/// <summary>
/// Compiles the input linqExpression into a Linq expression tree
/// </summary>
/// <param name="linqExpression">The linqExpression.</param>
/// <returns></returns>
public Func<object, object, object> CompileFunction(LinqExpressionToRun linqExpression)
{
using (_compileFunctionTimer.NewContext())
{
return _handler.CompileFunction(linqExpression);
}
}
/// <summary>
/// Compiles the input linqExpression into a Linq expression tree
/// </summary>
/// <param name="linqExpression">The linqExpression.</param>
/// <returns></returns>
public Action<object, object> CompileAction(LinqExpressionToRun linqExpression)
{
if (linqExpression.Unique) //don't bother caching
{
_counterActionCacheUnique.Increment();
return _handler.CompileAction(linqExpression);
}
var key = GenerateKey(linqExpression);
var result = (Action<object, object>)_cache[key];
if (result != null)
{
_counterActionCacheHit.Increment(key);
return result;
}
result = _handler.CompileAction(linqExpression);
if (!_cache.Contains(key))
{
_counterActionCacheMiss.Increment(key);
_cache.Add(key, result, _itemPolicy);
}
return result;
}
internal ScheduledJob(JobScheduler scheduler,
string name,
IJobSchedule schedule,
IProducerMethodJobQueue queue,
LinqExpressionToRun expressionToRun,
IGetTime time,
string route
)
{
_scheduler = scheduler;
Name = name;
Schedule = schedule;
_queue = queue;
_expressionToRun = expressionToRun;
_getTime = time;
Route = route;
}
/// <summary>
/// Compiles the input linqExpression into a Linq expression tree
/// </summary>
/// <param name="linqExpression">The linqExpression.</param>
/// <returns></returns>
public Func<object, object, object> CompileFunction(LinqExpressionToRun linqExpression)
{
Guard.NotNull(() => linqExpression, linqExpression);
Guard.NotNullOrEmpty(() => linqExpression.Linq, linqExpression.Linq);
var compiler = _objectPool.GetObject();
try
{
return compiler.CompileFunction(linqExpression);
}
catch (Exception error)
{
throw new CompileException($"Failed to compile linq expression [{linqExpression.Linq}]", error,
linqExpression.Linq);
}
finally
{
_objectPool.ReturnObject(compiler);
}
}
/// <summary>
/// Sends the specified linqExpression for execution.
/// </summary>
/// <param name="linqExpression">The linqExpression.</param>
/// <param name="timeOut">The time out.</param>
/// <param name="data">The data.</param>
/// <returns></returns>
/// <remarks>Your expression must return a type of object, or the JSON serializer may throw casting errors</remarks>
public async Task<IReceivedMessage<object>> SendAsync(LinqExpressionToRun linqExpression, TimeSpan timeOut,
IAdditionalMessageData data = null)
{
var message = new MessageExpression(MessageExpressionPayloads.FunctionText, _compositeSerialization.InternalSerializer.ConvertToBytes(linqExpression));
return await _queue.SendAsync(message, timeOut, data).ConfigureAwait(false);
}
/// <summary>
/// Sends the specified linqExpression for execution.
/// </summary>
/// <param name="linqExpression">The linqExpression.</param>
/// <param name="timeOut">The time out.</param>
/// <param name="data">The data.</param>
/// <returns></returns>
/// <remarks>Your expression must return a type of object, or the JSON serializer may throw casting errors</remarks>
public IReceivedMessage<object> Send(LinqExpressionToRun linqExpression, TimeSpan timeOut, IAdditionalMessageData data = null)
{
var message = new MessageExpression(MessageExpressionPayloads.FunctionText, _compositeSerialization.InternalSerializer.ConvertToBytes(linqExpression));
return _queue.Send(message, timeOut, data);
}
/// <summary>
/// Sends the specified action to the specified queue.
/// </summary>
/// <param name="job">The job.</param>
/// <param name="scheduledTime">The scheduled time.</param>
/// <param name="expressionToRun">The expression to run.</param>
/// <returns></returns>
public async Task<IJobQueueOutputMessage> SendAsync(IScheduledJob job, DateTimeOffset scheduledTime, LinqExpressionToRun expressionToRun)
{
var data = SendPreChecks(job.Name, scheduledTime);
if (data != null)
return data;
var messageData = new AdditionalMessageData();
SetMetaDataForJob(job.Name, scheduledTime,
new DateTimeOffset(GetTimeFactory.Create().GetCurrentUtcDate()), job.Route, messageData);
var message = await Queue.SendAsync(expressionToRun, messageData).ConfigureAwait(false);
var result = ProcessResult(job, scheduledTime, message);
if (result != null) return result;
//try one more time
result = ProcessResult(job, scheduledTime,
await Queue.SendAsync(expressionToRun, messageData).ConfigureAwait(false));
return result ?? new JobQueueOutputMessage(JobQueuedStatus.Failed);
}
/// <summary>
/// Generates a key for the cache
/// </summary>
/// <param name="linqExpression">The linq expression.</param>
/// <returns></returns>
private string GenerateKey(LinqExpressionToRun linqExpression)
{
var builder = new StringBuilder();
builder.Append(linqExpression.Linq);
foreach (var field in linqExpression.References)
{
builder.Append(field);
builder.Append("|");
}
foreach (var field in linqExpression.Usings)
{
builder.Append(field);
builder.Append("|");
}
return builder.ToString();
}
/// <summary>
/// Sends the specified linqExpression to be executed. Additional message meta data is optional.
/// </summary>
/// <param name="linqExpression">The linqExpression to execute.</param>
/// <param name="data">The optional additional message data.</param>
/// <returns></returns>
public async Task<IQueueOutputMessage> SendAsync(LinqExpressionToRun linqExpression, IAdditionalMessageData data = null)
{
var message = new MessageExpression(MessageExpressionPayloads.ActionText, _compositeSerialization.InternalSerializer.ConvertToBytes(linqExpression));
return await _queue.SendAsync(message, data).ConfigureAwait(false);
}
/// <summary>
/// Sends the specified linqExpression to be executed. Additional message meta data is optional.
/// </summary>
/// <param name="linqExpression">The linqExpression to execute.</param>
/// <param name="data">The optional additional message data.</param>
/// <returns></returns>
public IQueueOutputMessage Send(LinqExpressionToRun linqExpression, IAdditionalMessageData data = null)
{
var message = new MessageExpression(MessageExpressionPayloads.ActionText,
_compositeSerialization.InternalSerializer.ConvertToBytes(linqExpression));
return _queue.Send(message, data);
}
/// <summary>
/// Sends the specified dynamic linqExpression to be executed.
/// </summary>
/// <param name="job">The job.</param>
/// <param name="scheduledTime">The scheduled time.</param>
/// <param name="linqExpression">The linqExpression to execute.</param>
/// <returns></returns>
public async Task<IJobQueueOutputMessage> SendAsync(IScheduledJob job, DateTimeOffset scheduledTime, LinqExpressionToRun linqExpression)
{
if(!_started) throw new DotNetWorkQueueException("Start must be called before sending jobs");
return await _sendJobToQueue.SendAsync(job, scheduledTime, linqExpression).ConfigureAwait(false);
}
/// <summary>
/// Compiles the input linqExpression into a Linq expression tree
/// </summary>
/// <param name="linqExpression">The linqExpression.</param>
/// <returns></returns>
public Func<object, object, object> CompileFunction(LinqExpressionToRun linqExpression)
{
_compiler.References = DefaultReferences.Union(linqExpression.References).ToArray();
_compiler.Usings = DefaultUsings.Union(linqExpression.Usings).ToArray();
return _compiler.ParseLambdaExpr<Func<object, object, object>>(linqExpression.Linq).Compile();
}
