Remove MAC settings profile reference on end device delete

[halimi]

Summary

References: #7380

Remove the MAC settings profile reference (decrease the counter) when deleting an end device with MAC settings profile.

Changes

• Remove MAC settings profile reference on end device delete
• Remove MAC settings profile reference on batch of end devices delete

Testing

Steps

• Create a MAC settings profile
• Create a device with MAC settings profile
• Check that the MAC settings profile end_devices_count shows 1
• Delete the device
• Check that the MAC settings profile end_devices_count shows 0

Results

• Create a MAC settings profile

POST http://localhost:1885/api/v3/ns/applications/myapp/mac_settings_profiles

body:
{
  "mac_settings_profile": {
    "ids": {
      "application_ids": {
        "application_id": "myapp"
      },
      "profile_id": "mac24"
    },
    "mac_settings": {
      "rx2_data_rate_index": 0,
      "rx2_frequency": "869525000"
    }
  }
}

• Create a device with MAC settings profile

POST http://localhost:1885/api/v3/ns/applications/myapp/devices

body:
{
  "end_device": {
    "version_ids": {
      "brand_id": "the-things-industries",
      "model_id": "generic-node-sensor-edition",
      "hardware_version": "1.1",
      "firmware_version": "1.0",
      "band_id": "EU_863_870"
    },
    "frequency_plan_id": "EU_863_870_TTN",
    "supports_join": true,
    "lorawan_version": "MAC_V1_0_3",
    "lorawan_phy_version": "PHY_V1_0_3_REV_A",
    "ids": {
      "join_eui": "1122334455667700",
      "dev_eui": "0606554433221107",
      "device_id": "test-dev15",
      "application_ids": {
        "application_id": "myapp"
      }
    },
    "mac_settings_profile_ids": {
      "application_ids": {
        "application_id": "myapp"
      },
      "profile_id": "mac24"
    }
  },
  "field_mask": {
    "paths": [
      "version_ids.brand_id",
      "version_ids.model_id",
      "version_ids.hardware_version",
      "version_ids.firmware_version",
      "version_ids.band_id",
      "supports_join",
      "lorawan_version",
      "lorawan_phy_version",
      "frequency_plan_id",
      "ids.join_eui",
      "ids.dev_eui",
      "ids.device_id",
      "ids.application_ids.application_id",
      "mac_settings_profile_ids.application_ids",
      "mac_settings_profile_ids.application_ids.application_id",
      "mac_settings_profile_ids.profile_id"
    ]
  }
}

• Check that the MAC settings profile end_devices_count shows 1

GET http://localhost:1885/api/v3/ns/applications/myapp/mac_settings_profiles/mac24?field_mask=ids,mac_settings,end_devices_count

response:
{
  "mac_settings_profile": {
    "ids": {
      "application_ids": {
        "application_id": "myapp"
      },
      "profile_id": "mac24"
    },
    "mac_settings": {
      "rx2_data_rate_index": 0,
      "rx2_frequency": "869525000"
    },
    "end_devices_count": 1
  }
}

• Delete the device

DELETE http://localhost:1885/api/v3/ns/applications/myapp/devices/test-dev15

• Check that the MAC settings profile end_devices_count shows 0

GET http://localhost:1885/api/v3/ns/applications/myapp/mac_settings_profiles/mac24?field_mask=ids,mac_settings,end_devices_count

response:
{
  "mac_settings_profile": {
    "ids": {
      "application_ids": {
        "application_id": "myapp"
      },
      "profile_id": "mac24"
    },
    "mac_settings": {
      "rx2_data_rate_index": 0,
      "rx2_frequency": "869525000"
    }
  }
}

Regressions

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Notes for Reviewers

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Checklist

• Scope: The referenced issue is addressed, there are no unrelated changes.
• Compatibility: The changes are backwards compatible with existing API, storage, configuration and CLI, according to the compatibility commitments in README.md for the chosen target branch.
• Documentation: Relevant documentation is added or updated.
• Testing: The steps/process to test this feature are clearly explained including testing for regressions.
• Infrastructure: If infrastructural changes (e.g., new RPC, configuration) are needed, a separate issue is created in the infrastructural repositories.
• Changelog: Significant features, behavior changes, deprecations and fixes are added to CHANGELOG.md.
• Commits: Commit messages follow guidelines in CONTRIBUTING.md, there are no fixup commits left.