Nest packages under pkg

2017-11-06 13:06:03 -06:00
parent cf5f2f28db
commit f4a603efcb
36 changed files with 45 additions and 54 deletions
@@ -0,0 +1,27 @@
+package repositories
+
+import (
+	"github.com/8thlight/vulcanizedb/pkg/core"
+)
+
+type InMemory struct {
+	blocks map[int64]*core.Block
+}
+
+func NewInMemory() *InMemory {
+	return &InMemory{
+		blocks: make(map[int64]*core.Block),
+	}
+}
+
+func (repository *InMemory) CreateBlock(block core.Block) {
+	repository.blocks[block.Number] = &block
+}
+
+func (repository *InMemory) BlockCount() int {
+	return len(repository.blocks)
+}
+
+func (repository *InMemory) FindBlockByNumber(blockNumber int64) *core.Block {
+	return repository.blocks[blockNumber]
+}
@@ -0,0 +1,141 @@
+package repositories_test
+
+import (
+	"github.com/8thlight/vulcanizedb/pkg/core"
+	"github.com/8thlight/vulcanizedb/pkg/repositories"
+	_ "github.com/lib/pq"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("The In Memory Repository", func() {
+
+	Describe("Saving blocks", func() {
+		It("starts with no blocks", func() {
+			count := buildRepository().BlockCount()
+			Expect(count).Should(Equal(0))
+		})
+
+		It("increments the block count", func() {
+			block := core.Block{Number: 123}
+			repository := buildRepository()
+
+			repository.CreateBlock(block)
+
+			Expect(repository.BlockCount()).To(Equal(1))
+		})
+
+		It("saves the attributes of the block", func() {
+			blockNumber := int64(123)
+			gasLimit := int64(1000000)
+			gasUsed := int64(10)
+			blockHash := "x123"
+			blockParentHash := "x456"
+			blockNonce := "0x881db2ca900682e9a9"
+			blockTime := int64(1508981640)
+			uncleHash := "x789"
+			blockSize := int64(1000)
+			difficulty := int64(10)
+			block := core.Block{
+				Difficulty: difficulty,
+				GasLimit:   gasLimit,
+				GasUsed:    gasUsed,
+				Hash:       blockHash,
+				Nonce:      blockNonce,
+				Number:     blockNumber,
+				ParentHash: blockParentHash,
+				Size:       blockSize,
+				Time:       blockTime,
+				UncleHash:  uncleHash,
+			}
+
+			repository := buildRepository()
+			repository.CreateBlock(block)
+
+			savedBlock := repository.FindBlockByNumber(blockNumber)
+			Expect(savedBlock.Difficulty).To(Equal(difficulty))
+			Expect(savedBlock.GasLimit).To(Equal(gasLimit))
+			Expect(savedBlock.GasUsed).To(Equal(gasUsed))
+			Expect(savedBlock.Hash).To(Equal(blockHash))
+			Expect(savedBlock.Nonce).To(Equal(blockNonce))
+			Expect(savedBlock.Number).To(Equal(blockNumber))
+			Expect(savedBlock.ParentHash).To(Equal(blockParentHash))
+			Expect(savedBlock.Size).To(Equal(blockSize))
+			Expect(savedBlock.Time).To(Equal(blockTime))
+			Expect(savedBlock.UncleHash).To(Equal(uncleHash))
+		})
+
+		It("does not find a block when searching for a number that does not exist", func() {
+			repository := buildRepository()
+
+			savedBlock := repository.FindBlockByNumber(111)
+
+			Expect(savedBlock).To(BeNil())
+		})
+
+		It("saves one transaction associated to the block", func() {
+			block := core.Block{
+				Number:       123,
+				Transactions: []core.Transaction{{}},
+			}
+			repository := buildRepository()
+
+			repository.CreateBlock(block)
+
+			savedBlock := repository.FindBlockByNumber(123)
+			Expect(len(savedBlock.Transactions)).To(Equal(1))
+		})
+
+		It("saves two transactions associated to the block", func() {
+			block := core.Block{
+				Number:       123,
+				Transactions: []core.Transaction{{}, {}},
+			}
+			repository := buildRepository()
+
+			repository.CreateBlock(block)
+
+			savedBlock := repository.FindBlockByNumber(123)
+			Expect(len(savedBlock.Transactions)).To(Equal(2))
+		})
+
+		It("saves the attributes associated to a transaction", func() {
+			gasLimit := int64(5000)
+			gasPrice := int64(3)
+			nonce := uint64(10000)
+			to := "1234567890"
+			value := int64(10)
+
+			transaction := core.Transaction{
+				Hash:     "x1234",
+				GasPrice: gasPrice,
+				GasLimit: gasLimit,
+				Nonce:    nonce,
+				To:       to,
+				Value:    value,
+			}
+			block := core.Block{
+				Number:       123,
+				Transactions: []core.Transaction{transaction},
+			}
+			repository := buildRepository()
+
+			repository.CreateBlock(block)
+
+			savedBlock := repository.FindBlockByNumber(123)
+			Expect(len(savedBlock.Transactions)).To(Equal(1))
+			savedTransaction := savedBlock.Transactions[0]
+			Expect(savedTransaction.Hash).To(Equal(transaction.Hash))
+			Expect(savedTransaction.To).To(Equal(to))
+			Expect(savedTransaction.Nonce).To(Equal(nonce))
+			Expect(savedTransaction.GasLimit).To(Equal(gasLimit))
+			Expect(savedTransaction.GasPrice).To(Equal(gasPrice))
+			Expect(savedTransaction.Value).To(Equal(value))
+		})
+	})
+
+})
+
+func buildRepository() *repositories.InMemory {
+	return repositories.NewInMemory()
+}
@@ -0,0 +1,108 @@
+package repositories
+
+import (
+	"database/sql"
+
+	"github.com/8thlight/vulcanizedb/pkg/core"
+	"github.com/jmoiron/sqlx"
+	_ "github.com/lib/pq"
+)
+
+type Postgres struct {
+	Db *sqlx.DB
+}
+
+func NewPostgres(db *sqlx.DB) Postgres {
+	return Postgres{Db: db}
+}
+
+func (repository Postgres) FindBlockByNumber(blockNumber int64) *core.Block {
+	blockRows, _ := repository.Db.Query("SELECT id, block_number, block_gaslimit, block_gasused, block_time, block_difficulty, block_hash, block_nonce, block_parenthash, block_size, uncle_hash FROM blocks")
+	var savedBlocks []core.Block
+	for blockRows.Next() {
+		savedBlock := repository.loadBlock(blockRows)
+		savedBlocks = append(savedBlocks, savedBlock)
+	}
+	if len(savedBlocks) > 0 {
+		return &savedBlocks[0]
+	} else {
+		return nil
+	}
+}
+
+func (repository Postgres) BlockCount() int {
+	var count int
+	repository.Db.Get(&count, "SELECT COUNT(*) FROM blocks")
+	return count
+}
+
+func (repository Postgres) CreateBlock(block core.Block) {
+	insertedBlock := repository.Db.QueryRow(
+		"Insert INTO blocks "+
+			"(block_number, block_gaslimit, block_gasused, block_time, block_difficulty, block_hash, block_nonce, block_parenthash, block_size, uncle_hash) "+
+			"VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10) RETURNING id",
+		block.Number, block.GasLimit, block.GasUsed, block.Time, block.Difficulty, block.Hash, block.Nonce, block.ParentHash, block.Size, block.UncleHash)
+	var blockId int64
+	insertedBlock.Scan(&blockId)
+	repository.createTransactions(blockId, block.Transactions)
+}
+
+func (repository Postgres) createTransactions(blockId int64, transactions []core.Transaction) {
+	for _, transaction := range transactions {
+		repository.Db.MustExec("Insert INTO transactions "+
+			"(block_id, tx_hash, tx_nonce, tx_to, tx_gaslimit, tx_gasprice, tx_value) VALUES ($1, $2, $3, $4, $5, $6, $7)",
+			blockId, transaction.Hash, transaction.Nonce, transaction.To, transaction.GasLimit, transaction.GasPrice, transaction.Value)
+	}
+}
+
+func (repository Postgres) loadBlock(blockRows *sql.Rows) core.Block {
+	var blockId int64
+	var blockHash string
+	var blockNonce string
+	var blockNumber int64
+	var blockParentHash string
+	var blockSize int64
+	var blockTime float64
+	var difficulty int64
+	var gasLimit float64
+	var gasUsed float64
+	var uncleHash string
+	blockRows.Scan(&blockId, &blockNumber, &gasLimit, &gasUsed, &blockTime, &difficulty, &blockHash, &blockNonce, &blockParentHash, &blockSize, &uncleHash)
+	transactions := repository.loadTransactions(blockId)
+	return core.Block{
+		Difficulty:   difficulty,
+		GasLimit:     int64(gasLimit),
+		GasUsed:      int64(gasUsed),
+		Hash:         blockHash,
+		Nonce:        blockNonce,
+		Number:       blockNumber,
+		ParentHash:   blockParentHash,
+		Size:         blockSize,
+		Time:         int64(blockTime),
+		Transactions: transactions,
+		UncleHash:    uncleHash,
+	}
+}
+func (repository Postgres) loadTransactions(blockId int64) []core.Transaction {
+	transactionRows, _ := repository.Db.Query("SELECT tx_hash, tx_nonce, tx_to, tx_gaslimit, tx_gasprice, tx_value FROM transactions")
+	var transactions []core.Transaction
+	for transactionRows.Next() {
+		var hash string
+		var nonce uint64
+		var to string
+		var gasLimit int64
+		var gasPrice int64
+		var value int64
+		transactionRows.Scan(&hash, &nonce, &to, &gasLimit, &gasPrice, &value)
+		transaction := core.Transaction{
+			Hash:     hash,
+			Nonce:    nonce,
+			To:       to,
+			GasLimit: gasLimit,
+			GasPrice: gasPrice,
+			Value:    value,
+		}
+		transactions = append(transactions, transaction)
+	}
+	return transactions
+}
@@ -0,0 +1,159 @@
+package repositories_test
+
+import (
+	"github.com/8thlight/vulcanizedb/pkg/config"
+	"github.com/8thlight/vulcanizedb/pkg/core"
+	"github.com/8thlight/vulcanizedb/pkg/repositories"
+	"github.com/jmoiron/sqlx"
+	_ "github.com/lib/pq"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("The Postgres Repository", func() {
+
+	var db *sqlx.DB
+	var err error
+
+	BeforeEach(func() {
+		pgConfig := config.DbConnectionString(config.NewConfig("private").Database)
+		db, err = sqlx.Connect("postgres", pgConfig)
+		db.MustExec("DELETE FROM transactions")
+		db.MustExec("DELETE FROM blocks")
+	})
+
+	AfterEach(func() {
+		db.Close()
+	})
+
+	It("connects to the database", func() {
+		Expect(err).Should(BeNil())
+		Expect(db).ShouldNot(BeNil())
+	})
+
+	Describe("Saving blocks", func() {
+		It("starts with no blocks", func() {
+			count := repositories.NewPostgres(db).BlockCount()
+			Expect(count).Should(Equal(0))
+		})
+
+		It("increments the block count", func() {
+			block := core.Block{Number: 123}
+			repository := repositories.NewPostgres(db)
+
+			repository.CreateBlock(block)
+
+			Expect(repository.BlockCount()).To(Equal(1))
+		})
+
+		It("saves the attributes of the block", func() {
+			blockNumber := int64(123)
+			gasLimit := int64(1000000)
+			gasUsed := int64(10)
+			blockHash := "x123"
+			blockParentHash := "x456"
+			blockNonce := "0x881db2ca900682e9a9"
+			blockTime := int64(1508981640)
+			uncleHash := "x789"
+			blockSize := int64(1000)
+			difficulty := int64(10)
+			block := core.Block{
+				Difficulty: difficulty,
+				GasLimit:   gasLimit,
+				GasUsed:    gasUsed,
+				Hash:       blockHash,
+				Nonce:      blockNonce,
+				Number:     blockNumber,
+				ParentHash: blockParentHash,
+				Size:       blockSize,
+				Time:       blockTime,
+				UncleHash:  uncleHash,
+			}
+
+			repository := repositories.NewPostgres(db)
+
+			repository.CreateBlock(block)
+
+			savedBlock := repository.FindBlockByNumber(blockNumber)
+			Expect(savedBlock.Difficulty).To(Equal(difficulty))
+			Expect(savedBlock.GasLimit).To(Equal(gasLimit))
+			Expect(savedBlock.GasUsed).To(Equal(gasUsed))
+			Expect(savedBlock.Hash).To(Equal(blockHash))
+			Expect(savedBlock.Nonce).To(Equal(blockNonce))
+			Expect(savedBlock.Number).To(Equal(blockNumber))
+			Expect(savedBlock.ParentHash).To(Equal(blockParentHash))
+			Expect(savedBlock.Size).To(Equal(blockSize))
+			Expect(savedBlock.Time).To(Equal(blockTime))
+			Expect(savedBlock.UncleHash).To(Equal(uncleHash))
+		})
+
+		It("does not find a block when searching for a number that does not exist", func() {
+			repository := repositories.NewPostgres(db)
+
+			savedBlock := repository.FindBlockByNumber(111)
+
+			Expect(savedBlock).To(BeNil())
+		})
+
+		It("saves one transaction associated to the block", func() {
+			block := core.Block{
+				Number:       123,
+				Transactions: []core.Transaction{{}},
+			}
+			repository := repositories.NewPostgres(db)
+
+			repository.CreateBlock(block)
+
+			savedBlock := repository.FindBlockByNumber(123)
+			Expect(len(savedBlock.Transactions)).To(Equal(1))
+		})
+
+		It("saves two transactions associated to the block", func() {
+			block := core.Block{
+				Number:       123,
+				Transactions: []core.Transaction{{}, {}},
+			}
+			repository := repositories.NewPostgres(db)
+
+			repository.CreateBlock(block)
+
+			savedBlock := repository.FindBlockByNumber(123)
+			Expect(len(savedBlock.Transactions)).To(Equal(2))
+		})
+
+		It("saves the attributes associated to a transaction", func() {
+			gasLimit := int64(5000)
+			gasPrice := int64(3)
+			nonce := uint64(10000)
+			to := "1234567890"
+			value := int64(10)
+
+			transaction := core.Transaction{
+				Hash:     "x1234",
+				GasPrice: gasPrice,
+				GasLimit: gasLimit,
+				Nonce:    nonce,
+				To:       to,
+				Value:    value,
+			}
+			block := core.Block{
+				Number:       123,
+				Transactions: []core.Transaction{transaction},
+			}
+			repository := repositories.NewPostgres(db)
+
+			repository.CreateBlock(block)
+
+			savedBlock := repository.FindBlockByNumber(123)
+			Expect(len(savedBlock.Transactions)).To(Equal(1))
+			savedTransaction := savedBlock.Transactions[0]
+			Expect(savedTransaction.Hash).To(Equal(transaction.Hash))
+			Expect(savedTransaction.To).To(Equal(to))
+			Expect(savedTransaction.Nonce).To(Equal(nonce))
+			Expect(savedTransaction.GasLimit).To(Equal(gasLimit))
+			Expect(savedTransaction.GasPrice).To(Equal(gasPrice))
+			Expect(savedTransaction.Value).To(Equal(value))
+		})
+	})
+
+})
@@ -0,0 +1,13 @@
+package repositories_test
+
+import (
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+
+	"testing"
+)
+
+func TestRepositories(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Repositories Suite")
+}
@@ -0,0 +1,7 @@
+package repositories
+
+import "github.com/8thlight/vulcanizedb/pkg/core"
+
+type Repository interface {
+	CreateBlock(block core.Block)
+}