@valueflows/vf-graphql-holochain/src/store.js

GraphQL schema bindings for the Holochain implementation of ValueFlows

import { signalObject } from 'signal-utils/object';
const allowCaching = true;
// reactive entry lookup for hashes
export const entryLookup = signalObject({});
// function to return entry if it exists in the store
export function getEntryFromStore(hash) {
    return entryLookup[hash] ?? null;
}
// function to add entry to the store
export function addEntryToStore(hash, entry) {
    if (!allowCaching) {
        return;
    }
    entryLookup[hash] = entry;
}
// function to remove entry from the store
export function removeEntryFromStore(hash) {
    if (!allowCaching) {
        return;
    }
    if (entryLookup[hash]) {
        delete entryLookup[hash];
    }
}
// reactive map for recently fetched revision IDs
export const recentlyFetchedRevisionIds = signalObject({});
// function to get original id from the store
export function getLatestRevisionId(hash, passedSeconds) {
    const item = recentlyFetchedRevisionIds[hash];
    if (item && item.timestamp + passedSeconds * 1000 > Date.now()) {
        return item.revisionId;
    }
    else {
        return null;
    }
}
// get time of last update
export function getLastUpdateTime(hash) {
    const item = recentlyFetchedRevisionIds[hash];
    if (item) {
        return item.timestamp;
    }
    else {
        return null;
    }
}
// function to add/update original id
export function updateLatestRevision(originalId, revisionId) {
    if (!allowCaching) {
        return;
    }
    recentlyFetchedRevisionIds[originalId] = {
        revisionId,
        timestamp: Date.now()
    };
}
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