Flop deal (#39)

*Refactor deal transformer to take in several contract addresses
* Add flop address to deal transformer

db/migrations/1537814159_add_contract_address_to_deal.down.sql

@@ -0,0 +1,2 @@
+ALTER TABLE maker.deal
+  DROP COLUMN contract_address;

db/migrations/1537814159_add_contract_address_to_deal.up.sql

@@ -0,0 +1,2 @@
+ALTER TABLE maker.deal
+  ADD COLUMN contract_address VARCHAR;

db/schema.sql

@@ -105,7 +105,8 @@ CREATE TABLE maker.deal (
     header_id integer NOT NULL,
     bid_id numeric NOT NULL,
     tx_idx integer NOT NULL,
-    raw_log jsonb
+    raw_log jsonb,
+    contract_address character varying
 );
 
 

pkg/transformers/bite/config.go

@@ -21,7 +21,7 @@ import (
 )
 
 var BiteConfig = shared.TransformerConfig{
-	ContractAddress:     shared.CatContractAddress,
+	ContractAddresses:   []string{shared.CatContractAddress},
 	ContractAbi:         shared.CatABI,
 	Topics:              []string{shared.BiteSignature},
 	StartingBlockNumber: 0,

pkg/transformers/bite/integration_test.go

@@ -51,7 +51,7 @@ var _ = Describe("Integration tests", func() {
 		topic0 := common.HexToHash(shared.BiteSignature)
 		topics := [][]common.Hash{{topic0}}
 
-		result, err := realFetcher.FetchLogs(shared.CatContractAddress, topics, int64(26))
+		result, err := realFetcher.FetchLogs(bite.BiteConfig.ContractAddresses, topics, int64(26))
 		Expect(err).NotTo(HaveOccurred())
 
 		Expect(len(result) > 0).To(BeTrue())

pkg/transformers/bite/transformer.go

@@ -62,14 +62,14 @@ func (b BiteTransformer) Execute() error {
 
 	log.Printf("Fetching bite event logs for %d headers \n", len(missingHeaders))
 	for _, header := range missingHeaders {
-		ethLogs, err := b.Fetcher.FetchLogs(config.ContractAddress, topics, header.BlockNumber)
+		ethLogs, err := b.Fetcher.FetchLogs(config.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			log.Println("Error fetching matching logs:", err)
 			return err
 		}
 
 		for _, ethLog := range ethLogs {
-			entity, err := b.Converter.ToEntity(config.ContractAddress, config.ContractAbi, ethLog)
+			entity, err := b.Converter.ToEntity(ethLog.Address.Hex(), config.ContractAbi, ethLog)
 			model, err := b.Converter.ToModel(entity)
 			if err != nil {
 				log.Println("Error converting logs:", err)

pkg/transformers/bite/transfromer_test.go

@@ -38,7 +38,6 @@ var _ = Describe("Bite Transformer", func() {
 	var transformer bite.BiteTransformer
 	var blockNumber1 = rand.Int63()
 	var blockNumber2 = rand.Int63()
-	var testConfig shared.TransformerConfig
 
 	BeforeEach(func() {
 		repository = bite_mocks.MockBiteRepository{}
@@ -52,14 +51,7 @@ var _ = Describe("Bite Transformer", func() {
 			Config:     bite.BiteConfig,
 		}
 
-		testConfig = shared.TransformerConfig{
+		transformer.SetConfig(bite.BiteConfig)
-			ContractAddress:     "0x12345",
-			ContractAbi:         "test abi",
-			Topics:              []string{shared.BiteSignature},
-			StartingBlockNumber: blockNumber1,
-			EndingBlockNumber:   blockNumber2,
-		}
-		transformer.SetConfig(testConfig)
 	})
 
 	It("gets missing headers for blocks in the configured range", func() {
@@ -85,7 +77,7 @@ var _ = Describe("Bite Transformer", func() {
 		Expect(err).NotTo(HaveOccurred())
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{blockNumber1, blockNumber2}))
 		Expect(fetcher.FetchedTopics).To(Equal(expectedTopics))
-		Expect(fetcher.FetchedContractAddress).To(Equal(bite.BiteConfig.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{bite.BiteConfig.ContractAddresses, bite.BiteConfig.ContractAddresses}))
 	})
 
 	It("returns an error if fetching logs fails", func() {
@@ -103,7 +95,7 @@ var _ = Describe("Bite Transformer", func() {
 		err := transformer.Execute()
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(converter.ConverterContract).To(Equal(bite.BiteConfig.ContractAddress))
+		Expect(converter.ConverterContract).To(Equal(test_data.EthBiteLog.Address.Hex()))
 		Expect(converter.ConverterAbi).To(Equal(bite.BiteConfig.ContractAbi))
 		Expect(converter.LogsToConvert).To(Equal([]types.Log{test_data.EthBiteLog}))
 	})

pkg/transformers/deal/config.go

@@ -17,7 +17,7 @@ package deal
 import "github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
 
 var Config = shared.TransformerConfig{
-	ContractAddress:     shared.FlipperContractAddress,
+	ContractAddresses:   []string{shared.FlipperContractAddress, shared.FlopperContractAddress},
 	ContractAbi:         shared.FlipperABI,
 	Topics:              []string{shared.DealSignature},
 	StartingBlockNumber: 0,

pkg/transformers/deal/converter.go

@@ -46,11 +46,13 @@ func (DealConverter) ToModels(ethLogs []types.Log) (result []DealModel, err erro
 
 		model := DealModel{
 			BidId:            bidId.String(),
+			ContractAddress:  log.Address.Hex(),
 			TransactionIndex: log.TxIndex,
 			Raw:              raw,
 		}
 		result = append(result, model)
 	}
+
 	return result, nil
 }
 

pkg/transformers/deal/model.go

@@ -16,6 +16,7 @@ package deal
 
 type DealModel struct {
 	BidId            string `db:"bid_id"`
+	ContractAddress  string `db:"contract_address"`
 	TransactionIndex uint   `db:"tx_idx"`
 	Raw              []byte `db:"raw_log"`
 }

pkg/transformers/deal/repository.go

@@ -38,9 +38,9 @@ func (r DealRepository) Create(headerId int64, models []DealModel) error {
 	}
 	for _, model := range models {
 		_, err = tx.Exec(
-			`INSERT into maker.deal (header_id, bid_id, tx_idx, raw_log)
+			`INSERT into maker.deal (header_id, bid_id, contract_address, tx_idx, raw_log)
-         VALUES($1, $2, $3, $4)`,
+					 VALUES($1, $2, $3, $4, $5)`,
-			headerId, model.BidId, model.TransactionIndex, model.Raw,
+			headerId, model.BidId, model.ContractAddress, model.TransactionIndex, model.Raw,
 		)
 		if err != nil {
 			tx.Rollback()

pkg/transformers/deal/repository_test.go

@@ -57,9 +57,10 @@ var _ = Describe("Deal Repository", func() {
 			db.QueryRow(`SELECT count(*) FROM maker.deal`).Scan(&count)
 			Expect(count).To(Equal(1))
 			var dbResult deal.DealModel
-			err = db.Get(&dbResult, `SELECT bid_id, tx_idx, raw_log FROM maker.deal WHERE header_id = $1`, headerId)
+			err = db.Get(&dbResult, `SELECT bid_id, contract_address, tx_idx, raw_log FROM maker.deal WHERE header_id = $1`, headerId)
 			Expect(err).NotTo(HaveOccurred())
 			Expect(dbResult.BidId).To(Equal(test_data.DealModel.BidId))
+			Expect(dbResult.ContractAddress).To(Equal(test_data.DealModel.ContractAddress))
 			Expect(dbResult.TransactionIndex).To(Equal(test_data.DealModel.TransactionIndex))
 			Expect(dbResult.Raw).To(MatchJSON(test_data.DealModel.Raw))
 		})

pkg/transformers/deal/transformer.go

@@ -58,7 +58,7 @@ func (t DealTransformer) Execute() error {
 
 	log.Printf("Fetching deal event logs for %d headers \n", len(headers))
 	for _, header := range headers {
-		ethLogs, err := t.Fetcher.FetchLogs(config.ContractAddress, topics, header.BlockNumber)
+		ethLogs, err := t.Fetcher.FetchLogs(config.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			log.Println("Error fetching deal logs:", err)
 			return err

pkg/transformers/deal/transformer_test.go

@@ -68,7 +68,7 @@ var _ = Describe("DealTransformer", func() {
 		dealRepository.SetMissingHeaders([]core.Header{header1, header2})
 		err := transformer.Execute()
 		Expect(err).NotTo(HaveOccurred())
-		Expect(fetcher.FetchedContractAddress).To(Equal(config.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{config.ContractAddresses, config.ContractAddresses}))
 		expectedTopics := [][]common.Hash{{common.HexToHash(shared.DealSignature)}}
 		Expect(fetcher.FetchedTopics).To(Equal(expectedTopics))
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{header1.BlockNumber, header2.BlockNumber}))

pkg/transformers/dent/config.go

@@ -17,7 +17,7 @@ package dent
 import "github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
 
 var DentConfig = shared.TransformerConfig{
-	ContractAddress:     shared.FlipperContractAddress,
+	ContractAddresses:   []string{shared.FlipperContractAddress},
 	ContractAbi:         shared.FlipperABI,
 	Topics:              []string{shared.DentFunctionSignature},
 	StartingBlockNumber: 0,

pkg/transformers/dent/transformer.go

@@ -53,7 +53,8 @@ func (t DentTransformer) Execute() error {
 	headers, err := t.Repository.MissingHeaders(config.StartingBlockNumber, config.EndingBlockNumber)
 	log.Printf("Fetching dent event logs for %d headers \n", len(headers))
 	for _, header := range headers {
-		ethLogs, err := t.Fetcher.FetchLogs(config.ContractAddress, topics, header.BlockNumber)
+		ethLogs, err := t.Fetcher.FetchLogs(config.ContractAddresses, topics, header.BlockNumber)
+
 		if err != nil {
 			log.Println("Error fetching dent logs:", err)
 			return err

pkg/transformers/dent/transformer_test.go

@@ -73,7 +73,7 @@ var _ = Describe("DentTransformer", func() {
 		err := transformer.Execute()
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(fetcher.FetchedContractAddress).To(Equal(config.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{config.ContractAddresses, config.ContractAddresses}))
 		expectedTopics := [][]common.Hash{{common.HexToHash(shared.DentFunctionSignature)}}
 		Expect(fetcher.FetchedTopics).To(Equal(expectedTopics))
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{header1.BlockNumber, header2.BlockNumber}))

pkg/transformers/drip_drip/config.go

@@ -17,7 +17,7 @@ package drip_drip
 import "github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
 
 var DripDripConfig = shared.TransformerConfig{
-	ContractAddress:     shared.DripContractAddress,
+	ContractAddresses:   []string{shared.DripContractAddress},
 	ContractAbi:         shared.DripABI,
 	Topics:              []string{shared.DripDripSignature},
 	StartingBlockNumber: 0,

pkg/transformers/drip_drip/transformer.go

@@ -55,7 +55,7 @@ func (transformer DripDripTransformer) Execute() error {
 	log.Printf("Fetching drip drip event logs for %d headers \n", len(missingHeaders))
 	for _, header := range missingHeaders {
 		topics := [][]common.Hash{{common.HexToHash(shared.DripDripSignature)}}
-		matchingLogs, err := transformer.Fetcher.FetchLogs(transformer.Config.ContractAddress, topics, header.BlockNumber)
+		matchingLogs, err := transformer.Fetcher.FetchLogs(transformer.Config.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			return err
 		}

pkg/transformers/drip_drip/transformer_test.go

@@ -76,7 +76,7 @@ var _ = Describe("Drip drip transformer", func() {
 
 		Expect(err).NotTo(HaveOccurred())
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{1, 2}))
-		Expect(fetcher.FetchedContractAddress).To(Equal(drip_drip.DripDripConfig.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{drip_drip.DripDripConfig.ContractAddresses, drip_drip.DripDripConfig.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal([][]common.Hash{{common.HexToHash(shared.DripDripSignature)}}))
 	})
 

pkg/transformers/drip_file/config.go

@@ -17,7 +17,7 @@ package drip_file
 import "github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
 
 var DripFileConfig = shared.TransformerConfig{
-	ContractAddress:     shared.DripContractAddress,
+	ContractAddresses:   []string{shared.DripContractAddress},
 	ContractAbi:         shared.DripABI,
 	Topics:              []string{shared.DripFileIlkSignature, shared.DripFileRepoSignature},
 	StartingBlockNumber: 0,

pkg/transformers/drip_file/ilk/transformer.go

@@ -56,7 +56,7 @@ func (transformer DripFileIlkTransformer) Execute() error {
 	log.Printf("Fetching drip file ilk event logs for %d headers \n", len(missingHeaders))
 	for _, header := range missingHeaders {
 		topics := [][]common.Hash{{common.HexToHash(shared.DripFileIlkSignature)}}
-		matchingLogs, err := transformer.Fetcher.FetchLogs(drip_file.DripFileConfig.ContractAddress, topics, header.BlockNumber)
+		matchingLogs, err := transformer.Fetcher.FetchLogs(drip_file.DripFileConfig.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			return err
 		}

pkg/transformers/drip_file/ilk/transformer_test.go

@@ -75,7 +75,7 @@ var _ = Describe("Drip file ilk transformer", func() {
 
 		Expect(err).NotTo(HaveOccurred())
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{1, 2}))
-		Expect(fetcher.FetchedContractAddress).To(Equal(drip_file.DripFileConfig.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{drip_file.DripFileConfig.ContractAddresses, drip_file.DripFileConfig.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal([][]common.Hash{{common.HexToHash(shared.DripFileIlkSignature)}}))
 	})
 

pkg/transformers/drip_file/repo/transformer.go

@@ -56,7 +56,7 @@ func (transformer DripFileRepoTransformer) Execute() error {
 	log.Printf("Fetching drip file repo event logs for %d headers \n", len(missingHeaders))
 	for _, header := range missingHeaders {
 		topics := [][]common.Hash{{common.HexToHash(shared.DripFileRepoSignature)}}
-		matchingLogs, err := transformer.Fetcher.FetchLogs(drip_file.DripFileConfig.ContractAddress, topics, header.BlockNumber)
+		matchingLogs, err := transformer.Fetcher.FetchLogs(drip_file.DripFileConfig.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			return err
 		}

pkg/transformers/drip_file/repo/transformer_test.go

@@ -76,7 +76,7 @@ var _ = Describe("Drip file repo transformer", func() {
 
 		Expect(err).NotTo(HaveOccurred())
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{1, 2}))
-		Expect(fetcher.FetchedContractAddress).To(Equal(drip_file.DripFileConfig.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{drip_file.DripFileConfig.ContractAddresses, drip_file.DripFileConfig.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal([][]common.Hash{{common.HexToHash(shared.DripFileRepoSignature)}}))
 	})
 

pkg/transformers/drip_file/vow/transformer.go

@@ -56,7 +56,7 @@ func (transformer DripFileVowTransformer) Execute() error {
 	log.Printf("Fetching drip file vow event logs for %d headers \n", len(missingHeaders))
 	for _, header := range missingHeaders {
 		topics := [][]common.Hash{{common.HexToHash(shared.DripFileVowSignature)}}
-		matchingLogs, err := transformer.Fetcher.FetchLogs(drip_file.DripFileConfig.ContractAddress, topics, header.BlockNumber)
+		matchingLogs, err := transformer.Fetcher.FetchLogs(drip_file.DripFileConfig.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			return err
 		}

pkg/transformers/drip_file/vow/transformer_test.go

@@ -76,7 +76,7 @@ var _ = Describe("Drip file vow transformer", func() {
 
 		Expect(err).NotTo(HaveOccurred())
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{1, 2}))
-		Expect(fetcher.FetchedContractAddress).To(Equal(drip_file.DripFileConfig.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{drip_file.DripFileConfig.ContractAddresses, drip_file.DripFileConfig.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal([][]common.Hash{{common.HexToHash(shared.DripFileVowSignature)}}))
 	})
 

pkg/transformers/flip_kick/config.go

@@ -17,7 +17,7 @@ package flip_kick
 import "github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
 
 var FlipKickConfig = shared.TransformerConfig{
-	ContractAddress:     shared.FlipperContractAddress,
+	ContractAddresses:   []string{shared.FlipperContractAddress},
 	ContractAbi:         shared.FlipperABI,
 	Topics:              []string{shared.FlipKickSignature},
 	StartingBlockNumber: 0,

pkg/transformers/flip_kick/converter.go

@@ -28,16 +28,16 @@ import (
 )
 
 type Converter interface {
-	ToEntities(contractAddress string, contractAbi string, ethLogs []types.Log) ([]FlipKickEntity, error)
+	ToEntities(contractAbi string, ethLogs []types.Log) ([]FlipKickEntity, error)
 	ToModels(flipKicks []FlipKickEntity) ([]FlipKickModel, error)
 }
 
 type FlipKickConverter struct{}
 
-func (FlipKickConverter) ToEntities(contractAddress string, contractAbi string, ethLogs []types.Log) (results []FlipKickEntity, err error) {
+func (FlipKickConverter) ToEntities(contractAbi string, ethLogs []types.Log) (results []FlipKickEntity, err error) {
 	for _, ethLog := range ethLogs {
 		entity := &FlipKickEntity{}
-		address := common.HexToAddress(contractAddress)
+		address := ethLog.Address
 		abi, err := geth.ParseAbi(contractAbi)
 		if err != nil {
 			return nil, err

pkg/transformers/flip_kick/converter_test.go

@@ -33,7 +33,7 @@ var _ = Describe("FlipKick Converter", func() {
 
 	Describe("ToEntity", func() {
 		It("converts an Eth Log to a FlipKickEntity", func() {
-			entities, err := converter.ToEntities(shared.FlipperContractAddress, shared.FlipperABI, []types.Log{test_data.EthFlipKickLog})
+			entities, err := converter.ToEntities(shared.FlipperABI, []types.Log{test_data.EthFlipKickLog})
 
 			Expect(err).NotTo(HaveOccurred())
 			Expect(len(entities)).To(Equal(1))
@@ -49,7 +49,7 @@ var _ = Describe("FlipKick Converter", func() {
 		})
 
 		It("returns an error if converting log to entity fails", func() {
-			_, err := converter.ToEntities(shared.FlipperContractAddress, "error abi", []types.Log{test_data.EthFlipKickLog})
+			_, err := converter.ToEntities("error abi", []types.Log{test_data.EthFlipKickLog})
 
 			Expect(err).To(HaveOccurred())
 		})

pkg/transformers/flip_kick/transformer.go

@@ -91,10 +91,11 @@ func (fkt FlipKickTransformer) Execute() error {
 	log.Printf("Fetching flip kick event logs for %d headers \n", len(headers))
 	var resultingErrors []error
 	for _, header := range headers {
-		ethLogs, err := fkt.Fetcher.FetchLogs(config.ContractAddress, topics, header.BlockNumber)
+		ethLogs, err := fkt.Fetcher.FetchLogs(config.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			resultingErrors = append(resultingErrors, newTransformerError(err, header.BlockNumber, FetcherError))
 		}
+
 		if len(ethLogs) < 1 {
 			err := fkt.Repository.MarkHeaderChecked(header.Id)
 			if err != nil {
@@ -102,7 +103,7 @@ func (fkt FlipKickTransformer) Execute() error {
 			}
 		}
 
-		entities, err := fkt.Converter.ToEntities(config.ContractAddress, config.ContractAbi, ethLogs)
+		entities, err := fkt.Converter.ToEntities(config.ContractAbi, ethLogs)
 		if err != nil {
 			resultingErrors = append(resultingErrors, newTransformerError(err, header.BlockNumber, LogToEntityError))
 		}

pkg/transformers/flip_kick/transformer_test.go

@@ -36,7 +36,6 @@ var _ = Describe("FlipKick Transformer", func() {
 	var fetcher mocks.MockLogFetcher
 	var converter flip_kick_mocks.MockFlipKickConverter
 	var repository flip_kick_mocks.MockFlipKickRepository
-	var testConfig shared.TransformerConfig
 	var blockNumber int64
 	var headerId int64
 	var headers []core.Header
@@ -51,16 +50,7 @@ var _ = Describe("FlipKick Transformer", func() {
 			Converter:  &converter,
 			Repository: &repository,
 		}
-
+		transformer.SetConfig(flip_kick.FlipKickConfig)
-		startingBlockNumber := rand.Int63()
-		testConfig = shared.TransformerConfig{
-			ContractAddress:     "0x12345",
-			ContractAbi:         "test abi",
-			Topics:              []string{shared.FlipKickSignature},
-			StartingBlockNumber: startingBlockNumber,
-			EndingBlockNumber:   startingBlockNumber + 5,
-		}
-		transformer.SetConfig(testConfig)
 
 		blockNumber = rand.Int63()
 		headerId = rand.Int63()
@@ -83,7 +73,7 @@ var _ = Describe("FlipKick Transformer", func() {
 		err := transformer.Execute()
 		Expect(err).NotTo(HaveOccurred())
 
-		Expect(fetcher.FetchedContractAddress).To(Equal(testConfig.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{flip_kick.FlipKickConfig.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal(expectedTopics))
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{blockNumber}))
 	})
@@ -136,8 +126,8 @@ var _ = Describe("FlipKick Transformer", func() {
 		err := transformer.Execute()
 		Expect(err).NotTo(HaveOccurred())
 
-		Expect(converter.ConverterContract).To(Equal(testConfig.ContractAddress))
+		Expect(converter.ConverterContracts).To(Equal(flip_kick.FlipKickConfig.ContractAddresses))
-		Expect(converter.ConverterAbi).To(Equal(testConfig.ContractAbi))
+		Expect(converter.ConverterAbi).To(Equal(flip_kick.FlipKickConfig.ContractAbi))
 		Expect(converter.LogsToConvert).To(Equal(logs))
 		Expect(converter.EntitiesToConvert).To(Equal([]flip_kick.FlipKickEntity{test_data.FlipKickEntity}))
 	})
@@ -175,7 +165,7 @@ var _ = Describe("FlipKick Transformer", func() {
 		err := transformer.Execute()
 		Expect(err).NotTo(HaveOccurred())
 
-		Expect(repository.StartingBlockNumber).To(Equal(testConfig.StartingBlockNumber))
+		Expect(repository.StartingBlockNumber).To(Equal(flip_kick.FlipKickConfig.StartingBlockNumber))
-		Expect(repository.EndingBlockNumber).To(Equal(testConfig.EndingBlockNumber))
+		Expect(repository.EndingBlockNumber).To(Equal(flip_kick.FlipKickConfig.EndingBlockNumber))
 	})
 })

pkg/transformers/flop_kick/config.go

@@ -17,7 +17,7 @@ package flop_kick
 import "github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
 
 var Config = shared.TransformerConfig{
-	ContractAddress:     shared.FlopperContractAddress,
+	ContractAddresses:   []string{shared.FlopperContractAddress},
 	ContractAbi:         shared.FlopperABI,
 	Topics:              []string{shared.FlopKickSignature},
 	StartingBlockNumber: 0,

pkg/transformers/flop_kick/converter.go

@@ -19,7 +19,6 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/accounts/abi/bind"
-	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 
 	"github.com/vulcanize/vulcanizedb/pkg/geth"
@@ -27,17 +26,17 @@ import (
 )
 
 type Converter interface {
-	ToEntities(contractAddress, contractAbi string, ethLogs []types.Log) ([]Entity, error)
+	ToEntities(contractAbi string, ethLogs []types.Log) ([]Entity, error)
 	ToModels(entities []Entity) ([]Model, error)
 }
 
 type FlopKickConverter struct{}
 
-func (FlopKickConverter) ToEntities(contractAddress, contractAbi string, ethLogs []types.Log) ([]Entity, error) {
+func (FlopKickConverter) ToEntities(contractAbi string, ethLogs []types.Log) ([]Entity, error) {
 	var results []Entity
 	for _, ethLog := range ethLogs {
 		entity := Entity{}
-		address := common.HexToAddress(contractAddress)
+		address := ethLog.Address
 		abi, err := geth.ParseAbi(contractAbi)
 		if err != nil {
 			return nil, err

pkg/transformers/flop_kick/converter_test.go

@@ -30,7 +30,7 @@ var _ = Describe("FlopKick Converter", func() {
 	Describe("ToEntities", func() {
 		It("converts a log to a FlopKick entity", func() {
 			converter := flop_kick.FlopKickConverter{}
-			entities, err := converter.ToEntities(shared.FlopperContractAddress, shared.FlopperABI, []types.Log{test_data.FlopKickLog})
+			entities, err := converter.ToEntities(shared.FlopperABI, []types.Log{test_data.FlopKickLog})
 
 			Expect(err).NotTo(HaveOccurred())
 			entity := entities[0]
@@ -45,7 +45,7 @@ var _ = Describe("FlopKick Converter", func() {
 
 		It("returns an error if converting the log to an entity fails", func() {
 			converter := flop_kick.FlopKickConverter{}
-			entities, err := converter.ToEntities(shared.FlopperContractAddress, "error abi", []types.Log{test_data.FlopKickLog})
+			entities, err := converter.ToEntities("error abi", []types.Log{test_data.FlopKickLog})
 
 			Expect(err).To(HaveOccurred())
 			Expect(entities).To(BeNil())

pkg/transformers/flop_kick/transformer.go

@@ -51,7 +51,7 @@ func (t Transformer) Execute() error {
 
 	for _, header := range headers {
 		topics := [][]common.Hash{{common.HexToHash(shared.FlopKickSignature)}}
-		matchingLogs, err := t.Fetcher.FetchLogs(config.ContractAddress, topics, header.BlockNumber)
+		matchingLogs, err := t.Fetcher.FetchLogs(config.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			return err
 		}
@@ -62,7 +62,7 @@ func (t Transformer) Execute() error {
 			}
 		}
 
-		entities, err := t.Converter.ToEntities(config.ContractAddress, config.ContractAbi, matchingLogs)
+		entities, err := t.Converter.ToEntities(config.ContractAbi, matchingLogs)
 		if err != nil {
 			return err
 		}

pkg/transformers/flop_kick/transformer_test.go

@@ -87,7 +87,7 @@ var _ = Describe("FlopKick Transformer", func() {
 
 		Expect(err).NotTo(HaveOccurred())
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{headerOne.BlockNumber, headerTwo.BlockNumber}))
-		Expect(fetcher.FetchedContractAddress).To(Equal(flop_kick.Config.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{flop_kick.Config.ContractAddresses, flop_kick.Config.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal([][]common.Hash{{common.HexToHash(shared.FlopKickSignature)}}))
 	})
 
@@ -154,7 +154,7 @@ var _ = Describe("FlopKick Transformer", func() {
 		err := transformer.Execute()
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(converter.PassedContractAddress).To(Equal(flop_kick.Config.ContractAddress))
+		Expect(converter.PassedContractAddresses).To(Equal(flop_kick.Config.ContractAddresses))
 		Expect(converter.PassedContractABI).To(Equal(flop_kick.Config.ContractAbi))
 		Expect(converter.PassedLogs).To(Equal([]types.Log{test_data.FlopKickLog}))
 	})

pkg/transformers/frob/config.go

@@ -17,7 +17,7 @@ package frob
 import "github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
 
 var FrobConfig = shared.TransformerConfig{
-	ContractAddress:     shared.PitContractAddress,
+	ContractAddresses:   []string{shared.PitContractAddress},
 	ContractAbi:         shared.PitABI,
 	Topics:              []string{shared.FrobSignature},
 	StartingBlockNumber: 0,

pkg/transformers/frob/integration_test.go

@@ -49,7 +49,7 @@ var _ = Describe("Integration tests", func() {
 		topic0 := common.HexToHash(shared.FrobSignature)
 		topics := [][]common.Hash{{topic0}}
 
-		result, err := realFetcher.FetchLogs(shared.PitContractAddress, topics, int64(12))
+		result, err := realFetcher.FetchLogs(frob.FrobConfig.ContractAddresses, topics, int64(12))
 		Expect(err).NotTo(HaveOccurred())
 
 		Expect(len(result) > 0).To(BeTrue())

pkg/transformers/frob/transformer.go

@@ -55,12 +55,12 @@ func (transformer FrobTransformer) Execute() error {
 	log.Printf("Fetching frob event logs for %d headers \n", len(missingHeaders))
 	for _, header := range missingHeaders {
 		topics := [][]common.Hash{{common.HexToHash(shared.FrobSignature)}}
-		matchingLogs, err := transformer.Fetcher.FetchLogs(FrobConfig.ContractAddress, topics, header.BlockNumber)
+		matchingLogs, err := transformer.Fetcher.FetchLogs(FrobConfig.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			return err
 		}
 		for _, log := range matchingLogs {
-			entity, err := transformer.Converter.ToEntity(FrobConfig.ContractAddress, FrobConfig.ContractAbi, log)
+			entity, err := transformer.Converter.ToEntity(log.Address.Hex(), FrobConfig.ContractAbi, log)
 			if err != nil {
 				return err
 			}

pkg/transformers/frob/transformer_test.go

@@ -75,7 +75,7 @@ var _ = Describe("Frob transformer", func() {
 
 		Expect(err).NotTo(HaveOccurred())
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{1, 2}))
-		Expect(fetcher.FetchedContractAddress).To(Equal(frob.FrobConfig.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{frob.FrobConfig.ContractAddresses, frob.FrobConfig.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal([][]common.Hash{{common.HexToHash(shared.FrobSignature)}}))
 	})
 
@@ -111,7 +111,7 @@ var _ = Describe("Frob transformer", func() {
 		err := transformer.Execute()
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(converter.PassedContractAddress).To(Equal(frob.FrobConfig.ContractAddress))
+		Expect(converter.PassedContractAddress).To(Equal(test_data.EthFrobLog.Address.Hex()))
 		Expect(converter.PassedContractABI).To(Equal(frob.FrobConfig.ContractAbi))
 		Expect(converter.PassedLog).To(Equal(test_data.EthFrobLog))
 	})

pkg/transformers/pit_file/config.go

@@ -19,7 +19,7 @@ import (
 )
 
 var PitFileConfig = shared.TransformerConfig{
-	ContractAddress:     shared.PitContractAddress,
+	ContractAddresses:   []string{shared.PitContractAddress},
 	ContractAbi:         shared.PitABI,
 	Topics:              []string{shared.PitFileIlkSignature, shared.PitFileDebtCeilingSignature, shared.PitFileStabilityFeeSignature},
 	StartingBlockNumber: 0,

pkg/transformers/pit_file/debt_ceiling/transformer.go

@@ -56,7 +56,7 @@ func (transformer PitFileDebtCeilingTransformer) Execute() error {
 	log.Printf("Fetching pit file debt ceiling event logs for %d headers \n", len(missingHeaders))
 	for _, header := range missingHeaders {
 		topics := [][]common.Hash{{common.HexToHash(shared.PitFileDebtCeilingSignature)}}
-		matchingLogs, err := transformer.Fetcher.FetchLogs(pit_file.PitFileConfig.ContractAddress, topics, header.BlockNumber)
+		matchingLogs, err := transformer.Fetcher.FetchLogs(pit_file.PitFileConfig.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			return err
 		}

pkg/transformers/pit_file/debt_ceiling/transformer_test.go

@@ -76,7 +76,7 @@ var _ = Describe("", func() {
 
 		Expect(err).NotTo(HaveOccurred())
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{1, 2}))
-		Expect(fetcher.FetchedContractAddress).To(Equal(pit_file.PitFileConfig.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{pit_file.PitFileConfig.ContractAddresses, pit_file.PitFileConfig.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal([][]common.Hash{{common.HexToHash(shared.PitFileDebtCeilingSignature)}}))
 	})
 

pkg/transformers/pit_file/ilk/transformer.go

@@ -56,7 +56,7 @@ func (transformer PitFileIlkTransformer) Execute() error {
 	log.Printf("Fetching pit file ilk event logs for %d headers \n", len(missingHeaders))
 	for _, header := range missingHeaders {
 		topics := [][]common.Hash{{common.HexToHash(shared.PitFileIlkSignature)}}
-		matchingLogs, err := transformer.Fetcher.FetchLogs(pit_file.PitFileConfig.ContractAddress, topics, header.BlockNumber)
+		matchingLogs, err := transformer.Fetcher.FetchLogs(pit_file.PitFileConfig.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			return err
 		}

pkg/transformers/pit_file/ilk/transformer_test.go

@@ -76,7 +76,7 @@ var _ = Describe("Pit file ilk transformer", func() {
 
 		Expect(err).NotTo(HaveOccurred())
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{1, 2}))
-		Expect(fetcher.FetchedContractAddress).To(Equal(pit_file.PitFileConfig.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{pit_file.PitFileConfig.ContractAddresses, pit_file.PitFileConfig.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal([][]common.Hash{{common.HexToHash(shared.PitFileIlkSignature)}}))
 	})
 

pkg/transformers/pit_file/stability_fee/transformer.go

@@ -56,7 +56,7 @@ func (transformer PitFileStabilityFeeTransformer) Execute() error {
 	log.Printf("Fetching pit file stability fee event logs for %d headers \n", len(missingHeaders))
 	for _, header := range missingHeaders {
 		topics := [][]common.Hash{{common.HexToHash(shared.PitFileStabilityFeeSignature)}}
-		matchingLogs, err := transformer.Fetcher.FetchLogs(pit_file.PitFileConfig.ContractAddress, topics, header.BlockNumber)
+		matchingLogs, err := transformer.Fetcher.FetchLogs(pit_file.PitFileConfig.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			return err
 		}

pkg/transformers/pit_file/stability_fee/transformer_test.go

@@ -76,7 +76,7 @@ var _ = Describe("", func() {
 
 		Expect(err).NotTo(HaveOccurred())
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{1, 2}))
-		Expect(fetcher.FetchedContractAddress).To(Equal(pit_file.PitFileConfig.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{pit_file.PitFileConfig.ContractAddresses, pit_file.PitFileConfig.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal([][]common.Hash{{common.HexToHash(shared.PitFileStabilityFeeSignature)}}))
 	})
 

pkg/transformers/shared/constants.go

@@ -28,8 +28,8 @@ var (
 	// temporary addresses from Kovan deployment
 	CatContractAddress     = "0x2f34f22a00ee4b7a8f8bbc4eaee1658774c624e0"
 	DripContractAddress    = "0x891c04639a5edcae088e546fa125b5d7fb6a2b9d"
-	FlipperContractAddress = "0x32d496ad866d110060866b7125981c73642cc509" // ETH FLIP Contract
+	FlipperContractAddress = "0x32D496Ad866D110060866B7125981C73642cc509" // ETH FLIP Contract
-	FlopperContractAddress = "0x6191c9b0086c2ebf92300cc507009b53996fbffa" // MCD FLOP Contract
+	FlopperContractAddress = "0x6191C9b0086c2eBF92300cC507009b53996FbFFa" // MCD FLOP Contract
 	PepContractAddress     = "0xB1997239Cfc3d15578A3a09730f7f84A90BB4975"
 	PipContractAddress     = "0x9FfFE440258B79c5d6604001674A4722FfC0f7Bc"
 	PitContractAddress     = "0xe7cf3198787c9a4daac73371a38f29aaeeced87e"

pkg/transformers/shared/log_fetcher.go

@@ -25,7 +25,7 @@ import (
 )
 
 type LogFetcher interface {
-	FetchLogs(contractAddress string, topics [][]common.Hash, blockNumber int64) ([]types.Log, error)
+	FetchLogs(contractAddresses []string, topics [][]common.Hash, blockNumber int64) ([]types.Log, error)
 }
 
 type Fetcher struct {
@@ -38,14 +38,24 @@ func NewFetcher(blockchain core.BlockChain) Fetcher {
 	}
 }
 
-func (fetcher Fetcher) FetchLogs(contractAddress string, topics [][]common.Hash, blockNumber int64) ([]types.Log, error) {
+func (fetcher Fetcher) FetchLogs(contractAddresses []string, topics [][]common.Hash, blockNumber int64) ([]types.Log, error) {
 	block := big.NewInt(blockNumber)
-	address := common.HexToAddress(contractAddress)
+	addresses := hexStringsToAddresses(contractAddresses)
 	query := ethereum.FilterQuery{
 		FromBlock: block,
 		ToBlock:   block,
-		Addresses: []common.Address{address},
+		Addresses: addresses,
 		Topics:    topics,
 	}
 	return fetcher.blockChain.GetEthLogsWithCustomQuery(query)
 }
+
+func hexStringsToAddresses(hexStrings []string) []common.Address {
+	var addresses []common.Address
+	for _, hexString := range hexStrings {
+		address := common.HexToAddress(hexString)
+		addresses = append(addresses, address)
+	}
+
+	return addresses
+}

pkg/transformers/shared/log_fetcher_test.go

@@ -28,25 +28,25 @@ import (
 
 var _ = Describe("Fetcher", func() {
 	Describe("FetchLogs", func() {
-
 		It("fetches logs based on the given query", func() {
 			blockChain := fakes.NewMockBlockChain()
 			fetcher := shared.NewFetcher(blockChain)
 			blockNumber := int64(123)
-			address := "0xfakeAddress"
+			addresses := []string{"0xfakeAddress", "0xanotherFakeAddress"}
 			topicZeros := [][]common.Hash{{common.BytesToHash([]byte{1, 2, 3, 4, 5})}}
 
-			_, err := fetcher.FetchLogs(address, topicZeros, blockNumber)
+			_, err := fetcher.FetchLogs(addresses, topicZeros, blockNumber)
 
+			address1 := common.HexToAddress("0xfakeAddress")
+			address2 := common.HexToAddress("0xanotherFakeAddress")
 			Expect(err).NotTo(HaveOccurred())
 			expectedQuery := ethereum.FilterQuery{
 				FromBlock: big.NewInt(blockNumber),
 				ToBlock:   big.NewInt(blockNumber),
-				Addresses: []common.Address{common.HexToAddress(address)},
+				Addresses: []common.Address{address1, address2},
 				Topics:    topicZeros,
 			}
 			blockChain.AssertGetEthLogsWithCustomQueryCalledWith(expectedQuery)
-
 		})
 
 		It("returns an error if fetching the logs fails", func() {
@@ -54,7 +54,7 @@ var _ = Describe("Fetcher", func() {
 			blockChain.SetGetEthLogsWithCustomQueryErr(fakes.FakeError)
 			fetcher := shared.NewFetcher(blockChain)
 
-			_, err := fetcher.FetchLogs("", [][]common.Hash{}, int64(1))
+			_, err := fetcher.FetchLogs([]string{}, [][]common.Hash{}, int64(1))
 
 			Expect(err).To(HaveOccurred())
 			Expect(err).To(MatchError(fakes.FakeError))

pkg/transformers/shared/transformer.go

@@ -28,7 +28,7 @@ type Transformer interface {
 type TransformerInitializer func(db *postgres.DB, blockChain core.BlockChain) Transformer
 
 type TransformerConfig struct {
-	ContractAddress     string
+	ContractAddresses   []string
 	ContractAbi         string
 	Topics              []string
 	StartingBlockNumber int64

pkg/transformers/tend/config.go

@@ -17,7 +17,7 @@ package tend
 import "github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
 
 var TendConfig = shared.TransformerConfig{
-	ContractAddress:     shared.FlipperContractAddress,
+	ContractAddresses:   []string{shared.FlipperContractAddress},
 	ContractAbi:         shared.FlipperABI,
 	Topics:              []string{shared.TendFunctionSignature},
 	StartingBlockNumber: 0,

pkg/transformers/tend/converter.go

@@ -24,7 +24,7 @@ import (
 )
 
 type Converter interface {
-	Convert(ethLogs []types.Log) ([]TendModel, error)
+	ToModels(ethLogs []types.Log) ([]TendModel, error)
 }
 
 type TendConverter struct{}
@@ -33,7 +33,7 @@ func NewTendConverter() TendConverter {
 	return TendConverter{}
 }
 
-func (c TendConverter) Convert(ethLogs []types.Log) (results []TendModel, err error) {
+func (c TendConverter) ToModels(ethLogs []types.Log) (results []TendModel, err error) {
 	for _, ethLog := range ethLogs {
 		err := validateLog(ethLog)
 		if err != nil {

pkg/transformers/tend/converter_test.go

@@ -31,9 +31,9 @@ var _ = Describe("Tend TendConverter", func() {
 		converter = tend.NewTendConverter()
 	})
 
-	Describe("Convert", func() {
+	Describe("ToModels", func() {
 		It("converts an eth log to a db model", func() {
-			models, err := converter.Convert([]types.Log{test_data.TendLogNote})
+			models, err := converter.ToModels([]types.Log{test_data.TendLogNote})
 
 			Expect(err).NotTo(HaveOccurred())
 			Expect(len(models)).To(Equal(1))
@@ -43,7 +43,7 @@ var _ = Describe("Tend TendConverter", func() {
 		It("returns an error if the log data is empty", func() {
 			emptyDataLog := test_data.TendLogNote
 			emptyDataLog.Data = []byte{}
-			_, err := converter.Convert([]types.Log{emptyDataLog})
+			_, err := converter.ToModels([]types.Log{emptyDataLog})
 
 			Expect(err).To(HaveOccurred())
 			Expect(err).To(MatchError("tend log note data is empty"))
@@ -52,7 +52,7 @@ var _ = Describe("Tend TendConverter", func() {
 		It("returns an error if the expected amount of topics aren't in the log", func() {
 			invalidLog := test_data.TendLogNote
 			invalidLog.Topics = []common.Hash{}
-			_, err := converter.Convert([]types.Log{invalidLog})
+			_, err := converter.ToModels([]types.Log{invalidLog})
 
 			Expect(err).To(MatchError("tend log does not contain expected topics"))
 		})

pkg/transformers/tend/integration_test.go

@@ -28,6 +28,7 @@ import (
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/test_data"
 	"github.com/vulcanize/vulcanizedb/test_config"
+	"github.com/vulcanize/vulcanizedb/pkg/transformers/tend"
 )
 
 // These test are marked as pending until the Flip contract is deployed to Kovan.
@@ -48,7 +49,7 @@ var _ = Describe("Integration tests", func() {
 		topic0 := common.HexToHash(shared.TendFunctionSignature)
 		topics := [][]common.Hash{{topic0}}
 
-		result, err := realFetcher.FetchLogs(shared.FlipperContractAddress, topics, test_data.FlipKickBlockNumber)
+		result, err := realFetcher.FetchLogs(tend.TendConfig.ContractAddresses, topics, test_data.FlipKickBlockNumber)
 		Expect(err).NotTo(HaveOccurred())
 
 		Expect(len(result) > 0).To(BeTrue())

pkg/transformers/tend/transformer.go

@@ -59,7 +59,7 @@ func (t TendTransformer) Execute() error {
 
 	log.Printf("Fetching tend event logs for %d headers \n", len(missingHeaders))
 	for _, header := range missingHeaders {
-		ethLogs, err := t.Fetcher.FetchLogs(config.ContractAddress, topics, header.BlockNumber)
+		ethLogs, err := t.Fetcher.FetchLogs(config.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			log.Println("Error fetching matching logs:", err)
 			return err
@@ -71,7 +71,7 @@ func (t TendTransformer) Execute() error {
 			}
 		}
 
-		models, err := t.Converter.Convert(ethLogs)
+		models, err := t.Converter.ToModels(ethLogs)
 		if err != nil {
 			log.Println("Error converting logs:", err)
 			return err

pkg/transformers/tend/transformer_test.go

@@ -75,7 +75,7 @@ var _ = Describe("Tend Transformer", func() {
 		Expect(err).NotTo(HaveOccurred())
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{blockNumber1, blockNumber2}))
 		Expect(fetcher.FetchedTopics).To(Equal(expectedTopics))
-		Expect(fetcher.FetchedContractAddress).To(Equal(shared.FlipperContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{tend.TendConfig.ContractAddresses, tend.TendConfig.ContractAddresses}))
 	})
 
 	It("returns an error if fetching logs fails", func() {

pkg/transformers/test_data/deal.go

@@ -43,6 +43,7 @@ var dealRawJson, _ = json.Marshal(DealLogNote)
 
 var DealModel = deal.DealModel{
 	BidId:            "123",
+	ContractAddress:  shared.FlipperContractAddress,
 	TransactionIndex: 74,
 	Raw:              dealRawJson,
 }

pkg/transformers/test_data/mocks/flip_kick/converter.go

@@ -22,15 +22,17 @@ import (
 )
 
 type MockFlipKickConverter struct {
-	ConverterContract string
+	ConverterContracts []string
-	ConverterAbi      string
+	ConverterAbi       string
-	LogsToConvert     []types.Log
+	LogsToConvert      []types.Log
-	EntitiesToConvert []flip_kick.FlipKickEntity
+	EntitiesToConvert  []flip_kick.FlipKickEntity
-	ConverterError    error
+	ConverterError     error
 }
 
-func (mfkc *MockFlipKickConverter) ToEntities(contractAddress string, contractAbi string, ethLogs []types.Log) ([]flip_kick.FlipKickEntity, error) {
+func (mfkc *MockFlipKickConverter) ToEntities(contractAbi string, ethLogs []types.Log) ([]flip_kick.FlipKickEntity, error) {
-	mfkc.ConverterContract = contractAddress
+	for _, log := range ethLogs {
+		mfkc.ConverterContracts = append(mfkc.ConverterContracts, log.Address.Hex())
+	}
 	mfkc.ConverterAbi = contractAbi
 	mfkc.LogsToConvert = append(mfkc.LogsToConvert, ethLogs...)
 	return []flip_kick.FlipKickEntity{test_data.FlipKickEntity}, mfkc.ConverterError

pkg/transformers/test_data/mocks/flop_kick/converter.go

@@ -21,16 +21,18 @@ import (
 )
 
 type MockConverter struct {
-	PassedContractAddress string
+	PassedContractAddresses []string
-	PassedContractABI     string
+	PassedContractABI       string
-	PassedLogs            []types.Log
+	PassedLogs              []types.Log
-	PassedEntities        []flop_kick.Entity
+	PassedEntities          []flop_kick.Entity
-	entityConverterError  error
+	entityConverterError    error
-	modelConverterError   error
+	modelConverterError     error
 }
 
-func (c *MockConverter) ToEntities(contractAddress, contractAbi string, ethLogs []types.Log) ([]flop_kick.Entity, error) {
+func (c *MockConverter) ToEntities(contractAbi string, ethLogs []types.Log) ([]flop_kick.Entity, error) {
-	c.PassedContractAddress = contractAddress
+	for _, log := range ethLogs {
+		c.PassedContractAddresses = append(c.PassedContractAddresses, log.Address.Hex())
+	}
 	c.PassedContractABI = contractAbi
 	c.PassedLogs = ethLogs
 

pkg/transformers/test_data/mocks/log_fetcher.go

@@ -20,15 +20,15 @@ import (
 )
 
 type MockLogFetcher struct {
-	FetchedContractAddress string
+	FetchedContractAddresses [][]string
-	FetchedTopics          [][]common.Hash
+	FetchedTopics            [][]common.Hash
-	FetchedBlocks          []int64
+	FetchedBlocks            []int64
-	fetcherError           error
+	fetcherError             error
-	FetchedLogs            []types.Log
+	FetchedLogs              []types.Log
 }
 
-func (mlf *MockLogFetcher) FetchLogs(contractAddress string, topics [][]common.Hash, blockNumber int64) ([]types.Log, error) {
+func (mlf *MockLogFetcher) FetchLogs(contractAddresses []string, topics [][]common.Hash, blockNumber int64) ([]types.Log, error) {
-	mlf.FetchedContractAddress = contractAddress
+	mlf.FetchedContractAddresses = append(mlf.FetchedContractAddresses, contractAddresses)
 	mlf.FetchedTopics = topics
 	mlf.FetchedBlocks = append(mlf.FetchedBlocks, blockNumber)
 

pkg/transformers/test_data/mocks/tend/converter.go

@@ -26,7 +26,7 @@ type MockTendConverter struct {
 	ConverterError error
 }
 
-func (c *MockTendConverter) Convert(ethLogs []types.Log) ([]tend.TendModel, error) {
+func (c *MockTendConverter) ToModels(ethLogs []types.Log) ([]tend.TendModel, error) {
 	c.LogsToConvert = append(c.LogsToConvert, ethLogs...)
 	return []tend.TendModel{test_data.TendModel}, c.ConverterError
 }

pkg/transformers/vat_init/config.go

@@ -19,7 +19,7 @@ import (
 )
 
 var VatInitConfig = shared.TransformerConfig{
-	ContractAddress:     shared.VatContractAddress,
+	ContractAddresses:   []string{shared.VatContractAddress},
 	ContractAbi:         shared.VatABI,
 	Topics:              []string{shared.VatInitSignature},
 	StartingBlockNumber: 0,

pkg/transformers/vat_init/transformer.go

@@ -55,7 +55,7 @@ func (transformer VatInitTransformer) Execute() error {
 	log.Printf("Fetching vat init event logs for %d headers \n", len(missingHeaders))
 	for _, header := range missingHeaders {
 		topics := [][]common.Hash{{common.HexToHash(shared.VatInitSignature)}}
-		matchingLogs, err := transformer.Fetcher.FetchLogs(VatInitConfig.ContractAddress, topics, header.BlockNumber)
+		matchingLogs, err := transformer.Fetcher.FetchLogs(VatInitConfig.ContractAddresses, topics, header.BlockNumber)
 		if err != nil {
 			return err
 		}

pkg/transformers/vat_init/transformer_test.go

@@ -75,7 +75,7 @@ var _ = Describe("Vat init transformer", func() {
 
 		Expect(err).NotTo(HaveOccurred())
 		Expect(fetcher.FetchedBlocks).To(Equal([]int64{1, 2}))
-		Expect(fetcher.FetchedContractAddress).To(Equal(vat_init.VatInitConfig.ContractAddress))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{vat_init.VatInitConfig.ContractAddresses, vat_init.VatInitConfig.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal([][]common.Hash{{common.HexToHash(shared.VatInitSignature)}}))
 	})