Class: Eye::Config

Inherits:
Object show all
Defined in:
lib/eye/config.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(settings = {}, applications = {}) ⇒ Config

Returns a new instance of Config.


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# File 'lib/eye/config.rb', line 5

def initialize(settings = {}, applications = {})
  @settings = settings
  @applications = applications
end

Instance Attribute Details

#applicationsObject (readonly)

Returns the value of attribute applications


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# File 'lib/eye/config.rb', line 3

def applications
  @applications
end

#settingsObject (readonly)

Returns the value of attribute settings


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# File 'lib/eye/config.rb', line 3

def settings
  @settings
end

Instance Method Details

#application_namesObject


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# File 'lib/eye/config.rb', line 105

def application_names
  applications.keys
end

#delete_app(name) ⇒ Object


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# File 'lib/eye/config.rb', line 109

def delete_app(name)
  applications.delete(name)
end

#delete_group(name) ⇒ Object


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# File 'lib/eye/config.rb', line 113

def delete_group(name)
  applications.each do |_, app_cfg|
    (app_cfg[:groups] || {}).delete(name)
  end
end

#delete_process(name) ⇒ Object


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# File 'lib/eye/config.rb', line 119

def delete_process(name)
  applications.each do |_, app_cfg|
    (app_cfg[:groups] || {}).each do |_, gr_cfg|
      (gr_cfg[:processes] || {}).delete(name)
    end
  end
end

#each_process(&block) ⇒ Object


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# File 'lib/eye/config.rb', line 97

def each_process(&block)
  applications.each do |_, app_cfg|
    (app_cfg[:groups] || {}).each do |_, gr_cfg|
      (gr_cfg[:processes] || {}).each_value(&block)
    end
  end
end

#merge(other_config) ⇒ Object


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# File 'lib/eye/config.rb', line 10

def merge(other_config)
  new_settings = {}
  Eye::Utils.deep_merge!(new_settings, @settings)
  Eye::Utils.deep_merge!(new_settings, other_config.settings)
  Eye::Config.new(new_settings, @applications.merge(other_config.applications))
end

#merge!(other_config) ⇒ Object


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# File 'lib/eye/config.rb', line 17

def merge!(other_config)
  Eye::Utils.deep_merge!(@settings, other_config.settings)
  @applications.merge!(other_config.applications)
end

#to_hObject


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# File 'lib/eye/config.rb', line 22

def to_h
  h = {}
  h[:settings] = @settings
  if Eye.respond_to?(:parsed_default_app)
    d = Eye.parsed_default_app
    h[:defaults] = d ? d.config : {}
  end
  h[:applications] = @applications
  h
end

#transform!Object


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# File 'lib/eye/config.rb', line 76

def transform!
  # transform syslog option
  each_process do |process|
    out = process[:stdout] && process[:stdout].start_with?(':syslog')
    err = process[:stderr] && process[:stderr].start_with?(':syslog')
    next unless err || out

    redir = err ? '2>&1' : ''
    process[:stdout] = nil if out
    process[:stderr] = nil if err

    escaped_start_command = process[:start_command].to_s.gsub(%{"}, %{\\"})

    names = [process[:application], process[:group] == '__default__' ? nil : process[:group], process[:name]].compact
    logger = "logger -t \"#{names.join(':')}\""

    process[:start_command] = %{sh -c "#{escaped_start_command} #{redir} | #{logger}"}
    process[:use_leaf_child] = true if process[:daemonize]
  end
end

#validate!(validate_apps = []) ⇒ Object

raise an error if config wrong


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# File 'lib/eye/config.rb', line 34

def validate!(validate_apps = [])
  # Check blank pid_files
  no_pid_file = []
  each_process { |c| no_pid_file << c if c[:pid_file].blank? }
  if no_pid_file.any?
    raise Eye::Dsl::Error, "blank pid_file for: #{no_pid_file.map { |c| c[:name] } * ', '}"
  end

  # Check duplicates of the full pid_file

  dupl_pids = Hash.new(0)
  each_process do |o|
    ex_pid_file = Eye::System.normalized_file(o[:pid_file], o[:working_dir])
    dupl_pids[ex_pid_file] += 1
  end
  dupl_pids = dupl_pids.select { |_, v| v > 1 }

  if dupl_pids.any?
    raise Eye::Dsl::Error, "duplicate pid_files: #{dupl_pids.inspect}"
  end

  # Check duplicates of the full_name
  dupl_names = Hash.new(0)
  each_process do |o|
    full_name = "#{o[:application]}:#{o[:group]}:#{o[:name]}"
    dupl_names[full_name] += 1
  end
  dupl_names = dupl_names.select { |_, v| v > 1 }

  if dupl_names.any?
    raise Eye::Dsl::Error, "duplicate names: #{dupl_names.inspect}"
  end

  # validate processes with their own validate
  each_process do |process_cfg|
    Eye::Process.validate process_cfg, validate_apps.include?(process_cfg[:application])
  end

  # just to be sure ENV was not removed
  ENV[''] rescue raise Eye::Dsl::Error, "ENV is not a hash '#{ENV.inspect}'"
end