Span(mapping=None, *, ignore_unknown_fields=False, **kwargs)A span represents a single operation within a trace. Spans can be nested to form a trace tree. Often, a trace contains a root span that describes the end-to-end latency, and one or more subspans for its sub-operations.
A trace can also contain multiple root spans, or none at all. Spans do not need to be contiguous. There might be gaps or overlaps between spans in a trace.
Attributes |
|
|---|---|
| Name | Description |
name |
str
Required. The resource name of the span in the following format: - projects/[PROJECT_ID]/traces/[TRACE_ID]/spans/[SPAN_ID]
[TRACE_ID] is a unique identifier for a trace within a
project; it is a 32-character hexadecimal encoding of a
16-byte array. It should not be zero.
[SPAN_ID] is a unique identifier for a span within a
trace; it is a 16-character hexadecimal encoding of an
8-byte array. It should not be zero. .
|
span_id |
str
Required. The [SPAN_ID] portion of the span's resource
name.
|
parent_span_id |
str
The [SPAN_ID] of this span's parent span. If this is a
root span, then this field must be empty.
|
display_name |
google.cloud.trace_v2.types.TruncatableString
Required. A description of the span's operation (up to 128 bytes). Cloud Trace displays the description in the Cloud console. For example, the display name can be a qualified method name or a file name and a line number where the operation is called. A best practice is to use the same display name within an application and at the same call point. This makes it easier to correlate spans in different traces. |
start_time |
google.protobuf.timestamp_pb2.Timestamp
Required. The start time of the span. On the client side, this is the time kept by the local machine where the span execution starts. On the server side, this is the time when the server's application handler starts running. |
end_time |
google.protobuf.timestamp_pb2.Timestamp
Required. The end time of the span. On the client side, this is the time kept by the local machine where the span execution ends. On the server side, this is the time when the server application handler stops running. |
attributes |
google.cloud.trace_v2.types.Span.Attributes
A set of attributes on the span. You can have up to 32 attributes per span. |
stack_trace |
google.cloud.trace_v2.types.StackTrace
Stack trace captured at the start of the span. |
time_events |
google.cloud.trace_v2.types.Span.TimeEvents
A set of time events. You can have up to 32 annotations and 128 message events per span. |
links |
google.cloud.trace_v2.types.Span.Links
Links associated with the span. You can have up to 128 links per Span. |
status |
google.rpc.status_pb2.Status
Optional. The final status for this span. |
same_process_as_parent_span |
google.protobuf.wrappers_pb2.BoolValue
Optional. Set this parameter to indicate whether this span is in the same process as its parent. If you do not set this parameter, Trace is unable to take advantage of this helpful information. |
child_span_count |
google.protobuf.wrappers_pb2.Int32Value
Optional. The number of child spans that were generated while this span was active. If set, allows implementation to detect missing child spans. |
span_kind |
google.cloud.trace_v2.types.Span.SpanKind
Optional. Distinguishes between spans generated in a particular context. For example, two spans with the same name may be distinguished using CLIENT (caller) and
SERVER (callee) to identify an RPC call.
|
Classes
Attributes
Attributes(mapping=None, *, ignore_unknown_fields=False, **kwargs)A set of attributes as key-value pairs.
Link
Link(mapping=None, *, ignore_unknown_fields=False, **kwargs)A pointer from the current span to another span in the same trace or in a different trace. For example, this can be used in batching operations, where a single batch handler processes multiple requests from different traces or when the handler receives a request from a different project.
Links
Links(mapping=None, *, ignore_unknown_fields=False, **kwargs)A collection of links, which are references from this span to a span in the same or different trace.
SpanKind
SpanKind(value)Type of span. Can be used to specify additional relationships between spans in addition to a parent/child relationship.
TimeEvent
TimeEvent(mapping=None, *, ignore_unknown_fields=False, **kwargs)A time-stamped annotation or message event in the Span.
This message has oneof_ fields (mutually exclusive fields).
For each oneof, at most one member field can be set at the same time.
Setting any member of the oneof automatically clears all other
members.
.. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
TimeEvents
TimeEvents(mapping=None, *, ignore_unknown_fields=False, **kwargs)A collection of TimeEvent\ s. A TimeEvent is a time-stamped
annotation on the span, consisting of either user-supplied key:value
pairs, or details of a message sent/received between Spans.