/// <summary>Construct a Bookkeeper journal manager.</summary>
/// <exception cref="System.IO.IOException"/>
public BookKeeperJournalManager(Configuration conf, URI uri, NamespaceInfo nsInfo
)
{
this.conf = conf;
this.nsInfo = nsInfo;
string zkConnect = uri.GetAuthority().Replace(";", ",");
basePath = uri.GetPath();
ensembleSize = conf.GetInt(BkjmBookkeeperEnsembleSize, BkjmBookkeeperEnsembleSizeDefault
);
quorumSize = conf.GetInt(BkjmBookkeeperQuorumSize, BkjmBookkeeperQuorumSizeDefault
);
ackQuorumSize = conf.GetInt(BkjmBookkeeperAckQuorumSize, quorumSize);
addEntryTimeout = conf.GetInt(BkjmBookkeeperAddEntryTimeoutSec, BkjmBookkeeperAddEntryTimeoutDefault
);
speculativeReadTimeout = conf.GetInt(BkjmBookkeeperSpeculativeReadTimeoutMs, BkjmBookkeeperSpeculativeReadTimeoutDefault
);
readEntryTimeout = conf.GetInt(BkjmBookkeeperReadEntryTimeoutSec, BkjmBookkeeperReadEntryTimeoutDefault
);
ledgerPath = basePath + "/ledgers";
string maxTxIdPath = basePath + "/maxtxid";
string currentInprogressNodePath = basePath + "/CurrentInprogress";
versionPath = basePath + "/version";
digestpw = conf.Get(BkjmBookkeeperDigestPw, BkjmBookkeeperDigestPwDefault);
try
{
zkConnectLatch = new CountDownLatch(1);
int bkjmZKSessionTimeout = conf.GetInt(BkjmZkSessionTimeout, BkjmZkSessionTimeoutDefault
);
zkc = new ZooKeeper(zkConnect, bkjmZKSessionTimeout, new BookKeeperJournalManager.ZkConnectionWatcher
(this));
// Configured zk session timeout + some extra grace period (here
// BKJM_ZK_SESSION_TIMEOUT_DEFAULT used as grace period)
int zkConnectionLatchTimeout = bkjmZKSessionTimeout + BkjmZkSessionTimeoutDefault;
if (!zkConnectLatch.Await(zkConnectionLatchTimeout, TimeUnit.Milliseconds))
{
throw new IOException("Error connecting to zookeeper");
}
PrepareBookKeeperEnv();
ClientConfiguration clientConf = new ClientConfiguration();
clientConf.SetSpeculativeReadTimeout(speculativeReadTimeout);
clientConf.SetReadEntryTimeout(readEntryTimeout);
clientConf.SetAddEntryTimeout(addEntryTimeout);
bkc = new BookKeeper(clientConf, zkc);
}
catch (KeeperException e)
{
throw new IOException("Error initializing zk", e);
}
catch (Exception ie)
{
Sharpen.Thread.CurrentThread().Interrupt();
throw new IOException("Interrupted while initializing bk journal manager", ie);
}
ci = new CurrentInprogress(zkc, currentInprogressNodePath);
maxTxId = new MaxTxId(zkc, maxTxIdPath);
}
/// <summary>
/// Tests that update should throw IOE, if version number modifies between read
/// and update
/// </summary>
/// <exception cref="System.Exception"/>
public virtual void TestUpdateShouldFailWithIOEIfVersionNumberChangedAfterRead()
{
CurrentInprogress ci = new CurrentInprogress(zkc, CurrentNodePath);
ci.Init();
ci.Update("myInprogressZnode");
NUnit.Framework.Assert.AreEqual("Not returning myInprogressZnode", "myInprogressZnode"
, ci.Read());
// Updating data in-between to change the data to change the version number
ci.Update("YourInprogressZnode");
ci.Update("myInprogressZnode");
}
public virtual void TestReadShouldReturnTheZnodePathAfterUpdate()
{
string data = "inprogressNode";
CurrentInprogress ci = new CurrentInprogress(zkc, CurrentNodePath);
ci.Init();
ci.Update(data);
string inprogressNodePath = ci.Read();
NUnit.Framework.Assert.AreEqual("Not returning inprogressZnode", "inprogressNode"
, inprogressNodePath);
}
public virtual void TestReadShouldReturnNullAfterClear()
{
CurrentInprogress ci = new CurrentInprogress(zkc, CurrentNodePath);
ci.Init();
ci.Update("myInprogressZnode");
ci.Read();
ci.Clear();
string inprogressNodePath = ci.Read();
NUnit.Framework.Assert.AreEqual("Expecting null to be return", null, inprogressNodePath
);
}
