Go goodies for AWS Lambda
The main features of this module are the various wrappers around different AWS Lambda events, for example:
Other utilities:
- Must provides
Must
, Must0
, Must2
, etc. to
reduce typing out if a, err := someFunction(); err != nil
.
- DynamoDB needs such as modeling version attribute, timestamps, utilities around making GetItem,
PutItem, UpdateItem, and DeleteItem requests.
- Metrics measures arbitrary counters, timings, properties, and produce a JSON message describing
about those metrics.
- Parse or log Smithy errors.
The module is very opinionated about how things are done because they work for me, but I'm always looking for feedback
and suggestions.
Getting Started
The root module exposes a generic wrapper that attaches a metrics instance to the context:
# Download build.py to make it easier to build and update Lambda functions.
curl --proto '=https' -fo build.py https://raw.githubusercontent.com/nguyengg/golambda/main/build.py
package main
import (
"context"
"github.com/aws/aws-lambda-go/events"
"github.com/nguyengg/golambda"
"github.com/nguyengg/golambda/logsupport"
)
func main() {
golambda.StartHandlerFunc(func(ctx context.Context, request events.LambdaFunctionURLRequest) (events.LambdaFunctionURLResponse, error) {
// will set LambdaContext.AwsRequestID to log prefix and reset upon completion.
defer logsupport.SetUpGlobalLogger(ctx)()
return events.LambdaFunctionURLResponse{
StatusCode: 200,
Body: "hello, world!",
}, nil
})
}