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 



22
23
24
25
26
27
28
29
30
 
# 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 



68
69
70
71
72
73
74
 
# File 'lib/local_system.rb', line 68

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 



57
58
59
60
61
62
63
64
65
66
 
# File 'lib/local_system.rb', line 57

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' section in our man page for " \
      "further information which build targets are supported."

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

.validate_existence_of_package(package) ⇒ Object 



32
33
34
35
36
37
38
39
40
41
42
43
44
 
# 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 



46
47
48
49
50
51
52
53
54
55
 
# File 'lib/local_system.rb', line 46

def validate_machinery_compatibility
  if !os.can_run_machinery?
    supported_oses = Os.supported_host_systems.map { |o| o.canonical_name }.
      sort.join(", ")
    message = "Running Machinery is not supported on this system.\n" \
      "Supported operating systems are: #{supported_oses}"

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

Instance Method Details

#read_file(file) ⇒ Object

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



109
110
111
112
113
114
 
# File 'lib/local_system.rb', line 109

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

#requires_root? ⇒ Boolean

Returns:

  • (Boolean) 


77
78
79
 
# File 'lib/local_system.rb', line 77

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.



95
96
97
98
99
100
101
102
103
104
105
106
 
# File 'lib/local_system.rb', line 95

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 



81
82
83
84
85
86
87
88
89
90
 
# File 'lib/local_system.rb', line 81

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