Textract API with Lambda - Getting InvalidS3ObjectException error

Question

Hi,
I am trying to run the same 
1. directly from AWS CloudShell with 'python3 textract_doc_analysis.py' command, 
2. running it through Lambda.
In both the cases I modified the code. But, they didn't work.

For Lambda Role, I added the policies for S3 and Textract full access, apart from Lambda credentials.
Also, explicitly added the S3 object paths also.
----------- Lambda Role --------------
{
	"Version": "2012-10-17",
	"Statement": [
		{
			"Effect": "Allow",
			"Action": "logs:CreateLogGroup",
			"Resource": "arn:aws:logs:us-east-2:xxxxxxxxx:*"
		},
		{
			"Effect": "Allow",
			"Action": [
				"logs:CreateLogStream",
				"logs:PutLogEvents"
			],
			"Resource": [
				"arn:aws:logs:us-east-2:xxxxxxxx:log-group:/aws/lambda/textract_doc_analysis:*"
			]
		},
		{
			"Effect": "Allow",
			"Action": [
				"s3:GetObject",
				"s3:PutObject"
			],
			"Resource": [
				"arn:aws:s3:::learn-textract-bucket-20230626*",
				"arn:aws:s3:::learn-textract-bucket-20230626/*",
				"arn:aws:s3:::learn-textract-bucket-20230626/pdf-invoices3.pdf",
				"arn:aws:s3:::learn-textract-bucket-20230626/pdf-sample1.pdf"
			]
		}
	]
}
----------------------------------

---- error ------
  "errorMessage": "An error occurred (InvalidS3ObjectException) when calling the StartDocumentAnalysis operation: Unable to get object metadata from S3. Check object key, region and/or access permissions.",
  "errorType": "InvalidS3ObjectException",

-----  code -------

import json
import boto3
def lambda_handler(event, context):
boto3.set_stream_logger(name='botocore')
    
# s = boto3.Session(profile_name="default")
s = boto3.Session()   #  ???? Not sure whether this is right ?????

tx = s.client("textract", region_name='us-east-2')
doc = "/pdf-files/sample_pay_stub.pdf"
bucket = "learn-textract-bucket-20230626"

resp = tx.start_document_analysis(
        DocumentLocation={
            "S3Object": {
                "Bucket": bucket,
                "Name": doc
            }
        },
        FeatureTypes=["TABLES"]
    )

print(resp)

return {
        'statusCode': 200,
        'body': json.dumps('Hello from Lambda!')
    }

Answer

Yes. Got it. Thanks.

Answer

Please refer to a sample of Lambda function using Textract : https://docs.aws.amazon.com/textract/latest/dg/lambda.html

in its simplest form, it should look like this :

```
import boto3
import json
import os

def lambda_handler(event, context):
    print(event)
    # Get the service resource
    textract = boto3.client('textract')
    # Call Amazon Textract
    response = textract.detect_document_text(
        Document={
            'S3Object': {
                'Bucket': os.environ['BUCKET_NAME'],
                'Name': event['Records'][0]['s3']['object']['key']
            }
        })
    # Print detected text
    print(response)
    return response

```

Textract API with Lambda - Getting InvalidS3ObjectException error

s = boto3.Session(profile_name="default")

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