Module: Icinga2::Network

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

Overview

namespace for network handling

Class Method Summary collapse

Class Method Details

.delete(params = {}) ⇒ Hash

static function for DELETE Requests

Parameters:

  • params (Hash) (defaults to: {})

Options Hash (params):

  • :url (String)
  • :headers (String)
  • :options (String)

Returns:

  • (Hash) 


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# File 'lib/icinga2/network.rb', line 416

def self.delete( params = {} )

  url     = params.dig(:url)
  headers = params.dig(:headers)
  options = params.dig(:options)
  max_retries   = 3
  times_retried = 0

  headers['X-HTTP-Method-Override'] = 'DELETE'

  result  = {}

  rest_client = RestClient::Resource.new(
    URI.encode( url ),
    options
  )

  begin
    data     = rest_client.get( headers )

    if( data )

      data    = JSON.parse( data ) #.body )
      results = data.dig('results').first

      unless( results.nil? )

        result = {
          status: results.dig('code').to_i,
          name: results.dig('name'),
          message: results.dig('status')
        }

      end
    end

  rescue RestClient::ExceptionWithResponse => e

    error  = e.response ? e.response : nil

    error = JSON.parse( error ) if  error.is_a?( String )

    results = error.dig('results')

    result = if( !results.nil? )

      {
        status: results.dig('code').to_i,
        name: results.dig('name'),
        message: results.dig('status')
      }

    else

      {
        status: error.dig( 'error' ).to_i,
#            :name        => results.dig('name'),
        message: error.dig( 'status' )
      }

             end
  rescue Errno::ECONNREFUSED => e

    if( times_retried < max_retries )

      times_retried += 1
      $stderr.puts( format( 'Cannot execute request to %s, cause: %s', url, e ) )
      $stderr.puts( format( '   retry %d%d', times_retried, max_retries ) )

      sleep( 2 )
      retry
    else
      $stderr.puts( 'Exiting request ...' )

      return {
        status: 500,
        message: format( 'Errno::ECONNREFUSED for request: %s', url )
      }
    end
  end

  result
end

.get(params = {}) ⇒ Hash

static function for GET Requests

Parameters:

  • params (Hash) (defaults to: {})

Options Hash (params):

  • :host (String)
  • :url (String)
  • :headers (String)
  • :options (String)
  • :payload (Hash)

Returns:

  • (Hash) 


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# File 'lib/icinga2/network.rb', line 20

def self.get( params = {} )

  host    = params.dig(:host)
  url     = params.dig(:url)
  headers = params.dig(:headers)
  options = params.dig(:options)
  payload = params.dig(:payload) || {}
  result  = {}
  max_retries   = 3
  times_retried = 0

  return get_with_payload( params ) if  payload.count >= 1

  headers.delete( 'X-HTTP-Method-Override' )

  result  = {}

  rest_client = RestClient::Resource.new(
    URI.encode( url ),
    options
  )

  begin

    data     = rest_client.get( headers )
    results  = JSON.parse( data.body )
    results  = results.dig('results')

    result[:status] = 200
    result[:data] ||={}

    results.each do |r|

#          puts JSON.pretty_generate r
#          name = r.dig('name')
      attrs = r.dig('attrs')

      if( !attrs.nil? )

        result[:data][attrs['name']] = {
          name: attrs['name'],
          display_name: attrs['display_name'],
          type: attrs['type']
        }
      else
        result = r
      end

    end

  rescue RestClient::ExceptionWithResponse => e

    error  = e.response ? e.response : nil

    error  = JSON.parse( error )

    result = {
      status: error['error'].to_i,
      name: host,
      message: error['status']
    }
  rescue Errno::ECONNREFUSED => e

    if( times_retried < max_retries )

      times_retried += 1
      $stderr.puts( format( 'Cannot execute request to %s, cause: %s', url, e ) )
      $stderr.puts( format( '   retry %d%d', times_retried, max_retries ) )

      sleep( 2 )
      retry
    else
      $stderr.puts( 'Exiting request ...' )

      return {
        status: 500,
        message: format( 'Errno::ECONNREFUSED for request: %s', url )
      }
    end
  end

  result

end

.get_with_payload(params = {}) ⇒ Hash

static function for GET Requests with payload internal we use here an POST Request and overwrite a http header

Parameters:

  • params (Hash) (defaults to: {})

Options Hash (params):

  • :host (String)
  • :url (String)
  • :headers (String)
  • :options (String)
  • :payload (Hash)

Returns:

  • (Hash) 


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# File 'lib/icinga2/network.rb', line 118

def self.get_with_payload( params = {} )

  host    = params.dig(:host)
  url     = params.dig(:url)
  headers = params.dig(:headers)
  options = params.dig(:options)
  payload = params.dig(:payload) || {}
  result  = {}
  max_retries   = 3
  times_retried = 0

  headers['X-HTTP-Method-Override'] = 'GET'

  rest_client = RestClient::Resource.new(
    URI.encode( url ),
    options
  )

  begin

    response = rest_client.post(
      JSON.generate( payload ),
      headers
    )

    response_code = response.code
    response_body = response.body
    node         = {}

    data    = JSON.parse( response_body )
    results = data.dig('results')

    unless( results.nil? )

      results.each do |r|

        node[r.dig('name')] = r
      end

      result = {
        status: response_code,
        nodes: node
      }
    end

  rescue RestClient::ExceptionWithResponse => e

    error  = e.response ? e.response : nil
    error  = JSON.parse( error )

    result = {
      status: error['error'].to_i,
      name: host,
      message: error['status']
    }
  rescue Errno::ECONNREFUSED => e

    if( times_retried < max_retries )

      times_retried += 1
      $stderr.puts( format( 'Cannot execute request to %s, cause: %s', url, e ) )
      $stderr.puts( format( '   retry %d%d', times_retried, max_retries ) )

      sleep( 2 )
      retry
    else
      $stderr.puts( 'Exiting request ...' )

      return {
        status: 500,
        message: format( 'Errno::ECONNREFUSED for request: %s', url )
      }
    end
  end

  result

end

.post(params = {}) ⇒ Hash

static function for POST Requests

Parameters:

  • params (Hash) (defaults to: {})

Options Hash (params):

  • :url (String)
  • :headers (String)
  • :options (String)
  • :payload (Hash)

Returns:

  • (Hash) 


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# File 'lib/icinga2/network.rb', line 208

def self.post( params = {} )

  url     = params.dig(:url)
  headers = params.dig(:headers)
  options = params.dig(:options)
  payload = params.dig(:payload)
  max_retries   = 3
  times_retried = 0

  headers['X-HTTP-Method-Override'] = 'POST'

  result  = {}

  rest_client = RestClient::Resource.new(
    URI.encode( url ),
    options
  )

  begin

    data = rest_client.post(
      JSON.generate( payload ),
      headers
    )

    data    = JSON.parse( data )
    results = data.dig('results').first

    unless( results.nil? )

      result = {
        status: results.dig('code').to_i,
        name: results.dig('name'),
        message: results.dig('status')
      }

    end

  rescue RestClient::ExceptionWithResponse => e

    error  = e.response ? e.response : nil
    error = JSON.parse( error ) if  error.is_a?( String )

    results = error.dig( 'results' )

    if( !results.nil? )

      result = result.first

      result = {
        status: results.dig('code').to_i,
        name: results.dig('name'),
        message: results.dig('status'),
        error: results.dig('errors')
      }
    else
      result = {
        status: error.dig( 'error' ).to_i,
        message: error.dig( 'status' )
      }
    end

  rescue Errno::ECONNREFUSED => e

    if( times_retried < max_retries )

      times_retried += 1
      $stderr.puts( format( 'Cannot execute request to %s, cause: %s', url, e ) )
      $stderr.puts( format( '   retry %d%d', times_retried, max_retries ) )

      sleep( 2 )
      retry
    else
      $stderr.puts( 'Exiting request ...' )

      return {
        status: 500,
        message: format( 'Errno::ECONNREFUSED for request: %s', url )
      }
    end
  end

  result
end

.put(params = {}) ⇒ Hash

static function for PUT Requests

Parameters:

  • params (Hash) (defaults to: {})

Options Hash (params):

  • :host (String)
  • :url (String)
  • :headers (String)
  • :options (String)
  • :payload (Hash)

Returns:

  • (Hash) 


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# File 'lib/icinga2/network.rb', line 305

def self.put( params = {} )

  host    = params.dig(:host)
  url     = params.dig(:url)
  headers = params.dig(:headers)
  options = params.dig(:options)
  payload = params.dig(:payload)
  max_retries   = 3
  times_retried = 0

  headers['X-HTTP-Method-Override'] = 'PUT'

  result  = {}

  rest_client = RestClient::Resource.new(
    URI.encode( url ),
    options
  )

  begin

    data = rest_client.put(
      JSON.generate( payload ),
      headers
    )

    data    = JSON.parse( data )
    results = data.dig('results').first

    unless( results.nil? )

      result = {
        status: results.dig('code').to_i,
        name: results.dig('name'),
        message: results.dig('status')
      }

    end

  rescue RestClient::ExceptionWithResponse => e

    error  = e.response ? e.response : nil

    error = JSON.parse( error ) if  error.is_a?( String )

    results = error.dig( 'results' )

    if( !results.nil? )

      if( result.is_a?( Hash ) && result.count != 0 )

        result = result.first

        result = {
          status: results.dig('code').to_i,
          name: results.dig('name'),
          message: results.dig('status'),
          error: results.dig('errors')
        }

      else

        result = {
          status: 204,
          name: host,
          message: 'unknown result'
        }
      end

    else

      result = {
        status: error.dig( 'error' ).to_i,
        message: error.dig( 'status' )
      }

    end

  rescue Errno::ECONNREFUSED => e

    if( times_retried < max_retries )

      times_retried += 1
      $stderr.puts( format( 'Cannot execute request to %s, cause: %s', url, e ) )
      $stderr.puts( format( '   retry %d%d', times_retried, max_retries ) )

      sleep( 2 )
      retry
    else
      $stderr.puts( 'Exiting request ...' )

      return {
        status: 500,
        message: format( 'Errno::ECONNREFUSED for request: %s', url )
      }
    end
  end

  result
end