Improving failure warnings

Author: Tim92

README.md

@@ -432,3 +432,4 @@ In lieu of a formal styleguide, take care to maintain the existing coding style.
 ## Release History
 * 0.1.0 - Initial release
 * 0.2.0 - Adding some unit tests, refactoring deploy task into single task and converting tasks to multitasks
+* 0.3.0 - Adding more warnings for various failure cases

package.json

@@ -1,7 +1,7 @@
 {
     "name": "grunt-aws-lambda",
     "description": "A grunt plugin to help develop AWS Lambda functions.",
-    "version": "0.2.0",
+    "version": "0.3.0",
     "homepage": "https://github.com/Tim-B/grunt-aws-lambda",
     "author": {
         "name": "Tim-B",

tasks/lambda_deploy.js

@@ -44,12 +44,14 @@ module.exports = function (grunt) {
 
         lambda.getFunction({FunctionName: deploy_function}, function (err, data) {
 
-            if (data === null)
-            {
-                grunt.fail.warn('Unable to find lambda function ' + deploy_function + ' , verify the lambda function name and AWS region are correct');
+            if (err) {
+                if(err.statusCode === 404) {
+                    grunt.fail.warn('Unable to find lambda function ' + deploy_function + ', verify the lambda function name and AWS region are correct.');
+                } else {
+                    grunt.fail.warn('AWS API request failed, check your AWS credentials and permissions are correct.');
+                }
             }
 
-
             var current = data.Configuration;
 
             var params = {
@@ -64,6 +66,9 @@ module.exports = function (grunt) {
             fs.readFile(deploy_package, function (err, data) {
                 params['FunctionZip'] = data;
                 lambda.uploadFunction(params, function (err, data) {
+                    if (err) {
+                        grunt.fail.warn('Package upload failed, check you have iam:PassRole permissions.');
+                    }
                     grunt.log.writeln('Package deployed.');
                     done(true);
                 });

tasks/lambda_package.js

@@ -47,7 +47,7 @@ module.exports = function (grunt) {
         var archive_name = pkg.name + '_' + file_version + '_' + time_string;
 
 
-        npm.load([], function (er, npm) {
+        npm.load([], function (err, npm) {
 
             npm.config.set('loglevel', 'silent');