mirror of
https://github.com/weaveworks/scope.git
synced 2026-03-03 18:20:27 +00:00
332 lines
9.5 KiB
JavaScript
332 lines
9.5 KiB
JavaScript
import debug from 'debug';
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import reqwest from 'reqwest';
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import trimStart from 'lodash/trimStart';
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import { blurSearch, clearControlError, closeWebsocket, openWebsocket, receiveError,
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receiveApiDetails, receiveNodesDelta, receiveNodeDetails, receiveControlError,
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receiveControlNodeRemoved, receiveControlPipe, receiveControlPipeStatus,
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receiveControlSuccess, receiveTopologies, receiveNotFound,
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receiveNodesForTopology } from '../actions/app-actions';
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import { API_INTERVAL, TOPOLOGY_INTERVAL } from '../constants/timer';
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const log = debug('scope:web-api-utils');
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const reconnectTimerInterval = 5000;
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const updateFrequency = '5s';
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const FIRST_RENDER_TOO_LONG_THRESHOLD = 100; // ms
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let socket;
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let reconnectTimer = 0;
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let currentUrl = null;
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let currentOptions = null;
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let topologyTimer = 0;
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let apiDetailsTimer = 0;
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let controlErrorTimer = 0;
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let createWebsocketAt = 0;
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let firstMessageOnWebsocketAt = 0;
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export function buildOptionsQuery(options) {
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if (options) {
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return options.map((value, param) => `${param}=${value}`).join('&');
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}
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return '';
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}
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export function basePath(urlPath) {
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//
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// "/scope/terminal.html" -> "/scope"
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// "/scope/" -> "/scope"
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// "/scope" -> "/scope"
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// "/" -> ""
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//
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const parts = urlPath.split('/');
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// if the last item has a "." in it, e.g. foo.html...
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if (parts[parts.length - 1].indexOf('.') !== -1) {
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return parts.slice(0, -1).join('/');
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}
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return parts.join('/').replace(/\/$/, '');
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}
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export function basePathSlash(urlPath) {
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//
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// "/scope/terminal.html" -> "/scope/"
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// "/scope/" -> "/scope/"
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// "/scope" -> "/scope/"
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// "/" -> "/"
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//
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return `${basePath(urlPath)}/`;
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}
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export function getApiPath(pathname = window.location.pathname) {
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if (process.env.SCOPE_API_PREFIX) {
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return basePath(`${process.env.SCOPE_API_PREFIX}${pathname}`);
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}
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return basePath(pathname);
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}
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export function getWebsocketUrl(host = window.location.host, pathname = window.location.pathname) {
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const wsProto = location.protocol === 'https:' ? 'wss' : 'ws';
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return `${wsProto}://${host}${process.env.SCOPE_API_PREFIX || ''}${basePath(pathname)}`;
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}
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function createWebsocket(topologyUrl, optionsQuery, dispatch) {
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if (socket) {
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socket.onclose = null;
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socket.onerror = null;
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socket.close();
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// onclose() is not called, but that's fine since we're opening a new one
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// right away
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}
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// profiling
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createWebsocketAt = new Date();
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firstMessageOnWebsocketAt = 0;
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socket = new WebSocket(`${getWebsocketUrl()}${topologyUrl}/ws?t=${updateFrequency}&${optionsQuery}`);
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socket.onopen = () => {
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dispatch(openWebsocket());
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};
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socket.onclose = () => {
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clearTimeout(reconnectTimer);
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log(`Closing websocket to ${topologyUrl}`, socket.readyState);
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socket = null;
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dispatch(closeWebsocket());
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reconnectTimer = setTimeout(() => {
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createWebsocket(topologyUrl, optionsQuery, dispatch);
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}, reconnectTimerInterval);
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};
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socket.onerror = () => {
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log(`Error in websocket to ${topologyUrl}`);
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dispatch(receiveError(currentUrl));
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};
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socket.onmessage = (event) => {
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const msg = JSON.parse(event.data);
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dispatch(receiveNodesDelta(msg));
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// profiling (receiveNodesDelta triggers synchronous render)
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if (!firstMessageOnWebsocketAt) {
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firstMessageOnWebsocketAt = new Date();
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const timeToFirstMessage = firstMessageOnWebsocketAt - createWebsocketAt;
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if (timeToFirstMessage > FIRST_RENDER_TOO_LONG_THRESHOLD) {
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log('Time (ms) to first nodes render after websocket was created',
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firstMessageOnWebsocketAt - createWebsocketAt);
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}
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}
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};
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}
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/* keep URLs relative */
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/**
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* Gets nodes for all topologies (for search)
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*/
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export function getAllNodes(getState, dispatch) {
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const state = getState();
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const topologyOptions = state.get('topologyOptions');
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// fetch sequentially
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state.get('topologyUrlsById')
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.reduce((sequence, topologyUrl, topologyId) => sequence.then(() => {
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const optionsQuery = buildOptionsQuery(topologyOptions.get(topologyId));
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// Trim the leading slash from the url before requesting.
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// This ensures that scope will request from the correct route if embedded in an iframe.
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return fetch(`${trimStart(topologyUrl, '/')}?${optionsQuery}`);
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})
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.then(response => response.json())
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.then(json => dispatch(receiveNodesForTopology(json.nodes, topologyId))),
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Promise.resolve());
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}
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export function getTopologies(options, dispatch) {
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clearTimeout(topologyTimer);
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const optionsQuery = buildOptionsQuery(options);
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const url = `${getApiPath()}/api/topology?${optionsQuery}`;
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reqwest({
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url,
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type: 'json',
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success: (res) => {
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dispatch(receiveTopologies(res));
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topologyTimer = setTimeout(() => {
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getTopologies(options, dispatch);
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}, TOPOLOGY_INTERVAL);
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},
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error: (err) => {
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log(`Error in topology request: ${err.responseText}`);
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dispatch(receiveError(url));
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topologyTimer = setTimeout(() => {
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getTopologies(options, dispatch);
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}, TOPOLOGY_INTERVAL);
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}
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});
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}
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export function getNodesDelta(topologyUrl, options, dispatch, forceReload) {
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const optionsQuery = buildOptionsQuery(options);
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// only recreate websocket if url changed or if forced (weave cloud instance reload);
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const isNewUrl = topologyUrl && (topologyUrl !== currentUrl || currentOptions !== optionsQuery);
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if (forceReload || isNewUrl) {
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createWebsocket(topologyUrl, optionsQuery, dispatch);
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currentUrl = topologyUrl;
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currentOptions = optionsQuery;
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}
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}
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export function getNodeDetails(topologyUrlsById, currentTopologyId, options, nodeMap, dispatch) {
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// get details for all opened nodes
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const obj = nodeMap.last();
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if (obj && topologyUrlsById.has(obj.topologyId)) {
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const topologyUrl = topologyUrlsById.get(obj.topologyId);
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let urlComponents = [getApiPath(), topologyUrl, '/', encodeURIComponent(obj.id)];
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if (currentTopologyId === obj.topologyId) {
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// Only forward filters for nodes in the current topology
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const optionsQuery = buildOptionsQuery(options);
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urlComponents = urlComponents.concat(['?', optionsQuery]);
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}
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const url = urlComponents.join('');
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reqwest({
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url,
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type: 'json',
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success: (res) => {
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// make sure node is still selected
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if (nodeMap.has(res.node.id)) {
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dispatch(receiveNodeDetails(res.node));
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}
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},
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error: (err) => {
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log(`Error in node details request: ${err.responseText}`);
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// dont treat missing node as error
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if (err.status === 404) {
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dispatch(receiveNotFound(obj.id));
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} else {
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dispatch(receiveError(topologyUrl));
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}
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}
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});
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} else if (obj) {
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log('No details or url found for ', obj);
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}
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}
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export function getApiDetails(dispatch) {
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clearTimeout(apiDetailsTimer);
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const url = `${getApiPath()}/api`;
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reqwest({
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url,
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type: 'json',
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success: (res) => {
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dispatch(receiveApiDetails(res));
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apiDetailsTimer = setTimeout(() => {
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getApiDetails(dispatch);
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}, API_INTERVAL);
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},
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error: (err) => {
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log(`Error in api details request: ${err.responseText}`);
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receiveError(url);
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apiDetailsTimer = setTimeout(() => {
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getApiDetails(dispatch);
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}, API_INTERVAL / 2);
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}
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});
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}
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export function doControlRequest(nodeId, control, dispatch) {
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clearTimeout(controlErrorTimer);
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const url = `${getApiPath()}/api/control/${encodeURIComponent(control.probeId)}/`
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+ `${encodeURIComponent(control.nodeId)}/${control.id}`;
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reqwest({
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method: 'POST',
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url,
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type: 'json',
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success: (res) => {
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dispatch(receiveControlSuccess(nodeId));
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if (res) {
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if (res.pipe) {
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dispatch(blurSearch());
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const resizeTtyControl = res.resize_tty_control &&
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{id: res.resize_tty_control, probeId: control.probeId, nodeId: control.nodeId};
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dispatch(receiveControlPipe(
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res.pipe,
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nodeId,
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res.raw_tty,
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resizeTtyControl,
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control
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));
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}
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if (res.removedNode) {
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dispatch(receiveControlNodeRemoved(nodeId));
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}
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}
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},
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error: (err) => {
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dispatch(receiveControlError(nodeId, err.response));
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controlErrorTimer = setTimeout(() => {
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dispatch(clearControlError(nodeId));
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}, 10000);
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}
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});
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}
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export function doResizeTty(pipeId, control, cols, rows) {
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const url = `${getApiPath()}/api/control/${encodeURIComponent(control.probeId)}/`
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+ `${encodeURIComponent(control.nodeId)}/${control.id}`;
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return reqwest({
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method: 'POST',
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url,
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type: 'json',
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data: JSON.stringify({pipeID: pipeId, width: cols.toString(), height: rows.toString()}),
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})
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.fail((err) => {
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log(`Error resizing pipe: ${err}`);
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});
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}
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export function deletePipe(pipeId, dispatch) {
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const url = `${getApiPath()}/api/pipe/${encodeURIComponent(pipeId)}`;
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reqwest({
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method: 'DELETE',
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url,
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type: 'json',
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success: () => {
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log('Closed the pipe!');
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},
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error: (err) => {
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log(`Error closing pipe:${err}`);
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dispatch(receiveError(url));
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}
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});
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}
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export function getPipeStatus(pipeId, dispatch) {
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const url = `${getApiPath()}/api/pipe/${encodeURIComponent(pipeId)}/check`;
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reqwest({
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method: 'GET',
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url,
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type: 'json',
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complete: (res) => {
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const status = {
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204: 'PIPE_ALIVE',
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404: 'PIPE_DELETED'
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}[res.status];
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if (!status) {
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log('Unexpected pipe status:', res.status);
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return;
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}
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dispatch(receiveControlPipeStatus(pipeId, status));
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}
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});
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}
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