Module: TingYun::Agent::Datastore::MetricHelper

Defined in:
lib/ting_yun/agent/datastore/metric_helper.rb

Constant Summary collapse

ALL_WEB = 
"AllWeb".freeze
ALL_BACKGROUND = 
"AllBackground".freeze
ALL = 
"All".freeze
NOSQL = 
%w(MongoDB Redis Memcached).freeze
CACHE = 
%w(Redis Memcached).freeze

Class Method Summary collapse

Class Method Details

.checkNosql(product) ⇒ Object 



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# File 'lib/ting_yun/agent/datastore/metric_helper.rb', line 17

def self.checkNosql(product)
  NOSQL.include?(product)
end

.include_database?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ting_yun/agent/datastore/metric_helper.rb', line 63

def self.include_database?(name)
  CACHE.include?(name)
end

.metric_name(product, collection, operation) ⇒ Object 



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# File 'lib/ting_yun/agent/datastore/metric_helper.rb', line 21

def self.metric_name(product, collection, operation)
  if checkNosql(product)
      "#{product}/#{collection}/#{operation}"
  else
    "Database #{product}/#{collection}/#{operation}"
  end
end

.metrics_for(product, operation, collection = nil, generic_product = nil) ⇒ Object 



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# File 'lib/ting_yun/agent/datastore/metric_helper.rb', line 39

def self.metrics_for(product, operation, collection = nil, generic_product = nil)
  operation = operation.to_s.upcase
  if overrides = overridden_operation_and_collection   # [method, model_name, product]
    if should_override?(overrides, product, generic_product)
      operation  = overrides[0] || operation
      collection = overrides[1] || collection
    end
  end
  metrics  = [operation]
  if TingYun::Agent::Transaction.recording_web_transaction?
    metrics = metrics + [ALL_WEB,ALL]
  else
    metrics = metrics + [ALL_BACKGROUND,ALL]
  end


  metrics = metrics.map do |suffix|
    product_suffixed_rollup(product,suffix)
  end

  metrics.unshift metric_name(product, collection, operation) if collection
  metrics
end

.overridden_operation_and_collection ⇒ Object

Allow Transaction#with_database_metric_name to override our collection and operation



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# File 'lib/ting_yun/agent/datastore/metric_helper.rb', line 68

def self.overridden_operation_and_collection #THREAD_LOCAL_ACCESS
  state = TingYun::Agent::TransactionState.tl_get
  txn   = state.current_transaction
  txn ? txn.instrumentation_state[:datastore_override] : nil
end

.product_suffixed_rollup(product, suffix) ⇒ Object 



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# File 'lib/ting_yun/agent/datastore/metric_helper.rb', line 29

def self.product_suffixed_rollup(product,suffix)
  if checkNosql(product)
    "#{product}/NULL/#{suffix}"
  else
    "Database #{product}/NULL/#{suffix}"
  end
end

.should_override?(overrides, product, generic_product) ⇒ Boolean

If the override declared a product affiliation, abide by that ActiveRecord has database-specific product names, so we recognize it by the generic_product it passes.

Returns:

  • (Boolean) 


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# File 'lib/ting_yun/agent/datastore/metric_helper.rb', line 77

def self.should_override?(overrides, product, generic_product)
  override_product = overrides[2]

  override_product.nil? ||
      override_product == product ||
      override_product == generic_product
end