Revert "BCF-2564: update the relayer to use a chain rather than chain…

…set (#320)"

This reverts commit 2f61ad0.

relayer/pkg/chainlink/chain/chain.go

@@ -16,7 +16,6 @@ type ChainSet = types.ChainSet[string, Chain]
 type Chain interface {
 	types.ChainService
 
-	ID() string
 	Config() config.Config
 
 	TxManager() txm.TxManager

relayer/pkg/chainlink/relay.go

@@ -16,21 +16,21 @@ import (
 var _ relaytypes.Relayer = (*relayer)(nil)
 
 type relayer struct {
-	chain starkchain.Chain
-	ctx   context.Context
+	chainSet starkchain.ChainSet
+	ctx      context.Context
 
 	lggr logger.Logger
 
 	cancel func()
 }
 
-func NewRelayer(lggr logger.Logger, chain starkchain.Chain) *relayer {
+func NewRelayer(lggr logger.Logger, chainSet starkchain.ChainSet) *relayer {
 	ctx, cancel := context.WithCancel(context.Background())
 	return &relayer{
-		chain:  chain,
-		ctx:    ctx,
-		lggr:   lggr,
-		cancel: cancel,
+		chainSet: chainSet,
+		ctx:      ctx,
+		lggr:     lggr,
+		cancel:   cancel,
 	}
 }
 
@@ -48,7 +48,7 @@ func (r *relayer) Close() error {
 }
 
 func (r *relayer) Ready() error {
-	return r.chain.Ready()
+	return r.chainSet.Ready()
 }
 
 func (r *relayer) Healthy() error { return nil }
@@ -65,11 +65,16 @@ func (r *relayer) NewConfigProvider(args relaytypes.RelayArgs) (relaytypes.Confi
 		return nil, errors.Wrap(err, "couldn't unmarshal RelayConfig")
 	}
 
-	reader, err := r.chain.Reader()
+	chain, err := r.chainSet.Chain(r.ctx, relayConfig.ChainID)
+	if err != nil {
+		return nil, errors.Wrap(err, "couldn't initilize Chain")
+	}
+
+	reader, err := chain.Reader()
 	if err != nil {
 		return nil, errors.Wrap(err, "error in NewConfigProvider chain.Reader")
 	}
-	configProvider, err := ocr2.NewConfigProvider(r.chain.ID(), args.ContractID, reader, r.chain.Config(), r.lggr)
+	configProvider, err := ocr2.NewConfigProvider(relayConfig.ChainID, args.ContractID, reader, chain.Config(), r.lggr)
 	if err != nil {
 		return nil, errors.Wrap(err, "coudln't initialize ConfigProvider")
 	}
@@ -89,12 +94,17 @@ func (r *relayer) NewMedianProvider(rargs relaytypes.RelayArgs, pargs relaytypes
 		return nil, errors.New("no account address in relay config")
 	}
 
+	chain, err := r.chainSet.Chain(r.ctx, relayConfig.ChainID)
+	if err != nil {
+		return nil, errors.Wrap(err, "couldn't initilize Chain")
+	}
+
 	// todo: use pargs for median provider
-	reader, err := r.chain.Reader()
+	reader, err := chain.Reader()
 	if err != nil {
 		return nil, errors.Wrap(err, "error in NewMedianProvider chain.Reader")
 	}
-	medianProvider, err := ocr2.NewMedianProvider(r.chain.ID(), rargs.ContractID, pargs.TransmitterID, relayConfig.AccountAddress, reader, r.chain.Config(), r.chain.TxManager(), r.lggr)
+	medianProvider, err := ocr2.NewMedianProvider(relayConfig.ChainID, rargs.ContractID, pargs.TransmitterID, relayConfig.AccountAddress, reader, chain.Config(), chain.TxManager(), r.lggr)
 	if err != nil {
 		return nil, errors.Wrap(err, "couldn't initilize MedianProvider")
 	}