Additional parameters for SignedExtra #322
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This should be an up-to-date version of #204 |
jsdw
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Nov 15, 2021
src/extrinsic/extra.rs
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| @@ -230,13 +230,16 @@ impl SignedExtension for ChargeTransactionPayment { | |||
| pub trait SignedExtra<T: Config>: SignedExtension { | |||
| /// The type the extras. | |||
| type Extra: SignedExtension + Send + Sync; | |||
| /// The extra config parameters. | |||
| type Config: Default + Send + Sync; | |||
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Nit: I was initially a bit confused as there is also a Config trait above. Perhaps this should be called something more unique (and vague) like Other, since presumably its goal is simply to allow other arbitrary data to be provided?
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Parameters sounds better. Renamed.
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insipx
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We need to control the transaction longevity in our application. subxt does's have an API to do so.
We can use a custom SignedExtra implementation to fill the CheckMortality parameters. However, a custom SignedExtra has no way to be passed in extra infomation to construct the CheckMortality. This PR add an associated type to allow SignedExtra to carry some custom data to construct the signed extra. Check here for more detail.