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79 lines
2.7 KiB
TypeScript
79 lines
2.7 KiB
TypeScript
/**
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* Makes a post to a node to receive the timestamp info. If non-existant, returns -1
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* @param snode Snode to send request to
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* @returns timestamp of the response from snode
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*/
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import { isNumber } from 'lodash';
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import { Snode } from '../../../data/types';
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import { NetworkTimeSubRequest } from './SnodeRequestTypes';
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import { doSnodeBatchRequest } from './batchRequest';
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function getNetworkTimeSubRequests(): Array<NetworkTimeSubRequest> {
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const request: NetworkTimeSubRequest = { method: 'info', params: {} };
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return [request];
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}
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const getNetworkTime = async (snode: Snode): Promise<string | number> => {
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const subRequests = getNetworkTimeSubRequests();
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const result = await doSnodeBatchRequest(subRequests, snode, 4000, null);
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if (!result || !result.length) {
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window?.log?.warn(`getNetworkTime on ${snode.ip}:${snode.port} returned falsish value`, result);
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throw new Error('getNetworkTime: Invalid result');
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}
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const firstResult = result[0];
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if (firstResult.code !== 200) {
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window?.log?.warn('Status is not 200 for getNetworkTime but: ', firstResult.code);
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throw new Error('getNetworkTime: Invalid status code');
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}
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const timestamp = firstResult?.body?.timestamp;
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if (!timestamp) {
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throw new Error(`getNetworkTime returned invalid timestamp: ${timestamp}`);
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}
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GetNetworkTime.handleTimestampOffsetFromNetwork('getNetworkTime', timestamp);
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return timestamp;
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};
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let latestTimestampOffset = Number.MAX_SAFE_INTEGER;
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function handleTimestampOffsetFromNetwork(_request: string, snodeTimestamp: number) {
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if (snodeTimestamp && isNumber(snodeTimestamp) && snodeTimestamp > 1609419600 * 1000) {
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// first january 2021. Arbitrary, just want to make sure the return timestamp is somehow valid and not some crazy low value
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const now = Date.now();
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if (latestTimestampOffset === Number.MAX_SAFE_INTEGER) {
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window?.log?.info(`first timestamp offset received: ${now - snodeTimestamp}ms`);
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}
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latestTimestampOffset = now - snodeTimestamp;
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}
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}
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/**
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* This function has no use to be called except during tests.
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* @returns the current offset we have with the rest of the network.
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*/
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function getLatestTimestampOffset() {
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if (latestTimestampOffset === Number.MAX_SAFE_INTEGER) {
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window.log.debug('latestTimestampOffset is not set yet');
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return 0;
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}
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// window.log.info('latestTimestampOffset is ', latestTimestampOffset);
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return latestTimestampOffset;
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}
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function getNowWithNetworkOffset() {
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// make sure to call exports here, as we stub the exported one for testing.
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return Date.now() - GetNetworkTime.getLatestTimestampOffset();
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}
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export const GetNetworkTime = {
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getNetworkTime,
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handleTimestampOffsetFromNetwork,
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getLatestTimestampOffset,
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getNowWithNetworkOffset,
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};
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