public static void Main(string[] args)
{
RepConfig config = new RepConfig();
bool isPeer, isCreator;
uint tmpPort = 0;
/*
* RepQuoteExample is meant to be run from build_windows\AnyCPU, in
* either the Debug or Release directory. The required core
* libraries, however, are in either build_windows\Win32 or
* build_windows\x64, depending upon the platform. That location
* needs to be added to the PATH environment variable for the
* P/Invoke calls to work.
*/
try {
String pwd = Environment.CurrentDirectory;
pwd = Path.Combine(pwd, "..");
pwd = Path.Combine(pwd, "..");
if (IntPtr.Size == 4)
pwd = Path.Combine(pwd, "Win32");
else
pwd = Path.Combine(pwd, "x64");
#if DEBUG
pwd = Path.Combine(pwd, "Debug");
#else
pwd = Path.Combine(pwd, "Release");
#endif
pwd += ";" + Environment.GetEnvironmentVariable("PATH");
Environment.SetEnvironmentVariable("PATH", pwd);
} catch (Exception e) {
Console.WriteLine(
"Unable to set the PATH environment variable.");
Console.WriteLine(e.Message);
return;
}
/* Extract the command line parameters. */
for (int i = 0; i < args.Length; i++)
{
isPeer = false;
isCreator = false;
string s = args[i];
if (s[0] != '-')
continue;
switch (s[1])
{
case 'a':
if (i == args.Length - 1)
usage();
i++;
if (args[i].Equals("all"))
config.ackPolicy = AckPolicy.ALL;
else if (!args[i].Equals("quorum"))
usage();
break;
case 'b':
config.bulk = true;
break;
case 'C':
config.startPolicy = StartPolicy.CLIENT;
break;
case 'h':
if (i == args.Length - 1)
usage();
i++;
config.home = args[i];
break;
case 'l':
case 'L':
if (i == args.Length - 1)
usage();
if (args[i].Equals("-L"))
isCreator = true;
i++;
string[] words = args[i].Split(':');
if (words.Length != 2)
{
Console.Error.WriteLine("Invalid host " +
"specification host:port needed.");
usage();
}
try
{
tmpPort = uint.Parse(words[1]);
} catch (InvalidCastException)
{
Console.Error.WriteLine("Invalid host " +
"specification, could not parse port number.");
usage();
}
config.localSite.Host = words[0];
config.localSite.Port = tmpPort;
config.localSite.GroupCreator = isCreator;
config.localSite.LocalSite = true;
break;
case 'M':
config.startPolicy = StartPolicy.MASTER;
break;
case 'p':
if (i == args.Length - 1)
usage();
i++;
try
{
config.priority = uint.Parse(args[i]);
} catch (InvalidCastException)
{
Console.Error.WriteLine("Unable to parse priority.");
usage();
}
break;
case 'r':
case 'R':
if (i == args.Length - 1)
usage();
if (args[i].Equals("-R"))
isPeer = true;
i++;
words = args[i].Split(':');
if (words.Length != 2)
{
Console.Error.WriteLine("Invalid host " +
"specification host:port needed.");
usage();
}
try
{
tmpPort = uint.Parse(words[1]);
} catch (InvalidCastException)
{
Console.Error.WriteLine("Invalid host " +
"specification, could not parse port number.");
usage();
}
DbSiteConfig remoteConfig = new DbSiteConfig();
remoteConfig.Helper = true;
remoteConfig.Host = words[0];
remoteConfig.Port = tmpPort;
remoteConfig.Peer = isPeer;
config.remoteSites.Add(remoteConfig);
break;
case 'v':
config.verbose = true;
break;
default:
Console.Error.WriteLine(
"Unrecognized option: " + args[i]);
usage();
break;
}
}
/* Error check command line. */
if (config.localSite.Host == null || config.home.Length == 0)
usage();
RepQuoteExample runner = null;
try
{
runner = new RepQuoteExample();
runner.init(config);
runner.doloop();
runner.terminate();
runner = null;
} catch (DatabaseException dbErr)
{
Console.Error.WriteLine("Caught an exception during " +
"initialization or processing: " + dbErr);
if (runner != null)
runner.terminate();
}
}
public static void Main(string[] args)
{
RepConfig config = new RepConfig();
bool isPeer, isCreator;
uint tmpPort = 0;
/*
* RepQuoteExample is meant to be run from build_windows\AnyCPU, in
* either the Debug or Release directory. The required core
* libraries, however, are in either build_windows\Win32 or
* build_windows\x64, depending upon the platform. That location
* needs to be added to the PATH environment variable for the
* P/Invoke calls to work.
*/
try {
String pwd = Environment.CurrentDirectory;
pwd = Path.Combine(pwd, "..");
pwd = Path.Combine(pwd, "..");
if (IntPtr.Size == 4)
{
pwd = Path.Combine(pwd, "Win32");
}
else
{
pwd = Path.Combine(pwd, "x64");
}
#if DEBUG
pwd = Path.Combine(pwd, "Debug");
#else
pwd = Path.Combine(pwd, "Release");
#endif
pwd += ";" + Environment.GetEnvironmentVariable("PATH");
Environment.SetEnvironmentVariable("PATH", pwd);
} catch (Exception e) {
Console.WriteLine(
"Unable to set the PATH environment variable.");
Console.WriteLine(e.Message);
return;
}
/* Extract the command line parameters. */
for (int i = 0; i < args.Length; i++)
{
isPeer = false;
isCreator = false;
string s = args[i];
if (s[0] != '-')
{
continue;
}
switch (s[1])
{
case 'a':
if (i == args.Length - 1)
{
usage();
}
i++;
if (args[i].Equals("all"))
{
config.ackPolicy = AckPolicy.ALL;
}
else if (!args[i].Equals("quorum"))
{
usage();
}
break;
case 'b':
config.bulk = true;
break;
case 'C':
config.startPolicy = StartPolicy.CLIENT;
break;
case 'h':
if (i == args.Length - 1)
{
usage();
}
i++;
config.home = args[i];
break;
case 'l':
case 'L':
if (i == args.Length - 1)
{
usage();
}
if (args[i].Equals("-L"))
{
isCreator = true;
}
i++;
string[] words = args[i].Split(':');
if (words.Length != 2)
{
Console.Error.WriteLine("Invalid host " +
"specification host:port needed.");
usage();
}
try
{
tmpPort = uint.Parse(words[1]);
} catch (InvalidCastException)
{
Console.Error.WriteLine("Invalid host " +
"specification, could not parse port number.");
usage();
}
config.localSite.Host = words[0];
config.localSite.Port = tmpPort;
config.localSite.GroupCreator = isCreator;
config.localSite.LocalSite = true;
break;
case 'M':
config.startPolicy = StartPolicy.MASTER;
break;
case 'p':
if (i == args.Length - 1)
{
usage();
}
i++;
try
{
config.priority = uint.Parse(args[i]);
} catch (InvalidCastException)
{
Console.Error.WriteLine("Unable to parse priority.");
usage();
}
break;
case 'r':
case 'R':
if (i == args.Length - 1)
{
usage();
}
if (args[i].Equals("-R"))
{
isPeer = true;
}
i++;
words = args[i].Split(':');
if (words.Length != 2)
{
Console.Error.WriteLine("Invalid host " +
"specification host:port needed.");
usage();
}
try
{
tmpPort = uint.Parse(words[1]);
} catch (InvalidCastException)
{
Console.Error.WriteLine("Invalid host " +
"specification, could not parse port number.");
usage();
}
DbSiteConfig remoteConfig = new DbSiteConfig();
remoteConfig.Helper = true;
remoteConfig.Host = words[0];
remoteConfig.Port = tmpPort;
remoteConfig.Peer = isPeer;
config.remoteSites.Add(remoteConfig);
break;
case 'v':
config.verbose = true;
break;
default:
Console.Error.WriteLine(
"Unrecognized option: " + args[i]);
usage();
break;
}
}
/* Error check command line. */
if (config.localSite.Host == null || config.home.Length == 0)
{
usage();
}
RepQuoteExample runner = null;
try
{
runner = new RepQuoteExample();
runner.init(config);
runner.doloop();
runner.terminate();
runner = null;
} catch (DatabaseException dbErr)
{
Console.Error.WriteLine("Caught an exception during " +
"initialization or processing: " + dbErr);
if (runner != null)
{
runner.terminate();
}
}
} /* End main. */
public int init(RepConfig config)
{
int ret = 0;
DatabaseEnvironmentConfig envConfig = new DatabaseEnvironmentConfig();
envConfig.ErrorPrefix = RepConfig.progname;
envConfig.RepSystemCfg = new ReplicationConfig();
envConfig.RepSystemCfg.RepmgrSitesConfig.Add(config.localSite);
for (int i = 0; i < config.remoteSites.Count; i++)
envConfig.RepSystemCfg.RepmgrSitesConfig.Add(config.remoteSites[i]);
envConfig.RepSystemCfg.BulkTransfer = config.bulk;
/*
* Configure heartbeat timeouts so that repmgr monitors the
* health of the TCP connection. Master sites broadcast a heartbeat
* at the frequency specified by the DB_REP_HEARTBEAT_SEND timeout.
* Client sites wait for message activity the length of the
* DB_REP_HEARTBEAT_MONITOR timeout before concluding that the
* connection to the master is lost. The DB_REP_HEARTBEAT_MONITOR
* timeout should be longer than the DB_REP_HEARTBEAT_SEND timeout.
*/
envConfig.RepSystemCfg.HeartbeatMonitor = 10000000;
envConfig.RepSystemCfg.HeartbeatSend = 5000000;
/*
* Set replication group election priority for this environment.
* An election first selects the site with the most recent log
* records as the new master. If multiple sites have the most
* recent log records, the site with the highest priority value
* is selected as master.
*/
envConfig.RepSystemCfg.Priority = config.priority;
envConfig.MPoolSystemCfg = new MPoolConfig();
envConfig.MPoolSystemCfg.CacheSize = RepConfig.CACHESIZE;
envConfig.TxnNoSync = true;
envConfig.EventNotify = new EventNotifyDelegate(RepQuoteEventHandler);
/*
* Set the policy that determines how master and client sites
* handle acknowledgement of replication messages needed for
* permanent records. The default policy of "quorum" requires only
* a quorum of electable peers sufficient to ensure a permanent
* record remains durable if an election is held. The "all" option
* requires all clients to acknowledge a permanent replication
* message instead.
*/
envConfig.RepSystemCfg.RepMgrAckPolicy = config.ackPolicy;
/*
* Set the threshold for the minimum and maximum time the client
* waits before requesting retransmission of a missing message.
* Base these values on the performance and load characteristics
* of the master and client host platforms as well as the round
* trip message time.
*/
envConfig.RepSystemCfg.RetransmissionRequest(20000, 500000);
/*
* Configure deadlock detection to ensure that any deadlocks
* are broken by having one of the conflicting lock requests
* rejected. DB_LOCK_DEFAULT uses the lock policy specified
* at environment creation time or DB_LOCK_RANDOM if none was
* specified.
*/
envConfig.LockSystemCfg = new LockingConfig();
envConfig.LockSystemCfg.DeadlockResolution = DeadlockPolicy.DEFAULT;
envConfig.Create = true;
envConfig.RunRecovery = true;
envConfig.FreeThreaded = true;
envConfig.UseReplication = true;
envConfig.UseLocking = true;
envConfig.UseLogging = true;
envConfig.UseMPool = true;
envConfig.UseTxns = true;
envConfig.Verbosity = new VerboseMessages();
envConfig.Verbosity.Replication = config.verbose;
try
{
dbenv = RepQuoteEnvironment.Open(config.home, envConfig);
} catch(DatabaseException e)
{
Console.WriteLine("Fail to open environment: " + e.Message);
return 1;
}
/* The following base replication features may also be useful to your
* application. See Berkeley DB documentation for more details.
* - Master leases: Provide stricter consistency for data reads
* on a master site.
* - Timeouts: Customize the amount of time Berkeley DB waits
* for such things as an election to be concluded or a master
* lease to be granted.
* - Delayed client synchronization: Manage the master site's
* resources by spreading out resource-intensive client
* synchronizations.
* - Blocked client operations: Return immediately with an error
* instead of waiting indefinitely if a client operation is
* blocked by an ongoing client synchronization.
*
* The following repmgr features may also be useful to your
* application. See Berkeley DB documentation for more details.
* - Two-site strict majority rule - In a two-site replication
* group, require both sites to be available to elect a new
* master.
* - Timeouts - Customize the amount of time repmgr waits
* for such things as waiting for acknowledgements or attempting
* to reconnect to other sites.
* - Site list - return a list of sites currently known to repmgr.
*/
/* Start checkpoint and log archive support threads. */
checkpointThread = new Thread(new ThreadStart(CheckPoint));
checkpointThread.Start();
logArchiveThread = new Thread(new ThreadStart(LogArchive));
logArchiveThread.Start();
/* Start replication manager. */
if (config.startPolicy == StartPolicy.CLIENT)
dbenv.env.RepMgrStartClient(3);
else if (config.startPolicy == StartPolicy.ELECTION)
dbenv.env.RepMgrStartClient(3, true);
else if (config.startPolicy == StartPolicy.MASTER)
dbenv.env.RepMgrStartMaster(3);
return ret;
}
public int init(RepConfig config)
{
int ret = 0;
DatabaseEnvironmentConfig envConfig = new DatabaseEnvironmentConfig();
envConfig.ErrorPrefix = RepConfig.progname;
envConfig.RepSystemCfg = new ReplicationConfig();
envConfig.RepSystemCfg.RepmgrSitesConfig.Add(config.localSite);
for (int i = 0; i < config.remoteSites.Count; i++)
{
envConfig.RepSystemCfg.RepmgrSitesConfig.Add(config.remoteSites[i]);
}
envConfig.RepSystemCfg.BulkTransfer = config.bulk;
/*
* Configure heartbeat timeouts so that repmgr monitors the
* health of the TCP connection. Master sites broadcast a heartbeat
* at the frequency specified by the DB_REP_HEARTBEAT_SEND timeout.
* Client sites wait for message activity the length of the
* DB_REP_HEARTBEAT_MONITOR timeout before concluding that the
* connection to the master is lost. The DB_REP_HEARTBEAT_MONITOR
* timeout should be longer than the DB_REP_HEARTBEAT_SEND timeout.
*/
envConfig.RepSystemCfg.HeartbeatMonitor = 10000000;
envConfig.RepSystemCfg.HeartbeatSend = 5000000;
/*
* Set replication group election priority for this environment.
* An election first selects the site with the most recent log
* records as the new master. If multiple sites have the most
* recent log records, the site with the highest priority value
* is selected as master.
*/
envConfig.RepSystemCfg.Priority = config.priority;
envConfig.MPoolSystemCfg = new MPoolConfig();
envConfig.MPoolSystemCfg.CacheSize = RepConfig.CACHESIZE;
envConfig.TxnNoSync = true;
envConfig.EventNotify = new EventNotifyDelegate(RepQuoteEventHandler);
/*
* Set the policy that determines how master and client sites
* handle acknowledgement of replication messages needed for
* permanent records. The default policy of "quorum" requires only
* a quorum of electable peers sufficient to ensure a permanent
* record remains durable if an election is held. The "all" option
* requires all clients to acknowledge a permanent replication
* message instead.
*/
envConfig.RepSystemCfg.RepMgrAckPolicy = config.ackPolicy;
/*
* Set the threshold for the minimum and maximum time the client
* waits before requesting retransmission of a missing message.
* Base these values on the performance and load characteristics
* of the master and client host platforms as well as the round
* trip message time.
*/
envConfig.RepSystemCfg.RetransmissionRequest(20000, 500000);
/*
* Configure deadlock detection to ensure that any deadlocks
* are broken by having one of the conflicting lock requests
* rejected. DB_LOCK_DEFAULT uses the lock policy specified
* at environment creation time or DB_LOCK_RANDOM if none was
* specified.
*/
envConfig.LockSystemCfg = new LockingConfig();
envConfig.LockSystemCfg.DeadlockResolution = DeadlockPolicy.DEFAULT;
envConfig.Create = true;
envConfig.RunRecovery = true;
envConfig.FreeThreaded = true;
envConfig.UseReplication = true;
envConfig.UseLocking = true;
envConfig.UseLogging = true;
envConfig.UseMPool = true;
envConfig.UseTxns = true;
envConfig.Verbosity = new VerboseMessages();
envConfig.Verbosity.Replication = config.verbose;
try
{
dbenv = RepQuoteEnvironment.Open(config.home, envConfig);
} catch (DatabaseException e)
{
Console.WriteLine("Fail to open environment: " + e.Message);
return(1);
}
/* The following base replication features may also be useful to your
* application. See Berkeley DB documentation for more details.
* - Master leases: Provide stricter consistency for data reads
* on a master site.
* - Timeouts: Customize the amount of time Berkeley DB waits
* for such things as an election to be concluded or a master
* lease to be granted.
* - Delayed client synchronization: Manage the master site's
* resources by spreading out resource-intensive client
* synchronizations.
* - Blocked client operations: Return immediately with an error
* instead of waiting indefinitely if a client operation is
* blocked by an ongoing client synchronization.
*
* The following repmgr features may also be useful to your
* application. See Berkeley DB documentation for more details.
* - Two-site strict majority rule - In a two-site replication
* group, require both sites to be available to elect a new
* master.
* - Timeouts - Customize the amount of time repmgr waits
* for such things as waiting for acknowledgements or attempting
* to reconnect to other sites.
* - Site list - return a list of sites currently known to repmgr.
*/
/* Start checkpoint and log archive support threads. */
checkpointThread = new Thread(new ThreadStart(CheckPoint));
checkpointThread.Start();
logArchiveThread = new Thread(new ThreadStart(LogArchive));
logArchiveThread.Start();
/* Start replication manager. */
if (config.startPolicy == StartPolicy.CLIENT)
{
dbenv.env.RepMgrStartClient(3);
}
else if (config.startPolicy == StartPolicy.ELECTION)
{
dbenv.env.RepMgrStartClient(3, true);
}
else if (config.startPolicy == StartPolicy.MASTER)
{
dbenv.env.RepMgrStartMaster(3);
}
return(ret);
}