40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
// Copyright The OpenTelemetry Authors
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
package metric // import "go.opentelemetry.io/otel/sdk/metric"
|
|
|
|
import (
|
|
"os"
|
|
"strconv"
|
|
"time"
|
|
|
|
"go.opentelemetry.io/otel/internal/global"
|
|
)
|
|
|
|
// Environment variable names.
|
|
const (
|
|
// The time interval (in milliseconds) between the start of two export attempts.
|
|
envInterval = "OTEL_METRIC_EXPORT_INTERVAL"
|
|
// Maximum allowed time (in milliseconds) to export data.
|
|
envTimeout = "OTEL_METRIC_EXPORT_TIMEOUT"
|
|
)
|
|
|
|
// envDuration returns an environment variable's value as duration in milliseconds if it is exists,
|
|
// or the defaultValue if the environment variable is not defined or the value is not valid.
|
|
func envDuration(key string, defaultValue time.Duration) time.Duration {
|
|
v := os.Getenv(key)
|
|
if v == "" {
|
|
return defaultValue
|
|
}
|
|
d, err := strconv.Atoi(v)
|
|
if err != nil {
|
|
global.Error(err, "parse duration", "environment variable", key, "value", v)
|
|
return defaultValue
|
|
}
|
|
if d <= 0 {
|
|
global.Error(errNonPositiveDuration, "non-positive duration", "environment variable", key, "value", v)
|
|
return defaultValue
|
|
}
|
|
return time.Duration(d) * time.Millisecond
|
|
}
|