Added service to retrieve the positions for a group of devices from a particular user

2 files changed, 29 insertions, 0 deletions

diff --git a/src/org/traccar/model/MiscFormatter.java b/src/org/traccar/model/MiscFormatter.java
index d1e1ae959..7a1e69082 100644
--- a/src/org/traccar/model/MiscFormatter.java
+++ b/src/org/traccar/model/MiscFormatter.java
@@ -15,6 +15,8 @@
  */
 package org.traccar.model;
 
+import org.traccar.web.JsonConverter;
+
 import java.text.DecimalFormat;
 import java.util.LinkedHashMap;
 import java.util.Map;
@@ -73,6 +75,10 @@ public class MiscFormatter {
                 json.add(entry.getKey(), (Double) entry.getValue());
             } else if (entry.getValue() instanceof Boolean) {
                 json.add(entry.getKey(), (Boolean) entry.getValue());
+            } else if (entry.getValue() == null) {
+                json.add(entry.getKey(), JsonValue.NULL);
+            } else {
+                json.add(entry.getKey(), JsonConverter.objectToJson(entry.getValue()));
             }
         }
 
diff --git a/src/org/traccar/web/PositionServlet.java b/src/org/traccar/web/PositionServlet.java
index a29b5b274..78bcb22e7 100644
--- a/src/org/traccar/web/PositionServlet.java
+++ b/src/org/traccar/web/PositionServlet.java
@@ -18,6 +18,11 @@ package org.traccar.web;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import org.traccar.Context;
+import org.traccar.model.MiscFormatter;
+import org.traccar.model.Position;
+
+import java.util.HashMap;
+import java.util.Map;
 
 public class PositionServlet extends BaseServlet {
 
@@ -28,6 +33,9 @@ public class PositionServlet extends BaseServlet {
             case "/get":
                 get(req, resp);
                 break;
+            case "/devices":
+                devices(req, resp);
+                break;
             default:
                 return false;
         }
@@ -44,4 +52,19 @@ public class PositionServlet extends BaseServlet {
                             JsonConverter.parseDate(req.getParameter("to")))));
     }
 
+    private void devices(HttpServletRequest req, HttpServletResponse resp) throws Exception {
+        long userId = getUserId(req);
+        Map<String, Object> positions = new HashMap<>();
+
+        for(String deviceIdString : req.getParameterValues("devicesId")) {
+            Long deviceId = Long.parseLong(deviceIdString);
+
+            Context.getPermissionsManager().checkDevice(userId, deviceId);
+
+            Position position = Context.getConnectionManager().getLastPosition(deviceId);
+            positions.put(deviceId.toString(), position);
+        }
+
+        sendResponse(resp.getWriter(), MiscFormatter.toJson(positions));
+    }
 }