Implement 'resin local scan'

lib/actions/local/index.coffee

@@ -18,3 +18,4 @@ exports.configure = require('./configure')
 exports.flash = require('./flash')
 exports.logs = require('./logs')
 exports.promote = require('./promote')
+exports.scan = require('./scan')

lib/actions/local/scan.coffee

@@ -0,0 +1,92 @@
+###
+Copyright 2017 Resin.io
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+	 http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+###
+
+
+dockerInfoProperties = [
+	'Containers'
+	'ContainersRunning'
+	'ContainersPaused'
+	'ContainersStopped'
+	'Images'
+	'Driver'
+	'SystemTime'
+	'KernelVersion'
+	'OperatingSystem'
+	'Architecture'
+]
+
+dockerVersionProperties = [
+	'Version'
+	'ApiVersion'
+]
+
+module.exports =
+	signature: 'local scan'
+	description: 'Scan for resinOS devices in your local network'
+	help: '''
+
+		Examples:
+
+			$ resin local scan
+			$ resin local scan --timeout 120
+			$ resin local scan --verbose
+	'''
+	options: [
+		signature: 'verbose'
+		boolean: true
+		description: 'Display full info'
+		alias: 'v'
+	,
+		signature: 'timeout'
+		parameter: 'timeout'
+		description: 'Scan timeout in seconds'
+		alias: 't'
+	]
+	primary: true
+	action: (params, options, done) ->
+		Promise = require('bluebird')
+		_ = require('lodash')
+		prettyjson = require('prettyjson')
+		Docker = require('docker-toolbelt')
+		{ discover } = require('resin-sync')
+		{ SpinnerPromise } = require('resin-cli-visuals')
+
+		if options.timeout?
+			options.timeout *= 1000
+
+		Promise.try ->
+			new SpinnerPromise
+				promise: discover.discoverLocalResinOsDevices(options.timeout)
+				startMessage: 'Scanning for local resinOS devices..'
+				stopMessage: 'Reporting scan results'
+		.tap (devices) ->
+			if _.isEmpty(devices)
+				throw new Error('Could not find any resinOS devices in the local network')
+		.map ({ host, address }) ->
+			docker = new Docker(host: address, port: 2375)
+			Promise.props
+				dockerInfo: docker.infoAsync().catchReturn('Could not get Docker info')
+				dockerVersion: docker.versionAsync().catchReturn('Could not get Docker version')
+			.then ({ dockerInfo, dockerVersion }) ->
+
+				if not options.verbose
+					dockerInfo = _.pick(dockerInfo, dockerInfoProperties) if _.isObject(dockerInfo)
+					dockerVersion = _.pick(dockerVersion, dockerVersionProperties) if _.isObject(dockerVersion)
+
+				return { host, address, dockerInfo, dockerVersion }
+		.then (devicesInfo) ->
+			console.log(prettyjson.render(devicesInfo, noColor: true))
+		.nodeify(done)