add version and revision checking

Makefile

@@ -1,5 +1,7 @@
 SHELL=/bin/bash
-
+VERSION=$(shell cat version)
+REVISION=$(shell [ -n "$(git status --untracked-files=no --porcelain)" ] && git rev-parse --short=12 HEAD || echo "no_revision")
+GOFLAGS=-ldflags "-X main.Version=${VERSION} -X main.Revision=${REVISION}"
 
 autoinstall: 
 	./install_helper.sh
@@ -39,7 +41,7 @@ install: build | $(HOME)/.resh $(HOME)/.resh/bin $(HOME)/.config $(HOME)/.resh/r
 	##########################################################
 	#
 	# WHAT'S NEXT
-	# Please close all open terminal windows (or reload your rc files)
+	# Please RESTART ALL OPEN TERMINAL WINDOWS (or reload your rc files)
 	# Your resh history is located in `~/.resh_history.json`
 	# You can look at it using e.g. `tail -f ~/.resh_history.json | jq`
 	#
@@ -54,10 +56,10 @@ uninstall:
 	-rm -rf ~/.resh/
 
 resh-daemon: daemon/resh-daemon.go common/resh-common.go
-	go build -o $@ $<
+	go build ${GOFLAGS} -o $@ $<
 
 resh-collect: collect/resh-collect.go common/resh-common.go
-	go build -o $@ $<
+	go build ${GOFLAGS} -o $@ $<
 
 
 $(HOME)/.resh $(HOME)/.resh/bin $(HOME)/.config:

collect/resh-collect.go

@@ -4,12 +4,13 @@ import (
 	"bytes"
 	"encoding/json"
 	"flag"
+	"fmt"
 	"github.com/BurntSushi/toml"
 	common "github.com/curusarn/resh/common"
 	"io/ioutil"
 	"log"
 	"net/http"
-	//	"os"
+	"os"
 	//  "os/exec"
 	"os/user"
 	"path/filepath"
@@ -17,6 +18,9 @@ import (
 	"strings"
 )
 
+var Version string
+var Revision string
+
 func main() {
 	usr, _ := user.Current()
 	dir := usr.HomeDir
@@ -29,6 +33,11 @@ func main() {
 	if _, err := toml.DecodeFile(configPath, &config); err != nil {
 		log.Fatal("Error reading config:", err)
 	}
+	showVersion := flag.Bool("version", false, "Show version and exit")
+	showRevision := flag.Bool("revision", false, "Show git revision and exit")
+
+	requireVersion := flag.String("requireVersion", "", "abort if version doesn't match")
+	requireRevision := flag.String("requireRevision", "", "abort if revision doesn't match")
 
 	cmdLine := flag.String("cmdLine", "", "command line")
 	exitCode := flag.Int("exitCode", -1, "exit code")
@@ -84,6 +93,26 @@ func main() {
 		"on session start $EPOCHREALTIME")
 	flag.Parse()
 
+	if *showVersion == true {
+		fmt.Println(Version)
+		os.Exit(0)
+	}
+	if *showRevision == true {
+		fmt.Println(Revision)
+		os.Exit(0)
+	}
+	if *requireVersion != "" && *requireVersion != Version {
+		log.Fatal("Please restart/reload this terminal session " +
+			"(resh version: " + Version +
+			" resh version of this terminal session: " + *requireVersion +
+			")")
+	}
+	if *requireRevision != "" && *requireRevision != Revision {
+		log.Fatal("Please restart/reload this terminal session " +
+			"(resh revision: " + Revision +
+			" resh revision of this terminal session: " + *requireRevision +
+			")")
+	}
 	realtimeAfter, err := strconv.ParseFloat(*rta, 64)
 	if err != nil {
 		log.Fatal("Flag Parsing error (rta):", err)
@@ -185,13 +214,16 @@ func main() {
 		GitRealDir:      gitRealDir,
 		GitOriginRemote: *gitRemote,
 		MachineId:       readFileContent(machineIdPath),
-		ReshUuid:        readFileContent(reshUuidPath),
 
 		OsReleaseId:         *osReleaseId,
 		OsReleaseVersionId:  *osReleaseVersionId,
 		OsReleaseIdLike:     *osReleaseIdLike,
 		OsReleaseName:       *osReleaseName,
 		OsReleasePrettyName: *osReleasePrettyName,
+
+		ReshUuid:     readFileContent(reshUuidPath),
+		ReshVersion:  Version,
+		ReshRevision: Revision,
 	}
 	sendRecord(rec, strconv.Itoa(config.Port))
 }
@@ -293,3 +325,4 @@ func getTimezoneOffsetInSeconds(zone string) float64 {
 // 	}
 // 	return strings.TrimSuffix(string(out), "\n")
 // }
+// }

common/resh-common.go

@@ -50,13 +50,16 @@ type Record struct {
 	GitRealDir      string `json:"gitRealDir"`
 	GitOriginRemote string `json:"gitOriginRemote"`
 	MachineId       string `json:"machineId"`
-	ReshUuid        string `json:"reshUuid"`
 
 	OsReleaseId         string `json:"osReleaseId"`
 	OsReleaseVersionId  string `json:"osReleaseVersionId"`
 	OsReleaseIdLike     string `json:"osReleaseIdLike"`
 	OsReleaseName       string `json:"osReleaseName"`
 	OsReleasePrettyName string `json:"osReleasePrettyName"`
+
+	ReshUuid     string `json:"reshUuid"`
+	ReshVersion  string `json:"reshVersion"`
+	ReshRevision string `json:"reshRevision"`
 }
 
 type Config struct {

daemon/resh-daemon.go

@@ -16,7 +16,13 @@ import (
 	"strings"
 )
 
+var Version string
+var Revision string
+
 func main() {
+	log.Println("Daemon starting... \n" +
+		"version: " + Version +
+		" revision: " + Revision)
 	usr, _ := user.Current()
 	dir := usr.HomeDir
 	pidfilePath := filepath.Join(dir, ".resh/resh.pid")
@@ -67,7 +73,8 @@ func main() {
 }
 
 func statusHandler(w http.ResponseWriter, r *http.Request) {
-	w.Write([]byte("OK\n"))
+	w.Write([]byte("OK; version: " + Version +
+		"; revision: " + Revision + "\n"))
 	log.Println("Status OK")
 }
 

shellrc.sh

@@ -96,6 +96,9 @@ elif [ $__RESH_MACOS -eq 1 ]; then
     __RESH_RT_SESS_SINCE_BOOT=$(sysctl -n kern.boottime | awk '{print $4}' | sed 's/,//g')
 fi
 
+__RESH_VERSION=$(resh-collect -version)
+__RESH_REVISION=$(resh-collect -revision)
+
 __resh_run_daemon
 
 __resh_preexec() {
@@ -149,7 +152,9 @@ __resh_precmd() {
     __RESH_TZ_AFTER=$(date +%z)
     __RESH_PWD_AFTER="$PWD"
     if [ -n "${__RESH_COLLECT}" ]; then
-        resh-collect -cmdLine "$__RESH_CMDLINE" \
+        resh-collect -requireVersion "$__RESH_VERSION" \
+                     -requireRevision "$__RESH_REVISION" \
+                     -cmdLine "$__RESH_CMDLINE" \
                      -exitCode "$__RESH_EXIT_CODE" \
                      -shell "$__RESH_SHELL" \
                      -uname "$__RESH_UNAME" \