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// Package ext contains a set of Datadog-specific constants. Most of them are used
// for setting span metadata.
package ext
const (
// TargetHost sets the target host address.
TargetHost = "out.host"
// TargetPort sets the target host port.
TargetPort = "out.port"
// SamplingPriority is the tag that marks the sampling priority of a span.
SamplingPriority = "sampling.priority"
// SQLType sets the sql type tag.
SQLType = "sql"
// SQLQuery sets the sql query tag on a span.
SQLQuery = "sql.query"
// HTTPMethod specifies the HTTP method used in a span.
HTTPMethod = "http.method"
// HTTPCode sets the HTTP status code as a tag.
HTTPCode = "http.status_code"
// HTTPURL sets the HTTP URL for a span.
HTTPURL = "http.url"
// TODO: In the next major version, prefix these constants (SpanType, etc)
// with "Key*" (KeySpanType, etc) to more easily differentiate between
// constants representing tag values and constants representing keys.
// SpanType defines the Span type (web, db, cache).
SpanType = "span.type"
// ServiceName defines the Service name for this Span.
ServiceName = "service.name"
// ResourceName defines the Resource name for the Span.
ResourceName = "resource.name"
// Error specifies the error tag. It's value is usually of type "error".
Error = "error"
// ErrorMsg specifies the error message.
ErrorMsg = "error.msg"
// ErrorType specifies the error type.
ErrorType = "error.type"
// ErrorStack specifies the stack dump.
ErrorStack = "error.stack"
// Environment specifies the environment to use with a trace.
Environment = "env"
// EventSampleRate specifies the rate at which this span will be sampled
// as an APM event.
EventSampleRate = "_dd1.sr.eausr"
)
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