The Span Event Context is a Context implementation for pdata SpanEvents, the Collector's internal representation for OTLP Span Event data. This Context should be used when interacting with individual OTLP Span Events.
In general, the Span Event Context supports accessing pdata using the field names from the traces proto. All integers are returned and set via int64. All doubles are returned and set via float64.
The following paths are supported.
| path | field accessed | type |
|---|---|---|
| cache | the value of the current transform context's temporary cache. cache can be used as a temporary placeholder for data during complex transformations | pcommon.Map |
| cache[""] | the value of an item in cache. Supports multiple indexes to access nested fields. | string, bool, int64, float64, pcommon.Map, pcommon.Slice, []byte or nil |
| resource | resource of the span event being processed | pcommon.Resource |
| resource.attributes | resource attributes of the span event being processed | pcommon.Map |
| resource.attributes[""] | the value of the resource attribute of the span event being processed. Supports multiple indexes to access nested fields. | string, bool, int64, float64, pcommon.Map, pcommon.Slice, []byte or nil |
| instrumentation_scope | instrumentation scope of the span event being processed | pcommon.InstrumentationScope |
| instrumentation_scope.name | name of the instrumentation scope of the span event being processed | string |
| instrumentation_scope.version | version of the instrumentation scope of the span event being processed | string |
| instrumentation_scope.attributes | instrumentation scope attributes of the span event being processed | pcommon.Map |
| instrumentation_scope.attributes[""] | the value of the instrumentation scope attribute of the span event being processed. Supports multiple indexes to access nested fields. | string, bool, int64, float64, pcommon.Map, pcommon.Slice, []byte or nil |
| span | span of the span event being processed | ptrace.Span |
| span.* | All fields exposed by the ottlspan context can accessed via span. |
varies |
| attributes | attributes of the span event being processed | pcommon.Map |
| attributes[""] | the value of the attribute of the span event being processed. Supports multiple indexes to access nested fields. | string, bool, int64, float64, pcommon.Map, pcommon.Slice, []byte or nil |
| time_unix_nano | time_unix_nano of the span event being processed | int64 |
| time | time of the span event being processed | time.Time |
| name | name of the span event being processed | string |
| dropped_attributes_count | dropped_attributes_count of the span event being processed | int64 |
The Span Event Context supports the enum names from the traces proto.
| Enum Symbol | Value |
|---|---|
| SPAN_KIND_UNSPECIFIED | 0 |
| SPAN_KIND_INTERNAL | 1 |
| SPAN_KIND_SERVER | 2 |
| SPAN_KIND_CLIENT | 3 |
| SPAN_KIND_PRODUCER | 4 |
| SPAN_KIND_CONSUMER | 5 |
| STATUS_CODE_UNSET | 0 |
| STATUS_CODE_OK | 1 |
| STATUS_CODE_ERROR | 2 |