From 5a49b85b2a8ba0ade97bcd32d95904f690ffacd9 Mon Sep 17 00:00:00 2001
From: Zach Leslie <zach.leslie@grafana.com>
Date: Thu, 26 Aug 2021 16:05:52 -0600
Subject: [PATCH] Include additional detail when searching for traces

---
 CHANGELOG.md               |  1 +
 modules/querier/querier.go |  1 +
 tempodb/tempodb.go         | 11 ++++++++++-
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index aa6e962b490..8cd998b51c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## main / unreleased
 
 * [ENHANCEMENT] Make s3 backend readError logic more robust [#905](https://github.com/grafana/tempo/pull/905) (@wei840222)
+* [ENHANCEMENT] Include additional detail when searching for traces [#916](https://github.com/grafana/tempo/pull/916) (@zalegrala)
 
 ## v1.1.0 / 2021-08-26
 
diff --git a/modules/querier/querier.go b/modules/querier/querier.go
index a2bb319eb14..e5c5383dbd3 100644
--- a/modules/querier/querier.go
+++ b/modules/querier/querier.go
@@ -219,6 +219,7 @@ func (q *Querier) FindTraceByID(ctx context.Context, req *tempopb.TraceByIDReque
 			traceCountTotal++
 
 			span.LogFields(ot_log.String("msg", "combined trace protos from store"),
+				ot_log.Bool("found", completeTrace != nil),
 				ot_log.Int("combinedSpans", spanCountTotal),
 				ot_log.Int("combinedTraces", traceCountTotal))
 		}
diff --git a/tempodb/tempodb.go b/tempodb/tempodb.go
index 88ae202eda4..9be627f42dd 100644
--- a/tempodb/tempodb.go
+++ b/tempodb/tempodb.go
@@ -291,15 +291,19 @@ func (rw *readerWriter) Find(ctx context.Context, tenantID string, id common.ID,
 	blocklist := rw.blocklist.Metas(tenantID)
 	compactedBlocklist := rw.blocklist.CompactedMetas(tenantID)
 	copiedBlocklist := make([]interface{}, 0, len(blocklist))
+	blocksSearched := 0
+	compactedBlocksSearched := 0
 
 	for _, b := range blocklist {
 		if includeBlock(b, id, blockStartBytes, blockEndBytes) {
 			copiedBlocklist = append(copiedBlocklist, b)
+			blocksSearched++
 		}
 	}
 	for _, c := range compactedBlocklist {
 		if includeCompactedBlock(c, id, blockStartBytes, blockEndBytes, rw.cfg.BlocklistPoll) {
 			copiedBlocklist = append(copiedBlocklist, &c.BlockMeta)
+			compactedBlocksSearched++
 		}
 	}
 	if len(copiedBlocklist) == 0 {
@@ -325,7 +329,12 @@ func (rw *readerWriter) Find(ctx context.Context, tenantID string, id common.ID,
 			ot_log.String("msg", "searching for trace in block"),
 			ot_log.String("blockID", meta.BlockID.String()),
 			ot_log.Bool("found", foundObject != nil),
-			ot_log.Int("bytes", len(foundObject)))
+			ot_log.Int("bytes", len(foundObject)),
+			ot_log.Int("live blocks", len(blocklist)),
+			ot_log.Int("live blocks searched", blocksSearched),
+			ot_log.Int("compacted blocks", len(compactedBlocklist)),
+			ot_log.Int("compacted blocks searched", compactedBlocksSearched),
+		)
 
 		return foundObject, meta.DataEncoding, nil
 	})