Initial commit

version.go

@@ -0,0 +1,17 @@
+package main
+
+import goutils "github.com/jkaninda/go-utils"
+
+// version is the build version. Set it at build time with:
+//
+//	go build -ldflags "-X main.version=1.0.0"
+//
+// It is overridable at runtime with APP_VERSION — handy for the canary demo,
+// where you run two otherwise-identical builds (e.g. 1.0.0 and 2.0.0) and watch
+// which one serves each request.
+var version = "dev"
+
+// resolveVersion returns APP_VERSION when set, otherwise the build version.
+func resolveVersion() string {
+	return goutils.Env("APP_VERSION", version)
+}