Add armhf template support

Introduce support for (Issue #4):
- golang-http-armhf
- golang-middleware-armhf

Signed-off-by: Radoslav Dimitrov <[email protected]>

Author: rdimitrov

template/golang-http-armhf/Dockerfile

@@ -0,0 +1,38 @@
+FROM golang:1.10.4-alpine3.8 as build
+
+RUN apk --no-cache add curl \
+    && echo "Pulling watchdog binary from Github." \
+    && curl -sSLf https://github.com/openfaas-incubator/of-watchdog/releases/download/0.4.0/of-watchdog-armhf > /usr/bin/fwatchdog \
+    && chmod +x /usr/bin/fwatchdog \
+    && apk del curl --no-cache
+
+RUN mkdir -p /go/src/handler
+WORKDIR /go/src/handler
+COPY . .
+
+# 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; }
+
+RUN CGO_ENABLED=0 GOOS=linux \
+    go build --ldflags "-s -w" -a -installsuffix cgo -o handler . && \
+    go test $(go list ./... | grep -v /vendor/) -cover
+
+FROM alpine:3.8
+# Add non root user and certs
+RUN apk --no-cache add ca-certificates \
+    && addgroup -S app && adduser -S -g app app \
+    && mkdir -p /home/app \
+    && chown app /home/app
+
+WORKDIR /home/app
+
+COPY --from=build /go/src/handler/handler    .
+COPY --from=build /usr/bin/fwatchdog         .
+
+USER app
+
+ENV fprocess="./handler"
+ENV mode="http"
+ENV upstream_url="http://127.0.0.1:8081"
+
+CMD ["./fwatchdog"]

template/golang-http-armhf/Gopkg.lock

@@ -0,0 +1,26 @@
+
+# Gopkg.toml example
+#
+# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#  name = "github.com/x/y"
+#  version = "2.4.0"
+
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/openfaas-incubator/go-function-sdk"

template/golang-http-armhf/Gopkg.toml

@@ -0,0 +1,20 @@
+package function
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/openfaas-incubator/go-function-sdk"
+)
+
+// Handle a function invocation
+func Handle(req handler.Request) (handler.Response, error) {
+	var err error
+
+	message := fmt.Sprintf("Hello world, input was: %s", string(req.Body))
+
+	return handler.Response{
+		Body:       []byte(message),
+		StatusCode: http.StatusOK,
+	}, err
+}

template/golang-http-armhf/function/handler.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"time"
+
+	"handler/function"
+	// "github.com/alexellis/golang-http-template/template/golang-http/function"
+	"github.com/openfaas-incubator/go-function-sdk"
+)
+
+func makeRequestHandler() func(http.ResponseWriter, *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var input []byte
+
+		if r.Body != nil {
+			defer r.Body.Close()
+
+			bodyBytes, bodyErr := ioutil.ReadAll(r.Body)
+
+			if bodyErr != nil {
+				log.Printf("Error reading body from request.")
+			}
+
+			input = bodyBytes
+		}
+
+		req := handler.Request{
+			Body:   input,
+			Header: r.Header,
+		}
+
+		result, resultErr := function.Handle(req)
+
+		if result.Header != nil {
+			for k, v := range result.Header {
+				w.Header()[k] = v
+			}
+		}
+
+		if resultErr != nil {
+			log.Print(resultErr)
+			w.WriteHeader(http.StatusInternalServerError)
+		} else {
+			if result.StatusCode == 0 {
+				w.WriteHeader(http.StatusOK)
+			} else {
+				w.WriteHeader(result.StatusCode)
+			}
+		}
+
+		w.Write(result.Body)
+	}
+}
+
+func main() {
+	s := &http.Server{
+		Addr:           fmt.Sprintf(":%d", 8081),
+		ReadTimeout:    3 * time.Second,
+		WriteTimeout:   3 * time.Second,
+		MaxHeaderBytes: 1 << 20, // Max header of 1MB
+	}
+
+	http.HandleFunc("/", makeRequestHandler())
+	log.Fatal(s.ListenAndServe())
+}

template/golang-http-armhf/main.go

@@ -0,0 +1,2 @@
+language: go-armhf
+fprocess: ./handler

template/golang-http-armhf/template.yml

@@ -0,0 +1,38 @@
+FROM golang:1.10.4-alpine3.8 as build
+
+RUN apk --no-cache add curl \
+    && echo "Pulling watchdog binary from Github." \
+    && curl -sSLf https://github.com/openfaas-incubator/of-watchdog/releases/download/0.4.0/of-watchdog-armhf > /usr/bin/fwatchdog \
+    && chmod +x /usr/bin/fwatchdog \
+    && apk del curl --no-cache
+
+RUN mkdir -p /go/src/handler
+WORKDIR /go/src/handler
+COPY . .
+
+# 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; }
+
+RUN CGO_ENABLED=0 GOOS=linux \
+    go build --ldflags "-s -w" -a -installsuffix cgo -o handler . && \
+    go test $(go list ./... | grep -v /vendor/) -cover
+
+FROM alpine:3.8
+# Add non root user and certs
+RUN apk --no-cache add ca-certificates \
+    && addgroup -S app && adduser -S -g app app \
+    && mkdir -p /home/app \
+    && chown app /home/app
+
+WORKDIR /home/app
+
+COPY --from=build /go/src/handler/handler    .
+COPY --from=build /usr/bin/fwatchdog         .
+
+USER app
+
+ENV fprocess="./handler"
+ENV mode="http"
+ENV upstream_url="http://127.0.0.1:8081"
+
+CMD ["./fwatchdog"]

template/golang-http-armhf/vendor/github.com/openfaas-incubator/go-function-sdk/handler.go

@@ -0,0 +1,18 @@
+package function
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+)
+
+func Handle(w http.ResponseWriter, r *http.Request) {
+	body, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusOK)
+	w.Write([]byte(fmt.Sprintf("Hello world, input was: %s", string(body))))
+}

template/golang-middleware-armhf/Dockerfile

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"time"
+
+	"handler/function"
+	//"github.com/openfaas-incubator/golang-http-template/template/golang-middleware/function"
+)
+
+func main() {
+	s := &http.Server{
+		Addr:           fmt.Sprintf(":%d", 8081),
+		ReadTimeout:    3 * time.Second,
+		WriteTimeout:   3 * time.Second,
+		MaxHeaderBytes: 1 << 20, // Max header of 1MB
+	}
+
+	http.HandleFunc("/", function.Handle)
+	log.Fatal(s.ListenAndServe())
+}

template/golang-middleware-armhf/function/handler.go

@@ -0,0 +1,2 @@
+language: golang-middleware-armhf
+fprocess: ./handler