How to Build an ETL App for Grafana Data in Python with CData

The rich ecosystem of Python modules lets you get to work quickly and integrate your systems more effectively. With the CData API Driver for Python and the petl framework, you can build Grafana-connected applications and pipelines for extracting, transforming, and loading Grafana data. This article shows how to connect to Grafana with the CData Python Connector and use petl and pandas to extract, transform, and load Grafana data.

With built-in, optimized data processing, the CData Python Connector offers unmatched performance for interacting with live Grafana data in Python. When you issue complex SQL queries from Grafana, the driver pushes supported SQL operations, like filters and aggregations, directly to Grafana and utilizes the embedded SQL engine to process unsupported operations client-side (often SQL functions and JOIN operations).

Connecting to Grafana Data

Connecting to Grafana data looks just like connecting to any relational data source. Create a connection string using the required connection properties. For this article, you will pass the connection string as a parameter to the create_engine function.

Start by setting the Profile connection property to the location of the Grafana Profile on disk (e.g. C:\profiles\Grafana.apip). Next, set the ProfileSettings connection property to the connection string for Grafana (see below).

Grafana API Profile Settings

In Grafana, navigate to Administration > Users and Access > Service accounts, create a service account, then click Add service account token to generate a token.

After installing the CData Grafana Connector, follow the procedure below to install the other required modules and start accessing Grafana through Python objects.

Install Required Modules

Use the pip utility to install the required modules and frameworks:

pip install petl
pip install pandas

Build an ETL App for Grafana Data in Python

Once the required modules and frameworks are installed, we are ready to build our ETL app. Code snippets follow, but the full source code is available at the end of the article.

First, be sure to import the modules (including the CData Connector) with the following:

import petl as etl
import pandas as pd
import cdata.api as mod

You can now connect with a connection string. Use the connect function for the CData Grafana Connector to create a connection for working with Grafana data.

cnxn = mod.connect("Profile=C:\profiles\Grafana.apip;ProfileSettings='Token=your_service_account_token;Domain=your_grafana_domain';")

Create a SQL Statement to Query Grafana

Use SQL to create a statement for querying Grafana. In this article, we read data from the Alert entity.

sql = "SELECT Id, Name FROM Alert WHERE State = 'alerting'"

Extract, Transform, and Load the Grafana Data

With the query results stored in a DataFrame, we can use petl to extract, transform, and load the Grafana data. In this example, we extract Grafana data, sort the data by the Name column, and load the data into a CSV file.

Loading Grafana Data into a CSV File

table1 = etl.fromdb(cnxn,sql)

table2 = etl.sort(table1,'Name')

etl.tocsv(table2,'alert_data.csv')

With the CData API Driver for Python, you can work with Grafana data just like you would with any database, including direct access to data in ETL packages like petl.

Free Trial & More Information

Download a free, 30-day trial of the CData API Driver for Python to start building Python apps and scripts with connectivity to Grafana data. Reach out to our Support Team if you have any questions.

Full Source Code

import petl as etl
import pandas as pd
import cdata.api as mod

cnxn = mod.connect("Profile=C:\profiles\Grafana.apip;ProfileSettings='Token=your_service_account_token;Domain=your_grafana_domain';")

sql = "SELECT Id, Name FROM Alert WHERE State = 'alerting'"

table1 = etl.fromdb(cnxn,sql)

table2 = etl.sort(table1,'Name')

etl.tocsv(table2,'alert_data.csv')