redis-stream-python/consumergroup.py

44 lines
1.2 KiB
Python

import json
import typer
import random
import time
from walrus import Database
from enum import Enum
BLOCK_TIME = 5000
STREAM_KEY = "GAME_RECORD_STREAM"
app = typer.Typer()
class StartFrom(str, Enum):
beginning = "0"
latest = "$"
@app.command()
def start(group_id, consumer_id: str, start_from: StartFrom = StartFrom.latest):
rdb = Database(db=8)
cg = rdb.consumer_group(group_id, [STREAM_KEY], consumer=consumer_id)
cg.create() # Create the consumer group. Default starts from the latest
if start_from == StartFrom.beginning:
cg.set_id(start_from)
while True:
print("Reading stream...")
streams = cg.read(1, block=BLOCK_TIME)
for stream_id, messages in streams:
for message_id, message in messages:
try:
print(f"processing {stream_id}::{message_id}::{message}")
payload = json.loads(message[b"data"])
cg.game_record_stream.ack(message_id)
except:
print(f"Error occured in processing {message_id}")
pass
if __name__ == "__main__":
app()