feat(input-reader): Add input-reader to node supervisor

internal/inputreader/inputbox.go

@@ -0,0 +1,55 @@
+// (c) Cartesi and individual authors (see AUTHORS)
+// SPDX-License-Identifier: Apache-2.0 (see LICENSE)
+
+package inputreader
+
+import (
+	"math/big"
+
+	"github.com/cartesi/rollups-node/pkg/contracts/inputbox"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/ethclient"
+)
+
+// InputBox Wrapper
+type InputBoxInputSource struct {
+	inputbox *inputbox.InputBox
+}
+
+func NewInputBoxInputSource(
+	inputBoxAddress common.Address,
+	client *ethclient.Client,
+) (*InputBoxInputSource, error) {
+	inputbox, err := inputbox.NewInputBox(inputBoxAddress, client)
+	if err != nil {
+		return nil, err
+	}
+	return &InputBoxInputSource{
+		inputbox: inputbox,
+	}, nil
+}
+
+func (i *InputBoxInputSource) RetrieveInputs(
+	opts *bind.FilterOpts,
+	appContract []common.Address,
+	index []*big.Int,
+) ([]*inputbox.InputBoxInputAdded, error) {
+
+	itr, err := i.inputbox.FilterInputAdded(opts, appContract, index)
+	if err != nil {
+		return nil, err
+	}
+	defer itr.Close()
+
+	var events []*inputbox.InputBoxInputAdded
+	for itr.Next() {
+		inputAddedEvent := itr.Event
+		events = append(events, inputAddedEvent)
+	}
+	err = itr.Error()
+	if err != nil {
+		return nil, err
+	}
+	return events, nil
+}

internal/inputreader/inputreader_service.go

@@ -0,0 +1,86 @@
+// (c) Cartesi and individual authors (see AUTHORS)
+// SPDX-License-Identifier: Apache-2.0 (see LICENSE)
+
+package inputreader
+
+import (
+	"context"
+
+	"github.com/cartesi/rollups-node/internal/repository"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/ethclient"
+)
+
+// Service to manage InputReader lifecycle
+type InputReaderService struct {
+	blockchainHttpEndpoint string
+	blockchainWsEndpoint   string
+	postgresEndpoint       string
+	inputBoxAddress        common.Address
+	inputBoxBlockNumber    uint64
+	applicationAddress     common.Address
+}
+
+func NewInputReaderService(
+	blockchainHttpEndpoint string,
+	blockchainWsEndpoint string,
+	postgresEndpoint string,
+	inputBoxAddress common.Address,
+	inputBoxBlockNumber uint64,
+	applicationAddress common.Address,
+) InputReaderService {
+	return InputReaderService{
+		blockchainHttpEndpoint: blockchainHttpEndpoint,
+		blockchainWsEndpoint:   blockchainWsEndpoint,
+		postgresEndpoint:       postgresEndpoint,
+		inputBoxAddress:        inputBoxAddress,
+		inputBoxBlockNumber:    inputBoxBlockNumber,
+		applicationAddress:     applicationAddress,
+	}
+}
+
+func (s InputReaderService) Start(
+	ctx context.Context,
+	ready chan<- struct{},
+) error {
+
+	db, err := repository.Connect(ctx, s.postgresEndpoint)
+
+	if err != nil {
+		return err
+	}
+
+	client, err := ethclient.DialContext(ctx, s.blockchainHttpEndpoint)
+	if err != nil {
+		return err
+	}
+	defer client.Close()
+
+	wsClient, err := ethclient.DialContext(ctx, s.blockchainWsEndpoint)
+	if err != nil {
+		return err
+	}
+	defer wsClient.Close()
+
+	inputBoxWrapper, err := NewInputBoxInputSource(s.inputBoxAddress, client)
+
+	if err != nil {
+		return err
+	}
+
+	reader := newInputReader(
+		client,
+		wsClient,
+		inputBoxWrapper,
+		db,
+		s.inputBoxAddress,
+		s.inputBoxBlockNumber,
+		s.applicationAddress,
+	)
+
+	return reader.Start(ctx, ready)
+}
+
+func (s InputReaderService) String() string {
+	return "input-reader"
+}

internal/node/services.go

@@ -8,8 +8,10 @@ import (
 	"log/slog"
 	"os"
 
+	"github.com/cartesi/rollups-node/internal/inputreader"
 	"github.com/cartesi/rollups-node/internal/node/config"
 	"github.com/cartesi/rollups-node/internal/services"
+	"github.com/ethereum/go-ethereum/common"
 )
 
 // We use an enum to define the ports of each service and avoid conflicts.
@@ -125,6 +127,7 @@ func newSupervisorService(c config.NodeConfig, workDir string) services.Supervis
 
 	s = append(s, newHttpService(c))
 	s = append(s, newPostgraphileService(c, workDir))
+	s = append(s, newInputReaderService(c))
 
 	supervisor := services.SupervisorService{
 		Name:     "rollups-node",
@@ -164,3 +167,14 @@ func newPostgraphileService(c config.NodeConfig, workDir string) services.Comman
 	s.WorkDir = workDir
 	return s
 }
+
+func newInputReaderService(c config.NodeConfig) services.Service {
+	return inputreader.NewInputReaderService(
+		c.BlockchainHttpEndpoint.Value,
+		c.BlockchainWsEndpoint.Value,
+		c.PostgresEndpoint.Value,
+		common.HexToAddress(c.ContractsInputBoxAddress),
+		uint64(c.ContractsInputBoxDeploymentBlockNumber),
+		common.HexToAddress(c.ContractsApplicationAddress),
+	)
+}