Class TraceSpan (1.7.0)

TraceSpan(mapping=None, *, ignore_unknown_fields=False, **kwargs)

A span represents a single timed event within a trace. Spans can be nested and form a trace tree. Often, a trace contains a root span that describes the end-to-end latency of an operation and, optionally, one or more subspans for its suboperations. Spans do not need to be contiguous. There may be gaps between spans in a trace.


span_id int
Identifier for the span. Must be a 64-bit integer other than 0 and unique within a trace. For example, ``2205310701640571284``.
Distinguishes between spans generated in a particular context. For example, two spans with the same name may be distinguished using ``RPC_CLIENT`` and ``RPC_SERVER`` to identify queueing latency associated with the span.
name str
Name of the span. Must be less than 128 bytes. The span name is sanitized and displayed in the Stackdriver Trace tool in the Google Cloud Platform Console. The name may be a method name or some other per-call site name. For the same executable and the same call point, a best practice is to use a consistent name, which makes it easier to correlate cross-trace spans.
start_time google.protobuf.timestamp_pb2.Timestamp
Start time of the span in nanoseconds from the UNIX epoch.
end_time google.protobuf.timestamp_pb2.Timestamp
End time of the span in nanoseconds from the UNIX epoch.
parent_span_id int
Optional. ID of the parent span, if any.
labels Mapping[str, str]
Collection of labels associated with the span. Label keys must be less than 128 bytes. Label values must be less than 16 kilobytes (10MB for ``/stacktrace`` values). Some predefined label keys exist, or you may create your own. When creating your own, we recommend the following formats: - ``/category/product/key`` for agents of well-known products (e.g. ``/db/mongodb/read_size``). - ``short_host/path/key`` for domain-specific keys (e.g. ````) Predefined labels include: - ``/agent`` - ``/component`` - ``/error/message`` - ``/error/name`` - ``/http/client_city`` - ``/http/client_country`` - ``/http/client_protocol`` - ``/http/client_region`` - ``/http/host`` - ``/http/method`` - ``/http/path`` - ``/http/redirected_url`` - ``/http/request/size`` - ``/http/response/size`` - ``/http/route`` - ``/http/status_code`` - ``/http/url`` - ``/http/user_agent`` - ``/pid`` - ``/stacktrace`` - ``/tid``


builtins.object > proto.message.Message > TraceSpan



LabelsEntry(mapping=None, *, ignore_unknown_fields=False, **kwargs)

The abstract base class for a message.

kwargs dict

Keys and values corresponding to the fields of the message.

mapping Union[dict, `.Message`]

A dictionary or message to be used to determine the values for this message.

ignore_unknown_fields Optional(bool)

If True, do not raise errors for unknown fields. Only applied if mapping is a mapping type or there are keyword parameters.



Type of span. Can be used to specify additional relationships between spans in addition to a parent/child relationship.