Remove tempo serverless

.gitignore

@@ -8,7 +8,6 @@
 /bin
 /cmd/tempo-cli/tempo-cli
 /cmd/tempo-query/tempo-query
-/cmd/tempo-serverless/vendor/
 /dist
 /example/docker-compose/**/gcs-data/
 /example/docker-compose/**/tempo-data/

CHANGELOG.md

@@ -1,4 +1,17 @@
 ## main / unreleased
+* [CHANGE] **BREAKING CHANGE** Remove tempo serverless [#4599](https://github.com/grafana/tempo/pull/4599/) @electron0zero
+  Following config options are no longer valid, please remove them if you are using these in your tempo config:
+  ```
+  querier:
+      search:
+          prefer_self: <int>
+          external_hedge_requests_at: <duration>
+          external_hedge_requests_up_to:  <duration>
+          external_backend: <string>
+          google_cloud_run: <string>
+          external_endpoints: <array>
+  ```
+  Tempo serverless related metric `tempo_querier_external_endpoint_duration_seconds` and `tempo_querier_external_endpoint_hedged_roundtrips_total` are being removed.
 
 * [CHANGE] **BREAKING CHANGE** Removed `internal_error` as a reason from `tempo_discarded_spans_total`. [#4554](https://github.com/grafana/tempo/pull/4554) (@joe-elliott)
 * [ENHANCEMENT] Update minio to version [#4341](https://github.com/grafana/tempo/pull/4568) (@javiermolinar)
@@ -1298,4 +1311,4 @@ Additionally, default label `span_status` is renamed to `status_code`.
 * [BUGFIX] S3 multi-part upload errors [#306](https://github.com/grafana/tempo/pull/325)
 * [BUGFIX] Increase Prometheus `notfound` metric on tempo-vulture. [#301](https://github.com/grafana/tempo/pull/301)
 * [BUGFIX] Return 404 if searching for a tenant id that does not exist in the backend. [#321](https://github.com/grafana/tempo/pull/321)
-* [BUGFIX] Prune in-memory blocks from missing tenants. [#314](https://github.com/grafana/tempo/pull/314)
+* [BUGFIX] Prune in-memory blocks from missing tenants. [#314](https://github.com/grafana/tempo/pull/314)

Makefile

@@ -27,15 +27,13 @@ ALL_SRC := $(shell find . -name '*.go' \
 								-not -path './tools*/*' \
 								-not -path './vendor*/*' \
 								-not -path './integration/*' \
-								-not -path './cmd/tempo-serverless/*' \
                                 -type f | sort)
 
 # ALL_SRC but without pkg and tempodb packages
 OTHERS_SRC := $(shell find . -name '*.go' \
 								-not -path './tools*/*' \
 								-not -path './vendor*/*' \
 								-not -path './integration/*' \
-								-not -path './cmd/tempo-serverless/*' \
 								-not -path './pkg*/*' \
 								-not -path './tempodb*/*' \
                                 -type f | sort)