cebulacamp/landing: build and push backend

Change-Id: I1336fb2fe52de7c42e5de0c4f1e05f42c32a9777

hswaw/cebulacamp/landing/BUILD.bazel

@@ -0,0 +1,34 @@
+load("@io_bazel_rules_docker//container:container.bzl", "container_image", "container_push")
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+load("@io_bazel_rules_go//extras:embed_data.bzl", "go_embed_data")
+
+go_embed_data(
+    name = "static",
+    srcs = ["index.html", "style/main.css", "cebula2020.jpeg", "hotel-orle.jpg"],
+    package = "static",
+)
+
+# keep
+go_library(
+    name = "static_go",
+    srcs = [":static"],
+    importpath = "code.hackerspace.pl/hscloud/hswaw/cebulacamp/landing/static",
+    visibility = ["//visibility:public"],
+)
+
+container_image(
+    name="latest",
+    base="@prodimage-bionic//image",
+    files = ["//hswaw/cebulacamp/landing/backend:backend"],
+    directory = "/hscloud/hswaw/cebulacamp/landing",
+    entrypoint = ["/hscloud/hswaw/cebulacamp/landing/backend"],
+)
+
+container_push(
+    name = "push",
+    image = ":latest",
+    format = "Docker",
+    registry = "registry.k0.hswaw.net",
+    repository = "q3k/cebulacamp-landing",
+    tag = "{BUILD_TIMESTAMP}-{STABLE_GIT_COMMIT}",
+)

hswaw/cebulacamp/landing/backend/BUILD.bazel

@@ -0,0 +1,24 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["main.go"],
+    importpath = "code.hackerspace.pl/hscloud/hswaw/cebulacamp/landing/backend",
+    visibility = ["//visibility:private"],
+    deps = [
+        "@com_github_golang_glog//:go_default_library",
+        "//hswaw/cebulacamp/landing:static_go", # keep
+    ],
+)
+
+go_binary(
+    name = "backend",
+    embed = [":go_default_library"],
+    visibility = ["//visibility:public"],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["main_test.go"],
+    embed = [":go_default_library"],
+)

hswaw/cebulacamp/landing/backend/main.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"mime"
+	"net/http"
+	"strings"
+
+	"github.com/golang/glog"
+
+	"code.hackerspace.pl/hscloud/hswaw/cebulacamp/landing/static"
+)
+
+var (
+	flagBind string
+)
+
+func init() {
+	flag.Set("logtostderr", "true")
+}
+
+func main() {
+	flag.StringVar(&flagBind, "bind", "0.0.0.0:8080", "Address at which to serve HTTP requests")
+	flag.Parse()
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		path := r.URL.Path
+		if path == "/" {
+			path = "/index.html"
+		}
+		path = strings.TrimPrefix(path, "/")
+		staticPath := fmt.Sprintf("hswaw/cebulacamp/landing/%s", path)
+		if data, ok := static.Data[staticPath]; ok {
+			parts := strings.Split(path, ".")
+			ext := fmt.Sprintf(".%s", parts[len(parts)-1])
+			t := mime.TypeByExtension(ext)
+			w.Header().Set("Content-Type", t)
+			w.Write(data)
+		} else {
+			http.NotFound(w, r)
+		}
+	})
+
+	glog.Infof("Starting up at %v", flagBind)
+	err := http.ListenAndServe(flagBind, nil)
+	if err != nil {
+		glog.Exit(err)
+	}
+}