115 lines
4.2 KiB
Go
115 lines
4.2 KiB
Go
// Copyright The OpenTelemetry Authors
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// SPDX-License-Identifier: Apache-2.0
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package trace // import "go.opentelemetry.io/otel/sdk/trace"
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import "go.opentelemetry.io/otel/sdk/internal/env"
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const (
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// DefaultAttributeValueLengthLimit is the default maximum allowed
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// attribute value length, unlimited.
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DefaultAttributeValueLengthLimit = -1
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// DefaultAttributeCountLimit is the default maximum number of attributes
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// a span can have.
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DefaultAttributeCountLimit = 128
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// DefaultEventCountLimit is the default maximum number of events a span
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// can have.
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DefaultEventCountLimit = 128
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// DefaultLinkCountLimit is the default maximum number of links a span can
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// have.
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DefaultLinkCountLimit = 128
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// DefaultAttributePerEventCountLimit is the default maximum number of
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// attributes a span event can have.
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DefaultAttributePerEventCountLimit = 128
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// DefaultAttributePerLinkCountLimit is the default maximum number of
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// attributes a span link can have.
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DefaultAttributePerLinkCountLimit = 128
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)
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// SpanLimits represents the limits of a span.
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type SpanLimits struct {
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// AttributeValueLengthLimit is the maximum allowed attribute value length.
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//
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// This limit only applies to string and string slice attribute values.
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// Any string longer than this value will be truncated to this length.
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//
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// Setting this to a negative value means no limit is applied.
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AttributeValueLengthLimit int
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// AttributeCountLimit is the maximum allowed span attribute count. Any
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// attribute added to a span once this limit is reached will be dropped.
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//
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// Setting this to zero means no attributes will be recorded.
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//
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// Setting this to a negative value means no limit is applied.
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AttributeCountLimit int
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// EventCountLimit is the maximum allowed span event count. Any event
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// added to a span once this limit is reached means it will be added but
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// the oldest event will be dropped.
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//
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// Setting this to zero means no events we be recorded.
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//
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// Setting this to a negative value means no limit is applied.
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EventCountLimit int
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// LinkCountLimit is the maximum allowed span link count. Any link added
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// to a span once this limit is reached means it will be added but the
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// oldest link will be dropped.
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//
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// Setting this to zero means no links we be recorded.
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//
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// Setting this to a negative value means no limit is applied.
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LinkCountLimit int
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// AttributePerEventCountLimit is the maximum number of attributes allowed
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// per span event. Any attribute added after this limit reached will be
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// dropped.
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//
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// Setting this to zero means no attributes will be recorded for events.
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//
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// Setting this to a negative value means no limit is applied.
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AttributePerEventCountLimit int
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// AttributePerLinkCountLimit is the maximum number of attributes allowed
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// per span link. Any attribute added after this limit reached will be
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// dropped.
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//
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// Setting this to zero means no attributes will be recorded for links.
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//
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// Setting this to a negative value means no limit is applied.
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AttributePerLinkCountLimit int
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}
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// NewSpanLimits returns a SpanLimits with all limits set to the value their
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// corresponding environment variable holds, or the default if unset.
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//
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// • AttributeValueLengthLimit: OTEL_SPAN_ATTRIBUTE_VALUE_LENGTH_LIMIT
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// (default: unlimited)
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//
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// • AttributeCountLimit: OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT (default: 128)
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//
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// • EventCountLimit: OTEL_SPAN_EVENT_COUNT_LIMIT (default: 128)
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//
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// • AttributePerEventCountLimit: OTEL_EVENT_ATTRIBUTE_COUNT_LIMIT (default:
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// 128)
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//
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// • LinkCountLimit: OTEL_SPAN_LINK_COUNT_LIMIT (default: 128)
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//
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// • AttributePerLinkCountLimit: OTEL_LINK_ATTRIBUTE_COUNT_LIMIT (default: 128)
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func NewSpanLimits() SpanLimits {
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return SpanLimits{
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AttributeValueLengthLimit: env.SpanAttributeValueLength(DefaultAttributeValueLengthLimit),
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AttributeCountLimit: env.SpanAttributeCount(DefaultAttributeCountLimit),
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EventCountLimit: env.SpanEventCount(DefaultEventCountLimit),
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LinkCountLimit: env.SpanLinkCount(DefaultLinkCountLimit),
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AttributePerEventCountLimit: env.SpanEventAttributeCount(DefaultAttributePerEventCountLimit),
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AttributePerLinkCountLimit: env.SpanLinkAttributeCount(DefaultAttributePerLinkCountLimit),
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}
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}
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