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node-spearhead/lib/do_snapshot/do_create.js

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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 2016 Joyent, Inc.
*
* `triton snapshot create ...`
*/
var assert = require('assert-plus');
var format = require('util').format;
var vasync = require('vasync');
var common = require('../common');
var distractions = require('../distractions');
var errors = require('../errors');
function do_create(subcmd, opts, args, cb) {
assert.optionalString(opts.name, 'opts.name');
assert.func(cb, 'cb');
if (opts.help) {
this.do_help('help', {}, [subcmd], cb);
return;
}
if (args.length === 0) {
cb(new errors.UsageError('missing INST argument'));
return;
} else if (args.length > 1) {
cb(new errors.UsageError('incorrect number of arguments'));
return;
}
var inst = args[0];
var cli = this.top;
var createOpts = {
userId: opts.userId,
id: inst
};
if (opts.name) {
createOpts.name = opts.name;
}
vasync.pipeline({arg: {}, funcs: [
function createSnapshot(ctx, next) {
ctx.start = Date.now();
cli.tritonapi.cloudapi.createMachineSnapshot(createOpts,
function (err, snapshot) {
if (err) {
next(err);
return;
}
console.log('Creating snapshot %s', snapshot.name);
ctx.name = snapshot.name;
next();
});
},
function maybeWait(ctx, next) {
if (!opts.wait) {
return next();
}
// 1 'wait': no distraction.
// >1 'wait': distraction, pass in the N.
var distraction;
if (process.stderr.isTTY && opts.wait.length > 1) {
distraction = distractions.createDistraction(opts.wait.length);
}
var cloudapi = cli.tritonapi.cloudapi;
var waiter = cloudapi.waitForSnapshotStates.bind(cloudapi);
waiter({
id: inst,
name: ctx.name,
states: ['created', 'failed']
}, function (err, snap) {
if (distraction) {
distraction.destroy();
}
if (err) {
return next(err);
}
if (opts.json) {
console.log(JSON.stringify(snap));
} else if (snap.state === 'created') {
var duration = Date.now() - ctx.start;
console.log('Created snapshot "%s" in %s', snap.name,
common.humanDurationFromMs(duration));
next();
} else {
next(new Error(format('Failed to create snapshot "%s"',
snap.name)));
}
});
}
]}, cb);
}
do_create.options = [
{
names: ['help', 'h'],
type: 'bool',
help: 'Show this help.'
},
{
names: ['json', 'j'],
type: 'bool',
help: 'JSON stream output.'
},
{
names: ['name', 'n'],
type: 'string',
helpArg: 'SNAPSHOT-NAME',
help: 'An optional name for a snapshot.'
},
{
names: ['wait', 'w'],
type: 'arrayOfBool',
help: 'Wait for the creation to complete. Use multiple times for a ' +
'spinner.'
}
];
do_create.help = [
'Create a snapshot of a machine.',
'',
'Usage:',
' {{name}} create [<options>] INST',
'',
'{{options}}',
'Snapshot do not work for instances of type "kvm".'
].join('\n');
module.exports = do_create;