/// <summary>
/// This method creates a service message and injects it in to the execution path and bypasses the listener infrastructure.
/// </summary>
/// <param name="dispatcher">The Microservice dispatcher.</param>
/// <param name="header">The message header to identify the recipient.</param>
/// <param name="package">The object package to process.</param>
/// <param name="ChannelPriority">The priority that the message should be processed. The default is 1. If this message is not a valid value, it will be matched to the nearest valid value.</param>
/// <param name="options">The process options.</param>
/// <param name="release">The release action which is called when the payload has been executed by the receiving commands.</param>
/// <param name="responseHeader">This is the optional response header</param>
/// <param name="ResponseChannelPriority">This is the response channel priority. This will be set if the response header is not null. The default priority is 1.</param>
/// <param name="originatorServiceId">This optional parameter allows you to set the originator serviceId</param>
public static void Process(this IMicroserviceDispatch dispatcher
, ServiceMessageHeader header
, object package = null
, int ChannelPriority = 1
, ProcessOptions options = ProcessOptions.RouteExternal | ProcessOptions.RouteInternal
, Action <bool, Guid> release = null
, ServiceMessageHeader responseHeader = null
, int ResponseChannelPriority = 1
, string originatorServiceId = null
)
{
var message = new ServiceMessage(header, responseHeader);
if (originatorServiceId != null)
{
message.OriginatorServiceId = originatorServiceId;
}
message.ChannelPriority = ChannelPriority;
message.Holder = ServiceHandlerContext.CreateWithObject(package);
//if (package != null)
// message.Blob = dispatcher.Serialization.PayloadSerialize(package);
if (responseHeader != null)
{
message.ResponseChannelPriority = ResponseChannelPriority;
}
dispatcher.Process(message, options, release);
}
/// <summary>
/// Checks the incoming holder to ensure that it is correctly configured.
/// </summary>
/// <param name="holder">The holder.</param>
/// <returns>Returns true if the checks are passed.</returns>
/// <exception cref="ArgumentNullException">holder</exception>
protected virtual bool HolderChecks(ServiceHandlerContext holder)
{
if (holder == null)
{
throw new ArgumentNullException("holder", "The serialization holder cannot be null.");
}
return(holder.Blob != null);
}
/// <summary>
/// Returns true if the holder can be deserialized.
/// </summary>
/// <param name="holder">The holder.</param>
/// <returns>
/// Returns true if it can be deserialized.
/// </returns>
/// <exception cref="ArgumentNullException">holder</exception>
public virtual bool SupportsDeserialization(ServiceHandlerContext holder)
{
if (holder == null)
{
throw new ArgumentNullException("holder");
}
return((holder.ContentType?.Id ?? "").Equals(Id, StringComparison.InvariantCultureIgnoreCase));
}
/// <summary>
/// Returns true if the Content in the holder can be serialized.
/// </summary>
/// <param name="holder">The holder.</param>
/// <returns>
/// Returns true if it can be serialized.
/// </returns>
/// <exception cref="ArgumentNullException">holder</exception>
public virtual bool SupportsSerialization(ServiceHandlerContext holder)
{
if (holder == null)
{
throw new ArgumentNullException("holder");
}
return(holder.HasObject);
}
/// <summary>
/// Serializes the specified holder.
/// </summary>
/// <param name="holder">The holder.</param>
/// <exception cref="NotSupportedException">The serialize action is not set.</exception>
public override void Serialize(ServiceHandlerContext holder)
{
if (Serializer == null)
{
throw new NotSupportedException("The serialize action is not set.");
}
Serializer(holder);
}
/// <summary>
/// A boolean function that returns true if the compression type is supported.
/// </summary>
/// <param name="holder">The serialization holder.</param>
/// <returns>
/// Returns true when supported.
/// </returns>
/// <exception cref="ArgumentNullException">holder</exception>
public virtual bool SupportsContentEncoding(ServiceHandlerContext holder)
{
if (holder == null)
{
throw new ArgumentNullException("holder");
}
return(holder.ContentEncoding != null &&
string.Equals(holder.ContentEncoding, Id, StringComparison.InvariantCultureIgnoreCase));
}
/// <summary>
/// Tries to compress the outgoing holder.
/// </summary>
/// <param name="collection">The collection.</param>
/// <param name="blob">The binary array.</param>
/// <returns>Returns true if the Content is serialized correctly to a binary blob.</returns>
public static O DeserializeToObject <O>(this ServiceHandlerCollection <IServiceHandlerSerialization> collection, byte[] blob)
{
ServiceHandlerContext context = blob;
if (collection.TryDeserialize(context))
{
return((O)context.Object);
}
throw new PayloadDeserializationException();
}
/// <summary>
/// Tries to compress the outgoing holder.
/// </summary>
/// <param name="collection">The collection.</param>
/// <param name="item">The item.</param>
/// <returns>Returns true if the Content is serialized correctly to a binary blob.</returns>
public static byte[] SerializeToBlob(this ServiceHandlerCollection <IServiceHandlerSerialization> collection, object item)
{
var context = ServiceHandlerContext.CreateWithObject(item);
//context.ContentType = collection.
if (collection.TrySerialize(context))
{
return(context.Blob);
}
throw new PayloadSerializationException();
}
/// <summary>
/// Extracts the content encoding in to a matchable format.
/// </summary>
/// <param name="holder">The service holder.</param>
/// <param name="value">The value.</param>
/// <returns>Returns true if it can be extracted.</returns>
public static bool ExtractContentEncoding(ServiceHandlerContext holder, out string value)
{
value = null;
if (!holder.HasContentEncoding)
{
return(false);
}
value = holder.ContentEncoding.Id;
return(true);
}
public override void Serialize(ServiceHandlerContext holder)
{
using (var stream = new MemoryStream())
using (var streamWriter = new StreamWriter(stream))
using (var textWriter = new JsonTextWriter(streamWriter))
{
mJsonSerializer.Serialize(textWriter, holder.Object);
streamWriter.Flush();
stream.Position = 0;
holder.SetBlob(stream.ToArray());
}
holder.ContentType = Id + $"; type=\"{holder.Object.GetType().ToString()}\"";
}
/// <summary>
/// This method marshals the RepositoryHolder and transmits it to the remote Microservice.
/// </summary>
/// <typeparam Name="KT">The key type.</typeparam>
/// <typeparam Name="ET">The entity type.</typeparam>
/// <param Name="actionType">The action type.</param>
/// <param Name="rq">The repository holder request.</param>
/// <returns>Returns an async task that will be signalled when the request completes or times out.</returns>
protected override async Task <RepositoryHolder <KT, ET> > TransmitInternal <KT, ET>(
string actionType, RepositoryHolder <KT, ET> rq, ProcessOptions?routing = null, IPrincipal principal = null)
{
try
{
StatisticsInternal.ActiveIncrement();
var payload = TransmissionPayload.Create(Policy.TransmissionPayloadTraceEnabled);
payload.SecurityPrincipal = TransmissionPayload.ConvertToClaimsPrincipal(principal ?? Thread.CurrentPrincipal);
// Set the process correlation key to the correlation id if passed through the rq settings
if (!string.IsNullOrEmpty(rq.Settings?.CorrelationId))
{
payload.Message.ProcessCorrelationKey = rq.Settings.CorrelationId;
}
bool processAsync = rq.Settings?.ProcessAsync ?? false;
payload.Message.ChannelPriority = processAsync ? 0 : 1;
payload.Options = routing ?? RoutingDefault ?? ProcessOptions.RouteExternal;
payload.Message.Holder = ServiceHandlerContext.CreateWithObject(rq);
payload.Message.ResponseChannelId = ResponseChannelId;
payload.Message.ResponseChannelId = ResponseId.Header.ChannelId;
payload.Message.ResponseMessageType = ResponseId.Header.MessageType;
payload.Message.ResponseActionType = ResponseId.Header.ActionType;
payload.Message.ResponseChannelPriority = payload.Message.ChannelPriority;
payload.Message.ChannelId = ChannelId;
payload.Message.MessageType = EntityType;
payload.Message.ActionType = actionType;
payload.MaxProcessingTime = rq.Settings?.WaitTime ?? mDefaultRequestTimespan;
return(await OutgoingRequestOut(payload, ProcessResponse <KT, ET>, processAsync));
}
catch (Exception ex)
{
string key = rq != null && rq.Key != null?rq.Key.ToString() : string.Empty;
Collector?.LogException($"Error transmitting {actionType}-{key} internally", ex);
throw;
}
}
/// <summary>
/// Returns true if the serializer supports this content type for serialization.
/// </summary>
/// <param name="holder">The holder.</param>
/// <returns>
/// Returns true if supported.
/// </returns>
public virtual bool SupportsContentTypeSerialization(ServiceHandlerContext holder)
{
if (!holder.HasObject)
{
return(false);
}
Type cType = holder.ObjectType ?? holder.Object?.GetType();
if (cType == null)
{
return(false);
}
return(SupportsContentTypeSerialization(cType));
}
/// <summary>
/// Tries to serialize the outgoing payload.
/// </summary>
/// <param name="holder">The holder.</param>
/// <returns>
/// Returns true if the Content is serialized correctly to a binary blob.
/// </returns>
public virtual bool TrySerialize(ServiceHandlerContext holder)
{
if (!SupportsSerialization(holder))
{
return(false);
}
try
{
Serialize(holder);
return(true);
}
catch (Exception) { }
return(false);
}
/// <summary>
/// Tries to compress the outgoing payload.
/// </summary>
/// <param name="holder">The holder.</param>
/// <returns>
/// Returns true if the Content is compressed correctly to a binary blob.
/// </returns>
public bool TryCompress(ServiceHandlerContext holder)
{
string id;
if (!ExtractContentEncoding(holder, out id))
{
return(false);
}
IServiceHandlerCompression comp;
if (!Compression.TryGet(id, out comp))
{
return(false);
}
return(comp.TryCompression(holder));
}
/// <summary>
/// Encodes the blobs from compressed to uncompressed.
/// </summary>
/// <param name="holder">The holder.</param>
/// <param name="getStream">The decompress stream create function.</param>
/// <returns>Returns true if encoded without error.</returns>
protected virtual bool Decompress(ServiceHandlerContext holder, Func <Stream, Stream> getStream)
{
try
{
using (MemoryStream msIn = new MemoryStream(holder.Blob))
using (Stream decompress = getStream(msIn))
using (MemoryStream msOut = new MemoryStream())
{
decompress.CopyTo(msOut);
decompress.Close();
holder.SetBlob(msOut.ToArray(), holder.ContentType);
}
}
catch (Exception ex)
{
return(false);
}
return(true);
}
/// <summary>
/// Encodes the blobs from uncompressed to compressed.
/// </summary>
/// <param name="holder">The holder.</param>
/// <param name="getStream">The get compressor stream function.</param>
/// <param name="contentEncoding">The content encoding parameter.</param>
/// <returns>Returns true if encoded without error.</returns>
/// <exception cref="ArgumentNullException">holder</exception>
protected virtual bool Compress(ServiceHandlerContext holder, Func <Stream, Stream> getStream, string contentEncoding)
{
try
{
using (MemoryStream ms = new MemoryStream())
using (Stream compress = getStream(ms))
{
compress.Write(holder.Blob, 0, holder.Blob.Length);
compress.Close();
holder.SetBlob(ms.ToArray(), holder.ContentType, contentEncoding);
}
}
catch (Exception ex)
{
return(false);
}
return(true);
}
/// <summary>
/// Serializes the summary JSON object in the holder and sets the byte array.
/// </summary>
/// <param name="holder">The holder to set.</param>
public override void Serialize(ServiceHandlerContext holder)
{
var stats = holder.Object as Microservice.Statistics;
if (stats == null)
{
throw new ArgumentOutOfRangeException("The holder object is not of type MicroserviceStatistics");
}
dynamic message = new ExpandoObject();
message.Id = stats.Id.ExternalServiceId;
message.Status = stats.Status;
message.TS = DateTime.UtcNow.ToBinary();
message.Engine = $"{stats.Id.ServiceVersionId}/{stats.Id.ServiceEngineVersionId}";
message.Uptime = stats.Uptime;
message.Tasks = stats.Tasks.Message;
var authorData = JsonConvert.SerializeObject(message);
holder.SetBlob(Encoding.UTF8.GetBytes(authorData), maxLength: UdpHelper.PacketMaxSize);
}
/// <summary>
/// Initializes a new instance of the <see cref="SerializationHolderContentTypeException"/> class.
/// </summary>
/// <param name="holder">The holder.</param>
/// <param name="expectedType">The expected content type.</param>
public SerializationHolderContentTypeException(ServiceHandlerContext holder, string expectedType)
{
ContentTypeExpected = expectedType;
ContentTypeActual = holder?.ContentType;
}
/// <summary> /// Serializes the specified object in the holder and sets the byte array. /// </summary> /// <param name="holder">The holder.</param> public abstract void Serialize(ServiceHandlerContext holder);
/// <summary>
/// Tries to decompress the incoming holder.
/// </summary>
/// <param name="holder">The holder.</param>
/// <returns>
/// Returns true if the incoming binary payload is successfully decompressed.
/// </returns>
/// <exception cref="NotImplementedException"></exception>
public virtual bool TryDecompression(ServiceHandlerContext holder)
{
return(HolderChecks(holder) && Decompress(holder, GetDecompressionStream));
}
public override void Serialize(ServiceHandlerContext holder)
{
throw new NotImplementedException();
}
public override void Deserialize(ServiceHandlerContext holder)
{
//mJsonSerializer.Deserialize(
}
/// <summary>
/// Tries to compress the outgoing holder.
/// </summary>
/// <param name="collection">The collection.</param>
/// <param name="holder">The holder.</param>
/// <returns>Returns true if the Content is serialized correctly to a binary blob.</returns>
public static bool TrySerialize(this ServiceHandlerCollection <IServiceHandlerSerialization> collection, ServiceHandlerContext holder)
{
string id;
if (!ServiceHandlerContainer.ExtractContentType(holder, out id))
{
return(false);
}
IServiceHandlerSerialization sr = null;
if (!collection.TryGet(id, out sr))
{
return(false);
}
return(sr.TrySerialize(holder));
}
/// <summary>
/// This method is used to send requests to the remote command.
/// </summary>
/// <typeparam name="RQ">The request type.</typeparam>
/// <typeparam name="RS">The response type.</typeparam>
/// <param name="channelId">The header routing information.</param>
/// <param name="messageType">The header routing information.</param>
/// <param name="actionType">The header routing information.</param>
/// <param name="rq">The request object.</param>
/// <param name="rqSettings">The request settings. Use this to specifically set the timeout parameters.</param>
/// <param name="routingOptions">The routing options by default this will try internal and then external.</param>
/// <param name="processResponse"></param>
/// <param name="fallbackMaxProcessingTime">This is the fallback max processing time used if the timeout
/// is not set in the request settings.
/// If this is also null, the max time out will fall back to the policy settings.</param>
/// <param name="principal">This is the principal that you wish the command to be executed under.
/// By default this is taken from the calling thread if not passed.</param>
/// <returns>Returns the async response wrapper.</returns>
protected internal virtual async Task <ResponseWrapper <RS> > ProcessOutgoing <RQ, RS>(
string channelId, string messageType, string actionType
, RQ rq
, RequestSettings rqSettings = null
, ProcessOptions?routingOptions = null
, Func <TaskStatus, TransmissionPayload, bool, ResponseWrapper <RS> > processResponse = null
, TimeSpan?fallbackMaxProcessingTime = null
, IPrincipal principal = null
)
{
if (!Policy.OutgoingRequestsEnabled)
{
throw new OutgoingRequestsNotEnabledException();
}
TransmissionPayload payload = null;
try
{
StatisticsInternal.ActiveIncrement();
payload = TransmissionPayload.Create(Policy.TransmissionPayloadTraceEnabled);
payload.SecurityPrincipal = TransmissionPayload.ConvertToClaimsPrincipal(principal ?? Thread.CurrentPrincipal);
// Set the process correlation key to the correlation id, if passed through the request settings
if (!string.IsNullOrEmpty(rqSettings?.CorrelationId))
{
payload.Message.ProcessCorrelationKey = rqSettings.CorrelationId;
}
bool processAsync = rqSettings?.ProcessAsync ?? false;
payload.Options = routingOptions ?? ProcessOptions.RouteExternal | ProcessOptions.RouteInternal;
//Set the destination message
payload.Message.ChannelId = channelId ?? ChannelId;
payload.Message.MessageType = messageType;
payload.Message.ActionType = actionType;
payload.Message.ChannelPriority = processAsync ? 0 : 1;
//Set the response path
payload.Message.ResponseChannelId = ResponseId.Header.ChannelId;
payload.Message.ResponseMessageType = ResponseId.Header.MessageType;
payload.Message.ResponseActionType = ResponseId.Header.ActionType;
payload.Message.ResponseChannelPriority = payload.Message.ChannelPriority;
//Set the payload
payload.Message.Holder = ServiceHandlerContext.CreateWithObject(rq);
//Set the processing time
payload.MaxProcessingTime = rqSettings?.WaitTime ?? fallbackMaxProcessingTime ?? Policy.OutgoingRequestMaxProcessingTimeDefault;
//Transmit
return(await OutgoingRequestOut(payload, processResponse ?? ProcessOutgoingResponse <RS>, processAsync));
}
catch (Exception ex)
{
string key = payload?.Id.ToString() ?? string.Empty;
Collector?.LogException(string.Format("Error transmitting {0}-{1} internally", actionType, key), ex);
throw;
}
}
/// <summary>
/// Checks that a specific serializer is supported.
/// </summary>
/// <param name="collection">The collection.</param>
/// <param name="holder">The holder.</param>
/// <returns>Returns true when the holder ContentType is supported.</returns>
public static bool SupportsSerializer(this ServiceHandlerCollection <IServiceHandlerSerialization> collection, ServiceHandlerContext holder)
{
return(collection.Contains(holder.ContentType));
}
protected virtual void WriteEntity(FileStream fs, E entity)
{
var json = Transform.JsonMaker(entity);
var holder = ServiceHandlerContext.CreateWithObject(entity);
}
/// <summary>
/// Tries to compress the outgoing payload.
/// </summary>
/// <param name="holder">The holder.</param>
/// <returns>
/// Returns true if the Content is compressed correctly to a binary blob.
/// </returns>
/// <exception cref="NotImplementedException"></exception>
public virtual bool TryCompression(ServiceHandlerContext holder)
{
return(HolderChecks(holder) && Compress(holder, GetCompressionStream, Id));
}
/// <summary>
/// Returns true if the Content in the holder can be serialized.
/// </summary>
/// <param name="holder">The holder.</param>
/// <returns>
/// Returns true if it can be serialized.
/// </returns>
public override bool SupportsSerialization(ServiceHandlerContext holder)
{
return(Serializer != null &&
(FnCanSerialize?.Invoke(holder) ?? true) &&
base.SupportsSerialization(holder));
}
/// <summary>
/// Returns true if the Content in the holder can be serialized.
/// </summary>
/// <param name="holder">The holder.</param>
/// <returns>
/// Returns true if it can be serialized.
/// </returns>
public override bool SupportsSerialization(ServiceHandlerContext holder)
{
return(base.SupportsSerialization(holder) && holder.ObjectType == typeof(Microservice.Statistics));
}
