add log watcher to client

utils/src/main/java/ru/trader/edlog/EDLogReader.java

@@ -0,0 +1,50 @@
+package ru.trader.edlog;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class EDLogReader extends LogReader {
+    private final static Logger LOG = LoggerFactory.getLogger(EDLogReader.class);
+    private final static String LOG_FILE_PATTERN = ".+NetLog\\.log$";
+    private final static Pattern SYSTEM_CHANGE_REGEXP = Pattern.compile("System (.+) pos (-?[\\d\\.]+),(-?[\\d\\.]+),(-?[\\d\\.]+)");
+    private final static Pattern UNDOCK_REGEXP = Pattern.compile("undocked");
+
+    public EDLogReader() {
+        super(LOG_FILE_PATTERN);
+    }
+
+    @Override
+    protected void outLine(String line) {
+        super.outLine(line);
+        Matcher matcher = SYSTEM_CHANGE_REGEXP.matcher(line);
+        if (matcher.find()){
+            parseSystem(matcher);
+            return;
+        }
+        matcher = UNDOCK_REGEXP.matcher(line);
+        if (matcher.find()){
+            undock();
+        }
+    }
+
+    private void parseSystem(Matcher matcher) {
+        String name = matcher.group(1);
+        double x = Double.valueOf(matcher.group(2));
+        double y = Double.valueOf(matcher.group(3));
+        double z = Double.valueOf(matcher.group(4));
+        changeSystem(name, x, y, z);
+    }
+
+    protected void changeSystem(String name, double x, double y, double z) {
+        LOG.debug("System change to {}, coordinates: {},{},{}", name, x, y, z);
+    }
+
+    protected void undock() {
+        LOG.debug("Undocked");
+    }
+
+
+}