The final step would be to load this data in the AWS S3 bucket and for that, we would be using the boto3 library in python. We would be removing the unnecessary columns as the transformation step : The next step would be to transform this data. Xcom_pull is used to pull the data from task storage on the task instance. Xcom_push is used to push the data to task storage on the task instance. They can only pass small amounts of data or API requests. XComs stands for cross-communication which is a mechanism where tasks communicate with each other. In the code snippet, ti stands for task instance and it is used to call xcoms_push and xcoms_pull. The first step would be to load the required libraries in the python file :Ĭreate a function get_stackoverflow_data() and get the data using the requests library Loading the data to the Amazon S3 bucketįetching the data from the StackOverflow API endpoint.Fetching the data from the StackOverflow API endpoint.Steps to create the airflow DAG in python : Write Airflow DAG in python to create a data pipeline This data would be further transformed using pandas and we shall see it in the next few steps. You can also look for any such free APIs and it does not require any access keys or credentials. We would extract the data for “ What are the top trending tags appearing in StackOverflow this month?”The API for getting the question answered can be found here:Īpi./2.3/tags?order=desc&a.įor simplification, we have taken this API as it has a very less volume of data present. The data which we would be using for ETL would be Stackoverflow API which can be found here:. This would successfully create a bucket and you can configure other details accordingly. Enter a unique bucket name following the chosen region and create a bucket. In the S3 management console, click on Create Bucket.Ĥ. Select the AWS S3 Scalable storage in the cloud.ģ. Log in to the AWS and in the management console search for S3Ģ. To create your first Amazon S3 bucket, you can follow the steps here:ġ. S3 also provides us with unlimited storage and we don’t need to worry about the underlying infrastructure. S3 stands for Simple Storage Device and is used to store the data as object-based storage. How to easily build ETL Pipeline using Python and Airflow? Amazon S3 bucket To set up Airflow and know more about it, you can check out this blog: Airflow makes use of Directed Acyclic Graph (DAGs) in such a way that these tasks can be executed independently. Workflow is a sequence of tasks/work that are started or scheduled or triggered by an event. Airflow is written in Python and is used to create a workflow. Loading Operation: Loading the transformed data to the AWS S3 bucketĪpache Airflow is an open-source workflow management platform used for creating, scheduling, and monitoring workflows or data pipelines by writing code.
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