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Add metrics useful for Partial Data Columns #21

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Expand Up @@ -53,6 +53,21 @@ The following metrics are proposed to be added to clients for PeerDAS monitoring
| `beacon_engine_getBlobsV2_responses_total` | Counter | Total number of `engine_getBlobsV2` successful responses received | On receiving `engine_getBlobsV2` responses |
| `beacon_engine_getBlobsV2_request_duration_seconds` | Histogram | Duration of `engine_getBlobsV2` requests | On `engine_getBlobsV2` request completion

#### Partial Data Column metrics (aka Cell-Level Dissemination)

| Name | Metric type | Usage | Sample collection event |
| --------------------------------------------------- | ----------- | -------------------------------------------------------------------------------------- | ------------------------------------------ |
| `beacon_engine_getBlobsV3_requests_total` | Counter | Total number of `engine_getBlobsV3` requests sent | On sending `engine_getBlobsV2` requests |
| `beacon_engine_getBlobsV3_complete_responses_total` | Counter | Total number of complete `engine_getBlobsV3` successful responses received | On receiving `engine_getBlobsV2` responses |
| `beacon_engine_getBlobsV3_partial_responses_total` | Counter | Total number of `engine_getBlobsV3` partial responses received | On receiving `engine_getBlobsV3` responses |
| `beacon_engine_getBlobsV2_request_duration_seconds` | Histogram | Duration of `engine_getBlobsV3` requests | On `engine_getBlobsV2` request completion |
| `gossipsub_pubsub_rpc_sent_pub_size_total` | Counter | Total size of publish messages sent via RPC. Labels: `topic`, `is_partial` (bool) | On pubsub RPC publish |
| `gossipsub_mesh_partial_message_capable_peers` | Gauge | Number of partial-message capable peers in mesh. Labels: `topic` | On mesh peer update |
| `beacon_partial_message_useful_cells_total` | Counter | Number of useful cells received via a partial message. Labels: `column_index` | On useful partial message reception |
| `beacon_partial_message_cells_received_total` | Counter | Number of total cells received via a partial message. Labels: `column_index` | On partial message reception |
| `beacon_useful_full_columns_received_total` | Counter | Number of useful full columns (any cell being useful) received. Labels: `column_index` | On useful full column reception |
| `beacon_partial_message_column_completions_total` | Counter | How often the partial message first completed the column. Labels: `column_index` | On column completion by partial message |

### Additional Metrics

The following are proposed metrics to be added to clients. This list is _not_ stable and is subject to drastic changes, deletions, and additions. The additional metric list is being
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