standalone forwarder build tools

Makefile

@@ -0,0 +1,26 @@
+.PHONY: dep build generate clean
+
+GOOS = linux
+GOARCH = amd64
+TAG = $(shell git describe --tags --always --abbrev=0)
+COMMIT = $(shell git rev-parse --short HEAD)
+CODENAME = hotwings
+
+dep:
+	dep ensure
+
+build:
+	GOOS=$(GOOS) GOARCH=$(GOARCH) go build \
+                -ldflags "-X github.com/DataDog/datadog-agent/pkg/version.Commit=$(COMMIT) \
+                          -X github.com/DataDog/datadog-agent/pkg/version.AgentVersion=$(TAG)+$(CODENAME)" \
+                -o cmd/dogstatsd/dist/dogstatsd_$(GOOS)_$(GOARCH) \
+		cmd/dogstatsd/{main.go,main_nix.go}
+
+build-darwin: GOOS=darwin
+build-darwin: build
+
+generate:
+	go generate cmd/dogstatsd/*.go
+
+clean:
+	rm -rf cmd/dogstatsd/dist/*

README.forwarder.md

@@ -0,0 +1,38 @@
+Standalone Dogstatsd Forwarder
+==============================
+This repo extends the DataDog/datadog-agent to build a standalone forwarder.
+
+## Prerequisites
+Ensure you have all required dependencies. This requires `dep` to fulfill the
+dependencies. With `dep` installed, and on your PATH you can use Makefile:
+
+    $ make dep
+
+## Build
+Building can be done with the via the Makefile. To build a linux release:
+
+    $ make build
+
+To build a darwin binary:
+
+    $ make build-darwin
+
+A default config file can be generated with via the Makefile:
+
+    $ make generate
+
+Note that all build artifacts can be found under the `cmd/dogstatsd/dist/`
+directory.
+
+## Update Code
+This repo just follows the upstream DataDog/datadog-agent repo with some added
+files to ease building a standalone forwarder, the code can be updated with git:
+
+    $ git fetch upstream master
+    $ git merge --ff-only upstream/master
+    $ git push origin
+
+The `upstream` is configured with git:
+
+    $ git remote add upstream https://github.com/DataDog/datadog-agent.git
+

README.md

@@ -1,5 +1,5 @@
 # Datadog Agent
-
+**SEE [README.forwarder.md](README.forwarder.md) for instructions specific to this repo**
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