altos-map: Support version query from application

[fw/altos] / map-server / altos-map / AltosMap.java

diff --git a/map-server/altos-map/AltosMap.java b/map-server/altos-map/AltosMap.java
index d78396d0d9d59113d388db27d8d047916681b793..ad0a4f5f3aa439f4a9f530b0f7c96a88def9fe4e 100644 (file)
--- a/map-server/altos-map/AltosMap.java
+++ b/map-server/altos-map/AltosMap.java
@@ -25,6 +25,8 @@ public class AltosMap {
 
        public final static int port = 16717;
 
+       public final static String protocol_version = "1.0.0";
+
        String  query_string;
        String  remote_addr;
 
@@ -80,6 +82,7 @@ public class AltosMap {
                double  lon = AltosLib.MISSING;
                double  lat = AltosLib.MISSING;
                int     zoom = AltosLib.MISSING;
+               String  version = null;
 
                try {
                        for (String query : queries) {
@@ -93,6 +96,8 @@ public class AltosMap {
                                                lat = AltosParse.parse_double_net(value);
                                        else if (name.equals("zoom"))
                                                zoom = AltosParse.parse_int(value);
+                                       else if (name.equals("version"))
+                                               version = value;
                                        else
                                                fail(400, String.format("Extra query param \"%s\"", query));
                                }
@@ -101,62 +106,68 @@ public class AltosMap {
                        fail(400, String.format("Invalid query: %s", pe.toString()));
                }
 
-               if (lon == AltosLib.MISSING)
-                       fail(400, "Missing longitude");
-               if (lat == AltosLib.MISSING)
-                       fail(400, "Missing latitude");
-               if (zoom == AltosLib.MISSING)
-                       fail(400, "Missing zoom");
-
-               try {
-                       Socket  socket = null;
-                       int tries = 0;
+               if (version != null) {
+                       System.out.printf("Content-Type: text/plain\n");
+                       System.out.printf("\n");
+                       System.out.printf("%s\n", protocol_version);
+               } else {
+                       if (lon == AltosLib.MISSING)
+                               fail(400, "Missing longitude");
+                       if (lat == AltosLib.MISSING)
+                               fail(400, "Missing latitude");
+                       if (zoom == AltosLib.MISSING)
+                               fail(400, "Missing zoom");
 
-                       while (tries < 10 && socket == null) {
-                               try {
-                                       socket = new Socket(InetAddress.getLoopbackAddress(), port);
-                               } catch (IOException ie) {
-                                       Thread.sleep(100);
-                                       tries++;
+                       try {
+                               Socket  socket = null;
+                               int tries = 0;
+
+                               while (tries < 10 && socket == null) {
+                                       try {
+                                               socket = new Socket(InetAddress.getLoopbackAddress(), port);
+                                       } catch (IOException ie) {
+                                               Thread.sleep(100);
+                                               tries++;
+                                       }
                                }
-                       }
 
-                       AltosJson       request = new AltosJson();
+                               AltosJson       request = new AltosJson();
 
-                       request.put("lat", lat);
-                       request.put("lon", lon);
-                       request.put("zoom", zoom);
-                       request.put("remote_addr", remote_addr);
+                               request.put("lat", lat);
+                               request.put("lon", lon);
+                               request.put("zoom", zoom);
+                               request.put("remote_addr", remote_addr);
 
-                       Writer writer = new PrintWriter(socket.getOutputStream());
-                       request.write(writer);
-                       writer.flush();
+                               Writer writer = new PrintWriter(socket.getOutputStream());
+                               request.write(writer);
+                               writer.flush();
 
-                       AltosJson       reply = AltosJson.fromInputStream(socket.getInputStream());
+                               AltosJson       reply = AltosJson.fromInputStream(socket.getInputStream());
 
-                       int status = reply.get_int("status", 400);
+                               int status = reply.get_int("status", 400);
 
-                       if (status != 200)
-                               fail(status, "Bad cache status");
+                               if (status != 200)
+                                       fail(status, "Bad cache status");
 
-                       String filename = reply.get_string("filename", null);
-                       try {
-                               File file = new File(filename);
-                               long length = file.length();
-                               FileInputStream in = new FileInputStream(file);
-                               String content_type = reply.get_string("content_type", null);
-                               System.out.printf("Content-Type: %s\n", content_type);
-                               System.out.printf("Content-Length: %d\n", file.length());
-                               System.out.printf("\n");
-                               byte[] buf = new byte[4096];
-                               int bytes_read;
-                               while ((bytes_read = in.read(buf)) > 0)
-                                       System.out.write(buf);
-                       } catch (IOException ie) {
-                               fail(404, String.format("IO Exception: %s", ie.toString()));
+                               String filename = reply.get_string("filename", null);
+                               try {
+                                       File file = new File(filename);
+                                       long length = file.length();
+                                       FileInputStream in = new FileInputStream(file);
+                                       String content_type = reply.get_string("content_type", null);
+                                       System.out.printf("Content-Type: %s\n", content_type);
+                                       System.out.printf("Content-Length: %d\n", file.length());
+                                       System.out.printf("\n");
+                                       byte[] buf = new byte[4096];
+                                       int bytes_read;
+                                       while ((bytes_read = in.read(buf)) > 0)
+                                               System.out.write(buf);
+                               } catch (IOException ie) {
+                                       fail(404, String.format("IO Exception: %s", ie.toString()));
+                               }
+                       } catch (Exception e) {
+                               fail(404, String.format("Exception %s", e.toString()));
                        }
-               } catch (Exception e) {
-                       fail(404, String.format("Exception %s", e.toString()));
                }
        }