Class: HeartbeatRails::Configuration

Inherits:
Object
  • Object
show all
Defined in:
lib/heartbeat_rails/configuration.rb

Constant Summary collapse

DEFAULT_MOUNTPOINT =

Default mountpoint for engine

'/heartbeat'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data = {}) ⇒ Configuration

Returns a new instance of Configuration.



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# File 'lib/heartbeat_rails/configuration.rb', line 13

def initialize(data={})
  @data = {}
  @monitors = {}
  @mountpoint = DEFAULT_MOUNTPOINT
  @mount_mode = :append
  update!(data)
  load_default_monitors
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(sym, *args) ⇒ Object 



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# File 'lib/heartbeat_rails/configuration.rb', line 36

def method_missing(sym, *args)
  if sym.to_s =~ /(.+)=$/
    self[$1] = args.first
  else
    self[sym]
  end
end

Instance Attribute Details

#monitors ⇒ Object

Returns the value of attribute monitors.



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# File 'lib/heartbeat_rails/configuration.rb', line 11

def monitors
  @monitors
end

#mountpoint ⇒ Object (readonly)

used in railtie to read where to mount the engine



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# File 'lib/heartbeat_rails/configuration.rb', line 9

def mountpoint
  @mountpoint
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/heartbeat_rails/configuration.rb', line 28

def [](key)
  @data[key.to_sym]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/heartbeat_rails/configuration.rb', line 32

def []=(key, value)
  @data[key.to_sym] = value
end

#append_route! ⇒ Object 



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# File 'lib/heartbeat_rails/configuration.rb', line 61

def append_route!
  @mount_mode = :append
end

#automount? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/heartbeat_rails/configuration.rb', line 53

def automount?
  !!@mount_mode
end

#dont_mount! ⇒ Object 



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# File 'lib/heartbeat_rails/configuration.rb', line 69

def dont_mount!
  @mount_mode = nil
end

#load_default_monitors ⇒ Object 



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# File 'lib/heartbeat_rails/configuration.rb', line 73

def load_default_monitors
  if defined?(ActiveRecord::Base)
    monitor('database') do
      # Delegate activeness check to actual AR implementation
      # in MySQL it would call mysql.ping in postgres it fallback to SELECT 1
      ActiveRecord::Base.connection.active?
    end
  end
end

#monitor(label, &block) ⇒ Object 



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# File 'lib/heartbeat_rails/configuration.rb', line 44

def monitor(label, &block)
  @monitors[label.to_s] = block
end

#mount_at(mountpoint) ⇒ Object

Configure where the engine should be mounted



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# File 'lib/heartbeat_rails/configuration.rb', line 49

def mount_at(mountpoint)
  @mountpoint = mountpoint
end

#prepend_route! ⇒ Object 



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# File 'lib/heartbeat_rails/configuration.rb', line 65

def prepend_route!
  @mount_mode = :prepend
end

#route_method ⇒ Object 



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# File 'lib/heartbeat_rails/configuration.rb', line 57

def route_method
  @mount_mode
end

#status_check ⇒ Object 



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# File 'lib/heartbeat_rails/configuration.rb', line 83

def status_check
  responses = {}
  begin
    @monitors.each do |label, mon|
      time = ::Benchmark.realtime do
        responses["#{label}_response"] = (mon.call).to_s
      end
      responses["#{label}_time"] = "#{time.inspect} seconds"
    end
    return :ok, responses
  rescue => e
    responses['error_message'] = e.message
    return :error, responses
  end
end

#update!(data) ⇒ Object 



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# File 'lib/heartbeat_rails/configuration.rb', line 22

def update!(data)
  data.each do |key, value|
    self[key] = value
  end
end