feat: lotus-lite - replace wallet StateManager with thin client to gateway

api/api_gateway.go

@@ -0,0 +1,17 @@
+package api
+
+import (
+	"context"
+
+	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/ipfs/go-cid"
+)
+
+type GatewayAPI interface {
+	StateGetActor(ctx context.Context, actor address.Address, ts types.TipSetKey) (*types.Actor, error)
+	ChainHead(ctx context.Context) (*types.TipSet, error)
+	ChainGetTipSet(ctx context.Context, tsk types.TipSetKey) (*types.TipSet, error)
+	MpoolPush(ctx context.Context, sm *types.SignedMessage) (cid.Cid, error)
+	StateAccountKey(ctx context.Context, addr address.Address, tsk types.TipSetKey) (address.Address, error)
+}

api/apistruct/struct.go

@@ -361,6 +361,17 @@ type WorkerStruct struct {
 	}
 }
 
+type GatewayStruct struct {
+	Internal struct {
+		// TODO: does the gateway need perms?
+		StateGetActor   func(ctx context.Context, actor address.Address, ts types.TipSetKey) (*types.Actor, error)
+		ChainHead       func(ctx context.Context) (*types.TipSet, error)
+		ChainGetTipSet  func(ctx context.Context, tsk types.TipSetKey) (*types.TipSet, error)
+		MpoolPush       func(ctx context.Context, sm *types.SignedMessage) (cid.Cid, error)
+		StateAccountKey func(ctx context.Context, addr address.Address, tsk types.TipSetKey) (address.Address, error)
+	}
+}
+
 // CommonStruct
 
 func (c *CommonStruct) AuthVerify(ctx context.Context, token string) ([]auth.Permission, error) {
@@ -1372,7 +1383,28 @@ func (w *WorkerStruct) Closing(ctx context.Context) (<-chan struct{}, error) {
 	return w.Internal.Closing(ctx)
 }
 
+func (g GatewayStruct) StateGetActor(ctx context.Context, actor address.Address, ts types.TipSetKey) (*types.Actor, error) {
+	return g.Internal.StateGetActor(ctx, actor, ts)
+}
+
+func (g GatewayStruct) ChainHead(ctx context.Context) (*types.TipSet, error) {
+	return g.Internal.ChainHead(ctx)
+}
+
+func (g GatewayStruct) ChainGetTipSet(ctx context.Context, tsk types.TipSetKey) (*types.TipSet, error) {
+	return g.Internal.ChainGetTipSet(ctx, tsk)
+}
+
+func (g GatewayStruct) MpoolPush(ctx context.Context, sm *types.SignedMessage) (cid.Cid, error) {
+	return g.Internal.MpoolPush(ctx, sm)
+}
+
+func (g GatewayStruct) StateAccountKey(ctx context.Context, addr address.Address, tsk types.TipSetKey) (address.Address, error) {
+	return g.Internal.StateAccountKey(ctx, addr, tsk)
+}
+
 var _ api.Common = &CommonStruct{}
 var _ api.FullNode = &FullNodeStruct{}
 var _ api.StorageMiner = &StorageMinerStruct{}
 var _ api.WorkerAPI = &WorkerStruct{}
+var _ api.GatewayAPI = &GatewayStruct{}

api/client/client.go

@@ -82,3 +82,17 @@ func NewWorkerRPC(ctx context.Context, addr string, requestHeader http.Header) (
 
 	return &res, closer, err
 }
+
+// NewGatewayRPC creates a new http jsonrpc client for a gateway node.
+func NewGatewayRPC(ctx context.Context, addr string, requestHeader http.Header, opts ...jsonrpc.Option) (api.GatewayAPI, jsonrpc.ClientCloser, error) {
+	var res apistruct.GatewayStruct
+	closer, err := jsonrpc.NewMergeClient(ctx, addr, "Filecoin",
+		[]interface{}{
+			&res.Internal,
+		},
+		requestHeader,
+		opts...,
+	)
+
+	return &res, closer, err
+}