Removes go1.17, replaces with go1.18

.github/workflows/benchmark.yml

@@ -4,7 +4,7 @@ on:
     branches:
       - main
 env:
-  DEFAULT_GO_VERSION: 1.17
+  DEFAULT_GO_VERSION: 1.18
 jobs:
   benchmark:
     name: Benchmarks

.github/workflows/ci.yml

@@ -109,7 +109,7 @@ jobs:
   compatibility-test:
     strategy:
       matrix:
-        go-version: [1.19, 1.18, 1.17]
+        go-version: [1.19, 1.18]
         os: [ubuntu-latest, macos-latest, windows-latest]
         # GitHub Actions does not support arm* architectures on default
         # runners. It is possible to acomplish this with a self-hosted runner

.github/workflows/dependabot.yml

@@ -13,7 +13,7 @@ jobs:
         ref: ${{ github.head_ref }}
     - uses: actions/setup-go@v3
       with:
-        go-version: '^1.17.0'
+        go-version: '^1.18.0'
     - uses: evantorrie/mott-the-tidier@v1-beta
       id: modtidy
       with:

CHANGELOG.md

@@ -14,6 +14,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 - The metric SDK in `go.opentelemetry.io/otel/sdk/metric` is completely refactored to comply with the OpenTelemetry specification.
   Please see the package documentation for how the new SDK is initialized and configured. (#3175)
+- Update the minimum supported go version to go1.18. Removes support for go1.17 (#3179)
 
 ### Removed
 

Makefile

@@ -156,7 +156,7 @@ go-mod-tidy/%: DIR=$*
 go-mod-tidy/%: | crosslink
 	@echo "$(GO) mod tidy in $(DIR)" \
 		&& cd $(DIR) \
-		&& $(GO) mod tidy -compat=1.17
+		&& $(GO) mod tidy -compat=1.18
 
 .PHONY: lint-modules
 lint-modules: go-mod-tidy

README.md

@@ -52,19 +52,14 @@ Currently, this project supports the following environments.
 | ------- | ---------- | ------------ |
 | Ubuntu  | 1.19       | amd64        |
 | Ubuntu  | 1.18       | amd64        |
-| Ubuntu  | 1.17       | amd64        |
 | Ubuntu  | 1.19       | 386          |
 | Ubuntu  | 1.18       | 386          |
-| Ubuntu  | 1.17       | 386          |
 | MacOS   | 1.19       | amd64        |
 | MacOS   | 1.18       | amd64        |
-| MacOS   | 1.17       | amd64        |
 | Windows | 1.19       | amd64        |
 | Windows | 1.18       | amd64        |
-| Windows | 1.17       | amd64        |
 | Windows | 1.19       | 386          |
 | Windows | 1.18       | 386          |
-| Windows | 1.17       | 386          |
 
 While this project should work for other systems, no compatibility guarantees
 are made for those systems currently.

bridge/opencensus/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/bridge/opencensus
 
-go 1.17
+go 1.18
 
 require (
 	go.opencensus.io v0.22.6-0.20201102222123-380f4078db9f

bridge/opencensus/test/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/bridge/opencensus/test
 
-go 1.17
+go 1.18
 
 require (
 	go.opencensus.io v0.23.0

bridge/opentracing/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/bridge/opentracing
 
-go 1.17
+go 1.18
 
 replace go.opentelemetry.io/otel => ../..
 

example/fib/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/example/fib
 
-go 1.17
+go 1.18
 
 require (
 	go.opentelemetry.io/otel v1.10.0

example/jaeger/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/example/jaeger
 
-go 1.17
+go 1.18
 
 replace (
 	go.opentelemetry.io/otel => ../..

example/namedtracer/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/example/namedtracer
 
-go 1.17
+go 1.18
 
 replace (
 	go.opentelemetry.io/otel => ../..

example/otel-collector/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/example/otel-collector
 
-go 1.17
+go 1.18
 
 replace (
 	go.opentelemetry.io/otel => ../..

example/passthrough/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/example/passthrough
 
-go 1.17
+go 1.18
 
 require (
 	go.opentelemetry.io/otel v1.10.0

example/zipkin/Dockerfile

@@ -11,7 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-FROM golang:1.17-alpine
+FROM golang:1.18-alpine
 COPY . /go/src/github.com/open-telemetry/opentelemetry-go/
 WORKDIR /go/src/github.com/open-telemetry/opentelemetry-go/example/zipkin/
 RUN go install ./main.go

example/zipkin/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/example/zipkin
 
-go 1.17
+go 1.18
 
 replace (
 	go.opentelemetry.io/otel => ../..

exporters/jaeger/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/exporters/jaeger
 
-go 1.17
+go 1.18
 
 require (
 	github.com/google/go-cmp v0.5.8

exporters/otlp/internal/retry/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/exporters/otlp/internal/retry
 
-go 1.17
+go 1.18
 
 require (
 	github.com/cenkalti/backoff/v4 v4.1.3

exporters/otlp/otlptrace/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/exporters/otlp/otlptrace
 
-go 1.17
+go 1.18
 
 require (
 	github.com/google/go-cmp v0.5.8

exporters/otlp/otlptrace/otlptracegrpc/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc
 
-go 1.17
+go 1.18
 
 require (
 	github.com/stretchr/testify v1.7.1

exporters/otlp/otlptrace/otlptracehttp/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp
 
-go 1.17
+go 1.18
 
 require (
 	github.com/stretchr/testify v1.7.1

exporters/stdout/stdouttrace/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/exporters/stdout/stdouttrace
 
-go 1.17
+go 1.18
 
 replace (
 	go.opentelemetry.io/otel => ../../..

exporters/zipkin/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/exporters/zipkin
 
-go 1.17
+go 1.18
 
 require (
 	github.com/google/go-cmp v0.5.8

go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel
 
-go 1.17
+go 1.18
 
 require (
 	github.com/go-logr/logr v1.2.3

internal/tools/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/internal/tools
 
-go 1.17
+go 1.18
 
 require (
 	github.com/client9/misspell v0.3.4

metric/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/metric
 
-go 1.17
+go 1.18
 
 require (
 	github.com/stretchr/testify v1.7.1

schema/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/schema
 
-go 1.17
+go 1.18
 
 require (
 	github.com/Masterminds/semver/v3 v3.1.1

sdk/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/sdk
 
-go 1.17
+go 1.18
 
 replace go.opentelemetry.io/otel => ../
 

sdk/metric/aggregation/aggregation.go

@@ -12,9 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build go1.17
-// +build go1.17
-
 // Package aggregation contains configuration types that define the
 // aggregation operation used to summarizes recorded measurements.
 package aggregation // import "go.opentelemetry.io/otel/sdk/metric/aggregation"

sdk/metric/aggregation/aggregation_test.go

@@ -12,9 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build go1.17
-// +build go1.17
-
 package aggregation
 
 import (

sdk/metric/metricdata/temporality.go

@@ -13,8 +13,6 @@
 // limitations under the License.
 
 //go:generate stringer -type=Temporality
-//go:build go1.17
-// +build go1.17
 
 package metricdata // import "go.opentelemetry.io/otel/sdk/metric/metricdata"
 

trace/go.mod

@@ -1,6 +1,6 @@
 module go.opentelemetry.io/otel/trace
 
-go 1.17
+go 1.18
 
 replace go.opentelemetry.io/otel => ../