Statistics statistics
}
note right of InstrumentationClass: e.g. CacheServerStats
class LegacyCounterBuilder {
intStatistic(statistics, id)
longStatistic(statistics, id)
register(registry)
}
class LegacyCounter {
LegacyCounter(counter, binding)
increment(amount)
count()
Counter counter
StatisticsBinding binding
}
class Counter {
increment(amount)
count()
}
class StatisticsBinding {
Statistics statistics
int statId
increment(amount)
long longValue()
double doubleValue()
}
InstrumentedCode --> InstrumentationClass
InstrumentationClass --> LegacyCounterBuilder
InstrumentationClass --> LegacyCounter : increment(amount)
InstrumentationClass *-- Statistics
LegacyCounterBuilder --> MeterRegistry
LegacyCounterBuilder --> LegacyCounter
LegacyCounter --> StatisticsBinding : increment(amount)
LegacyCounter --> Counter : increment(amount)
StatisticsBinding --> Statistics : incInt(id, amount)
note right of LegacyCounterBuilder : New class
note right of LegacyCounter : New class (implements Counter)
note right of StatisticsBinding : New class
@enduml
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