Fix Log.d for larger than 4000 bytes (#443)

* Fix Log.d for larger than 4000 bytes

* trigger build

Author: hborisoff

AndroidSDKCore/src/main/java/com/leanplum/internal/Log.java

@@ -36,6 +36,8 @@ public class Log {
 
   private static int level = Level.INFO;
 
+  private static final int LOGGER_MAX_LEN = 4000; // bytes
+
   /**
    * Sets log level.
    * @param level level to set
@@ -149,7 +151,7 @@ public static void log(LogType type, String message, Object... args) {
           break;
         case DEBUG:
           if (level >= Level.DEBUG) {
-            android.util.Log.d(tag, msg);
+            largeLogD(tag, msg);
           }
           break;
       }
@@ -159,6 +161,15 @@ public static void log(LogType type, String message, Object... args) {
     }
   }
 
+  private static void largeLogD(String tag, String msg) {
+    if (msg.length() > LOGGER_MAX_LEN) {
+      android.util.Log.d(tag, msg.substring(0, LOGGER_MAX_LEN));
+      largeLogD(tag, msg.substring(LOGGER_MAX_LEN));
+    } else {
+      android.util.Log.d(tag, msg);
+    }
+  }
+
   private static String formatTag(LogType type) {
     return "[Leanplum][" + type.name() + "]";
   }