chore(NET-112): Add http api, streams and query related metrics to HotblockDB #48

define-null · 2026-01-14T07:55:19Z

What is this PR about?

Closes: https://linear.app/sqd-ai/issue/NET-112/add-metrics-to-hotblocksdb

PR adds metrics for main http endpoints, as well as stream/query related information for HotblocksDB.

Metrics example from the local run

# HELP hotblocks_first_block First block
# TYPE hotblocks_first_block gauge
hotblocks_first_block{dataset="my-devnet"} 24228465
# HELP hotblocks_last_block Last block
# TYPE hotblocks_last_block gauge
hotblocks_last_block{dataset="my-devnet"} 24228719
# HELP hotblocks_last_block_timestamp_ms Timestamp of the last block
# TYPE hotblocks_last_block_timestamp_ms gauge
hotblocks_last_block_timestamp_ms{dataset="my-devnet"} 1768342763000
# HELP hotblocks_last_finalized_block Last finalized block
# TYPE hotblocks_last_finalized_block gauge
hotblocks_last_finalized_block{dataset="my-devnet"} 24228632
# HELP hotblocks_query_error_too_many_tasks Number of query tasks rejected due to task queue overflow.
# TYPE hotblocks_query_error_too_many_tasks counter
hotblocks_query_error_too_many_tasks_total 0
# HELP hotblocks_query_error_too_many_data_waiters Number of queries rejected, because data is not yet available and there are too many data waiters.
# TYPE hotblocks_query_error_too_many_data_waiters counter
hotblocks_query_error_too_many_data_waiters_total 0
# HELP hotblocks_http_status Number of sent HTTP responses.
# TYPE hotblocks_http_status counter
hotblocks_http_status_total{dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_status_total{dataset_id="my-devnet",endpoint="/stream",status="400"} 1
# HELP hotblocks_http_seconds_to_first_byte Time to first byte of HTTP responses.
# TYPE hotblocks_http_seconds_to_first_byte histogram
hotblocks_http_seconds_to_first_byte_sum{dataset_id="my-devnet",endpoint="/stream",status="200"} 0.024065875
hotblocks_http_seconds_to_first_byte_count{dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="0.001",dataset_id="my-devnet",endpoint="/stream",status="200"} 0
hotblocks_http_seconds_to_first_byte_bucket{le="0.0015",dataset_id="my-devnet",endpoint="/stream",status="200"} 0
hotblocks_http_seconds_to_first_byte_bucket{le="0.0025",dataset_id="my-devnet",endpoint="/stream",status="200"} 0
hotblocks_http_seconds_to_first_byte_bucket{le="0.005",dataset_id="my-devnet",endpoint="/stream",status="200"} 0
hotblocks_http_seconds_to_first_byte_bucket{le="0.01",dataset_id="my-devnet",endpoint="/stream",status="200"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="0.015",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="0.025",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="0.05",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="0.1",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="0.15000000000000003",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="0.25",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="0.5",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="1.0",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="1.5",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="2.5",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="5.0",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="10.0",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="15.0",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="25.0",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="50.0",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_bucket{le="+Inf",dataset_id="my-devnet",endpoint="/stream",status="200"} 2
hotblocks_http_seconds_to_first_byte_sum{dataset_id="my-devnet",endpoint="/stream",status="400"} 0.00016325
hotblocks_http_seconds_to_first_byte_count{dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="0.001",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="0.0015",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="0.0025",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="0.005",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="0.01",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="0.015",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="0.025",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="0.05",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="0.1",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="0.15000000000000003",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="0.25",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="0.5",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="1.0",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="1.5",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="2.5",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="5.0",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="10.0",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="15.0",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="25.0",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="50.0",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
hotblocks_http_seconds_to_first_byte_bucket{le="+Inf",dataset_id="my-devnet",endpoint="/stream",status="400"} 1
# HELP hotblocks_stream_bytes Numbers of bytes per stream.
# TYPE hotblocks_stream_bytes histogram
hotblocks_stream_bytes_sum{dataset_id="my-devnet"} 21581.0
hotblocks_stream_bytes_count{dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="1000.0",dataset_id="my-devnet"} 0
hotblocks_stream_bytes_bucket{le="2000.0",dataset_id="my-devnet"} 0
hotblocks_stream_bytes_bucket{le="4000.0",dataset_id="my-devnet"} 0
hotblocks_stream_bytes_bucket{le="8000.0",dataset_id="my-devnet"} 0
hotblocks_stream_bytes_bucket{le="16000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="32000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="64000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="128000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="256000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="512000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="1024000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="2048000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="4096000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="8192000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="16384000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="32768000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="65536000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="131072000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="262144000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="524288000.0",dataset_id="my-devnet"} 2
hotblocks_stream_bytes_bucket{le="+Inf",dataset_id="my-devnet"} 2
# HELP hotblocks_stream_blocks Numbers of blocks per stream.
# TYPE hotblocks_stream_blocks histogram
hotblocks_stream_blocks_sum{dataset_id="my-devnet"} 510.0
hotblocks_stream_blocks_count{dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="1.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_bucket{le="2.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_bucket{le="4.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_bucket{le="8.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_bucket{le="16.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_bucket{le="32.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_bucket{le="64.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_bucket{le="128.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_bucket{le="256.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="512.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="1024.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="2048.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="4096.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="8192.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="16384.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="32768.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="65536.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="131072.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="262144.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="524288.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="1048576.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="2097152.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="4194304.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="8388608.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="16777216.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="33554432.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="67108864.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="134217728.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="268435456.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="536870912.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_bucket{le="+Inf",dataset_id="my-devnet"} 2
# HELP hotblocks_stream_chunks Numbers of chunks per stream.
# TYPE hotblocks_stream_chunks histogram
hotblocks_stream_chunks_sum{dataset_id="my-devnet"} 12.0
hotblocks_stream_chunks_count{dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="1.0",dataset_id="my-devnet"} 0
hotblocks_stream_chunks_bucket{le="1.5",dataset_id="my-devnet"} 0
hotblocks_stream_chunks_bucket{le="2.5",dataset_id="my-devnet"} 0
hotblocks_stream_chunks_bucket{le="5.0",dataset_id="my-devnet"} 0
hotblocks_stream_chunks_bucket{le="10.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="15.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="25.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="50.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="100.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="150.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="250.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="500.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="1000.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="1500.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="2500.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="5000.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="10000.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="15000.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="25000.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="50000.0",dataset_id="my-devnet"} 2
hotblocks_stream_chunks_bucket{le="+Inf",dataset_id="my-devnet"} 2
# HELP hotblocks_stream_bytes_per_second Completed streams bandwidth.
# TYPE hotblocks_stream_bytes_per_second histogram
hotblocks_stream_bytes_per_second_sum 1853834.8436018534
hotblocks_stream_bytes_per_second_count 2
hotblocks_stream_bytes_per_second_bucket{le="100.0"} 0
hotblocks_stream_bytes_per_second_bucket{le="300.0"} 0
hotblocks_stream_bytes_per_second_bucket{le="900.0"} 0
hotblocks_stream_bytes_per_second_bucket{le="2700.0"} 0
hotblocks_stream_bytes_per_second_bucket{le="8100.0"} 0
hotblocks_stream_bytes_per_second_bucket{le="24300.0"} 0
hotblocks_stream_bytes_per_second_bucket{le="72900.0"} 0
hotblocks_stream_bytes_per_second_bucket{le="218700.0"} 0
hotblocks_stream_bytes_per_second_bucket{le="656100.0"} 0
hotblocks_stream_bytes_per_second_bucket{le="1968300.0"} 2
hotblocks_stream_bytes_per_second_bucket{le="5904900.0"} 2
hotblocks_stream_bytes_per_second_bucket{le="17714700.0"} 2
hotblocks_stream_bytes_per_second_bucket{le="53144100.0"} 2
hotblocks_stream_bytes_per_second_bucket{le="159432300.0"} 2
hotblocks_stream_bytes_per_second_bucket{le="478296900.0"} 2
hotblocks_stream_bytes_per_second_bucket{le="1434890700.0"} 2
hotblocks_stream_bytes_per_second_bucket{le="4304672100.0"} 2
hotblocks_stream_bytes_per_second_bucket{le="12914016300.0"} 2
hotblocks_stream_bytes_per_second_bucket{le="38742048900.0"} 2
hotblocks_stream_bytes_per_second_bucket{le="116226146700.0"} 2
hotblocks_stream_bytes_per_second_bucket{le="+Inf"} 2
# HELP hotblocks_stream_blocks_per_second Completed streams speed in blocks.
# TYPE hotblocks_stream_blocks_per_second histogram
hotblocks_stream_blocks_per_second_sum{dataset_id="my-devnet"} 44493.63863694247
hotblocks_stream_blocks_per_second_count{dataset_id="my-devnet"} 2
hotblocks_stream_blocks_per_second_bucket{le="1.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_per_second_bucket{le="3.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_per_second_bucket{le="9.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_per_second_bucket{le="27.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_per_second_bucket{le="81.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_per_second_bucket{le="243.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_per_second_bucket{le="729.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_per_second_bucket{le="2187.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_per_second_bucket{le="6561.0",dataset_id="my-devnet"} 0
hotblocks_stream_blocks_per_second_bucket{le="19683.0",dataset_id="my-devnet"} 1
hotblocks_stream_blocks_per_second_bucket{le="59049.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_per_second_bucket{le="177147.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_per_second_bucket{le="531441.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_per_second_bucket{le="1594323.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_per_second_bucket{le="4782969.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_per_second_bucket{le="14348907.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_per_second_bucket{le="43046721.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_per_second_bucket{le="129140163.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_per_second_bucket{le="387420489.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_per_second_bucket{le="1162261467.0",dataset_id="my-devnet"} 2
hotblocks_stream_blocks_per_second_bucket{le="+Inf",dataset_id="my-devnet"} 2
# HELP hotblocks_stream_duration_seconds Durations of completed streams.
# TYPE hotblocks_stream_duration_seconds histogram
hotblocks_stream_duration_seconds_sum{dataset_id="my-devnet"} 0.024054166000000003
hotblocks_stream_duration_seconds_count{dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="0.01",dataset_id="my-devnet"} 1
hotblocks_stream_duration_seconds_bucket{le="0.02",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="0.04",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="0.08",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="0.16",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="0.32",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="0.64",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="1.28",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="2.56",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="5.12",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="10.24",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="20.48",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="40.96",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="81.92",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="163.84",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="327.68",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="655.36",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="1310.72",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="2621.44",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="5242.88",dataset_id="my-devnet"} 2
hotblocks_stream_duration_seconds_bucket{le="+Inf",dataset_id="my-devnet"} 2
# HELP hotblocks_queried_bytes Numbers of bytes queried per running query.
# TYPE hotblocks_queried_bytes histogram
hotblocks_queried_bytes_sum{dataset_id="my-devnet"} 21581.0
hotblocks_queried_bytes_count{dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="1000.0",dataset_id="my-devnet"} 0
hotblocks_queried_bytes_bucket{le="2000.0",dataset_id="my-devnet"} 0
hotblocks_queried_bytes_bucket{le="4000.0",dataset_id="my-devnet"} 0
hotblocks_queried_bytes_bucket{le="8000.0",dataset_id="my-devnet"} 0
hotblocks_queried_bytes_bucket{le="16000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="32000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="64000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="128000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="256000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="512000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="1024000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="2048000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="4096000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="8192000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="16384000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="32768000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="65536000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="131072000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="262144000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="524288000.0",dataset_id="my-devnet"} 2
hotblocks_queried_bytes_bucket{le="+Inf",dataset_id="my-devnet"} 2
# HELP hotblocks_queried_blocks Numbers of blocks per running query.
# TYPE hotblocks_queried_blocks histogram
hotblocks_queried_blocks_sum{dataset_id="my-devnet"} 510.0
hotblocks_queried_blocks_count{dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="1.0",dataset_id="my-devnet"} 0
hotblocks_queried_blocks_bucket{le="2.0",dataset_id="my-devnet"} 0
hotblocks_queried_blocks_bucket{le="4.0",dataset_id="my-devnet"} 0
hotblocks_queried_blocks_bucket{le="8.0",dataset_id="my-devnet"} 0
hotblocks_queried_blocks_bucket{le="16.0",dataset_id="my-devnet"} 0
hotblocks_queried_blocks_bucket{le="32.0",dataset_id="my-devnet"} 0
hotblocks_queried_blocks_bucket{le="64.0",dataset_id="my-devnet"} 0
hotblocks_queried_blocks_bucket{le="128.0",dataset_id="my-devnet"} 0
hotblocks_queried_blocks_bucket{le="256.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="512.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="1024.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="2048.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="4096.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="8192.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="16384.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="32768.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="65536.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="131072.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="262144.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="524288.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="1048576.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="2097152.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="4194304.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="8388608.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="16777216.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="33554432.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="67108864.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="134217728.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="268435456.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="536870912.0",dataset_id="my-devnet"} 2
hotblocks_queried_blocks_bucket{le="+Inf",dataset_id="my-devnet"} 2
# HELP hotblocks_queried_chunks Numbers of chunks per running query.
# TYPE hotblocks_queried_chunks histogram
hotblocks_queried_chunks_sum{dataset_id="my-devnet"} 12.0
hotblocks_queried_chunks_count{dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="1.0",dataset_id="my-devnet"} 0
hotblocks_queried_chunks_bucket{le="1.5",dataset_id="my-devnet"} 0
hotblocks_queried_chunks_bucket{le="2.5",dataset_id="my-devnet"} 0
hotblocks_queried_chunks_bucket{le="5.0",dataset_id="my-devnet"} 0
hotblocks_queried_chunks_bucket{le="10.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="15.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="25.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="50.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="100.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="150.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="250.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="500.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="1000.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="1500.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="2500.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="5000.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="10000.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="15000.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="25000.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="50000.0",dataset_id="my-devnet"} 2
hotblocks_queried_chunks_bucket{le="+Inf",dataset_id="my-devnet"} 2
# HELP hotblocks_active_queries Number of active queries.
# TYPE hotblocks_active_queries gauge
hotblocks_active_queries 0
# HELP hotblocks_completed_queries Number of completed queries.
# TYPE hotblocks_completed_queries counter
hotblocks_completed_queries_total 3
# EOF

Some of the style changes may appear excessive due to rustfmt not having been run previously.

…tblockDB

crates/hotblocks/src/query/executor.rs

crates/hotblocks/src/api.rs

Copilot

Pull request overview

This PR adds comprehensive metrics instrumentation to HotblocksDB to track HTTP API performance, stream statistics, and query execution metrics. The implementation introduces Prometheus-compatible metrics for monitoring query throughput, data transfer rates, and API endpoint usage.

Changes:

Added HTTP middleware to track request metrics including status codes, time-to-first-byte, and endpoint-specific labels
Implemented stream and query statistics tracking with histograms for bytes, blocks, chunks, and throughput rates
Integrated metrics reporter that periodically updates active query gauges

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 13 comments.

Show a summary per file

File	Description
crates/hotblocks/src/metrics.rs	Added new metric definitions for HTTP, stream, and query tracking; reorganized registry with lazy_static
crates/hotblocks/src/query/executor.rs	Added metrics reporter for active queries and completed query counter
crates/hotblocks/src/query/running.rs	Implemented RunningQueryStats to track chunks, blocks, and bytes processed per query
crates/hotblocks/src/query/response.rs	Added QueryStreamStats to track stream metrics with time limit support and metrics reporting on drop
crates/hotblocks/src/query/service.rs	Exposed spawn_metrics_reporter method for periodic metrics updates
crates/hotblocks/src/api.rs	Added middleware for HTTP request tracking, ResponseWithMetadata pattern for endpoint labeling, and 404 handler
crates/hotblocks/src/cli.rs	Initialize metrics reporter with 5-second interval
crates/hotblocks/src/dataset_config.rs	Added clarifying comments to RetentionConfig variants
crates/hotblocks/Cargo.toml	Added lazy_static and tower-http dependencies
Cargo.lock	Updated lock file with new dependencies

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crates/hotblocks/src/metrics.rs

crates/hotblocks/src/api.rs

crates/hotblocks/src/metrics.rs

crates/hotblocks/src/query/response.rs

crates/hotblocks/src/query/service.rs

crates/hotblocks/src/query/running.rs

crates/hotblocks/src/query/response.rs

crates/hotblocks/src/metrics.rs

crates/hotblocks/src/api.rs

crates/hotblocks/src/query/response.rs

crates/hotblocks/src/query/executor.rs

crates/hotblocks/src/metrics.rs

crates/hotblocks/Cargo.toml

kalabukdima · 2026-01-16T05:23:50Z

crates/hotblocks/src/api.rs

+}
+
+#[derive(Clone)]
+pub struct Labels(Vec<(String, String)>);


BTW, I realized that making it Vec<(&'static str, String)> usually works and simplifies syntax. No call for action here, just for the future

chore(NET-112): Add http api, streams and query related metrics to Ho…

3ab696c

…tblockDB

define-null marked this pull request as ready for review January 14, 2026 08:00

define-null requested a review from kalabukdima January 14, 2026 08:18

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Rename dataset_id to dataset_name

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define-null requested a review from kalabukdima January 14, 2026 12:46

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define-null commented Jan 14, 2026

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Update crates/hotblocks/src/api.rs

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define-null commented Jan 14, 2026

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define-null added 2 commits January 14, 2026 22:12

Update crates/hotblocks/src/api.rs

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Dropped query_bytes

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eldargab requested changes Jan 15, 2026

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define-null requested a review from eldargab January 15, 2026 10:54

Remove unused import

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kalabukdima approved these changes Jan 16, 2026

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Remove unnecessary allocations

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define-null merged commit 3f6b9df into master Jan 16, 2026

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chore(NET-112): Add http api, streams and query related metrics to HotblockDB #48

chore(NET-112): Add http api, streams and query related metrics to HotblockDB #48

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chore(NET-112): Add http api, streams and query related metrics to HotblockDB #48

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define-null commented Jan 14, 2026 •

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