403 lines
12 KiB
JavaScript
403 lines
12 KiB
JavaScript
/*
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* Copyright (c) 2015, Joyent, Inc. All rights reserved.
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*
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* Core Triton client driver class.
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*/
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var p = console.log;
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var assert = require('assert-plus');
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var auth = require('smartdc-auth');
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var EventEmitter = require('events').EventEmitter;
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var fs = require('fs');
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var format = require('util').format;
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var once = require('once');
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var path = require('path');
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var restifyClients = require('restify-clients');
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var tabula = require('tabula');
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var vasync = require('vasync');
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var cloudapi = require('./cloudapi2');
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var common = require('./common');
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var errors = require('./errors');
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var loadConfigSync = require('./config').loadConfigSync;
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//---- Triton class
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/**
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* Create a Triton client.
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*
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* @param options {Object}
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* - log {Bunyan Logger}
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* - profileName {String} Optional. Name of profile to use. Defaults to
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* 'defaultProfile' in the config.
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* - envProfile {Object} Optional. A starter 'env' profile object. Missing
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* fields will be filled in from standard SDC_* envvars.
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* ...
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*/
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function Triton(options) {
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assert.object(options, 'options');
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assert.object(options.log, 'options.log');
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assert.optionalString(options.profileName, 'options.profileName');
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assert.optionalString(options.configPath, 'options.configPath');
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assert.optionalString(options.cacheDir, 'options.cacheDir');
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assert.optionalObject(options.envProfile, 'options.envProfile');
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// Make sure a given bunyan logger has reasonable client_re[qs] serializers.
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// Note: This was fixed in restify, then broken again in
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// https://github.com/mcavage/node-restify/pull/501
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if (options.log.serializers &&
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(!options.log.serializers.client_req ||
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!options.log.serializers.client_req)) {
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this.log = options.log.child({
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// XXX cheating. restify-clients should export its 'bunyan'.
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serializers: require('restify-clients/lib/helpers/bunyan').serializers
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});
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} else {
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this.log = options.log;
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}
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this.config = loadConfigSync({
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configPath: options.configPath,
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envProfile: options.envProfile
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});
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this.profiles = this.config.profiles;
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this.profile = this.getProfile(
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options.profileName || this.config.defaultProfile);
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this.log.trace({profile: this.profile}, 'profile data');
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this.cacheDir = options.cacheDir;
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this.cloudapi = this._cloudapiFromProfile(this.profile);
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}
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Triton.prototype.getProfile = function getProfile(name) {
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for (var i = 0; i < this.profiles.length; i++) {
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if (this.profiles[i].name === name) {
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return this.profiles[i];
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}
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}
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};
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Triton.prototype._cloudapiFromProfile = function _cloudapiFromProfile(profile) {
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assert.object(profile, 'profile');
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assert.string(profile.account, 'profile.account');
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assert.string(profile.keyId, 'profile.keyId');
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assert.string(profile.url, 'profile.url');
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assert.optionalString(profile.privKey, 'profile.privKey');
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assert.optionalBool(profile.insecure, 'profile.insecure');
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var rejectUnauthorized = (profile.insecure === undefined
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? true : !profile.insecure);
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var sign;
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if (profile.privKey) {
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sign = auth.privateKeySigner({
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user: profile.account,
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keyId: profile.keyId,
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key: profile.privKey
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});
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} else {
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sign = auth.cliSigner({
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keyId: profile.keyId,
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user: profile.account
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});
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}
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var client = cloudapi.createClient({
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url: profile.url,
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user: profile.account,
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version: '*',
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rejectUnauthorized: rejectUnauthorized,
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sign: sign,
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log: this.log
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});
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return client;
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};
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/**
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* cloudapi listImages wrapper with optional caching
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*/
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Triton.prototype.listImages = function listImages(opts, cb) {
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var self = this;
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if (cb === undefined) {
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cb = opts;
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opts = {};
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}
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assert.object(opts, 'opts');
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assert.optionalBool(opts.useCache, 'opts.useCache');
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assert.func(cb, 'cb');
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var cacheFile;
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if (self.cacheDir)
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cacheFile = path.join(self.cacheDir, 'images.json');
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if (opts.useCache && !cacheFile) {
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cb(new Error('opts.useCache set but no cacheDir found'));
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return;
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}
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// try to read the cache if the user wants it
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// if this fails for any reason we fallback to hitting the cloudapi
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if (opts.useCache) {
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fs.readFile(cacheFile, 'utf8', function (err, out) {
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if (err) {
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self.log.info({err: err}, 'failed to read cache file %s', cacheFile);
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fetch();
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return;
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}
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var data;
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try {
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data = JSON.parse(out);
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} catch (e) {
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self.log.info({err: e}, 'failed to parse cache file %s', cacheFile);
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fetch();
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return;
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}
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cb(null, data, {});
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});
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return;
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}
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fetch();
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function fetch() {
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self.cloudapi.listImages(opts, function (err, imgs, res) {
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if (!err && self.cacheDir) {
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// cache the results
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var data = JSON.stringify(imgs);
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fs.writeFile(cacheFile, data, {encoding: 'utf8'}, function (err) {
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if (err)
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self.log.info({err: err}, 'error caching images results');
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done();
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});
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} else {
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done();
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}
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function done() {
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cb(err, imgs, res);
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}
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});
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}
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};
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/**
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* Get an image by ID, exact name, or short ID, in that order.
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*
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* If there is more than one image with that name, then the latest
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* (by published_at) is returned.
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*/
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Triton.prototype.getImage = function getImage(name, cb) {
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assert.string(name, 'name');
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assert.func(cb, 'cb');
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if (common.UUID_RE.test(name)) {
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this.cloudapi.getImage({id: name}, function (err, img) {
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if (err) {
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cb(err);
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} else if (img.state !== 'active') {
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cb(new Error(format('image %s is not active', name)));
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} else {
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cb(null, img);
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}
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});
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} else {
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this.cloudapi.listImages(function (err, imgs) {
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if (err) {
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return cb(err);
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}
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var nameMatches = [];
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var shortIdMatches = [];
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for (var i = 0; i < imgs.length; i++) {
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var img = imgs[i];
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if (img.name === name) {
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nameMatches.push(img);
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}
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if (img.id.slice(0, 8) === name) {
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shortIdMatches.push(img);
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}
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}
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if (nameMatches.length === 1) {
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cb(null, nameMatches[0]);
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} else if (nameMatches.length > 1) {
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tabula.sortArrayOfObjects(nameMatches, 'published_at');
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cb(null, nameMatches[nameMatches.length - 1]);
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} else if (shortIdMatches.length === 1) {
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cb(null, shortIdMatches[0]);
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} else if (shortIdMatches.length === 0) {
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cb(new Error(format(
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'no image with name or shortId "%s" was found', name)));
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} else {
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cb(new Error(format('no image with name "%s" was found '
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+ 'and "%s" is an ambiguous shortId', name)));
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}
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});
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}
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};
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/**
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* Get an active package by ID, exact name, or short ID, in that order.
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*
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* If there is more than one package with that name, then this errors out.
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*/
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Triton.prototype.getPackage = function getPackage(name, cb) {
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assert.string(name, 'name');
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assert.func(cb, 'cb');
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if (common.UUID_RE.test(name)) {
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this.cloudapi.getPackage({id: name}, function (err, pkg) {
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if (err) {
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cb(err);
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} else if (!pkg.active) {
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cb(new Error(format('image %s is not active', name)));
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} else {
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cb(null, pkg);
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}
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});
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} else {
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this.cloudapi.listPackages(function (err, pkgs) {
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if (err) {
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return cb(err);
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}
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var nameMatches = [];
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var shortIdMatches = [];
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for (var i = 0; i < pkgs.length; i++) {
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var pkg = pkgs[i];
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if (pkg.name === name) {
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nameMatches.push(pkg);
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}
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if (pkg.id.slice(0, 8) === name) {
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shortIdMatches.push(pkg);
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}
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}
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if (nameMatches.length === 1) {
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cb(null, nameMatches[0]);
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} else if (nameMatches.length > 1) {
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cb(new Error(format(
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'package name "%s" is ambiguous: matches %d packages',
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name, nameMatches.length)));
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} else if (shortIdMatches.length === 1) {
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cb(null, shortIdMatches[0]);
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} else if (shortIdMatches.length === 0) {
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cb(new Error(format(
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'no package with name or shortId "%s" was found', name)));
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} else {
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cb(new Error(format('no package with name "%s" was found '
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+ 'and "%s" is an ambiguous shortId', name)));
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}
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});
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}
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};
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/**
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* Get an instance by ID, exact name, or short ID, in that order.
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*
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* @param {String} name
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* @param {Function} callback `function (err, inst)`
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*/
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Triton.prototype.getInstance = function getInstance(name, cb) {
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var self = this;
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assert.string(name, 'name');
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assert.func(cb, 'cb');
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var shortId;
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var inst;
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vasync.pipeline({funcs: [
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function tryUuid(_, next) {
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var uuid;
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if (common.isUUID(name)) {
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uuid = name;
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} else {
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shortId = common.normShortId(name);
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if (shortId && common.isUUID(shortId)) {
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// E.g. a >32-char docker container ID normalized to a UUID.
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uuid = shortId;
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} else {
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return next();
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}
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}
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self.cloudapi.getMachine(uuid, function (err, inst_) {
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inst = inst_;
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next(err);
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});
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},
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function tryName(_, next) {
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if (inst) {
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return next();
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}
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self.cloudapi.listMachines({name: name}, function (err, insts) {
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if (err) {
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return next(err);
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}
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for (var i = 0; i < insts.length; i++) {
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if (insts[i].name === name) {
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inst = insts[i];
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// Relying on rule that instance name is unique
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// for a user and DC.
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return next();
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}
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}
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next();
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});
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},
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function tryShortId(_, next) {
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if (inst || !shortId) {
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return next();
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}
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var nextOnce = once(next);
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var match;
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var s = self.cloudapi.createListMachinesStream();
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s.on('error', function (err) {
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nextOnce(err);
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});
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s.on('readable', function () {
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var inst;
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while ((inst = s.read()) !== null) {
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if (inst.id.slice(0, shortId.length) === shortId) {
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if (match) {
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return nextOnce(new Error(
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'instance short id "%s" is ambiguous',
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shortId));
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} else {
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match = inst;
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}
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}
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}
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});
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s.on('end', function () {
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if (match) {
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inst = match;
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}
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nextOnce();
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});
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}
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]}, function (err) {
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if (err) {
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cb(err);
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} else if (inst) {
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cb(null, inst);
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} else {
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cb(new Error(format(
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'no instance with name or shortId "%s" was found', name)));
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}
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});
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};
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//---- exports
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module.exports = Triton;
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