You can call this simple counter contract with 1Tgas attached and it works.
And you'll see that both NEAR Explorer and nearblocks.io agree that you attached only 1 Tgas but somehow used 5 Tgas.
How is this possible?
1 Answers
Reading through these two chapters may be useful to understand the concepts:
- transactions https://docs.near.org/concepts/basics/transactions/overview
- gas https://docs.near.org/concepts/basics/transactions/gas
I'm by no means an expert, so this answer is a guess more than anything.
When a user calls a method on your contract, they are automatically deducted a fixed amount (gas) set by the contract configurations. For example
action_function_call_send_sir: 2_319_861_500_000action_function_call_execution: 2_319_861_500_000action_receipt_creation_send_sir: 108_059_500_000
With these assumptions, the attached gas doesn't need to be higher than the gas used. If the total sum of "automatically deducted gas" + "attached gas" is more than what's actually burned, you'll get a refund.
From your transaction, you are refunded 0.00005Ⓝ. If you try to attach even less gas, e.g. 579279990000, you'll still be able to call the method, and you'll be refunded a little less 0.00001Ⓝ (See this transaction)
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