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<h1><a href="cloudtrace_v2.html">Cloud Trace API</a> . <a href="cloudtrace_v2.projects.html">projects</a> . <a href="cloudtrace_v2.projects.traces.html">traces</a></h1>
<h2>Instance Methods</h2>
<p class="toc_element">
  <code><a href="cloudtrace_v2.projects.traces.spans.html">spans()</a></code>
</p>
<p class="firstline">Returns the spans Resource.</p>

<p class="toc_element">
  <code><a href="#batchWrite">batchWrite(name, body=None, x__xgafv=None)</a></code></p>
<p class="firstline">Sends new spans to new or existing traces. You cannot update</p>
<h3>Method Details</h3>
<div class="method">
    <code class="details" id="batchWrite">batchWrite(name, body=None, x__xgafv=None)</code>
  <pre>Sends new spans to new or existing traces. You cannot update
existing spans.

Args:
  name: string, Required. The name of the project where the spans belong. The format is
`projects/[PROJECT_ID]`. (required)
  body: object, The request body.
    The object takes the form of:

{ # The request message for the `BatchWriteSpans` method.
    &quot;spans&quot;: [ # Required. A list of new spans. The span names must not match existing
        # spans, or the results are undefined.
      { # 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&amp;mdash;there may be
          # gaps or overlaps between spans in a trace.
        &quot;displayName&quot;: { # Represents a string that might be shortened to a specified length. # Required. A description of the span&#x27;s operation (up to 128 bytes).
            # Trace displays the description in the
            # Google Cloud Platform 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.
          &quot;value&quot;: &quot;A String&quot;, # The shortened string. For example, if the original string is 500
              # bytes long and the limit of the string is 128 bytes, then
              # `value` contains the first 128 bytes of the 500-byte string.
              #
              # Truncation always happens on a UTF8 character boundary. If there
              # are multi-byte characters in the string, then the length of the
              # shortened string might be less than the size limit.
          &quot;truncatedByteCount&quot;: 42, # The number of bytes removed from the original string. If this
              # value is 0, then the string was not shortened.
        },
        &quot;links&quot;: { # A collection of links, which are references from this span to a span # Links associated with the span. You can have up to 128 links per Span.
            # in the same or different trace.
          &quot;link&quot;: [ # A collection of links.
            { # 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.
              &quot;traceId&quot;: &quot;A String&quot;, # The [TRACE_ID] for a trace within a project.
              &quot;type&quot;: &quot;A String&quot;, # The relationship of the current span relative to the linked span.
              &quot;spanId&quot;: &quot;A String&quot;, # The [SPAN_ID] for a span within a trace.
              &quot;attributes&quot;: { # A set of attributes, each in the format `[KEY]:[VALUE]`. # A set of attributes on the link. You have have up to  32 attributes per
                  # link.
                &quot;attributeMap&quot;: { # The set of attributes. Each attribute&#x27;s key can be up to 128 bytes
                    # long. The value can be a string up to 256 bytes, a signed 64-bit integer,
                    # or the Boolean values `true` and `false`. For example:
                    #
                    #     &quot;/instance_id&quot;: { &quot;string_value&quot;: { &quot;value&quot;: &quot;my-instance&quot; } }
                    #     &quot;/http/request_bytes&quot;: { &quot;int_value&quot;: 300 }
                    #     &quot;abc.com/myattribute&quot;: { &quot;bool_value&quot;: false }
                  &quot;a_key&quot;: { # The allowed types for [VALUE] in a `[KEY]:[VALUE]` attribute.
                    &quot;stringValue&quot;: { # Represents a string that might be shortened to a specified length. # A string up to 256 bytes long.
                      &quot;value&quot;: &quot;A String&quot;, # The shortened string. For example, if the original string is 500
                          # bytes long and the limit of the string is 128 bytes, then
                          # `value` contains the first 128 bytes of the 500-byte string.
                          #
                          # Truncation always happens on a UTF8 character boundary. If there
                          # are multi-byte characters in the string, then the length of the
                          # shortened string might be less than the size limit.
                      &quot;truncatedByteCount&quot;: 42, # The number of bytes removed from the original string. If this
                          # value is 0, then the string was not shortened.
                    },
                    &quot;intValue&quot;: &quot;A String&quot;, # A 64-bit signed integer.
                    &quot;boolValue&quot;: True or False, # A Boolean value represented by `true` or `false`.
                  },
                },
                &quot;droppedAttributesCount&quot;: 42, # The number of attributes that were discarded. Attributes can be discarded
                    # because their keys are too long or because there are too many attributes.
                    # If this value is 0 then all attributes are valid.
              },
            },
          ],
          &quot;droppedLinksCount&quot;: 42, # The number of dropped links after the maximum size was enforced. If
              # this value is 0, then no links were dropped.
        },
        &quot;parentSpanId&quot;: &quot;A String&quot;, # The [SPAN_ID] of this span&#x27;s parent span. If this is a root span,
            # then this field must be empty.
        &quot;timeEvents&quot;: { # A collection of `TimeEvent`s. A `TimeEvent` is a time-stamped annotation # A set of time events. You can have up to 32 annotations and 128 message
            # events per span.
            # on the span, consisting of either user-supplied key:value pairs, or
            # details of a message sent/received between Spans.
          &quot;droppedMessageEventsCount&quot;: 42, # The number of dropped message events in all the included time events.
              # If the value is 0, then no message events were dropped.
          &quot;timeEvent&quot;: [ # A collection of `TimeEvent`s.
            { # A time-stamped annotation or message event in the Span.
              &quot;time&quot;: &quot;A String&quot;, # The timestamp indicating the time the event occurred.
              &quot;annotation&quot;: { # Text annotation with a set of attributes. # Text annotation with a set of attributes.
                &quot;description&quot;: { # Represents a string that might be shortened to a specified length. # A user-supplied message describing the event. The maximum length for
                    # the description is 256 bytes.
                  &quot;value&quot;: &quot;A String&quot;, # The shortened string. For example, if the original string is 500
                      # bytes long and the limit of the string is 128 bytes, then
                      # `value` contains the first 128 bytes of the 500-byte string.
                      #
                      # Truncation always happens on a UTF8 character boundary. If there
                      # are multi-byte characters in the string, then the length of the
                      # shortened string might be less than the size limit.
                  &quot;truncatedByteCount&quot;: 42, # The number of bytes removed from the original string. If this
                      # value is 0, then the string was not shortened.
                },
                &quot;attributes&quot;: { # A set of attributes, each in the format `[KEY]:[VALUE]`. # A set of attributes on the annotation. You can have up to 4 attributes
                    # per Annotation.
                  &quot;attributeMap&quot;: { # The set of attributes. Each attribute&#x27;s key can be up to 128 bytes
                      # long. The value can be a string up to 256 bytes, a signed 64-bit integer,
                      # or the Boolean values `true` and `false`. For example:
                      #
                      #     &quot;/instance_id&quot;: { &quot;string_value&quot;: { &quot;value&quot;: &quot;my-instance&quot; } }
                      #     &quot;/http/request_bytes&quot;: { &quot;int_value&quot;: 300 }
                      #     &quot;abc.com/myattribute&quot;: { &quot;bool_value&quot;: false }
                    &quot;a_key&quot;: { # The allowed types for [VALUE] in a `[KEY]:[VALUE]` attribute.
                      &quot;stringValue&quot;: { # Represents a string that might be shortened to a specified length. # A string up to 256 bytes long.
                        &quot;value&quot;: &quot;A String&quot;, # The shortened string. For example, if the original string is 500
                            # bytes long and the limit of the string is 128 bytes, then
                            # `value` contains the first 128 bytes of the 500-byte string.
                            #
                            # Truncation always happens on a UTF8 character boundary. If there
                            # are multi-byte characters in the string, then the length of the
                            # shortened string might be less than the size limit.
                        &quot;truncatedByteCount&quot;: 42, # The number of bytes removed from the original string. If this
                            # value is 0, then the string was not shortened.
                      },
                      &quot;intValue&quot;: &quot;A String&quot;, # A 64-bit signed integer.
                      &quot;boolValue&quot;: True or False, # A Boolean value represented by `true` or `false`.
                    },
                  },
                  &quot;droppedAttributesCount&quot;: 42, # The number of attributes that were discarded. Attributes can be discarded
                      # because their keys are too long or because there are too many attributes.
                      # If this value is 0 then all attributes are valid.
                },
              },
              &quot;messageEvent&quot;: { # An event describing a message sent/received between Spans. # An event describing a message sent/received between Spans.
                &quot;compressedSizeBytes&quot;: &quot;A String&quot;, # The number of compressed bytes sent or received. If missing assumed to
                    # be the same size as uncompressed.
                &quot;uncompressedSizeBytes&quot;: &quot;A String&quot;, # The number of uncompressed bytes sent or received.
                &quot;id&quot;: &quot;A String&quot;, # An identifier for the MessageEvent&#x27;s message that can be used to match
                    # SENT and RECEIVED MessageEvents. It is recommended to be unique within
                    # a Span.
                &quot;type&quot;: &quot;A String&quot;, # Type of MessageEvent. Indicates whether the message was sent or
                    # received.
              },
            },
          ],
          &quot;droppedAnnotationsCount&quot;: 42, # The number of dropped annotations in all the included time events.
              # If the value is 0, then no annotations were dropped.
        },
        &quot;name&quot;: &quot;A String&quot;, # Required. The resource name of the span in the following format:
            #
            #     projects/[PROJECT_ID]/traces/[TRACE_ID]/spans/SPAN_ID is a unique identifier for a trace within a project;
            # it is a 32-character hexadecimal encoding of a 16-byte array.
            #
            # [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.
        &quot;status&quot;: { # The `Status` type defines a logical error model that is suitable for # Optional. The final status for this span.
            # different programming environments, including REST APIs and RPC APIs. It is
            # used by [gRPC](https://github.com/grpc). Each `Status` message contains
            # three pieces of data: error code, error message, and error details.
            #
            # You can find out more about this error model and how to work with it in the
            # [API Design Guide](https://cloud.google.com/apis/design/errors).
          &quot;details&quot;: [ # A list of messages that carry the error details.  There is a common set of
              # message types for APIs to use.
            {
              &quot;a_key&quot;: &quot;&quot;, # Properties of the object. Contains field @type with type URL.
            },
          ],
          &quot;message&quot;: &quot;A String&quot;, # A developer-facing error message, which should be in English. Any
              # user-facing error message should be localized and sent in the
              # google.rpc.Status.details field, or localized by the client.
          &quot;code&quot;: 42, # The status code, which should be an enum value of google.rpc.Code.
        },
        &quot;childSpanCount&quot;: 42, # Optional. The number of child spans that were generated while this span
            # was active. If set, allows implementation to detect missing child spans.
        &quot;stackTrace&quot;: { # A call stack appearing in a trace. # Stack trace captured at the start of the span.
          &quot;stackTraceHashId&quot;: &quot;A String&quot;, # The hash ID is used to conserve network bandwidth for duplicate
              # stack traces within a single trace.
              #
              # Often multiple spans will have identical stack traces.
              # The first occurrence of a stack trace should contain both the
              # `stackFrame` content and a value in `stackTraceHashId`.
              #
              # Subsequent spans within the same request can refer
              # to that stack trace by only setting `stackTraceHashId`.
          &quot;stackFrames&quot;: { # A collection of stack frames, which can be truncated. # Stack frames in this stack trace. A maximum of 128 frames are allowed.
            &quot;droppedFramesCount&quot;: 42, # The number of stack frames that were dropped because there
                # were too many stack frames.
                # If this value is 0, then no stack frames were dropped.
            &quot;frame&quot;: [ # Stack frames in this call stack.
              { # Represents a single stack frame in a stack trace.
                &quot;lineNumber&quot;: &quot;A String&quot;, # The line number in `file_name` where the function call appears.
                &quot;functionName&quot;: { # Represents a string that might be shortened to a specified length. # The fully-qualified name that uniquely identifies the function or
                    # method that is active in this frame (up to 1024 bytes).
                  &quot;value&quot;: &quot;A String&quot;, # The shortened string. For example, if the original string is 500
                      # bytes long and the limit of the string is 128 bytes, then
                      # `value` contains the first 128 bytes of the 500-byte string.
                      #
                      # Truncation always happens on a UTF8 character boundary. If there
                      # are multi-byte characters in the string, then the length of the
                      # shortened string might be less than the size limit.
                  &quot;truncatedByteCount&quot;: 42, # The number of bytes removed from the original string. If this
                      # value is 0, then the string was not shortened.
                },
                &quot;sourceVersion&quot;: { # Represents a string that might be shortened to a specified length. # The version of the deployed source code (up to 128 bytes).
                  &quot;value&quot;: &quot;A String&quot;, # The shortened string. For example, if the original string is 500
                      # bytes long and the limit of the string is 128 bytes, then
                      # `value` contains the first 128 bytes of the 500-byte string.
                      #
                      # Truncation always happens on a UTF8 character boundary. If there
                      # are multi-byte characters in the string, then the length of the
                      # shortened string might be less than the size limit.
                  &quot;truncatedByteCount&quot;: 42, # The number of bytes removed from the original string. If this
                      # value is 0, then the string was not shortened.
                },
                &quot;loadModule&quot;: { # Binary module. # The binary module from where the code was loaded.
                  &quot;buildId&quot;: { # Represents a string that might be shortened to a specified length. # A unique identifier for the module, usually a hash of its
                      # contents (up to 128 bytes).
                    &quot;value&quot;: &quot;A String&quot;, # The shortened string. For example, if the original string is 500
                        # bytes long and the limit of the string is 128 bytes, then
                        # `value` contains the first 128 bytes of the 500-byte string.
                        #
                        # Truncation always happens on a UTF8 character boundary. If there
                        # are multi-byte characters in the string, then the length of the
                        # shortened string might be less than the size limit.
                    &quot;truncatedByteCount&quot;: 42, # The number of bytes removed from the original string. If this
                        # value is 0, then the string was not shortened.
                  },
                  &quot;module&quot;: { # Represents a string that might be shortened to a specified length. # For example: main binary, kernel modules, and dynamic libraries
                      # such as libc.so, sharedlib.so (up to 256 bytes).
                    &quot;value&quot;: &quot;A String&quot;, # The shortened string. For example, if the original string is 500
                        # bytes long and the limit of the string is 128 bytes, then
                        # `value` contains the first 128 bytes of the 500-byte string.
                        #
                        # Truncation always happens on a UTF8 character boundary. If there
                        # are multi-byte characters in the string, then the length of the
                        # shortened string might be less than the size limit.
                    &quot;truncatedByteCount&quot;: 42, # The number of bytes removed from the original string. If this
                        # value is 0, then the string was not shortened.
                  },
                },
                &quot;columnNumber&quot;: &quot;A String&quot;, # The column number where the function call appears, if available.
                    # This is important in JavaScript because of its anonymous functions.
                &quot;originalFunctionName&quot;: { # Represents a string that might be shortened to a specified length. # An un-mangled function name, if `function_name` is
                    # [mangled](http://www.avabodh.com/cxxin/namemangling.html). The name can
                    # be fully-qualified (up to 1024 bytes).
                  &quot;value&quot;: &quot;A String&quot;, # The shortened string. For example, if the original string is 500
                      # bytes long and the limit of the string is 128 bytes, then
                      # `value` contains the first 128 bytes of the 500-byte string.
                      #
                      # Truncation always happens on a UTF8 character boundary. If there
                      # are multi-byte characters in the string, then the length of the
                      # shortened string might be less than the size limit.
                  &quot;truncatedByteCount&quot;: 42, # The number of bytes removed from the original string. If this
                      # value is 0, then the string was not shortened.
                },
                &quot;fileName&quot;: { # Represents a string that might be shortened to a specified length. # The name of the source file where the function call appears (up to 256
                    # bytes).
                  &quot;value&quot;: &quot;A String&quot;, # The shortened string. For example, if the original string is 500
                      # bytes long and the limit of the string is 128 bytes, then
                      # `value` contains the first 128 bytes of the 500-byte string.
                      #
                      # Truncation always happens on a UTF8 character boundary. If there
                      # are multi-byte characters in the string, then the length of the
                      # shortened string might be less than the size limit.
                  &quot;truncatedByteCount&quot;: 42, # The number of bytes removed from the original string. If this
                      # value is 0, then the string was not shortened.
                },
              },
            ],
          },
        },
        &quot;attributes&quot;: { # A set of attributes, each in the format `[KEY]:[VALUE]`. # A set of attributes on the span. You can have up to 32 attributes per
            # span.
          &quot;attributeMap&quot;: { # The set of attributes. Each attribute&#x27;s key can be up to 128 bytes
              # long. The value can be a string up to 256 bytes, a signed 64-bit integer,
              # or the Boolean values `true` and `false`. For example:
              #
              #     &quot;/instance_id&quot;: { &quot;string_value&quot;: { &quot;value&quot;: &quot;my-instance&quot; } }
              #     &quot;/http/request_bytes&quot;: { &quot;int_value&quot;: 300 }
              #     &quot;abc.com/myattribute&quot;: { &quot;bool_value&quot;: false }
            &quot;a_key&quot;: { # The allowed types for [VALUE] in a `[KEY]:[VALUE]` attribute.
              &quot;stringValue&quot;: { # Represents a string that might be shortened to a specified length. # A string up to 256 bytes long.
                &quot;value&quot;: &quot;A String&quot;, # The shortened string. For example, if the original string is 500
                    # bytes long and the limit of the string is 128 bytes, then
                    # `value` contains the first 128 bytes of the 500-byte string.
                    #
                    # Truncation always happens on a UTF8 character boundary. If there
                    # are multi-byte characters in the string, then the length of the
                    # shortened string might be less than the size limit.
                &quot;truncatedByteCount&quot;: 42, # The number of bytes removed from the original string. If this
                    # value is 0, then the string was not shortened.
              },
              &quot;intValue&quot;: &quot;A String&quot;, # A 64-bit signed integer.
              &quot;boolValue&quot;: True or False, # A Boolean value represented by `true` or `false`.
            },
          },
          &quot;droppedAttributesCount&quot;: 42, # The number of attributes that were discarded. Attributes can be discarded
              # because their keys are too long or because there are too many attributes.
              # If this value is 0 then all attributes are valid.
        },
        &quot;spanKind&quot;: &quot;A String&quot;, # 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.
        &quot;endTime&quot;: &quot;A String&quot;, # 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.
        &quot;startTime&quot;: &quot;A String&quot;, # 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&#x27;s application handler starts running.
        &quot;spanId&quot;: &quot;A String&quot;, # Required. The [SPAN_ID] portion of the span&#x27;s resource name.
        &quot;sameProcessAsParentSpan&quot;: True or False, # 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.
      },
    ],
  }

  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # A generic empty message that you can re-use to avoid defining duplicated
      # empty messages in your APIs. A typical example is to use it as the request
      # or the response type of an API method. For instance:
      #
      #     service Foo {
      #       rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty);
      #     }
      #
      # The JSON representation for `Empty` is empty JSON object `{}`.
  }</pre>
</div>

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