aws-sam-cli
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Error: 'str' object has no attribute 'decode'Bug: TITLE
Description:
unable to debug lambda locally.
Steps to reproduce:
The starter repo i started with can be found here https://github.com/mir4ef/aws-lambda-typescript-starter.
I cloned it, changed runtime to node18.x using latest container. Bellow is effort to get local debug to work.
$ sam build --use-container --build-image public.ecr.aws/sam/build-nodejs18.x:1.107.0-20240110201056
...
$ sam local invoke -d 9999 HelloWorldFunction
da@da-mbp ~/workspace/app/backend/app-aws-services master ± sam build --use-container --build-image public.ecr.aws/sam/build-nodejs18.x:1.107.0-20240110201056
Starting Build inside a container
Building codeuri: /Users/da/workspace/app/backend/app-aws-services/dist runtime: nodejs18.x metadata: {} architecture: x86_64 functions: HelloWorldFunction, MyFunctrion, MyFunc
Fetching public.ecr.aws/sam/build-nodejs18.x:1.107.0-20240110201056 Docker container image......
Mounting /Users/da/workspace/app/backend/app-aws-services/dist as /tmp/samcli/source:ro,delegated, inside runtime container
Build Succeeded
Built Artifacts : .aws-sam/build
Built Template : .aws-sam/build/template.yaml
Commands you can use next
=========================
[*] Validate SAM template: sam validate
[*] Invoke Function: sam local invoke
[*] Test Function in the Cloud: sam sync --stack-name {{stack-name}} --watch
[*] Deploy: sam deploy --guided
Running NodejsNpmBuilder:NpmPack
Running NodejsNpmBuilder:CopyNpmrcAndLockfile
Running NodejsNpmBuilder:CopySource
Running NodejsNpmBuilder:NpmInstall
Running NodejsNpmBuilder:CleanUpNpmrc
Running NodejsNpmBuilder:LockfileCleanUp
da@da-mbp ~/workspace/app/backend/app-aws-services master ± sam local invoke -d 9999 HelloWorldFunction
Invoking app/function.lambdaHandler (nodejs18.x)
Local image is up-to-date
Using local image: public.ecr.aws/lambda/nodejs:18-rapid-x86_64.
Mounting /Users/da/workspace/app/backend/app-aws-services/.aws-sam/build/HelloWorldFunction as /var/task:ro,delegated, inside runtime container
Error: 'str' object has no attribute 'decode'
Traceback:
File "click/core.py", line 1078, in main
File "click/core.py", line 1688, in invoke
File "click/core.py", line 1688, in invoke
File "click/core.py", line 1434, in invoke
File "click/core.py", line 783, in invoke
File "samcli/cli/cli_config_file.py", line 347, in wrapper
File "click/decorators.py", line 92, in new_func
File "click/core.py", line 783, in invoke
File "samcli/lib/telemetry/metric.py", line 184, in wrapped
File "samcli/lib/telemetry/metric.py", line 149, in wrapped
File "samcli/lib/utils/version_checker.py", line 42, in wrapped
File "samcli/cli/main.py", line 95, in wrapper
File "samcli/commands/local/invoke/cli.py", line 103, in cli
File "samcli/commands/local/invoke/cli.py", line 201, in do_cli
File "samcli/commands/local/lib/local_lambda.py", line 144, in invoke
File "samcli/lib/telemetry/metric.py", line 324, in wrapped_func
File "samcli/local/lambdafn/runtime.py", line 193, in invoke
File "samcli/local/lambdafn/runtime.py", line 148, in run
File "samcli/local/docker/manager.py", line 118, in run
File "samcli/local/docker/container.py", line 362, in start
An unexpected error was encountered while executing "sam local invoke".
Search for an existing issue:
https://github.com/aws/aws-sam-cli/issues?q=is%3Aissue+is%3Aopen+Bug%3A%20sam%20local%20invoke%20-%20AttributeError
Or create a bug report:
https://github.com/aws/aws-sam-cli/issues/new?template=Bug_report.md&title=Bug%3A%20sam%20local%20invoke%20-%20AttributeError
✘ da@da-mbp ~/workspace/app/backend/app-aws-services master ±
Observed result:
Error: 'str' object has no attribute 'decode'
Note :
just adding the port param causes the error
✘ $ sam local invoke HelloWorldFunction
Invoking app/function.lambdaHandler (nodejs18.x)
Local image is up-to-date
Using local image: public.ecr.aws/lambda/nodejs:18-rapid-x86_64.
Mounting /Users/da/workspace/app/backend/testDeleteMe/aws-lambda-typescript-starter/.aws-sam/build/HelloWorldFunction as /var/task:ro,delegated, inside runtime container
START RequestId: 9004258e-7a62-4bbc-a41f-f85c0bcf6eeb Version: $LATEST
END RequestId: 000a6707-d6cd-485d-a538-ad6dfd5c156b
REPORT RequestId: 000a6707-d6cd-485d-a538-ad6dfd5c156b Init Duration: 0.79 ms Duration: 927.32 ms Billed Duration: 928 ms Memory Size: 128 MB Max Memory Used: 128 MB
{"statusCode": 200, "body": "{\"message\":\"hello world\",\"version\":\"$LATEST\"}"}. <<<<< SUCCESS
✘ $ sam local invoke -d 9999 HelloWorldFunction <<<<< with port
Invoking app/function.lambdaHandler (nodejs18.x)
Local image is up-to-date
Using local image: public.ecr.aws/lambda/nodejs:18-rapid-x86_64.
Mounting /Users/da/workspace/app/backend/testDeleteMe/aws-lambda-typescript-starter/.aws-sam/build/HelloWorldFunction as /var/task:ro,delegated, inside runtime container
Error: 'str' object has no attribute 'decode'
Traceback:
File "click/core.py", line 1078, in main
File "click/core.py", line 1688, in invoke
File "click/core.py", line 1688, in invoke
File "click/core.py", line 1434, in invoke
File "click/core.py", line 783, in invoke
File "samcli/cli/cli_config_file.py", line 347, in wrapper
File "click/decorators.py", line 92, in new_func
File "click/core.py", line 783, in invoke
File "samcli/lib/telemetry/metric.py", line 184, in wrapped
File "samcli/lib/telemetry/metric.py", line 149, in wrapped
File "samcli/lib/utils/version_checker.py", line 42, in wrapped
File "samcli/cli/main.py", line 95, in wrapper
File "samcli/commands/local/invoke/cli.py", line 103, in cli
File "samcli/commands/local/invoke/cli.py", line 201, in do_cli
File "samcli/commands/local/lib/local_lambda.py", line 144, in invoke
File "samcli/lib/telemetry/metric.py", line 324, in wrapped_func
File "samcli/local/lambdafn/runtime.py", line 193, in invoke
File "samcli/local/lambdafn/runtime.py", line 148, in run
File "samcli/local/docker/manager.py", line 118, in run
File "samcli/local/docker/container.py", line 362, in start
An unexpected error was encountered while executing "sam local invoke".
Search for an existing issue:
https://github.com/aws/aws-sam-cli/issues?q=is%3Aissue+is%3Aopen+Bug%3A%20sam%20local%20invoke%20-%20AttributeError
Or create a bug report:
https://github.com/aws/aws-sam-cli/issues/new?template=Bug_report.md&title=Bug%3A%20sam%20local%20invoke%20-%20AttributeError
Expected result:
HelloWorldFunction should have started for debuting ws; something like this.
Debugger listening on ws://0.0.0.0:9999/a47891d0-d0d3-419e-8123-caf8baf4fbbc
and then i should have been able to connect to it from VSCode debugger
.vscode/launch.json looks like this:
{
"version": "0.2.0",
"configurations": [
{
"name": "Attach to SAM CLI",
"type": "node",
"request": "attach",
"address": "localhost",
"port": 9999,
"localRoot": "${workspaceFolder}/backend/app-aws-services/src/",
"remoteRoot": "/var/task",
"protocol": "inspector",
"stopOnEntry": false
}
]
}
Additional environment details (Ex: Windows, Mac, Amazon Linux etc)
- OS: mac
-
sam --version: "1.107.0", - AWS region: us-east-2
{
"version": "1.107.0",
"system": {
"python": "3.8.13",
"os": "macOS-13.4-arm64-arm-64bit"
},
"additional_dependencies": {
"docker_engine": "24.0.7",
"aws_cdk": "Not available",
"terraform": "Not available"
},
"available_beta_feature_env_vars": [
"SAM_CLI_BETA_FEATURES",
"SAM_CLI_BETA_BUILD_PERFORMANCE",
"SAM_CLI_BETA_TERRAFORM_SUPPORT",
"SAM_CLI_BETA_RUST_CARGO_LAMBDA"
]
}
Add --debug flag to command you are running
Hi @daskabe, can you check if this issue helps in attaching a debugger manually? You can also check out the AWS toolkits extension docs which abstracts away all the setup. Let us know if you still have questions.
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