50 lines
1.9 KiB
Go
50 lines
1.9 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// metric package provides an API for reporting diagnostic
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// measurements using instruments categorized as follows:
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//
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// Synchronous instruments are called by the user with a Context.
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// Asynchronous instruments are called by the SDK during collection.
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//
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// Additive instruments are semantically intended for capturing a sum.
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// Non-additive instruments are intended for capturing a distribution.
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//
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// Additive instruments may be monotonic, in which case they are
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// non-descreasing and naturally define a rate.
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//
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// The synchronous instrument names are:
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//
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// Counter: additive, monotonic
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// UpDownCounter: additive
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// ValueRecorder: non-additive
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//
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// and the asynchronous instruments are:
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//
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// SumObserver: additive, monotonic
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// UpDownSumOnserver: additive
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// ValueObserver: non-additive
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//
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// All instruments are provided with support for either float64 or
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// int64 input values.
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//
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// The Meter interface supports allocating new instruments as well as
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// interfaces for recording batches of synchronous measurements or
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// asynchronous observations. To obtain a Meter, use a Provider.
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//
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// The Provider interface supports obtaining a named Meter interface.
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// To obtain a Provider implementation, initialize and configure any
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// compatible SDK.
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package metric // import "go.opentelemetry.io/otel/api/metric"
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