Class: SlimScrooge::Callsites

Inherits:
Object
  • Object
show all
Defined in:
lib/slim_scrooge/callsites.rb

Overview

Contains the complete list of callsites

Constant Summary collapse

CallsitesMutex = 
Mutex.new
ScroogeCallsiteSample = 
1..16
@@callsites = 
{}

Class Method Summary collapse

Class Method Details

.[](callsite_key) ⇒ Object

Return the callsite for this key



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# File 'lib/slim_scrooge/callsites.rb', line 20

def [](callsite_key)
  @@callsites[callsite_key]
end

.add_callsite(callsite_key, callsite) ⇒ Object

Add a new callsite, wrap in a mutex for safety



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# File 'lib/slim_scrooge/callsites.rb', line 55

def add_callsite(callsite_key, callsite)
  CallsitesMutex.synchronize do
    @@callsites[callsite_key] = callsite
  end
end

.add_seen_column(callsite, seen_column) ⇒ Object

Record that a column was accessed, wrap in a mutex for safety



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# File 'lib/slim_scrooge/callsites.rb', line 63

def add_seen_column(callsite, seen_column)
  CallsitesMutex.synchronize do
    callsite.seen_columns << seen_column
  end
end

.callsite_key(sql) ⇒ Object

Generate a key string - uses the portion of the query before the WHERE together with the callsite_hash generated by callsite_hash.c



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# File 'lib/slim_scrooge/callsites.rb', line 37

def callsite_key(sql)
  callsite_hash + sql.gsub(/\sWHERE.*/i, "").hash
end

.create(sql, callsite_key, name) ⇒ Object

Create a new callsite



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# File 'lib/slim_scrooge/callsites.rb', line 43

def create(sql, callsite_key, name)
  begin
    model_class = name.split.first.constantize
  rescue NameError, NoMethodError
    add_callsite(callsite_key, nil)
  else
    add_callsite(callsite_key, Callsite.make_callsite(model_class, sql))
  end
end

.has_key?(callsite_key) ⇒ Boolean

Whether we have encountered a callsite before

Returns:

  • (Boolean) 


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# File 'lib/slim_scrooge/callsites.rb', line 14

def has_key?(callsite_key)
  @@callsites.has_key?(callsite_key)
end