public static void Confirm(XmlElement xmlElement,
ReplicationConfig cfg, bool compulsory)
{
Configuration.ConfirmUint(xmlElement,
"AckTimeout", cfg.AckTimeout,
compulsory);
Configuration.ConfirmBool(xmlElement, "BulkTransfer",
cfg.BulkTransfer, compulsory);
Configuration.ConfirmUint(xmlElement, "CheckpointDelay",
cfg.CheckpointDelay, compulsory);
Configuration.ConfirmUint(xmlElement, "ConnectionRetry",
cfg.ConnectionRetry, compulsory);
Configuration.ConfirmBool(xmlElement, "DelayClientSync",
cfg.DelayClientSync, compulsory);
Configuration.ConfirmUint(xmlElement, "ElectionRetry",
cfg.ElectionRetry, compulsory);
Configuration.ConfirmUint(xmlElement, "ElectionTimeout",
cfg.ElectionTimeout, compulsory);
Configuration.ConfirmUint(xmlElement, "FullElectionTimeout",
cfg.FullElectionTimeout, compulsory);
Configuration.ConfirmUint(xmlElement, "HeartbeatMonitor",
cfg.HeartbeatMonitor, compulsory);
Configuration.ConfirmUint(xmlElement, "HeartbeatSend",
cfg.HeartbeatSend, compulsory);
Configuration.ConfirmUint(xmlElement, "LeaseTimeout",
cfg.LeaseTimeout, compulsory);
Configuration.ConfirmBool(xmlElement, "AutoInit",
cfg.AutoInit, compulsory);
Configuration.ConfirmBool(xmlElement, "NoBlocking",
cfg.NoBlocking, compulsory);
Configuration.ConfirmUint(xmlElement, "Priority",
cfg.Priority, compulsory);
Configuration.ConfirmAckPolicy(xmlElement,
"RepMgrAckPolicy", cfg.RepMgrAckPolicy, compulsory);
if (cfg.RepmgrSitesConfig.Count > 0)
{
Configuration.ConfirmReplicationHostAddress(
xmlElement, "RepMgrLocalSite",
cfg.RepmgrSitesConfig[0], compulsory);
}
Configuration.ConfirmBool(xmlElement, "Strict2Site",
cfg.Strict2Site, compulsory);
Configuration.ConfirmBool(xmlElement, "UseMasterLeases",
cfg.UseMasterLeases, compulsory);
}
/// <summary>
/// Parses a replication state from a state file stream.
/// </summary>
/// <param name="config">The replication config.</param>
/// <param name="streamReader">The stream reader.</param>
/// <returns>The replication state.</returns>
/// <exception cref="Exception"></exception>
internal static ReplicationState ParseReplicationState(this ReplicationConfig config, StreamReader streamReader)
{
var sequenceNumber = long.MaxValue;
var timestamp = default(DateTime);
while (!streamReader.EndOfStream)
{
var line = streamReader.ReadLine();
if (string.IsNullOrWhiteSpace(line))
{
continue;
}
if (line.StartsWith("#"))
{
continue;
}
if (line.StartsWith(ReplicationState.SequenceNumberKey))
{ // this line has the sequence number.
var keyValue = line.Split('=');
if (keyValue.Length != 2)
{
throw new Exception($"Could not parse {ReplicationState.SequenceNumberKey}");
}
if (!long.TryParse(keyValue[1], out sequenceNumber))
{
throw new Exception($"Could not parse {ReplicationState.SequenceNumberKey}");
}
}
else if (line.StartsWith(ReplicationState.TimestampKey))
{
var keyValue = line.Split('=');
if (keyValue.Length != 2)
{
throw new Exception($"Could not parse {ReplicationState.TimestampKey}");
}
keyValue[1] = keyValue[1].Replace("\\", string.Empty);
if (!DateTime.TryParse(keyValue[1], null, DateTimeStyles.AdjustToUniversal, out timestamp))
{
throw new Exception($"Could not parse {ReplicationState.TimestampKey}");
}
}
}
return(new ReplicationState(config, sequenceNumber, timestamp));
}
/// <summary>
/// Gets an enumerator to loop over incoming diffs.
/// </summary>
/// <param name="config">The replication config.</param>
/// <param name="sequenceNumber">The sequence number, latest if empty.</param>
/// <returns>The enumerator moved to the given sequence number or null if the sequence number doesn't exist.</returns>
public static async Task <ReplicationDiffEnumerator> GetDiffEnumerator(this ReplicationConfig config,
long?sequenceNumber = null)
{
if (sequenceNumber == null)
{ // get the latest number.
var latest = await config.LatestReplicationState();
sequenceNumber = latest.SequenceNumber;
}
var enumerator = new ReplicationDiffEnumerator(config);
if (!await enumerator.MoveTo(sequenceNumber.Value))
{
return(null);
}
return(enumerator);
}
public void TestRepMgrLocalSite()
{
string host = "127.0.0.0";
uint port = 8888;
testName = "TestRepMgrLocalSite";
SetUpTest(false);
ReplicationConfig repConfig1 = new ReplicationConfig();
repConfig1.RepMgrLocalSite = new ReplicationHostAddress();
repConfig1.RepMgrLocalSite.Host = host;
repConfig1.RepMgrLocalSite.Port = port;
Assert.AreEqual(host, repConfig1.RepMgrLocalSite.Host);
Assert.AreEqual(port, repConfig1.RepMgrLocalSite.Port);
ReplicationConfig repConfig2 = new ReplicationConfig();
repConfig2.RepMgrLocalSite =
new ReplicationHostAddress(host, port);
Assert.AreEqual(host, repConfig2.RepMgrLocalSite.Host);
Assert.AreEqual(port, repConfig2.RepMgrLocalSite.Port);
ReplicationConfig repConfig3 = new ReplicationConfig();
repConfig3.RepMgrLocalSite =
new ReplicationHostAddress(host + ":" + port);
Assert.AreEqual(host, repConfig3.RepMgrLocalSite.Host);
Assert.AreEqual(port, repConfig3.RepMgrLocalSite.Port);
try
{
repConfig3.RepMgrLocalSite =
new ReplicationHostAddress(host + port);
throw new TestException();
}
catch (ArgumentException) {
}
}
public void TestConfig()
{
testName = "TestConfig";
ReplicationConfig repConfig = new ReplicationConfig();
XmlElement xmlElem = Configuration.TestSetUp(
testFixtureName, testName);
Config(xmlElem, ref repConfig, true);
Confirm(xmlElem, repConfig, true);
repConfig.Clockskew(102, 100);
Assert.AreEqual(102, repConfig.ClockskewFast);
Assert.AreEqual(100, repConfig.ClockskewSlow);
repConfig.TransmitLimit(1, 1024);
Assert.AreEqual(1, repConfig.TransmitLimitGBytes);
Assert.AreEqual(1024, repConfig.TransmitLimitBytes);
repConfig.RetransmissionRequest(10, 100);
Assert.AreEqual(100, repConfig.RetransmissionRequestMax);
Assert.AreEqual(10, repConfig.RetransmissionRequestMin);
}
public static void Config(XmlElement xmlElement,
ref ReplicationConfig cfg, bool compulsory)
{
uint uintValue = new uint();
if (Configuration.ConfigUint(xmlElement, "AckTimeout",
ref uintValue, compulsory))
{
cfg.AckTimeout = uintValue;
}
Configuration.ConfigBool(xmlElement, "BulkTransfer",
ref cfg.BulkTransfer, compulsory);
if (Configuration.ConfigUint(xmlElement, "CheckpointDelay",
ref uintValue, compulsory))
{
cfg.CheckpointDelay = uintValue;
}
if (Configuration.ConfigUint(xmlElement, "ConnectionRetry",
ref uintValue, compulsory))
{
cfg.ConnectionRetry = uintValue;
}
Configuration.ConfigBool(xmlElement, "DelayClientSync",
ref cfg.DelayClientSync, compulsory);
if (Configuration.ConfigUint(xmlElement, "ElectionRetry",
ref uintValue, compulsory))
{
cfg.ElectionRetry = uintValue;
}
if (Configuration.ConfigUint(xmlElement, "ElectionTimeout",
ref uintValue, compulsory))
{
cfg.ElectionTimeout = uintValue;
}
if (Configuration.ConfigUint(xmlElement, "FullElectionTimeout",
ref uintValue, compulsory))
{
cfg.FullElectionTimeout = uintValue;
}
if (Configuration.ConfigUint(xmlElement, "HeartbeatMonitor",
ref uintValue, compulsory))
{
cfg.HeartbeatMonitor = uintValue;
}
if (Configuration.ConfigUint(xmlElement, "HeartbeatSend",
ref uintValue, compulsory))
{
cfg.HeartbeatSend = uintValue;
}
if (Configuration.ConfigUint(xmlElement, "LeaseTimeout",
ref uintValue, compulsory))
{
cfg.LeaseTimeout = uintValue;
}
Configuration.ConfigBool(xmlElement, "AutoInit",
ref cfg.AutoInit, compulsory);
Configuration.ConfigBool(xmlElement, "NoBlocking",
ref cfg.NoBlocking, compulsory);
if (Configuration.ConfigUint(xmlElement, "Priority",
ref uintValue, compulsory))
{
cfg.Priority = uintValue;
}
Configuration.ConfigAckPolicy(xmlElement,
"RepMgrAckPolicy", ref cfg.RepMgrAckPolicy,
compulsory);
DbSiteConfig siteConfig = new DbSiteConfig();
siteConfig.LocalSite = true;
Configuration.ConfigReplicationHostAddress(xmlElement,
"RepMgrLocalSite", ref siteConfig, compulsory);
cfg.RepmgrSitesConfig.Add(siteConfig);
Configuration.ConfigBool(xmlElement, "Strict2Site",
ref cfg.Strict2Site, compulsory);
Configuration.ConfigBool(xmlElement, "UseMasterLeases",
ref cfg.UseMasterLeases, compulsory);
}
internal ReplicationDiffEnumerator(ReplicationConfig config)
{
Config = config;
_lastReturned = -1;
}
/// <summary>
/// Downloads the diff associated with the given replication state.
/// </summary>
/// <param name="config">The replication config.</param>
/// <param name="sequenceNumber">The sequence number.</param>
/// <returns>The raw diff stream.</returns>
internal static async Task <Stream> DownloadDiffStream(this ReplicationConfig config, long sequenceNumber)
{
return(await HttpHandler.Default.TryGetStreamAsync(config.DiffUrl(sequenceNumber)));
}
/// <summary>
/// Creates a new replication state.
/// </summary>
/// <param name="config">The replication config.</param>
/// <param name="sequenceNumber">The sequence number.</param>
/// <param name="endTimestamp">The timestamp.</param>
internal ReplicationState(ReplicationConfig config, long sequenceNumber, DateTime endTimestamp)
{
this.Config = config;
this.SequenceNumber = sequenceNumber;
this.EndTimestamp = endTimestamp;
}
