Questions tagged [chain-extension]
The chain-extension tag has no usage guidance.
8
questions
1
vote
1
answer
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views
How can I increase contract memory in pallet-contracts + chain-extension?
I am exposing some external functions to ink! contracts via a chain-extension in pallet-contracts. I am essentially passing a vector of bytes as a parameter to a contract method and directly ...
- 13
1
vote
1
answer
33
views
Contract CodeRejected when using chain extension
I've recently upgraded my chain to the latest substrate master, however, I'm unable to deploy contracts that use a chain extension. When I try to use a chain extension, the contract fails to deploy ...
- 333
1
vote
1
answer
21
views
How to retrieve dynamic type size data from chain extension in ink? [duplicate]
my example looks like this :
#[ink(extension = 1111]
fn asset_name(asset_id: u32) -> Result<[u8], PalletAssetErr>
or this
fn asset_name(asset_id: u32) -> Result<[u8], PalletAssetErr>...
- 31
2
votes
1
answer
35
views
How to return error from chain extension?
I saw how to handle error from chain extension on smart contract side
https://paritytech.github.io/ink-docs/macros-attributes/chain-extension#error-code
But I can't find example
and can't understand ...
- 31
4
votes
1
answer
53
views
How to benchmark a chain extension?
I would like to know the recommended way to benchmark a chain extension, and then how to charge the calculated weight. According to this document, we need to write benchmarks.
- 131
4
votes
2
answers
69
views
Correct way to use dynamic sized types in chain extension
I'm writing chain extensions for my pallets and I have a few functions that require dynamic sized types, for example Vec<u8> for metadata and Vec<u64> for a list of asset ids.
The way I am ...
5
votes
2
answers
87
views
How do I test a chain extension used in the runtime?
I am aware of this example that shows how to create a mock chain extension and test that. However, I do not know how to test the chain extension that is used by the runtime and calling functions from ...
- 131
2
votes
1
answer
41
views
Chain Extension func_id enumeration is resulting in ContractTrapped for func ids greater than 1
I'm encountering an issue where a contract is only able to called functions in my chain extension if they are enumerated with function ids 0 and 1.
My chain extension has four functions, lets say ...
- 333