frostfs-node/pkg/morph/client/reputation/client.go
Alex Vanin 9f1a49a562 [] morph/client: Add reputation contract client
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
2021-04-06 10:35:20 +03:00

128 lines
3 KiB
Go

package reputation
import (
"github.com/nspcc-dev/neofs-node/pkg/morph/client"
)
// Client is a wrapper over StaticClient
// which makes calls with the names and arguments
// of the NeoFS reputation contract.
//
// Working client must be created via constructor New.
// Using the Client that has been created with new(Client)
// expression (or just declaring a Client variable) is unsafe
// and can lead to panic.
type Client struct {
client *client.StaticClient // static reputation contract client
*cfg // contract method names
}
// Option is a client configuration change function.
type Option func(*cfg)
type cfg struct {
putMethod,
getMethod,
getByIDMethod,
listByEpochMethod string
}
const (
defaultPutMethod = "put"
defaultGetMethod = "get"
defaultGetByIDMethod = "getByID"
defaultListByEpochMethod = "listByEpoch"
)
func defaultConfig() *cfg {
return &cfg{
putMethod: defaultPutMethod,
getMethod: defaultGetMethod,
getByIDMethod: defaultGetByIDMethod,
listByEpochMethod: defaultListByEpochMethod,
}
}
// New creates, initializes and returns the Client instance.
//
// If StaticClient is nil, client.ErrNilStaticClient is returned.
//
// Other values are set according to provided options, or by default.
//
// If desired option satisfies the default value, it can be omitted.
// If multiple options of the same config value are supplied,
// the option with the highest index in the arguments will be used.
func New(c *client.StaticClient, opts ...Option) (*Client, error) {
if c == nil {
return nil, client.ErrNilStaticClient
}
res := &Client{
client: c,
cfg: defaultConfig(), // build default configuration
}
// apply options
for _, opt := range opts {
opt(res.cfg)
}
return res, nil
}
// WithPutMethod returns a client constructor option that
// specifies the method name to put reputation value.
//
// Ignores empty value.
//
// If option not provided, "put" is used.
func WithPutMethod(n string) Option {
return func(c *cfg) {
if n != "" {
c.putMethod = n
}
}
}
// WithGetMethod returns a client constructor option that
// specifies the method name to get reputation value.
//
// Ignores empty value.
//
// If option not provided, "get" is used.
func WithGetMethod(n string) Option {
return func(c *cfg) {
if n != "" {
c.getMethod = n
}
}
}
// WithGetByIDMethod returns a client constructor option that
// specifies the method name to get reputation value by it's ID in the contract.
//
// Ignores empty value.
//
// If option not provided, "getByID" is used.
func WithGetByIDMethod(n string) Option {
return func(c *cfg) {
if n != "" {
c.getByIDMethod = n
}
}
}
// WithListByEpochMethod returns a client constructor option that
// specifies the method name to list reputation value IDs for certain epoch.
//
// Ignores empty value.
//
// If option not provided, "listByEpoch" is used.
func WithListByEpochDMethod(n string) Option {
return func(c *cfg) {
if n != "" {
c.listByEpochMethod = n
}
}
}