| // Copyright 2018 Open Networking Foundation |
| // |
| // Licensed 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 main |
| |
| import ( |
| "os" |
| "os/signal" |
| "sync" |
| |
| "github.com/Shopify/sarama" |
| "gerrit.opencord.org/kafka-topic-exporter/common/logger" |
| ) |
| |
| func topicListener(topic *string, master sarama.Consumer, wg sync.WaitGroup) { |
| logger.Info("Starting topicListener for [%s]", *topic) |
| defer wg.Done() |
| consumer, err := master.ConsumePartition(*topic, 0, sarama.OffsetOldest) |
| if err != nil { |
| logger.Error("topicListener panic") |
| panic(err) |
| } |
| signals := make(chan os.Signal, 1) |
| signal.Notify(signals, os.Interrupt) |
| doneCh := make(chan struct{}) |
| go func() { |
| for { |
| select { |
| case err := <-consumer.Errors(): |
| logger.Error("%s", err) |
| case msg := <-consumer.Messages(): |
| logger.Debug("Message on %s: %s", *topic, string(msg.Value)) |
| export(topic, msg.Value) |
| case <-signals: |
| logger.Warn("Interrupt is detected") |
| doneCh <- struct{}{} |
| } |
| } |
| }() |
| <-doneCh |
| } |