🍀 Reduce unnecessary requests by disabling sagemaker_check() explicitly in Blocks

[vmatt]

• I have searched to see if a similar issue already exists.

Is your feature request related to a problem? Please describe.

I'm developing a gradio app, which will be used in a environment without internet access.
I noticed, that To create a public link, set 'share=True' in 'launch()'. appears very slowly (8-15 seconds) when running on the isolated instance, but it is way faster on my internet-connected development machine.

After turned on .DEBUG log level, i saw that in Blocks.py, there is line: is_sagemaker = utils.sagemaker_check(), which function imports boto3 & invokes a caller identity check against AWS services. This includes sending mutliple requests against AWS.

One thing I quickly realised, that this happens after the local app server starts, so there is no real performance/startup benefit, I can access the Gradio interface in 3-5 seconds no matter what happens later. However, I don't see the point sending requests to AWS each startup by default. I don't know the numbers but I'm guessing there are a substantial amount of the users who are not using Gradio via Sagemaker.

Describe the solution you'd like

So in the name of environmental friendliness 🍀 to reduce unnecessary requests to AWS, I'm proposing two options:

1. Breaking change: set is_sagemaker default to False, and and create a check_sagemaker flag for Blocks(), which needs to explicitly set to True, if the user is using Sagemaker and want to run utils.sagemaker_check()
2. Non-breaking change: allow user to define is_sagemaker value explicitly when creating a block:
   with gr.Blocks(analytics_enabled=False, is_sagemaker=False) as interface:

Option 1. as-is for sure a no-go, as any current Sagemaker deployment would need to add check_sagemaker() flag.

So I'll try to implement option 2, and open a PR for a it. But let me know if you have a better idea!

Additional context

Running this on on my local machine, this causes not much issue, but on the isolated environment, boto3 calls times out.

urllib3.exceptions.NameResolutionError: <botocore.awsrequest.AWSHTTPSConnection object at 0x142239250>: Failed to resolve 'sts.amazonaws.com' ([Errno 8] nodename nor servname provided, or not known)

Without internet access

is_sagemaker=None

2024-10-05 13:46:41,604 - INFO - Start
Running on local URL:  http://127.0.0.1:7860
2024-10-05 13:46:45,186 - INFO - HTTP Request: GET http://127.0.0.1:7860/startup-events "HTTP/1.1 200 OK"
2024-10-05 13:46:45,312 - INFO - Found credentials in shared credentials file: ~/.aws/credentials
2024-10-05 13:46:50,773 - INFO - HTTP Request: HEAD http://127.0.0.1:7860/ "HTTP/1.1 200 OK"
To create a public link, set `share=True` in `launch()`.

• Time to URL accessible (45.18-41.6): 3.58 sec
• Time to async requests completed (50.7-41.6): 9.1 sec

is_sagemaker=False

2024-10-05 13:48:26,701 - INFO - Start
Running on local URL:  http://127.0.0.1:7860
2024-10-05 13:48:30,290 - INFO - HTTP Request: GET http://127.0.0.1:7860/startup-events "HTTP/1.1 200 OK"
2024-10-05 13:48:30,316 - INFO - HTTP Request: HEAD http://127.0.0.1:7860/ "HTTP/1.1 200 OK"
To create a public link, set `share=True` in `launch()`.

• Time to URL accessible (30.29-26.7): 3.59 sec
• Time to async requests completed(30.31-26.70): 3.61 sec

With internet access

is_sagemaker=None

2024-10-05 13:53:00,889 - INFO - Start
Running on local URL:  http://127.0.0.1:7860
2024-10-05 13:53:05,111 - INFO - HTTP Request: GET http://127.0.0.1:7860/startup-events "HTTP/1.1 200 OK"
2024-10-05 13:53:05,322 - INFO - Found credentials in shared credentials file: ~/.aws/credentials
2024-10-05 13:53:06,025 - INFO - HTTP Request: HEAD http://127.0.0.1:7860/ "HTTP/1.1 200 OK"
To create a public link, set `share=True` in `launch()`.

• Time to URL accessible (5.11-0.89): 4.22 sec
• Time to async requests completed (6.02-0.89): 5.13 sec

is_sagemaker=False

2024-10-05 17:11:20,441 - INFO - Start
Running on local URL:  http://127.0.0.1:7860
2024-10-05 17:11:24,176 - INFO - HTTP Request: GET http://127.0.0.1:7860/startup-events "HTTP/1.1 200 OK"
2024-10-05 17:11:24,201 - INFO - HTTP Request: HEAD http://127.0.0.1:7860/ "HTTP/1.1 200 OK"
To create a public link, set `share=True` in `launch()`.

• Time to URL accessible (24.17-20.44): 3.73 sec
• Time to async requests completed (24.20-20.44): 3.76 sec

[abidlabs]

Closed via #9546, thanks @vmatt for bringing this to our attention