fix(agent): detection robuste du statut instances avec fallback ps -q (v0.2.1)

agent/instance.go

@@ -85,38 +85,45 @@ func getInstanceStatus(dataDir, instanceID string) string {
 	}
 
 	engine := getContainerEngine()
+
+	// Try modern JSON format first
 	cmd := exec.Command(engine, "compose", "-f", composeFile, "ps", "--format", "json")
 	out, err := cmd.Output()
+	if err == nil {
+		outStr := strings.TrimSpace(string(out))
+		if outStr == "" || outStr == "[]" {
+			return "stopped"
+		}
+		if strings.HasPrefix(outStr, "[") {
+			var containers []map[string]interface{}
+			if err := json.Unmarshal(out, &containers); err == nil {
+				for _, c := range containers {
+					state, _ := c["State"].(string)
+					if state == "running" {
+						return "running"
+					}
+				}
+				return "stopped"
+			}
+		} else {
+			var c map[string]interface{}
+			if err := json.Unmarshal(out, &c); err == nil {
+				state, _ := c["State"].(string)
+				if state == "running" {
+					return "running"
+				}
+				return "stopped"
+			}
+		}
+	}
+
+	// Fallback: use "ps -q" which is supported by all docker-compose versions
+	cmd = exec.Command(engine, "compose", "-f", composeFile, "ps", "-q")
+	out, err = cmd.Output()
 	if err != nil {
 		return "error"
 	}
-
-	outStr := strings.TrimSpace(string(out))
-	if outStr == "" || outStr == "[]" {
-		return "stopped"
-	}
-
-	// Docker compose JSON output can be a single object or an array
-	if strings.HasPrefix(outStr, "[") {
-		var containers []map[string]interface{}
-		if err := json.Unmarshal(out, &containers); err != nil {
-			return "error"
-		}
-		for _, c := range containers {
-			state, _ := c["State"].(string)
-			if state == "running" {
-				return "running"
-			}
-		}
-		return "stopped"
-	}
-
-	var c map[string]interface{}
-	if err := json.Unmarshal(out, &c); err != nil {
-		return "error"
-	}
-	state, _ := c["State"].(string)
-	if state == "running" {
+	if strings.TrimSpace(string(out)) != "" {
 		return "running"
 	}
 	return "stopped"