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option to pre-define or override state (#32)
* option to pre-define or override state * lint * null instead of empty
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| import { ApiPromise } from '@polkadot/api' | ||
| import { Metadata, StorageKey } from '@polkadot/types' | ||
| import { Registry } from '@polkadot/types/types' | ||
| import { StorageEntryMetadataLatest } from '@polkadot/types/interfaces' | ||
| import { createFunction } from '@polkadot/types/metadata/decorate/storage/createFunction' | ||
| import assert from 'assert' | ||
|
|
||
| import { Blockchain } from '../blockchain' | ||
|
|
||
| interface StorageKeyMaker { | ||
| meta: StorageEntryMetadataLatest | ||
| makeKey: (...keys: any[]) => StorageKey | ||
| } | ||
|
|
||
| const storageKeyMaker = | ||
| (registry: Registry, metadata: Metadata) => | ||
| (section: string, method: string): StorageKeyMaker => { | ||
| const pallet = metadata.asLatest.pallets.filter((x) => x.name.toString() === section)[0] | ||
| assert(pallet) | ||
| const meta = pallet.storage | ||
| .unwrap() | ||
| .items.filter((x) => x.name.toString() === method)[0] as any as StorageEntryMetadataLatest | ||
| assert(meta) | ||
|
|
||
| const storageFn = createFunction( | ||
| registry, | ||
| { | ||
| meta, | ||
| prefix: section, | ||
| section, | ||
| method, | ||
| }, | ||
| {} | ||
| ) | ||
|
|
||
| return { | ||
| meta, | ||
| makeKey: (...keys: any[]): StorageKey => new StorageKey(registry, [storageFn, keys]), | ||
| } | ||
| } | ||
|
|
||
| function objectToStorageItems( | ||
| api: ApiPromise, | ||
| storage: Record<string, Record<string, any | [any, any][]>> | ||
| ): [string, string | null][] { | ||
| const storageItems: [string, string | null][] = [] | ||
| for (const sectionName in storage) { | ||
| const section = storage[sectionName] | ||
| for (const storageName in section) { | ||
| const storage = section[storageName] | ||
| const { makeKey, meta } = storageKeyMaker(api.registry, api.runtimeMetadata)(sectionName, storageName) | ||
| if (meta.type.isPlain) { | ||
| const key = makeKey() | ||
| storageItems.push([key.toHex(), storage ? api.createType(key.outputType, storage).toHex(true) : null]) | ||
| } else { | ||
| for (const [keys, value] of storage) { | ||
| const key = makeKey(...keys) | ||
| storageItems.push([key.toHex(), value ? api.createType(key.outputType, value).toHex(true) : null]) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return storageItems | ||
| } | ||
|
|
||
| export const setStorage = async ( | ||
| chain: Blockchain, | ||
| storage: [string, string][] | Record<string, Record<string, any | Record<string, any>>> | ||
| ): Promise<void> => { | ||
| let storageItems: [string, string | null][] | ||
| if (Array.isArray(storage)) { | ||
| storageItems = storage | ||
| } else { | ||
| storageItems = objectToStorageItems(chain.api, storage) | ||
| } | ||
| const block = await chain.getBlock() | ||
| assert(block) | ||
| block.pushStorageLayer().setAll(storageItems) | ||
| } |