schedule_named
Call v133 → current #2Schedule a named task for future execution with a unique identifier.
View calls on chainCall Workflow
This diagram shows the call execution flow: starting with schedule_named, passing through validation
(signature, nonce, mortality, fee payment), then pre-dispatch checks, followed by dispatch which emits events: Scheduled and modifies storage: Agenda, Lookup, and finally post-dispatch where ExtrinsicSuccess is emitted and fees are settled.
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Used by: developersanalytics
The Big Picture
Named scheduling adds an identifier making it easier to cancel or query tasks.
Use Cases
- Schedule operations that may need cancellation by name
- Create identifiable tasks
From Chain Metadata
Schedule a named task.
Input Parameters
| # | Name | Type | Description |
|---|---|---|---|
| 0 | id | [u8; 32] [32] | id ([u8; 32]) |
| 1 | when | u32 | when (u32) |
| 2 | maybe_periodic | Option | maybe_periodic (Option) |
| 3 | priority | u8 | priority (u8) |
| 4 | call | RuntimeCall | call (RuntimeCall) |
Permissions
Origin
Unknown
Required Role
Permission data inferred from metadata. May be incomplete.
Requirements
- Caller has permission
- Target block in future
- Name not in use
Effects
Code Examples
import { ApiPromise, WsProvider } from "@polkadot/api";
import { stringCamelCase } from "@polkadot/util";
const provider = new WsProvider("wss://entrypoint-finney.opentensor.ai:443");
const api = await ApiPromise.create({ provider });
// Build schedule_named call
const id = 0;
const when = 0;
const maybe_periodic = 0 as any /* Option */;
const priority = 0;
const call = 0 as any /* RuntimeCall */;
const call = api.tx[stringCamelCase("Scheduler")][stringCamelCase("schedule_named")](
id,
when,
maybe_periodic,
priority,
call
);Runtime Info
- Pallet Index
- 15
- Call Index
- 2
- First Version
- v133
- Current Version
- v393