Class: Chronos::Adapters::ThreadLocalContextStore

Inherits:
Object
  • Object
show all
Defined in:
lib/chronos/adapters/thread_local_context_store.rb

Overview

Stores execution context in the current Ruby thread.

Examples:

store.with_context(:request_id => "r1") { store.get }

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ThreadLocalContextStore

Returns a new instance of ThreadLocalContextStore.



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# File 'lib/chronos/adapters/thread_local_context_store.rb', line 16

def initialize
  @key = "chronos_context_#{object_id}".freeze
end

Instance Method Details

#clear ⇒ Object 



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# File 'lib/chronos/adapters/thread_local_context_store.rb', line 30

def clear
  Thread.current[@key] = nil
  nil
end

#get ⇒ Object 



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# File 'lib/chronos/adapters/thread_local_context_store.rb', line 20

def get
  Thread.current[@key] || {}
end

#set(context) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/chronos/adapters/thread_local_context_store.rb', line 24

def set(context)
  raise ArgumentError, "context must be a Hash" unless context.is_a?(Hash)

  Thread.current[@key] = context
end

#with_context(context) ⇒ Object 



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# File 'lib/chronos/adapters/thread_local_context_store.rb', line 35

def with_context(context)
  previous = Thread.current[@key]
  set(merge_context(previous || {}, context))
  yield
ensure
  previous ? Thread.current[@key] = previous : clear
end