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Diffstat (limited to 'requirements/catalogue/req-035.md')
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diff --git a/requirements/catalogue/req-035.md b/requirements/catalogue/req-035.md new file mode 100644 index 0000000..0dc9aaf --- /dev/null +++ b/requirements/catalogue/req-035.md @@ -0,0 +1,27 @@ +# req-035 + +Schist must implement the procedure described below as +`is_bucket_balance_up_to_date`. + +## is_bucket_balance_up_to_date + +Inputs: + +- A bucket, `bucket` + +1. Let `cache_key = bucket.balance_cache_key`. +2. If `cache_key` is not in the format, `<string>:<string>`, then return FALSE. +3. Let `drip_id` be the part of `cache_key` before the `:`. +4. If there is no drip with the ID, `drip_id`, then return FALSE. +5. Let `drip` be the drip with the ID, `drip_id`. +6. If there is a drip, `drip_2`, such that `drip_2.date > drip.date` and + `drip.bucket_id = bucket.id`, then return FALSE. +7. Let `transaction_id` be the part of `cache_key` after the `:`. +8. If there is no transaction with the ID, `transaction_id`, then return FALSE. +9. Let `transaction` be the transaction with the ID, `transaction_id`. +10. If there is a transaction, `transaction_2`, such that + `transaction_2.timestamp >= transaction.timestamp` and + `transaction.bucket_id = bucket.id`, then return FALSE. +11. Return TRUE. + +Source: req-030
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