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101 lines
4 KiB
Go
101 lines
4 KiB
Go
/*
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Package rolemgmt allows to work with the native RoleManagement 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 the only RoleManagement state-changing call.
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*/
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package rolemgmt
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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/native/noderoles"
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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/crypto/keys"
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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/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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MakeUnsignedCall(contract util.Uint160, method string, attrs []transaction.Attribute, params ...interface{}) (*transaction.Transaction, error)
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SendCall(contract util.Uint160, method string, params ...interface{}) (util.Uint256, uint32, error)
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}
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// Hash stores the hash of the native RoleManagement contract.
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var Hash = state.CreateNativeContractHash(nativenames.Designation)
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const designateMethod = "designateAsRole"
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// ContractReader provides an interface to call read-only RoleManagement
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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 RoleManagement 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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// DesignationEvent represents an event emitted by RoleManagement contract when
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// a new role designation is done.
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type DesignationEvent struct {
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Role noderoles.Role
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BlockIndex uint32
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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 RoleManagement'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 designation 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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// GetDesignatedByRole returns the list of the keys designated to serve for the
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// given role at the given height. The list can be empty if no keys are
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// configured for this role/height.
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func (c *ContractReader) GetDesignatedByRole(role noderoles.Role, index uint32) (keys.PublicKeys, error) {
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return unwrap.ArrayOfPublicKeys(c.invoker.Call(Hash, "getDesignatedByRole", int64(role), index))
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}
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// DesignateAsRole creates and sends a transaction that sets the keys used for
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// the given node role. 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) DesignateAsRole(role noderoles.Role, pubs keys.PublicKeys) (util.Uint256, uint32, error) {
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return c.actor.SendCall(Hash, designateMethod, int(role), pubs)
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}
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// DesignateAsRoleTransaction creates a transaction that sets the keys for the
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// given node role. 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) DesignateAsRoleTransaction(role noderoles.Role, pubs keys.PublicKeys) (*transaction.Transaction, error) {
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return c.actor.MakeCall(Hash, designateMethod, int(role), pubs)
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}
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// DesignateAsRoleUnsigned creates a transaction that sets the keys for the
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// given node role. This transaction is not signed and just returned to the
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// caller.
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func (c *Contract) DesignateAsRoleUnsigned(role noderoles.Role, pubs keys.PublicKeys) (*transaction.Transaction, error) {
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return c.actor.MakeUnsignedCall(Hash, designateMethod, nil, int(role), pubs)
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}
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