DI and Creating Connection

[TechyChap]

Any suggestions about how to go about using .Net Core DI to create the AmazonConnection ?

Am thinking a connection factory approach so I can connect to different marketplaces.

[abuzuhri]

I'm not sour what the best for you but for peoples have multi marketplaces we have RefNumber can filled and later get object by this number

AmazonConnection amazonConnection = new AmazonConnection(new AmazonCredential()
            {
                .
                .
            },
            RefNumber:"ABCD...."
            );

[TechyChap]

A related question. Should the connection be short lived or long/singleton?

[abuzuhri]

Connection should be for long time if you going to use api in heavy use , all information about rate limit need the connection to be live to do the true calculations for next request , and save access token with expired time .

If you lite use then no need keep it for long time

[TechyChap]

Great. That's enough for me to work with. Thanks

[rcalv002]

Great. That's enough for me to work with. Thanks

Hey @TechyChap ,

Were you able to get this working reliably as a singleton?

[TechyChap]

Not seen any issues yet. we are using .Net Core and the connection is currently defined as:

services.AddSingleton(c => new AmazonConnection(new AmazonCredential()
{
AccessKey = settings.AccessKey,
SecretKey = settings.SecretKey,
RoleArn = settings.RoleArn,
ClientId = settings.ClientId,
ClientSecret = settings.ClientSecret,
RefreshToken = settings.RefreshToken,
MarketPlace = MarketPlace.UnitedKingdom,
Environment = settings.UseSandbox ? Constants.Environments.Sandbox : Constants.Environments.Production
}));

We've not implemented the multiple marketplaces logic yet.

[TechyChap]

We ended up with a simple wrapper around the SP-API to allow unit testing without the needing to mock out the whole connection.

public class AmazonListingService : IAmazonListingService
    {
        private readonly AmazonConnection _connection;

        public AmazonListingService(AmazonConnection connection)
        {
            _connection = connection;
        }

        public async Task<ListingsItemSubmissionResponse> PutListingsItemAsync(ParameterPutListingItem listing)
        {
            return await _connection.ListingsItem.PutListingsItemAsync(listing);
        }
    }