private async ValueTask <IAppConnection> ResolveTargetConnectionAsync(
IProvidedMethodReference methodReference,
IAppConnection source,
IContextLinkageOptions contextLinkageOptions)
{
var method = _registryService.GetProvidedMethod(methodReference);
var launchMode = GetLaunchMode(method);
var appId = methodReference.ProvidedService.ApplicationId;
if (methodReference.ProvidedService.ConnectionId.HasValue)
{
var connectionId = methodReference.ProvidedService.ConnectionId.Value;
if (!_appLifecycleManager.TryGetOnlineConnection(connectionId, out var connection))
{
throw new InvalidOperationException($"The requested app {appId} connection {connectionId} is not online");
}
return(connection);
}
Task <ResolvedConnection> resolveTask;
lock (_resolveConnectionSync)
{
if (launchMode != LaunchMode.MultiInstance)
{
var onlineConnections = _appLifecycleManager
.GetOnlineConnections()
.Where(x => x.Info.ApplicationId.Equals(appId) &&
!x.Id.Equals(source.Id)).ToArray();
if (_contextLinkageManager.IsContextShouldBeConsidered(contextLinkageOptions, source))
{
onlineConnections = _contextLinkageManager
.GetAppsInContexts(contextLinkageOptions, source, true)
.Join(onlineConnections, x => x.ConnectionId.Value, y => y.Id, (x, y) => y)
.ToArray();
}
if (onlineConnections.Any())
{
return(onlineConnections.First());
}
}
if (launchMode == LaunchMode.None || !_appLifecycleManager.CanBeLaunched(appId))
{
throw new InvalidOperationException(
$"The requested app {appId} is not online and cannot be launched");
}
var resolveMode = ConvertToResolveMode(launchMode);
resolveTask = _appLifecycleManager.LaunchAndConnectAsync(appId, resolveMode, source.Info);
}
var resolvedConnection = await resolveTask.ConfigureAwait(false);
return(resolvedConnection.AppConnection);
}
private async ValueTask <IAppConnection> ResolveTargetConnectionAsync(
IProvidedMethodReference methodReference,
IAppConnection source,
ITransportChannel sourceChannel,
IContextLinkageOptions contextLinkageOptions)
{
if (methodReference.ProvidedService.ConnectionId.HasValue)
{
var connectionId = methodReference.ProvidedService.ConnectionId.Value;
if (!_appLifecycleManager.TryGetOnlineConnection(connectionId, out var connection))
{
throw new InvalidOperationException($"The requested connection {connectionId} is not online");
}
return(connection);
}
var appId = methodReference.ProvidedService.ApplicationId;
if (methodReference.ProvidedService.ApplicationInstanceId.HasValue)
{
var appInstanceId = methodReference.ProvidedService.ApplicationInstanceId.Value;
if (appId.HasValue && _appLifecycleManager.TryGetConnectionInProgress(appInstanceId, appId.Value, out var connectionInProgress))
{
return(await connectionInProgress);
}
var connections = _appLifecycleManager.GetAppInstanceConnections(appInstanceId).ToList();
if (connections.Count == 0)
{
throw new InvalidOperationException($"App instance {appInstanceId} is doesn't have online connections");
}
if (appId.HasValue)
{
var connection = connections.FirstOrDefault(c => c.Info.ApplicationId.Equals(appId.Value));
if (connection == null)
{
throw new InvalidOperationException($"App instance {appInstanceId} is doesn't have connection with {appId.Value} application id");
}
return(connection);
}
if (connections.Count == 1)
{
return(connections.Single());
}
throw new InvalidOperationException($"App instance {appInstanceId} has several connections, you need to specify ApplicationId to make call to specific connection");
}
if (!appId.HasValue)
{
throw new InvalidOperationException($"AppId is required to resolve target connection for {methodReference} provided method reference");
}
var appIdValue = appId.Value;
var method = _registryService.GetProvidedMethod(methodReference);
var launchMode = GetLaunchMode(method);
Task <ResolvedConnection> resolveTask;
lock (_resolveConnectionSync)
{
if (launchMode != LaunchMode.MultiInstance)
{
var onlineConnections = _appLifecycleManager
.GetOnlineConnections()
.Where(x => x.Info.ApplicationId.Equals(appIdValue) &&
!x.Id.Equals(source.Id)).ToArray();
if (_contextLinkageManager.IsContextShouldBeConsidered(contextLinkageOptions, source))
{
onlineConnections = _contextLinkageManager
.GetAppsInContexts(contextLinkageOptions, source, true)
.Join(onlineConnections, x => x.ConnectionId.Value, y => y.Id, (x, y) => y)
.ToArray();
}
if (onlineConnections.Any())
{
return(onlineConnections.First());
}
}
if (launchMode == LaunchMode.None || !_appLifecycleManager.CanBeLaunched(appIdValue))
{
throw new InvalidOperationException(
$"The requested app {appIdValue} is not online and cannot be launched");
}
var resolveMode = ConvertToResolveMode(launchMode);
resolveTask = _appLifecycleManager.LaunchAndConnectAsync(appIdValue, resolveMode, source.Info);
}
var resolvedConnection = await resolveTask.ConfigureAwait(false);
return(resolvedConnection.AppConnection);
}
public async Task HandleAsync(
IServiceDiscoveryRequest request,
IAppConnection sourceConnection,
ITransportChannel sourceChannel)
{
IReadOnlyCollection <(IConsumedMethod Consumed, IProvidedMethod Provided)> methodMatches;
if (request.ConsumedService.HasValue)
{
methodMatches = _registryService.GetMethodMatches(
sourceConnection.Info.ApplicationId,
request.ConsumedService.Value);
}
else
{
methodMatches = _registryService.GetMethodMatches(sourceConnection.Info.ApplicationId);
}
IEnumerable <IGrouping <(IConsumedService ConsumedService, IProvidedService ProvidedService, Maybe <UniqueId> ConnectionId, Maybe <UniqueId> ApplicationInstanceId), IProvidedMethod> > groupedMethods;
var online = request.DiscoveryMode == DiscoveryMode.Online;
if (_contextLinkageManager.IsContextShouldBeConsidered(request.ContextLinkageOptions, sourceConnection))
{
groupedMethods = _contextLinkageManager.GetAppsInContexts(request.ContextLinkageOptions, sourceConnection, online)
.Join(methodMatches, x => x.AppId, y => y.Provided.ProvidedService.Service.Id,
(x, y) => (y.Consumed, y.Provided, x.AppInstanceId, x.ConnectionId))
.GroupBy(x => (x.Consumed.ConsumedService, x.Provided.ProvidedService, x.ConnectionId, new Maybe <UniqueId>(x.AppInstanceId)), x => x.Provided);
}
else
{
if (online)
{
var onlineConnections = _appLifecycleManager.GetOnlineConnections();
groupedMethods = methodMatches
.Join(onlineConnections, x => x.Provided.ProvidedService.Application.Id,
y => y.Info.ApplicationId,
(x, y) => (Match: x, ConnectionId: y.Id, y.Info.ApplicationInstanceId))
.GroupBy(
x => (
x.Match.Consumed.ConsumedService,
x.Match.Provided.ProvidedService,
new Maybe <UniqueId>(x.ConnectionId),
new Maybe <UniqueId>(x.ApplicationInstanceId)),
x => x.Match.Provided);
}
else
{
var providerApps = methodMatches.Select(x => x.Provided.ProvidedService.Application.Id).Distinct()
.ToArray();
var availableProviderApps = FilterAvailableApps(providerApps);
groupedMethods = methodMatches
.Join(
availableProviderApps,
x => x.Provided.ProvidedService.Application.Id,
y => y,
(x, y) => x)
.GroupBy(
x => (
x.Consumed.ConsumedService,
x.Provided.ProvidedService,
ConnectionId: Maybe <UniqueId> .Nothing,
ApplicationInstanceId: Maybe <UniqueId> .Nothing),
x => x.Provided);
}
}
var discoveredServices =
from s in groupedMethods
let consumedService = s.Key.ConsumedService
let providedService = s.Key.ProvidedService
let connectionId = s.Key.ConnectionId
let applicationInstanceId = s.Key.ApplicationInstanceId
select _protocol.MessageFactory.CreateDiscoveredService(
_protocol.MessageFactory.CreateConsumedServiceReference(
consumedService.Service.Id,
consumedService.Alias),
_protocol.MessageFactory.CreateProvidedServiceReference(
providedService.Service.Id,
providedService.Alias,
providedService.Application.Id,
connectionId,
applicationInstanceId),
s.Key.ProvidedService.Title,
s.Select(m =>
_protocol.MessageFactory.CreateDiscoveredServiceMethod(
m.Method.Name,
m.Title,
m.Method.InputMessage.Id,
m.Method.OutputMessage.Id,
Convert(m.Method.Type),
m.Options.Select(o => _protocol.MessageFactory.CreateOption(o.Id, o.Value)).ToList()))
.ToList());
using (var response = _protocol.MessageFactory.CreateServiceDiscoveryResponse(discoveredServices.ToList()))
{
Log.Info("Completed service discovery request {{{0}}} from {{{1}}}: {2}", request, sourceConnection, response);
var serializedResponse = _protocol.Serializer.Serialize(response);
try
{
await sourceChannel.Out
.WriteAsync(new TransportMessageFrame(serializedResponse))
.ConfigureAwait(false);
}
catch
{
serializedResponse.Dispose();
throw;
}
}
}