forked from TrueCloudLab/distribution
42 lines
1.4 KiB
Go
42 lines
1.4 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 stdoutmetric // import "go.opentelemetry.io/otel/exporters/stdout/stdoutmetric"
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import (
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"errors"
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)
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// Encoder encodes and outputs OpenTelemetry metric data-types as human
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// readable text.
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type Encoder interface {
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// Encode handles the encoding and writing of OpenTelemetry metric data.
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Encode(v any) error
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}
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// encoderHolder is the concrete type used to wrap an Encoder so it can be
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// used as a atomic.Value type.
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type encoderHolder struct {
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encoder Encoder
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}
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func (e encoderHolder) Encode(v any) error { return e.encoder.Encode(v) }
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// shutdownEncoder is used when the exporter is shutdown. It always returns
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// errShutdown when Encode is called.
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type shutdownEncoder struct{}
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var errShutdown = errors.New("exporter shutdown")
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func (shutdownEncoder) Encode(any) error { return errShutdown }
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