Crate sp_state_machine
source · [−]Expand description
Substrate state machine implementation.
Re-exports
pub use crate::backend::Backend;Modules
State machine backends. These manage the code and storage of contracts.
Macros
Logs a message at the debug level.
Logs a message at the error level.
Logs a message at the trace level.
Logs a message at the warn level.
Structs
Simple Map-based Externalities impl.
Block identifier that could be used to determine fork of this block.
Changes trie build cache.
Blocks range where configuration has been constant.
Changes tries state at some block.
Wraps a read-only backend, call executor, and current overlayed changes.
In-memory implementation of changes trie storage.
In-memory storage for offchain workers recoding changes for the actual offchain storage implementation.
The set of changes that are overlaid onto the backend.
Patricia trie-based backend which also tracks all touched storage trie values. These can be sent to remote node and used as a proof of execution.
Patricia trie-based backend specialized in get value proofs.
Simple read-only externalities for any backend.
The substrate state machine.
Accumulated usage statistics specific to state machine crate.
A storage changes structure that can be generated by the data collected in OverlayedChanges.
A proof that some set of key-value pairs are included in the storage trie. The proof contains the storage values so that the partial storage backend can be reconstructed by a verifier that does not already have access to the key-value pairs.
The storage transaction are calculated as part of the storage_root and
changes_trie_storage_root. These transactions can be reused for importing the block into the
storage. So, we cache them to not require a recomputation of those transactions.
Simple HashMap-based Externalities impl.
Patricia trie-based backend. Transaction type is an overlay of changes to commit.
Usage statistics for state backend.
Measured count of operations and total bytes.
Enums
Storage backend trust level.
The action to perform when block-with-changes-trie is imported.
Externalities Error.
Like ExecutionStrategy only it also stores a handler in case of consensus failure.
Strategy for executing a call into the runtime.
Traits
Requirements for block number that can be used with changes tries.
Changes trie storage. Provides access to trie roots and trie nodes.
Changes trie storage. Provides access to trie roots and trie nodes.
State Machine Error bound.
Trait for inspecting state in any backend.
Patricia trie-based storage trait.
Key-value pairs storage that is used by trie backend essence.
A key-value datastore implemented as a database-backed modified Merkle tree.
Functions
Create proof check backend.
Create state where changes tries are disabled.
Check execution proof, generated by prove_execution call.
Check execution proof on proving backend, generated by prove_execution call.
Return changes of given key at given blocks range.
max is the number of best known block.
Changes are returned in descending order (i.e. last block comes first).
Returns proof of changes of given key at given blocks range.
max is the number of best known block.
Check key changes proof and return changes of the key at given blocks range.
max is the number of best known block.
Changes are returned in descending order (i.e. last block comes first).
Similar to the key_changes_proof_check function, but works with prepared proof storage.
Evaluate to ExecutionManager::NativeElseWasm, without having to figure out the type.
Create a new empty instance of in-memory backend.
Generate child storage read proof.
Generate storage read proof on pre-created trie backend.
Prove execution using the given state backend, overlayed changes, and call executor.
Prove execution using the given trie backend, overlayed changes, and call executor. Produces a state-backend-specific “transaction” which can be used to apply the changes to the backing store, such as the disk. Execution proof is the set of all ‘touched’ storage DBValues from the backend.
Generate storage read proof.
Generate storage read proof on pre-created trie backend.
Prune obsolete changes tries. Pruning happens at the same block, where highest
level digest is created. Pruning guarantees to save changes tries for last
min_blocks_to_keep blocks. We only prune changes tries at max_digest_interval
ranges.
Check child storage read proof, generated by prove_child_read call.
Check child storage read proof on pre-created proving backend.
Check storage read proof, generated by prove_read call.
Check storage read proof on pre-created proving backend.
Type Definitions
Type of changes trie transaction.
In memory arrays of storage values for multiple child tries.
Database value
Default error type to use with state machine trie backend.
Default handler of the execution manager.
Trie backend with in-memory storage.
Reexport from hash_db, with genericity set for Hasher trait.
This uses a noops KeyFunction (key addressing must be hashed or using
an encoding scheme that avoid key conflict).
In memory array of storage values.
Global proof recorder, act as a layer over a hash db for recording queried data.
In memory array of storage values.
Storage key.
Storage value.
Persistent trie database write-access interface for the a given hasher.