Module: HybridPlatformsConductor::SafeMerge

Included in:
Deployer, HpcPlugins::SecretsReader::Keepass
Defined in:
lib/hybrid_platforms_conductor/safe_merge.rb

Overview

Provide an easy way to safe-merge hashes

Instance Method Summary collapse

Instance Method Details

#safe_merge(hash, hash_to_merge) ⇒ Object

Safe-merge 2 hashes. Safe-merging is done by:

  • Merging values that are hashes.

  • Reporting errors when values conflict.

When values are conflicting, the initial hash won’t modify those conflicting values and will stop the merge.

Parameters

  • hash (Hash): Hash to be modified merging hash_to_merge

  • hash_to_merge (Hash): Hash to be merged into hash

Result

  • nil or Array<Object>: nil in case of success, or the keys path leading to a conflicting value in case of error



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# File 'lib/hybrid_platforms_conductor/safe_merge.rb', line 17

def safe_merge(hash, hash_to_merge)
  conflicting_path = nil
  hash_to_merge.each do |key, value_to_merge|
    if hash.key?(key)
      if hash[key].is_a?(Hash) && value_to_merge.is_a?(Hash)
        sub_conflicting_path = safe_merge(hash[key], value_to_merge)
        conflicting_path = [key] + sub_conflicting_path unless sub_conflicting_path.nil?
      elsif hash[key] != value_to_merge
        conflicting_path = [key]
      end
    else
      hash[key] = value_to_merge
    end
    break unless conflicting_path.nil?
  end
  conflicting_path
end