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116 lines
3.5 KiB
Go
116 lines
3.5 KiB
Go
package client
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// Various non-policy things from native contracts.
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import (
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"errors"
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"fmt"
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nns "github.com/nspcc-dev/neo-go/examples/nft-nd-nns"
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"github.com/nspcc-dev/neo-go/pkg/core/native/nativenames"
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"github.com/nspcc-dev/neo-go/pkg/core/native/noderoles"
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"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract"
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"github.com/nspcc-dev/neo-go/pkg/util"
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)
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// GetOraclePrice invokes `getPrice` method on a native Oracle contract.
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func (c *Client) GetOraclePrice() (int64, error) {
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oracleHash, err := c.GetNativeContractHash(nativenames.Notary)
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if err != nil {
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return 0, fmt.Errorf("failed to get native Oracle hash: %w", err)
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}
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return c.invokeNativeGetMethod(oracleHash, "getPrice")
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}
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// GetNNSPrice invokes `getPrice` method on a NeoNameService contract with the specified hash.
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func (c *Client) GetNNSPrice(nnsHash util.Uint160) (int64, error) {
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return c.invokeNativeGetMethod(nnsHash, "getPrice")
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}
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// GetGasPerBlock invokes `getGasPerBlock` method on a native NEO contract.
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func (c *Client) GetGasPerBlock() (int64, error) {
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return c.getFromNEO("getGasPerBlock")
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}
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// GetCandidateRegisterPrice invokes `getRegisterPrice` method on native NEO contract.
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func (c *Client) GetCandidateRegisterPrice() (int64, error) {
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return c.getFromNEO("getRegisterPrice")
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}
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func (c *Client) getFromNEO(meth string) (int64, error) {
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neoHash, err := c.GetNativeContractHash(nativenames.Neo)
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if err != nil {
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return 0, fmt.Errorf("failed to get native NEO hash: %w", err)
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}
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return c.invokeNativeGetMethod(neoHash, meth)
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}
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// GetDesignatedByRole invokes `getDesignatedByRole` method on a native RoleManagement contract.
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func (c *Client) GetDesignatedByRole(role noderoles.Role, index uint32) (keys.PublicKeys, error) {
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rmHash, err := c.GetNativeContractHash(nativenames.Designation)
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if err != nil {
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return nil, fmt.Errorf("failed to get native RoleManagement hash: %w", err)
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}
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result, err := c.InvokeFunction(rmHash, "getDesignatedByRole", []smartcontract.Parameter{
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{
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Type: smartcontract.IntegerType,
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Value: int64(role),
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},
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{
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Type: smartcontract.IntegerType,
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Value: int64(index),
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},
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}, nil)
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if err != nil {
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return nil, err
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}
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err = getInvocationError(result)
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if err != nil {
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return nil, fmt.Errorf("`getDesignatedByRole`: %w", err)
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}
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return topPublicKeysFromStack(result.Stack)
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}
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// NNSResolve invokes `resolve` method on a NameService contract with the specified hash.
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func (c *Client) NNSResolve(nnsHash util.Uint160, name string, typ nns.RecordType) (string, error) {
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if typ == nns.CNAME {
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return "", errors.New("can't resolve CNAME record type")
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}
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result, err := c.InvokeFunction(nnsHash, "resolve", []smartcontract.Parameter{
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{
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Type: smartcontract.StringType,
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Value: name,
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},
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{
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Type: smartcontract.IntegerType,
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Value: int64(typ),
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},
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}, nil)
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if err != nil {
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return "", err
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}
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err = getInvocationError(result)
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if err != nil {
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return "", fmt.Errorf("`resolve`: %w", err)
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}
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return topStringFromStack(result.Stack)
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}
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// NNSIsAvailable invokes `isAvailable` method on a NeoNameService contract with the specified hash.
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func (c *Client) NNSIsAvailable(nnsHash util.Uint160, name string) (bool, error) {
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result, err := c.InvokeFunction(nnsHash, "isAvailable", []smartcontract.Parameter{
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{
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Type: smartcontract.StringType,
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Value: name,
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},
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}, nil)
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if err != nil {
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return false, err
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}
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err = getInvocationError(result)
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if err != nil {
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return false, fmt.Errorf("`isAvailable`: %w", err)
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}
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return topBoolFromStack(result.Stack)
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}
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