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node-spearhead/lib/do_instance/do_wait.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 2016 Joyent, Inc.
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*
* `triton instance wait ...`
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*/
var vasync = require('vasync');
var distractions = require('../distractions');
var errors = require('../errors');
function do_wait(subcmd, opts, args, cb) {
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var self = this;
if (opts.help) {
return this.do_help('help', {}, [subcmd], cb);
} else if (args.length < 1) {
return cb(new errors.UsageError('missing INSTANCE arg(s)'));
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}
var ids = args;
var states = [];
opts.states.forEach(function (s) {
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/* JSSTYLED */
states = states.concat(s.trim().split(/\s*,\s*/g));
});
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var distraction;
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var done = 0;
var instFromId = {};
vasync.pipeline({funcs: [
function getInsts(_, next) {
vasync.forEachParallel({
inputs: ids,
func: function getInst(id, nextInst) {
self.top.tritonapi.getInstance(id, function (err, inst) {
if (err) {
return nextInst(err);
}
if (states.indexOf(inst.state) !== -1) {
console.log('%d/%d: Instance %s (%s) already %s',
++done, ids.length, inst.name, id, inst.state);
} else {
instFromId[inst.id] = inst;
}
nextInst();
});
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}
}, next);
},
function waitForInsts(_, next) {
var idsToWaitFor = Object.keys(instFromId);
if (idsToWaitFor.length === 0) {
return next();
}
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if (idsToWaitFor.length === 1) {
var inst2 = instFromId[idsToWaitFor[0]];
console.log(
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'Waiting for instance %s (%s) to enter state (states: %s)',
inst2.name, inst2.id, states.join(', '));
} else {
console.log(
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'Waiting for %d instances to enter state (states: %s)',
idsToWaitFor.length, states.join(', '));
}
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/*
* TODO: need BigSpinner.log first.
* TODO: Also when adding a spinner, we need an equiv option to
* `triton create -wwww` to trigger the spinner (and size). By
* default: no spinner.
*/
if (false &&
process.stderr.isTTY)
{
distraction = distractions.createDistraction();
}
vasync.forEachParallel({
inputs: idsToWaitFor,
func: function waitForInst(id, nextInst) {
self.top.tritonapi.cloudapi.waitForMachineStates({
id: id,
states: states
}, function (err, inst, res) {
if (err) {
return nextInst(err);
}
console.log('%d/%d: Instance %s (%s) moved to state %s',
++done, ids.length, inst.name, inst.id, inst.state);
nextInst();
});
}
}, next);
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}
]}, function (err) {
if (distraction) {
distraction.destroy();
}
cb(err);
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});
}
do_wait.help = [
'Wait on instances changing state.',
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'',
'Usage:',
' {{name}} wait [-s STATES] INSTANCE [INSTANCE ...]',
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'',
'{{options}}',
'Where "states" is a comma-separated list of target instance states,',
'by default "running,failed". In other words, "triton inst wait foo0" will',
'wait for instance "foo0" to complete provisioning.'
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].join('\n');
do_wait.options = [
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{
names: ['help', 'h'],
type: 'bool',
help: 'Show this help.'
},
{
names: ['states', 's'],
type: 'arrayOfString',
default: ['running', 'failed'],
helpArg: 'STATES',
help: 'Instance states on which to wait. Default is "running,failed". '
+ 'Values can be comma-separated or multiple uses of the option.'
}
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];
module.exports = do_wait;