Created
March 20, 2020 10:49
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| import click | |
| import csv | |
| import json | |
| import requests | |
| from io import StringIO | |
| from datetime import datetime | |
| from kafka import KafkaConsumer | |
| import atexit | |
| def flush(endpoint, datasource_name, token, rows): | |
| try: | |
| csv_chunk = StringIO() | |
| writer = csv.writer(csv_chunk, delimiter=',', quotechar='"', quoting=csv.QUOTE_MINIMAL) | |
| writer.writerows(rows) | |
| except: | |
| print(f"Failed to process rows as block, row-by-row processing fallback") | |
| csv_chunk = StringIO() | |
| writer = csv.writer(csv_chunk, delimiter=',', quotechar='"', quoting=csv.QUOTE_MINIMAL) | |
| for r in rows: | |
| try: | |
| writer.writerow(r) | |
| except: | |
| print(f"Failed to process row =", r) | |
| append_url = f'{endpoint}/v0/datasources?mode=append&name={datasource_name}' | |
| response = requests.post(append_url, | |
| data=csv_chunk.getvalue(), | |
| headers={'Authorization': f'Bearer {token}'} | |
| ) | |
| print(f"[{datetime.now()}] status={response.status_code} datasource={datasource_name}, rows={len(rows)}") | |
| @click.command() | |
| @click.argument('topic') | |
| @click.argument('datasource_name') | |
| @click.option('--token', envvar='TOKEN') | |
| @click.option('--endpoint', default='https://api.tinybird.co') | |
| def consume(topic, datasource_name, token, endpoint): | |
| consumer = KafkaConsumer(topic, value_deserializer=json.loads, group_id=f"tb_{datasource_name}") | |
| rows = [] | |
| atexit.register(lambda: flush(endpoint, datasource_name, token, rows)) | |
| for msg in consumer: | |
| rows.append(msg.value) | |
| if len(rows) >= 20000: | |
| flush(endpoint, datasource_name, token, rows) | |
| rows = [] | |
| if __name__ == '__main__': | |
| consume() |
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