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Fix ComposedStorage

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This commit is contained in:
haad 2023-03-09 08:33:42 +02:00
parent bf1165fd08
commit 946aefd4f6
1 changed files with 31 additions and 20 deletions
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51
src/storage/composed.js
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@ -1,41 +1,51 @@
const ComposedStorage = async (...storages) => { // Compose storages:
// const storage1 = await ComposedStorage(await LRUStorage(), await LevelStorage())
// const storage2 = await ComposedStorage(storage1, await IPFSBlockStorage())
const ComposedStorage = async (storage1, storage2) => {
const put = async (hash, data) => { const put = async (hash, data) => {
for await (const storage of storages) { await storage1.put(hash, data)
await storage.put(hash, data) await storage2.put(hash, data)
}
} }
const get = async (hash) => { const get = async (hash) => {
for await (const storage of storages) { let value = await storage1.get(hash)
const value = await storage.get(hash) if (!value) {
value = await storage2.get(hash)
if (value) { if (value) {
return value await storage1.put(hash, value)
} }
} }
return value
} }
const iterator = async function * () { const iterator = async function * () {
return storages[0].iterator() const keys = []
} for (const storage of [storage1, storage2]) {
for await (const [key, value] of storage.iterator()) {
const merge = async (other) => { if (!keys[key]) {
for await (const storage1 of storages) { keys[key] = true
for await (const storage2 of storages) { yield [key, value]
await storage1.merge(storage2) }
} }
} }
} }
const merge = async (other) => {
await storage1.merge(other)
await storage2.merge(other)
await other.merge(storage1)
await other.merge(storage2)
}
const clear = async () => { const clear = async () => {
for await (const storage of storages) { await storage1.clear()
await storage.clear() await storage2.clear()
}
} }
const close = async () => { const close = async () => {
for await (const storage of storages) { await storage1.close()
await storage.close() await storage2.close()
}
} }
return { return {
@ -49,3 +59,4 @@ const ComposedStorage = async (...storages) => {
} }
export default ComposedStorage export default ComposedStorage