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759 lines
25 KiB
JavaScript
759 lines
25 KiB
JavaScript
'use strict';
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// @ts-check
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// ==================================================================================
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// docker.js
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// ----------------------------------------------------------------------------------
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// Description: System Information - library
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// for Node.js
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// Copyright: (c) 2014 - 2024
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// Author: Sebastian Hildebrandt
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// ----------------------------------------------------------------------------------
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// License: MIT
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// ==================================================================================
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// 13. Docker
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// ----------------------------------------------------------------------------------
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const util = require('./util');
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const DockerSocket = require('./dockerSocket');
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let _platform = process.platform;
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const _windows = (_platform === 'win32');
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let _docker_container_stats = {};
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let _docker_socket;
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let _docker_last_read = 0;
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// --------------------------
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// get containers (parameter all: get also inactive/exited containers)
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function dockerInfo(callback) {
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return new Promise((resolve) => {
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process.nextTick(() => {
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if (!_docker_socket) {
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_docker_socket = new DockerSocket();
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}
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const result = {};
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_docker_socket.getInfo((data) => {
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result.id = data.ID;
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result.containers = data.Containers;
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result.containersRunning = data.ContainersRunning;
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result.containersPaused = data.ContainersPaused;
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result.containersStopped = data.ContainersStopped;
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result.images = data.Images;
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result.driver = data.Driver;
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result.memoryLimit = data.MemoryLimit;
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result.swapLimit = data.SwapLimit;
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result.kernelMemory = data.KernelMemory;
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result.cpuCfsPeriod = data.CpuCfsPeriod;
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result.cpuCfsQuota = data.CpuCfsQuota;
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result.cpuShares = data.CPUShares;
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result.cpuSet = data.CPUSet;
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result.ipv4Forwarding = data.IPv4Forwarding;
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result.bridgeNfIptables = data.BridgeNfIptables;
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result.bridgeNfIp6tables = data.BridgeNfIp6tables;
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result.debug = data.Debug;
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result.nfd = data.NFd;
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result.oomKillDisable = data.OomKillDisable;
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result.ngoroutines = data.NGoroutines;
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result.systemTime = data.SystemTime;
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result.loggingDriver = data.LoggingDriver;
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result.cgroupDriver = data.CgroupDriver;
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result.nEventsListener = data.NEventsListener;
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result.kernelVersion = data.KernelVersion;
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result.operatingSystem = data.OperatingSystem;
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result.osType = data.OSType;
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result.architecture = data.Architecture;
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result.ncpu = data.NCPU;
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result.memTotal = data.MemTotal;
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result.dockerRootDir = data.DockerRootDir;
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result.httpProxy = data.HttpProxy;
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result.httpsProxy = data.HttpsProxy;
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result.noProxy = data.NoProxy;
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result.name = data.Name;
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result.labels = data.Labels;
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result.experimentalBuild = data.ExperimentalBuild;
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result.serverVersion = data.ServerVersion;
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result.clusterStore = data.ClusterStore;
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result.clusterAdvertise = data.ClusterAdvertise;
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result.defaultRuntime = data.DefaultRuntime;
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result.liveRestoreEnabled = data.LiveRestoreEnabled;
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result.isolation = data.Isolation;
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result.initBinary = data.InitBinary;
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result.productLicense = data.ProductLicense;
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if (callback) { callback(result); }
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resolve(result);
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});
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});
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});
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}
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exports.dockerInfo = dockerInfo;
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function dockerImages(all, callback) {
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// fallback - if only callback is given
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if (util.isFunction(all) && !callback) {
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callback = all;
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all = false;
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}
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if (typeof all === 'string' && all === 'true') {
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all = true;
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}
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if (typeof all !== 'boolean' && all !== undefined) {
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all = false;
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}
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all = all || false;
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let result = [];
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return new Promise((resolve) => {
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process.nextTick(() => {
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if (!_docker_socket) {
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_docker_socket = new DockerSocket();
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}
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const workload = [];
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_docker_socket.listImages(all, data => {
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let dockerImages = {};
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try {
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dockerImages = data;
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if (dockerImages && Object.prototype.toString.call(dockerImages) === '[object Array]' && dockerImages.length > 0) {
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dockerImages.forEach(function (element) {
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if (element.Names && Object.prototype.toString.call(element.Names) === '[object Array]' && element.Names.length > 0) {
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element.Name = element.Names[0].replace(/^\/|\/$/g, '');
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}
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workload.push(dockerImagesInspect(element.Id.trim(), element));
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});
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if (workload.length) {
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Promise.all(
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workload
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).then((data) => {
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if (callback) { callback(data); }
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resolve(data);
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});
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} else {
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if (callback) { callback(result); }
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resolve(result);
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}
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} else {
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if (callback) { callback(result); }
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resolve(result);
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}
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} catch (err) {
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if (callback) { callback(result); }
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resolve(result);
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}
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});
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});
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});
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}
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// --------------------------
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// container inspect (for one container)
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function dockerImagesInspect(imageID, payload) {
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return new Promise((resolve) => {
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process.nextTick(() => {
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imageID = imageID || '';
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if (typeof imageID !== 'string') {
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return resolve();
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}
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const imageIDSanitized = (util.isPrototypePolluted() ? '' : util.sanitizeShellString(imageID, true)).trim();
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if (imageIDSanitized) {
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if (!_docker_socket) {
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_docker_socket = new DockerSocket();
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}
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_docker_socket.inspectImage(imageIDSanitized.trim(), data => {
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try {
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resolve({
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id: payload.Id,
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container: data.Container,
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comment: data.Comment,
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os: data.Os,
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architecture: data.Architecture,
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parent: data.Parent,
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dockerVersion: data.DockerVersion,
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size: data.Size,
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sharedSize: payload.SharedSize,
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virtualSize: data.VirtualSize,
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author: data.Author,
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created: data.Created ? Math.round(new Date(data.Created).getTime() / 1000) : 0,
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containerConfig: data.ContainerConfig ? data.ContainerConfig : {},
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graphDriver: data.GraphDriver ? data.GraphDriver : {},
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repoDigests: data.RepoDigests ? data.RepoDigests : {},
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repoTags: data.RepoTags ? data.RepoTags : {},
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config: data.Config ? data.Config : {},
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rootFS: data.RootFS ? data.RootFS : {},
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});
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} catch (err) {
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resolve();
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}
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});
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} else {
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resolve();
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}
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});
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});
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}
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exports.dockerImages = dockerImages;
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function dockerContainers(all, callback) {
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function inContainers(containers, id) {
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let filtered = containers.filter(obj => {
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/**
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* @namespace
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* @property {string} Id
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*/
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return (obj.Id && (obj.Id === id));
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});
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return (filtered.length > 0);
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}
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// fallback - if only callback is given
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if (util.isFunction(all) && !callback) {
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callback = all;
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all = false;
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}
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if (typeof all === 'string' && all === 'true') {
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all = true;
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}
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if (typeof all !== 'boolean' && all !== undefined) {
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all = false;
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}
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all = all || false;
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let result = [];
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return new Promise((resolve) => {
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process.nextTick(() => {
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if (!_docker_socket) {
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_docker_socket = new DockerSocket();
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}
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const workload = [];
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_docker_socket.listContainers(all, data => {
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let docker_containers = {};
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try {
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docker_containers = data;
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if (docker_containers && Object.prototype.toString.call(docker_containers) === '[object Array]' && docker_containers.length > 0) {
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// GC in _docker_container_stats
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for (let key in _docker_container_stats) {
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if ({}.hasOwnProperty.call(_docker_container_stats, key)) {
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if (!inContainers(docker_containers, key)) { delete _docker_container_stats[key]; }
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}
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}
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docker_containers.forEach(function (element) {
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if (element.Names && Object.prototype.toString.call(element.Names) === '[object Array]' && element.Names.length > 0) {
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element.Name = element.Names[0].replace(/^\/|\/$/g, '');
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}
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workload.push(dockerContainerInspect(element.Id.trim(), element));
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});
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if (workload.length) {
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Promise.all(
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workload
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).then((data) => {
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if (callback) { callback(data); }
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resolve(data);
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});
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} else {
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if (callback) { callback(result); }
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resolve(result);
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}
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} else {
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if (callback) { callback(result); }
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resolve(result);
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}
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} catch (err) {
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// GC in _docker_container_stats
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for (let key in _docker_container_stats) {
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if ({}.hasOwnProperty.call(_docker_container_stats, key)) {
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if (!inContainers(docker_containers, key)) { delete _docker_container_stats[key]; }
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}
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}
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if (callback) { callback(result); }
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resolve(result);
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}
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});
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});
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});
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}
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// --------------------------
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// container inspect (for one container)
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function dockerContainerInspect(containerID, payload) {
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return new Promise((resolve) => {
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process.nextTick(() => {
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containerID = containerID || '';
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if (typeof containerID !== 'string') {
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return resolve();
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}
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const containerIdSanitized = (util.isPrototypePolluted() ? '' : util.sanitizeShellString(containerID, true)).trim();
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if (containerIdSanitized) {
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if (!_docker_socket) {
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_docker_socket = new DockerSocket();
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}
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_docker_socket.getInspect(containerIdSanitized.trim(), data => {
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try {
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resolve({
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id: payload.Id,
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name: payload.Name,
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image: payload.Image,
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imageID: payload.ImageID,
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command: payload.Command,
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created: payload.Created,
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started: data.State && data.State.StartedAt ? Math.round(new Date(data.State.StartedAt).getTime() / 1000) : 0,
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finished: data.State && data.State.FinishedAt && !data.State.FinishedAt.startsWith('0001-01-01') ? Math.round(new Date(data.State.FinishedAt).getTime() / 1000) : 0,
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createdAt: data.Created ? data.Created : '',
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startedAt: data.State && data.State.StartedAt ? data.State.StartedAt : '',
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finishedAt: data.State && data.State.FinishedAt && !data.State.FinishedAt.startsWith('0001-01-01') ? data.State.FinishedAt : '',
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state: payload.State,
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restartCount: data.RestartCount || 0,
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platform: data.Platform || '',
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driver: data.Driver || '',
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ports: payload.Ports,
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mounts: payload.Mounts,
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// hostconfig: payload.HostConfig,
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// network: payload.NetworkSettings
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});
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} catch (err) {
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resolve();
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}
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});
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} else {
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resolve();
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}
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});
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});
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}
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exports.dockerContainers = dockerContainers;
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// --------------------------
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// helper functions for calculation of docker stats
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function docker_calcCPUPercent(cpu_stats, precpu_stats) {
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/**
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* @namespace
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* @property {object} cpu_usage
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* @property {number} cpu_usage.total_usage
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* @property {number} system_cpu_usage
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* @property {object} cpu_usage
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* @property {Array} cpu_usage.percpu_usage
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*/
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if (!_windows) {
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let cpuPercent = 0.0;
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// calculate the change for the cpu usage of the container in between readings
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let cpuDelta = cpu_stats.cpu_usage.total_usage - precpu_stats.cpu_usage.total_usage;
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// calculate the change for the entire system between readings
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let systemDelta = cpu_stats.system_cpu_usage - precpu_stats.system_cpu_usage;
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if (systemDelta > 0.0 && cpuDelta > 0.0) {
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// calculate the change for the cpu usage of the container in between readings
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if (precpu_stats.online_cpus) {
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cpuPercent = (cpuDelta / systemDelta) * precpu_stats.online_cpus * 100.0;
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}
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else {
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cpuPercent = (cpuDelta / systemDelta) * cpu_stats.cpu_usage.percpu_usage.length * 100.0;
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}
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}
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return cpuPercent;
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} else {
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let nanoSecNow = util.nanoSeconds();
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let cpuPercent = 0.0;
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if (_docker_last_read > 0) {
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let possIntervals = (nanoSecNow - _docker_last_read); // / 100 * os.cpus().length;
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let intervalsUsed = cpu_stats.cpu_usage.total_usage - precpu_stats.cpu_usage.total_usage;
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if (possIntervals > 0) {
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cpuPercent = 100.0 * intervalsUsed / possIntervals;
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}
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}
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_docker_last_read = nanoSecNow;
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return cpuPercent;
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}
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}
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function docker_calcNetworkIO(networks) {
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let rx;
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let wx;
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for (let key in networks) {
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// skip loop if the property is from prototype
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if (!{}.hasOwnProperty.call(networks, key)) { continue; }
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/**
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* @namespace
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* @property {number} rx_bytes
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* @property {number} tx_bytes
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*/
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let obj = networks[key];
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rx = +obj.rx_bytes;
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wx = +obj.tx_bytes;
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}
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return {
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rx,
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wx
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};
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}
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function docker_calcBlockIO(blkio_stats) {
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let result = {
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r: 0,
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w: 0
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};
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/**
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* @namespace
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* @property {Array} io_service_bytes_recursive
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*/
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if (blkio_stats && blkio_stats.io_service_bytes_recursive && Object.prototype.toString.call(blkio_stats.io_service_bytes_recursive) === '[object Array]' && blkio_stats.io_service_bytes_recursive.length > 0) {
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blkio_stats.io_service_bytes_recursive.forEach(function (element) {
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/**
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* @namespace
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* @property {string} op
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* @property {number} value
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*/
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if (element.op && element.op.toLowerCase() === 'read' && element.value) {
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result.r += element.value;
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}
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if (element.op && element.op.toLowerCase() === 'write' && element.value) {
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result.w += element.value;
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}
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});
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}
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return result;
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}
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function dockerContainerStats(containerIDs, callback) {
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let containerArray = [];
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return new Promise((resolve) => {
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process.nextTick(() => {
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// fallback - if only callback is given
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if (util.isFunction(containerIDs) && !callback) {
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callback = containerIDs;
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containerArray = ['*'];
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} else {
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containerIDs = containerIDs || '*';
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if (typeof containerIDs !== 'string') {
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if (callback) { callback([]); }
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return resolve([]);
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}
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let containerIDsSanitized = '';
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containerIDsSanitized.__proto__.toLowerCase = util.stringToLower;
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containerIDsSanitized.__proto__.replace = util.stringReplace;
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containerIDsSanitized.__proto__.trim = util.stringTrim;
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containerIDsSanitized = containerIDs;
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containerIDsSanitized = containerIDsSanitized.trim();
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if (containerIDsSanitized !== '*') {
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containerIDsSanitized = '';
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const s = (util.isPrototypePolluted() ? '' : util.sanitizeShellString(containerIDs, true)).trim();
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const l = util.mathMin(s.length, 2000);
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for (let i = 0; i <= l; i++) {
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if (s[i] !== undefined) {
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s[i].__proto__.toLowerCase = util.stringToLower;
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const sl = s[i].toLowerCase();
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if (sl && sl[0] && !sl[1]) {
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containerIDsSanitized = containerIDsSanitized + sl[0];
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}
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}
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}
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}
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containerIDsSanitized = containerIDsSanitized.trim().toLowerCase().replace(/,+/g, '|');
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containerArray = containerIDsSanitized.split('|');
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}
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const result = [];
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const workload = [];
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if (containerArray.length && containerArray[0].trim() === '*') {
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containerArray = [];
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dockerContainers().then(allContainers => {
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for (let container of allContainers) {
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containerArray.push(container.id.substring(0, 12));
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}
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if (containerArray.length) {
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dockerContainerStats(containerArray.join(',')).then(result => {
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if (callback) { callback(result); }
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resolve(result);
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});
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} else {
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if (callback) { callback(result); }
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resolve(result);
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}
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});
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} else {
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for (let containerID of containerArray) {
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workload.push(dockerContainerStatsSingle(containerID.trim()));
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}
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if (workload.length) {
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Promise.all(
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workload
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).then((data) => {
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if (callback) { callback(data); }
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resolve(data);
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});
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} else {
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if (callback) { callback(result); }
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resolve(result);
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}
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}
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});
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});
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}
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// --------------------------
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// container stats (for one container)
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function dockerContainerStatsSingle(containerID) {
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containerID = containerID || '';
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let result = {
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id: containerID,
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memUsage: 0,
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memLimit: 0,
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memPercent: 0,
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cpuPercent: 0,
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pids: 0,
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netIO: {
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rx: 0,
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wx: 0
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},
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blockIO: {
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r: 0,
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w: 0
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},
|
|
restartCount: 0,
|
|
cpuStats: {},
|
|
precpuStats: {},
|
|
memoryStats: {},
|
|
networks: {},
|
|
};
|
|
return new Promise((resolve) => {
|
|
process.nextTick(() => {
|
|
if (containerID) {
|
|
|
|
if (!_docker_socket) {
|
|
_docker_socket = new DockerSocket();
|
|
}
|
|
|
|
_docker_socket.getInspect(containerID, dataInspect => {
|
|
try {
|
|
_docker_socket.getStats(containerID, data => {
|
|
try {
|
|
let stats = data;
|
|
if (!stats.message) {
|
|
if (data.id) { result.id = data.id; }
|
|
result.memUsage = (stats.memory_stats && stats.memory_stats.usage ? stats.memory_stats.usage : 0);
|
|
result.memLimit = (stats.memory_stats && stats.memory_stats.limit ? stats.memory_stats.limit : 0);
|
|
result.memPercent = (stats.memory_stats && stats.memory_stats.usage && stats.memory_stats.limit ? stats.memory_stats.usage / stats.memory_stats.limit * 100.0 : 0);
|
|
result.cpuPercent = (stats.cpu_stats && stats.precpu_stats ? docker_calcCPUPercent(stats.cpu_stats, stats.precpu_stats) : 0);
|
|
result.pids = (stats.pids_stats && stats.pids_stats.current ? stats.pids_stats.current : 0);
|
|
result.restartCount = (dataInspect.RestartCount ? dataInspect.RestartCount : 0);
|
|
if (stats.networks) { result.netIO = docker_calcNetworkIO(stats.networks); }
|
|
if (stats.blkio_stats) { result.blockIO = docker_calcBlockIO(stats.blkio_stats); }
|
|
result.cpuStats = (stats.cpu_stats ? stats.cpu_stats : {});
|
|
result.precpuStats = (stats.precpu_stats ? stats.precpu_stats : {});
|
|
result.memoryStats = (stats.memory_stats ? stats.memory_stats : {});
|
|
result.networks = (stats.networks ? stats.networks : {});
|
|
}
|
|
} catch (err) {
|
|
util.noop();
|
|
}
|
|
// }
|
|
resolve(result);
|
|
});
|
|
} catch (err) {
|
|
util.noop();
|
|
}
|
|
});
|
|
} else {
|
|
resolve(result);
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
exports.dockerContainerStats = dockerContainerStats;
|
|
|
|
// --------------------------
|
|
// container processes (for one container)
|
|
|
|
function dockerContainerProcesses(containerID, callback) {
|
|
let result = [];
|
|
return new Promise((resolve) => {
|
|
process.nextTick(() => {
|
|
containerID = containerID || '';
|
|
if (typeof containerID !== 'string') {
|
|
return resolve(result);
|
|
}
|
|
const containerIdSanitized = (util.isPrototypePolluted() ? '' : util.sanitizeShellString(containerID, true)).trim();
|
|
|
|
if (containerIdSanitized) {
|
|
|
|
if (!_docker_socket) {
|
|
_docker_socket = new DockerSocket();
|
|
}
|
|
|
|
_docker_socket.getProcesses(containerIdSanitized, data => {
|
|
/**
|
|
* @namespace
|
|
* @property {Array} Titles
|
|
* @property {Array} Processes
|
|
**/
|
|
try {
|
|
if (data && data.Titles && data.Processes) {
|
|
let titles = data.Titles.map(function (value) {
|
|
return value.toUpperCase();
|
|
});
|
|
let pos_pid = titles.indexOf('PID');
|
|
let pos_ppid = titles.indexOf('PPID');
|
|
let pos_pgid = titles.indexOf('PGID');
|
|
let pos_vsz = titles.indexOf('VSZ');
|
|
let pos_time = titles.indexOf('TIME');
|
|
let pos_elapsed = titles.indexOf('ELAPSED');
|
|
let pos_ni = titles.indexOf('NI');
|
|
let pos_ruser = titles.indexOf('RUSER');
|
|
let pos_user = titles.indexOf('USER');
|
|
let pos_rgroup = titles.indexOf('RGROUP');
|
|
let pos_group = titles.indexOf('GROUP');
|
|
let pos_stat = titles.indexOf('STAT');
|
|
let pos_rss = titles.indexOf('RSS');
|
|
let pos_command = titles.indexOf('COMMAND');
|
|
|
|
data.Processes.forEach(process => {
|
|
result.push({
|
|
pidHost: (pos_pid >= 0 ? process[pos_pid] : ''),
|
|
ppid: (pos_ppid >= 0 ? process[pos_ppid] : ''),
|
|
pgid: (pos_pgid >= 0 ? process[pos_pgid] : ''),
|
|
user: (pos_user >= 0 ? process[pos_user] : ''),
|
|
ruser: (pos_ruser >= 0 ? process[pos_ruser] : ''),
|
|
group: (pos_group >= 0 ? process[pos_group] : ''),
|
|
rgroup: (pos_rgroup >= 0 ? process[pos_rgroup] : ''),
|
|
stat: (pos_stat >= 0 ? process[pos_stat] : ''),
|
|
time: (pos_time >= 0 ? process[pos_time] : ''),
|
|
elapsed: (pos_elapsed >= 0 ? process[pos_elapsed] : ''),
|
|
nice: (pos_ni >= 0 ? process[pos_ni] : ''),
|
|
rss: (pos_rss >= 0 ? process[pos_rss] : ''),
|
|
vsz: (pos_vsz >= 0 ? process[pos_vsz] : ''),
|
|
command: (pos_command >= 0 ? process[pos_command] : '')
|
|
});
|
|
});
|
|
}
|
|
} catch (err) {
|
|
util.noop();
|
|
}
|
|
if (callback) { callback(result); }
|
|
resolve(result);
|
|
});
|
|
} else {
|
|
if (callback) { callback(result); }
|
|
resolve(result);
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
exports.dockerContainerProcesses = dockerContainerProcesses;
|
|
|
|
function dockerVolumes(callback) {
|
|
|
|
let result = [];
|
|
return new Promise((resolve) => {
|
|
process.nextTick(() => {
|
|
if (!_docker_socket) {
|
|
_docker_socket = new DockerSocket();
|
|
}
|
|
_docker_socket.listVolumes((data) => {
|
|
let dockerVolumes = {};
|
|
try {
|
|
dockerVolumes = data;
|
|
if (dockerVolumes && dockerVolumes.Volumes && Object.prototype.toString.call(dockerVolumes.Volumes) === '[object Array]' && dockerVolumes.Volumes.length > 0) {
|
|
|
|
dockerVolumes.Volumes.forEach(function (element) {
|
|
|
|
result.push({
|
|
name: element.Name,
|
|
driver: element.Driver,
|
|
labels: element.Labels,
|
|
mountpoint: element.Mountpoint,
|
|
options: element.Options,
|
|
scope: element.Scope,
|
|
created: element.CreatedAt ? Math.round(new Date(element.CreatedAt).getTime() / 1000) : 0,
|
|
});
|
|
});
|
|
if (callback) { callback(result); }
|
|
resolve(result);
|
|
} else {
|
|
if (callback) { callback(result); }
|
|
resolve(result);
|
|
}
|
|
} catch (err) {
|
|
if (callback) { callback(result); }
|
|
resolve(result);
|
|
}
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
exports.dockerVolumes = dockerVolumes;
|
|
|
|
function dockerAll(callback) {
|
|
return new Promise((resolve) => {
|
|
process.nextTick(() => {
|
|
dockerContainers(true).then(result => {
|
|
if (result && Object.prototype.toString.call(result) === '[object Array]' && result.length > 0) {
|
|
let l = result.length;
|
|
result.forEach(function (element) {
|
|
dockerContainerStats(element.id).then((res) => {
|
|
// include stats in array
|
|
element.memUsage = res[0].memUsage;
|
|
element.memLimit = res[0].memLimit;
|
|
element.memPercent = res[0].memPercent;
|
|
element.cpuPercent = res[0].cpuPercent;
|
|
element.pids = res[0].pids;
|
|
element.netIO = res[0].netIO;
|
|
element.blockIO = res[0].blockIO;
|
|
element.cpuStats = res[0].cpuStats;
|
|
element.precpuStats = res[0].precpuStats;
|
|
element.memoryStats = res[0].memoryStats;
|
|
element.networks = res[0].networks;
|
|
|
|
dockerContainerProcesses(element.id).then(processes => {
|
|
element.processes = processes;
|
|
|
|
l -= 1;
|
|
if (l === 0) {
|
|
if (callback) { callback(result); }
|
|
resolve(result);
|
|
}
|
|
});
|
|
// all done??
|
|
});
|
|
});
|
|
} else {
|
|
if (callback) { callback(result); }
|
|
resolve(result);
|
|
}
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
exports.dockerAll = dockerAll;
|