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23 changes: 23 additions & 0 deletions
23
...kadot-sdk/parachains/zero-to-hero/add-pallets-to-runtime/pallets/custom-pallet/Cargo.toml
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| [package] | ||
| name = "custom-pallet-2" | ||
| version = "0.1.0" | ||
| license.workspace = true | ||
| authors.workspace = true | ||
| homepage.workspace = true | ||
| repository.workspace = true | ||
| edition.workspace = true | ||
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| [dependencies] | ||
| codec = { features = ["derive"], workspace = true } | ||
| scale-info = { features = ["derive"], workspace = true } | ||
| frame-support.workspace = true | ||
| frame-system.workspace = true | ||
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| [dev-dependencies] | ||
| sp-core = { workspace = true, default-features = true } | ||
| sp-io = { workspace = true, default-features = true } | ||
| sp-runtime = { workspace = true, default-features = true } | ||
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| [features] | ||
| default = ["std"] | ||
| std = ["codec/std", "frame-support/std", "frame-system/std", "scale-info/std"] |
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...kadot-sdk/parachains/zero-to-hero/add-pallets-to-runtime/pallets/custom-pallet/src/lib.rs
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| #![cfg_attr(not(feature = "std"), no_std)] | ||
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| pub use pallet::*; | ||
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| #[cfg(test)] | ||
| mod mock; | ||
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| #[cfg(test)] | ||
| mod tests; | ||
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| #[frame_support::pallet(dev_mode)] | ||
| pub mod pallet { | ||
| use super::*; | ||
| use frame_support::pallet_prelude::*; | ||
| use frame_system::pallet_prelude::*; | ||
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| #[pallet::pallet] | ||
| pub struct Pallet<T>(_); | ||
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| // Configuration trait for the pallet | ||
| #[pallet::config] | ||
| pub trait Config: frame_system::Config { | ||
| // Defines the event type for the pallet | ||
| type RuntimeEvent: From<Event<Self>> + IsType<<Self as frame_system::Config>::RuntimeEvent>; | ||
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| // Defines the maximum value the counter can hold | ||
| #[pallet::constant] | ||
| type CounterMaxValue: Get<u32>; | ||
| } | ||
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| #[pallet::event] | ||
| #[pallet::generate_deposit(pub(super) fn deposit_event)] | ||
| pub enum Event<T: Config> { | ||
| /// The counter value has been set to a new value by Root. | ||
| CounterValueSet { | ||
| /// The new value set. | ||
| counter_value: u32, | ||
| }, | ||
| /// A user has successfully incremented the counter. | ||
| CounterIncremented { | ||
| /// The new value set. | ||
| counter_value: u32, | ||
| /// The account who incremented the counter. | ||
| who: T::AccountId, | ||
| /// The amount by which the counter was incremented. | ||
| incremented_amount: u32, | ||
| }, | ||
| /// A user has successfully decremented the counter. | ||
| CounterDecremented { | ||
| /// The new value set. | ||
| counter_value: u32, | ||
| /// The account who decremented the counter. | ||
| who: T::AccountId, | ||
| /// The amount by which the counter was decremented. | ||
| decremented_amount: u32, | ||
| }, | ||
| } | ||
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| /// Storage for the current value of the counter. | ||
| #[pallet::storage] | ||
| pub type CounterValue<T> = StorageValue<_, u32>; | ||
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| /// Storage map to track the number of interactions performed by each account. | ||
| #[pallet::storage] | ||
| pub type UserInteractions<T: Config> = StorageMap<_, Twox64Concat, T::AccountId, u32>; | ||
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| #[pallet::error] | ||
| pub enum Error<T> { | ||
| /// The counter value exceeds the maximum allowed value. | ||
| CounterValueExceedsMax, | ||
| /// The counter value cannot be decremented below zero. | ||
| CounterValueBelowZero, | ||
| /// Overflow occurred in the counter. | ||
| CounterOverflow, | ||
| /// Overflow occurred in user interactions. | ||
| UserInteractionOverflow, | ||
| } | ||
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| #[pallet::call] | ||
| impl<T: Config> Pallet<T> { | ||
| /// Set the value of the counter. | ||
| /// | ||
| /// The dispatch origin of this call must be _Root_. | ||
| /// | ||
| /// - `new_value`: The new value to set for the counter. | ||
| /// | ||
| /// Emits `CounterValueSet` event when successful. | ||
| #[pallet::call_index(0)] | ||
| #[pallet::weight(0)] | ||
| pub fn set_counter_value(origin: OriginFor<T>, new_value: u32) -> DispatchResult { | ||
| ensure_root(origin)?; | ||
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| ensure!( | ||
| new_value <= T::CounterMaxValue::get(), | ||
| Error::<T>::CounterValueExceedsMax | ||
| ); | ||
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| CounterValue::<T>::put(new_value); | ||
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| Self::deposit_event(Event::<T>::CounterValueSet { | ||
| counter_value: new_value, | ||
| }); | ||
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| Ok(()) | ||
| } | ||
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| /// Increment the counter by a specified amount. | ||
| /// | ||
| /// This function can be called by any signed account. | ||
| /// | ||
| /// - `amount_to_increment`: The amount by which to increment the counter. | ||
| /// | ||
| /// Emits `CounterIncremented` event when successful. | ||
| #[pallet::call_index(1)] | ||
| #[pallet::weight(0)] | ||
| pub fn increment(origin: OriginFor<T>, amount_to_increment: u32) -> DispatchResult { | ||
| let who = ensure_signed(origin)?; | ||
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| let current_value = CounterValue::<T>::get().unwrap_or(0); | ||
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| let new_value = current_value | ||
| .checked_add(amount_to_increment) | ||
| .ok_or(Error::<T>::CounterOverflow)?; | ||
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| ensure!( | ||
| new_value <= T::CounterMaxValue::get(), | ||
| Error::<T>::CounterValueExceedsMax | ||
| ); | ||
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| CounterValue::<T>::put(new_value); | ||
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| UserInteractions::<T>::try_mutate(&who, |interactions| -> Result<_, Error<T>> { | ||
| let new_interactions = interactions | ||
| .unwrap_or(0) | ||
| .checked_add(1) | ||
| .ok_or(Error::<T>::UserInteractionOverflow)?; | ||
| *interactions = Some(new_interactions); // Store the new value | ||
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| Ok(()) | ||
| })?; | ||
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| Self::deposit_event(Event::<T>::CounterIncremented { | ||
| counter_value: new_value, | ||
| who, | ||
| incremented_amount: amount_to_increment, | ||
| }); | ||
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| Ok(()) | ||
| } | ||
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| /// Decrement the counter by a specified amount. | ||
| /// | ||
| /// This function can be called by any signed account. | ||
| /// | ||
| /// - `amount_to_decrement`: The amount by which to decrement the counter. | ||
| /// | ||
| /// Emits `CounterDecremented` event when successful. | ||
| #[pallet::call_index(2)] | ||
| #[pallet::weight(0)] | ||
| pub fn decrement(origin: OriginFor<T>, amount_to_decrement: u32) -> DispatchResult { | ||
| let who = ensure_signed(origin)?; | ||
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| let current_value = CounterValue::<T>::get().unwrap_or(0); | ||
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| let new_value = current_value | ||
| .checked_sub(amount_to_decrement) | ||
| .ok_or(Error::<T>::CounterValueBelowZero)?; | ||
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| CounterValue::<T>::put(new_value); | ||
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| UserInteractions::<T>::try_mutate(&who, |interactions| -> Result<_, Error<T>> { | ||
| let new_interactions = interactions | ||
| .unwrap_or(0) | ||
| .checked_add(1) | ||
| .ok_or(Error::<T>::UserInteractionOverflow)?; | ||
| *interactions = Some(new_interactions); // Store the new value | ||
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| Ok(()) | ||
| })?; | ||
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| Self::deposit_event(Event::<T>::CounterDecremented { | ||
| counter_value: new_value, | ||
| who, | ||
| decremented_amount: amount_to_decrement, | ||
| }); | ||
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| Ok(()) | ||
| } | ||
| } | ||
| } |
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...s/polkadot-sdk/parachains/zero-to-hero/add-pallets-to-runtime/pallets/template/Cargo.toml
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,49 @@ | ||
| [package] | ||
| name = "pallet-parachain-template" | ||
| description = "FRAME pallet template for defining custom runtime logic." | ||
| version = "0.1.0" | ||
| license = "Unlicense" | ||
| authors.workspace = true | ||
| homepage.workspace = true | ||
| repository.workspace = true | ||
| edition.workspace = true | ||
| publish = false | ||
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| [package.metadata.docs.rs] | ||
| targets = ["x86_64-unknown-linux-gnu"] | ||
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| [dependencies] | ||
| codec = { features = ["derive"], workspace = true } | ||
| scale-info = { features = ["derive"], workspace = true } | ||
| frame-benchmarking = { optional = true, workspace = true } | ||
| frame-support.workspace = true | ||
| frame-system.workspace = true | ||
| sp-runtime.workspace = true | ||
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| [dev-dependencies] | ||
| sp-core = { default-features = true, workspace = true } | ||
| sp-io = { default-features = true, workspace = true } | ||
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| [features] | ||
| default = ["std"] | ||
| runtime-benchmarks = [ | ||
| "frame-benchmarking/runtime-benchmarks", | ||
| "frame-support/runtime-benchmarks", | ||
| "frame-system/runtime-benchmarks", | ||
| "sp-runtime/runtime-benchmarks", | ||
| ] | ||
| std = [ | ||
| "codec/std", | ||
| "scale-info/std", | ||
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| "frame-benchmarking?/std", | ||
| "frame-support/std", | ||
| "frame-system/std", | ||
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| "sp-runtime/std", | ||
| ] | ||
| try-runtime = [ | ||
| "frame-support/try-runtime", | ||
| "frame-system/try-runtime", | ||
| "sp-runtime/try-runtime", | ||
| ] |
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...t-sdk/parachains/zero-to-hero/add-pallets-to-runtime/pallets/template/README.md
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| Original file line number | Diff line number | Diff line change |
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| ## Release | ||
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| Polkadot SDK stable2409 |
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