68b469a79d
Implement NeoFS ID contact's client which is responsible for collecting call arguments and parsing stack items. Initially only key listing method is supported. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
78 lines
1.8 KiB
Go
78 lines
1.8 KiB
Go
package neofsid
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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 ID 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 ID 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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keyListingMethod string
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}
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const (
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defaultKeyListingMethod = "key" // default key listing method name
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)
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func defaultConfig() *cfg {
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return &cfg{
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keyListingMethod: defaultKeyListingMethod,
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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 listing method name: key.
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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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// WithKeyListingMethod returns a client constructor option that
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// specifies the method name of key listing operation.
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//
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// Ignores empty value.
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//
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// If option not provided, "key" is used.
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func WithKeyListingMethod(n string) Option {
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return func(c *cfg) {
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if n != "" {
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c.keyListingMethod = n
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}
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}
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}
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