src/diagnostics/sampler/config/ftl.json

 {
   "project_id": 3676913920,
   "poll_rate_sec": 60,
   "metrics": [
     {
      "selector": "bootstrap/driver_manager:root/ftl:block.read.count",
      "metric_id": 2001,
      "metric_type": "Occurrence",
      "event_codes": [1]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.write.count",
      "metric_id": 2001,
      "metric_type": "Occurrence",
      "event_codes": [2]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.flush.count",
      "metric_id": 2001,
      "metric_type": "Occurrence",
      "event_codes": [3]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.trim.count",
      "metric_id": 2001,
      "metric_type": "Occurrence",
      "event_codes": [4]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.read.issued_page_read.count",
      "metric_id": 2002,
      "metric_type": "Occurrence",
      "event_codes": [1, 1]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.read.issued_page_write.count",
      "metric_id": 2002,
      "metric_type": "Occurrence",
      "event_codes": [2, 1]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.read.issued_block_erase.count",
      "metric_id": 2002,
      "metric_type": "Occurrence",
      "event_codes": [3, 1]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.write.issued_page_read.count",
      "metric_id": 2002,
      "metric_type": "Occurrence",
      "event_codes": [1, 2]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.write.issued_page_write.count",
      "metric_id": 2002,
      "metric_type": "Occurrence",
      "event_codes": [2, 2]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.write.issued_block_erase.count",
      "metric_id": 2002,
      "metric_type": "Occurrence",
      "event_codes": [3, 2]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.flush.issued_page_read.count",
      "metric_id": 2002,
      "metric_type": "Occurrence",
      "event_codes": [1, 3]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.flush.issued_page_write.count",
      "metric_id": 2002,
      "metric_type": "Occurrence",
      "event_codes": [2, 3]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.flush.issued_block_erase.count",
      "metric_id": 2002,
      "metric_type": "Occurrence",
      "event_codes": [3, 3]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.trim.issued_page_read.count",
      "metric_id": 2002,
      "metric_type": "Occurrence",
      "event_codes": [1, 4]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.trim.issued_page_write.count",
      "metric_id": 2002,
      "metric_type": "Occurrence",
      "event_codes": [2, 4]
    },
    {
      "selector": "bootstrap/driver_manager:root/ftl:block.trim.issued_block_erase.count",
      "metric_id": 2002,
      "metric_type": "Occurrence",
      "event_codes": [3, 4]
    }
  ]
}