From d4849561efa00ed6c38aedfcd1cedc99999053d5 Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@gmail.com>
Date: Wed, 17 Feb 2021 19:13:38 +0200
Subject: [PATCH] app/vmstorage: export
 vm_composite_filter_success_conversions_total and
 vm_composite_filter_missing_conversions_total metrics

---
 app/vmstorage/main.go      | 6 ++++++
 lib/storage/index_db.go    | 6 +++++-
 lib/storage/tag_filters.go | 8 ++++++++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/app/vmstorage/main.go b/app/vmstorage/main.go
index 3a5f4bfe1..4a96fd130 100644
--- a/app/vmstorage/main.go
+++ b/app/vmstorage/main.go
@@ -448,6 +448,12 @@ func registerStorageMetrics() {
 	metrics.NewGauge(`vm_composite_index_min_timestamp`, func() float64 {
 		return float64(idbm().MinTimestampForCompositeIndex) / 1e3
 	})
+	metrics.NewGauge(`vm_composite_filter_success_conversions_total`, func() float64 {
+		return float64(idbm().CompositeFilterSuccessConversions)
+	})
+	metrics.NewGauge(`vm_composite_filter_missing_conversions_total`, func() float64 {
+		return float64(idbm().CompositeFilterMissingConversions)
+	})
 
 	metrics.NewGauge(`vm_assisted_merges_total{type="storage/small"}`, func() float64 {
 		return float64(tm().SmallAssistedMerges)
diff --git a/lib/storage/index_db.go b/lib/storage/index_db.go
index 4a1759408..c6ade8c65 100644
--- a/lib/storage/index_db.go
+++ b/lib/storage/index_db.go
@@ -205,7 +205,9 @@ type IndexDBMetrics struct {
 	IndexBlocksWithMetricIDsProcessed      uint64
 	IndexBlocksWithMetricIDsIncorrectOrder uint64
 
-	MinTimestampForCompositeIndex uint64
+	MinTimestampForCompositeIndex     uint64
+	CompositeFilterSuccessConversions uint64
+	CompositeFilterMissingConversions uint64
 
 	mergeset.TableMetrics
 }
@@ -249,6 +251,8 @@ func (db *indexDB) UpdateMetrics(m *IndexDBMetrics) {
 	m.IndexBlocksWithMetricIDsIncorrectOrder = atomic.LoadUint64(&indexBlocksWithMetricIDsIncorrectOrder)
 
 	m.MinTimestampForCompositeIndex = uint64(db.minTimestampForCompositeIndex)
+	m.CompositeFilterSuccessConversions = atomic.LoadUint64(&compositeFilterSuccessConversions)
+	m.CompositeFilterMissingConversions = atomic.LoadUint64(&compositeFilterMissingConversions)
 
 	db.tb.UpdateMetrics(&m.TableMetrics)
 	db.doExtDB(func(extDB *indexDB) {
diff --git a/lib/storage/tag_filters.go b/lib/storage/tag_filters.go
index 5d62cbc04..67a373f4e 100644
--- a/lib/storage/tag_filters.go
+++ b/lib/storage/tag_filters.go
@@ -36,6 +36,7 @@ func convertToCompositeTagFilters(tfs *TagFilters) *TagFilters {
 	}
 	if len(name) == 0 {
 		// There is no metric name filter, so composite filters cannot be created.
+		atomic.AddUint64(&compositeFilterMissingConversions, 1)
 		return tfs
 	}
 	tfsNew := make([]tagFilter, 0, len(tfs.tfs))
@@ -61,13 +62,20 @@ func convertToCompositeTagFilters(tfs *TagFilters) *TagFilters {
 		compositeFilters++
 	}
 	if compositeFilters == 0 {
+		atomic.AddUint64(&compositeFilterMissingConversions, 1)
 		return tfs
 	}
 	tfsCompiled := NewTagFilters()
 	tfsCompiled.tfs = tfsNew
+	atomic.AddUint64(&compositeFilterSuccessConversions, 1)
 	return tfsCompiled
 }
 
+var (
+	compositeFilterSuccessConversions uint64
+	compositeFilterMissingConversions uint64
+)
+
 // TagFilters represents filters used for filtering tags.
 type TagFilters struct {
 	tfs []tagFilter