Module: Icinga2::Hosts

Included in:
Client
Defined in:
lib/icinga2/hosts.rb

Instance Method Summary collapse

Instance Method Details

#addHost(params = {}) ⇒ Object 



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# File 'lib/icinga2/hosts.rb', line 6

def addHost( params = {} )

  name             = params.dig(:name)
  fqdn             = params.dig(:fqdn)
  displayName      = params.dig(:display_name) || name
  notifications    = params.dig(:enable_notifications) || false
  maxCheckAttempts = params.dig(:max_check_attempts) || 3
  checkInterval    = params.dig(:check_interval) || 60
  retryInterval    = params.dig(:retry_interval) || 45
  notes            = params.dig(:notes)
  notesUrl         = params.dig(:notes_url)
  actionUrl        = params.dig(:action_url)
  vars             = params.dig(:vars) || {}

  if( name == nil )

    return {
      :status  => 404,
      :message => 'missing host name'
    }
  end

  if( fqdn == nil )
    # build FQDN
    fqdn = Socket.gethostbyname( name ).first
  end

  payload = {
    "templates" => [ "generic-host" ],
    "attrs"     => {
      "address"              => fqdn,
      "display_name"         => displayName,
      "max_check_attempts"   => maxCheckAttempts.to_i,
      "check_interval"       => checkInterval.to_i,
      "retry_interval"       => retryInterval.to_i,
      "enable_notifications" => notifications,
      "action_url"           => actionUrl,
      "notes"                => notes,
      "notes_url"            => notesUrl
    }
  }

  if( ! vars.empty? )
    payload['attrs']['vars'] = vars
  end

  if( @icingaCluster == true && @icingaSatellite != nil )
    payload['attrs']['zone'] = @icingaSatellite
  end

  logger.debug( JSON.pretty_generate( payload ) )

  result = Network.put( {
    :host    => name,
    :url     => sprintf( '%s/v1/objects/hosts/%s', @icingaApiUrlBase, name ),
    :headers => @headers,
    :options => @options,
    :payload => payload
  } )

  return JSON.pretty_generate( result )

end

#deleteHost(params = {}) ⇒ Object 



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# File 'lib/icinga2/hosts.rb', line 71

def deleteHost( params = {} )

  name = params.dig(:name)

  if( name == nil )

    return {
      :status  => 404,
      :message => 'missing host name'
    }
  end

  result = Network.delete( {
    :host    => name,
    :url     => sprintf( '%s/v1/objects/hosts/%s?cascade=1', @icingaApiUrlBase, name ),
    :headers => @headers,
    :options => @options
  } )

  return JSON.pretty_generate( result )

end

#existsHost?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/icinga2/hosts.rb', line 126

def existsHost?( name )

  result = self.listHosts( { :name => name } )

  if( result.is_a?( String ) )
    result = JSON.parse( result )
  end

  status = result.dig('status')

  if( status != nil && status == 200 )
    return true
  end

  return false

end

#hostObjects(params = {}) ⇒ Object 



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# File 'lib/icinga2/hosts.rb', line 145

def hostObjects( params = {} )

  attrs   = params.dig(:attrs)
  filter  = params.dig(:filter)
  joins   = params.dig(:joins)
  payload = {}

  if( attrs == nil )
    attrs = ['name','state','acknowledgement','downtime_depth','last_check']
  end

  if( attrs != nil )
    payload['attrs'] = attrs
  end

  if( filter != nil )
    payload['filter'] = filter
  end

  if( joins != nil )
    payload['joins'] = joins
  end

  result = Network.get( {
    :host     => nil,
    :url      => sprintf( '%s/v1/objects/hosts', @icingaApiUrlBase ),
    :headers  => @headers,
    :options  => @options,
    :payload  => payload
  } )

  return JSON.pretty_generate( result )

end

#hostProblems ⇒ Object 



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# File 'lib/icinga2/hosts.rb', line 181

def hostProblems()

  data     = self.hostObjects()
  problems = 0

  if( data.is_a?(String) )
    data = JSON.parse(data)
  end

  nodes = data.dig('nodes')

  nodes.each do |n|

    attrs           = n.last.dig('attrs')

    state           = attrs.dig('state')           || 0
    downtimeDepth   = attrs.dig('downtime_depth')  || 0
    acknowledgement = attrs.dig('acknowledgement') || 0

    if( state != 0 && downtimeDepth == 0 && acknowledgement == 0 )
      problems += 1
    end

  end

  return problems

end

#hostSeverity(host) ⇒ Object

stolen from Icinga Web 2 ./modules/monitoring/library/Monitoring/Backend/Ido/Query/ServicestatusQuery.php



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# File 'lib/icinga2/hosts.rb', line 262

def hostSeverity( host )

  attrs = host["attrs"]

  severity = 0

  if (attrs["state"] == 0)
    if (getObjectHasBeenChecked(host))
      severity += 16
    end

    if (attrs["acknowledgement"] != 0)
      severity += 2
    elsif (attrs["downtime_depth"] > 0)
      severity += 1
    else
      severity += 4
    end
  else
    if (getObjectHasBeenChecked(host))
      severity += 16
    elsif (attrs["state"] == 1)
      severity += 32
    elsif (attrs["state"] == 2)
      severity += 64
    else
      severity += 256
    end

    if (attrs["acknowledgement"] != 0)
      severity += 2
    elsif (attrs["downtime_depth"] > 0)
      severity += 1
    else
      severity += 4
    end
  end

  return severity

end

#listHosts(params = {}) ⇒ Object 



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# File 'lib/icinga2/hosts.rb', line 95

def listHosts( params = {} )

  name   = params.dig(:name)
  attrs  = params.dig(:attrs)
  filter = params.dig(:filter)
  joins  = params.dig(:joins)

  if( attrs != nil )
    payload['attrs'] = attrs
  end

  if( filter != nil )
    payload['filter'] = filter
  end

  if( joins != nil )
    payload['joins'] = joins
  end

  result = Network.get( {
    :host => name,
    :url  => sprintf( '%s/v1/objects/hosts/%s', @icingaApiUrlBase, name ),
    :headers  => @headers,
    :options  => @options
  } )

  return JSON.pretty_generate( result )

end

#problemHosts(max_items = 5) ⇒ Object 



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# File 'lib/icinga2/hosts.rb', line 211

def problemHosts( max_items = 5 )

  count = 0
  @hostProblems = {}
  @hostProblemsSeverity = {}

  hostData = self.hostObjects()

  if( hostData.is_a?(String) )

    hostData = JSON.parse( hostData )
  end

#       logger.debug( hostData )

  hostData = hostData.dig('nodes')

  hostData.each do |host,v|

    name  = v.dig('name')
    state = v.dig('attrs','state')

    if( state == 0 )
      next
    end

    @hostProblems[name] = self.hostSeverity(v)
  end

  # get the count of problems
  #
  @hostProblems.keys[1..max_items].each { |k,v| @hostProblemsSeverity[k] = @hostProblems[k] }

#       @hostProblems.each do |k,v|
#
#         if( count >= max_items )
#           break
#         end
#
#         @hostProblemsSeverity[k] = v
#
#         count += 1
#       end

  return @hostProblemsSeverity

end