MXS-620: Add start/stop maxscale to MaxCtrl

The commands allow all services in MaxScale to be either stopped or
started.

maxctrl/lib/common.js

@@ -174,6 +174,10 @@ module.exports = function() {
         return base + argv.user + ':' + argv.password + '@' + host + '/v1/' + endpoint
     }
 
+    this.OK = function() {
+        return Promise.resolve(colors.green('OK'))
+    }
+
     // Helper for executing requests and handling their responses, returns a
     // promise that is fulfilled when all requests successfully complete. The
     // promise is rejected if any of the requests fails.
@@ -190,7 +194,7 @@ module.exports = function() {
                     return cb(res)
                 } else {
                     // Request OK, no data or data is ignored
-                    return Promise.resolve(colors.green('OK'))
+                    return OK()
                 }
             }, function(err) {
                 if (err.response && err.response.body) {

maxctrl/lib/start.js

@@ -27,6 +27,20 @@ exports.builder = function(yargs) {
                 return doRequest(host, 'monitors/' + argv.name + '/start', null, {method: 'PUT'})
             })
         })
+        .command('maxscale', 'Start MaxScale by starting all services', {}, function(argv) {
+            maxctrl(argv, function(host) {
+                return doRequest(host, 'services/', function(res) {
+                    var promises = []
+
+                    res.data.forEach(function(i) {
+                        promises.push(doRequest(host, 'services/' + i.id + '/start', null, {method: 'PUT'}))
+                    })
+
+                    return Promise.all(promises)
+                        .then(() => OK())
+                })
+            })
+        })
         .usage('Usage: start <command>')
         .help()
         .command('*', 'the default command', {}, function(argv) {

maxctrl/lib/stop.js

@@ -27,6 +27,20 @@ exports.builder = function(yargs) {
                 return doRequest(host, 'monitors/' + argv.name + '/stop', null, {method: 'PUT'})
             })
         })
+        .command('maxscale', 'Stop MaxScale by stopping all services', {}, function(argv) {
+            maxctrl(argv, function(host) {
+                return doRequest(host, 'services/', function(res) {
+                    var promises = []
+
+                    res.data.forEach(function(i) {
+                        promises.push(doRequest(host, 'services/' + i.id + '/stop', null, {method: 'PUT'}))
+                    })
+
+                    return Promise.all(promises)
+                        .then(() => OK())
+                })
+            })
+        })
         .usage('Usage: stop <command>')
         .help()
         .command('*', 'the default command', {}, function(argv) {