forked from TrueCloudLab/frostfs-node
98 lines
2.3 KiB
Go
98 lines
2.3 KiB
Go
package neofscontract
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import (
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"github.com/nspcc-dev/neofs-node/pkg/morph/client"
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)
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// Client is a wrapper over StaticClient
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// which makes calls with the names and arguments
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// of the NeoFS contract.
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//
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// Working client must be created via constructor New.
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// Using the Client that has been created with new(Client)
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// expression (or just declaring a Client variable) is unsafe
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// and can lead to panic.
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type Client struct {
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client *client.StaticClient // static NeoFS contract client
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*cfg // contract method names
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}
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// Option is a client configuration change function.
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type Option func(*cfg)
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type cfg struct {
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alphabetUpdateMethod,
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chequeMethod,
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bindKeysMethod,
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unbindKeysMethod string
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}
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func defaultConfig() *cfg {
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const (
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defaultBindKeysMethod = "bind"
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defaultUnbindKeysMethod = "unbind"
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defaultAlphabetUpdateMethod = "alphabetUpdate"
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defaultChequeMethod = "cheque"
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)
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return &cfg{
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alphabetUpdateMethod: defaultAlphabetUpdateMethod,
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chequeMethod: defaultChequeMethod,
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bindKeysMethod: defaultBindKeysMethod,
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unbindKeysMethod: defaultUnbindKeysMethod,
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}
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}
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// New creates, initializes and returns the Client instance.
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//
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// If StaticClient is nil, panic occurs.
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//
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// Other values are set according to provided options, or by default:
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// * key binding method name: bind;
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// * key unbinding method name: unbind;
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//
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// If desired option satisfies the default value, it can be omitted.
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// If multiple options of the same config value are supplied,
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// the option with the highest index in the arguments will be used.
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func New(c *client.StaticClient, opts ...Option) *Client {
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if c == nil {
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panic("static client is nil")
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}
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res := &Client{
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client: c,
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cfg: defaultConfig(), // build default configuration
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}
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// apply options
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for _, opt := range opts {
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opt(res.cfg)
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}
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return res
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}
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// WithBindKeysMethod returns a client constructor option that
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// specifies the method name of key binding operation.
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//
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// Ignores empty value.
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func WithBindKeysMethod(n string) Option {
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return func(c *cfg) {
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if n != "" {
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c.bindKeysMethod = n
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}
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}
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}
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// WithUnbindKeysMethod returns a client constructor option that
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// specifies the method name of key unbinding operation.
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//
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// Ignores empty value.
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func WithUnbindKeysMethod(n string) Option {
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return func(c *cfg) {
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if n != "" {
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c.unbindKeysMethod = n
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}
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}
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}
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