Lambda upload file to s3. ) Terminate/destroy your EC2 instance.

s3 = boto3. One is to start with your preferred base container and then copy in and properly set up the AWS Lambda runtime. You must be sure that the chunksize that you set balances the part file size and the number of parts. Aug 16, 2016 · My lambda function was inside a private subnet within a VPC. environ['S3_BUCKET_NAME'] def lambda_handler(event, context): Mar 24, 2024 · aws s3 mb s3://your-bucket-name --region your-region. aws s3control list-access-points-for-object-lambda --account-id 111122223333. client. promise(); And now you have an AWS Lambda that can upload content into an Amazon S3 bucket. Please note that s3:PutObject and s3:PutObjectTagging are required to upload the file and put tags, respectively. We have to create a large zip outputstream (500 MB - 1 GB max file size) using AWS Lambda (Java) and transfer it to S3. You haven't shown enough information to know why put_object failed. key import Key AWS_ACCESS_KEY_ID = '' AWS_SECRET_ACCESS_KEY = '' bucket_name = AWS_ACCESS_KEY_ID. Using Lambda Function with Amazon S3 - Amazon S3 service is used for file storage, where you can upload or remove files. For example, aws s3 cp myfolder s3://mybucket/myfolder --recursive (for an entire directory). The upload_filemethod accepts a file name, a bucket name, and an objectname. The solution is to create an IAM policy allowing S3 access to your bucket (say read/write), which would look something like: Feb 26, 2018 · You can upload file to s3 bucket without back-end implemention ( aws-lambda) you can do it using client app. For instructions on how to upload a file to an Amazon S3 bucket using the AWS Management Console, see Getting started with Amazon S3. An array of images, each image having a source equal to the presigned URL of the file. I always prefer the serverless framework to deploy AWS Lambda. yml file. putObject(params, function(err, data) { // data only contains Etag }); Nov 19, 2019 · 1. * @param key. Sep 19, 2021 · Click the Next: Permissions button and then select Attach existing policies directly. Containerization. How can I create a text file in S3 from Lambda using node? Is this possible? Amazons documentation doesn't seem to Dec 9, 2015 · You can use upload manager to stream the file and upload it, you can read comments in source code you can also configure params to set the part size, concurrency & max upload parts, below is a sample code for reference. Here is the Lambda snippet to create pre-signed URL to upload file to S3: Make sure you use This value should be set to true only if the bucket has S3 object lock enabled. This post will guide you through a simple Lambda function written in Python that generates a presigned URL for general file uploads to an S3 Dec 4, 2022 · In this blog post, you’ll learn how to set up an S3 trigger that will invoke a Lambda function in response to a file uploaded into an S3 bucket. Feb 4, 2016 · The instructions under New Deployment Options for AWS Lambda include a simple Lambda function that can be used to copy a ZIP file from S3 to Lambda itself, as well as instructions for triggering its execution when a new file is uploaded. For example: with open('/tmp/file`, "wb") as f: You don't need to name this temporary file the same as the uploaded file, since you specify the S3 name via the latest variable. First make a POST request to the API, with filename (EX- File. if you needed you can do it both way. max_bandwidth: This value sets the maximum bandwidth for uploading data to Amazon S3. Click on “Create role”. The contents of event depends upon how the Lambda function is triggered (eg triggered by S3, triggered by SQS, or run via an Invoke May 23, 2020 · If the Lambda function failed to fetch a file then it should do a couple of retries and if it still fails, they should send a notification to the client who is uploading the file to S3 bucket. co Lambda file upload into an S3 bucket using Node. 5mb encoded file in upload request actually occupy more than 6mb, so the solution to upload chunks straightforward to lambda functions doesn't work. You can clone this repo and deploy it with the Serverless Framework ( serverless deploy ). To copy files from a private cloud storage bucket we recommend installing the CLI of the specific cloud provider on your Lambda Cloud instance. Sep 30, 2016 · VPC Route Table. We recommend installing the AWS CLI via pip which comes preinstalled on the base image for Lambda Cloud. — Provide a name and May 3, 2020 · Copying files from private S3, Azure, or Google Cloud buckets. js you can find a compact Lambda function which parses a multipart/form-data request and uploads the parsed files into an S3 bucket. I am facing an issue here: a. aws s3 mb <intermediary_bucket> --region <region_name>. Make sure there is no active template which would convert the request before hitting lambda and check if use lambda as proxy is checked at gateway-api dashboard for this resource. A sample of that script can be like this: #!/bin/sh. You can see this action in context in the following code examples: What i do for big files is going through S3 directly. We can trigger AWS Lambda on S3 when there are any file uploads in S3 buckets. download_fileobj('Holding - Midsummer/sample', s3Obj) VPC S3 endpoints require route table configuration and security policy configuration. Jun 4, 2019 · To create this workflow would be something like this: Create SQS queue for holding S3 PUT events. An AWS Lambda function written in Python should use the following handler: def lambda_handler (event, context): If information is being passed into the Lambda function, it will be made available via the event. promise() is also not displayed. When an object is created, the Lambda function is triggered. Bucket('marineharvester'). Make sure you download the file to that directory. . But if you put the same code in AWS You can use AWS CloudFormation to create a Lambda function using a . Sep 14, 2022 · The way the code is currently written, it does exactly what I want: creates file s3_lambda_test_DL. Source -> Code Build (npm installs and zipping etc. import os. The AWS SDK for Python provides a pair of methods to upload a file to an S3bucket. Only after the client calls CompleteMultipartUpload will the file appear in S3. from botocore. s3 import sys from boto. The docs you link to are for uploading that file, which is a separate step. aws. The file example. How to upload downloaded file to s3 bucket using Lambda function. Task Execution: Lambda keeps an eye on SQS. e (key:File. Go to properties , click create event and then give the name for the event (Example event name :S3_file_upload_event). To use AWS Lambda First you need to provide role to that pericular lambda function, which role has upload permission to AWS S3 of that bucket. Feb 15, 2021 · Also there may be config on api gateway to modify payload while pushing it to lambda. Then have your function perform whatever edits you need to on the file in the /tmp folder. zip file, you must first upload your file to an Amazon S3 bucket. The next step is to create a bucket that will serve as a Oct 7, 2021 · 1. I spawned a NAT instance in the public subnet of the same VPC. The handler has the details of the events. Jun 8, 2023 · What’s happening behind the scenes is a two-step process — first, the web page calls a Lambda function to request the upload URL, and then it uploads the JPG file directly to S3: The URL is the critical piece of the process — it contains a key, signature and token in the query parameters authorizing the transfer. It adds a policy attaching the S3 permissions required to upload a file. For instructions on how to upload a file to an Amazon S3 bucket using the AWS CLI, see Move objects in the AWS CLI User Guide. client('s3') bucket_name = os. For example, an artifact can be a local path to your AWS Lambda function's source code or an Amazon API Gateway REST API's OpenAPI file. Type S3 into the search box and in the results, check the box for AmazonS3FullAccess. # store the URL in url a. txt), the API will see this filename and Lambda function Create an Amazon S3 trigger for the Lambda function. Using AWS CLI (see Amazon's documentation), upload the file(s) to your S3 bucket. Thus using a NAT instance solved my issue, and it was a cheaper solution for me compared to a NAT Gateway. s3. Jul 22, 2019 · The IAM role associated to the function is not allowed to upload to S3. There are two ways to create a container for running in AWS lambda. I can successfully generate the signed url and upload an arbitrary file name using the below: Lambda to create the signed url: def create_presigned_post(bucket_name, object_name="${filename}", fields=None, conditions=None, expiration=3600): """Generate a presigned URL S3 POST request to upload a file. Oct 20, 2023 · Event Trigger: A file gets uploaded to S3, triggering an event. There is no default value. Frequently we use it to dump large amounts of data for later analysis. API gateway however only support files < 10 mb. Write the file back to another bucket in S3 using the resource meta. However, all of them are about how to call Lambda functions after writing to S3. (Before this command will work you need to add your S3 security credentials to a config file, as described in the Amazon documentation. Click the Next: Tags button, then click the Next: Review button. AWS Lambda has a handler function which acts as a start point for AWS Lambda function. Follow these steps: Open the IAM service in the AWS Management Console. create_bucket(bucket_name, location=boto. Click on the Configuration tab and click on Permissions in the sidebar. connect_s3(AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY) bucket = conn. The API call is linked to a Lambda that generates a signed URL, that is returned to the client, this way the client can directly upload the file to S3 whatever the size is. If the S3 Bucket has server-side encryption enabled, that value will automatically be used. You configure notification settings on a bucket, and grant Amazon S3 permission to invoke a function on the function's resource-based permissions policy. I went to the AWS management console, created an s3 bucket on the us-west2 server called "test-bucket-3x1" to use as my "source" bucket and another called "test-bucket-3x2" as my Mar 9, 2023 · 1. – Apr 24, 2020 · I am trying to create a new file using Python in AWS Lambda and write to it and then upload to an S3 bucket. Sep 14, 2020 · Select Choose file and then select a JPG file to upload in the file picker. From my understanding you want to upload images to AWS S3 bucket from local directory using AWS Lambda. Prerequisites Step 1: Create an S3 bucket Step 2: Upload a file to the S3 bucket Step 3: Create an S3 access point Step 4: Create a Lambda function Step 5: Configure an IAM policy for your Lambda function's execution role Step 6: Create an S3 Object Lambda Access Point Step 7: View the transformed data Step 8: Clean up Next steps The IAM policy grants permissions for the logs:CreateLogGroup, logs:CreateLogStream and logs:PutLogEvents actions. import pandas as pd. import boto3. we need to create event for the created S3 bucket s3-lambda-event-upload. Looking at the file sizes when I download Dec 2, 2022 · As an alternative to uploading large files for S3 buckets still using serverless architecture, you can have an HTTP endpoint that returns a pre-signed URL from S3 for later upload. To attach the IAM policy to your Lambda function's role: Open the AWS Lambda console and click on your function's name. lower() + '-dump' conn = boto. I've tried both putObject & upload (with the different params) with no success. If you want to have storage along with your function, you will need to implement AWS S3 or AWS EFS. # import json. Choose Upload image. For Amazon S3, a multi-part upload is a single file, uploaded to S3 in multiple parts. To upload a file larger than 160 GB, use the AWS Command Line Interface (AWS CLI), AWS SDKs, or Amazon S3 REST API. import datetime. Sep 10, 2018 · I've been trying to get a simple serverless API Gateway -> NodeJS Lambda -> S3 working however it appears that the Lambda just uploads corrupt files. The log of s3. Sep 15, 2018 · Current limit of AWS Lambda on post/put size request is 6mb Current limit of S3 on multipart upload is 5mb chunk size. zip or JAR files greater than 50MB, you must upload your package to an Amazon S3 bucket first. template provides sample usage. i attached the s3 full access policy to iam role. The problem is that after the deployment of my architecture, when I drop an XML file in my bucket, nothing happens the first few Oct 22, 2016 · I have a Node 4. The role should have the AmazonS3FullAccess policy attached. Jul 29, 2020 · Secure upload to S3 using PRE-Signed URL’s on NodeJs 18 using Lambda This article explores how to efficiently upload files to Amazon S3 using presigned URLs in a Node. The function signature of the method is: upload_file(Filename, Bucket, Key, ExtraArgs=None, Callback=None, Config=None) Parameters. Click on the role's name. Mar 3, 2017 · NOTE: This answer uses boto. 2. In this lab, you will use AWS Lambda to upload a file to S3 via a POST request from API Gateway using Golang. This button will sequentially call the uploadFile API endpoint, and then upload the file on S3 using the presigned URL returned by the API. You won't need access key and secret key using AWS Lambda. Testing the FILE upload. I deploy all my AWS architecture with terraform. If referencing the aws_kms_key resource, use the arn attribute. """ transfer_callback = TransferCallback(file_size_mb) s3. Jul 20, 2020 · This serverless configuration creates a lambda function integrated with the API Gateway using the lambda proxy integration. Message Queuing: S3 sends a message to SQS about the new file, queuing up the task. console. The s3 bucket must have cors enabled, for us to be able to upload files from a web application, hosted on a different domain. In Function overview, choose Add trigger. Action examples are code excerpts from larger programs and must be run in context. Configure bucket (java script) Aug 12, 2019 · S3 is an easy to use all purpose data store. The / tmp directory can only store 512 MB of data once a function is running. Apr 29, 2016 · 3. Nov 3, 2021 · I tested on my localhost, then checked on s3 and saw that there was a new file created. resource('s3'). To make the uploaded files publicly readable, we have to set the acl to public-read: What I want to do is, upon a file being uploaded to one s3 bucket, I want that upload to trigger a Lambda function that will copy that file to another bucket. Complete the following steps: Open the Functions page in the Lambda console. Creating the Lambda Function for File Upload. I want to be able to write a text file to S3 and have read many tutorials about how to integrate with S3. When I checked, it seems like multi-part upload might help. USEast1)); To retrieve a list of the Object Lambda Access Points that are associated with your AWS account, run the following command. You already have the bucket so I would do bucket. amazon. txt) as body of the request i. If the external transfer fails then Lambda should add that to any SQS queue from that any application can process messages and notify the system and also In your Lambda function you would pull the S3 object path out of the event object. In this instance it's submission_id. I start by creating the necessary IAM Role our lambda will use. Bucket: BUCKET, Key: file. We will start from scratch, and I will guide you through the process step-by-step using the AWS console. S3 — using the AWS CLI. Upload csv to s3 using client app; I. They allow access to the /tmp folder, but only for a maximum of 512MB. Feb 20, 2023 · We will write an AWS Lambda function that reads an uploaded CSV file from one S3 bucket (demo-file-upload) as a Pandas DataFrame, performs some data manipulation, and saves the Nov 8, 2022 · This video show the step by step process to trigger a lambda function on uploading a file to s3 bucket. To upload files using the AWS CLI, see Move objects in the AWS CLI User Guide. To upload to S3 better use Pre-Signed URL for an Amazon S3 PUT Operation: https Feb 29, 2024 · This guide outlines a practical approach to creating a serverless file upload solution using AWS API Gateway and S3. The upload methods require seekable file objects, but put() lets you write strings directly to a file in the bucket, which is handy for lambda functions to dynamically create and write files to an S3 bucket. You need to write a script that runs on your local desktop, can access your desktop files and then uses the Python Amazon S3 API to perform a PutObject operation. 3) Store the file in an S3 bucket. Afterw Jan 18, 2023 · Click on create role, select Lambda as the use case, and attach the AWSLambdaExecute permission policy to the role. Just update some parameters in the serverless. Defined the necessary rules for the security groups of the lambda function and NAT instance. Amazon S3 can send an event to a Lambda function when an object is created or deleted. As an example of how easy this can make development and deployment, my current workflow is: I update my Node Note: A multipart upload requires that a single file is uploaded in not more than 10,000 distinct parts. Code Snippet: MemoryStream ms = new MemoryStream(); TransferUtility utility = new TransferUtility(new AmazonS3Client("<AccessKey>", "<SecretKey>", Amazon. deploy to lambda function. Nowadays, there is a growing demand for serverless architecture, which makes uploading files to AWS S3 using API gateway with AWS Lambda (NodeJs) extremely useful. If the zip file is small, then it is working fine. Create Lambda with env variables (for bucket and queue) The lambda should check the queue if there are any in-flight messages and use just the bucket. When the upload completes, a confirmation message is displayed. Securely uploading a file to S3 using API Gateway has been widely used in tech industry. It does three steps: 1. By directly linking API Gateway to S3, we achieve a minimalistic and efficient upload mechanism, eliminating the need for intermediary Lambda functions. upload(params). AmazonS3 client = new AmazonS3Client(); /**. — Click on “Create function” and choose the “Author from scratch” option. zip all dependencies and source code in a zip file; 2. Sep 23, 2018 · STEP 5. But when testing on Lambda, although there is no error, there is no file on S3. For the purpose of this tutorial I just created a temporary S3 bucket called “ mediumtutorial ” in EU (Ireland) region May 12, 2019 · The Python Lambda code editor comes with a default lambda_function. 1) Grab an . If needed, we can provide the prefix and suffix of the file name. s3_client = boto3. You would need to show how you have configured those settings if you want help with that A local artifact is a path to a file or folder that the package command uploads to Amazon S3. Add trigger to S3 bucket on PUTs to create event in SQS queue from 1. In order to securely upload files > 10 mb, a more Learn how to invoke a Lambda function in response to a S3 File Upload in this Step by Step Video tutorial. * @param bucketName. put_object(Key=key, Body=response. xls file form an HTTP address. * The name of the bucket to place the new object in. putObject({. Nov 16, 2022 · Then I can use aws-sdk library to upload the content into an Amazon S3 bucket as following: await s3. To create a Lambda function from a . filename, ACL: 'public-read', Body: file. client('s3') def lambda_handler(event, context): bucket ='aws-simplified-transactions420'. upload the zipped file to s3 bucket; 3. You can upload any file type—images, backups, data, movies, and so on—into an S3 bucket. The maximum size of a file that you can upload by using the Amazon S3 console is 160 GB. In the bucket, you see the second JPG file you uploaded from the browser. And only after the file is complete will the Lambda function be triggered. The parameters are: Filename (str) -- The path to the file to upload. 任意の関数名を入力、python 3. Oct 15, 2021 · Writing a file to S3 using Lambda in Python with AWS. I have an AWS Lambda function which queries API and creates a dataframe, I want to write this file to an S3 bucket, I am using: import pandas as pd import s3fs df. Aug 15, 2020 · So in order for you do replicate step 1, you have to write a small script that creates an intermediate bucket and uploads your local files to it. Lambda does not allow access to the local file system. upload_file( local_file_path, object_key, Callback=transfer_callback ) return transfer_callback. Create an S3 Bucket. The lambda function that talks to s3 to get the pre-signed URL must have permissions for s3:PutObject and s3:PutObjectAcl on the bucket. zip in S3 bucket) -> Code Build (another build just for aws lambda update-funtion-code) Make sure the role for the Mar 11, 2019 · The README. See the other answer that uses boto3, which is newer. . upload_fileobj method. JS. js 18 environment Jul 21, 2023 · Step 2: Create an IAM Execution Role for Lambda. pythonで作成します。 AWS lambdaから関数の作成へ. 8を選択して関数を作成します。 参考記事のままですが以下のコードを使用しました。 Apr 8, 2024 · Uploading files securely to an S3 bucket is a common requirement for many applications. here is the code. aws s3 sync <intermediary_bucket> s3://<your_bucket_name>. Then you need to use the AWS SDK for Java to download the file from S3 to the Lambda function's /tmp folder. If you specify a file, the command directly uploads it to the S3 bucket. But you'll need to do multiple requests for multiples files, or return an array of URL, it's up to you. import urllib. 4. ) Terminate/destroy your EC2 instance. Before running the command, replace the account ID 111122223333 with your AWS account ID. If that doesn't work you should show the complete code you tried Oct 21, 2021 · Here One thing is important that What I want is to authorize lambda function using pre-signed url so that it can upload file to s3 and return an output to the user. Jul 22, 2022 · Step 3: Create event in S3. thread_info def upload_with_chunksize_and_meta( local_file_path, bucket_name, object_key, file_size_mb, metadata=None ): """ Upload a file from a local folder to an Amazon Toggle table of contents sidebar. Review the command output to find the Object Lambda Jul 13, 2022 · The upload_file method uploads a file to an S3 object. When I deploy and test the function on Lambda though, I get the following Response in the Execution log: "errorMessage": "[Errno 2] No such file or directory: 's3_lambda_test_DL. md explains how to "package" the macro template prior to adding to CloudFormation (it will need to include a separate source file for a Lambda function). Jun 16, 2023 · Create an AWS Lambda Function: — Open the Lambda service in the AWS Management Console. Also, wanted to add if you want to go on a more unattended route of deploying your Updated code to the Lambda use this flow in your code Pipeline. But what happens is the deploy command terraform apply will fail with below error: Nov 27, 2022 · I'm trying to upload files to S3 using API Gateway and Lambda, all the processes work fine until I arrive at the Lambda, my lambda looks like this: import base64. My code is as follows: from __future__ import print_function. Mar 8, 2022 · AWS Lambda functions can only write to the /tmp/ directory. To handle file uploads, write a Lambda function in your preferred language supported by AWS Lambda, such as Node. You can use Lambda to process event notifications from Amazon Simple Storage Service. When all parts have been uploaded, the client calls CompleteMultipartUpload. s3. You need to use 'w' or wb to write the file. Looking to get hands on experience building on AWS Jun 4, 2021 · 2. RegionEndpoint. Feb 29, 2020 · Step 1: Getting the pre-signed URL. Jan 12, 2024 · Understanding that S3 doesn't have directories. txt, adds text to it, and uploads it to the desired S3 bucket. import json. In Functions, choose the Lambda function. Once Feb 2, 2018 · 1. 2) Store it in a temp location. Note the top-level Transform section that refers to S3Objects, which allows the use of Type: AWS::S3::Object. It is mean to be an ephemeral environment. Uploading files#. After executing the putObject method, I get a data object, but it only contains an Etag of the recently added object. Open the object using the zipfile module. In the handler. Next, we need to create an IAM role that allows the Lambda function to interact with S3. content). Also, if the Lambda function context is reused, the next Dec 28, 2021 · I want to upload a CSV file with help of lambda. Simple S3 Download Lambda: s3Obj = StringIO() return boto3. If you want to use Python to upload a file on your local desktop, you cannot use a Lambda function. Timestamps:0:04 - Introduction0:27 - Create S3 bucket0 Jun 7, 2017 · I'm using an AWS Lambda function to create a file and save it to my bucket on S3, it is working fine. Here's an article from AWS explaining this. Connection timeout as the file is large. 0. txt s3://danilop-data/ Using S3 Object Lambda with my existing applications is very simple. Oct 30, 2020 · Large Data transfer using AWS Lambda and AWS S3. Bucket(bucket_name). Jan 8, 2019 · It appears you have configured an Event on the Amazon S3 bucket to trigger the Lambda function when an object is created. kms_key_id - (Optional) ARN of the KMS Key to use for object encryption. Nov 8, 2023 · A File input to chose a file and a Upload file button to upload the file on S3. Using S3 Put events with Lambda, we can s Nov 12, 2019 · In this video, I walk you through how to upload a file into s3 from a Lambda function. to_csv('s3. js or Sep 22, 2017 · When trying to save the file to bucket the file size is less than the uploaded and is corrupted. Try this import boto import boto. I want each filename to be unique based on a variable. Create an IAM role that grants your Lambda function access to S3. Sep 27, 2020 · Use Case: Uploading a large csv file using AWS lambda to AWS S3 Problem : Storage limitation of lambda at run time. I have a bucket in which I can upload XML files which triggers a lambda to process these files (the events are well informed). This code would download the file from a URL then straight upload to S3. client import Config. Here it looks like: user asks to upload a file ---> a presigned url gets created --> (which will trigger lambda function to upload file to s3) --> lambda function return some output Sep 19, 2020 · The first step is to create an S3 bucket in the AWS Management Console. Sep 9, 2021 · 1. Jun 21, 2021 · The basic steps are: Read the zip file from S3 using the Boto3 S3 resource Object into a BytesIO buffer object. Choose the “Lambda” service as the trusted entity and The following code examples show how to use PutObject. Oct 31, 2016 · I may have comparing this with download_fileobj() which is for large multipart file uploads. ) -> S3 Upload (sourcecode. Mar 18, 2021 · With the AWS Command Line Interface (AWS CLI), I upload a text file containing a few sentences to the S3 bucket behind the S3 Object Lambda Access Point: aws s3 cp s3. Click on “Roles” in the left navigation pane. Review the IAM user configuration and click the Create user button. In Bucket, enter the name of your source bucket. Feb 25, 2024 · navigation Uploading a File to AWS S3 with AWS Lambda (Golang) Overview. zip file archive. I found thta AWS Lambda, coupled with S3 presigned URLs, provides an efficient and secure solution to achieve this. py file with a lambda_handler This article explores how to efficiently upload files to Amazon S3 using presigned URLs in a May 11, 2023 · In this tutorial video, I guide you through the process of uploading large files to Amazon S3 using API Gateway and Lambda functions, while overcoming the de For . Yes, you have to create a text file in S3 bucket and take a reference of the following code to update the file contents as per your requirement. Iterate over each file in the zip file using the namelist method. After uploading the artifacts, the command lambdaロールにS3へのアクセス権限を付与する がポイントのようです。 lambda関数の作成. content }) . From the Trigger configuration dropdown list, choose S3. Navigate to the S3 console, and open the S3 bucket created by the deployment. connection I have a problem with AWS Lambda and S3. Jul 22, 2019 · Below is the configuration I use to deploy python code to lambda. txt'", May 4, 2022 · So, let’s package it up in a container and test it out with the lambda runtime. Bucket (str) -- The name of the bucket to upload to. 3 Lambda function in AWS. The method handles large files by splitting them into smaller chunksand uploading each chunk in parallel. It has no access to your desktop as the Lambda function runs in the cloud. ys vl rr bp pk jn cd gk ge cb