5d5455312a
And test it with the RPC server. Notice that getters still return int64 instead of *big.Int, that's because these values are very limited and technically could even fit into an int (but that seems to be too dangerous to use for long-term compatibility).
219 lines
9.6 KiB
Go
219 lines
9.6 KiB
Go
/*
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Package policy allows to work with the native PolicyContract contract via RPC.
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Safe methods are encapsulated into ContractReader structure while Contract provides
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various methods to perform PolicyContract state-changing calls.
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*/
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package policy
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import (
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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/state"
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"github.com/nspcc-dev/neo-go/pkg/core/transaction"
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"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
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"github.com/nspcc-dev/neo-go/pkg/rpcclient/unwrap"
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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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// Invoker is used by ContractReader to call various methods.
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type Invoker interface {
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Call(contract util.Uint160, operation string, params ...interface{}) (*result.Invoke, error)
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}
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// Actor is used by Contract to create and send transactions.
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type Actor interface {
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Invoker
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MakeCall(contract util.Uint160, method string, params ...interface{}) (*transaction.Transaction, error)
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MakeRun(script []byte) (*transaction.Transaction, error)
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MakeUnsignedCall(contract util.Uint160, method string, attrs []transaction.Attribute, params ...interface{}) (*transaction.Transaction, error)
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MakeUnsignedRun(script []byte, attrs []transaction.Attribute) (*transaction.Transaction, error)
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SendCall(contract util.Uint160, method string, params ...interface{}) (util.Uint256, uint32, error)
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SendRun(script []byte) (util.Uint256, uint32, error)
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}
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// Hash stores the hash of the native PolicyContract contract.
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var Hash = state.CreateNativeContractHash(nativenames.Policy)
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const (
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execFeeSetter = "setExecFeeFactor"
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feePerByteSetter = "setFeePerByte"
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storagePriceSetter = "setStoragePrice"
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)
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// ContractReader provides an interface to call read-only PolicyContract
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// contract's methods.
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type ContractReader struct {
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invoker Invoker
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}
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// Contract represents a PolicyContract contract client that can be used to
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// invoke all of its methods.
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type Contract struct {
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ContractReader
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actor Actor
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}
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// NewReader creates an instance of ContractReader that can be used to read
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// data from the contract.
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func NewReader(invoker Invoker) *ContractReader {
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return &ContractReader{invoker}
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}
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// New creates an instance of Contract to perform actions using
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// the given Actor. Notice that PolicyContract's state can be changed
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// only by the network's committee, so the Actor provided must be a committee
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// actor for all methods to work properly.
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func New(actor Actor) *Contract {
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return &Contract{*NewReader(actor), actor}
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}
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// GetExecFeeFactor returns current execution fee factor used by the network.
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// This setting affects all executions of all transactions.
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func (c *ContractReader) GetExecFeeFactor() (int64, error) {
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return unwrap.Int64(c.invoker.Call(Hash, "getExecFeeFactor"))
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}
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// GetFeePerByte returns current minimal per-byte network fee value which
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// affects all transactions on the network.
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func (c *ContractReader) GetFeePerByte() (int64, error) {
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return unwrap.Int64(c.invoker.Call(Hash, "getFeePerByte"))
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}
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// GetStoragePrice returns current per-byte storage price. Any contract saving
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// data to the storage pays for it according to this value.
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func (c *ContractReader) GetStoragePrice() (int64, error) {
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return unwrap.Int64(c.invoker.Call(Hash, "getStoragePrice"))
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}
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// IsBlocked checks if the given account is blocked in the PolicyContract.
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func (c *ContractReader) IsBlocked(account util.Uint160) (bool, error) {
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return unwrap.Bool(c.invoker.Call(Hash, "isBlocked", account))
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}
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// SetExecFeeFactor creates and sends a transaction that sets the new
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// execution fee factor for the network to use. The action is successful when
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// transaction ends in HALT state. The returned values are transaction hash, its
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// ValidUntilBlock value and an error if any.
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func (c *Contract) SetExecFeeFactor(value int64) (util.Uint256, uint32, error) {
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return c.actor.SendCall(Hash, execFeeSetter, value)
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}
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// SetExecFeeFactorTransaction creates a transaction that sets the new execution
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// fee factor. This transaction is signed, but not sent to the network,
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// instead it's returned to the caller.
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func (c *Contract) SetExecFeeFactorTransaction(value int64) (*transaction.Transaction, error) {
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return c.actor.MakeCall(Hash, execFeeSetter, value)
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}
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// SetExecFeeFactorUnsigned creates a transaction that sets the new execution
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// fee factor. This transaction is not signed and just returned to the caller.
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func (c *Contract) SetExecFeeFactorUnsigned(value int64) (*transaction.Transaction, error) {
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return c.actor.MakeUnsignedCall(Hash, execFeeSetter, nil, value)
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}
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// SetFeePerByte creates and sends a transaction that sets the new minimal
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// per-byte network fee value. The action is successful when transaction ends in
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// HALT state. The returned values are transaction hash, its ValidUntilBlock
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// value and an error if any.
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func (c *Contract) SetFeePerByte(value int64) (util.Uint256, uint32, error) {
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return c.actor.SendCall(Hash, feePerByteSetter, value)
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}
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// SetFeePerByteTransaction creates a transaction that sets the new minimal
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// per-byte network fee value. This transaction is signed, but not sent to the
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// network, instead it's returned to the caller.
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func (c *Contract) SetFeePerByteTransaction(value int64) (*transaction.Transaction, error) {
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return c.actor.MakeCall(Hash, feePerByteSetter, value)
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}
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// SetFeePerByteUnsigned creates a transaction that sets the new minimal per-byte
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// network fee value. This transaction is not signed and just returned to the
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// caller.
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func (c *Contract) SetFeePerByteUnsigned(value int64) (*transaction.Transaction, error) {
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return c.actor.MakeUnsignedCall(Hash, feePerByteSetter, nil, value)
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}
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// SetStoragePrice creates and sends a transaction that sets the storage price
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// for contracts. The action is successful when transaction ends in HALT
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// state. The returned values are transaction hash, its ValidUntilBlock value
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// and an error if any.
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func (c *Contract) SetStoragePrice(value int64) (util.Uint256, uint32, error) {
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return c.actor.SendCall(Hash, storagePriceSetter, value)
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}
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// SetStoragePriceTransaction creates a transaction that sets the storage price
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// for contracts. This transaction is signed, but not sent to the network,
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// instead it's returned to the caller.
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func (c *Contract) SetStoragePriceTransaction(value int64) (*transaction.Transaction, error) {
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return c.actor.MakeCall(Hash, storagePriceSetter, value)
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}
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// SetStoragePriceUnsigned creates a transaction that sets the storage price
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// for contracts. This transaction is not signed and just returned to the
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// caller.
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func (c *Contract) SetStoragePriceUnsigned(value int64) (*transaction.Transaction, error) {
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return c.actor.MakeUnsignedCall(Hash, storagePriceSetter, nil, value)
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}
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// BlockAccount creates and sends a transaction that blocks an account on the
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// network (via `blockAccount` method), it fails (with FAULT state) if it's not
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// successful. The returned values are transaction hash, its
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// ValidUntilBlock value and an error if any.
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func (c *Contract) BlockAccount(account util.Uint160) (util.Uint256, uint32, error) {
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return c.actor.SendRun(blockScript(account))
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}
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// BlockAccountTransaction creates a transaction that blocks an account on the
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// network and checks for the result of the appropriate call, failing the
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// transaction if it's not true. This transaction is signed, but not sent to the
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// network, instead it's returned to the caller.
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func (c *Contract) BlockAccountTransaction(account util.Uint160) (*transaction.Transaction, error) {
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return c.actor.MakeRun(blockScript(account))
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}
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// BlockAccountUnsigned creates a transaction that blocks an account on the
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// network and checks for the result of the appropriate call, failing the
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// transaction if it's not true. This transaction is not signed and just returned
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// to the caller.
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func (c *Contract) BlockAccountUnsigned(account util.Uint160) (*transaction.Transaction, error) {
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return c.actor.MakeUnsignedRun(blockScript(account), nil)
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}
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func blockScript(account util.Uint160) []byte {
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// We know parameters exactly (unlike with nep17.Transfer), so this can't fail.
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script, _ := smartcontract.CreateCallWithAssertScript(Hash, "blockAccount", account)
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return script
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}
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// UnblockAccount creates and sends a transaction that removes previously blocked
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// account from the stop list. It uses `unblockAccount` method and checks for the
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// result returned, failing the transaction if it's not true. The returned values
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// are transaction hash, its ValidUntilBlock value and an error if any.
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func (c *Contract) UnblockAccount(account util.Uint160) (util.Uint256, uint32, error) {
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return c.actor.SendRun(unblockScript(account))
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}
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// UnblockAccountTransaction creates a transaction that unblocks previously
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// blocked account via `unblockAccount` method and checks for the result returned,
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// failing the transaction if it's not true. This transaction is signed, but not
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// sent to the network, instead it's returned to the caller.
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func (c *Contract) UnblockAccountTransaction(account util.Uint160) (*transaction.Transaction, error) {
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return c.actor.MakeRun(unblockScript(account))
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}
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// UnblockAccountUnsigned creates a transaction that unblocks the given account
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// if it was blocked previously. It uses `unblockAccount` method and checks for
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// its return value, failing the transaction if it's not true. This transaction
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// is not signed and just returned to the caller.
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func (c *Contract) UnblockAccountUnsigned(account util.Uint160) (*transaction.Transaction, error) {
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return c.actor.MakeUnsignedRun(unblockScript(account), nil)
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}
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func unblockScript(account util.Uint160) []byte {
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// We know parameters exactly (unlike with nep17.Transfer), so this can't fail.
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script, _ := smartcontract.CreateCallWithAssertScript(Hash, "unblockAccount", account)
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return script
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}
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