Class: Currency::Exchange::Rate::Source::Failover
- Defined in:
- lib/currency/exchange/rate/source/failover.rb
Overview
Gets Rates from primary source, if primary fails, attempts secondary source.
Instance Attribute Summary collapse
-
#primary ⇒ Object
Primary rate source.
-
#secondary ⇒ Object
Secondary rate source if primary fails.
Instance Method Summary collapse
Instance Attribute Details
#primary ⇒ Object
Primary rate source.
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# File 'lib/currency/exchange/rate/source/failover.rb', line 11 def primary @primary end |
#secondary ⇒ Object
Secondary rate source if primary fails.
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# File 'lib/currency/exchange/rate/source/failover.rb', line 14 def secondary @secondary end |
Instance Method Details
#clear_rates ⇒ Object
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# File 'lib/currency/exchange/rate/source/failover.rb', line 21 def clear_rates @primary.clear_rates @secondary.clear_rates super end |
#get_rate(c1, c2, time) ⇒ Object
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# File 'lib/currency/exchange/rate/source/failover.rb', line 28 def get_rate(c1, c2, time) rate = nil # Try primary. err = nil begin rate = @primary.get_rate(c1, c2, time) rescue Object => e err = e end if rate == nil || err $stderr.puts "Failover: primary failed for get_rate(#{c1}, #{c2}, #{time}) : #{err.inspect}" rate = @secondary.get_rate(c1, c2, time) end unless rate raise Currency::Exception::UnknownRate, [ "Failover: secondary failed for get_rate(#{c1}, #{c2}, #{time})", :c1, c1, :c2, c2, :time, time, ] end rate end |
#name ⇒ Object
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# File 'lib/currency/exchange/rate/source/failover.rb', line 16 def name "failover(#{primary.name}, #{secondary.name})" end |