epsagon/list-lambdas

Enumerate Lambda functions across all regions with useful metadata 💡💵⚙

List Lambdas functions =====================

(Based on photo by Valve Software / CC BY-SA 4.0)

Motivation

• Read our blog post, "The curse of dead Lambda functions".
• Enumerate list of Lambda functions from every region.
• Detect "dead" or unused Lambda functions.

Setup

git clone https://github.com/epsagon/list-lambdas
cd list-lambdas/
pip install -r requirements.txt
python list_lambdas.py

Docker -----.. code-block:: bash

git clone https://github.com/epsagon/list-lambdas cd list-lambdas/ docker build -t list_lambdas:latest . docker run --rm -v $HOME/.aws:/root/.aws -t list_lambdas:latest --profile myprofile

Example Outputs

CLI:

CSV file:

Usage

Filter only Lambda functions that have not been active in the last 10 days:

python list_lambdas.py --inactive-days-filter 10

Print extended information to the screen (same as in the CSV file):

python list_lambdas.py --all

Sort by a chosen column (e.g. by last invocation time):

python list_lambdas.py --sort-by last-invocation

Output table (with extra data) to a CSV file:

python list_lambdas.py --csv lambdas.csv

Provide credentials:

python list_lambdas.py --token-key-id <access_key_id> --token-secret <secret_access_key>

list-lambdas's Issues

Add to awesome-functions

It's a good candidate for https://github.com/plutov/awesome-functions

--all flag fails to produce output

The standard: "python list_lambdas.py" command completes successfully, but if I add the "--all" flag the following message is produced:

python list_lambdas.py --all
100% (15 of 15) |#############################################################################################################################| Elapsed Time: 0:00:23 Time: 0:00:23
Traceback (most recent call last):
  File "list_lambdas.py", line 251, in <module>
    print_lambda_list(arguments)
  File "list_lambdas.py", line 191, in print_lambda_list
    print(table.table)
  File "C:\Python36\lib\site-packages\terminaltables\base_table.py", line 216, in table
    dimensions = max_dimensions(self.table_data, self.padding_left, self.padding_right)[:3]
  File "C:\Python36\lib\site-packages\terminaltables\width_and_alignment.py", line 106, in max_dimensions
    inner_heights[j] = max(inner_heights[j], cell.count('\n') + 1)
TypeError: a bytes-like object is required, not 'str'

I'm on Windows 10 with Python 3.6.4

UnicodeEncodeError for lambda with non-ASCII description

100% (15 of 15) |####################################| Elapsed Time: 0:00:25 Time: 0:00:25
Traceback (most recent call last):
File "list_lambdas.py", line 230, in
print_lambda_list(args)
File "list_lambdas.py", line 168, in print_lambda_list
min_table_data, all_table_data = create_tables(lambdas_data, args)
File "list_lambdas.py", line 99, in create_tables
str(function_data['Description']),
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe9' in position 9: ordinal not in range(128)

ValueError: max() arg is an empty sequence

46% (7 of 15) |########################################################################## | Elapsed Time: 0:00:15 ETA: 0:00:18Traceback (most recent call last):
File "list_lambdas.py", line 222, in
print_lambda_list(args)
File "list_lambdas.py", line 143, in print_lambda_list
[log.get('lastEventTimestamp', 0) for log in logs['logStreams']]
ValueError: max() arg is an empty sequence

Example Issue

This is an example issue

Security Policy violation Branch Protection

This issue was automatically created by Allstar.

Security Policy Violation
PR Approvals not configured for branch master

---

This issue will auto resolve when the policy is in compliance.

Issue created by Allstar. See https://github.com/ossf/allstar/ for more information. For questions specific to the repository, please contact the owner or maintainer.

Sort by

Feature request

is it possible to sort by runtime?

Issue outputting to csv

python3 list_lambdas.py --csv lambdas.csv

Traceback (most recent call last):
  File "list_lambdas.py", line 251, in <module>
    print_lambda_list(arguments)
  File "list_lambdas.py", line 198, in print_lambda_list
    output_file.writelines('{0}\n'.format(','.join(table_row)).decode('utf-8'))
AttributeError: 'str' object has no attribute 'decode'

Requirements installation fails

When run pip install -r requirements.txt fails:

ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
launchpadlib 1.10.13 requires testresources, which is not installed.
awscli 1.25.37 requires botocore==1.27.37, but you have botocore 1.8.50 which is incompatible.
awscli 1.25.37 requires docutils<0.17,>=0.10, but you have docutils 0.19 which is incompatible.
awscli 1.25.37 requires s3transfer<0.7.0,>=0.6.0, but you have s3transfer 0.1.13 which is incompatible.
aws-list-all 0.8.0 requires boto3>=1.15.1, but you have boto3 1.5.14 which is incompatible.

My setup:

➜ aws --version && python3 --version && lsb_release -a
aws-cli/1.25.37 Python/3.8.10 Linux/5.15.0-41-generic botocore/1.27.37
Python 3.8.10
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.4 LTS
Release:	20.04
Codename:	focal

Unhandled ResourceNotFoundException

 73% (11 of 15) |######################################################################################################################################                                                  | Elapsed Time: 0:00:15 ETA:  0:00:05Traceback (most recent call last):
  File "list_lambdas.py", line 230, in <module>
    print_lambda_list(args)
  File "list_lambdas.py", line 144, in print_lambda_list
    descending=True
  File "/Library/Python/2.7/site-packages/botocore/client.py", line 317, in _api_call
    return self._make_api_call(operation_name, kwargs)
  File "/Library/Python/2.7/site-packages/botocore/client.py", line 615, in _make_api_call
    raise error_class(parsed_response, operation_name)
botocore.errorfactory.ResourceNotFoundException: An error occurred (ResourceNotFoundException) when calling the DescribeLogStreams operation: The specified log group does not exist.

Descriptions with commas are not handled correctly

Descriptions with commas are not handled correctly, csv file gets corrupted.