Bastian-Greshake-Tzovaras/MapComplete
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Refactoring: port import flow

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This commit is contained in:
Pieter Vander Vennet 2023-06-01 02:52:21 +02:00
parent 8ed4da4e9d
commit ace7caada1
48 changed files with 852 additions and 574 deletions
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38
Logic/FeatureSource/Actors/TileLocalStorage.ts
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@ -1,5 +1,5 @@
import { IdbLocalStorage } from "../../Web/IdbLocalStorage"
import { UIEventSource } from "../../UIEventSource"
import {IdbLocalStorage} from "../../Web/IdbLocalStorage"
import {UIEventSource} from "../../UIEventSource"
/**
* A class which allows to read/write a tile to local storage.
@ -10,23 +10,25 @@ import { UIEventSource } from "../../UIEventSource"
*/
export default class TileLocalStorage<T> {
private static perLayer: Record<string, TileLocalStorage<any>> = {}
private static readonly useIndexedDb = typeof indexedDB !== "undefined"
private readonly _layername: string
private readonly inUse = new UIEventSource(false)
private readonly cachedSources: Record<number, UIEventSource<T> & { flush: () => void }> = {}
private readonly _maxAgeSeconds: number;
private static readonly useIndexedDb = typeof indexedDB !== "undefined"
private constructor(layername: string) {
private constructor(layername: string, maxAgeSeconds: number) {
this._layername = layername
this._maxAgeSeconds = maxAgeSeconds;
}
public static construct<T>(backend: string, layername: string): TileLocalStorage<T> {
public static construct<T>(backend: string, layername: string, maxAgeS: number): TileLocalStorage<T> {
const key = backend + "_" + layername
const cached = TileLocalStorage.perLayer[key]
if (cached) {
return cached
}
const tls = new TileLocalStorage<T>(key)
const tls = new TileLocalStorage<T>(key, maxAgeS)
TileLocalStorage.perLayer[key] = tls
return tls
}
@ -50,13 +52,15 @@ export default class TileLocalStorage<T> {
}
private async SetIdb(tileIndex: number, data: any): Promise<void> {
if(!TileLocalStorage.useIndexedDb){
if (!TileLocalStorage.useIndexedDb) {
return
}
try {
await this.inUse.AsPromise((inUse) => !inUse)
this.inUse.setData(true)
await IdbLocalStorage.SetDirectly(this._layername + "_" + tileIndex, data)
await IdbLocalStorage.SetDirectly(this._layername + "_" + tileIndex + "_date", Date.now())
this.inUse.setData(false)
} catch (e) {
console.error(
@ -72,10 +76,24 @@ export default class TileLocalStorage<T> {
}
}
private GetIdb(tileIndex: number): Promise<any> {
if(!TileLocalStorage.useIndexedDb){
private async GetIdb(tileIndex: number): Promise<any> {
if (!TileLocalStorage.useIndexedDb) {
return undefined
}
return IdbLocalStorage.GetDirectly(this._layername + "_" + tileIndex)
const date = <any>await IdbLocalStorage.GetDirectly(this._layername + "_" + tileIndex + "_date")
const maxAge = this._maxAgeSeconds
const timeDiff = Date.now() - date
if (timeDiff >= maxAge) {
console.log("Dropping cache for", this._layername, tileIndex, "out of date")
await IdbLocalStorage.SetDirectly(this._layername + "_" + tileIndex, undefined)
return undefined
}
const data = await IdbLocalStorage.GetDirectly(this._layername + "_" + tileIndex)
return <any>data
}
invalidate(zoomlevel: number, tileIndex) {
this.getTileSource(tileIndex).setData(undefined)
}
}