Class: GeneSystem::Platform

Inherits:
Object
  • Object
show all
Defined in:
lib/gene_system/platform.rb

Overview

Platform is a class to handle command execution on host system

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Platform

Platform constructor. Raises unsupported platform RuntimeError when the host system is not a posix system.



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# File 'lib/gene_system/platform.rb', line 12

def initialize
  raise 'unsupported platform' unless posix?
end

Instance Method Details

#execute_command(cmd, vars = {}) ⇒ Integer

Executes a command on a host system and returns command exit code

Parameters:

  • cmd (String)

Returns:

  • (Integer) 


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# File 'lib/gene_system/platform.rb', line 37

def execute_command(cmd, vars = {})
  hbs = Handlebars::Handlebars.new

  pid = Process.spawn(hbs.compile(cmd).call(vars))
  _, status = Process.waitpid2(pid)

  status.exitstatus
end

#execute_commands(cmds = [], vars = {}) ⇒ Object

Takes an array of commands for the host and executes each one

If command returns non zero status code, then a command failed RuntimeError will be raised

@param cmds



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# File 'lib/gene_system/platform.rb', line 24

def execute_commands(cmds = [], vars = {})
  cmds.each do |cmd|
    status = execute_command(cmd, vars)
    raise "command `#{cmd}` failed - returned #{status}" unless status.zero?
  end
end

#posix? ⇒ Boolean

Posix platform check. Returns true if host is a posix system i.e. Mac/Linux etc.

Returns:

  • (Boolean) 


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# File 'lib/gene_system/platform.rb', line 52

def posix?
  OS.posix?
end