Module: ForemanMaintain::Concerns::OsFacts

Included in:
ForemanMaintain, SystemHelpers, RepositoryManager::El
Defined in:
lib/foreman_maintain/concerns/os_facts.rb

Constant Summary collapse

OS_RELEASE_FILE = 
'/etc/os-release'.freeze
FALLBACK_OS_RELEASE_FILE = 
'/usr/lib/os-release'.freeze

Instance Method Summary collapse

Instance Method Details

#centos? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 97

def centos?
  os_id == 'centos'
end

#cpu_cores ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 110

def cpu_cores
  execute('nproc')
end

#deb_major_version ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 73

def deb_major_version
  os_version_id.to_i if debian?
end

#debian? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 61

def debian?
  os_id == 'debian'
end

#debian_or_ubuntu? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 81

def debian_or_ubuntu?
  debian? || ubuntu?
end

#el8? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 57

def el8?
  el_major_version == 8
end

#el? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 53

def el?
  File.exist?('/etc/redhat-release')
end

#el_major_version ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 69

def el_major_version
  os_version_id.to_i if el?
end

#el_short_name ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 101

def el_short_name
  "el#{el_major_version}"
end

#facts ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 19

def facts
  unless defined?(@facts)
    @facts = {}
    regex = /^(["'])(.*)(\1)$/
    File.open(os_release_file) do |file|
      file.readlines.each do |line|
        line.strip! # drop any whitespace, including newlines from start and end of the line
        next if line.start_with?('#') # ignore comments
        # split at most into 2 items, if the value ever contains an =
        key, value = line.split('=', 2)
        next unless key && value
        @facts[key] = value.gsub(regex, '\2').delete('\\')
      end
    end
  end
  @facts
end

#memory ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 105

def memory
  meminfo = File.read('/proc/meminfo')
  meminfo.match(/^MemTotal:\s+(?<memory>\d+) kB/)['memory']
end

#os_id ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 41

def os_id
  facts.fetch('ID')
end

#os_id_like_list ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 45

def os_id_like_list
  facts.fetch('ID_LIKE', '').split
end

#os_name ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 49

def os_name
  facts.fetch('NAME')
end

#os_release_file ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 7

def os_release_file
  if File.file?(OS_RELEASE_FILE)
    return OS_RELEASE_FILE
  elsif File.file?(FALLBACK_OS_RELEASE_FILE)
    return FALLBACK_OS_RELEASE_FILE
  else
    puts "The #{OS_RELEASE_FILE} and #{FALLBACK_OS_RELEASE_FILE} files are missing! "\
         "Can't continue the execution without Operating System's facts!"
    exit 1
  end
end

#os_version ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 85

def os_version
  facts.fetch('VERSION')
end

#os_version_codename ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 89

def os_version_codename
  facts.fetch('VERSION_CODENAME')
end

#os_version_id ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 37

def os_version_id
  facts.fetch('VERSION_ID')
end

#rhel? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 93

def rhel?
  os_id == 'rhel'
end

#ubuntu? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 65

def ubuntu?
  os_id == 'ubuntu'
end

#ubuntu_major_version ⇒ Object 



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# File 'lib/foreman_maintain/concerns/os_facts.rb', line 77

def ubuntu_major_version
  os_version_id if ubuntu?
end