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metric_request.go
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/
metric_request.go
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package data
import (
"bytes"
"context"
"net/http"
v1export "go.opentelemetry.io/proto/otlp/collector/metrics/v1"
v1metrics "go.opentelemetry.io/proto/otlp/metrics/v1"
"google.golang.org/protobuf/proto"
)
const (
metricRequestContentType = "application/x-protobuf"
)
type metricsRequest struct {
raw *v1export.ExportMetricsServiceRequest
}
func NewMetricsRequest(ctx context.Context, endpoint string, metrics ...ResourceMetrics) (*http.Request, error) {
mr := metricsRequest{
raw: &v1export.ExportMetricsServiceRequest{
ResourceMetrics: make([]*v1metrics.ResourceMetrics, 0, len(metrics)),
},
}
for i := 0; i < len(metrics); i++ {
mr.raw.ResourceMetrics = append(mr.raw.ResourceMetrics, metrics[i].raw)
}
buf, err := proto.Marshal(mr.raw)
if err != nil {
return nil, err
}
req, err := http.NewRequestWithContext(
ctx,
http.MethodPost,
endpoint,
bytes.NewBuffer(buf),
)
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", metricRequestContentType)
return req, nil
}