AMQ-9547 - Remove setLength() and usage from RecoverableRandomAccessFile

This method always throws an exception so it should be removed and no
longer used. Places in PageFile that called the method have been updated
to either remove the usage or throw an error.

activemq-kahadb-store/src/main/java/org/apache/activemq/store/kahadb/disk/page/PageFile.java

@@ -423,7 +423,8 @@ public class PageFile {
             }
 
             if (writeFile.length() < PAGE_FILE_HEADER_SIZE) {
-                writeFile.setLength(PAGE_FILE_HEADER_SIZE);
+                throw new IllegalStateException("File " + file + " is corrupt, length of "
+                    + writeFile.length() + " is less than page file header size of " + PAGE_FILE_HEADER_SIZE);
             }
             nextFreePageId.set((writeFile.length() - PAGE_FILE_HEADER_SIZE) / pageSize);
 
@@ -1165,12 +1166,6 @@ public class PageFile {
                     recoveryFile.write(w.getDiskBound(tmpFilesForRemoval), 0, pageSize);
                 }
 
-                // Can we shrink the recovery buffer??
-                if (recoveryPageCount > recoveryFileMaxPageCount) {
-                    int t = Math.max(recoveryFileMinPageCount, batch.size());
-                    recoveryFile.setLength(recoveryFileSizeForPages(t));
-                }
-
                 // Record the page writes in the recovery buffer.
                 recoveryFile.seek(0);
                 // Store the next tx id...
@@ -1262,8 +1257,6 @@ public class PageFile {
         if (recoveryFile.length() == 0) {
             // Write an empty header..
             recoveryFile.write(new byte[RECOVERY_FILE_HEADER_SIZE]);
-            // Preallocate the minium size for better performance.
-            recoveryFile.setLength(recoveryFileSizeForPages(recoveryFileMinPageCount));
             return 0;
         }
 

activemq-kahadb-store/src/main/java/org/apache/activemq/util/RecoverableRandomAccessFile.java

@@ -374,10 +374,6 @@ public class RecoverableRandomAccessFile implements java.io.DataOutput, java.io.
         }
     }
 
-    public void setLength(long length) throws IOException {
-        throw new IllegalStateException("File size is pre allocated");
-    }
-
     public void seek(long pos) throws IOException {
         try {
             getRaf().seek(pos);

activemq-kahadb-store/src/test/java/org/apache/activemq/store/kahadb/disk/page/PageFileTest.java

@@ -367,20 +367,7 @@ public class PageFileTest extends TestCase {
     public void testRecoveryAfterUncleanShutdownAndZeroFreePages() throws Exception {
         final int numberOfPages = 1000;
         final AtomicBoolean recoveryEnd = new AtomicBoolean();
-
+        createRecoveryAppender("testRecoveryAfterUncleanShutdownAndZeroFreePagesAppender", recoveryEnd);
-        final var logger = org.apache.logging.log4j.core.Logger.class.cast(LogManager.getLogger(PageFile.class));
-        final var appender = new AbstractAppender("testAppender", new AbstractFilter() {}, new MessageLayout(), false, new Property[0]) {
-            @Override
-            public void append(LogEvent event) {
-                if (event.toImmutable().getLevel().equals(Level.INFO) && event.toImmutable().getMessage().getFormattedMessage().contains("Recovered pageFile free list")) {
-                    recoveryEnd.set(true);
-                }
-            }
-        };
-        appender.start();
-
-        logger.addAppender(appender);
-        logger.get().addAppender(appender, Level.DEBUG, new AbstractFilter() {});
 
         PageFile pf = new PageFile(new File("target/test-data"), getName());
         pf.delete();
@@ -414,22 +401,50 @@ public class PageFileTest extends TestCase {
 
     }
 
+    public void testRecoveryAfterUncleanShutdownAndMissingRecoveryFile() throws Exception {
+        final int numberOfPages = 1000;
+        final AtomicBoolean recoveryEnd = new AtomicBoolean();
+        createRecoveryAppender("testRecoveryAfterUncleanShutdownAndMissingRecoveryFileAppender", recoveryEnd);
+
+        PageFile pf = new PageFile(new File("target/test-data"), getName());
+        pf.delete();
+        pf.setEnableRecoveryFile(false);
+        pf.load();
+
+        LOG.info("Creating Transactions");
+        for (int i = 0; i < numberOfPages; i++) {
+            Transaction tx = pf.tx();
+            Page page = tx.allocate();
+            String t = "page:" + i;
+            page.set(t);
+            tx.store(page, StringMarshaller.INSTANCE, false);
+            tx.commit();
+        }
+
+        pf.flush();
+
+        assertEquals(pf.getFreePageCount(), 0);
+
+        //Simulate an unclean shutdown
+        PageFile pf2 = new PageFile(new File("target/test-data"), getName());
+        pf2.setEnableRecoveryFile(true);
+
+        // Simulate a missing recovery file
+        pf2.getRecoveryFile().delete();
+        pf2.load();
+
+        assertTrue("Recovery Finished", Wait.waitFor(recoveryEnd::get, 100000));
+
+        //Simulate a clean shutdown
+        pf2.unload();
+        assertTrue(pf2.isCleanShutdown());
+
+    }
+
     public void testBackgroundWillMarkUsedPagesAsFreeInTheBeginning() throws Exception {
         final int numberOfPages = 100000;
         final AtomicBoolean recoveryEnd = new AtomicBoolean();
-
+        createRecoveryAppender("testBackgroundWillMarkUsedPagesAsFreeInTheBeginningAppender", recoveryEnd);
-        final var logger = org.apache.logging.log4j.core.Logger.class.cast(LogManager.getLogger(PageFile.class));
-        final var appender = new AbstractAppender("pageAppender", new AbstractFilter() {}, new MessageLayout(), false, new Property[0]) {
-            @Override
-            public void append(LogEvent event) {
-                if (event.toImmutable().getLevel().equals(Level.INFO) && event.toImmutable().getMessage().getFormattedMessage().contains("Recovered pageFile free list")) {
-                    recoveryEnd.set(true);
-                }
-            }
-        };
-        appender.start();
-        logger.addAppender(appender);
-        logger.get().addAppender(appender, Level.DEBUG, new AbstractFilter() {});
 
         PageFile pf = new PageFile(new File("target/test-data"), getName());
         pf.delete();
@@ -519,4 +534,20 @@ public class PageFileTest extends TestCase {
 
         assertEquals("pages freed during recovery should be reused", numberOfPages, totalPages);
     }
+
+    private void createRecoveryAppender(String name, AtomicBoolean recoveryEnd) {
+        final var logger = org.apache.logging.log4j.core.Logger.class.cast(LogManager.getLogger(PageFile.class));
+        final var appender = new AbstractAppender(name, new AbstractFilter() {}, new MessageLayout(), false, new Property[0]) {
+            @Override
+            public void append(LogEvent event) {
+                if (event.toImmutable().getLevel().equals(Level.INFO) && event.toImmutable().getMessage().getFormattedMessage().contains("Recovered pageFile free list")) {
+                    recoveryEnd.set(true);
+                }
+            }
+        };
+        appender.start();
+
+        logger.addAppender(appender);
+        logger.get().addAppender(appender, Level.DEBUG, new AbstractFilter() {});
+    }
 }