Port date & time formatter rewrite to main

log4j-core-test/src/test/java/org/apache/logging/log4j/core/appender/FileAppenderTest.java

@@ -265,7 +265,7 @@ private static void writer(
     private void verifyFile(final int count) throws Exception {
         // String expected = "[\\w]* \\[\\s*\\] INFO TestLogger - Test$";
         final String expected =
-                "^\\d{4}-\\d{2}-\\d{2} \\d{2}:\\d{2}:\\d{2},\\d{3} \\[[^\\]]*\\] INFO TestLogger - Test";
+                "^\\d{4}-\\d{2}-\\d{2} \\d{2}:\\d{2}:\\d{2}.\\d{3} \\[[^\\]]*\\] INFO TestLogger - Test";
         final Pattern pattern = Pattern.compile(expected);
         int lines = 0;
         try (final BufferedReader is = new BufferedReader(new InputStreamReader(new FileInputStream(FILE_NAME)))) {

log4j-core-test/src/test/java/org/apache/logging/log4j/core/appender/rolling/OnStartupTriggeringPolicyTest.java

@@ -35,7 +35,8 @@
 import org.apache.logging.log4j.core.config.Configuration;
 import org.apache.logging.log4j.core.config.DefaultConfiguration;
 import org.apache.logging.log4j.core.layout.PatternLayout;
-import org.apache.logging.log4j.core.time.internal.format.FastDateFormat;
+import org.apache.logging.log4j.core.time.MutableInstant;
+import org.apache.logging.log4j.core.util.internal.instant.InstantPatternFormatter;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.io.TempDir;
 
@@ -46,7 +47,8 @@ public class OnStartupTriggeringPolicyTest {
 
     private static final String TARGET_PATTERN = "/test1-%d{MM-dd-yyyy}-%i.log";
     private static final String TEST_DATA = "Hello world!";
-    private static final FastDateFormat formatter = FastDateFormat.getInstance("MM-dd-yyyy");
+    private static final InstantPatternFormatter formatter =
+            InstantPatternFormatter.newBuilder().setPattern("MM-dd-yyyy").build();
 
     @TempDir
     Path tempDir;
@@ -56,7 +58,9 @@ public void testPolicy() throws Exception {
         final Configuration configuration = new DefaultConfiguration();
         final Path target = tempDir.resolve("testfile");
         final long timeStamp = Instant.now().minus(Duration.ofDays(1)).toEpochMilli();
-        final String expectedDate = formatter.format(timeStamp);
+        final MutableInstant instant = new MutableInstant();
+        instant.initFromEpochMilli(timeStamp, 0);
+        final String expectedDate = formatter.format(instant);
         final Path rolled = tempDir.resolve("test1-" + expectedDate + "-1.log");
         final long copied;
         try (final InputStream is = new ByteArrayInputStream(TEST_DATA.getBytes(StandardCharsets.UTF_8))) {

log4j-core-test/src/test/java/org/apache/logging/log4j/core/appender/rolling/RollingAppenderDeleteAccumulatedCount1Test.java

@@ -35,8 +35,6 @@
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.core.LoggerContext;
 import org.apache.logging.log4j.core.test.junit.LoggerContextSource;
-import org.apache.logging.log4j.core.time.internal.format.FixedDateFormat;
-import org.apache.logging.log4j.core.time.internal.format.FixedDateFormat.FixedFormat;
 import org.apache.logging.log4j.test.junit.CleanUpDirectories;
 import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
@@ -76,9 +74,7 @@ public void testAppender(final LoggerContext context) throws Exception {
         assertTrue(files.length > 0, "Dir " + DIR + " should contain files");
         for (final File file : files) {
             final BasicFileAttributes fileAttributes = Files.readAttributes(file.toPath(), BasicFileAttributes.class);
-            System.out.println(file + " (" + fileAttributes.size() + "B) "
-                    + FixedDateFormat.create(FixedFormat.ABSOLUTE)
-                            .format(fileAttributes.lastModifiedTime().toMillis()));
+            System.out.println(file + " (" + fileAttributes.size() + "B) " + fileAttributes.lastModifiedTime());
         }
         final List<String> expected = List.of("my-1.log", "my-2.log", "my-3.log", "my-4.log", "my-5.log");
         assertEquals(expected.size() + 6, files.length, Arrays.toString(files));

log4j-core-test/src/test/java/org/apache/logging/log4j/core/appender/rolling/RollingAppenderDeleteAccumulatedCount2Test.java

@@ -35,8 +35,6 @@
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.core.LoggerContext;
 import org.apache.logging.log4j.core.test.junit.LoggerContextSource;
-import org.apache.logging.log4j.core.time.internal.format.FixedDateFormat;
-import org.apache.logging.log4j.core.time.internal.format.FixedDateFormat.FixedFormat;
 import org.apache.logging.log4j.test.junit.CleanUpDirectories;
 import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
@@ -77,9 +75,7 @@ public void testAppender(final LoggerContext context) throws Exception {
         assertTrue(files.length > 0, "Dir " + DIR + " should contain files");
         for (final File file : files) {
             final BasicFileAttributes fileAttributes = Files.readAttributes(file.toPath(), BasicFileAttributes.class);
-            System.out.println(file + " (" + fileAttributes.size() + "B) "
-                    + FixedDateFormat.create(FixedFormat.ABSOLUTE)
-                            .format(fileAttributes.lastModifiedTime().toMillis()));
+            System.out.println(file + " (" + fileAttributes.size() + "B) " + fileAttributes.lastModifiedTime());
         }
         // sometimes "test-9.log", sometimes "test-10.log" remains
         final List<String> expected = List.of("my-1.log", "my-2.log", "my-3.log", "my-4.log", "my-5.log");

log4j-core-test/src/test/java/org/apache/logging/log4j/core/appender/rolling/RollingAppenderDeleteAccumulatedSizeTest.java

@@ -27,8 +27,6 @@
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.core.LoggerContext;
 import org.apache.logging.log4j.core.test.junit.LoggerContextSource;
-import org.apache.logging.log4j.core.time.internal.format.FixedDateFormat;
-import org.apache.logging.log4j.core.time.internal.format.FixedDateFormat.FixedFormat;
 import org.apache.logging.log4j.test.junit.CleanUpDirectories;
 import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
@@ -61,9 +59,7 @@ public void testAppender(final LoggerContext context) throws Exception {
         assertTrue(files.length > 0, "Dir " + DIR + " should contain files");
         for (final File file : files) {
             final BasicFileAttributes fileAttributes = Files.readAttributes(file.toPath(), BasicFileAttributes.class);
-            System.out.println(file + " (" + fileAttributes.size() + "B) "
-                    + FixedDateFormat.create(FixedFormat.ABSOLUTE)
-                            .format(fileAttributes.lastModifiedTime().toMillis()));
+            System.out.println(file + " (" + fileAttributes.size() + "B) " + fileAttributes.lastModifiedTime());
         }
         assertEquals(4, files.length, Arrays.toString(files));
         long total = 0;

log4j-core-test/src/test/java/org/apache/logging/log4j/core/appender/rolling/RollingAppenderDeleteNestedTest.java

@@ -35,8 +35,6 @@
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.core.LoggerContext;
 import org.apache.logging.log4j.core.test.junit.LoggerContextSource;
-import org.apache.logging.log4j.core.time.internal.format.FixedDateFormat;
-import org.apache.logging.log4j.core.time.internal.format.FixedDateFormat.FixedFormat;
 import org.apache.logging.log4j.test.junit.CleanUpDirectories;
 import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
@@ -76,9 +74,7 @@ public void testAppender(final LoggerContext context) throws Exception {
         assertTrue(files.length > 0, "Dir " + DIR + " should contain files");
         for (final File file : files) {
             final BasicFileAttributes fileAttributes = Files.readAttributes(file.toPath(), BasicFileAttributes.class);
-            System.out.println(file + " (" + fileAttributes.size() + "B) "
-                    + FixedDateFormat.create(FixedFormat.ABSOLUTE)
-                            .format(fileAttributes.lastModifiedTime().toMillis()));
+            System.out.println(file + " (" + fileAttributes.size() + "B) " + fileAttributes.lastModifiedTime());
         }
 
         final List<String> expected = Arrays.asList("my-1.log", "my-2.log", "my-3.log", "my-4.log", "my-5.log");

log4j-core-test/src/test/java/org/apache/logging/log4j/core/layout/HtmlLayoutTest.java

@@ -16,26 +16,19 @@
  */
 package org.apache.logging.log4j.core.layout;
 
-import static org.apache.logging.log4j.core.time.internal.format.FixedDateFormat.FixedFormat;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.lang.management.ManagementFactory;
 import java.nio.charset.StandardCharsets;
-import java.text.MessageFormat;
-import java.time.ZoneId;
-import java.time.ZonedDateTime;
-import java.time.format.DateTimeFormatter;
 import java.util.Calendar;
 import java.util.List;
-import java.util.Locale;
 import java.util.Map;
 import org.apache.logging.log4j.Level;
 import org.apache.logging.log4j.ThreadContext;
 import org.apache.logging.log4j.core.AbstractLogEvent;
 import org.apache.logging.log4j.core.Appender;
-import org.apache.logging.log4j.core.LogEvent;
 import org.apache.logging.log4j.core.Logger;
 import org.apache.logging.log4j.core.LoggerContext;
 import org.apache.logging.log4j.core.config.Configuration;
@@ -45,7 +38,6 @@
 import org.apache.logging.log4j.core.test.junit.ConfigurationFactoryType;
 import org.apache.logging.log4j.core.time.Instant;
 import org.apache.logging.log4j.core.time.MutableInstant;
-import org.apache.logging.log4j.core.time.internal.format.FixedDateFormat;
 import org.apache.logging.log4j.message.Message;
 import org.apache.logging.log4j.message.SimpleMessage;
 import org.apache.logging.log4j.test.junit.UsingAnyThreadContext;
@@ -243,68 +235,7 @@ public void testLayoutWithDatePatternUnixMillis() {
         assertEquals("<td>" + event.getTimeMillis() + "</td>", actual, "Incorrect date:" + actual);
     }
 
-    @Test
-    public void testLayoutWithDatePatternFixedFormat() {
-        for (final String timeZone : new String[] {"GMT+8", "GMT+0530", "UTC", null}) {
-            for (final FixedDateFormat.FixedFormat format : FixedDateFormat.FixedFormat.values()) {
-                testLayoutWithDatePatternFixedFormat(format, timeZone);
-            }
-        }
-    }
-
     private String getDateLine(final String logEventString) {
         return logEventString.split(System.lineSeparator())[2];
     }
-
-    private void testLayoutWithDatePatternFixedFormat(final FixedFormat format, final String timezone) {
-        final HtmlLayout layout = HtmlLayout.newBuilder()
-                .setConfiguration(new DefaultConfiguration())
-                .setDatePattern(format.name())
-                .setTimezone(timezone)
-                .build();
-
-        final LogEvent event = new MyLogEvent();
-        final String actual = getDateLine(layout.toSerializable(event));
-
-        // build expected date string
-        final java.time.Instant instant = java.time.Instant.ofEpochSecond(
-                event.getInstant().getEpochSecond(), event.getInstant().getNanoOfSecond());
-        ZonedDateTime zonedDateTime = ZonedDateTime.ofInstant(instant, ZoneId.systemDefault());
-        if (timezone != null) {
-            zonedDateTime = zonedDateTime.withZoneSameInstant(ZoneId.of(timezone));
-        }
-
-        // LOG4J2-3019 HtmlLayoutTest.testLayoutWithDatePatternFixedFormat test fails on windows
-        // https://issues.apache.org/jira/browse/LOG4J2-3019
-        // java.time.format.DateTimeFormatterBuilder.toFormatter() defaults to using
-        // Locale.getDefault(Locale.Category.FORMAT)
-        final Locale formatLocale = Locale.getDefault(Locale.Category.FORMAT);
-        final Locale locale = Locale.getDefault().equals(formatLocale) ? formatLocale : Locale.getDefault();
-
-        // For DateTimeFormatter of jdk,
-        // Pattern letter 'S' means fraction-of-second, 'n' means nano-of-second. Log4j2 needs S.
-        // Pattern letter 'X' (upper case) will output 'Z' when the offset to be output would be zero,
-        // whereas pattern letter 'x' (lower case) will output '+00', '+0000', or '+00:00'. Log4j2 needs x.
-        final DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern(
-                format.getPattern().replace('n', 'S').replace('X', 'x'), locale);
-        String expected = zonedDateTime.format(dateTimeFormatter);
-
-        final String offset = zonedDateTime.getOffset().toString();
-
-        // Truncate minutes if timeZone format is HH and timeZone has minutes. This is required because according to
-        // DateTimeFormatter,
-        // One letter outputs just the hour, such as '+01', unless the minute is non-zero in which case the minute is
-        // also output, such as '+0130'
-        // ref : https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html
-        if (FixedDateFormat.FixedTimeZoneFormat.HH.equals(format.getTimeZoneFormat())
-                && offset.contains(":")
-                && !"00".equals(offset.split(":")[1])) {
-            expected = expected.substring(0, expected.length() - 2);
-        }
-
-        assertEquals(
-                "<td>" + expected + "</td>",
-                actual,
-                MessageFormat.format("Incorrect date={0}, format={1}, timezone={2}", actual, format.name(), timezone));
-    }
 }