https://github.com/mashiike/lambdamiddleware
Useful lambda handler middleware repository
https://github.com/mashiike/lambdamiddleware
Last synced: 3 months ago
JSON representation
Useful lambda handler middleware repository
- Host: GitHub
- URL: https://github.com/mashiike/lambdamiddleware
- Owner: mashiike
- License: mit
- Created: 2022-09-01T06:42:55.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2023-05-22T21:00:18.000Z (about 2 years ago)
- Last Synced: 2024-06-20T06:32:09.526Z (11 months ago)
- Language: Go
- Size: 27.3 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 5
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
Awesome Lists containing this project
README
# lambdamiddleware
Useful lambda handler middleware repository
```go
package main
import (
"context"
"encoding/json"
"log"
"github.com/mashiike/lambdamiddleware"
)
func main() {
s := lambdamiddleware.NewStack(
func(next lambda.Handler) lambda.Handler {
return lambdamiddleware.HandlerFunc(
func(ctx context.Context, payload []byte) ([]byte, error) {
fmt.Println("[start middleware1]")
output, err := next.Invoke(ctx, payload)
fmt.Println("[end middleware1]")
return output, err
},
)
},
)
handler := s.Then(func(ctx context.Context, event json.RawMessage) error {
fmt.Println("[handler]", string(event))
return nil
})
lambda.Start(handler)
}
```
### Parameters And Secrets Extention Hepler Middleware
helper middleware for https://docs.aws.amazon.com/systems-manager/latest/userguide/ps-integration-lambda-extensions.html
```go
package main
import (
"context"
"encoding/json"
"log"
"os"
"strings"
"github.com/aws/aws-lambda-go/lambda"
"github.com/mashiike/lambdamiddleware"
)
type ssmContextKey string
func main() {
paramsAndSecrets, err := lambdamiddleware.ParametersAndSecrets(&lambdamiddleware.ParametersAndSecretsConfig{
Names: strings.Split(os.Getenv("SSMNAMES"), ","),
ContextKeyFunc: func(key string) interface{} { return ssmContextKey(key) },
EnvPrefix: "SSM_",
SetEnv: true,
})
if err != nil {
log.Fatalln(err)
}
lambda.Start(lambdamiddleware.NewStack(paramsAndSecrets).Then(
func(ctx context.Context, payload json.RawMessage) (interface{}, error) {
return map[string]interface{}{
"env_foo": os.Getenv("SSM_FOO"),
"env_bar": os.Getenv("SSM_BAR"),
"foo": ctx.Value(ssmContextKey("/lambdamiddleware-examples/foo")),
"bar": ctx.Value(ssmContextKey("/lambdamiddleware-examples/bar")),
"tora": ctx.Value(ssmContextKey("/lambdamiddleware-examples/tora")),
}, nil
},
))
}
```
see deteils [exampels/parameters-and-secrets](_examples/parameters-and-secrets)
## LICENSE
MIT