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instrumentation/github.com/aws/aws-lambda-go/swolambda/README.md
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| # Instrumentation for AWS Lambda | ||
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| This package instruments the AWS Lambda `Handler` interface. | ||
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| ## Usage | ||
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| ### Add the `Otelcol` extension layer | ||
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| Follow the [SolarWinds Observability | ||
| documentation](https://documentation.solarwinds.com/en/success_center/observability/content/intro/services/aws-lambda-overview.htm) | ||
| to add the Otelcol extension layer. | ||
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| **Note**: Unlike other languages, Golang does not require an additional | ||
| extension, so the "Instrumentation extension" section on that page does not | ||
| apply. | ||
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| ### Modify your code | ||
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| First, install the dependency: | ||
| ```shell | ||
| go get -u github.com/solarwinds/apm-go/instrumentation/github.com/aws/aws-lambda-go/swolambda | ||
| ``` | ||
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| Then, wrap your handler with `swolambda.WrapHandler`: | ||
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| ```go | ||
| package main | ||
| import ( | ||
| "context" | ||
| "github.com/aws/aws-lambda-go/lambda" | ||
| "github.com/solarwinds/apm-go/instrumentation/github.com/aws/aws-lambda-go/swolambda" | ||
| ) | ||
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| // Example incoming type | ||
| type MyEvent struct {} | ||
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| // This is an example handler, yours may have a different signature and a | ||
| // different name. It will work ass long as it adheres to what the Lambda SDK | ||
| // expects. (See "Valid handler signatures"[0]) | ||
| // [0] https://docs.aws.amazon.com/lambda/latest/dg/golang-handler.html | ||
| func ExampleHandler(ctx context.Context, event *MyEvent) (string, error) { | ||
| return "hello world", nil | ||
| } | ||
| func main() { | ||
| // We wrap our handler here and pass the result to `lambda.Start` | ||
| lambda.Start(swolambda.WrapHandler(ExampleHandler)) | ||
| } | ||
| ``` | ||
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| Now that you've instrumented your code, you should be able to send requests and | ||
| see the resulting metrics and traces in SWO. |
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