feat: add dynamic versioning

Author: kmendell

.github/workflows/build-release.yml

@@ -193,21 +193,31 @@ jobs:
       - name: Download dependencies
         run: go mod download
 
+      - name: Set version
+        id: version
+        run: |
+          if [[ "${{ github.ref_type }}" == "tag" ]]; then
+            VERSION=${GITHUB_REF_NAME#v}
+          elif [ -f .version ]; then
+            VERSION=$(cat .version)
+          else
+            VERSION="dev-${GITHUB_SHA::8}"
+          fi
+          echo "VERSION=${VERSION}" >> $GITHUB_OUTPUT
+
       - name: Build binary
         env:
           GOOS: ${{ matrix.goos }}
           GOARCH: ${{ matrix.goarch }}
           CGO_ENABLED: 0
         run: |
           mkdir -p bin
+          BUILD_DATE=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
 
-          # Set version info
-          VERSION=${GITHUB_REF#refs/tags/}
-          if [[ ! "$VERSION" =~ ^v[0-9] ]]; then
-            VERSION="dev-${GITHUB_SHA::8}"
-          fi
-
-          go build -v -ldflags="-w -s -X main.version=${VERSION} -X main.commit=${GITHUB_SHA}" \
+          go build -v -ldflags="-w -s \
+            -X github.com/ofkm/arcane-agent/internal/version.Version=${{ steps.version.outputs.VERSION }} \
+            -X github.com/ofkm/arcane-agent/internal/version.Commit=${GITHUB_SHA} \
+            -X github.com/ofkm/arcane-agent/internal/version.Date=${BUILD_DATE}" \
             -o bin/${{ env.BINARY_NAME }}-${{ matrix.platform }}${{ matrix.extension }} \
             ./cmd/agent
 
@@ -250,6 +260,7 @@ jobs:
             type=semver,pattern={{major}}.{{minor}}
             type=semver,pattern={{major}}
             type=sha
+            type=raw,value=latest,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v6

.version

@@ -1 +1 @@
-1.1.0
+1.2.0

Makefile

@@ -16,6 +16,7 @@ import (
 
 	"github.com/ofkm/arcane-agent/internal/config"
 	"github.com/ofkm/arcane-agent/internal/tasks"
+	"github.com/ofkm/arcane-agent/internal/version"
 	"github.com/ofkm/arcane-agent/pkg/types"
 )
 
@@ -80,7 +81,7 @@ func (h *HTTPClient) registerAgent() error {
 		"hostname":     hostname,
 		"platform":     runtime.GOOS,
 		"arch":         runtime.GOARCH,
-		"version":      "1.1.1",
+		"version":      version.GetVersion(),
 		"capabilities": []string{"docker", "compose"},
 	}
 

internal/agent/http_client.go

@@ -0,0 +1,47 @@
+package version
+
+import (
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+)
+
+// Build-time variables (set via ldflags)
+var (
+	Version = "dev"
+	Commit  = "unknown"
+	Date    = "unknown"
+)
+
+// GetVersion returns the version, preferring build-time version over version file
+func GetVersion() string {
+	if Version != "dev" {
+		return Version
+	}
+
+	// Try to read from .version file in project root
+	_, filename, _, ok := runtime.Caller(0)
+	if !ok {
+		return "dev"
+	}
+
+	// Go up to project root from internal/version/version.go
+	projectRoot := filepath.Dir(filepath.Dir(filepath.Dir(filename)))
+	versionFile := filepath.Join(projectRoot, ".version")
+
+	if data, err := os.ReadFile(versionFile); err == nil {
+		return strings.TrimSpace(string(data))
+	}
+
+	return "dev"
+}
+
+// GetFullVersion returns version with commit and date info
+func GetFullVersion() string {
+	version := GetVersion()
+	if Commit != "unknown" {
+		version += "+" + Commit
+	}
+	return version
+}