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Add Go template capability for creating functions #145

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merged 4 commits into from Oct 6, 2017
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Just for now

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@@ -4,12 +4,12 @@ WORKDIR /go/src/github.com/openfaas/faas-cli
COPY . .
# Run a gofmt and exclude all vendored code.
RUN test -z "$(gofmt -l $(find . -type f -name '*.go' -not -path "./vendor/*"))"
RUN test -z "$(gofmt -l $(find . -type f -name '*.go' -not -path "./vendor/*"))" || { echo "Run \"gofmt -s -w\" on your Golang code"; exit 1; }
RUN VERSION=$(git describe --all --exact-match `git rev-parse HEAD` | grep tags | sed 's/tags\///') \
&& GIT_COMMIT=$(git rev-list -1 HEAD) \
&& CGO_ENABLED=0 GOOS=linux go build --ldflags "-s -w -X github.com/openfaas/faas-cli/commands.GitCommit=${GIT_COMMIT} -X github.com/openfaas/faas-cli/commands.Version=${VERSION}" -a -installsuffix cgo -o faas-cli .
RUN go test ./... -cover
&& CGO_ENABLED=0 GOOS=linux go build --ldflags "-s -w -X github.com/openfaas/faas-cli/commands.GitCommit=${GIT_COMMIT} -X github.com/openfaas/faas-cli/commands.Version=${VERSION}" -a -installsuffix cgo -o faas-cli . \
&& go test $(go list ./... | grep -v /vendor/ | grep -v /template/) -cover
FROM alpine:latest
RUN apk --no-cache add ca-certificates
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@@ -2,5 +2,9 @@
build:
./build.sh
build_redist:
./build_redist.sh
unit_test:
go test $(shell go list ./... | grep -v /vendor/ | grep -v /template/) -cover
View
@@ -15,7 +15,7 @@ import (
func BuildImage(image string, handler string, functionName string, language string, nocache bool, squash bool) {
switch language {
case "node", "python", "ruby", "csharp", "python3":
case "node", "python", "ruby", "csharp", "python3", "go":
tempPath := createBuildTemplate(functionName, handler, language)
fmt.Printf("Building: %s with %s template. Please wait..\n", image, language)
View
@@ -52,6 +52,7 @@ func runNewFunction(cmd *cobra.Command, args []string) {
- ruby
- csharp
- Dockerfile
- go
Or alternatively create a folder containing a Dockerfile, then pick
the "Dockerfile" lang type in your YAML file.
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@@ -0,0 +1,36 @@
FROM golang:1.8.3-alpine
RUN apk --no-cache add curl \
&& echo "Pulling watchdog binary from Github." \
&& curl -sSL https://github.com/openfaas/faas/releases/download/0.6.5/fwatchdog > /usr/bin/fwatchdog \
&& chmod +x /usr/bin/fwatchdog \
&& apk del curl --no-cache

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@austinfrey

austinfrey Oct 6, 2017

Contributor

one quick suggestion, some other pull requests that are pending are opting to run the functions as non-root users. some examples here by @ericstoekl #91.

@austinfrey

austinfrey Oct 6, 2017

Contributor

one quick suggestion, some other pull requests that are pending are opting to run the functions as non-root users. some examples here by @ericstoekl #91.

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@nicholasjackson

nicholasjackson Oct 6, 2017

Contributor

Ha, I should know that I was one of the guilty parties behind caninothazroot.

Not even following my own advice

@nicholasjackson

nicholasjackson Oct 6, 2017

Contributor

Ha, I should know that I was one of the guilty parties behind caninothazroot.

Not even following my own advice

This comment has been minimized.

@nicholasjackson

nicholasjackson Oct 6, 2017

Contributor

I have just added an additional commit which corrects this issue

@nicholasjackson

nicholasjackson Oct 6, 2017

Contributor

I have just added an additional commit which corrects this issue

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/*"))" || { 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 ./... -cover
FROM alpine:latest

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@alexellis

alexellis Oct 6, 2017

Member

Please pin to 3.6 - tracking :latest might cause problems when Alpine pushes 3.7.

@alexellis

alexellis Oct 6, 2017

Member

Please pin to 3.6 - tracking :latest might cause problems when Alpine pushes 3.7.

RUN apk --no-cache add ca-certificates
# Add non root user
RUN addgroup -S app && adduser -S -g app app
RUN mkdir -p /home/app
RUN chown app /home/app
WORKDIR /home/app
COPY --from=0 /go/src/handler/handler .
COPY --from=0 /usr/bin/fwatchdog .
USER app
ENV fprocess="./handler"
CMD ["./fwatchdog"]
@@ -0,0 +1,10 @@
package function
import (
"fmt"
)
// Handle a serverless request
func Handle(req []byte) string {
return fmt.Sprintf("Hello, Go. You said: %s", string(req))
}
@@ -0,0 +1,12 @@
package function
import "testing"
func TestHandleReturnsCorrectResponse(t *testing.T) {
expected := "Hello, Go. You said: Hello World"
resp := Handle([]byte("Hello World"))
if resp != expected {
t.Fatalf("Expected: %v, Got: %v", expected, resp)
}
}
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@@ -0,0 +1,19 @@
package main
import (
"fmt"
"io/ioutil"
"log"
"os"
"handler/function"
)
func main() {
input, err := ioutil.ReadAll(os.Stdin)
if err != nil {
log.Fatalf("Unable to read standard input: %s", err.Error())
}
fmt.Println(function.Handle(input))
}
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