amazon-s3

问题 I am using the python boto3 library to download files from s3 to an IOT device on a cellular connection which is often slow and shaky. Some files are quite large (250Mb, which for this scenario is large) and the network fails and the device reboots while downloading. I would like to resume the download from the place it ended when the device rebooted. Is there any way to do it? The aborted download does seem to keep downloaded data in a temporary file while downloading so the data is there.

问题 I am uploading a file to AWS S3 using AWS Lambda function (Python3.8) with the following code. file_obj = open(filename, 'rb') s3_upload = s3.put_object( Bucket="aaa", Key="aaa.png", Body=file_obj) return { 'statusCode': 200, 'body': json.dumps("Executed Successfully") } I want to get the location/url of the S3 object in return . In Node.js we use the .location parameter for getting the object location/url. Any idea how to do this using python 3.8? 回答1: The url of S3 objects has known format

问题 I am uploading a file to AWS S3 using AWS Lambda function (Python3.8) with the following code. file_obj = open(filename, 'rb') s3_upload = s3.put_object( Bucket="aaa", Key="aaa.png", Body=file_obj) return { 'statusCode': 200, 'body': json.dumps("Executed Successfully") } I want to get the location/url of the S3 object in return . In Node.js we use the .location parameter for getting the object location/url. Any idea how to do this using python 3.8? 回答1: The url of S3 objects has known format

问题 I've been tasked with figuring out how the AWS PHP sdk works so we can possibly use it for hosting customer image data for our web server. I've been able to successfully test most of the functionality of creating, managing and loading data into a bucket, but when I try to view the contents I get 'access denied'. Going into the management console, I figured out how to set the permissions so I could view the file, either with a specific host rule or by setting both the bucket and the object

问题 I've been trying to get OpenCV into an S3 bucket and then assign it to a lambda layer. Theres very little about this online and what I have seen hasn't worked. I've managed to use docker with the amazon linux environment, and followed this tutorial. https://aws.amazon.com/premiumsupport/knowledge-center/lambda-layer-simulated-docker/ I've added setuptools, wheel and opencv-python==4.4.0.42 to the requirements.txt file. setuptools and wheel because of an earlier error where the recommendation

问题 I've been trying to get OpenCV into an S3 bucket and then assign it to a lambda layer. Theres very little about this online and what I have seen hasn't worked. I've managed to use docker with the amazon linux environment, and followed this tutorial. https://aws.amazon.com/premiumsupport/knowledge-center/lambda-layer-simulated-docker/ I've added setuptools, wheel and opencv-python==4.4.0.42 to the requirements.txt file. setuptools and wheel because of an earlier error where the recommendation

问题 I have an application that stores images in AWS S3. It is like a profile picture upload case. After uploading the profile picture, the image will be stored in AWS S3 and the S3 link will be stored in a database. The application will then show the profile picture using that link in the database. Right now, as the bucket is private the profile picture is not visible in my application. How can I use this link to show the image without making the bucket public? I don't think, I can use AWS's

问题 I have an application that stores images in AWS S3. It is like a profile picture upload case. After uploading the profile picture, the image will be stored in AWS S3 and the S3 link will be stored in a database. The application will then show the profile picture using that link in the database. Right now, as the bucket is private the profile picture is not visible in my application. How can I use this link to show the image without making the bucket public? I don't think, I can use AWS's

问题 I have to download a file from my S3 bucket onto my server for some processing. The bucket does not support direct connections and has to use a Pre-Signed URL . The Boto3 Docs talk about using a presigned URL to upload but do not mention the same for download. 回答1: import boto3 s3_client = boto3.client('s3') BUCKET = 'my-bucket' OBJECT = 'foo.jpg' url = s3_client.generate_presigned_url( 'get_object', Params={'Bucket': BUCKET, 'Key': OBJECT}, ExpiresIn=300) print(url) For another example, see:

问题 I have to download a file from my S3 bucket onto my server for some processing. The bucket does not support direct connections and has to use a Pre-Signed URL . The Boto3 Docs talk about using a presigned URL to upload but do not mention the same for download. 回答1: import boto3 s3_client = boto3.client('s3') BUCKET = 'my-bucket' OBJECT = 'foo.jpg' url = s3_client.generate_presigned_url( 'get_object', Params={'Bucket': BUCKET, 'Key': OBJECT}, ExpiresIn=300) print(url) For another example, see: