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Distinguish when MinXcmFee is not registered and FeeNotEnough #753

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Merged
zqhxuyuan merged 6 commits into from
Jun 5, 2022
+29 −19
Merged

Distinguish when MinXcmFee is not registered and FeeNotEnough #753

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92e83dc
Make xcm min fee return option
ghzlatarev May 26, 2022
b34836e
Fix test
ghzlatarev May 26, 2022
fd97173
Add default impl for MinXcmFee::GetByKey
ghzlatarev May 30, 2022
21ec159
Correct another accourance of MinXcmFee impl in comments
ghzlatarev May 30, 2022
c95109f
Move default impl to xcm-support. Cooments and fmt
ghzlatarev May 31, 2022
d64f59c
Fix test in asset-registry
ghzlatarev May 31, 2022
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Correct another accourance of MinXcmFee impl in comments 
Signed-off-by: Georgi Zlatarev <[email protected]>
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@ghzlatarev
ghzlatarev committed May 30, 2022
commit 21ec1597b201c33213c52b569e953a9e26a29faa
12 changes: 6 additions & 6 deletions xtokens/README.md
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Expand Up @@ -51,22 +51,22 @@ Parachains should implements config `MinXcmFee` in `xtokens` module config:

```rust
parameter_type_with_key! {
pub ParachainMinFee: |location: MultiLocation| -> u128 {
pub ParachainMinFee: |location: MultiLocation| -> Option<u128> {
#[allow(clippy::match_ref_pats)] // false positive
match (location.parents, location.first_interior()) {
(1, Some(Parachain(parachains::statemine::ID))) => 4_000_000_000,
_ => u128::MAX,
(1, Some(Parachain(parachains::statemine::ID))) => Some(4_000_000_000),
_ => None,
}
};
}
```

If Parachain don't want have this case, can simply return Max value:
If Parachain don't want have this case, can simply return None:

```rust
parameter_type_with_key! {
pub ParachainMinFee: |_location: MultiLocation| -> u128 {
u128::MAX
pub ParachainMinFee: |_location: MultiLocation| -> Option<u128> {
None
};
}
```
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