Added a test which contains filtering function (it'll filter notices within the array of strings)

Made producer more safe and highthroughput.

Added old notices remover in producer.

Added a little bit of resting time between consuer polling.

1시간마다 모든 공지를 불러 {"TITLE": "제목", "DATE": "올린 날", "LINK": "http 주소", "WRITER": "글쓴이"}를 json 형태로 저장한다.

이 json 파일이나 새로운 공지가 있으면 기존 json과 비교해서 새로운 데이터를 Consumer로 보내고, Consumer는 새로운 데이터를 받으면, Slack API를 이용해, "#아주대" 채널에 공지를 올려준다.

마지막 파싱 시간도 기록해 종료 후 다시 불러도 1시간이 지나지 않으면 파싱하지 않는다.

결과)
Last parsing: 1972-12-01 07:00:00
Trying to parse new posts...
Sending a new post...: 12179
...

Last parsing: 2020-12-04 19:11:42.839219
Trying to parse new posts...
No new posts yet...
Resting 1 hour...
...
Last parsing: 2020-12-06 11:55:35.386262
Wait for 3494 seconds to sync new posts.

this producer reads all messages from "#general", in every 5 seconds (this will cause ratelimited)

and if messages contain a word "bug", it will automatically sends "USERNAME" and "MESSAGE" to Kafka consumer.

And the consumer will leave a message in "#kafka" channel saying "USER found a bug ..."

modified version of an official confluent example.

topic id: SLACK-KAFKA

this will automatically posts a message to your specified channel in Slack, if someone leaves a bad review

(for now, you can just send a json data to test from CLI, see the README file.)