/// <summary>
/// execute heal connection tasks if the actual number of connections in pool is less than expected
/// </summary>
/// <param name="pool"> connection pool </param>
/// <param name="url"> target url </param>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: private void healIfNeed(ConnectionPool pool, Url url) throws exception.RemotingException, ThreadInterruptedException
private void healIfNeed(ConnectionPool pool, Url url)
{
string poolKey = url.UniqueKey;
// only when async creating connections done
// and the actual size of connections less than expected, the healing task can be run.
if (pool.AsyncCreationDone && pool.size() < url.ConnNum)
{
this.healTasks.TryGetValue(poolKey, out var task);
if (null == task)
{
FutureTask newTask = new FutureTask(new HealConnectionCall(this, url, pool));
if (!healTasks.ContainsKey(poolKey))
{
healTasks.AddOrUpdate(poolKey, newTask, (_, __) => newTask);
task = newTask;
}
else
{
healTasks.TryGetValue(poolKey, out task);
}
task.run();
}
try
{
int numAfterHeal = (int)task.@get();
if (logger.IsEnabled(LogLevel.Debug))
{
logger.LogDebug("[NOTIFYME] - conn num after heal {}, expected {}, warmup {}", numAfterHeal, url.ConnNum, url.ConnWarmup);
}
}
catch (ThreadInterruptedException)
{
healTasks.TryRemove(poolKey, out _);
throw;
}
catch (ExecutionException e)
{
healTasks.TryRemove(poolKey, out _);
System.Exception cause = e.InnerException;
if (cause is RemotingException)
{
throw (RemotingException)cause;
}
else
{
FutureTaskUtil.launderThrowable(cause);
}
}
// heal task is one-off, remove from cache directly after run
healTasks.TryRemove(poolKey, out _);
}
}
/// <summary>
/// remove task and remove all connections
/// </summary>
/// <param name="poolKey"> target pool key </param>
protected internal virtual void removeTask(string poolKey)
{
connTasks.TryRemove(poolKey, out var task);
if (null != task)
{
ConnectionPool pool = (ConnectionPool)FutureTaskUtil.getFutureTaskResult(task, logger);
if (null != pool)
{
pool.removeAllAndTryClose();
}
}
}
public virtual void monitor(ConcurrentDictionary <string, RunStateRecordedFutureTask> connPools)
{
try
{
if (connPools == null || connPools.Count == 0)
{
return;
}
foreach (var entry in connPools)
{
string poolKey = entry.Key;
ConnectionPool pool = (ConnectionPool)FutureTaskUtil.getFutureTaskResult(entry.Value, logger);
var serviceOnConnections = new List <Connection>();
var serviceOffConnections = new List <Connection>();
foreach (var connection in pool.All)
{
if (isConnectionOn(connection))
{
serviceOnConnections.Add(connection);
}
else
{
serviceOffConnections.Add(connection);
}
}
if (serviceOnConnections.Count > connectionThreshold)
{
Connection freshSelectConnect = (Connection)serviceOnConnections[random.nextInt(serviceOnConnections.Count)];
freshSelectConnect.setAttribute(Configs.CONN_SERVICE_STATUS, Configs.CONN_SERVICE_STATUS_OFF);
serviceOffConnections.Add(freshSelectConnect);
}
else
{
if (logger.IsEnabled(LogLevel.Information))
{
logger.LogInformation("serviceOnConnections({}) size[{}], CONNECTION_THRESHOLD[{}].", poolKey, serviceOnConnections.Count, connectionThreshold);
}
}
foreach (var offConn in serviceOffConnections)
{
if (offConn.InvokeFutureMapFinish)
{
if (offConn.Fine)
{
offConn.close();
}
}
else
{
if (logger.IsEnabled(LogLevel.Information))
{
logger.LogInformation("Address={} won't close at this schedule turn", offConn.Channel.RemoteAddress.ToString());
}
}
}
}
}
catch (Exception e)
{
logger.LogError("ScheduledDisconnectStrategy monitor error", e);
}
}
/// <summary>
/// Get the mapping instance of <seealso cref="ConnectionPool"/> with the specified poolKey,
/// or create one if there is none mapping in connTasks.
/// </summary>
/// <param name="poolKey"> mapping key of <seealso cref="ConnectionPool"/> </param>
/// <param name="callable"> the callable task </param>
/// <returns> a non-nullable instance of <seealso cref="ConnectionPool"/> </returns>
/// <exception cref="RemotingException"> if there is no way to get an available <seealso cref="ConnectionPool"/> </exception>
/// <exception cref="ThreadInterruptedException"> </exception>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: private ConnectionPool getConnectionPoolAndCreateIfAbsent(String poolKey, java.util.concurrent.Callable<ConnectionPool> callable) throws exception.RemotingException, ThreadInterruptedException
private ConnectionPool getConnectionPoolAndCreateIfAbsent(string poolKey, Callable callable)
{
RunStateRecordedFutureTask initialTask;
ConnectionPool pool = null;
int retry = Constants.DEFAULT_RETRY_TIMES;
int timesOfResultNull = 0;
int timesOfInterrupt = 0;
for (int i = 0; (i < retry) && (pool == null); ++i)
{
connTasks.TryGetValue(poolKey, out initialTask);
if (null == initialTask)
{
RunStateRecordedFutureTask newTask = new RunStateRecordedFutureTask(callable);
if (!connTasks.ContainsKey(poolKey))
{
connTasks.AddOrUpdate(poolKey, newTask, (_, __) => newTask);
initialTask = newTask;
}
else
{
connTasks.TryGetValue(poolKey, out initialTask);
}
initialTask.run();
}
try
{
pool = (ConnectionPool)initialTask.get();
if (null == pool)
{
if (i + 1 < retry)
{
timesOfResultNull++;
continue;
}
connTasks.TryRemove(poolKey, out _);
string errMsg = "Get future task result null for poolKey [" + poolKey + "] after [" + (timesOfResultNull + 1) + "] times try.";
throw new RemotingException(errMsg);
}
}
catch (ThreadInterruptedException e)
{
if (i + 1 < retry)
{
timesOfInterrupt++;
continue; // retry if interrupted
}
connTasks.TryRemove(poolKey, out _);
logger.LogWarning("Future task of poolKey {} interrupted {} times. ThreadInterruptedException thrown and stop retry.", poolKey, timesOfInterrupt + 1, e);
throw;
}
catch (ExecutionException e)
{
// DO NOT retry if ExecutionException occurred
connTasks.TryRemove(poolKey, out _);
System.Exception cause = e.InnerException;
if (cause is RemotingException)
{
throw (RemotingException)cause;
}
else
{
FutureTaskUtil.launderThrowable(cause);
}
}
}
return(pool);
}
/// <summary>
/// get connection pool from future task
/// </summary>
/// <param name="task"> future task </param>
/// <returns> connection pool </returns>
private ConnectionPool getConnectionPool(RunStateRecordedFutureTask task)
{
return((ConnectionPool)FutureTaskUtil.getFutureTaskResult(task, logger));
}