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