function getScalingMethod()

in src/scaler/scaler-core/index.js [125:154]

• 27 lines of code
• 2 McCabe index (conditional complexity)

function getScalingMethod(cluster) {
  const SCALING_METHODS_FOLDER = './scaling-methods/';
  const DEFAULT_METHOD_NAME = 'STEPWISE';

  // sanitize the method name before using
  // to prevent risk of directory traversal.
  const methodName = sanitize(cluster.scalingMethod);
  let scalingMethod;
  try {
    scalingMethod = require(SCALING_METHODS_FOLDER + methodName.toLowerCase());
  } catch (err) {
    logger.warn({
      message: `Unknown scaling method '${methodName}'`,
      projectId: cluster.projectId,
      regionId: cluster.regionId,
      clusterId: cluster.clusterId,
    });
    scalingMethod = require(
      SCALING_METHODS_FOLDER + DEFAULT_METHOD_NAME.toLowerCase(),
    );
    cluster.scalingMethod = DEFAULT_METHOD_NAME;
  }
  logger.info({
    message: `Using scaling method: ${cluster.scalingMethod}`,
    projectId: cluster.projectId,
    regionId: cluster.regionId,
    clusterId: cluster.clusterId,
  });
  return scalingMethod;
}