begin implementing funcs to support latest go-fil-markest retrieval market API

markets/retrievaladapter/client.go

@@ -8,6 +8,7 @@ import (
 	"github.com/filecoin-project/go-fil-markets/shared"
 	"github.com/filecoin-project/specs-actors/actors/abi"
 	"github.com/filecoin-project/specs-actors/actors/builtin/paych"
+	"github.com/ipfs/go-cid"
 
 	"github.com/filecoin-project/lotus/node/impl/full"
 	payapi "github.com/filecoin-project/lotus/node/impl/paych"
@@ -29,11 +30,10 @@ func NewRetrievalClientNode(pmgr *paychmgr.Manager, payapi payapi.PaychAPI, chai
 // GetOrCreatePaymentChannel sets up a new payment channel if one does not exist
 // between a client and a miner and ensures the client has the given amount of
 // funds available in the channel.
-func (rcn *retrievalClientNode) GetOrCreatePaymentChannel(ctx context.Context, clientAddress address.Address, minerAddress address.Address, clientFundsAvailable abi.TokenAmount, tok shared.TipSetToken) (address.Address, error) {
+func (rcn *retrievalClientNode) GetOrCreatePaymentChannel(ctx context.Context, clientAddress address.Address, minerAddress address.Address, clientFundsAvailable abi.TokenAmount, tok shared.TipSetToken) (address.Address, cid.Cid, error) {
 	// TODO: respect the provided TipSetToken (a serialized TipSetKey) when
 	// querying the chain
-	paych, _, err := rcn.pmgr.GetPaych(ctx, clientAddress, minerAddress, clientFundsAvailable)
-	return paych, err
+	return rcn.pmgr.GetPaych(ctx, clientAddress, minerAddress, clientFundsAvailable)
 }
 
 // Allocate late creates a lane within a payment channel so that calls to
@@ -64,3 +64,12 @@ func (rcn *retrievalClientNode) GetChainHead(ctx context.Context) (shared.TipSet
 
 	return head.Key().Bytes(), head.Height(), nil
 }
+
+func (rcn *retrievalClientNode) WaitForPaymentChannelAddFunds(messageCID cid.Cid) error {
+	panic("implement me")
+}
+
+func (rcn *retrievalClientNode) WaitForPaymentChannelCreation(messageCID cid.Cid) (address.Address, error) {
+	panic("implement me")
+}
+