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5e871e81a8
* otel to 1.24 * prometheus exporter to 0.46 * bunotel to 1.1.17 Also: * Use schemaless URL for metrics * Add software version to tracing schema
45 lines
1.6 KiB
Go
45 lines
1.6 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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package exemplar // import "go.opentelemetry.io/otel/sdk/metric/internal/exemplar"
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import (
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"context"
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"time"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/sdk/metric/metricdata"
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)
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// Reservoir holds the sampled exemplar of measurements made.
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type Reservoir[N int64 | float64] interface {
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// Offer accepts the parameters associated with a measurement. The
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// parameters will be stored as an exemplar if the Reservoir decides to
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// sample the measurement.
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//
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// The passed ctx needs to contain any baggage or span that were active
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// when the measurement was made. This information may be used by the
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// Reservoir in making a sampling decision.
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//
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// The time t is the time when the measurement was made. The val and attr
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// parameters are the value and dropped (filtered) attributes of the
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// measurement respectively.
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Offer(ctx context.Context, t time.Time, val N, attr []attribute.KeyValue)
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// Collect returns all the held exemplars.
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//
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// The Reservoir state is preserved after this call.
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Collect(dest *[]metricdata.Exemplar[N])
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}
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