https://github.com/kevinmichaelchen/aws-lambda-go-otel-poc

Proof of Concept using AWS Lambda, Go, OpenTelemetry (OTel), as well as Tailcall as an alternative to AppSync Serverless GraphQL
https://github.com/kevinmichaelchen/aws-lambda-go-otel-poc

aws aws-lambda-go go graphql lambda opentelemetry otel tailcall

Last synced: 1 day ago
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Proof of Concept using AWS Lambda, Go, OpenTelemetry (OTel), as well as Tailcall as an alternative to AppSync Serverless GraphQL

• Host: GitHub
• URL: https://github.com/kevinmichaelchen/aws-lambda-go-otel-poc
• Owner: kevinmichaelchen
• Created: 2024-06-09T16:28:19.000Z (4 months ago)
• Default Branch: main
• Last Pushed: 2024-06-10T02:19:15.000Z (4 months ago)
• Last Synced: 2024-09-21T11:02:40.860Z (6 days ago)
• Topics: aws, aws-lambda-go, go, graphql, lambda, opentelemetry, otel, tailcall
• Language: Go
• Homepage:
• Size: 19.5 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# aws-lambda-go-otel-poc

Proof of concept using [aws-lambda-go][aws-lambda-go] and [OpenTelemetry][otel].

This may interest you if you use AWS, Lambdas, Golang, and OpenTelemetry … or 

if you're looking to emulate [AppSync Serverless GraphQL][appsync] locally and 

do not wish to pay for a [LocalStack][localstack] license.

[appsync]: https://aws.amazon.com/appsync/

[aws-lambda-go]: https://github.com/aws/aws-lambda-go

[localstack]: https://docs.localstack.cloud/user-guide/aws/appsync/

[otel]: https://opentelemetry.io/

## Getting started

### Step 0: Prerequisites

All you need is [Docker][docker] and [pkgx][pkgx].

[docker]: https://www.docker.com/

[pkgx]: https://pkgx.sh/

### Step 1: Run everything

```shell

pkgx task@latest run

```

### Step 2: Invoking the Lambda

#### (With the CLI)

```shell

pkgx awslocal@latest \

  lambda invoke \

    --function-name my-lambda \

    --cli-binary-format raw-in-base64-out \

    --payload '{"body": "{\"id\": \"10\"}" }' \

    output.txt

```

#### (With HTTP)

```shell

pkgx http \

  http://localhost:4566/2015-03-31/functions/my-lambda/invocations \

  id="4"

```

#### (With GraphQL)

```graphql

mutation {

  invokeLambda(input: {id: "1"}) {

    id

  }

}

```

### Step 3: Viewing the trace

Open the [Jaeger UI][jaeger-ui].

[jaeger-ui]: http://localhost:16686

## Miscellaneous

### Remaining Questions

- **ADOT**: Do we need to use the AWS Distro of OTel Collector?

## Environment Variables

The default OTel env vars should be fine.

See their [“OTLP Exporter Configuration” guide][guide].

[guide]: https://opentelemetry.io/docs/languages/sdk-configuration/otlp-exporter/