From 22d3f1a4f9828b55fac3fcaa4e7659afdcb5b1d5 Mon Sep 17 00:00:00 2001
From: Benson Wong <mostlygeek@gmail.com>
Date: Sat, 14 Dec 2024 09:53:13 -0800
Subject: [PATCH] Change versioning to use git commits counts instead of semver

- less work for me
- more frequent releases
---
 .github/workflows/release.yml | 16 ++++++++++------
 .goreleaser.yaml              |  3 +++
 Makefile                      | 14 ++++++++++++--
 llama-swap.go                 | 10 ++++++++++
 4 files changed, 35 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index ffaef11..271de4f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -2,8 +2,8 @@ name: goreleaser
 
 on:
   push:
-    tags:
-      - '*'
+    branches:
+      - main
 
 permissions:
   contents: write
@@ -20,14 +20,18 @@ jobs:
       -
         name: Set up Go
         uses: actions/setup-go@v5
+
+      - name: Get commit count
+        id: get_commit_count
+        run: echo "COMMIT_COUNT=$(git rev-list --count HEAD)" >> $GITHUB_OUTPUT
+
       -
         name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v6
         with:
-          # either 'goreleaser' (default) or 'goreleaser-pro'
           distribution: goreleaser
-          # 'latest', 'nightly', or a semver
-          version: '~> v2'
-          args: release --clean
+          version: latest
+          args: release --clean --snapshot
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GORELEASER_CURRENT_TAG: v${{ steps.get_commit_count.outputs.COMMIT_COUNT }}
diff --git a/.goreleaser.yaml b/.goreleaser.yaml
index cdb1c67..9c6c680 100644
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@@ -1,5 +1,8 @@
 version: 2
 
+release:
+  name_template: "v{{.Env.GORELEASER_CURRENT_TAG}}"
+
 builds:
   - env:
       - CGO_ENABLED=0
diff --git a/Makefile b/Makefile
index 47c8999..f3c5216 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,16 @@
 APP_NAME = llama-swap
 BUILD_DIR = build
 
+# Get the current Git hash
+GIT_HASH := $(shell git rev-parse --short HEAD)
+ifneq ($(shell git status --porcelain),)
+    # There are untracked changes
+    GIT_HASH := $(GIT_HASH)+
+endif
+
+# Get the build number from the commit count on the main branch
+COMMIT_COUNT := $(shell git rev-list --count HEAD)
+
 # Default target: Builds binaries for both OSX and Linux
 all: mac linux simple-responder
 
@@ -18,12 +28,12 @@ test-all:
 # Build OSX binary
 mac:
 	@echo "Building Mac binary..."
-	GOOS=darwin GOARCH=arm64 go build -o $(BUILD_DIR)/$(APP_NAME)-darwin-arm64
+	GOOS=darwin GOARCH=arm64 go build -ldflags="-X main.GIT_HASH=${GIT_HASH} -X main.COMMIT_COUNT=${COMMIT_COUNT}" -o $(BUILD_DIR)/$(APP_NAME)-darwin-arm64
 
 # Build Linux binary
 linux:
 	@echo "Building Linux binary..."
-	GOOS=linux GOARCH=amd64 go build -o $(BUILD_DIR)/$(APP_NAME)-linux-amd64
+	GOOS=linux GOARCH=amd64 go build -ldflags="-X main.GIT_HASH=${GIT_HASH} -X main.COMMIT_COUNT=${COMMIT_COUNT}" -o $(BUILD_DIR)/$(APP_NAME)-linux-amd64
 
 # for testing proxy.Process
 simple-responder:
diff --git a/llama-swap.go b/llama-swap.go
index b7444d8..88e10f3 100644
--- a/llama-swap.go
+++ b/llama-swap.go
@@ -9,13 +9,23 @@ import (
 	"github.com/mostlygeek/llama-swap/proxy"
 )
 
+// see Makefile which injects new values at build time
+var GIT_HASH string = "abcd1234"
+var COMMIT_COUNT string = "0-dev"
+
 func main() {
 	// Define a command-line flag for the port
 	configPath := flag.String("config", "config.yaml", "config file name")
 	listenStr := flag.String("listen", ":8080", "listen ip/port")
+	showVersion := flag.Bool("version", false, "show version of build")
 
 	flag.Parse() // Parse the command-line flags
 
+	if *showVersion {
+		fmt.Printf("version: v%s (%s)\n", COMMIT_COUNT, GIT_HASH)
+		os.Exit(0)
+	}
+
 	config, err := proxy.LoadConfig(*configPath)
 	if err != nil {
 		fmt.Printf("Error loading config: %v\n", err)