Parse deletions per-deviceID

libmuttonserver.go

@@ -18,7 +18,7 @@ func main() {
 	switch args[1] {
 	case "fetch":
 		// print all information needed for syncing to stdout for interpretation by the client
-		sync.GetRemoteDataFromServer()
+		sync.GetRemoteDataFromServer(args[2])
 	case "shear":
 		// shear an entry from the server and add it to the deletions directory
 		deviceIDTargetLocation := strings.Split(args[2], "\x1d")

src/sync/client.go

@@ -102,7 +102,8 @@ func GetSSHOutput(cmd string, manualSync bool) string {
 // getRemoteDataFromClient returns a map of remote entries to their modification times, a list of remote folders, and a list of queued deletions
 func getRemoteDataFromClient(manualSync bool) (map[string]int64, []string, []string) {
 	// get remote output over SSH
-	output := GetSSHOutput("libmuttonserver fetch", manualSync)
+	clientDeviceID, _ := os.ReadDir(backend.ConfigDir + backend.PathSeparator + "devices")
+	output := GetSSHOutput("libmuttonserver fetch "+clientDeviceID[0].Name(), manualSync)
 
 	// split output into slice based on occurrences of "\x1d"
 	outputSlice := strings.Split(output, "\x1d")

src/sync/common.go

@@ -62,7 +62,7 @@ func getModTimes(entryList []string) []int64 {
 // if running on the server, it will also add the target to the deletions list
 // if running on the client, it will call the server to add the target to the deletions list
 func Shear(targetLocationIncomplete string, deviceID string) {
-	// get the full targetLocation path and remove the target
+	// get the full targetLocation path and remove the target TODO move so that the target is not removed if the server fails to add it to the deletions list
 	targetLocationComplete := backend.TargetLocationFormat(targetLocationIncomplete[1:])
 	backend.TargetIsFile(targetLocationComplete, true, 0) // needed because os.RemoveAll does not return an error if target does not exist
 	err := os.RemoveAll(targetLocationComplete)

src/sync/server.go

@@ -4,12 +4,13 @@ import (
 	"fmt"
 	"github.com/rwinkhart/MUTN/src/backend"
 	"os"
+	"strings"
 )
 
 // GetRemoteDataFromServer prints to stdout the remote entries, mod times, folders, and deletions
 // lists in output are separated by "\x1d"
 // output is meant to be captured over SSH for interpretation by the client
-func GetRemoteDataFromServer() {
+func GetRemoteDataFromServer(clientDeviceID string) {
 	entryList, dirList := WalkEntryDir()
 	modList := getModTimes(entryList)
 	deletionsList, err := os.ReadDir(backend.ConfigDir + backend.PathSeparator + "deletions")
@@ -33,6 +34,13 @@ func GetRemoteDataFromServer() {
 	}
 	fmt.Print("\x1d")
 	for _, deletion := range deletionsList {
-		fmt.Print("\x1f" + deletion.Name())
+		// print deletion if it is relevant to the current client device
+		affectedIDTargetLocationIncomplete := strings.Split(deletion.Name(), "\x1d")
+		if affectedIDTargetLocationIncomplete[0] == clientDeviceID {
+			fmt.Print("\x1f" + strings.ReplaceAll(affectedIDTargetLocationIncomplete[1], "\x1e", backend.PathSeparator))
+
+			// assume successful client deletion and remove deletions file (if assumption is somehow false, worst case scenario is that the client will re-upload the deleted entry)
+			os.Remove(backend.ConfigDir + backend.PathSeparator + "deletions" + backend.PathSeparator + deletion.Name())
+		}
 	}
 }