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);
}