benthos-cloudevents-fluffycore

README

benthos-cloudevents-fluffycore

Benthos plugin that processes cloudevents and sends them downstream to a gprc handler.

Build the proto

grpc.io
Transcode Ref
custom protoc plugin

go install github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-grpc-gateway@latest
go install github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-openapiv2@latest
go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
go install github.com/fluffy-bunny/fluffycore/protoc-gen-go-fluffycore-di/cmd/protoc-gen-go-fluffycore-di@latest

protoc --go_out=. --go_opt=paths=source_relative ./pkg/proto/cloudevents/cloudevents.proto  

protoc --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative --go-fluffycore-di_out=.  --go-fluffycore-di_opt=paths=source_relative ./pkg/proto/cloudeventprocessor/cloudeventprocessor.proto 

protoc --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative --go-fluffycore-di_out=.  --go-fluffycore-di_opt=paths=source_relative ./pkg/proto/kafkacloudevent/kafkacloudevent.proto 

Grpc References

auth examples

Docker

 docker build --file .\build\Dockerfile.processor . --tag fluffybunny.benthos.processor

 docker build --file .\build\Dockerfile.benthos . --tag fluffybunny.benthos.benthos

 docker-compose up

Services

Kafka UI

Kafka-ui

KafkaCloudEventService - grpc

grpc://localhost:9050

This is service to submit a cloud-event to kafka.

Request

{
    "batch": {
        "events": [
            {
                "attributes": [
                    {
                        "value": {
                            "ce_string": "test"
                        },
                        "key": "testkey"
                    }
                ],
                "spec_version": "1.0",
               
                "text_data": "{\"a\":\"b\"}",
                
                "id": "1234",
                "type": "my.type",
                "source": "//my/source"
            }
        ]
    }
}

Response

{}

CloudEventProcessor - grpc

grpc://localhost:9050

This service receives cloud-events as batches via out custom benthos output handler.

IMPORTANT: This is an all or nothing process. It sends the messages in batches. There are good and bad and the processor needs to decide what it wants to do with the bad messages. In some cases the entire batch is bad at the

Viewer

I use docker desktop and look at the logs. My downstream processor just logs what it got and returns a nil.