Add Node.js 10.x Version Lambda script

lambda/GetSignedURL.js

@@ -2,6 +2,69 @@ var AWS = require('aws-sdk')
 var s3 = new AWS.S3();
 var bucketName = process.env.AWS_BUCKET_NAME
 
+exports.handler = async (event) => {
+  let payload = {};
+    if(event.body){
+      payload = JSON.parse(event.body);
+    }
+    const params = {
+        Bucket: bucketName,
+        Key: payload.filePath,
+        Expires: 3600,
+        ContentType: payload.contentType
+    }
+    const response = {
+      statusCode: 200,
+      headers: {
+        "Access-Control-Allow-Origin" : "*",
+        "Access-Control-Allow-Credentials": true,
+        "Access-Control-Allow-Headers": 'content-type',
+      },
+      body: {},
+    }
+    if (!payload.hasOwnProperty('contentType')) {
+      response.body = JSON.stringify({
+        err: 'Missing contentType'
+      })
+      return response;
+    }
+
+    if (!payload.hasOwnProperty('filePath')) {
+      response.body = JSON.stringify({
+        err: 'Missing filePath'
+      })
+      return response;
+    }
+
+    try{
+      const url = await _getUrl(params);
+      response.body = JSON.stringify({
+        url
+      })
+    }catch(err){
+      response.body = JSON.stringify({
+        err: err
+      })
+    }
+    return response;
+
+    function _getUrl(params){
+      return new Promise((resolve, reject) => {
+        s3.getSignedUrl('putObject', params, (err, url) => {
+            if (err) {
+                reject(err);
+            } else {
+                resolve(url);
+            }
+        })
+      });
+    }
+};
+
+var AWS = require('aws-sdk')
+var s3 = new AWS.S3();
+var bucketName = process.env.AWS_BUCKET_NAME
+
 exports.handler = (event, context) => {
     if (!event.hasOwnProperty('contentType')) {
         context.fail({ err: 'Missing contentType' })

lambda/GetSignedURLv4.js

@@ -0,0 +1,62 @@
+var AWS = require('aws-sdk')
+var s3 = new AWS.S3();
+var bucketName = process.env.AWS_BUCKET_NAME
+
+exports.handler = async (event) => {
+  let payload = {};
+    if(event.body){
+      payload = JSON.parse(event.body);
+    }
+    const params = {
+        Bucket: bucketName,
+        Key: payload.filePath,
+        Expires: 3600,
+        ContentType: payload.contentType
+    }
+    const response = {
+      statusCode: 200,
+      headers: {
+        "Access-Control-Allow-Origin" : "*",
+        "Access-Control-Allow-Credentials": true,
+        "Access-Control-Allow-Headers": 'content-type',
+      },
+      body: {},
+    }
+    if (!payload.hasOwnProperty('contentType')) {
+      response.body = JSON.stringify({
+        err: 'Missing contentType'
+      })
+      return response;
+    }
+
+    if (!payload.hasOwnProperty('filePath')) {
+      response.body = JSON.stringify({
+        err: 'Missing filePath'
+      })
+      return response;
+    }
+
+    try{
+      const url = await _getUrl(params);
+      response.body = JSON.stringify({
+        url
+      })
+    }catch(err){
+      response.body = JSON.stringify({
+        err: err
+      })
+    }
+    return response;
+
+    function _getUrl(params){
+      return new Promise((resolve, reject) => {
+        s3.getSignedUrl('putObject', params, (err, url) => {
+            if (err) {
+                reject(err);
+            } else {
+                resolve(url);
+            }
+        })
+      });
+    }
+};

lambda/README.md

@@ -1,7 +1,7 @@
 ## Quickstart
 
   1. create a blank AWS Lambda function
-  2. choose Node 4.3 runtime
+  2. choose Node 10.x or 4.3 runtime (If using 4.3 runtime, use GetSignedURLv4.js)
   3. paste the code in `GetSignedURL.js` to the Lambda function code
   4. add an env variable `AWS_BUCKET_NAME` with value equals to your S3 bucket
      name