IOMETE Airflow Plugin

This Plugin helps to trigger/run Spark Jobs created in IOMETE platform.

Requirements

• Apache Airflow >=2.10.5, <4.0.0
• Python 3.10 – 3.13

Installation

This plugin could be easily installed with pip. Just run the following in your aiflow server:

pip install iomete-airflow-plugin

Restart you server and check the plugins page on Airflow's admin panel to make sure plugin loaded successfully.

Usage

Pass your IOMETE connection details directly to IometeOperator. A single Airflow instance can trigger jobs against multiple IOMETE clusters by passing different host/domain/access_token values per task.

from airflow import DAG
from iomete_airflow_plugin.iomete_operator import IometeOperator

dag = DAG(dag_id="...", default_args={}, schedule=None)

task = IometeOperator(
    task_id="random_task_id",
    job_id="1b0fc29b-5491-4c0a-94ea-48e304c3c72e",  # Spark Job ID or Name in IOMETE platform.
    host="https://YOUR.iomete.host",
    domain="YOUR_DOMAIN",
    access_token="YOUR_ACCESS_TOKEN",
    dag=dag,
)

To avoid repeating credentials on every task, put them in the DAG's default_args:

dag = DAG(
    dag_id="...",
    default_args={
        "host": "https://YOUR.iomete.host",
        "domain": "YOUR_DOMAIN",
        "access_token": "YOUR_ACCESS_TOKEN",
    },
    schedule=None,
)

Loading the access token from an Airflow Variable

If you store tokens as Airflow Variables (one per target IOMETE cluster), pass the Variable name via access_token_variable instead of the raw token. The plugin calls Variable.get at task-execute time, so different tasks can target different IOMETE clusters by naming different Variables. We recommend prefixing your Variable names with iomete_ to keep them grouped in Admin → Variables.

# Define an Airflow Variable named "iomete_prod_token" in Admin → Variables, then:
task = IometeOperator(
    task_id="run_on_prod",
    job_id="...",
    host="https://prod.iomete.com",
    domain="prod",
    access_token_variable="iomete_prod_token",
    dag=dag,
)

Specify either access_token or access_token_variable, never both. If the resolved Variable is unset or empty at execute time the task fails with a clear error.

Parameters

host, domain, and access_token_variable are Jinja-templatable. access_token is not templatable: Airflow persists rendered template fields to its metadata database and exposes them in the UI, so templating raw tokens would leak them. Use access_token_variable to template the lookup name instead.

Migrating from 2.x

The 2.x plugin read connection details from four Airflow Variables (iomete_host, iomete_access_token, iomete_domain, iomete_host_verify) and exposed a variable_prefix parameter to namespace them. Both are gone in 3.0.0. Pass host, domain, and either access_token or access_token_variable (and optionally host_verify) directly to IometeOperator. If you previously used variable_prefix, set access_token_variable to the full Airflow Variable name instead (e.g. access_token_variable="iomete_prod_token").

Resources

For more information check:

1. Github repository
2. IOMETE Docs