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Remove bound metric instruments from the API (new champion) (#2399)

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* Remove bound metric instruments from the API

* Removed dead code

* Added changelog message

* Added PR number

Co-authored-by: Joshua MacDonald <jmacd@lightstep.com>
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
This commit is contained in:
Aaron Clawson
2021-11-17 09:51:04 -06:00
committed by GitHub
parent b663c7c2bd
commit 034956199a
12 changed files with 19 additions and 528 deletions
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6
sdk/metric/doc.go
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@@ -28,9 +28,7 @@ and asynchronous instruments. There are two constructors per instrument for
the two kinds of number (int64, float64).
Synchronous instruments are managed by a sync.Map containing a *record
with the current state for each synchronous instrument. A bound
instrument encapsulates a direct pointer to the record, allowing
bound metric events to bypass a sync.Map lookup. A lock-free
with the current state for each synchronous instrument. A lock-free
algorithm is used to protect against races when adding and removing
items from the sync.Map.
@@ -45,7 +43,7 @@ record contains a set of recorders for every specific label set used in the
callback.
A sync.Map maintains the mapping of current instruments and label sets to
internal records. To create a new bound instrument, the SDK consults the Map to
internal records. To find a record, the SDK consults the Map to
locate an existing record, otherwise it constructs a new record. The SDK
maintains a count of the number of references to each record, ensuring
that records are not reclaimed from the Map while they are still active