igalshilman commented on a change in pull request #12: URL: https://github.com/apache/flink-statefun-playground/pull/12#discussion_r697299799
########## File path: go/showcase/pkg/showcase/part3/egress.go ########## @@ -0,0 +1,67 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package part3 + +import "github.com/apache/flink-statefun/statefun-sdk-go/v3/pkg/statefun" + +// EgressFn +// Showcase Part 3: Sending messages to egresses +// +// ============================ +// +// To let your StateFun application interact with the outside world, functions may write messages +// to egresses. This function demonstrates sending messages to an Apache Kafka or AWS Kinesis +// egress, which is currently our most commonly used egresses that are natively supported by StateFun. +// +// ============================ +// +// Next, we recommend learning about StateFun's state storage management and how to access stored +// values. Head over to StateStorageFn. +func EgressFn(ctx statefun.Context, _ statefun.Message) error { + ctx.SendEgress(statefun.KafkaEgressBuilder{ + Target: KafkaEgressTypeName, + Topic: "my-kafka-topic", + Key: "my-key", + Value: "hello world!", Review comment: can you please replace this with `Value: []byte("hello world!")` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
