Add resource count and warning to info display

lib/plugins/aws/info/display.js

@@ -12,7 +12,15 @@ module.exports = {
     message += `${chalk.yellow('service:')} ${info.service}\n`;
     message += `${chalk.yellow('stage:')} ${info.stage}\n`;
     message += `${chalk.yellow('region:')} ${info.region}\n`;
-    message += `${chalk.yellow('stack:')} ${info.stack}`;
+    message += `${chalk.yellow('stack:')} ${info.stack}\n`;
+    message += `${chalk.yellow('resources:')} ${info.resourceCount}`;
+
+    if (info.resourceCount >= 150) {
+      message += `\n${chalk.red('WARNING:')}\n`;
+      message += `  You have ${info.resourceCount} resources in your service.\n`;
+      message += '  CloudFormation has a hard limit of 200 resources in a service.\n';
+      message += '  For advice on avoiding this limit, check out this link: http://bit.ly/2IiYB38.';
+    }
 
     this.serverless.cli.consoleLog(message);
     return message;

lib/plugins/aws/info/display.test.js

@@ -32,6 +32,7 @@ describe('#display()', () => {
         endpoint: null,
         functions: [],
         apiKeys: [],
+        resourceCount: 10,
       },
     };
     consoleLogStub = sinon.stub(serverless.cli, 'consoleLog').returns();
@@ -48,7 +49,8 @@ describe('#display()', () => {
     expectedMessage += `${chalk.yellow('service:')} my-first\n`;
     expectedMessage += `${chalk.yellow('stage:')} dev\n`;
     expectedMessage += `${chalk.yellow('region:')} eu-west-1\n`;
-    expectedMessage += `${chalk.yellow('stack:')} my-first-dev`;
+    expectedMessage += `${chalk.yellow('stack:')} my-first-dev\n`;
+    expectedMessage += `${chalk.yellow('resources:')} 10`;
 
     const message = awsInfo.displayServiceInfo();
     expect(consoleLogStub.calledOnce).to.equal(true);

lib/plugins/aws/info/getResourceCount.js

@@ -0,0 +1,19 @@
+'use strict';
+
+const BbPromise = require('bluebird');
+
+module.exports = {
+  getResourceCount() {
+    const stackName = this.provider.naming.getStackName();
+
+    return this.provider.request('CloudFormation',
+      'listStackResources',
+      { StackName: stackName })
+    .then((result) => {
+      if (result) {
+        this.gatheredData.info.resourceCount = result.StackResourceSummaries.length;
+      }
+      return BbPromise.resolve();
+    });
+  },
+};

lib/plugins/aws/info/index.js

@@ -3,6 +3,7 @@
 const BbPromise = require('bluebird');
 const validate = require('../lib/validate');
 const getStackInfo = require('./getStackInfo');
+const getResourceCount = require('./getResourceCount');
 const getApiKeyValues = require('./getApiKeyValues');
 const display = require('./display');
 
@@ -15,6 +16,7 @@ class AwsInfo {
       this,
       validate,
       getStackInfo,
+      getResourceCount,
       getApiKeyValues,
       display
     );
@@ -54,6 +56,7 @@ class AwsInfo {
 
       'aws:info:gatherData': () => BbPromise.bind(this)
         .then(this.getStackInfo)
+        .then(this.getResourceCount)
         .then(this.getApiKeyValues),
 
       'aws:info:displayServiceInfo': () => BbPromise.bind(this)