maint: prepare for release v2.9.2 (#1476)

## Which problem is this PR solving?

- Prepare for 2.9.2 release

## Short description of the changes

- generated metrics doc
- updated changelog and release_note

CHANGELOG.md

@@ -1,5 +1,18 @@
 # Refinery Changelog
 
+## 2.9.2 2025-01-23
+
+### Fixes
+
+fix: only load config and rules once (#1470) | [Tyler Helmuth](https://github.com/TylerHelmuth)
+fix: add incoming/peer_router_otlp metrics for otlp traffic (#1474) | [Yingrong Zhao](https://github.com/vinozzZ)
+
+### Maintenance
+
+maint(deps): bump the minor-patch group across 1 directory with 14 updates (#1475) | [dependabot](https://github.com/dependabot)
+feat: update libhoney to 1.25.0 (#1473) | [Yingrong Zhao](https://github.com/vinozzZ)
+maint: bump golang.org/x/net to v0.33.0 (#1466) | [Tyler Helmuth](https://github.com/TylerHelmuth)
+
 ## 2.9.1 2024-12-12
 
 ### Fixes

RELEASE_NOTES.md

@@ -2,10 +2,16 @@
 
 While [CHANGELOG.md](./CHANGELOG.md) contains detailed documentation and links to all the source code changes in a given release, this document is intended to be aimed at a more comprehensible version of the contents of the release from the point of view of users of Refinery.
 
+## Version 2.9.2
+
+Honeycomb's backend can now accept events with sizes up to 1 million bytes. This release enables Refinery to conform to the same limit and supports sending events up to 1MB.
+It also improves Refinery's internal metrics by introducing a new metric, `incoming_router_otlp`, to track the amount of OTLP requests Refinery has received.
+
 ## Version 2.9.1
 
 This is a bug fix release and includes the following changes:
-* Registers all metrics during process start up to ensure they record their initial and ongoing values
+
+- Registers all metrics during process start up to ensure they record their initial and ongoing values
 
 ## Version 2.9.0
 

metrics.md

@@ -1,7 +1,7 @@
 # Honeycomb Refinery Metrics Documentation
 
 This document contains the description of various metrics used in Refinery.
-It was automatically generated on 2024-12-02 at 18:38:37 UTC.
+It was automatically generated on 2025-01-23 at 16:59:37 UTC.
 
 Note: This document does not include metrics defined in the dynsampler-go dependency, as those metrics are generated dynamically at runtime. As a result, certain metrics may be missing or incomplete in this document, but they will still be available during execution with their full names.
 
@@ -14,6 +14,8 @@ This table includes metrics with fully defined names.
 | cuckoo_current_capacity | Gauge | Dimensionless | current capacity of the cuckoo filter |
 | cuckoo_future_load_factor | Gauge | Percent | the fraction of slots occupied in the future cuckoo filter |
 | cuckoo_current_load_factor | Gauge | Percent | the fraction of slots occupied in the current cuckoo filter |
+| cuckoo_addqueue_full | Counter | Dimensionless | the number of times the add queue was full and a drop decision was dropped |
+| cuckoo_addqueue_locktime_uS | Histogram | Microseconds | the time spent holding the add queue lock |
 | cache_recent_dropped_traces | Gauge | Dimensionless | the current size of the most recent dropped trace cache |
 | collect_sent_reasons_cache_entries | Histogram | Dimensionless | Number of entries in the sent reasons cache |
 | is_ready | Gauge | Dimensionless | Whether the system is ready to receive traffic |
@@ -58,6 +60,7 @@ This table includes metrics with fully defined names.
 | trace_aggregate_sample_rate | Histogram | Dimensionless | aggregate sample rate of both kept and dropped traces |
 | collector_redistribute_traces_duration_ms | Histogram | Milliseconds | duration of redistributing traces to peers |
 | collector_collect_loop_duration_ms | Histogram | Milliseconds | duration of the collect loop, the primary event processing goroutine |
+| collector_send_expired_traces_in_cache_dur_ms | Histogram | Milliseconds | duration of sending expired traces in cache |
 | collector_outgoing_queue | Histogram | Dimensionless | number of traces waiting to be send to upstream |
 | collector_drop_decision_batch_count | Histogram | Dimensionless | number of drop decisions sent in a batch |
 | collector_expired_traces_missing_decisions | Gauge | Dimensionless | number of decision spans forwarded for expired traces missing trace decision |
@@ -97,6 +100,8 @@ Metrics in this table don't contain their expected prefixes. This is because the
 | _router_dropped | Counter | Dimensionless | the number of events dropped because the channel was full |
 | _router_nonspan | Counter | Dimensionless | the number of non-span events received |
 | _router_peer | Counter | Dimensionless | the number of spans proxied to a peer |
+| _router_batch | Counter | Dimensionless | the number of batches of events received |
+| _router_otlp | Counter | Dimensionless | the number of batches of otlp requests received |
 | queue_length | Gauge | Dimensionless | number of events waiting to be sent to destination |
 | queue_overflow | Counter | Dimensionless | number of events dropped due to queue overflow |
 | send_errors | Counter | Dimensionless | number of errors encountered while sending events to destination |

tools/convert/metricsMeta.yaml

@@ -15,6 +15,14 @@ complete:
       type: Gauge
       unit: Percent
       description: the fraction of slots occupied in the current cuckoo filter
+    - name: cuckoo_addqueue_full
+      type: Counter
+      unit: Dimensionless
+      description: the number of times the add queue was full and a drop decision was dropped
+    - name: cuckoo_addqueue_locktime_uS
+      type: Histogram
+      unit: Microseconds
+      description: the time spent holding the add queue lock
     - name: cache_recent_dropped_traces
       type: Gauge
       unit: Dimensionless
@@ -191,6 +199,10 @@ complete:
       type: Histogram
       unit: Milliseconds
       description: duration of the collect loop, the primary event processing goroutine
+    - name: collector_send_expired_traces_in_cache_dur_ms
+      type: Histogram
+      unit: Milliseconds
+      description: duration of sending expired traces in cache
     - name: collector_outgoing_queue
       type: Histogram
       unit: Dimensionless
@@ -316,6 +328,14 @@ hasprefix:
       type: Counter
       unit: Dimensionless
       description: the number of spans proxied to a peer
+    - name: _router_batch
+      type: Counter
+      unit: Dimensionless
+      description: the number of batches of events received
+    - name: _router_otlp
+      type: Counter
+      unit: Dimensionless
+      description: the number of batches of otlp requests received
     - name: queue_length
       type: Gauge
       unit: Dimensionless