Class: OpenCensus::Trace::Span
- Inherits:
-
Object
- Object
- OpenCensus::Trace::Span
- Defined in:
- lib/opencensus/trace/span.rb
Overview
Span represents a span in a trace record. Spans are contained in a trace and arranged in a forest. That is, each span may be a root span or have a parent span, and may have zero or more children.
Instance Attribute Summary collapse
-
#attributes ⇒ Hash<String, (TruncatableString, Integer, Boolean)>
readonly
The properties of this span.
-
#child_span_count ⇒ Integer?
readonly
An optional number of child spans that were generated while this span was active.
-
#dropped_annotations_count ⇒ Integer
readonly
The number of dropped annotations in all the included time events.
-
#dropped_attributes_count ⇒ Integer
readonly
The number of attributes that were discarded.
-
#dropped_frames_count ⇒ Integer
readonly
The number of stack frames that were dropped because there were too many stack frames.
-
#dropped_links_count ⇒ Integer
readonly
The number of dropped links after the maximum size was enforced If the value is 0, then no links were dropped.
-
#dropped_message_events_count ⇒ Integer
readonly
The number of dropped message events in all the included time events.
-
#end_time ⇒ Time
readonly
The ending timestamp of this span in UTC.
-
#links ⇒ Array<Link>
readonly
The included links.
-
#name ⇒ TruncatableString
readonly
The name of this span.
-
#parent_span_id ⇒ String
readonly
The ‘span_id` of this span’s parent span.
-
#same_process_as_parent_span ⇒ boolean?
readonly
A highly recommended but not required flag that identifies when a trace crosses a process boundary.
-
#span_id ⇒ String
readonly
A unique identifier for a span within a trace, assigned when the span is created.
-
#stack_trace ⇒ Array<Thread::Backtrace::Location>
readonly
A stack trace captured at the start of the span.
-
#stack_trace_hash_id ⇒ Integer
readonly
A hash of the stack trace.
-
#start_time ⇒ Time
readonly
The starting timestamp of this span in UTC.
-
#status ⇒ Status?
readonly
An optional final status for this span.
-
#time_events ⇒ Array<TimeEvent>
readonly
The included time events.
-
#trace_id ⇒ String
readonly
A unique identifier for a trace.
Instance Method Summary collapse
-
#initialize(trace_id, span_id, name, start_time, end_time, parent_span_id: "", attributes: {}, dropped_attributes_count: 0, stack_trace: [], dropped_frames_count: 0, time_events: [], dropped_annotations_count: 0, dropped_message_events_count: 0, links: [], dropped_links_count: 0, status: nil, same_process_as_parent_span: nil, child_span_count: nil) ⇒ Span
constructor
Create an empty Span object.
Constructor Details
#initialize(trace_id, span_id, name, start_time, end_time, parent_span_id: "", attributes: {}, dropped_attributes_count: 0, stack_trace: [], dropped_frames_count: 0, time_events: [], dropped_annotations_count: 0, dropped_message_events_count: 0, links: [], dropped_links_count: 0, status: nil, same_process_as_parent_span: nil, child_span_count: nil) ⇒ Span
Create an empty Span object.
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# File 'lib/opencensus/trace/span.rb', line 179 def initialize trace_id, span_id, name, start_time, end_time, parent_span_id: "", attributes: {}, dropped_attributes_count: 0, stack_trace: [], dropped_frames_count: 0, time_events: [], dropped_annotations_count: 0, dropped_message_events_count: 0, links: [], dropped_links_count: 0, status: nil, same_process_as_parent_span: nil, child_span_count: nil @name = name @trace_id = trace_id @span_id = span_id @parent_span_id = parent_span_id @start_time = start_time @end_time = end_time @attributes = attributes @dropped_attributes_count = dropped_attributes_count @stack_trace = stack_trace @stack_trace_hash_id = [stack_trace, dropped_frames_count].hash @stack_trace_hash_id = -1 if @stack_trace_hash_id.zero? @dropped_frames_count = dropped_frames_count @time_events = time_events @dropped_annotations_count = dropped_annotations_count @dropped_message_events_count = @links = links @dropped_links_count = dropped_links_count @status = status @same_process_as_parent_span = same_process_as_parent_span @child_span_count = child_span_count end |
Instance Attribute Details
#attributes ⇒ Hash<String, (TruncatableString, Integer, Boolean)> (readonly)
The properties of this span.
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# File 'lib/opencensus/trace/span.rb', line 76 def attributes @attributes end |
#child_span_count ⇒ Integer? (readonly)
An optional number of child spans that were generated while this span was active. If set, allows an implementation to detect missing child spans.
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# File 'lib/opencensus/trace/span.rb', line 172 def child_span_count @child_span_count end |
#dropped_annotations_count ⇒ Integer (readonly)
The number of dropped annotations in all the included time events. If the value is 0, then no annotations were dropped.
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# File 'lib/opencensus/trace/span.rb', line 124 def dropped_annotations_count @dropped_annotations_count end |
#dropped_attributes_count ⇒ Integer (readonly)
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 no attributes were dropped.
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# File 'lib/opencensus/trace/span.rb', line 85 def dropped_attributes_count @dropped_attributes_count end |
#dropped_frames_count ⇒ Integer (readonly)
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.
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# File 'lib/opencensus/trace/span.rb', line 109 def dropped_frames_count @dropped_frames_count end |
#dropped_links_count ⇒ Integer (readonly)
The number of dropped links after the maximum size was enforced If the value is 0, then no links were dropped.
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# File 'lib/opencensus/trace/span.rb', line 147 def dropped_links_count @dropped_links_count end |
#dropped_message_events_count ⇒ Integer (readonly)
The number of dropped message events in all the included time events. If the value is 0, then no message events were dropped.
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# File 'lib/opencensus/trace/span.rb', line 132 def @dropped_message_events_count end |
#end_time ⇒ Time (readonly)
The ending timestamp of this span in UTC.
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# File 'lib/opencensus/trace/span.rb', line 69 def end_time @end_time end |
#links ⇒ Array<Link> (readonly)
The included links.
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# File 'lib/opencensus/trace/span.rb', line 139 def links @links end |
#name ⇒ TruncatableString (readonly)
The name of this span.
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# File 'lib/opencensus/trace/span.rb', line 55 def name @name end |
#parent_span_id ⇒ String (readonly)
The ‘span_id` of this span’s parent span. If this is a root span, then this field must be empty. The ID is an 8-byte value represented as a hexadecimal string.
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# File 'lib/opencensus/trace/span.rb', line 48 def parent_span_id @parent_span_id end |
#same_process_as_parent_span ⇒ boolean? (readonly)
A highly recommended but not required flag that identifies when a trace crosses a process boundary. True when the parent_span belongs to the same process as the current span.
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# File 'lib/opencensus/trace/span.rb', line 163 def same_process_as_parent_span @same_process_as_parent_span end |
#span_id ⇒ String (readonly)
A unique identifier for a span within a trace, assigned when the span is created. The ID is an 8-byte value represented as a hexadecimal string.
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# File 'lib/opencensus/trace/span.rb', line 39 def span_id @span_id end |
#stack_trace ⇒ Array<Thread::Backtrace::Location> (readonly)
A stack trace captured at the start of the span.
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# File 'lib/opencensus/trace/span.rb', line 92 def stack_trace @stack_trace end |
#stack_trace_hash_id ⇒ Integer (readonly)
A hash of the stack trace. This may be used by exporters to identify duplicate stack traces transmitted in the same request; only one copy of the actual data needs to be sent.
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# File 'lib/opencensus/trace/span.rb', line 101 def stack_trace_hash_id @stack_trace_hash_id end |
#start_time ⇒ Time (readonly)
The starting timestamp of this span in UTC.
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# File 'lib/opencensus/trace/span.rb', line 62 def start_time @start_time end |
#status ⇒ Status? (readonly)
An optional final status for this span.
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# File 'lib/opencensus/trace/span.rb', line 154 def status @status end |
#time_events ⇒ Array<TimeEvent> (readonly)
The included time events.
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# File 'lib/opencensus/trace/span.rb', line 116 def time_events @time_events end |
#trace_id ⇒ String (readonly)
A unique identifier for a trace. All spans from the same trace share the same ‘trace_id`. The ID is a 16-byte value represented as a hexadecimal string.
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# File 'lib/opencensus/trace/span.rb', line 30 def trace_id @trace_id end |