forked from TrueCloudLab/frostfs-node
62 lines
1.7 KiB
Go
62 lines
1.7 KiB
Go
package client
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import (
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"errors"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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)
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// StaticClient is a wrapper over Neo:Morph client
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// that invokes single smart contract methods with fixed fee.
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//
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// Working static client must be created via constructor NewStatic.
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// Using the StaticClient that has been created with new(StaticClient)
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// expression (or just declaring a StaticClient variable) is unsafe
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// and can lead to panic.
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type StaticClient struct {
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client *Client // neo-go client instance
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scScriptHash util.Uint160 // contract script-hash
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fee util.Fixed8 // invocation fee
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}
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// ErrNilStaticClient is returned by functions that expect
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// a non-nil StaticClient pointer, but received nil.
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var ErrNilStaticClient = errors.New("static client is nil")
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// NewStatic creates, initializes and returns the StaticClient instance.
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//
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// If provided Client instance is nil, ErrNilClient is returned.
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func NewStatic(client *Client, scriptHash util.Uint160, fee util.Fixed8) (*StaticClient, error) {
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if client == nil {
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return nil, ErrNilClient
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}
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return &StaticClient{
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client: client,
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scScriptHash: scriptHash,
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fee: fee,
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}, nil
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}
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// Invoke calls Invoke method of Client with static internal script hash and fee.
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// Supported args types are the same as in Client.
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func (s StaticClient) Invoke(method string, args ...interface{}) error {
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return s.client.Invoke(
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s.scScriptHash,
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s.fee,
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method,
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args...,
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)
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}
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// TestInvoke calls TestInvoke method of Client with static internal script hash.
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func (s StaticClient) TestInvoke(method string, args ...interface{}) ([]stackitem.Item, error) {
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return s.client.TestInvoke(
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s.scScriptHash,
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method,
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args...,
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)
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}
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