module GCEMetadata

# File lib/gce_metadata.rb, line 29
def [](key)
        instance[key]
end

# File lib/gce_metadata.rb, line 25
def clear_instance
        @instance = nil
end

# File lib/gce_metadata.rb, line 46
def formalize_key(key)
        #key.to_s.gsub(/_/, '-')
        key
end

# File lib/gce_metadata.rb, line 37
def from_hash(hash, revision = DEFAULT_REVISION)
        # hash = {revision => hash}
        # instance.from_hash(hash)
        rev_obj = instance.new_child(revision)
        instance.instance_variable_set(:@children, {revision => rev_obj})
        instance.instance_variable_set(:@child_keys, [revision])
        rev_obj.from_hash(hash)
end

# File lib/gce_metadata.rb, line 21
def instance
        @instance ||= Root.new['computeMetadata']
end

# File lib/gce_metadata.rb, line 51
def logging(msg)
        @indent ||= 0
        disp = (" " * @indent) << msg
        # puts(disp)
        @indent += 2
        begin
                result = yield
        ensure
                @indent -= 2
        end
        # puts "#{disp} => #{result.inspect}"
        result
end

# File lib/gce_metadata.rb, line 33
def to_hash(revision = DEFAULT_REVISION)
        self[revision].to_hash
end