export function decorateProperties()

in modules/cache-material/src/caching_cryptographic_materials_decorators.ts [25:78]

• 46 lines of code
• 8 McCabe index (conditional complexity)

export function decorateProperties<S extends SupportedAlgorithmSuites>(
  obj: CachingMaterialsManager<S>,
  input: CachingMaterialsManagerDecorateInput<S>
) {
  const {
    cache,
    backingMaterialsManager,
    maxAge,
    maxBytesEncrypted,
    maxMessagesEncrypted,
    partition,
  } = input

  /* Precondition: A caching material manager needs a cache. */
  needs(cache, 'You must provide a cache.')
  /* Precondition: A caching material manager needs a way to get material. */
  needs(backingMaterialsManager, 'You must provide a backing material source.')
  /* Precondition: You *can not* cache something forever. */
  needs(maxAge > 0, 'You must configure a maxAge')
  /* Precondition: maxBytesEncrypted must be inside bounds.  i.e. positive and not more than the maximum. */
  needs(
    !maxBytesEncrypted ||
      (maxBytesEncrypted > 0 &&
        Maximum.BYTES_PER_CACHED_KEY_LIMIT >= maxBytesEncrypted),
    'maxBytesEncrypted is outside of bounds.'
  )
  /* Precondition: maxMessagesEncrypted must be inside bounds.  i.e. positive and not more than the maximum. */
  needs(
    !maxMessagesEncrypted ||
      (maxMessagesEncrypted > 0 &&
        Maximum.MESSAGES_PER_CACHED_KEY_LIMIT >= maxMessagesEncrypted),
    'maxMessagesEncrypted is outside of bounds.'
  )
  /* Precondition: partition must be a string. */
  needs(
    partition && typeof partition === 'string',
    'partition must be a string.'
  )

  readOnlyProperty(obj, '_cache', cache)
  readOnlyProperty(obj, '_backingMaterialsManager', backingMaterialsManager)
  readOnlyProperty(obj, '_maxAge', maxAge)
  readOnlyProperty(
    obj,
    '_maxBytesEncrypted',
    maxBytesEncrypted || Maximum.BYTES_PER_CACHED_KEY_LIMIT
  )
  readOnlyProperty(
    obj,
    '_maxMessagesEncrypted',
    maxMessagesEncrypted || Maximum.MESSAGES_PER_CACHED_KEY_LIMIT
  )
  readOnlyProperty(obj, '_partition', partition)
}