Cost Monitoring
===============

**2 probes**

Estimates Azure storage costs based on ADLS Gen2 / Blob Storage inventory
data.  Groups costs by filesystem, directory, or access tier and flags
datasets where estimated monthly cost exceeds a configurable threshold.

Configuration
-------------

.. code-block:: yaml

   sources:
     - type: cost
       storage_report: output/adls_gen2.metadata.paths.json
       price_per_gb_hot: 0.0184     # EUR / GB / month (Hot tier)
       price_per_gb_cool: 0.01      # EUR / GB / month (Cool tier)
       price_per_gb_archive: 0.002  # EUR / GB / month (Archive tier)
       alert_threshold_eur: 50      # alert if monthly cost > threshold

Probes
------

.. list-table::
   :header-rows: 1
   :widths: 40 60

   * - Probe
     - Description
   * - ``cost.cost.storage_estimate``
     - Estimate monthly storage cost grouped by filesystem and tier
   * - ``cost.cost.threshold_alert``
     - Flag paths where estimated monthly cost exceeds threshold

Usage
-----

.. code-block:: bash

   metapod run "cost.cost.*" --config config.yaml

Output
------

.. code-block:: json

   {
     "probe": "cost.cost.storage_estimate",
     "source": "cost",
     "collected_at": "2026-03-31T08:00:00Z",
     "results": [
       {
         "filesystem": "datalake",
         "path": "landing/",
         "size_gb": 248.5,
         "tier": "Hot",
         "estimated_monthly_eur": 4.57
       }
     ]
   }