Class: Datadog::Tracing::TraceDigest

Inherits:
Object
  • Object
show all
Defined in:
lib/datadog/tracing/trace_digest.rb

Overview

Trace digest that represents the important parts of an active trace. Used to propagate context and continue traces across execution boundaries.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(span_id: nil, span_name: nil, span_resource: nil, span_service: nil, span_type: nil, trace_distributed_tags: nil, trace_hostname: nil, trace_id: nil, trace_name: nil, trace_origin: nil, trace_process_id: nil, trace_resource: nil, trace_runtime_id: nil, trace_sampling_priority: nil, trace_service: nil, trace_distributed_id: nil, trace_flags: nil, trace_state: nil, trace_state_unknown_fields: nil) ⇒ TraceDigest

Returns a new instance of TraceDigest.



101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
 
# File 'lib/datadog/tracing/trace_digest.rb', line 101

def initialize(
  span_id: nil,
  span_name: nil,
  span_resource: nil,
  span_service: nil,
  span_type: nil,
  trace_distributed_tags: nil,
  trace_hostname: nil,
  trace_id: nil,
  trace_name: nil,
  trace_origin: nil,
  trace_process_id: nil,
  trace_resource: nil,
  trace_runtime_id: nil,
  trace_sampling_priority: nil,
  trace_service: nil,
  trace_distributed_id: nil,
  trace_flags: nil,
  trace_state: nil,
  trace_state_unknown_fields: nil
)
  @span_id = span_id
  @span_name = span_name && span_name.dup.freeze
  @span_resource = span_resource && span_resource.dup.freeze
  @span_service = span_service && span_service.dup.freeze
  @span_type = span_type && span_type.dup.freeze
  @trace_distributed_tags = trace_distributed_tags && trace_distributed_tags.dup.freeze
  @trace_hostname = trace_hostname && trace_hostname.dup.freeze
  @trace_id = trace_id
  @trace_name = trace_name && trace_name.dup.freeze
  @trace_origin = trace_origin && trace_origin.dup.freeze
  @trace_process_id = trace_process_id
  @trace_resource = trace_resource && trace_resource.dup.freeze
  @trace_runtime_id = trace_runtime_id && trace_runtime_id.dup.freeze
  @trace_sampling_priority = trace_sampling_priority
  @trace_service = trace_service && trace_service.dup.freeze
  @trace_distributed_id = trace_distributed_id
  @trace_flags = trace_flags
  @trace_state = trace_state && trace_state.dup.freeze
  @trace_state_unknown_fields = trace_state_unknown_fields && trace_state_unknown_fields.dup.freeze

  freeze
end

Instance Attribute Details

#span_id ⇒ Integer (readonly)

Datadog id for the currently active span.

Returns:

  • (Integer) 


80
81
82
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

def span_id
  @span_id
end

#span_name ⇒ String (readonly)

The operation name of the currently active span.

Returns:

  • (String) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#span_resource ⇒ String (readonly)

The resource name of the currently active span.

Returns:

  • (String) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#span_service ⇒ String (readonly)

The service of the currently active span.

Returns:

  • (String) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#span_type ⇒ String (readonly)

The type of the currently active span.

Returns:

  • (String) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_distributed_id ⇒ Integer (readonly)

The trace id extracted from a distributed context, if different from trace_id.

The current use case is when the distributed context has a trace id integer larger than 64-bit: This attribute will preserve the original id, while trace_id will only contain the lower 64 bits.

Returns:

  • (Integer)

See Also:



80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_distributed_tags ⇒ Hash<String,String> (readonly)

Datadog-specific tags that support richer distributed tracing association.

Returns:

  • (Hash<String,String>) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_flags ⇒ Integer (readonly)

The W3C "trace-flags" extracted from a distributed context. This field is an 8-bit unsigned integer.

Returns:

  • (Integer)

See Also:



80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_hostname ⇒ String (readonly)

The hostname of the currently active trace. Use to attribute traces to hosts.

Returns:

  • (String) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_id ⇒ Integer (readonly)

Datadog id for the currently active trace.

Returns:

  • (Integer) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_name ⇒ Integer (readonly)

Operation name for the currently active trace.

Returns:

  • (Integer) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_origin ⇒ String (readonly)

Datadog-specific attribution of this trace's creation.

Returns:

  • (String) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_process_id ⇒ Integer (readonly)

The OS-specific process id.

Returns:

  • (Integer) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_resource ⇒ String (readonly)

The resource name of the currently active trace.

Returns:

  • (String) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_runtime_id ⇒ String (readonly)

Unique id to this Ruby process. Used to differentiate traces coming from child processes forked from same parent process.

Returns:

  • (String) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_sampling_priority ⇒ Integer (readonly)

Datadog-specific sampling decision for the currently active trace.

Returns:

  • (Integer) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_service ⇒ String (readonly)

The service of the currently active trace.

Returns:

  • (String) 


80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_state ⇒ String (readonly)

The W3C "tracestate" extracted from a distributed context. This field is a string representing vendor-specific distribution data. The dd= entry is removed from trace_state as its value is dynamically calculated on every propagation injection.

Returns:

  • (String)

See Also:



80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields

#trace_state_unknown_fields ⇒ Object (readonly) 



80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/datadog/tracing/trace_digest.rb', line 80

attr_reader \
:span_id,
:span_name,
:span_resource,
:span_service,
:span_type,
:trace_distributed_tags,
:trace_hostname,
:trace_id,
:trace_name,
:trace_origin,
:trace_process_id,
:trace_resource,
:trace_runtime_id,
:trace_sampling_priority,
:trace_service,
:trace_distributed_id,
:trace_flags,
:trace_state,
:trace_state_unknown_fields