Shortened prefix and capped concatenated string

Author: argzdev

transport/transport-runtime/src/main/java/com/google/android/datatransport/runtime/logging/Logging.java

@@ -18,22 +18,23 @@
 import android.util.Log;
 
 public final class Logging {
-  private static final String prefix = "TRuntime.";
+  private static final String LOG_PREFIX = "TRuntime.";
+  private static final int MAX_LOG_TAG_SIZE_IN_SDK_N = 23;
+
   private Logging() {}
 
   private static String getTag(String tag) {
     if(android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.N)
-      return concatTag(prefix, tag);
+      return concatTag(LOG_PREFIX, tag);
 
-    return prefix + tag;
+    return MAX_LOG_TAG_SIZE_IN_SDK_N + tag;
   }
 
   private static String concatTag(String prefix, String tag){
     String concatText = prefix + tag;
-    int loggableLimit = 23;
 
-    if(concatText.length() > loggableLimit)
-      concatText = concatText.substring(0, loggableLimit);
+    if(concatText.length() > MAX_LOG_TAG_SIZE_IN_SDK_N)
+      concatText = concatText.substring(0, MAX_LOG_TAG_SIZE_IN_SDK_N);
 
     return concatText;
   }