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5.5.2 SpanContext Structure

The SpanContextDataType Structure is defined in Table 7. It defines a TraceId and SpanId. This Structure can be passed between Clients and Servers (see 5.5.4).

Table 7 – SpanContextDataType

Name

Type

Description

SpanContextDataType

Structure

Subtype of Structure defined in OPC 10000-5

TraceId

0:Guid

A unique identifier assigned to a trace.

SpanId

0:UInt64

Identifier for a span in a trace. 0 is an invalid value for a SpanId. The value shall be unique within a ParentSpanId within an Application.

The SpanContextDataType representation in the AddressSpace is formally defined in Table 8

Table 8 – SpanContextDataType definition

Attribute

Value

BrowseName

SpanContextDataType

IsAbstract

False

References

NodeClass

BrowseName

DataType

TypeDefinition

Other

Subtype of the 0:Structure defined in OPC 10000-5

ConformanceUnits

LogObject TraceContext

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