本文整理汇总了Java中org.apache.zookeeper.server.ZKDatabase.truncateLog方法的典型用法代码示例。如果您正苦于以下问题：Java ZKDatabase.truncateLog方法的具体用法？Java ZKDatabase.truncateLog怎么用？Java ZKDatabase.truncateLog使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.zookeeper.server.ZKDatabase的用法示例。
在下文中一共展示了ZKDatabase.truncateLog方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testTruncationStreamReset
import org.apache.zookeeper.server.ZKDatabase; //导入方法依赖的package包/类
@Test
public void testTruncationStreamReset() throws Exception {
File tmpdir = ClientBase.createTmpDir();
FileTxnSnapLog snaplog = new FileTxnSnapLog(tmpdir, tmpdir);
ZKDatabase zkdb = new ZKDatabase(snaplog);
for (int i = 1; i <= 100; i++) {
append(zkdb, i);
}
zkdb.truncateLog(1);
append(zkdb, 200);
zkdb.close();
// verify that the truncation and subsequent append were processed
// correctly
FileTxnLog txnlog = new FileTxnLog(new File(tmpdir, "version-2"));
TxnIterator iter = txnlog.read(1);
TxnHeader hdr = iter.getHeader();
Record txn = iter.getTxn();
Assert.assertEquals(1, hdr.getZxid());
Assert.assertTrue(txn instanceof SetDataTxn);
iter.next();
hdr = iter.getHeader();
txn = iter.getTxn();
Assert.assertEquals(200, hdr.getZxid());
Assert.assertTrue(txn instanceof SetDataTxn);
iter.close();
ClientBase.recursiveDelete(tmpdir);
}
示例2: testTruncationNullLog
import org.apache.zookeeper.server.ZKDatabase; //导入方法依赖的package包/类
@Test
public void testTruncationNullLog() throws Exception {
File tmpdir = ClientBase.createTmpDir();
FileTxnSnapLog snaplog = new FileTxnSnapLog(tmpdir, tmpdir);
ZKDatabase zkdb = new ZKDatabase(snaplog);
for (int i = 1; i <= 100; i++) {
append(zkdb, i);
}
zkdb.close();
File[] logs = snaplog.getDataDir().listFiles();
for(int i = 0; i < logs.length; i++) {
LOG.debug("Deleting: {}", logs[i].getName());
Assert.assertTrue("Failed to delete log file: " + logs[i].getName(), logs[i].delete());
}
try {
zkdb.truncateLog(1);
Assert.assertTrue("Should not get here", false);
}
catch(IOException e) {
Assert.assertTrue("Should have received an IOException", true);
}
catch(NullPointerException npe) {
Assert.fail("This should not throw NPE!");
}
ClientBase.recursiveDelete(tmpdir);
}
示例3: testTruncationStreamReset
import org.apache.zookeeper.server.ZKDatabase; //导入方法依赖的package包/类
@Test
public void testTruncationStreamReset() throws Exception {
File tmpdir = ClientBase.createTmpDir();
FileTxnSnapLog snaplog = new FileTxnSnapLog(tmpdir, tmpdir);
ZKDatabase zkdb = new ZKDatabase(snaplog);
// make sure to snapshot, so that we have something there when
// truncateLog reloads the db
snaplog.save(zkdb.getDataTree(), zkdb.getSessionWithTimeOuts(), false);
for (int i = 1; i <= 100; i++) {
append(zkdb, i);
}
zkdb.truncateLog(1);
append(zkdb, 200);
zkdb.close();
// verify that the truncation and subsequent append were processed
// correctly
FileTxnLog txnlog = new FileTxnLog(new File(tmpdir, "version-2"));
TxnIterator iter = txnlog.read(1);
TxnHeader hdr = iter.getHeader();
Record txn = iter.getTxn();
Assert.assertEquals(1, hdr.getZxid());
Assert.assertTrue(txn instanceof SetDataTxn);
iter.next();
hdr = iter.getHeader();
txn = iter.getTxn();
Assert.assertEquals(200, hdr.getZxid());
Assert.assertTrue(txn instanceof SetDataTxn);
iter.close();
ClientBase.recursiveDelete(tmpdir);
}
示例4: testTruncationStreamReset
import org.apache.zookeeper.server.ZKDatabase; //导入方法依赖的package包/类
@Test
public void testTruncationStreamReset() throws Exception {
File tmpdir = ClientBase.createTmpDir();
FileTxnSnapLog snaplog = new FileTxnSnapLog(tmpdir, tmpdir);
ZKDatabase zkdb = new ZKDatabase(snaplog);
for (int i = 1; i <= 100; i++) {
append(zkdb, i);
}
zkdb.truncateLog(1);
append(zkdb, 200);
zkdb.close();
// verify that the truncation and subsequent append were processed
// correctly
FileTxnLog txnlog = new FileTxnLog(new File(tmpdir, "version-2"));
TxnIterator iter = txnlog.read(1);
TxnHeader hdr = iter.getHeader();
Record txn = iter.getTxn();
Assert.assertEquals(1, hdr.getZxid());
Assert.assertTrue(txn instanceof SetDataTxn);
iter.next();
hdr = iter.getHeader();
txn = iter.getTxn();
Assert.assertEquals(200, hdr.getZxid());
Assert.assertTrue(txn instanceof SetDataTxn);
}