Initial checkin

qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/utils/LogUtils.java

@@ -0,0 +1,170 @@
+/*
+ * QQQ - Low-code Application Framework for Engineers.
+ * Copyright (C) 2021-2022.  Kingsrook, LLC
+ * 651 N Broad St Ste 205 # 6917 | Middletown DE 19709 | United States
+ * contact@kingsrook.com
+ * https://github.com/Kingsrook/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.kingsrook.qqq.backend.core.utils;
+
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Objects;
+import java.util.stream.Collectors;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+public class LogUtils
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public static String jsonLog(LogPair... logPairs)
+   {
+      if(logPairs == null || logPairs.length == 0)
+      {
+         return ("{}");
+      }
+
+      List<LogPair> filteredList = Arrays.stream(logPairs).filter(Objects::nonNull).toList();
+      if(filteredList.isEmpty())
+      {
+         return ("{}");
+      }
+
+      return ('{' + filteredList.stream().map(LogPair::toString).collect(Collectors.joining(",")) + '}');
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public static LogPair logPair(String key, Object value)
+   {
+      return (new LogPair(key, value));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public static LogPair logPair(String key, LogPair... values)
+   {
+      return (new LogPair(key, values));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public static class LogPair
+   {
+      private String key;
+      private Object value;
+
+
+
+      /*******************************************************************************
+       ** Constructor
+       **
+       *******************************************************************************/
+      public LogPair(String key, Object value)
+      {
+         this.key = key;
+         this.value = value;
+      }
+
+
+
+      /*******************************************************************************
+       **
+       *******************************************************************************/
+      @Override
+      public String toString()
+      {
+         String valueString = getValueString(value);
+
+         return "\"" + Objects.requireNonNullElse(key, "null").replace('"', '.') + "\":" + valueString;
+      }
+
+
+
+      /*******************************************************************************
+       **
+       *******************************************************************************/
+      private String getValueString(Object value)
+      {
+         String valueString;
+         if(value == null)
+         {
+            valueString = "null";
+         }
+         else if(value instanceof LogPair subLogPair)
+         {
+            valueString = '{' + subLogPair.toString() + '}';
+         }
+         else if(value instanceof LogPair[] subLogPairs)
+         {
+            String subLogPairsString = Arrays.stream(subLogPairs).map(LogPair::toString).collect(Collectors.joining(","));
+            valueString = '{' + subLogPairsString + '}';
+         }
+         else if(value instanceof UnsafeSupplier us)
+         {
+            try
+            {
+               Object o = us.get();
+               return getValueString(o);
+            }
+            catch(Exception e)
+            {
+               valueString = "LogValueError";
+            }
+         }
+         else if(value instanceof Number n)
+         {
+            valueString = String.valueOf(n);
+         }
+         else
+         {
+            valueString = '"' + String.valueOf(value).replace("\"", "\\\"") + '"';
+         }
+         return valueString;
+      }
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @FunctionalInterface
+   public interface UnsafeSupplier
+   {
+      /*******************************************************************************
+       **
+       *******************************************************************************/
+      Object get() throws Exception;
+   }
+
+}