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Re-add previous metric bridge (#3192)
* re-add previous metric bridge * move bridge/opencensus/opencensusmetric to bridge/opencensus/internal/ocmetric/ * add resource and scope to opencensus metric bridge Co-authored-by: Chester Cheung <cheung.zhy.csu@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| // Copyright The OpenTelemetry Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
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| //go:build go1.18 | ||
| // +build go1.18 | ||
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| package opencensus // import "go.opentelemetry.io/otel/bridge/opencensus" | ||
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| import ( | ||
| "context" | ||
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| ocmetricdata "go.opencensus.io/metric/metricdata" | ||
| "go.opencensus.io/metric/metricexport" | ||
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| internal "go.opentelemetry.io/otel/bridge/opencensus/internal/ocmetric" | ||
| "go.opentelemetry.io/otel/sdk/instrumentation" | ||
| "go.opentelemetry.io/otel/sdk/metric" | ||
| "go.opentelemetry.io/otel/sdk/metric/metricdata" | ||
| "go.opentelemetry.io/otel/sdk/resource" | ||
| ) | ||
|
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| // exporter implements the OpenCensus metric Exporter interface using an | ||
| // OpenTelemetry base exporter. | ||
| type exporter struct { | ||
| base metric.Exporter | ||
| res *resource.Resource | ||
| } | ||
|
|
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| // NewMetricExporter returns an OpenCensus exporter that exports to an | ||
| // OpenTelemetry exporter. | ||
| func NewMetricExporter(base metric.Exporter, res *resource.Resource) metricexport.Exporter { | ||
| return &exporter{base: base} | ||
| } | ||
|
|
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| // ExportMetrics implements the OpenCensus metric Exporter interface by sending | ||
| // to an OpenTelemetry exporter. | ||
| func (e *exporter) ExportMetrics(ctx context.Context, ocmetrics []*ocmetricdata.Metric) error { | ||
| otelmetrics, err := internal.ConvertMetrics(ocmetrics) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return e.base.Export(ctx, metricdata.ResourceMetrics{ | ||
| Resource: e.res, | ||
| ScopeMetrics: []metricdata.ScopeMetrics{ | ||
| { | ||
| Scope: instrumentation.Scope{ | ||
| Name: "go.opentelemetry.io/otel/bridge/opencensus", | ||
| }, | ||
| Metrics: otelmetrics, | ||
| }, | ||
| }}) | ||
| } |
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