Go

.gitignore

@@ -4,3 +4,5 @@ bazel-out
 bazel-testlogs
 
 __pycache__
+
+.idea

WORKSPACE.bazel

@@ -14,3 +14,41 @@ pip_install(
    name = "python_deps",
    requirements = "//third_party:requirements.txt",
 )
+
+### GO
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "io_bazel_rules_go",
+    sha256 = "2b1641428dff9018f9e85c0384f03ec6c10660d935b750e3fa1492a281a53b0f",
+    urls = [
+        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.29.0/rules_go-v0.29.0.zip",
+        "https://github.com/bazelbuild/rules_go/releases/download/v0.29.0/rules_go-v0.29.0.zip",
+    ],
+)
+
+http_archive(
+    name = "bazel_gazelle",
+    sha256 = "de69a09dc70417580aabf20a28619bb3ef60d038470c7cf8442fafcf627c21cb",
+    urls = [
+        "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.24.0/bazel-gazelle-v0.24.0.tar.gz",
+        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.24.0/bazel-gazelle-v0.24.0.tar.gz",
+    ],
+)
+
+load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_dependencies")
+load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies", "go_repository")
+
+go_repository(
+    name = "github_com_gorilla_mux",
+    importpath = "github.com/gorilla/mux",
+    sum = "h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=",
+    version = "v1.8.0",
+)
+
+go_rules_dependencies()
+
+go_register_toolchains(version = "1.17.2")
+
+gazelle_dependencies(go_repository_default_config = "@//:WORKSPACE.bazel")

projects/greeter/BUILD.bazel

@@ -0,0 +1,14 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "greeter",
+    importpath = "github.com/kriscfoster/multi-language-bazel-monorepo/projects/greeter",
+    srcs = ["greeter.go"],
+    visibility = ["//projects/my-go-app:__pkg__"],
+)
+
+go_test(
+  name = "greeter_test",
+  srcs = ["greeter_test.go"],
+  embed = [":greeter"]
+)

projects/greeter/greeter.go

@@ -0,0 +1,5 @@
+package greeter
+
+func Greet() string {
+	return "Hello World!"
+}

projects/greeter/greeter_test.go

@@ -0,0 +1,11 @@
+package greeter
+
+import "testing"
+
+func TestGreeter(t *testing.T) {
+	expected := "Hello World!"
+	greeting := Greet()
+	if greeting != expected {
+		t.Errorf("expected %q but got %q", expected, greeting)
+	}
+}

projects/my-go-app/BUILD.bazel

@@ -0,0 +1,10 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
+
+go_binary(
+    name = "my-go-app",
+    srcs = ["main.go"],
+    deps = [
+      "//projects/greeter:greeter",
+      "@github_com_gorilla_mux//:mux",
+    ]
+)

projects/my-go-app/main.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+    "net/http"
+    "log"
+    "github.com/gorilla/mux"
+    "github.com/kriscfoster/multi-language-bazel-monorepo/projects/greeter"
+)
+
+func YourHandler(w http.ResponseWriter, r *http.Request) {
+    log.Println("received request")
+    w.Write([]byte(greeter.Greet()))
+}
+
+func main() {
+    r := mux.NewRouter()
+    // Routes consist of a path and a handler function.
+    r.HandleFunc("/", YourHandler)
+
+    // Bind to a port and pass our router in
+    log.Fatal(http.ListenAndServe(":8000", r))
+}