Getting Started with DataOps

Overview

• Definition
• Principle Design of DataOps
• Architecture Design
  • How StringX will being used in data quality check gates?
• Setup on Local Machine
• Folder Structure

Definition

• DataOps is a set of practices, processes and technologies that combines an integrated and process-oriented perspective on data.

• Automation and methods from agile software engineering to improve quality, speed, and collaboration and especially to promote a culture of continuous improvement in the area of data analytics.

• Leverage the Data Quality Dimensions: Completeness, Accuracy, Consistency, Uniqueness, Timeliness, Validity. The Entities (Table, Dataset, Columns, Rows) are being to verify with expected results.

Principle Design of DataOps

1. Making sure data is properly verified
2. Applying Agile Processing (DevOps)
3. Testing with data event driven
4. Building with Micro-services patterns
5. Supporting Scaling

Architecture Design

This is service design

Leverage Micro-services, data flows of data ops processing will be explained in the following:

1. Trigger will send a message request to Backend Service
2. Tracking message request and get configuration
3. Send request to DataOps Service, DataOps is an containers pod with Custom Images which has registered on Images repo
4. Running dbt command on target database
5. Send results and acknowledge message to Backend Service, result will be stored in StringX internal database

How StringX will being used in data quality check gates?

By performing quality check on the table defined in the configuration table, we can determine which engineering rules and/or business rules will be applied to the table.

There two three different set of configurations:

• Right Perform Data Quality Check
• Trigger external DataOps Service for async operation quality checks

You can monitor the quality, data models using dbt (see in the capture)

Setup on Local Machine

By self-creating the application and running quality tests with StringX Application.

Creating container services for Data Operation with sample structure of Docker Image.

# Stage 1: Build the dbt container
FROM ghcr.io/dbt-labs/dbt-postgres AS dbt-builder

# Add any additional dependencies needed for dbt here

COPY stringx /usr/app/dbt

WORKDIR /usr/app/dbt

# Build dbt
# RUN dbt deps
# RUN dbt seed
# RUN dbt run

# Stage 2: Build the Flask API container
FROM python:3.8 AS api-builder

# Add any additional dependencies needed for your Flask API here

COPY requirements.txt .

RUN pip install -r requirements.txt

COPY api /usr/app/api

WORKDIR /usr/app/api

ENV DBT_PROFILES_DIR=/usr/app/dbt/
ENV DBT_PROJECT_DIR=/usr/app/dbt/


EXPOSE 5001
EXPOSE 8001

# Stage 3: Create the final image by combining dbt and Flask API
FROM api-builder AS final-image

COPY --from=dbt-builder /usr/app/dbt /usr/app/dbt

WORKDIR /usr/app/api

CMD ["python", "app.py"]

# docker build . -t dbt-data-ops:latest --no-cache
# docker run -p 127.0.0.1:5001:5001 --name dbt-dataops-service dbt-data-ops:latest

Create container and start service using below script

echo "start to create a container"
docker ps

echo "clear up container"
docker stop dbt-dataops-service
docker rm -f dbt-dataops-service

docker build . -t dbt-data-ops:latest --no-cache

echo "start to create container"
docker run -p 127.0.0.1:5001:5001 -p 127.0.0.1:8001:8001 --name dbt-dataops-service dbt-data-ops:latest
echo "verify docker container"
docker ps

Using Postman to test API with sample payloads

Notes: Run dbt docs generate/serve to generate docs and dbt portal.

Folder Structure

.
├── Dockerfile
├── README.md
├── api
├── app.py
├── requirements.txt
├── sending_kafka_messages.py
├── start-service.sh
└── stringx

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