upload image

functions/uploadImage/index.js

@@ -0,0 +1,30 @@
+
+
+const AWS = require('aws-sdk');
+
+const s3 = new AWS.S3();
+
+const v4 = require('uuid').v4;
+
+function generateUploadParams(content_type, extension, key){
+  return {
+    Bucket: process.env.S3_BUCKET,
+    Key: `${process.env.NODE_ENV}/${(key) ? key : v4()}${extension}`,
+    ContentType: content_type,
+    ACL: 'public-read'
+  }
+}
+
+module.exports.handler = (event, context, callback) => {
+    let query = (event.queryStringParameters) ? event.queryStringParameters : event;
+    let extension = /^\.\w*$/.test(query.extension) ? query.extension : (typeof query.extension != 'undefined') ? `.${query.extension}` : ".undefined";
+    let key = (query.key) ? query.key : null;
+    let content_type = query.content_type;
+    if (!content_type) return callback(null, {statusCode:400, body: JSON.stringify({message:'please provide a content_type and extension'})});
+    s3.getSignedUrl('putObject', generateUploadParams(content_type, extension, key), function (error, url) {
+        if(error) return callback(null, {statusCode:error.statusCode || 500, body:JSON.stringify({message:error.message})});
+        else callback(null, {statusCode:200, body:JSON.stringify({url:url})});
+    });
+}
+
+module.exports.generateUploadParams = generateUploadParams;

functions/uploadImage/index.spec.js

@@ -0,0 +1,24 @@
+const {
+  generateUploadParams,
+} = require('./index.js');
+
+
+describe('uploadImage', () => {
+  describe('generateUploadParams', () => {
+    // todo: if event is `{}` promise goes unresolved
+    // todo: JSON stringify responses
+    // todo: 'crop' twice in GM_KEYS
+
+    test('should generate correct upload parameters', (done) => {
+      const expected = {
+        Bucket: process.env.S3_BUCKET,
+        Key: `${process.env.NODE_ENV}/test.jpg`,
+        ContentType: 'image/jpeg',
+        ACL: 'public-read'
+      };
+      const actual = generateUploadParams('image/jpeg', '.jpg', 'test');
+      expect(actual).toEqual(expected);
+      done();
+    });
+  });
+});

serverless.yml

@@ -35,15 +35,21 @@ functions:
       - http: GET {proxy+}
     package:
       include:
-        - bin/APIInterface/**
         - functions/getImage/**
   resizeImage:
     name: ${self:provider.environment.RESIZE_LAMBDA}
     handler: functions/resizeImage/index.handler
     package:
       include:
-        - bin/APIInterface/**
         - functions/resizeImage/**
+  uploadImage:
+    name: ${self:service}-${self:provider.stage}-uploadImage
+    handler: functions/uploadImage/index.handler
+    events:
+      - http: POST /upload
+    package:
+      include:
+        - functions/uploadImage/**