Changes from statik to go:embed for examples serving

There's currently a glitch because go.mod isn't allowed in the go:embed
path.

Signed-off-by: Adrian Cole <adrian@tetrate.io>

.circleci/config.yml

@@ -32,7 +32,6 @@ jobs:
       GOMAXPROCS: "3"
     steps:
       - checkout
-      - run: make init
       - run: ./ci/install-lint
       - run: ./ci/lint
 
@@ -41,7 +40,6 @@ jobs:
     resource_class: medium+
     steps:
       - checkout
-      - run: make init
       - run: ./ci/install-envoy
       - run: ./ci/test
       - run:

.github/workflows/commit.yaml

@@ -21,10 +21,7 @@ jobs:
     - name: "Install Go"
       uses: actions/setup-go@v2
       with:
-        go-version: '1.13.3'
-
-    - name: "Init on first use"
-      run: make init
+        go-version: '1.16.2'
 
     - name: "Build `getenvoy` and `e2e` binaries"
       run: make bin

.github/workflows/release.yaml

@@ -21,7 +21,7 @@ jobs:
       - name: "Set up Go"
         uses: actions/setup-go@v2
         with:
-          go-version: '1.13.3'
+          go-version: '1.16.2'
 
       - name: "Login into DockerHub"
         uses: azure/docker-login@v1
@@ -75,7 +75,7 @@ jobs:
     - name: "Install Go"
       uses: actions/setup-go@v2
       with:
-        go-version: '1.13.3'
+        go-version: '1.16.2'
 
     - name: "Build `e2e` binaries"
       run: make build/bin/linux/amd64/e2e build/bin/darwin/amd64/e2e

.gitignore

@@ -2,6 +2,4 @@ vendor
 dist
 /getenvoy
 /build/
-
-# code generated by `github.com/rakyll/statik`
-statik.go
+.idea

.goreleaser.yaml

@@ -15,9 +15,6 @@
 project_name: getenvoy
 env:
   - GO111MODULE=on
-before:
-  hooks:
-    - make init
 builds:
 - binary: getenvoy
   ldflags: "-s -w -X github.com/tetratelabs/getenvoy/pkg/version.version={{.Version}}"

Makefile

@@ -57,7 +57,7 @@ GETENVOY_OUT_PATH = $(BIN_DIR)/$(1)/$(2)/getenvoy
 
 define GEN_GETENVOY_BUILD_TARGET
 .PHONY: $(call GETENVOY_OUT_PATH,$(1),$(2))
-$(call GETENVOY_OUT_PATH,$(1),$(2)): generate
+$(call GETENVOY_OUT_PATH,$(1),$(2)):
 	CGO_ENABLED=0 GOOS=$(1) GOARCH=$(2) go build $(GO_LD_FLAGS) -o $(call GETENVOY_OUT_PATH,$(1),$(2)) ./cmd/getenvoy/main.go
 endef
 $(foreach os,$(GOOSES),$(foreach arch,$(GOARCHS),$(eval $(call GEN_GETENVOY_BUILD_TARGET,$(os),$(arch)))))
@@ -71,17 +71,10 @@ $(call E2E_OUT_PATH,$(1),$(2)):
 endef
 $(foreach os,$(GOOSES),$(foreach arch,$(GOARCHS),$(eval $(call GEN_E2E_BUILD_TARGET,$(os),$(arch)))))
 
-.PHONY: init
-init: generate
-
 .PHONY: deps
 deps:
 	go mod download
 
-.PHONY: generate
-generate: deps
-	go generate ./pkg/...
-
 .PHONY: build
 build: $(call GETENVOY_OUT_PATH,$(GOOS),$(GOARCH))
 
@@ -94,12 +87,12 @@ release.dryrun:
 	goreleaser release --skip-publish --snapshot --rm-dist
 
 .PHONY: test
-test: generate
+test:
 	docker-compose up -d
 	go test $(GO_TEST_OPTS) $(GO_TEST_EXTRA_OPTS) $(TEST_PKG_LIST)
 
 .PHONY: test.ci
-test.ci: generate
+test.ci:
 	go test $(GO_TEST_OPTS) $(GO_TEST_EXTRA_OPTS) $(TEST_PKG_LIST)
 
 .PHONY: e2e
@@ -123,7 +116,7 @@ endef
 $(foreach os,$(GOOSES),$(foreach arch,$(GOARCHS),$(eval $(call GEN_BIN_GOOS_GOARCH_TARGET,$(os),$(arch)))))
 
 .PHONY: coverage
-coverage: generate
+coverage:
 	mkdir -p "$(shell dirname "$(COVERAGE_PROFILE)")"
 	go test $(GO_COVERAGE_OPTS) $(GO_COVERAGE_EXTRA_OPTS) -coverprofile="$(COVERAGE_PROFILE)" $(COVERAGE_PKG_LIST)
 	go tool cover -html="$(COVERAGE_PROFILE)" -o "$(COVERAGE_REPORT)"

data/extension/init/templates.go

@@ -0,0 +1,37 @@
+// Copyright 2021 Tetrate
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// 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.
+
+package init
+//      ^^ last path in the directory relative from the project root data/extension/init
+
+import (
+	"embed"
+	"io/fs"
+)
+
+// templatesFs includes only the relative path of "templates".
+//
+// Assets must be in this directory because go:embed doesn't support navigation outside (ex. ../)
+// See https://pkg.go.dev/embed#hdr-Directives
+//go:embed templates/*
+var templatesFs embed.FS
+
+// GetTemplates returns the templates directory as a filesystem
+func GetTemplates() fs.FS {
+	fs, err := fs.Sub(templatesFs, "templates")
+	if err != nil {
+		panic(err) // unexpected or a typo
+	}
+	return fs
+}

data/extension/init/templates/tinygo/envoy.access_loggers/default/main.go

@@ -1,4 +1,4 @@
-package main
+package init
 
 import (
 	"github.com/tetratelabs/proxy-wasm-go-sdk/proxywasm"

data/extension/init/templates/tinygo/envoy.filters.http/default/main.go

@@ -1,4 +1,4 @@
-package main
+package init
 
 import (
 	"bufio"

data/extension/init/templates/tinygo/envoy.filters.http/default/main_test.go

@@ -1,4 +1,4 @@
-package main
+package init
 
 import (
 	"testing"

data/extension/init/templates/tinygo/envoy.filters.network/default/main.go

@@ -1,4 +1,4 @@
-package main
+package init
 
 import (
 	"github.com/tetratelabs/proxy-wasm-go-sdk/proxywasm"

data/extension/init/templates/tinygo/envoy.filters.network/default/main_test.go

@@ -1,4 +1,4 @@
-package main
+package init
 
 import (
 	"testing"

go.mod

@@ -1,6 +1,7 @@
 module github.com/tetratelabs/getenvoy
 
-go 1.13
+// This project uses go:embed, so requires minimally go 1.16
+go 1.16
 
 require (
 	bitbucket.org/creachadair/shell v0.0.6
@@ -16,7 +17,7 @@ require (
 	github.com/go-ole/go-ole v1.2.4 // indirect
 	github.com/golang/protobuf v1.3.5
 	github.com/gotestyourself/gotestyourself v2.2.0+incompatible // indirect
-	github.com/manifoldco/promptui v0.0.0-00010101000000-000000000000
+	github.com/manifoldco/promptui v0.8.0
 	github.com/mattn/go-isatty v0.0.12
 	github.com/mattn/go-shellwords v1.0.10
 	github.com/mholt/archiver v3.1.1+incompatible
@@ -27,7 +28,6 @@ require (
 	github.com/opencontainers/selinux v1.8.0 // indirect
 	github.com/otiai10/copy v1.2.0
 	github.com/pkg/errors v0.9.1
-	github.com/rakyll/statik v0.0.0-00010101000000-000000000000
 	github.com/schollz/progressbar/v2 v2.13.2
 	github.com/shirou/gopsutil v0.0.0-20190731134726-d80c43f9c984
 	github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749
@@ -47,7 +47,3 @@ replace github.com/Azure/go-autorest/autorest => github.com/Azure/go-autorest/au
 replace github.com/docker/docker => github.com/docker/docker v17.12.1-ce+incompatible
 
 replace github.com/hashicorp/consul => github.com/hashicorp/consul v1.3.1
-
-replace github.com/manifoldco/promptui => github.com/yskopets/promptui v0.7.1-0.20200429230902-361491009c11
-
-replace github.com/rakyll/statik => github.com/yskopets/statik v0.1.8-0.20200501213002-c2d8dcc79889