darwin: use x86 envoy build for arm64 (#2246)

* darwin: use x86 envoy build for arm64

* allow arm64 build for darwin

.github/goreleaser.yaml

@@ -26,9 +26,6 @@ builds:
     goos:
       - linux
       - darwin
-    ignore:
-      - goos: darwin
-        goarch: arm64
 
     ldflags:
       - -s -w

internal/envoy/envoy.go

@@ -15,6 +15,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"regexp"
+	"runtime"
 	"strconv"
 	"strings"
 	"sync"
@@ -196,7 +197,13 @@ func (srv *Server) run(ctx context.Context, cfg *config.Config) error {
 	}
 	srv.restartEpoch++
 
-	cmd := exec.Command(srv.envoyPath, args...) // #nosec
+	var cmd *exec.Cmd
+	if runtime.GOOS == "darwin" && runtime.GOARCH == "arm64" {
+		// until m1 macs are supported by envoy, fallback to x86 and use rosetta
+		cmd = exec.Command("arch", append([]string{"-x86_64", srv.envoyPath}, args...)...) // #nosec
+	} else {
+		cmd = exec.Command(srv.envoyPath, args...) // #nosec
+	}
 	cmd.Dir = srv.wd
 
 	stderr, err := cmd.StderrPipe()

scripts/get-envoy.bash

@@ -8,6 +8,11 @@ _envoy_version=1.17.3
 _dir="${DIR:-"$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)/../bin"}"
 _target="${TARGET:-"$(go env GOOS)-$(go env GOARCH)"}"
 
+# until m1 macs are supported, fallback to x86 and use rosetta
+if [ "$_target" == "darwin-arm64" ]; then
+  _target="darwin-amd64"
+fi
+
 is_command() {
     command -v "$1" >/dev/null
 }