Add Support for Multiple Attributes #136
Description
Is your feature request related to a problem? Please describe.
Add Ability to pass in multiple Attributes into one otel.instrument() call.
Describe the solution you'd like
What I propose is adding additional signatures to otel.instrument that support attributes in the format of Map<String, Map<String,String>> where the strings represent <Attribute, <LabelKey, LabelValue>>
Example:
currently what is required to collect this metric
otel.instrument(beantomcatconnectors, "tomcat.threads.idle", "description", "1",
["proto_handler" : { mbean -> mbean.name().getKeyProperty("name") }],
"currentThreadCount", otel.&doubleValueObserver)
otel.instrument(beantomcatconnectors, "tomcat.threads.busy", "description", "1",
["proto_handler" : { mbean -> mbean.name().getKeyProperty("name") }],
"currentThreadsBusy", otel.&doubleValueObserver)
What it would like with the proposed solution
otel.instrument(beantomcatconnectors, "tomcat.threads", "description", "1",
["proto_handler" : { mbean -> mbean.name().getKeyProperty("name") }],
["currentThreadCount": ["Thread Type": "current"],
"currentThreadsBusy": ["Thread Type": "busy"]],
otel.&doubleValueObserver)