From 0d7e3db7f846a13b59de9007b3d5cd4bacd7a667 Mon Sep 17 00:00:00 2001
From: Lucas Roesler <roesler.lucas@gmail.com>
Date: Sun, 27 Mar 2022 15:29:38 +0200
Subject: [PATCH] feat: upgrade to go 1.18 and support modules via workspaces

Update the Go template to use Go 1.18 and workspaces to handle module
replacements.

Signed-off-by: Lucas Roesler <roesler.lucas@gmail.com>
---
 template/go/Dockerfile      | 6 ++----
 template/go/function/go.mod | 3 +++
 template/go/go.mod          | 4 +---
 template/go/go.work         | 6 ++++++
 4 files changed, 12 insertions(+), 7 deletions(-)
 create mode 100644 template/go/function/go.mod
 create mode 100644 template/go/go.work

diff --git a/template/go/Dockerfile b/template/go/Dockerfile
index 37078ac4..8410a980 100644
--- a/template/go/Dockerfile
+++ b/template/go/Dockerfile
@@ -1,5 +1,5 @@
 FROM --platform=${TARGETPLATFORM:-linux/amd64} ghcr.io/openfaas/classic-watchdog:0.2.0 as watchdog
-FROM --platform=${BUILDPLATFORM:-linux/amd64} golang:1.17-alpine3.15 as builder
+FROM --platform=${BUILDPLATFORM:-linux/amd64} golang:1.18-alpine3.15 as builder
 
 ARG TARGETPLATFORM
 ARG BUILDPLATFORM
@@ -24,13 +24,11 @@ ENV CGO_ENABLED=0
 WORKDIR /go/src/handler
 COPY . .
 
-# Add user overrides to the root go.mod, which is the only place "replace" can be used
-RUN cat function/GO_REPLACE.txt >> ./go.mod || exit 0
-
 # Run a gofmt and exclude all vendored code.
 RUN test -z "$(gofmt -l $(find . -type f -name '*.go' -not -path "./vendor/*" -not -path "./function/vendor/*"))" || { echo "Run \"gofmt -s -w\" on your Golang code"; exit 1; }
 
 WORKDIR /go/src/handler/function
+RUN go env
 
 RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} CGO_ENABLED=${CGO_ENABLED} go test ./... -cover
 
diff --git a/template/go/function/go.mod b/template/go/function/go.mod
new file mode 100644
index 00000000..45f94acf
--- /dev/null
+++ b/template/go/function/go.mod
@@ -0,0 +1,3 @@
+module handler/function
+
+go 1.18
diff --git a/template/go/go.mod b/template/go/go.mod
index 64342319..34496254 100644
--- a/template/go/go.mod
+++ b/template/go/go.mod
@@ -1,5 +1,3 @@
 module handler
 
-go 1.16
-
-replace handler/function => ./function
+go 1.18
diff --git a/template/go/go.work b/template/go/go.work
new file mode 100644
index 00000000..8f6f1658
--- /dev/null
+++ b/template/go/go.work
@@ -0,0 +1,6 @@
+go 1.18
+
+use (
+	.
+	./function
+)