System

Calls

fillBlock

A dispatch that will fill the block weight up to the given ratio.

Namespace

api.tx.system.fillBlock

Type

function fillBlock(
  ratio: Perbill
)

killPrefix

Kill all storage items with a key that starts with the given prefix.

NOTE: We rely on the Root origin to provide us the number of subkeys under the prefix we are removing to accurately calculate the weight of this function.

Namespace

api.tx.system.killPrefix

Type

function killPrefix(
  prefix: Bytes,
  subkeys: u32
)

killStorage

Kill some items from storage.

Namespace

api.tx.system.killStorage

Type

function killStorage(
  keys: Vec<Bytes>
)

remark

Make some on-chain remark.

Namespace

api.tx.system.remark

Type

function remark(
  remark: Bytes
)

remarkWithEvent

Make some on-chain remark and emit event.

Namespace

api.tx.system.remarkWithEvent

Type

function remarkWithEvent(
  remark: Bytes
)

setCode

Set the new runtime code.

Namespace

api.tx.system.setCode

Type

function setCode(
  code: Bytes
)

setCodeWithoutChecks

Set the new runtime code without doing any checks of the given code.

Namespace

api.tx.system.setCodeWithoutChecks

Type

function setCodeWithoutChecks(
  code: Bytes
)

setHeapPages

Set the number of pages in the WebAssembly environment's heap.

Namespace

api.tx.system.setHeapPages

Type

function setHeapPages(
  pages: u64
)

setStorage

Set some items of storage.

Namespace

api.tx.system.setStorage

Type

function setStorage(
  items: Vec<(Bytes,Bytes)>
)

Storage

account

The full account information for a particular account ID.

Namespace

api.query.system.account

Type

function account(
  SeedPrimitivesSignatureAccountId20
): FrameSystemAccountInfo

allExtrinsicsLen

Total length (in bytes) for all extrinsics put together, for the current block.

Namespace

api.query.system.allExtrinsicsLen

Type

function allExtrinsicsLen(

): Option<u32>

blockHash

Map of block numbers to block hashes.

Namespace

api.query.system.blockHash

Type

function blockHash(
  u32
): H256

blockWeight

The current weight for the block.

Namespace

api.query.system.blockWeight

Type

function blockWeight(

): FrameSupportDispatchPerDispatchClassWeight

digest

Digest of the current block, also part of the block header.

Namespace

api.query.system.digest

Type

function digest(

): SpRuntimeDigest

eventCount

The number of events in the Events<T> list.

Namespace

api.query.system.eventCount

Type

function eventCount(

): u32

events

Events deposited for the current block.

NOTE: The item is unbound and should therefore never be read on chain. It could otherwise inflate the PoV size of a block.

Events have a large in-memory size. Box the events to not go out-of-memory just in case someone still reads them from within the runtime.

Namespace

api.query.system.events

Type

function events(

): Vec<FrameSystemEventRecord>

eventTopics

Mapping between a topic (represented by T::Hash) and a vector of indexes of events in the <Events<T>> list.

All topic vectors have deterministic storage locations depending on the topic. This allows light-clients to leverage the changes trie storage tracking mechanism and in case of changes fetch the list of events of interest.

The value has the type (T::BlockNumber, EventIndex) because if we used only just the EventIndex then in case if the topic has the same contents on the next block no notification will be triggered thus the event might be lost.

Namespace

api.query.system.eventTopics

Type

function eventTopics(
  H256
): Vec<(u32,u32)>

executionPhase

The execution phase of the block.

Namespace

api.query.system.executionPhase

Type

function executionPhase(

): Option<FrameSystemPhase>

extrinsicCount

Total extrinsics count for the current block.

Namespace

api.query.system.extrinsicCount

Type

function extrinsicCount(

): Option<u32>

extrinsicData

Extrinsics data for the current block (maps an extrinsic's index to its data).

Namespace

api.query.system.extrinsicData

Type

function extrinsicData(
  u32
): Bytes

lastRuntimeUpgrade

Stores the spec_version and spec_name of when the last runtime upgrade happened.

Namespace

api.query.system.lastRuntimeUpgrade

Type

function lastRuntimeUpgrade(

): Option<FrameSystemLastRuntimeUpgradeInfo>

number

The current block number being processed. Set by execute_block.

Namespace

api.query.system.number

Type

function number(

): u32

parentHash

Hash of the previous block.

Namespace

api.query.system.parentHash

Type

function parentHash(

): H256

upgradedToTripleRefCount

True if we have upgraded so that AccountInfo contains three types of RefCount. False (default) if not.

Namespace

api.query.system.upgradedToTripleRefCount

Type

function upgradedToTripleRefCount(

): bool

upgradedToU32RefCount

True if we have upgraded so that type RefCount is u32. False (default) if not.

Namespace

api.query.system.upgradedToU32RefCount

Type

function upgradedToU32RefCount(

): bool

Events

CodeUpdated

:code was updated.

Namespace

api.events.system.CodeUpdated

Type

type CodeUpdated = {

}

ExtrinsicFailed

An extrinsic failed.

Namespace

api.events.system.ExtrinsicFailed

Type

type ExtrinsicFailed = {
  dispatch_error: SpRuntimeDispatchError,
  dispatch_info: FrameSupportDispatchDispatchInfo
}

ExtrinsicSuccess

An extrinsic completed successfully.

Namespace

api.events.system.ExtrinsicSuccess

Type

type ExtrinsicSuccess = {