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57 lines
2.2 KiB
Go
57 lines
2.2 KiB
Go
package datadogutils
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import (
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"flag"
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"regexp"
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"strings"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
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)
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var (
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// MaxInsertRequestSize is the maximum request size is defined at https://docs.datadoghq.com/api/latest/metrics/#submit-metrics
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MaxInsertRequestSize = flagutil.NewBytes("datadog.maxInsertRequestSize", 64*1024*1024, "The maximum size in bytes of a single DataDog POST request to /datadog/api/v2/series")
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// SanitizeMetricName controls sanitizing metric names ingested via DataDog protocols.
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//
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// If all metrics in Datadog have the same naming schema as custom metrics, then the following rules apply:
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// https://docs.datadoghq.com/metrics/custom_metrics/#naming-custom-metrics
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// But there's some hidden behaviour. In addition to what it states in the docs, the following is also done:
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// - Consecutive underscores are replaced with just one underscore
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// - Underscore immediately before or after a dot are removed
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SanitizeMetricName = flag.Bool("datadog.sanitizeMetricName", true, "Sanitize metric names for the ingested DataDog data to comply with DataDog behaviour described at "+
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"https://docs.datadoghq.com/metrics/custom_metrics/#naming-custom-metrics")
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)
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// SplitTag splits DataDog tag into tag name and value.
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//
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// See https://docs.datadoghq.com/getting_started/tagging/#define-tags
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func SplitTag(tag string) (string, string) {
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n := strings.IndexByte(tag, ':')
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if n < 0 {
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// No tag value.
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return tag, "no_label_value"
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}
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return tag[:n], tag[n+1:]
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}
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// SanitizeName performs DataDog-compatible sanitizing for metric names
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//
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// See https://docs.datadoghq.com/metrics/custom_metrics/#naming-custom-metrics
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func SanitizeName(name string) string {
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return namesSanitizer.Transform(name)
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}
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var namesSanitizer = bytesutil.NewFastStringTransformer(func(s string) string {
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s = unsupportedDatadogChars.ReplaceAllLiteralString(s, "_")
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s = multiUnderscores.ReplaceAllLiteralString(s, "_")
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s = underscoresWithDots.ReplaceAllLiteralString(s, ".")
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return s
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})
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var (
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unsupportedDatadogChars = regexp.MustCompile(`[^0-9a-zA-Z_\.]+`)
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multiUnderscores = regexp.MustCompile(`_+`)
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underscoresWithDots = regexp.MustCompile(`_?\._?`)
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)
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