Update AGPL logging with new license mechanism

DEVSIX-5341

Author: Egor Martsynkovsky

kernel/src/test/java/com/itextpdf/kernel/counter/StandardOutputEventCounterTest.java renamed to commons/src/main/java/com/itextpdf/commons/actions/processors/AbstractITextProductEventProcessor.java

@@ -20,22 +20,35 @@ This file is part of the iText (R) project.
     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.itextpdf.kernel.counter;
+package com.itextpdf.commons.actions.processors;
 
-import com.itextpdf.test.ExtendedITextTest;
-import com.itextpdf.test.annotations.type.UnitTest;
+import com.itextpdf.commons.actions.AbstractProductProcessITextEvent;
+import com.itextpdf.commons.exceptions.CommonsExceptionMessageConstant;
 
-import org.junit.Assert;
-import org.junit.Test;
-import org.junit.experimental.categories.Category;
+public abstract class AbstractITextProductEventProcessor implements ITextProductEventProcessor {
 
-@Category(UnitTest.class)
-public class StandardOutputEventCounterTest extends ExtendedITextTest {
+    private final String productName;
 
-    @Test
-    public void standardEventCounterFactoryTest() {
-        StandardOutputEventCounterFactory counterFactory = new StandardOutputEventCounterFactory();
+    public AbstractITextProductEventProcessor(String productName) {
+        if (productName == null) {
+            throw new IllegalArgumentException(CommonsExceptionMessageConstant.PRODUCT_NAME_CAN_NOT_BE_NULL);
+        }
+        this.productName = productName;
+    }
+
+    @Override
+    public abstract void onEvent(AbstractProductProcessITextEvent event);
+
+    @Override
+    public abstract String getUsageType();
+
+    @Override
+    public String getProducer() {
+        return "iText\u00ae ${usedProducts:P V (T 'version')} \u00a9${copyrightSince}-${copyrightTo} iText Group NV";
+    }
 
-        Assert.assertTrue(counterFactory.getCounter(getClass()) instanceof StandardOutputEventCounter);
+    @Override
+    public String getProductName() {
+        return productName;
     }
 }

commons/src/main/java/com/itextpdf/commons/actions/processors/DefaultITextProductEventProcessor.java

@@ -23,44 +23,85 @@ This file is part of the iText (R) project.
 package com.itextpdf.commons.actions.processors;
 
 import com.itextpdf.commons.actions.AbstractProductProcessITextEvent;
-import com.itextpdf.commons.exceptions.CommonsExceptionMessageConstant;
+import com.itextpdf.commons.actions.confirmations.ConfirmEvent;
+import com.itextpdf.commons.utils.Base64;
+
+import java.nio.charset.StandardCharsets;
+import java.util.concurrent.atomic.AtomicLong;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Defines a default strategy of product event processing.
  */
-public class DefaultITextProductEventProcessor implements ITextProductEventProcessor {
+public class DefaultITextProductEventProcessor extends AbstractITextProductEventProcessor {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(DefaultITextProductEventProcessor.class);
+
+    private static final byte[] messageForLogging = Base64
+            .decode("WW91IGFyZSB1c2luZyBpVGV4dCB1bmRlciB0aGUgQUdQTC4KCklmIHRoaXMgaXMgeW9"
+                    + "1ciBpbnRlbnRpb24sIHlvdSBoYXZlIHB1Ymxpc2hlZCB5b3VyIG93biBzb3VyY2UgY2"
+                    + "9kZSBhcyBBR1BMIHNvZnR3YXJlIHRvby4KUGxlYXNlIGxldCB1cyBrbm93IHdoZXJlI"
+                    + "HRvIGZpbmQgeW91ciBzb3VyY2UgY29kZSBieSBzZW5kaW5nIGEgbWFpbCB0byBhZ3Bs"
+                    + "QGl0ZXh0cGRmLmNvbQpXZSdkIGJlIGhvbm9yZWQgdG8gYWRkIGl0IHRvIG91ciBsaXN"
+                    + "0IG9mIEFHUEwgcHJvamVjdHMgYnVpbHQgb24gdG9wIG9mIGlUZXh0IDcKYW5kIHdlJ2"
+                    + "xsIGV4cGxhaW4gaG93IHRvIHJlbW92ZSB0aGlzIG1lc3NhZ2UgZnJvbSB5b3VyIGVyc"
+                    + "m9yIGxvZ3MuCgpJZiB0aGlzIHdhc24ndCB5b3VyIGludGVudGlvbiwgeW91IGFyZSBw"
+                    + "cm9iYWJseSB1c2luZyBpVGV4dCBpbiBhIG5vbi1mcmVlIGVudmlyb25tZW50LgpJbiB"
+                    + "0aGlzIGNhc2UsIHBsZWFzZSBjb250YWN0IHVzIGJ5IGZpbGxpbmcgb3V0IHRoaXMgZm"
+                    + "9ybTogaHR0cDovL2l0ZXh0cGRmLmNvbS9zYWxlcwpJZiB5b3UgYXJlIGEgY3VzdG9tZ"
+                    + "XIsIHdlJ2xsIGV4cGxhaW4gaG93IHRvIGluc3RhbGwgeW91ciBsaWNlbnNlIGtleSB0"
+                    + "byBhdm9pZCB0aGlzIG1lc3NhZ2UuCklmIHlvdSdyZSBub3QgYSBjdXN0b21lciwgd2U"
+                    + "nbGwgZXhwbGFpbiB0aGUgYmVuZWZpdHMgb2YgYmVjb21pbmcgYSBjdXN0b21lci4=");
+
+    private static final long[] REPEAT = {10000L, 5000L, 1000L};
+
+    private static final int MAX_LVL = REPEAT.length - 1;
 
-    private final String productName;
+    private final Object lock = new Object();
+
+    private final AtomicLong counter = new AtomicLong(0);
+
+    private final AtomicLong level = new AtomicLong(0);
+
+    private final AtomicLong repeatLevel;
 
     /**
      * Creates an instance of product event processor.
      *
      * @param productName is a product name
      */
     public DefaultITextProductEventProcessor(String productName) {
-        if (productName == null) {
-            throw new IllegalArgumentException(CommonsExceptionMessageConstant.PRODUCT_NAME_CAN_NOT_BE_NULL);
-        }
-        this.productName = productName;
+        super(productName);
+        repeatLevel = new AtomicLong(REPEAT[(int) level.get()]);
     }
 
     @Override
     public void onEvent(AbstractProductProcessITextEvent event) {
-        // TODO: DEVSIX-5341 provide appropriate logic if any
-    }
+        if (!(event instanceof ConfirmEvent)) {
+            return;
+        }
+        boolean isNeededToLogMessage = false;
+        synchronized (lock) {
+            if (counter.incrementAndGet() > repeatLevel.get()) {
+                counter.set(0);
+                if (level.incrementAndGet() > MAX_LVL) {
+                    level.set(MAX_LVL);
+                }
+                repeatLevel.set(REPEAT[(int) level.get()]);
+                isNeededToLogMessage = true;
+            }
+        }
 
-    @Override
-    public String getProductName() {
-        return productName;
+        if (isNeededToLogMessage) {
+            String message = new String(messageForLogging, StandardCharsets.ISO_8859_1);
+            LOGGER.info(message);
+            System.out.println(message);
+        }
     }
 
     @Override
     public String getUsageType() {
         return "AGPL";
     }
-
-    @Override
-    public String getProducer() {
-        return "iText\u00ae ${usedProducts:P V (T 'version')} \u00a9${copyrightSince}-${copyrightTo} iText Group NV";
-    }
 }