Struct pallet_anchors::pallet::Pallet

impl<T: Config> Pallet<T>

pub fn pre_commit( origin: OriginFor<T>, anchor_id: T::Hash, signing_root: T::Hash ) -> DispatchResult

Obtains an exclusive lock to make the next update to a certain document version identified by anchor_id on Centrifuge p2p network for a number of blocks given by PRE_COMMIT_EXPIRATION_DURATION_BLOCKS value. signing_root is a child node of the off-chain merkle tree of that document. In Centrifuge protocol, a document is committed only after reaching consensus with the other collaborators on the document. Consensus is reached by getting a cryptographic signature from other parties by sending them the signing_root. To deny the counter-party the free option of publishing its own state commitment upon receiving a request for signature, the node can first publish a pre-commit. Only the pre-committer account in the Centrifuge chain is allowed to commit a corresponding anchor before the pre-commit has expired. Some funds are reserved on a succesful pre-commit call. These funds are returned to the same account after a succesful Pallet::commit() call or explicitely if evicting the pre-commits by calling Pallet::evict_pre_commits(). For a more detailed explanation refer section 3.4 of Centrifuge Protocol Paper

pub fn commit( origin: OriginFor<T>, anchor_id_preimage: T::Hash, doc_root: T::Hash, proof: T::Hash, stored_until_date: T::Moment ) -> DispatchResult

Commits a document_root of a merklized off chain document in Centrifuge p2p network as the latest version id(anchor_id) obtained by hashing anchor_id_preimage. If a pre-commit exists for the obtained anchor_id, hash of pre-committed signing_root + proof must match the given doc_root. Any pre-committed data is automatically removed on a succesful commit and the reserved funds from Pallet::pre_commit() are returned to the same account. To avoid state bloat on chain, the committed anchor would be evicted after the given stored_until_date. The calling account would be charged accordingly for the storage period. For a more detailed explanation refer section 3.4 of Centrifuge Protocol Paper

pub fn evict_pre_commits( origin: OriginFor<T>, anchor_ids: BoundedVec<T::Hash, ConstU32<EVICT_PRE_COMMIT_LIST_SIZE>> ) -> DispatchResult

Initiates eviction of pre-commits that has expired given a list on anchor ids. For each evicted pre-commits, the deposit holded by Pallet::pre_commit() call will be returned to the same account that made it originally.

pub fn evict_anchors(origin: OriginFor<T>) -> DispatchResult

Initiates eviction of expired anchors. Since anchors are stored on a child trie indexed by their eviction date, what this function does is to remove those child tries which has date_represented_by_root < current_date. Additionally it needs to take care of indexes created for accessing anchors, eg: to find an anchor given an id.

impl<T: Config> Pallet<T>

pub fn get_anchor_by_id( anchor_id: T::Hash ) -> Option<AnchorData<T::Hash, BlockNumberFor<T>>>

Get an anchor by its id in the child storage

pub fn anchor_storage_key(storage_key: &[u8]) -> Vec<u8> ⓘ

impl<T: Config> Pallet<T>

pub fn get_pre_commit<KArg>( k: KArg ) -> Option<PreCommitData<T::Hash, T::AccountId, BlockNumberFor<T>, <<T as Config>::Currency as Currency<<T as Config>::AccountId>>::Balance>>
where KArg: EncodeLike<T::Hash>,

An auto-generated getter for PreCommits.

impl<T: Config> Pallet<T>

pub fn get_anchor_evict_date<KArg>(k: KArg) -> Option<u32>
where KArg: EncodeLike<T::Hash>,

An auto-generated getter for AnchorEvictDates.

impl<T: Config> Pallet<T>

pub fn get_anchor_id_by_index<KArg>(k: KArg) -> Option<T::Hash>
where KArg: EncodeLike<u64>,

An auto-generated getter for AnchorIndexes.

impl<T: Config> Pallet<T>

pub fn get_latest_anchor_index() -> Option<u64>

An auto-generated getter for LatestAnchorIndex.

impl<T: Config> Pallet<T>

pub fn get_latest_evicted_anchor_index() -> Option<u64>

An auto-generated getter for LatestEvictedAnchorIndex.

impl<T: Config> Pallet<T>

pub fn get_latest_evicted_date() -> Option<u32>

An auto-generated getter for LatestEvictedDate.

impl<T: Config> Pallet<T>

pub fn get_evicted_anchor_root_by_day<KArg>( k: KArg ) -> Option<BoundedVec<u8, RootHashSize<T>>>
where KArg: EncodeLike<u32>,

An auto-generated getter for EvictedAnchorRoots.

Trait Implementations§

impl<T: Config> BeforeAllRuntimeMigrations for Pallet<T>

fn before_all_runtime_migrations() -> Weight

Something that should happen before runtime migrations are executed.

fn clone(&self) -> Self

Returns a copy of the value. Read more

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl<T> Debug for Pallet<T>

fn fmt(&self, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

impl<T: Config> GetStorageVersion for Pallet<T>

type CurrentStorageVersion = NoStorageVersionSet

This will be filled out by the pallet macro. Read more

fn current_storage_version() -> Self::CurrentStorageVersion

Returns the current storage version as supported by the pallet.

fn on_chain_storage_version() -> StorageVersion

Returns the on-chain storage version of the pallet as stored in the storage.

fn on_initialize(_n: BlockNumber) -> Weight

Block initialization hook. This is called at the very beginning of block execution. Read more

fn on_finalize(_n: BlockNumber)

Block finalization hook. This is called at the very end of block execution. Read more

fn on_idle(_n: BlockNumber, _remaining_weight: Weight) -> Weight

Hook to consume a block’s idle time. This will run when the block is being finalized (before [Hooks::on_finalize]). Read more

fn on_runtime_upgrade() -> Weight

Hook executed when a code change (aka. a “runtime upgrade”) is detected by FRAME. Read more

fn offchain_worker(_n: BlockNumber)

Implementing this function on a pallet allows you to perform long-running tasks that are dispatched as separate threads, and entirely independent of the main wasm runtime. Read more

fn integrity_test()

Check the integrity of this pallet’s configuration. Read more

impl<T: Config> IntegrityTest for Pallet<T>

fn integrity_test()

See [Hooks::integrity_test].

fn offchain_worker(n: BlockNumberFor<T>)

This function is being called after every block import (when fully synced). Read more

fn on_finalize(n: BlockNumberFor<T>)

See [Hooks::on_finalize].

impl<T: Config> OnGenesis for Pallet<T>

fn on_genesis()

Something that should happen at genesis.

fn on_idle(n: BlockNumberFor<T>, remaining_weight: Weight) -> Weight

See [Hooks::on_idle].

fn on_initialize(n: BlockNumberFor<T>) -> Weight

See [Hooks::on_initialize].

impl<T: Config> OnRuntimeUpgrade for Pallet<T>

fn on_runtime_upgrade() -> Weight

See [Hooks::on_runtime_upgrade].

impl<T: Config> PalletInfoAccess for Pallet<T>

fn index() -> usize

Index of the pallet as configured in the runtime.

fn name() -> &'static str

Name of the pallet as configured in the runtime.

fn name_hash() -> [u8; 16]

Two128 hash of name.

fn module_name() -> &'static str

Name of the Rust module containing the pallet.

fn crate_version() -> CrateVersion

Version of the crate containing the pallet.

impl<T: Config> PalletsInfoAccess for Pallet<T>

fn count() -> usize

The number of pallets’ information that this type represents. Read more

fn infos() -> Vec<PalletInfoData>

All of the pallets’ information that this type represents.

impl<T> PartialEq for Pallet<T>

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: Config> StorageInfoTrait for Pallet<T>

fn storage_info() -> Vec<StorageInfo>

impl<T: Config> WhitelistedStorageKeys for Pallet<T>

fn whitelisted_storage_keys() -> Vec<TrackedStorageKey>

Returns a 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.

impl<T> Eq for Pallet<T>

Auto Trait Implementations§

impl<T> RefUnwindSafe for Pallet<T>
where T: RefUnwindSafe,

impl<T> Send for Pallet<T>
where T: Send,

impl<T> Sync for Pallet<T>
where T: Sync,

impl<T> Unpin for Pallet<T>
where T: Unpin,

impl<T> UnwindSafe for Pallet<T>
where T: UnwindSafe,

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

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Gets the TypeId of self. Read more

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Immutably borrows from an owned value. Read more

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Mutably borrows from an owned value. Read more

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Convert from a value of T into an equivalent instance of Option<Self>. Read more

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Consume self to return Some equivalent value of Option<T>. Read more

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Compare self to key and return true if they are equal.

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Causes self to use its LowerExp implementation when Debug-formatted.

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Causes self to use its LowerHex implementation when Debug-formatted.

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Causes self to use its Octal implementation when Debug-formatted.

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Formats each item in a sequence. Read more

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