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node-spearhead/lib/tritonapi.js

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/*
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* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/*
* Copyright 2015 Joyent, Inc.
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*
* Core TritonApi client driver class.
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*/
var assert = require('assert-plus');
var auth = require('smartdc-auth');
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var EventEmitter = require('events').EventEmitter;
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var fs = require('fs');
var format = require('util').format;
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var mkdirp = require('mkdirp');
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var once = require('once');
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var path = require('path');
var restifyClients = require('restify-clients');
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// We are cheating here. restify-clients should export its 'bunyan'.
var restifyBunyanSerializers =
require('restify-clients/lib/helpers/bunyan').serializers;
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var tabula = require('tabula');
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;
// ---- globals
var CLOUDAPI_ACCEPT_VERSION = '~8||~7';
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// ---- internal support stuff
function _assertRoleTagResourceType(resourceType, errName) {
assert.string(resourceType, errName);
var knownResourceTypes = ['resource', 'instance', 'image',
'package', 'network'];
assert.ok(knownResourceTypes.indexOf(resourceType) !== -1,
'unknown resource type: ' + resourceType);
}
function _roleTagResourceUrl(account, type, id) {
var ns = {
instance: 'machines',
image: 'images',
'package': 'packages',
network: 'networks'
}[type];
assert.ok(ns, 'unknown resource type: ' + type);
return format('/%s/%s/%s', account, ns, id);
}
//---- TritonApi class
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/**
* Create a TritonApi client.
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*
* @param opts {Object}
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* - log {Bunyan Logger}
* ...
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*/
function TritonApi(opts) {
assert.object(opts, 'opts');
assert.object(opts.log, 'opts.log');
assert.object(opts.profile, 'opts.profile');
assert.object(opts.config, 'opts.config');
this.profile = opts.profile;
this.config = opts.config;
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// Make sure a given bunyan logger has reasonable client_re[qs] serializers.
// Note: This was fixed in restify, then broken again in
// https://github.com/mcavage/node-restify/pull/501
if (opts.log.serializers &&
(!opts.log.serializers.client_req ||
!opts.log.serializers.client_req)) {
this.log = opts.log.child({
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serializers: restifyBunyanSerializers
});
} else {
this.log = opts.log;
}
if (this.config.cacheDir) {
this.cacheDir = path.resolve(this.config._configDir,
this.config.cacheDir,
common.profileSlug(this.profile));
this.log.trace({cacheDir: this.cacheDir}, 'cache dir');
// TODO perhaps move this to an async .init()
if (!fs.existsSync(this.cacheDir)) {
try {
mkdirp.sync(this.cacheDir);
} catch (e) {
throw e;
}
}
}
this.cloudapi = this._cloudapiFromProfile(this.profile);
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}
TritonApi.prototype._cloudapiFromProfile =
function _cloudapiFromProfile(profile)
{
assert.object(profile, 'profile');
assert.string(profile.account, 'profile.account');
assert.optionalString(profile.actAsAccount, 'profile.actAsAccount');
assert.string(profile.keyId, 'profile.keyId');
assert.string(profile.url, 'profile.url');
assert.optionalString(profile.user, 'profile.user');
assert.optionalString(profile.privKey, 'profile.privKey');
assert.optionalBool(profile.insecure, 'profile.insecure');
assert.optionalString(profile.acceptVersion, 'profile.acceptVersion');
var rejectUnauthorized = (profile.insecure === undefined
? true : !profile.insecure);
var acceptVersion = profile.acceptVersion || CLOUDAPI_ACCEPT_VERSION;
var sign;
if (profile.privKey) {
sign = auth.privateKeySigner({
user: profile.account,
subuser: profile.user,
keyId: profile.keyId,
key: profile.privKey
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});
} else {
sign = auth.cliSigner({
keyId: profile.keyId,
user: profile.account,
subuser: profile.user
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});
}
var client = cloudapi.createClient({
url: profile.url,
account: profile.actAsAccount || profile.account,
user: profile.user,
version: acceptVersion,
rejectUnauthorized: rejectUnauthorized,
sign: sign,
log: this.log
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});
return client;
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};
TritonApi.prototype._cachePutJson = function _cachePutJson(key, obj, cb) {
var self = this;
assert.string(this.cacheDir, 'this.cacheDir');
assert.string(key, 'key');
assert.object(obj, 'obj');
assert.func(cb, 'cb');
var keyPath = path.resolve(this.cacheDir, key);
var data = JSON.stringify(obj);
fs.writeFile(keyPath, data, {encoding: 'utf8'}, function (err) {
if (err) {
self.log.info({err: err, keyPath: keyPath}, 'error caching');
}
cb();
});
};
TritonApi.prototype._cacheGetJson = function _cacheGetJson(key, cb) {
var self = this;
assert.string(this.cacheDir, 'this.cacheDir');
assert.string(key, 'key');
assert.func(cb, 'cb');
var keyPath = path.resolve(this.cacheDir, key);
fs.readFile(keyPath, 'utf8', function (err, data) {
if (err && err.code === 'ENOENT') {
self.log.trace({keyPath: keyPath},
'cache file does not exist');
return cb();
} else if (err) {
self.log.warn({err: err, keyPath: keyPath},
'error reading cache file');
return cb();
}
var obj;
try {
obj = JSON.parse(data);
} catch (dataErr) {
self.log.trace({err: dataErr, keyPath: keyPath},
'error parsing JSON cache file, removing');
fs.unlink(keyPath, function (err2) {
if (err2) {
self.log.warn({err: err2},
'failed to remove JSON cache file');
}
cb(err2);
});
return;
}
cb(null, obj);
});
};
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/**
* CloudAPI listImages wrapper with optional caching.
*
* @param opts {Object} Optional.
* - useCase {Boolean} Whether to use Triton's local cache.
* - ... all other cloudapi ListImages options
* @param {Function} callback `function (err, imgs)`
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*/
TritonApi.prototype.listImages = function listImages(opts, cb) {
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var self = this;
if (cb === undefined) {
cb = opts;
opts = {};
}
assert.object(opts, 'opts');
assert.optionalBool(opts.useCache, 'opts.useCache');
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assert.func(cb, 'cb');
var listOpts = common.objCopy(opts);
delete listOpts.useCache;
var cacheKey = 'images.json';
var cached;
var fetched;
var res;
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vasync.pipeline({funcs: [
function tryCache(_, next) {
if (!opts.useCache) {
return next();
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}
self._cacheGetJson(cacheKey, function (err, cached_) {
if (err) {
return next(err);
}
cached = cached_;
next();
});
},
function listImgs(_, next) {
if (cached) {
return next();
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}
self.cloudapi.listImages(listOpts, function (err, imgs, res_) {
if (err) {
return next(err);
}
fetched = imgs;
res = res_;
next();
});
},
function cacheFetched(_, next) {
if (!fetched) {
return next();
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}
self._cachePutJson(cacheKey, fetched, next);
}
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]}, function (err) {
if (err) {
cb(err, null, res);
} else {
cb(null, fetched || cached, res);
}
});
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};
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/**
* Get an image by ID, exact name, or short ID, in that order.
*
* If there is more than one image with that name, then the latest
* (by published_at) is returned.
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*/
TritonApi.prototype.getImage = function getImage(opts, cb) {
var self = this;
if (typeof (opts) === 'string')
opts = {name: opts};
assert.object(opts, 'opts');
assert.string(opts.name, 'opts.name');
assert.optionalBool(opts.useCache, 'opts.useCache');
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assert.func(cb, 'cb');
var img;
if (common.isUUID(opts.name)) {
vasync.pipeline({funcs: [
function tryCache(_, next) {
if (!opts.useCache) {
next();
return;
}
self._cacheGetJson('images.json', function (err, images) {
if (err) {
next(err);
return;
}
for (var i = 0; i < images.length; i++) {
if (images[i].id === opts.name) {
img = images[i];
break;
}
}
next();
});
},
function cloudApiGetImage(_, next) {
if (img !== undefined) {
next();
return;
}
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self.cloudapi.getImage({id: opts.name}, function (err, img_) {
img = img_;
if (err && err.restCode === 'ResourceNotFound') {
err = new errors.ResourceNotFoundError(err, format(
'image with id %s was not found', opts.name));
}
next(err);
});
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}
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]}, function done(err) {
if (err) {
cb(err);
} else if (img.state !== 'active') {
cb(new errors.TritonError(
format('image %s is not active', opts.name)));
} else {
cb(null, img);
}
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});
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} else {
var s = opts.name.split('@');
var name = s[0];
var version = s[1];
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var listOpts = {};
if (version) {
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listOpts.name = name;
listOpts.version = version;
listOpts.useCache = opts.useCache;
}
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this.cloudapi.listImages(listOpts, function (err, imgs) {
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if (err) {
return cb(err);
}
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var nameMatches = [];
var shortIdMatches = [];
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for (var i = 0; i < imgs.length; i++) {
img = imgs[i];
if (img.name === name) {
nameMatches.push(img);
}
if (common.uuidToShortId(img.id) === name) {
shortIdMatches.push(img);
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}
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}
if (nameMatches.length === 1) {
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cb(null, nameMatches[0]);
} else if (nameMatches.length > 1) {
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tabula.sortArrayOfObjects(nameMatches, 'published_at');
cb(null, nameMatches[nameMatches.length - 1]);
} else if (shortIdMatches.length === 1) {
cb(null, shortIdMatches[0]);
} else if (shortIdMatches.length === 0) {
cb(new errors.ResourceNotFoundError(format(
'no image with name or short id "%s" was found', name)));
} else {
cb(new errors.ResourceNotFoundError(
format('no image with name "%s" was found '
+ 'and "%s" is an ambiguous short id', name)));
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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.
*
* If there is more than one package with that name, then this errors out.
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*/
TritonApi.prototype.getPackage = function getPackage(name, cb) {
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assert.string(name, 'name');
assert.func(cb, 'cb');
if (common.isUUID(name)) {
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this.cloudapi.getPackage({id: name}, function (err, pkg) {
if (err) {
if (err.restCode === 'ResourceNotFound') {
err = new errors.ResourceNotFoundError(err,
format('package with id %s was not found', name));
}
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cb(err);
} else if (!pkg.active) {
cb(new errors.TritonError(
format('package %s is not active', name)));
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} else {
cb(null, pkg);
}
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});
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} else {
this.cloudapi.listPackages(function (err, pkgs) {
if (err) {
return cb(err);
}
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var nameMatches = [];
var shortIdMatches = [];
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for (var i = 0; i < pkgs.length; i++) {
var pkg = pkgs[i];
if (pkg.name === name) {
nameMatches.push(pkg);
}
if (pkg.id.slice(0, 8) === name) {
shortIdMatches.push(pkg);
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}
}
if (nameMatches.length === 1) {
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cb(null, nameMatches[0]);
} else if (nameMatches.length > 1) {
cb(new errors.TritonError(format(
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'package name "%s" is ambiguous: matches %d packages',
name, nameMatches.length)));
} else if (shortIdMatches.length === 1) {
cb(null, shortIdMatches[0]);
} else if (shortIdMatches.length === 0) {
cb(new errors.ResourceNotFoundError(format(
'no package with name or short id "%s" was found', name)));
} else {
cb(new errors.ResourceNotFoundError(
format('no package with name "%s" was found '
+ 'and "%s" is an ambiguous short id', name)));
}
});
}
};
/**
* Get an network by ID, exact name, or short ID, in that order.
*
* If the name is ambiguous, then this errors out.
*/
TritonApi.prototype.getNetwork = function getNetwork(name, cb) {
assert.string(name, 'name');
assert.func(cb, 'cb');
if (common.isUUID(name)) {
this.cloudapi.getNetwork(name, function (err, net) {
if (err) {
if (err.restCode === 'ResourceNotFound') {
// Wrap with *our* ResourceNotFound for exitStatus=3.
err = new errors.ResourceNotFoundError(err,
format('network with id %s was not found', name));
}
cb(err);
} else {
cb(null, net);
}
});
} else {
this.cloudapi.listNetworks(function (err, nets) {
if (err) {
return cb(err);
}
var nameMatches = [];
var shortIdMatches = [];
for (var i = 0; i < nets.length; i++) {
var net = nets[i];
if (net.name === name) {
nameMatches.push(net);
}
if (net.id.slice(0, 8) === name) {
shortIdMatches.push(net);
}
}
if (nameMatches.length === 1) {
cb(null, nameMatches[0]);
} else if (nameMatches.length > 1) {
cb(new errors.TritonError(format(
'network name "%s" is ambiguous: matches %d networks',
name, nameMatches.length)));
} else if (shortIdMatches.length === 1) {
cb(null, shortIdMatches[0]);
} else if (shortIdMatches.length === 0) {
cb(new errors.ResourceNotFoundError(format(
'no network with name or short id "%s" was found', name)));
} else {
cb(new errors.ResourceNotFoundError(format(
'no network with name "%s" was found '
+ 'and "%s" is an ambiguous short id', name)));
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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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*
* @param {String} name
* @param {Function} callback `function (err, inst, res)`
* Where, on success, `res` is the response object from a `GetMachine` call
* if one was made.
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*/
TritonApi.prototype.getInstance = function getInstance(name, cb) {
var self = this;
assert.string(name, 'name');
assert.func(cb, 'cb');
var res;
var shortId;
var inst;
vasync.pipeline({funcs: [
function tryUuid(_, next) {
var uuid;
if (common.isUUID(name)) {
uuid = name;
} else {
shortId = common.normShortId(name);
if (shortId && common.isUUID(shortId)) {
// E.g. a >32-char docker container ID normalized to a UUID.
uuid = shortId;
} else {
return next();
}
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}
self.cloudapi.getMachine(uuid, function (err, inst_, res_) {
res = res_;
inst = inst_;
if (err && err.restCode === 'ResourceNotFound') {
// The CloudApi 404 error message sucks: "VM not found".
err = new errors.ResourceNotFoundError(err,
format('instance with id %s was not found', name));
}
next(err);
});
},
function tryName(_, next) {
if (inst) {
return next();
}
self.cloudapi.listMachines({name: name}, function (err, insts) {
if (err) {
return next(err);
}
for (var i = 0; i < insts.length; i++) {
if (insts[i].name === name) {
inst = insts[i];
// Relying on rule that instance name is unique
// for a user and DC.
return next();
}
}
next();
});
},
function tryShortId(_, next) {
if (inst || !shortId) {
return next();
}
var nextOnce = once(next);
var match;
var s = self.cloudapi.createListMachinesStream();
s.on('error', function (err) {
nextOnce(err);
});
s.on('readable', function () {
var candidate;
while ((candidate = s.read()) !== null) {
if (candidate.id.slice(0, shortId.length) === shortId) {
if (match) {
return nextOnce(new errors.TritonError(
'instance short id "%s" is ambiguous',
shortId));
} else {
match = candidate;
}
}
}
});
s.on('end', function () {
if (match) {
inst = match;
}
nextOnce();
});
}
]}, function (err) {
if (err) {
cb(err);
} else if (inst) {
cb(null, inst, res);
} else {
cb(new errors.ResourceNotFoundError(format(
'no instance with name or short id "%s" was found', name)));
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}
});
};
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/**
* Get role tags for a resource.
*
* @param {Object} opts
* - resourceType {String} One of:
* resource (a raw RBAC resource URL)
* instance
* image
* package
* network
* - id {String} The resource identifier. E.g. for an instance this can be
* the ID (a UUID), login or short id. Whatever `triton` typically allows
* for identification.
* @param {Function} callback `function (err, roleTags, resource)`
*/
TritonApi.prototype.getRoleTags = function getRoleTags(opts, cb) {
var self = this;
assert.object(opts, 'opts');
_assertRoleTagResourceType(opts.resourceType, 'opts.resourceType');
assert.string(opts.id, 'opts.id');
assert.func(cb, 'cb');
function roleTagsFromRes(res) {
return (
(res.headers['role-tag'] || '')
/* JSSTYLED */
.split(/\s*,\s*/)
.filter(function (r) { return r.trim(); })
);
}
var roleTags;
var resource;
vasync.pipeline({arg: {}, funcs: [
function resolveResourceId(ctx, next) {
if (opts.resourceType === 'resource') {
next();
return;
}
var getFuncName = {
instance: 'getInstance',
image: 'getImage',
'package': 'getPackage',
network: 'getNetwork'
}[opts.resourceType];
self[getFuncName](opts.id, function (err, resource_, res) {
if (err) {
next(err);
return;
}
resource = resource_;
/*
* Sometimes `getInstance` et al return a CloudAPI `GetMachine`
* res on which there is a 'role-tag' header that we want.
*/
if (res) {
roleTags = roleTagsFromRes(res);
}
next();
});
},
function getResourceIfNecessary(ctx, next) {
if (roleTags) {
next();
return;
}
var resourceUrl = (opts.resourceType === 'resource'
? opts.id
: _roleTagResourceUrl(self.profile.account,
opts.resourceType, resource.id));
self.cloudapi.getRoleTags({resource: resourceUrl},
function (err, roleTags_, resource_) {
if (err) {
next(err);
return;
}
roleTags = roleTags_;
resource = resource_;
next();
});
}
]}, function (err) {
cb(err, roleTags, resource);
});
};
/**
* Set role tags for a resource.
*
* @param {Object} opts
* - resourceType {String} One of:
* resource (a raw RBAC resource URL)
* instance
* image
* package
* network
* - id {String} The resource identifier. E.g. for an instance this can be
* the ID (a UUID), login or short id. Whatever `triton` typically allows
* for identification.
* - roleTags {Array}
* @param {Function} callback `function (err)`
*/
TritonApi.prototype.setRoleTags = function setRoleTags(opts, cb) {
var self = this;
assert.object(opts, 'opts');
_assertRoleTagResourceType(opts.resourceType, 'opts.resourceType');
assert.string(opts.id, 'opts.id');
assert.arrayOfString(opts.roleTags, 'opts.roleTags');
assert.func(cb, 'cb');
vasync.pipeline({arg: {}, funcs: [
function resolveResourceId(ctx, next) {
if (opts.resourceType === 'resource') {
next();
return;
}
var getFuncName = {
instance: 'getInstance',
image: 'getImage',
'package': 'getPackage',
network: 'getNetwork'
}[opts.resourceType];
self[getFuncName](opts.id, function (err, resource, res) {
if (err) {
next(err);
return;
}
ctx.resource = resource;
next();
});
},
function setTheRoleTags(ctx, next) {
var resourceUrl = (opts.resourceType === 'resource'
? opts.id
: _roleTagResourceUrl(self.profile.account,
opts.resourceType, ctx.resource.id));
self.cloudapi.setRoleTags({
resource: resourceUrl,
roleTags: opts.roleTags
}, function (err) {
if (err) {
next(err);
return;
}
next();
});
}
]}, function (err) {
cb(err);
});
};
/**
* Get an RBAC user by ID or login.
*
* @param {Object} opts
* - id {UUID|String} The user ID (a UUID) or login.
* - roles {Boolean} Optional. Whether to includes roles of which this
* user is a member. Default false.
* - keys {Boolean} Optional. Set to `true` to also (with a separate
* request) retrieve the `keys` for this user. Default is false.
* @param {Function} callback of the form `function (err, user)`
*/
TritonApi.prototype.getUser = function getUser(opts, cb) {
var self = this;
assert.object(opts, 'opts');
assert.string(opts.id, 'opts.id');
assert.optionalBool(opts.roles, 'opts.roles');
assert.optionalBool(opts.keys, 'opts.keys');
assert.func(cb, 'cb');
var context = {};
vasync.pipeline({arg: context, funcs: [
function tryGetUser(ctx, next) {
var getOpts = {
id: opts.id,
membership: opts.roles
};
self.cloudapi.getUser(getOpts, function (err, user) {
if (err) {
if (err.restCode === 'ResourceNotFound') {
// TODO: feels like overkill to wrap this, ensure
// decent cloudapi error for this, then don't wrap.
next(new errors.ResourceNotFoundError(err,
format('user with login or id "%s" was not found',
opts.id)));
} else {
next(err);
}
} else {
ctx.user = user;
next();
}
});
},
function getKeys(ctx, next) {
if (!opts.keys) {
next();
return;
}
self.cloudapi.listUserKeys({userId: ctx.user.id},
function (err, keys) {
if (err) {
next(err);
return;
}
ctx.user.keys = keys;
next();
});
}
]}, function (err) {
cb(err, context.user);
});
};
/**
* Delete an RBAC role by ID or name.
*
* @param {Object} opts
* - id {UUID|String} The role id (a UUID) or name.
* @param {Function} callback of the form `function (err)`
*/
TritonApi.prototype.deleteRole = function deleteRole(opts, cb) {
var self = this;
assert.object(opts, 'opts');
assert.string(opts.id, 'opts.id');
assert.func(cb, 'cb');
/*
* CloudAPI DeleteRole only accepts a role id (UUID).
*/
var context = {};
vasync.pipeline({arg: context, funcs: [
function getId(ctx, next) {
if (common.isUUID(opts.id)) {
ctx.id = opts.id;
next();
return;
}
self.cloudapi.getRole({id: opts.id}, function (err, role) {
if (err) {
next(err);
return;
}
ctx.id = role.id;
next();
});
},
function deleteIt(ctx, next) {
self.cloudapi.deleteRole({id: ctx.id}, next);
}
]}, function (err) {
cb(err);
});
};
/**
* Delete an RBAC policy by ID or name.
*
* @param {Object} opts
* - id {UUID|String} The policy id (a UUID) or name.
* @param {Function} callback of the form `function (err)`
*/
TritonApi.prototype.deletePolicy = function deletePolicy(opts, cb) {
var self = this;
assert.object(opts, 'opts');
assert.string(opts.id, 'opts.id');
assert.func(cb, 'cb');
/*
* CloudAPI DeletePolicy only accepts a policy id (UUID).
*/
var context = {};
vasync.pipeline({arg: context, funcs: [
function getId(ctx, next) {
if (common.isUUID(opts.id)) {
ctx.id = opts.id;
next();
return;
}
self.cloudapi.getPolicy({id: opts.id}, function (err, policy) {
if (err) {
next(err);
return;
}
ctx.id = policy.id;
next();
});
},
function deleteIt(ctx, next) {
self.cloudapi.deletePolicy({id: ctx.id}, next);
}
]}, function (err) {
cb(err);
});
};
2014-02-07 23:21:24 +02:00
//---- exports
module.exports = {
CLOUDAPI_ACCEPT_VERSION: CLOUDAPI_ACCEPT_VERSION,
createClient: function createClient(opts) {
return new TritonApi(opts);
}
};