Method setCheckKey

internal/engines/cache/check.go:142–164

setCheckKey is a function to set a check key in the cache of the CheckEngineWithKeys. It takes a permission check request as a key, a permission check response as a value, and returns a boolean value indicating if the operation was successful.

(key *base.PermissionCheckRequest, value *base.PermissionCheckResponse, isRelational bool)

// It takes a permission check request as a key, a permission check response as a value,
// and returns a boolean value indicating if the operation was successful.
func (c *CheckEngineWithCache) setCheckKey(key *base.PermissionCheckRequest, value *base.PermissionCheckResponse, isRelational bool) bool {
	// If either the key or the value is nil, return false.
	if key == nil || value == nil {
		return false
	}

	// Create a new xxhash object for hashing.
	h := xxhash.New()

	// Generate a key string from the permission check request and write it to the hash.
	// If there's an error while writing to the hash, return false.
	size, err := h.Write([]byte(engines.GenerateKey(key, isRelational)))
	if err != nil {
		return false
	}

	// Compute the hash sum and encode it as a hexadecimal string.
	k := hex.EncodeToString(h.Sum(nil))

	// Set the hashed key and the check result in the cache, using the size of the hashed key as an expiry.
	// The Set method should return true if the operation was successful, so return the result.
	return c.cache.Set(k, value.GetCan(), int64(size))
}