lotus/cli/services.go

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package cli
import (
"bytes"
"context"
"encoding/json"
"fmt"
"reflect"
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cid "github.com/ipfs/go-cid"
cbg "github.com/whyrusleeping/cbor-gen"
"golang.org/x/xerrors"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/go-jsonrpc"
"github.com/filecoin-project/go-state-types/abi"
"github.com/filecoin-project/go-state-types/big"
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"github.com/filecoin-project/lotus/api"
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"github.com/filecoin-project/lotus/chain/consensus/filcns"
types "github.com/filecoin-project/lotus/chain/types"
)
//go:generate go run github.com/golang/mock/mockgen -destination=servicesmock_test.go -package=cli -self_package github.com/filecoin-project/lotus/cli . ServicesAPI
type ServicesAPI interface {
FullNodeAPI() api.FullNode
GetBaseFee(ctx context.Context) (abi.TokenAmount, error)
// MessageForSend creates a prototype of a message based on SendParams
MessageForSend(ctx context.Context, params SendParams) (*api.MessagePrototype, error)
// DecodeTypedParamsFromJSON takes in information needed to identify a method and converts JSON
// parameters to bytes of their CBOR encoding
DecodeTypedParamsFromJSON(ctx context.Context, to address.Address, method abi.MethodNum, paramstr string) ([]byte, error)
RunChecksForPrototype(ctx context.Context, prototype *api.MessagePrototype) ([][]api.MessageCheckStatus, error)
// PublishMessage takes in a message prototype and publishes it
// before publishing the message, it runs checks on the node, message and mpool to verify that
// message is valid and won't be stuck.
// if `force` is true, it skips the checks
PublishMessage(ctx context.Context, prototype *api.MessagePrototype, force bool) (*types.SignedMessage, [][]api.MessageCheckStatus, error)
LocalAddresses(ctx context.Context) (address.Address, []address.Address, error)
MpoolPendingFilter(ctx context.Context, filter func(*types.SignedMessage) bool, tsk types.TipSetKey) ([]*types.SignedMessage, error)
MpoolCheckPendingMessages(ctx context.Context, a address.Address) ([][]api.MessageCheckStatus, error)
// Close ends the session of services and disconnects from RPC, using Services after Close is called
// most likely will result in an error
// Should not be called concurrently
Close() error
}
type ServicesImpl struct {
api api.FullNode
closer jsonrpc.ClientCloser
}
func (s *ServicesImpl) FullNodeAPI() api.FullNode {
return s.api
}
func (s *ServicesImpl) Close() error {
if s.closer == nil {
return xerrors.Errorf("Services already closed")
}
s.closer()
s.closer = nil
return nil
}
func (s *ServicesImpl) GetBaseFee(ctx context.Context) (abi.TokenAmount, error) {
// not used but useful
ts, err := s.api.ChainHead(ctx)
if err != nil {
return big.Zero(), xerrors.Errorf("getting head: %w", err)
}
return ts.MinTicketBlock().ParentBaseFee, nil
}
func (s *ServicesImpl) DecodeTypedParamsFromJSON(ctx context.Context, to address.Address, method abi.MethodNum, paramstr string) ([]byte, error) {
act, err := s.api.StateGetActor(ctx, to, types.EmptyTSK)
if err != nil {
return nil, err
}
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methodMeta, found := filcns.NewActorRegistry().Methods[act.Code][method] // TODO: use remote map
if !found {
return nil, fmt.Errorf("method %d not found on actor %s", method, act.Code)
}
p := reflect.New(methodMeta.Params.Elem()).Interface().(cbg.CBORMarshaler)
if err := json.Unmarshal([]byte(paramstr), p); err != nil {
return nil, fmt.Errorf("unmarshaling input into params type: %w", err)
}
buf := new(bytes.Buffer)
if err := p.MarshalCBOR(buf); err != nil {
return nil, err
}
return buf.Bytes(), nil
}
type CheckInfo struct {
MessageTie cid.Cid
CurrentMessageTie bool
Check api.MessageCheckStatus
}
var ErrCheckFailed = fmt.Errorf("check has failed")
func (s *ServicesImpl) RunChecksForPrototype(ctx context.Context, prototype *api.MessagePrototype) ([][]api.MessageCheckStatus, error) {
var outChecks [][]api.MessageCheckStatus
checks, err := s.api.MpoolCheckMessages(ctx, []*api.MessagePrototype{prototype})
if err != nil {
return nil, xerrors.Errorf("message check: %w", err)
}
outChecks = append(outChecks, checks...)
checks, err = s.api.MpoolCheckPendingMessages(ctx, prototype.Message.From)
if err != nil {
return nil, xerrors.Errorf("pending mpool check: %w", err)
}
outChecks = append(outChecks, checks...)
return outChecks, nil
}
// PublishMessage modifies prototype to include gas estimation
// Errors with ErrCheckFailed if any of the checks fail
// First group of checks is related to the message prototype
func (s *ServicesImpl) PublishMessage(ctx context.Context,
prototype *api.MessagePrototype, force bool) (*types.SignedMessage, [][]api.MessageCheckStatus, error) {
gasedMsg, err := s.api.GasEstimateMessageGas(ctx, &prototype.Message, nil, types.EmptyTSK)
if err != nil {
return nil, nil, xerrors.Errorf("estimating gas: %w", err)
}
prototype.Message = *gasedMsg
if !force {
checks, err := s.RunChecksForPrototype(ctx, prototype)
if err != nil {
return nil, nil, xerrors.Errorf("running checks: %w", err)
}
for _, chks := range checks {
for _, c := range chks {
if !c.OK {
return nil, checks, ErrCheckFailed
}
}
}
}
if prototype.ValidNonce {
sm, err := s.api.WalletSignMessage(ctx, prototype.Message.From, &prototype.Message)
if err != nil {
return nil, nil, err
}
_, err = s.api.MpoolPush(ctx, sm)
if err != nil {
return nil, nil, err
}
return sm, nil, nil
}
sm, err := s.api.MpoolPushMessage(ctx, &prototype.Message, nil)
if err != nil {
return nil, nil, err
}
return sm, nil, nil
}
type SendParams struct {
To address.Address
From address.Address
Val abi.TokenAmount
GasPremium *abi.TokenAmount
GasFeeCap *abi.TokenAmount
GasLimit *int64
Nonce *uint64
Method abi.MethodNum
Params []byte
}
func (s *ServicesImpl) MessageForSend(ctx context.Context, params SendParams) (*api.MessagePrototype, error) {
if params.From == address.Undef {
defaddr, err := s.api.WalletDefaultAddress(ctx)
if err != nil {
return nil, err
}
params.From = defaddr
}
msg := types.Message{
From: params.From,
To: params.To,
Value: params.Val,
Method: params.Method,
Params: params.Params,
}
if params.GasPremium != nil {
msg.GasPremium = *params.GasPremium
} else {
msg.GasPremium = types.NewInt(0)
}
if params.GasFeeCap != nil {
msg.GasFeeCap = *params.GasFeeCap
} else {
msg.GasFeeCap = types.NewInt(0)
}
if params.GasLimit != nil {
msg.GasLimit = *params.GasLimit
} else {
msg.GasLimit = 0
}
validNonce := false
if params.Nonce != nil {
msg.Nonce = *params.Nonce
validNonce = true
}
prototype := &api.MessagePrototype{
Message: msg,
ValidNonce: validNonce,
}
return prototype, nil
}
func (s *ServicesImpl) MpoolPendingFilter(ctx context.Context, filter func(*types.SignedMessage) bool,
tsk types.TipSetKey) ([]*types.SignedMessage, error) {
msgs, err := s.api.MpoolPending(ctx, types.EmptyTSK)
if err != nil {
return nil, xerrors.Errorf("getting pending messages: %w", err)
}
out := []*types.SignedMessage{}
for _, sm := range msgs {
if filter(sm) {
out = append(out, sm)
}
}
return out, nil
}
func (s *ServicesImpl) LocalAddresses(ctx context.Context) (address.Address, []address.Address, error) {
def, err := s.api.WalletDefaultAddress(ctx)
if err != nil {
return address.Undef, nil, xerrors.Errorf("getting default addr: %w", err)
}
all, err := s.api.WalletList(ctx)
if err != nil {
return address.Undef, nil, xerrors.Errorf("getting list of addrs: %w", err)
}
return def, all, nil
}
func (s *ServicesImpl) MpoolCheckPendingMessages(ctx context.Context, a address.Address) ([][]api.MessageCheckStatus, error) {
checks, err := s.api.MpoolCheckPendingMessages(ctx, a)
if err != nil {
return nil, xerrors.Errorf("pending mpool check: %w", err)
}
return checks, nil
}