package wrapper import ( "errors" "fmt" "github.com/nspcc-dev/neo-go/pkg/encoding/fixedn" "github.com/nspcc-dev/neo-go/pkg/util" "github.com/nspcc-dev/neofs-node/pkg/morph/client" "github.com/nspcc-dev/neofs-node/pkg/morph/client/netmap" ) // Client represents the Netmap contract client. // // It is a type alias of // github.com/nspcc-dev/neofs-node/pkg/morph/client/netmap.Client. type Client = netmap.Client // Wrapper is a wrapper over netmap contract // client which implements: // * network map storage; // * tool for peer state updating. // // Working wrapper must be created via constructor New. // Using the Wrapper that has been created with new(Wrapper) // expression (or just declaring a Wrapper variable) is unsafe // and can lead to panic. type Wrapper struct { client *Client } // ErrNilWrapper is returned by functions that expect // a non-nil Wrapper pointer, but received nil. var ErrNilWrapper = errors.New("netmap contract client wrapper is nil") // New creates, initializes and returns the Wrapper instance. // // If Client is nil, netmap.ErrNilClient is returned. func New(c *Client) (*Wrapper, error) { if c == nil { return nil, netmap.ErrNilClient } return &Wrapper{ client: c, }, nil } // NewFromMorph returns the wrapper instance from the raw morph client. func NewFromMorph(cli *client.Client, contract util.Uint160, fee fixedn.Fixed8) (*Wrapper, error) { staticClient, err := client.NewStatic(cli, contract, fee) if err != nil { return nil, fmt.Errorf("can't create netmap static client: %w", err) } enhancedNetmapClient, err := netmap.New(staticClient) if err != nil { return nil, fmt.Errorf("can't create netmap morph client: %w", err) } return New(enhancedNetmapClient) }