Class: OneApm::TransactionState

Inherits:
Object
  • Object
show all
Defined in:
lib/one_apm/transaction/transaction_state.rb

Overview

This is THE location to store thread local information during a transaction Need a new piece of data? Add a method here, NOT a new thread local variable.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ TransactionState

Returns a new instance of TransactionState.

[View source]

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# File 'lib/one_apm/transaction/transaction_state.rb', line 33

def initialize
  @untraced = []
  @traced_method_stack =OneApm::Support::TracedMethodStack.new
  @current_transaction = nil
end

Instance Attribute Details

#busy_entries ⇒ Object

Busy calculator


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# File 'lib/one_apm/transaction/transaction_state.rb', line 140

def busy_entries
  @busy_entries
end

#client_cross_app_id ⇒ Object

Cross app tracing Because we need values from headers before the transaction actually starts


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# File 'lib/one_apm/transaction/transaction_state.rb', line 67

def client_cross_app_id
  @client_cross_app_id
end

#current_transaction ⇒ Object (readonly)

Current transaction stack and sample building


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# File 'lib/one_apm/transaction/transaction_state.rb', line 90

def current_transaction
  @current_transaction
end

#is_cross_app_caller ⇒ Object

Cross app tracing Because we need values from headers before the transaction actually starts


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# File 'lib/one_apm/transaction/transaction_state.rb', line 67

def is_cross_app_caller
  @is_cross_app_caller
end

#record_sql ⇒ Object

TT’s and SQL


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# File 'lib/one_apm/transaction/transaction_state.rb', line 129

def record_sql
  @record_sql
end

#record_tt ⇒ Object

TT’s and SQL


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# File 'lib/one_apm/transaction/transaction_state.rb', line 129

def record_tt
  @record_tt
end

#referring_transaction_info ⇒ Object

Cross app tracing Because we need values from headers before the transaction actually starts


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# File 'lib/one_apm/transaction/transaction_state.rb', line 67

def referring_transaction_info
  @referring_transaction_info
end

#request ⇒ Object

Request data


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# File 'lib/one_apm/transaction/transaction_state.rb', line 82

def request
  @request
end

#sql_sampler_transaction_data ⇒ Object

Sql Sampler Transaction Data


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# File 'lib/one_apm/transaction/transaction_state.rb', line 143

def sql_sampler_transaction_data
  @sql_sampler_transaction_data
end

#traced_method_stack ⇒ Object (readonly)

Scope stack tracking from OneApm::StatsEngine::Transactions Should not be nil–this class manages its initialization and resetting


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# File 'lib/one_apm/transaction/transaction_state.rb', line 147

def traced_method_stack
  @traced_method_stack
end

#transaction_sample_builder ⇒ Object

Returns the value of attribute transaction_sample_builder.


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# File 'lib/one_apm/transaction/transaction_state.rb', line 91

def transaction_sample_builder
  @transaction_sample_builder
end

#untraced ⇒ Object

Execution tracing on current thread


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# File 'lib/one_apm/transaction/transaction_state.rb', line 114

def untraced
  @untraced
end

Class Method Details

.tl_clear_for_testing ⇒ Object

[View source]

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# File 'lib/one_apm/transaction/transaction_state.rb', line 29

def self.tl_clear_for_testing
  Thread.current[:oneapm_transaction_state] = nil
end

.tl_get ⇒ Object

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# File 'lib/one_apm/transaction/transaction_state.rb', line 10

def self.tl_get
  tl_state_for(Thread.current)
end

.tl_state_for(thread) ⇒ Object

This method should only be used by TransactionState for access to the current thread’s state or to provide read-only accessors for other threads

If ever exposed, this requires additional synchronization

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# File 'lib/one_apm/transaction/transaction_state.rb', line 18

def self.tl_state_for(thread)
  state = thread[:oneapm_transaction_state]

  if state.nil?
    state = TransactionState.new
    thread[:oneapm_transaction_state] = state
  end

  state
end

Instance Method Details

#in_background_transaction? ⇒ Boolean

Returns:

  • (Boolean)
[View source]

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# File 'lib/one_apm/transaction/transaction_state.rb', line 105

def in_background_transaction?
  !current_transaction.nil? && !current_transaction.recording_web_transaction?
end

#in_web_transaction? ⇒ Boolean

Returns:

  • (Boolean)
[View source]

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# File 'lib/one_apm/transaction/transaction_state.rb', line 109

def in_web_transaction?
  !current_transaction.nil? && current_transaction.recording_web_transaction?
end

#is_cross_app? ⇒ Boolean

Returns:

  • (Boolean)
[View source]

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# File 'lib/one_apm/transaction/transaction_state.rb', line 77

def is_cross_app?
  is_cross_app_caller? || is_cross_app_callee?
end

#is_cross_app_callee? ⇒ Boolean

Returns:

  • (Boolean)
[View source]

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# File 'lib/one_apm/transaction/transaction_state.rb', line 73

def is_cross_app_callee?
  referring_transaction_info != nil
end

#is_cross_app_caller? ⇒ Boolean

Returns:

  • (Boolean)
[View source]

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# File 'lib/one_apm/transaction/transaction_state.rb', line 69

def is_cross_app_caller?
  @is_cross_app_caller
end

#is_execution_traced? ⇒ Boolean

Returns:

  • (Boolean)
[View source]

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# File 'lib/one_apm/transaction/transaction_state.rb', line 124

def is_execution_traced?
  @untraced.nil? || @untraced.last != false
end

#is_sql_recorded? ⇒ Boolean

Returns:

  • (Boolean)
[View source]

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# File 'lib/one_apm/transaction/transaction_state.rb', line 135

def is_sql_recorded?
  @record_sql != false
end

#is_transaction_traced? ⇒ Boolean

Returns:

  • (Boolean)
[View source]

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# File 'lib/one_apm/transaction/transaction_state.rb', line 131

def is_transaction_traced?
  @record_tt != false
end

#pop_traced ⇒ Object

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# File 'lib/one_apm/transaction/transaction_state.rb', line 120

def pop_traced
  @untraced.pop if @untraced
end

#push_traced(should_trace) ⇒ Object

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# File 'lib/one_apm/transaction/transaction_state.rb', line 116

def push_traced(should_trace)
  @untraced << should_trace
end

#request_guid ⇒ Object

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# File 'lib/one_apm/transaction/transaction_state.rb', line 84

def request_guid
  return nil unless current_transaction
  current_transaction.guid
end

#reset(transaction = nil) ⇒ Object

This starts the timer for the transaction.

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# File 'lib/one_apm/transaction/transaction_state.rb', line 40

def reset(transaction=nil)
  # We purposefully don't reset @untraced, @record_tt and @record_sql
  # since those are managed by OneApm::Manager.disable_* calls explicitly
  # and (more importantly) outside the scope of a transaction

  @timings = nil
  @request = nil
  @current_transaction = transaction

  @traced_method_stack.clear

  @is_cross_app_caller = false
  @client_cross_app_id = nil
  @referring_transaction_info = nil

  @transaction_sample_builder = nil
  @sql_sampler_transaction_data = nil

  @busy_entries = 0
end

#timings ⇒ Object

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# File 'lib/one_apm/transaction/transaction_state.rb', line 61

def timings
  @timings ||= TransactionTimings.new(transaction_queue_time, transaction_start_time, transaction_name)
end

#transaction_name ⇒ Object

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# File 'lib/one_apm/transaction/transaction_state.rb', line 101

def transaction_name
  current_transaction.nil? ? nil : current_transaction.best_name
end

#transaction_queue_time ⇒ Object

[View source]

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# File 'lib/one_apm/transaction/transaction_state.rb', line 97

def transaction_queue_time
  current_transaction.nil? ? 0.0 : current_transaction.queue_time
end

#transaction_start_time ⇒ Object

[View source]

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# File 'lib/one_apm/transaction/transaction_state.rb', line 93

def transaction_start_time
  current_transaction.start_time if current_transaction
end