Class: CloneRemoteDb::Loader

Inherits:
Object
  • Object
show all
Defined in:
lib/clone_remote_db/loader.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(script) ⇒ Loader

Returns a new instance of Loader.



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# File 'lib/clone_remote_db/loader.rb', line 6

def initialize(script)
  @script = script
end

Instance Attribute Details

#script ⇒ Object (readonly)

Returns the value of attribute script.



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# File 'lib/clone_remote_db/loader.rb', line 4

def script
  @script
end

Instance Method Details



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# File 'lib/clone_remote_db/loader.rb', line 34

def banner(opts)
  opts.banner = "Download and import a remote (PostgreSQL) database into a local database.\n\nUsage:\n      \#{script} [options]\n\nOptions:\n"
end

#defaults ⇒ Object 



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# File 'lib/clone_remote_db/loader.rb', line 66

def defaults
  {
    local_dest: '~/pg_dumps/{remote_db}/%Y-%m/%Y-%m-%d_%H.%M.sql.gz',
    gzip_opts: %w(-9 --stdout),
    pg_dump_opts: %w(-c -O),
    pg_exclude_data: %w(versions),
    remote_user: 'postgres'
  }
end

#die(key_or_msg, msg = nil, exit_code = -1)) ⇒ Object 



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# File 'lib/clone_remote_db/loader.rb', line 24

def die(key_or_msg, msg = nil, exit_code = -1)
  if key_or_msg.is_a?(String)
    $stderr.puts "Error: #{key_or_msg}"
  else
    arg = '--' + key_or_msg.to_s.gsub('_', '-')
    $stderr.puts "Error: argument #{arg} #{msg}."
  end
  exit(exit_code)
end

#opt(opts, key, msg, arg_opts = {}) ⇒ Object 



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# File 'lib/clone_remote_db/loader.rb', line 52

def opt(opts, key, msg, arg_opts = {})
  arg = "--#{key.to_s.gsub('_', '-')}"
  arg << " #{arg_opts[:arg]}" if arg_opts[:arg]
  on_args = [arg, msg]
  on_args.unshift(arg_opts[:short]) if arg_opts[:short]
  opts.on(*on_args, msg) do |v|
    options[key] = v
  end
end

#options ⇒ Object 



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# File 'lib/clone_remote_db/loader.rb', line 62

def options
  @options ||= {}.merge(defaults)
end

#parse_opts! ⇒ Object 



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# File 'lib/clone_remote_db/loader.rb', line 10

def parse_opts!
  OptionParser.new do |opts|
    banner(opts)
    version(opts)
    opt(opts, :local_db, "Local postgresql database name", arg: 'DBNAME', short: '-l')
    opt(opts, :remote_db, "Remote postgresql database name", arg: 'DBNAME', short: '-r')
    opt(opts, :host, "Host of the postgresql database", arg: 'HOST', short: '-h')
    opt(opts, :import_only, "Skip download and provide path to dump.sql.gz file", arg: 'PATH')
    opt(opts, :local_dest, "The path to save the dump.sql.gz file to", arg: 'PATH')
    opt(opts, :dry_run, "Don't actually do anything", short: '-n')
  end.parse!
  options
end

#replace_variables(str) ⇒ Object 



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# File 'lib/clone_remote_db/loader.rb', line 76

def replace_variables(str)
  new_str = str
  %w(local_db remote_db remote_user).each do |arg|
    new_str = new_str.gsub('{' + arg + '}', options[arg.to_sym])
  end
  new_str
end

#version(opts) ⇒ Object 



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# File 'lib/clone_remote_db/loader.rb', line 45

def version(opts)
  opts.on('--version', 'Show the version') do
    io.puts "clone_remote_db #{CloneRemoteDb::VERSION} (c) Josh McDade"
    exit(0)
  end
end