Class: LocalSystem

Inherits:
System show all
Defined in:
lib/local_system.rb

Overview

Copyright © 2013-2015 SUSE LLC

This program is free software; you can redistribute it and/or modify it under the terms of version 3 of the GNU General Public License as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, contact SUSE LLC.

To contact SUSE about this file by physical or electronic mail, you may find current contact information at www.suse.com

Constant Summary collapse

@@os = 
nil

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from System

#check_requirement, #create_archive, for, #has_command?, #run_script

Class Method Details

.os ⇒ Object 



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# File 'lib/local_system.rb', line 22

def os
  if !@@os
    description = SystemDescription.new("localhost", SystemDescriptionMemoryStore.new)
    inspector = OsInspector.new(System.for("localhost"), description)
    inspector.inspect(nil)
    @@os = description.os
  end
  @@os
end

.validate_architecture(arch) ⇒ Object 



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# File 'lib/local_system.rb', line 72

def validate_architecture(arch)
  if os.architecture != arch
    raise(Machinery::Errors::UnsupportedArchitecture.new(
      "This operation is not supported on architecture '#{os.architecture}'."
    ))
  end
end

.validate_build_compatibility(system_description) ⇒ Object 



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# File 'lib/local_system.rb', line 61

def validate_build_compatibility(system_description)
  if !os.can_build?(system_description.os)
    message = "Building '#{system_description.os.display_name}' is " \
      "not supported on this distribution.\n" \
      "Check the 'BUILD SUPPORT MATRIX' by running `#{$0} build --help` for " \
      "further information which build targets are supported."

    raise(Machinery::Errors::BuildFailed.new(message))
  end
end

.validate_existence_of_package(package) ⇒ Object 



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# File 'lib/local_system.rb', line 32

def validate_existence_of_package(package)
  begin
    Cheetah.run("rpm", "-q", package)
  rescue
    needed_module = os.module_required_by_package(package)
    if needed_module
      raise(Machinery::Errors::MissingRequirement.new("You need the package '#{package}' from module '#{needed_module}'. You can install it as follows:\n" \
        "If you haven't selected the module '#{needed_module}' before, run `yast2 scc` and choose 'Select Extensions' and activate '#{needed_module}'.\nRun `zypper install #{package}` to install the package."))
    else
      raise(Machinery::Errors::MissingRequirement.new("You need the package '#{package}'. You can install it by running `zypper install #{package}`"))
    end
  end
end

.validate_machinery_compatibility ⇒ Object 



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# File 'lib/local_system.rb', line 46

def validate_machinery_compatibility
  return if !Machinery::Config.new.perform_support_check || os.can_run_machinery?

  supported_oses = Os.supported_host_systems.map { |o| o.canonical_name }.sort.join(", ")
  message = <<EOF
You are running Machinery on a platform we do not explicitly support and test.
It still could work very well. If you run into issues or would like to provide us feedback, you are welcome to file an issue at https://github.com/SUSE/machinery/issues/new or write an email to [email protected].
Oficially supported operating systems are: '#{supported_oses}'

To disable this message in the machinery configuration use 'machinery config perform-support-check=false'
EOF

  Machinery::Ui.warn message
end

Instance Method Details

#read_file(file) ⇒ Object

Reads a file from the System. Returns nil if it does not exist.



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# File 'lib/local_system.rb', line 121

def read_file(file)
  File.read(file)
rescue Errno::ENOENT
  # File not found, return nil
  return
end

#requires_root? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/local_system.rb', line 81

def requires_root?
  true
end

#retrieve_files(filelist, destination) ⇒ Object

Retrieves files specified in filelist from the local system and raises an Machinery::Errors::RsyncFailed exception when it’s not successful. Destination is the directory where to put the files.



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# File 'lib/local_system.rb', line 99

def retrieve_files(filelist, destination)
  begin
    LoggedCheetah.run(
      "rsync",
      "--chmod=go-rwx",
      "--files-from=-",
      "/",
      destination,
      stdout: :capture,
      stdin: filelist.join("\n")
      )
  rescue Cheetah::ExecutionFailed => e
    raise Machinery::Errors::RsyncFailed.new(
    "Could not rsync files from localhost. \n" \
    "Error: #{e}\n" \
    "If you lack read permissions on some files you may want to retry as user root or specify\n" \
    "the fully qualified host name instead of localhost in order to connect as root via ssh."
  )
  end
end

#run_command(*args) ⇒ Object 



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# File 'lib/local_system.rb', line 85

def run_command(*args)
  if args.last.is_a?(Hash) && args.last[:disable_logging]
    cheetah_class = Cheetah
  else
    cheetah_class = LoggedCheetah
  end
  with_c_locale do
    cheetah_class.run(*args)
  end
end