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consumer.py
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from kafka import KafkaConsumer
from kafka import TopicPartition
import json
import sys
import base64
import time
import os
drive_name = "/dev/sda2"
def get_write_speed():
st_to_write="faferfvjhgrf,bu,ferfreuu4fr37fbv,e8qlf83l8rqT@6ikg"
start_timer=time.time()
try:
f=open('wrtcheck.txt','w')
for k in range(0,100000):
for q in st_to_write:
f.write(q)
f.close()
end_timer=time.time()
size=os.stat("wrtcheck.txt")
d=size.st_size//(end_timer-start_timer)
os.remove('wrtcheck.txt')
d=int(d)
return (d)
except:
return "error"
bootstrap_server = '10.70.33.117:9092'
# Define the partition numbers you want to consume from
partition_numbers = [0] # Change Plzz. [0,1] [1,2] [0,2]
# drive_name = "C:" # for windows
disk_speed = get_write_speed()
# Determine the topic based on disk_speed
if disk_speed >= 1000000:
topic = 'hello_world.'
else:
topic = 'topic_2'
# Initialize consumer variable and manually assign the partitions
consumer = KafkaConsumer(
bootstrap_servers=bootstrap_server,
value_deserializer=lambda m: json.loads(m.decode('utf-8')),
auto_offset_reset='earliest',
group_id="Consumer_Group_1" # Change Plzz...
)
# Manually assign the partitions to consume from based on partition_numbers
partitions_to_assign = [TopicPartition(topic, partition_number) for partition_number in partition_numbers]
consumer.assign(partitions_to_assign)
data_dir = os.path.join(os.getcwd(), "data")
# Read and print messages from the assigned partitions
for msg in consumer:
file_name = msg.value['name']
img_data = base64.b64decode(msg.value['img'])
# Store metadata in a dictionary
metadata = {
'filename': file_name,
'topic': topic,
'consumer_group': "Consumer_Group_1", # Change Plzzz.
'partition_number': msg.partition
}
with open(os.path.join(data_dir, file_name), mode='wb') as file:
file.write(img_data)
# Print metadata and a message indicating the file is saved
print('Metadata:', metadata)
# Terminate the script
sys.exit()