pub type Module<T> = Pallet<T>;
Pallet
insteadExpand description
Type alias to Pallet
, to be used by construct_runtime
.
Generated by pallet
attribute macro.
Aliased Type§
struct Module<T>(/* private fields */);
Implementations
Source§impl<T: Config> Pallet<T>
A public part of the pallet.
impl<T: Config> Pallet<T>
A public part of the pallet.
Sourcepub fn submit_price(
origin: OriginFor<T>,
price: u32,
) -> DispatchResultWithPostInfo
pub fn submit_price( origin: OriginFor<T>, price: u32, ) -> DispatchResultWithPostInfo
Submit new price to the list.
This method is a public function of the module and can be called from within
a transaction. It appends given price
to current list of prices.
In our example the offchain worker
will create, sign & submit a transaction that
calls this function passing the price.
The transaction needs to be signed (see ensure_signed
) check, so that the caller
pays a fee to execute it.
This makes sure that it’s not easy (or rather cheap) to attack the chain by submitting
excessive transactions, but note that it doesn’t ensure the price oracle is actually
working and receives (and provides) meaningful data.
This example is not focused on correctness of the oracle itself, but rather its
purpose is to showcase offchain worker capabilities.
Sourcepub fn submit_price_unsigned(
origin: OriginFor<T>,
_block_number: BlockNumberFor<T>,
price: u32,
) -> DispatchResultWithPostInfo
pub fn submit_price_unsigned( origin: OriginFor<T>, _block_number: BlockNumberFor<T>, price: u32, ) -> DispatchResultWithPostInfo
Submit new price to the list via unsigned transaction.
Works exactly like the submit_price
function, but since we allow sending the
transaction without a signature, and hence without paying any fees,
we need a way to make sure that only some transactions are accepted.
This function can be called only once every T::UnsignedInterval
blocks.
Transactions that call that function are de-duplicated on the pool level
via validate_unsigned
implementation and also are rendered invalid if
the function has already been called in current “session”.
It’s important to specify weight
for unsigned calls as well, because even though
they don’t charge fees, we still don’t want a single block to contain unlimited
number of such transactions.
This example is not focused on correctness of the oracle itself, but rather its purpose is to showcase offchain worker capabilities.
pub fn submit_price_unsigned_with_signed_payload( origin: OriginFor<T>, price_payload: PricePayload<T::Public, BlockNumberFor<T>>, _signature: T::Signature, ) -> DispatchResultWithPostInfo
Trait Implementations
Source§impl<T: Config> BeforeAllRuntimeMigrations for Pallet<T>
impl<T: Config> BeforeAllRuntimeMigrations for Pallet<T>
Source§fn before_all_runtime_migrations() -> Weight
fn before_all_runtime_migrations() -> Weight
Source§impl<T: Config> GetStorageVersion for Pallet<T>
impl<T: Config> GetStorageVersion for Pallet<T>
Source§type InCodeStorageVersion = NoStorageVersionSet
type InCodeStorageVersion = NoStorageVersionSet
Source§fn in_code_storage_version() -> Self::InCodeStorageVersion
fn in_code_storage_version() -> Self::InCodeStorageVersion
storage_version
attribute, or
[NoStorageVersionSet
] if the attribute is missing.Source§fn on_chain_storage_version() -> StorageVersion
fn on_chain_storage_version() -> StorageVersion
§fn current_storage_version() -> Self::InCodeStorageVersion
fn current_storage_version() -> Self::InCodeStorageVersion
in_code_storage_version
and will be removed after March 2024.Self::current_storage_version
] instead. Read moreSource§impl<T: Config> Hooks<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
impl<T: Config> Hooks<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
Source§fn offchain_worker(block_number: BlockNumberFor<T>)
fn offchain_worker(block_number: BlockNumberFor<T>)
Offchain Worker entry point.
By implementing fn offchain_worker
you declare a new offchain worker.
This function will be called when the node is fully synced and a new best block is
successfully imported.
Note that it’s not guaranteed for offchain workers to run on EVERY block, there might
be cases where some blocks are skipped, or for some the worker runs twice (re-orgs),
so the code should be able to handle that.
You can use Local Storage
API to coordinate runs of the worker.
§fn on_initialize(_n: BlockNumber) -> Weight
fn on_initialize(_n: BlockNumber) -> Weight
§fn on_finalize(_n: BlockNumber)
fn on_finalize(_n: BlockNumber)
§fn on_idle(_n: BlockNumber, _remaining_weight: Weight) -> Weight
fn on_idle(_n: BlockNumber, _remaining_weight: Weight) -> Weight
Hooks::on_finalize
]). Read more§fn on_poll(_n: BlockNumber, _weight: &mut WeightMeter)
fn on_poll(_n: BlockNumber, _weight: &mut WeightMeter)
§fn on_runtime_upgrade() -> Weight
fn on_runtime_upgrade() -> Weight
Executive
pallet. Read more§fn try_state(_n: BlockNumber) -> Result<(), DispatchError>
fn try_state(_n: BlockNumber) -> Result<(), DispatchError>
§fn pre_upgrade() -> Result<Vec<u8>, DispatchError>
fn pre_upgrade() -> Result<Vec<u8>, DispatchError>
§fn post_upgrade(_state: Vec<u8>) -> Result<(), DispatchError>
fn post_upgrade(_state: Vec<u8>) -> Result<(), DispatchError>
§fn integrity_test()
fn integrity_test()
Source§impl<T: Config> IntegrityTest for Pallet<T>
impl<T: Config> IntegrityTest for Pallet<T>
Source§fn integrity_test()
fn integrity_test()
Hooks::integrity_test
].Source§impl<T: Config> OffchainWorker<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
impl<T: Config> OffchainWorker<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
Source§fn offchain_worker(n: BlockNumberFor<T>)
fn offchain_worker(n: BlockNumberFor<T>)
Source§impl<T: Config> OnFinalize<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
impl<T: Config> OnFinalize<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
Source§fn on_finalize(n: BlockNumberFor<T>)
fn on_finalize(n: BlockNumberFor<T>)
Hooks::on_finalize
].Source§impl<T: Config> OnGenesis for Pallet<T>
impl<T: Config> OnGenesis for Pallet<T>
Source§fn on_genesis()
fn on_genesis()
Source§impl<T: Config> OnIdle<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
impl<T: Config> OnIdle<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
Source§impl<T: Config> OnInitialize<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
impl<T: Config> OnInitialize<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
Source§fn on_initialize(n: BlockNumberFor<T>) -> Weight
fn on_initialize(n: BlockNumberFor<T>) -> Weight
Hooks::on_initialize
].Source§impl<T: Config> OnPoll<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
impl<T: Config> OnPoll<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
Source§impl<T: Config> OnRuntimeUpgrade for Pallet<T>
impl<T: Config> OnRuntimeUpgrade for Pallet<T>
Source§fn on_runtime_upgrade() -> Weight
fn on_runtime_upgrade() -> Weight
Hooks::on_runtime_upgrade
].§fn try_on_runtime_upgrade(checks: bool) -> Result<Weight, DispatchError>
fn try_on_runtime_upgrade(checks: bool) -> Result<Weight, DispatchError>
pre_upgrade
->
on_runtime_upgrade
-> post_upgrade
hooks for a migration. Read moreSource§impl<T: Config> PalletInfoAccess for Pallet<T>
impl<T: Config> PalletInfoAccess for Pallet<T>
Source§fn module_name() -> &'static str
fn module_name() -> &'static str
Source§fn crate_version() -> CrateVersion
fn crate_version() -> CrateVersion
Source§impl<T: Config> TryState<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
impl<T: Config> TryState<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>
Source§impl<T: Config> ValidateUnsigned for Pallet<T>
impl<T: Config> ValidateUnsigned for Pallet<T>
Source§fn validate_unsigned(
_source: TransactionSource,
call: &Self::Call,
) -> TransactionValidity
fn validate_unsigned( _source: TransactionSource, call: &Self::Call, ) -> TransactionValidity
Validate unsigned call to this module.
By default unsigned transactions are disallowed, but implementing the validator here we make sure that some particular calls (the ones produced by offchain worker) are being whitelisted and marked as valid.
§fn pre_dispatch(call: &Self::Call) -> Result<(), TransactionValidityError>
fn pre_dispatch(call: &Self::Call) -> Result<(), TransactionValidityError>
Source§impl<T: Config> WhitelistedStorageKeys for Pallet<T>
impl<T: Config> WhitelistedStorageKeys for Pallet<T>
Source§fn whitelisted_storage_keys() -> Vec<TrackedStorageKey>
fn whitelisted_storage_keys() -> Vec<TrackedStorageKey>
Vec<TrackedStorageKey>
indicating the storage keys that
should be whitelisted during benchmarking. This means that those keys
will be excluded from the benchmarking performance calculation.