Cloud Trace API - Class Google::Cloud::Trace::TraceRecord (v0.44.0)

Reference documentation and code samples for the Cloud Trace API class Google::Cloud::Trace::TraceRecord.

Trace represents an entire trace record.

A trace has an ID and contains a forest of spans. The trace object methods may be used to walk or manipulate the set of spans.

Inherits

  • Object

Example

require "google/cloud/trace"

env = {}
trace_context = Stackdriver::Core::TraceContext.parse_rack_env env

trace = Google::Cloud::Trace::TraceRecord.new "my-project",
                                              trace_context
span = trace.create_span "root_span"
subspan = span.create_span "subspan"

trace_proto = trace.to_grpc

Methods

.from_grpc

def self.from_grpc(trace_proto) -> Trace, nil

Create a new Trace object from a trace protobuf.

Parameter
  • trace_proto (Google::Cloud::Trace::V1::Trace) — The trace protobuf from the V1 gRPC Trace API.
Returns
  • (Trace, nil) — A corresponding Trace object, or nil if the proto does not represent an existing trace object.

#==

def ==(other) -> Boolean
Alias Of: #eql?

Standard value equality check for this object.

Parameter
  • other (Object) — Object to compare with
Returns
  • (Boolean)

#all_spans

def all_spans() -> Array{TraceSpan}

Returns an array of all spans in this trace, not in any particular order

Returns
  • (Array{TraceSpan})

#create_span

def create_span(name, span_id: nil, parent_span_id: 0, kind: SpanKind::UNSPECIFIED, start_time: nil, end_time: nil, labels: {}) -> TraceSpan

Creates a new span in this trace.

Parameters
  • name (String) — The name of the span.
  • span_id (Integer) (defaults to: nil) — The numeric ID of the span, or nil to generate a new random unique ID. Optional (defaults to nil).
  • parent_span_id (Integer) (defaults to: 0) — The span ID of the parent span, or 0 if this should be a new root span within the context. Note that a root span would not necessarily end up with a parent ID of 0 if the trace context specifies a different context span ID. Optional (defaults to 0).
  • kind (SpanKind) (defaults to: SpanKind::UNSPECIFIED) — The kind of span. Optional.
  • start_time (Time) (defaults to: nil) — The starting timestamp, or nil if not yet specified. Optional (defaults to nil).
  • end_time (Time) (defaults to: nil) — The ending timestamp, or nil if not yet specified. Optional (defaults to nil).
  • labels (Hash{String=>String}) (defaults to: {}) — The span properties. Optional (defaults to empty).
Returns
  • (TraceSpan) — The created span.
Example 
require "google/cloud/trace"

trace_record = Google::Cloud::Trace::TraceRecord.new "my-project"
span = trace_record.create_span "root_span"

#eql?

def eql?(other) -> Boolean
Aliases

Standard value equality check for this object.

Parameter
  • other (Object) — Object to compare with
Returns
  • (Boolean)

#in_span

def in_span(name, kind: SpanKind::UNSPECIFIED, labels: {}) -> TraceSpan

Creates a root span around the given block. Automatically populates the start and end timestamps. The span (with start time but not end time populated) is yielded to the block.

Parameters
  • name (String) — The name of the span.
  • kind (SpanKind) (defaults to: SpanKind::UNSPECIFIED) — The kind of span. Optional.
  • labels (Hash{String=>String}) (defaults to: {}) — The span properties. Optional (defaults to empty).
Returns
  • (TraceSpan) — The created span.
Example 
require "google/cloud/trace"

trace_record = Google::Cloud::Trace::TraceRecord.new "my-project"
trace_record.in_span "root_span" do |span|
  # Do stuff...
end

#initialize

def initialize(project_id, trace_context = nil, span_id_generator: nil) -> TraceRecord

Create an empty Trace object. If a trace context is provided, it is used to locate this trace within that context.

Parameters
  • project_id (String) — The ID of the project containing this trace.
  • trace_context (Stackdriver::Core::TraceContext) — The context within which to locate this trace (i.e. sets the trace ID and the context parent span, if present.) If no context is provided, a new trace with a new trace ID is created.
Returns

#project

def project() -> String
Alias Of: #project_id

The project ID for this trace.

Returns
  • (String)

#project_id

def project_id() -> String
Aliases

The project ID for this trace.

Returns
  • (String)

#root_spans

def root_spans() -> Array{TraceSpan}

Returns an array of all root spans in this trace, not in any particular order

Returns
  • (Array{TraceSpan})

#to_grpc

def to_grpc() -> Google::Cloud::Trace::V1::Trace

Convert this Trace object to an equivalent Trace protobuf suitable for the V1 gRPC Trace API.

Returns
  • (Google::Cloud::Trace::V1::Trace) — The generated protobuf.

#trace_context

def trace_context() -> Stackdriver::Core::TraceContext

The context for this trace.

Returns
  • (Stackdriver::Core::TraceContext)

#trace_id

def trace_id() -> String

The ID string for the trace.

Returns
  • (String)