Merge branch 'func_logs2' into 'master'

Func logs feature

See merge request !66

examples/tutorial/logging/Dockerfile

@@ -0,0 +1,8 @@
+FROM funcy/go:dev as build-stage
+WORKDIR /function
+ADD . /src
+RUN cd /src && go build -o func
+FROM funcy/go
+WORKDIR /function
+COPY --from=build-stage /src/func /function/
+ENTRYPOINT ["./func"]

examples/tutorial/logging/func.yaml

@@ -0,0 +1,5 @@
+name: funcy/stderr-logging
+version: 0.0.1
+runtime: go
+entrypoint: ./func
+path: /stderr-logging

examples/tutorial/logging/main.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	"fmt"
+	"encoding/json"
+	"os"
+	"math/rand"
+)
+
+const lBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+
+type OutputSize struct {
+	Size int `json:"size"`
+}
+
+
+func RandStringBytes(n int) string {
+	b := make([]byte, n)
+	for i := range b {
+		b[i] = lBytes[rand.Intn(len(lBytes))]
+	}
+	return string(b)
+}
+
+func main() {
+	out := &OutputSize{Size: 64 * 1024}
+	json.NewDecoder(os.Stdin).Decode(out)
+	fmt.Fprintln(os.Stderr, RandStringBytes(out.Size))
+}

examples/tutorial/logging/sample.payload.json

@@ -0,0 +1,3 @@
+{
+    "size": 8
+}