var lookup = {},
	lookup_histogram = {},
	result = [];

JSON.parse(value).forEach(function (item) {
	if (item.name === 'kubelet_runtime_operations_total'){
		var op_type = item.labels.operation_type;

		if (lookup[op_type]) {
			return;
		}
		lookup[op_type] = 1;
		result.push({
			'{#TYPE}': 'totals',
			'{#OP_TYPE}': op_type
		});
	}

	else if (item.name === 'kubelet_runtime_operations_duration_seconds_bucket'){
		var labels = item.labels.operation_type + item.labels.le;

		if (lookup_histogram[labels]) {
			return;
		}
		lookup_histogram[labels] = 1;
		result.push({
			'{#TYPE}': 'buckets',
			'{#OP_TYPE}': item.labels.operation_type,
			'{#LE}': item.labels.le
		});
	}
});

return JSON.stringify(result);