Class: CMDB::Rewriter

Inherits:
Object
  • Object
show all
Defined in:
lib/cmdb/rewriter.rb

Overview

Tool that visits every file in a hierarchy and rewrites its references to CMDB inputs.

References look like <<name.of.key>> and may be replaced with a scalar value or an array depending on the type of the input value.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config_dir) ⇒ Rewriter

Create a new shim to rewrite config files in a chosen dir and all subdirs. config_dir is transformed into an absolute path (if it isn’t already) before any rewrite operations occur.

Parameters:

  • config_dir (String, Pathname) 


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# File 'lib/cmdb/rewriter.rb', line 18

def initialize(config_dir)
  @dir = File.expand_path(config_dir)
  @rewriters = []
end

Instance Attribute Details

#missing_keys ⇒ Object (readonly)

Returns the value of attribute missing_keys.



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# File 'lib/cmdb/rewriter.rb', line 11

def missing_keys
  @missing_keys
end

Instance Method Details

#rewrite(cmdb) ⇒ Integer

Substitute CMDB input values into config files whenever a replacement token is encountered.

Parameters:

Returns:

  • (Integer) —

    the number of variables replaced

Raises:

  • (Errno::ENOENT) 


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# File 'lib/cmdb/rewriter.rb', line 27

def rewrite(cmdb)
  raise Errno::ENOENT.new(@dir) unless File.directory?(@dir)

  visit(@dir)
  total = 0
  @rewriters.each { |rw| total += rw.rewrite(cmdb) }

  @missing_keys = @rewriters.map(&:missing_keys).flatten.uniq.sort

  total
end

#save ⇒ Object 



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# File 'lib/cmdb/rewriter.rb', line 39

def save
  @rewriters.each(&:save)
  true
end