Class: Kstats::Node::Probe

Inherits:
Object
  • Object
show all
Defined in:
lib/kstats/node/probe.rb

Defined Under Namespace

Classes: DSL, Variable

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(id) ⇒ Probe

Returns a new instance of Probe.



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# File 'lib/kstats/node/probe.rb', line 117

def initialize id
  @variables = []
  @id = id
end

Class Attribute Details

.registered ⇒ Object

Returns the value of attribute registered.



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# File 'lib/kstats/node/probe.rb', line 6

def registered
  @registered
end

Instance Attribute Details

#category ⇒ Object

Returns the value of attribute category.



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# File 'lib/kstats/node/probe.rb', line 115

def category
  @category
end

#command ⇒ Object

Returns the value of attribute command.



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# File 'lib/kstats/node/probe.rb', line 115

def command
  @command
end

#command_block ⇒ Object

Returns the value of attribute command_block.



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# File 'lib/kstats/node/probe.rb', line 115

def command_block
  @command_block
end

#id ⇒ Object (readonly)

Returns the value of attribute id.



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# File 'lib/kstats/node/probe.rb', line 114

def id
  @id
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/kstats/node/probe.rb', line 115

def name
  @name
end

#type ⇒ Object

Returns the value of attribute type.



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# File 'lib/kstats/node/probe.rb', line 115

def type
  @type
end

#variables ⇒ Object

Returns the value of attribute variables.



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# File 'lib/kstats/node/probe.rb', line 115

def variables
  @variables
end

Class Method Details

.get_format(probe) ⇒ Object 



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# File 'lib/kstats/node/probe.rb', line 12

def get_format probe
  probe = @fixed_registered.select{|x| x.id == probe }.first
  if probe.nil?
    return nil
  else
    {
      type: probe.type,
      variables: probe.variables.inject({}){ |h, x|
        h[x.name] = {}
        h[x.name][:desc] = x.desc
        h[x.name][:color] = x.color
        h
      }
    }
  end
end

.list ⇒ Object 



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# File 'lib/kstats/node/probe.rb', line 60

def list
  probe_categories = {}
  @fixed_registered.each do |probe|
    probe_categories[probe.category] ||= []
    probe_categories[probe.category] << { name: probe.name, id: probe.id }
  end

  probe_categories
end

.register(name, &block) ⇒ Object 



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# File 'lib/kstats/node/probe.rb', line 8

def register name, &block
  @registered << Probe.new(name).from_dsl(&block)
end

.reload_and_test! ⇒ Object 



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# File 'lib/kstats/node/probe.rb', line 29

def reload_and_test!
  @fixed_registered = @registered
  @registered = []

  dir = Kstats::Node::Config['probes_dir']

  Dir[File.join(dir, "*.rb")].each do |probe_file|
    begin
      load(probe_file)
    rescue => e
      puts "Unable to load #{probe_file}: #{e}"
      puts "*\t#{e.backtrace.join("\n*\t")}"
    end
  end

  probes = {}

    @registered.each do |probe|
      begin
        probes[probe.id] = probe.test
      rescue => e
        puts "Exception for probe #{probe.id} : #{e.message}"
        puts "*\t#{e.backtrace.join("\n*\t")}"
      end
    end

  @fixed_registered  = @registered

  probes
end

Instance Method Details

#add_variable(var) ⇒ Object 



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# File 'lib/kstats/node/probe.rb', line 128

def add_variable var
  @variables << var
end

#from_dsl(&block) ⇒ Object 



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# File 'lib/kstats/node/probe.rb', line 122

def from_dsl &block
  DSL.new(self).instance_eval(&block)

  return self
end

#test ⇒ Object 



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# File 'lib/kstats/node/probe.rb', line 132

def test
  @command = self.command_block.call unless self.command_block.nil?

  @variables.inject({}){|h, x| h[x.name] = x.test; h }
end