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structured reload trigger

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This commit is contained in:
Jan Prochazka
2022-12-25 15:35:56 +01:00
parent 1eea117062
commit 783f26b500
8 changed files with 73 additions and 64 deletions
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36
packages/web/src/utility/cache.ts
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@@ -1,5 +1,6 @@
import { apiOn } from './api';
import getAsArray from './getAsArray';
import stableStringify from 'json-stable-stringify';
const cachedByKey = {};
const cachedPromisesByKey = {};
@@ -15,10 +16,11 @@ function cacheGet(key) {
function addCacheKeyToReloadTrigger(cacheKey, reloadTrigger) {
for (const item of getAsArray(reloadTrigger)) {
if (!(item in cachedKeysByReloadTrigger)) {
cachedKeysByReloadTrigger[item] = [];
const itemString = stableStringify(item);
if (!(itemString in cachedKeysByReloadTrigger)) {
cachedKeysByReloadTrigger[itemString] = [];
}
cachedKeysByReloadTrigger[item].push(cacheKey);
cachedKeysByReloadTrigger[itemString].push(cacheKey);
}
}
@@ -32,7 +34,8 @@ function cacheSet(cacheKey, value, reloadTrigger, generation) {
function cacheClean(reloadTrigger) {
cacheGeneration += 1;
for (const item of getAsArray(reloadTrigger)) {
const keys = cachedKeysByReloadTrigger[item];
const itemString = stableStringify(item);
const keys = cachedKeysByReloadTrigger[itemString];
if (keys) {
for (const key of keys) {
delete cachedByKey[key];
@@ -40,7 +43,7 @@ function cacheClean(reloadTrigger) {
cacheGenerationByKey[key] = cacheGeneration;
}
}
delete cachedKeysByReloadTrigger[item];
delete cachedKeysByReloadTrigger[itemString];
}
}
@@ -87,20 +90,24 @@ export async function loadCachedValue(reloadTrigger, cacheKey, func) {
export async function subscribeCacheChange(reloadTrigger, cacheKey, reloadHandler) {
for (const item of getAsArray(reloadTrigger)) {
if (!subscriptionsByReloadTrigger[item]) {
subscriptionsByReloadTrigger[item] = [];
const itemString = stableStringify(item);
if (!subscriptionsByReloadTrigger[itemString]) {
subscriptionsByReloadTrigger[itemString] = [];
}
subscriptionsByReloadTrigger[item].push(reloadHandler);
subscriptionsByReloadTrigger[itemString].push(reloadHandler);
}
}
export async function unsubscribeCacheChange(reloadTrigger, cacheKey, reloadHandler) {
for (const item of getAsArray(reloadTrigger)) {
if (subscriptionsByReloadTrigger[item]) {
subscriptionsByReloadTrigger[item] = subscriptionsByReloadTrigger[item].filter(x => x != reloadHandler);
const itemString = stableStringify(item);
if (subscriptionsByReloadTrigger[itemString]) {
subscriptionsByReloadTrigger[itemString] = subscriptionsByReloadTrigger[itemString].filter(
x => x != reloadHandler
);
}
if (subscriptionsByReloadTrigger[item].length == 0) {
delete subscriptionsByReloadTrigger[item];
if (subscriptionsByReloadTrigger[itemString].length == 0) {
delete subscriptionsByReloadTrigger[itemString];
}
}
}
@@ -110,8 +117,9 @@ export function dispatchCacheChange(reloadTrigger) {
cacheClean(reloadTrigger);
for (const item of getAsArray(reloadTrigger)) {
if (subscriptionsByReloadTrigger[item]) {
for (const handler of subscriptionsByReloadTrigger[item]) {
const itemString = stableStringify(item);
if (subscriptionsByReloadTrigger[itemString]) {
for (const handler of subscriptionsByReloadTrigger[itemString]) {
handler();
}
}