public static void AddCosmosContext <TContext>(this IServiceCollection services) where TContext : CosmosContext, new()
{
services.AddTransient(typeof(TContext), provider =>
{
var cosmosDbClient = provider.GetRequiredService <ICosmosDbClient>();
var cosmosContext = new TContext();
Type cosmosContextType = typeof(TContext);
// concrete repository type to instantiate against the IRepository<> interface
Type repoType = typeof(CosmosDbContainerRepository <>);
IEnumerable <PropertyInfo> contextRepositories = cosmosContextType.GetProperties()
.Where(prop =>
prop.PropertyType.IsInterface &&
prop.PropertyType.IsGenericType &&
prop.PropertyType.GetGenericTypeDefinition() == typeof(IRepository <>));
foreach (PropertyInfo prop in contextRepositories)
{
Type repositoryEntityGenericType = prop.PropertyType.GetGenericArguments()[0];
Type constructedRepoType = repoType.MakeGenericType(repositoryEntityGenericType);
// TODO: how can we allow multiple repos of the same type but with different names and pk paths?
// We somehow have to search via ContainerDefs or... rework the whole config story...and have a Config() method on the CosmosContext that
// we use to configure each repository individually...
ContainerDefinition containerDefinition = cosmosDbClient.GetContainerDefinitionForType(prop.PropertyType.GetGenericArguments()[0]);
ICosmosDbContainer container = cosmosDbClient.CreateContainer(containerDefinition).ConfigureAwait(false).GetAwaiter().GetResult();
var entityTypeNameResolverInstance = new CosmosDbEntityTypeNameResolver();
var pkvResolver = new CosmosDbPartitionKeyResolver();
var idValueGeneratorType = typeof(CosmosDbIdValueGenerator <>);
var idValueGeneratorInstanceType = idValueGeneratorType.MakeGenericType(repositoryEntityGenericType);
var idValueGeneratorInstance = Activator.CreateInstance(idValueGeneratorInstanceType);
object repoInstance = Activator.CreateInstance(constructedRepoType, args: new object[] { container, entityTypeNameResolverInstance, idValueGeneratorInstance, pkvResolver });
prop.SetValue(cosmosContext, repoInstance);
}
return(cosmosContext);
});
}
public static void AddCosmosDbContext <TContext>(this IServiceCollection services) where TContext : DbContext, new()
{
services.AddTransient(typeof(TContext), provider =>
{
var cosmosDbClient = provider.GetRequiredService <ICosmosDbClient>();
var instance = new TContext();
Type instanceType = typeof(TContext);
// concrete repository type to instantiate against the IRepository<> interface
Type repoType = typeof(CosmosDbContainerRepository <>);
IEnumerable <PropertyInfo> contextRepositories = instanceType.GetProperties()
.Where(prop =>
prop.PropertyType.IsInterface &&
prop.PropertyType.IsGenericType &&
prop.PropertyType.GetGenericTypeDefinition() == typeof(IRepository <>));
var containerFactory = provider.GetRequiredService <ICosmosDbContainerFactory>();
foreach (PropertyInfo prop in contextRepositories)
{
Type repositoryEntityGenericType = prop.PropertyType.GetGenericArguments()[0];
Type constructedRepoType = repoType.MakeGenericType(repositoryEntityGenericType);
ContainerDefinition containerDefinition = cosmosDbClient.GetContainerDefinitionForType(prop.PropertyType.GetGenericArguments()[0]);
ICosmosDbContainer container = containerFactory.Create(instanceType, containerDefinition, cosmosDbClient);
var entityTypeNameResolverInstance = new CosmosDbEntityTypeNameResolver();
var pkvResolver = new CosmosDbPartitionKeyResolver();
var idValueGeneratorType = typeof(CosmosDbIdValueGenerator <>);
var idValueGeneratorInstanceType = idValueGeneratorType.MakeGenericType(repositoryEntityGenericType);
var idValueGeneratorInstance = Activator.CreateInstance(idValueGeneratorInstanceType);
object repoInstance = Activator.CreateInstance(constructedRepoType, args: new object[] { container, entityTypeNameResolverInstance, idValueGeneratorInstance, pkvResolver });
prop.SetValue(instance, repoInstance);
}
return(instance);
});
}
