Data Pipeline Tools

Example: Setting up a simple data flow in NiFi

1. Download and install Apache NiFi from the official website.

2. Start the NiFi server by running the following command:

3. Open the NiFi UI in your browser at http://localhost:8080/nifi.

4. Create a simple data flow by dragging and dropping processors, connecting them, and configuring the required properties.

Example: Creating a basic DAG in Airflow

1. Install Apache Airflow using pip:

2. Initialize the Airflow database:

3. Create a new DAG file in the dags directory:

from airflow import DAG
from datetime import datetime
from airflow.operators.dummy_operator import DummyOperator

default_args = {
    'owner': 'airflow',
    'depends_on_past': False,
    'start_date': datetime(2023, 1, 1),
    'email_on_failure': False,
    'email_on_retry': False,
}

dag = DAG(
    'simple_dag',
    default_args=default_args,
    description='A simple tutorial DAG',
    schedule_interval='@daily',
)

start = DummyOperator(
    task_id='start',
    dag=dag,
)

end = DummyOperator(
    task_id='end',
    dag=dag,
)

start >> end
                    

4. Start the Airflow web server and scheduler:

5. Open the Airflow UI in your browser at http://localhost:8080 to monitor your DAG.

Example: Creating a simple Luigi task

1. Install Luigi using pip:

2. Create a simple Luigi task in a Python file:

import luigi

class MyTask(luigi.Task):
    def output(self):
        return luigi.LocalTarget('my_output.txt')

    def run(self):
        with self.output().open('w') as f:
            f.write('Hello, Luigi!')

if __name__ == '__main__':
    luigi.run()
                    

3. Run the task using the following command:

4. Check the output file my_output.txt for the result.

Example: Setting up a Kafka producer and consumer

1. Download and install Apache Kafka from the official website.

2. Start the ZooKeeper and Kafka server:

3. Create a topic named test:

4. Start a Kafka producer:

5. Start a Kafka consumer:

6. Send messages from the producer and see them appear in the consumer.