From 03bdff8694f00674f4d0b0b3aa80590a08f6b12c Mon Sep 17 00:00:00 2001
From: Tom Wilkie <tom@weave.works>
Date: Fri, 5 Jun 2015 14:56:31 +0000
Subject: [PATCH] Add shout proxy to example app.

---
 .gitignore                            |  2 -
 experimental/example/.gitignore       |  3 ++
 experimental/example/Makefile         |  8 +++-
 experimental/example/shout/Dockerfile |  5 +++
 experimental/example/shout/shout.go   | 62 +++++++++++++++++++++++++++
 5 files changed, 76 insertions(+), 4 deletions(-)
 create mode 100644 experimental/example/.gitignore
 create mode 100644 experimental/example/shout/Dockerfile
 create mode 100644 experimental/example/shout/shout.go

diff --git a/.gitignore b/.gitignore
index d9e1c3de5..e14a70224 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,8 +44,6 @@ experimental/genreport/genreport
 experimental/graphviz/graphviz
 experimental/oneshot/oneshot
 experimental/_integration/_integration
-experimental/example/qotd/qotd
-experimental/example/goapp/app
 *sublime-project
 *sublime-workspace
 *npm-debug.log
diff --git a/experimental/example/.gitignore b/experimental/example/.gitignore
new file mode 100644
index 000000000..4eba73260
--- /dev/null
+++ b/experimental/example/.gitignore
@@ -0,0 +1,3 @@
+qotd/qotd
+goapp/app
+shout/shout
diff --git a/experimental/example/Makefile b/experimental/example/Makefile
index 7b3a69f39..2d453335e 100644
--- a/experimental/example/Makefile
+++ b/experimental/example/Makefile
@@ -4,13 +4,17 @@ CFLAGS=-g -lpthread
 %.o: %.c
 	$(CC) -c -o $@ $< $(CFLAGS)
 
-all: qotd/qotd goapp/app
+all: qotd/qotd goapp/app shout/shout
 
 qotd/qotd: qotd/qotd.o
 	gcc -o $@ $< $(CFLAGS)
 
 goapp/app: goapp/app.go
-	go build -ldflags "-extldflags \"-static\"" -tags netgo -o goapp/app ./goapp
+shout/shout: shout/shout.go
+
+shout/shout goapp/app:
+	go get -tags netgo ./$(@D)
+	go build -ldflags "-extldflags \"-static\"" -tags netgo -o $@ ./$(@D)
 
 clean:
 	rm -f qotd/*.o qotd/qotd goapp/app
diff --git a/experimental/example/shout/Dockerfile b/experimental/example/shout/Dockerfile
new file mode 100644
index 000000000..1b9be7638
--- /dev/null
+++ b/experimental/example/shout/Dockerfile
@@ -0,0 +1,5 @@
+FROM gliderlabs/alpine
+MAINTAINER Weaveworks Inc <help@weave.works>
+WORKDIR /home/weave
+ADD shout /home/weave/
+ENTRYPOINT ["/home/weave/shout"]
diff --git a/experimental/example/shout/shout.go b/experimental/example/shout/shout.go
new file mode 100644
index 000000000..5014b5ebe
--- /dev/null
+++ b/experimental/example/shout/shout.go
@@ -0,0 +1,62 @@
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+
+	SHOUTCLOUD "github.com/richo/GOSHOUT"
+)
+
+type requestResponse struct {
+	Text string `json:"text"`
+}
+
+func main() {
+	var (
+		addr = flag.String("addr", ":8080", "HTTP listen address")
+	)
+	flag.Parse()
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		var req requestResponse
+		err := json.NewDecoder(r.Body).Decode(&req)
+		if err != nil {
+			w.WriteHeader(http.StatusTeapot)
+			return
+		}
+
+		req.Text, err = SHOUTCLOUD.UPCASE(req.Text)
+		if err != nil {
+			w.WriteHeader(http.StatusTeapot)
+			return
+		}
+
+		w.WriteHeader(http.StatusOK)
+		json.NewEncoder(w).Encode(&req)
+	})
+
+	errc := make(chan error)
+
+	go func() {
+		log.Printf("listening on %s", *addr)
+		errc <- http.ListenAndServe(*addr, nil)
+	}()
+
+	go func() {
+		errc <- interrupt()
+	}()
+
+	log.Printf("%v", <-errc)
+}
+
+func interrupt() error {
+	c := make(chan os.Signal)
+	signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
+	return fmt.Errorf("%s", <-c)
+}