Code clean up + Beacon Chain Connection

This concludes all the code needed to connect to the DB and beacon node. We will no longer reference the lighthouse client because this application should work interchangeably with any beacon node.

I have also standardized logging.

pkg/database/sql/postgres/config.go

@@ -22,6 +22,7 @@ var DefaultConfig = Config{
 	DatabaseName: "vulcanize_testing",
 	Username:     "vdbm",
 	Password:     "password",
+	Driver:       "PGX",
 }
 
 // ResolveDriverType resolves a DriverType from a provided string

pkg/database/sql/postgres/database.go

@@ -38,7 +38,7 @@ func createDriver(c Config) (*pgxDriver, error) {
 		log.Info("Successfully created a driver for PGX")
 		return driver, nil
 	default:
-		log.Fatal("Couldnt find a driver to create for: ", c.Driver)
+		log.Error("Couldnt find a driver to create for: ", c.Driver)
 		return nil, fmt.Errorf("Can't find a driver to create")
 	}
 

pkg/database/sql/postgres/pgx_test.go

@@ -79,7 +79,9 @@ func TestPostgresPGX(t *testing.T) {
 	})
 
 	t.Run("throws error when can't connect to the database", func(t *testing.T) {
-		_, err := NewPostgresDB(Config{}, "PGX")
+		_, err := NewPostgresDB(Config{
+			Driver: "PGX",
+		})
 		if err == nil {
 			t.Fatal("Expected an error")
 		}
@@ -87,7 +89,7 @@ func TestPostgresPGX(t *testing.T) {
 		expectContainsSubstring(t, err.Error(), sql.DbConnectionFailedMsg)
 	})
 	t.Run("Connect to the database", func(t *testing.T) {
-		driver, err := NewPostgresDB(DefaultConfig, "pgx")
+		driver, err := NewPostgresDB(DefaultConfig)
 		defer driver.Close()
 
 		if err != nil {