public Task <CommandMessage> Send(CommandMessage commandMessage)
{
Header authorizationContextHeader = commandMessage.HeaderCollection.GetHeader(CommandMessageHeaderNames.AuthorizationContext);
Header routingKeyHeader = commandMessage.HeaderCollection.GetHeader(CommandMessageHeaderNames.RoutingKey);
AuthorizationToken authorizationToken = _serializationService.DeserializeFromString <AuthorizationToken>(authorizationContextHeader.Value);
bool isAuthorized = authorizationToken.Permissions.Any(p =>
p.RoutingKey == routingKeyHeader.Value &&
p.CommandName == commandMessage.CommandMessageBody.CommandName
);
commandMessage.HeaderCollection.AddHeader(new Header(CommandMessageHeaderNames.IsAuthorized, isAuthorized.ToString()));
if (!isAuthorized)
{
throw new Exception($"User {authorizationToken.User.Username} is not authorized to execute {commandMessage.CommandMessageBody.CommandName} on {routingKeyHeader.Value}.");
}
return(Task.FromResult(commandMessage));
}
public async Task Send(CommandMessage commandMessage)
{
string correlationId = "";
try {
correlationId = commandMessage.HeaderCollection.GetHeader(CommandMessageHeaderNames.CorrelationId).Value;
} catch {
correlationId = Guid.NewGuid().ToString();
}
JsonRpcRequest jsonRpcRequest = new JsonRpcRequest()
{
id = 1,
jsonrpc = "2.0",
method = "ExecuteWithCorrelationAndHeaders",
Params = new JsonRpcGatewayExecuteParams()
{
routingKey = commandMessage.HeaderCollection.GetHeader(CommandMessageHeaderNames.RoutingKey).Value,
command = new JsonRpcGatewayCommand()
{
name = commandMessage.CommandMessageBody.CommandName,
data = commandMessage.CommandMessageBody.Command
},
authorizationToken = commandMessage.HeaderCollection.GetHeader(CommandMessageHeaderNames.AuthorizationToken).Value,
correlationId = correlationId,
headers = commandMessage.HeaderCollection.ToDictionary(h => h.Name, h => h.Value)
}
};
using (HttpClient httpClient = new HttpClient()) {
HttpResponseMessage httpResponse = await httpClient.PostAsync(
_configuration.GatewayUrl + "/api/rpc.json",
new StringContent(_serializationService.SerializeToString(jsonRpcRequest), Encoding.UTF8, "application/json")
);
httpResponse.EnsureSuccessStatusCode();
JsonRpcResponse jsonRpcResponse = _serializationService.DeserializeFromString <JsonRpcResponse>(
await httpResponse.Content.ReadAsStringAsync()
);
if (jsonRpcResponse.error != null)
{
throw new Exception($"JSON RPC Error {jsonRpcResponse.error.code}: {jsonRpcResponse.error.message}");
}
}
}
