✨ Add extended version command (#37)

Earthfile

@@ -30,13 +30,13 @@ test:
 version:
     FROM alpine
     RUN apk add git
-
     COPY . ./
-
     RUN --no-cache echo $(git describe --always --tags --dirty) > VERSION
-
+    RUN --no-cache echo $(git describe --always --dirty) > COMMIT
     ARG VERSION=$(cat VERSION)
+    ARG COMMIT=$(cat COMMIT)
     SAVE ARTIFACT VERSION VERSION
+    SAVE ARTIFACT COMMIT COMMIT
 
 build-kairos-agent:
     FROM +go-deps
@@ -45,9 +45,11 @@ build-kairos-agent:
     COPY +webui-deps/node_modules ./internal/webui/public/node_modules
     COPY github.com/kairos-io/kairos-docs:main+docs/public ./internal/webui/public
     COPY +version/VERSION ./
+    COPY +version/COMMIT ./
     ARG VERSION=$(cat VERSION)
-    RUN echo $(cat VERSION)
+    ARG COMMIT=$(cat COMMIT)
-    ARG LDFLAGS="-s -w -X 'github.com/kairos-io/kairos/v2/internal/common.VERSION=${VERSION}'"
+    RUN --no-cache echo "Building Version: ${VERSION} and Commit: ${COMMIT}"
+    ARG LDFLAGS="-s -w -X github.com/kairos-io/kairos/v2/internal/common.VERSION=${VERSION} -X github.com/kairos-io/kairos/v2/internal/common.gitCommit=$COMMIT"
     ENV CGO_ENABLED=${CGO_ENABLED}
     RUN go build -o kairos-agent -ldflags "${LDFLAGS}" main.go && upx kairos-agent
     SAVE ARTIFACT kairos-agent kairos-agent AS LOCAL build/kairos-agent

internal/common/version.go

@@ -1,7 +1,34 @@
 package common
 
-var VERSION = "0.0.0"
+import "runtime"
+
+var (
+	VERSION = "v0.0.1"
+	// gitCommit is the git sha1 + dirty if build from a dirty git.
+	gitCommit = "none"
+)
 
 func GetVersion() string {
 	return VERSION
 }
+
+// BuildInfo describes the compiled time information.
+type BuildInfo struct {
+	// Version is the current semver.
+	Version string `json:"version,omitempty"`
+	// GitCommit is the git sha1.
+	GitCommit string `json:"git_commit,omitempty"`
+	// GoVersion is the version of the Go compiler used.
+	GoVersion string `json:"go_version,omitempty"`
+}
+
+// Get returns build info.
+func Get() BuildInfo {
+	v := BuildInfo{
+		Version:   GetVersion(),
+		GitCommit: gitCommit,
+		GoVersion: runtime.Version(),
+	}
+
+	return v
+}

main.go

@@ -580,6 +580,26 @@ The validate command expects a configuration file as its only argument. Local fi
 			return nil
 		},
 	},
+	{
+		Name:        "version",
+		Description: "Print kairos-agent version",
+		Usage:       "Print kairos-agent version",
+		Flags: []cli.Flag{
+			&cli.BoolFlag{
+				Name:    "long",
+				Usage:   "Print long version info",
+				Aliases: []string{"l"},
+			},
+		},
+		Action: func(c *cli.Context) error {
+			if c.Bool("long") {
+				fmt.Printf("%+v\n", common.Get())
+			} else {
+				fmt.Println(common.VERSION)
+			}
+			return nil
+		},
+	},
 }
 
 func main() {