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Merge pull request #32 from 8thlight/transactions

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Transactions
This commit is contained in:
ericmeyer 2017-10-31 09:24:07 -05:00 committed by GitHub
commit 703acb99fb
11 changed files with 286 additions and 70 deletions
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28
core/block.go
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@ -6,40 +6,24 @@ import (
"github.com/ethereum/go-ethereum/core/types"
)
//Our block representation
type Block struct {
Number *big.Int
GasLimit *big.Int
GasUsed *big.Int
Time *big.Int
NumberOfTransactions int
Transactions []Transaction
}
//Our Block to DB
func BlockToBlockRecord(block Block) *BlockRecord {
return &BlockRecord{
BlockNumber: block.Number.Int64(),
GasLimit: block.GasLimit.Int64(),
GasUsed: block.GasUsed.Int64(),
Time: block.Time.Int64(),
}
}
//DB block representation
type BlockRecord struct {
BlockNumber int64 `db:"block_number"`
GasLimit int64 `db:"block_gaslimit"`
GasUsed int64 `db:"block_gasused"`
Time int64 `db:"block_time"`
}
//Geth Block to Ours
func GethBlockToCoreBlock(gethBlock *types.Block) Block {
transactions := []Transaction{}
for _, gethTransaction := range gethBlock.Transactions() {
transactions = append(transactions, gethTransToCoreTrans(gethTransaction))
}
return Block{
Number: gethBlock.Number(),
GasLimit: gethBlock.GasLimit(),
GasUsed: gethBlock.GasUsed(),
Time: gethBlock.Time(),
NumberOfTransactions: len(gethBlock.Transactions()),
Transactions: transactions,
}
}

24
core/block_test.go
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@ -1,24 +0,0 @@
package core
import (
"math/big"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("Converting core.Block to DB record", func() {
It("Converts core.Block to BlockRecord", func() {
blockNumber := big.NewInt(1)
gasLimit := big.NewInt(100000)
gasUsed := big.NewInt(10)
blockTime := big.NewInt(1508981640)
block := Block{Number: blockNumber, GasLimit: gasLimit, GasUsed: gasUsed, Time: blockTime}
blockRecord := BlockToBlockRecord(block)
Expect(blockRecord.BlockNumber).To(Equal(int64(1)))
Expect(blockRecord.GasLimit).To(Equal(int64(100000)))
Expect(blockRecord.GasUsed).To(Equal(int64(10)))
})
})

18
core/blockchain_db_observer.go
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@ -10,10 +10,18 @@ type BlockchainDBObserver struct {
}
func (observer BlockchainDBObserver) NotifyBlockAdded(block Block) {
blockRecord := BlockToBlockRecord(block)
observer.Db.NamedExec(
"INSERT INTO blocks "+
observer.Db.MustExec("Insert INTO blocks "+
"(block_number, block_gaslimit, block_gasused, block_time) "+
"VALUES (:block_number, :block_gaslimit, :block_gasused, :block_time)", blockRecord)
//observer.Db.MustExec("Insert INTO blocks (block_number) VALUES ($1)", block.Number.Int64())
"VALUES ($1, $2, $3, $4)",
block.Number.Int64(), block.GasLimit.Int64(), block.GasUsed.Int64(), block.Time.Int64())
for _, transaction := range block.Transactions {
observer.saveTransaction(transaction)
}
}
func (observer BlockchainDBObserver) saveTransaction(transaction Transaction) {
observer.Db.MustExec("Insert INTO transactions "+
"(tx_hash, tx_nonce, tx_to, tx_gaslimit, tx_gasprice, tx_value) VALUES ($1, $2, $3, $4, $5, $6)",
transaction.Hash, transaction.Nonce, transaction.To, transaction.GasLimit, transaction.GasPrice, transaction.Value)
}

90
core/blockchain_db_observer_test.go
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@ -24,13 +24,14 @@ var _ = Describe("Saving blocks to the database", func() {
var db *sqlx.DB
var err error
BeforeEach(func() {
pgConfig := fmt.Sprintf(
"host=%s port=%d user=%s password=%s dbname=%s sslmode=disable",
host, port, user, password, dbname)
BeforeEach(func() {
db, err = sqlx.Connect("postgres", pgConfig)
db.MustExec("DELETE FROM blocks")
db.MustExec("DELETE FROM transactions")
})
It("implements the observer interface", func() {
@ -51,25 +52,100 @@ var _ = Describe("Saving blocks to the database", func() {
})
It("inserts a block", func() {
// setup a block in memory
blockNumber := big.NewInt(1)
gasLimit := big.NewInt(1000000)
gasUsed := big.NewInt(10)
blockTime := big.NewInt(1508981640)
block := core.Block{Number: blockNumber, GasLimit: gasLimit, GasUsed: gasUsed, Time: blockTime}
// save the block to the database
observer := core.BlockchainDBObserver{Db: db}
observer.NotifyBlockAdded(block)
rows, err := db.Queryx("SELECT * FROM blocks")
// find the saved block
rows, err := db.Query("SELECT block_number, block_gaslimit, block_gasused, block_time FROM blocks")
Expect(err).To(BeNil())
var savedBlocks []core.BlockRecord
var savedBlocks []core.Block
for rows.Next() {
var savedBlock core.BlockRecord
rows.StructScan(&savedBlock)
var blockNumber int64
var blockTime float64
var gasLimit float64
var gasUsed float64
rows.Scan(&blockNumber, &gasLimit, &gasUsed, &blockTime)
savedBlock := core.Block{
GasUsed: big.NewInt(int64(gasUsed)),
GasLimit: big.NewInt(int64(gasLimit)),
Number: big.NewInt(blockNumber),
Time: big.NewInt(int64(blockTime)),
}
savedBlocks = append(savedBlocks, savedBlock)
}
// assert against the attributes
Expect(len(savedBlocks)).To(Equal(1))
Expect(savedBlocks[0].BlockNumber)
Expect(savedBlocks[0].Number.Int64()).To(Equal(blockNumber.Int64()))
Expect(savedBlocks[0].GasLimit.Int64()).To(Equal(gasLimit.Int64()))
Expect(savedBlocks[0].GasUsed.Int64()).To(Equal(gasUsed.Int64()))
Expect(savedBlocks[0].Time).To(Equal(blockTime))
})
var _ = Describe("Saving transactions to the database", func() {
It("inserts a transaction", func() {
gasLimit := int64(5000)
gasPrice := int64(3)
nonce := uint64(10000)
to := "1234567890"
value := int64(10)
txRecord := core.Transaction{
Hash: "x1234",
GasPrice: gasPrice,
GasLimit: gasLimit,
Nonce: nonce,
To: to,
Value: value,
}
blockNumber := big.NewInt(1)
gasUsed := big.NewInt(10)
blockTime := big.NewInt(1508981640)
block := core.Block{Number: blockNumber, GasLimit: big.NewInt(gasLimit), GasUsed: gasUsed, Time: blockTime, Transactions: []core.Transaction{txRecord}}
observer := core.BlockchainDBObserver{Db: db}
observer.NotifyBlockAdded(block)
rows, err := db.Query("SELECT tx_hash, tx_nonce, tx_to, tx_gaslimit, tx_gasprice, tx_value FROM transactions")
Expect(err).To(BeNil())
var savedTransactions []core.Transaction
for rows.Next() {
var dbHash string
var dbNonce uint64
var dbTo string
var dbGasLimit int64
var dbGasPrice int64
var dbValue int64
rows.Scan(&dbHash, &dbNonce, &dbTo, &dbGasLimit, &dbGasPrice, &dbValue)
savedTransaction := core.Transaction{
Hash: dbHash,
Nonce: dbNonce,
To: dbTo,
GasLimit: dbGasLimit,
GasPrice: dbGasPrice,
Value: dbValue,
}
savedTransactions = append(savedTransactions, savedTransaction)
}
Expect(len(savedTransactions)).To(Equal(1))
savedTransaction := savedTransactions[0]
Expect(savedTransaction.Hash).To(Equal(txRecord.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))
})
})
})

2
core/blockchain_logging_observer.go
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@ -12,5 +12,5 @@ func (blockchainObserver BlockchainLoggingObserver) NotifyBlockAdded(block Block
"\tTime: %v\n"+
"\tGas Limit: %d\n"+
"\tGas Used: %d\n"+
"\tNumber of Transactions %d\n", block.Number, time.Unix(block.Time.Int64(), 0), block.GasLimit, block.GasUsed, block.NumberOfTransactions)
"\tNumber of Transactions %d\n", block.Number, time.Unix(block.Time.Int64(), 0), block.GasLimit, block.GasUsed, len(block.Transactions))
}

75
core/converting_a_geth_block_test.go Normal file
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@ -0,0 +1,75 @@
package core_test
import (
"math/big"
"github.com/8thlight/vulcanizedb/core"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("Conversion of GethBlock to core.Block", func() {
It("converts basic Block metada", func() {
blockNumber := big.NewInt(1)
gasUsed := big.NewInt(100000)
gasLimit := big.NewInt(100000)
time := big.NewInt(140000000)
header := types.Header{Number: blockNumber, GasUsed: gasUsed, Time: time, GasLimit: gasLimit}
block := types.NewBlock(&header, []*types.Transaction{}, []*types.Header{}, []*types.Receipt{})
gethBlock := core.GethBlockToCoreBlock(block)
Expect(gethBlock.Number).To(Equal(blockNumber))
Expect(gethBlock.GasUsed).To(Equal(gasUsed))
Expect(gethBlock.GasLimit).To(Equal(gasLimit))
Expect(gethBlock.Time).To(Equal(time))
})
Describe("the converted transations", func() {
It("is empty", func() {
header := types.Header{}
block := types.NewBlock(&header, []*types.Transaction{}, []*types.Header{}, []*types.Receipt{})
coreBlock := core.GethBlockToCoreBlock(block)
Expect(len(coreBlock.Transactions)).To(Equal(0))
})
It("converts a single transations", func() {
nonce := uint64(10000)
header := types.Header{}
to := common.Address{1}
amount := big.NewInt(10)
gasLimit := big.NewInt(5000)
gasPrice := big.NewInt(3)
payload := []byte("1234")
gethTransaction := types.NewTransaction(nonce, to, amount, gasLimit, gasPrice, payload)
gethBlock := types.NewBlock(&header, []*types.Transaction{gethTransaction}, []*types.Header{}, []*types.Receipt{})
coreBlock := core.GethBlockToCoreBlock(gethBlock)
Expect(len(coreBlock.Transactions)).To(Equal(1))
coreTransaction := coreBlock.Transactions[0]
Expect(coreTransaction.Data).To(Equal(gethTransaction.Data()))
Expect(coreTransaction.To).To(Equal(gethTransaction.To().Hex()))
Expect(coreTransaction.GasLimit).To(Equal(gethTransaction.Gas().Int64()))
Expect(coreTransaction.GasPrice).To(Equal(gethTransaction.GasPrice().Int64()))
Expect(coreTransaction.Value).To(Equal(gethTransaction.Value().Int64()))
Expect(coreTransaction.Nonce).To(Equal(gethTransaction.Nonce()))
})
It("has an empty to field when transaction creates a new contract", func() {
gethTransaction := types.NewContractCreation(uint64(10000), big.NewInt(10), big.NewInt(5000), big.NewInt(3), []byte("1234"))
gethBlock := types.NewBlock(&types.Header{}, []*types.Transaction{gethTransaction}, []*types.Header{}, []*types.Receipt{})
coreBlock := core.GethBlockToCoreBlock(gethBlock)
coreTransaction := coreBlock.Transactions[0]
Expect(coreTransaction.To).To(Equal(""))
})
})
})

1
core/geth_blockchain.go
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@ -20,7 +20,6 @@ func NewGethBlockchain(ipcPath string) *GethBlockchain {
fmt.Printf("Creating Geth Blockchain to: %s\n", ipcPath)
blockchain := GethBlockchain{}
client, _ := ethclient.Dial(ipcPath)
// TODO: handle error gracefully
blockchain.client = client
return &blockchain
}

38
core/transaction.go Normal file
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@ -0,0 +1,38 @@
package core
import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
)
type Transaction struct {
Hash string
Data []byte
Nonce uint64
To string
GasLimit int64
GasPrice int64
Value int64
}
func gethTransToCoreTrans(transaction *types.Transaction) Transaction {
to := transaction.To()
toHex := convertTo(to)
return Transaction{
Hash: transaction.Hash().Hex(),
Data: transaction.Data(),
Nonce: transaction.Nonce(),
To: toHex,
GasLimit: transaction.Gas().Int64(),
GasPrice: transaction.GasPrice().Int64(),
Value: transaction.Value().Int64(),
}
}
func convertTo(to *common.Address) string {
if to == nil {
return ""
} else {
return to.Hex()
}
}

1
migrations/1509119369_initial_transaction_table.down.sql Normal file
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@ -0,0 +1 @@
DROP TABLE transactions

10
migrations/1509119369_initial_transaction_table.up.sql Normal file
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@ -0,0 +1,10 @@
CREATE TABLE transactions
(
id SERIAL PRIMARY KEY,
tx_hash VARCHAR(66),
tx_nonce NUMERIC,
tx_to varchar(66),
tx_gaslimit NUMERIC,
tx_gasprice NUMERIC,
tx_value NUMERIC
)

49
migrations/schema.sql
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@ -76,6 +76,40 @@ CREATE TABLE schema_migrations (
);
--
-- Name: transactions; Type: TABLE; Schema: public; Owner: -
--
CREATE TABLE transactions (
id integer NOT NULL,
tx_hash character varying(66),
tx_nonce numeric,
tx_to character varying(66),
tx_gaslimit numeric,
tx_gasprice numeric,
tx_value numeric
);
--
-- Name: transactions_id_seq; Type: SEQUENCE; Schema: public; Owner: -
--
CREATE SEQUENCE transactions_id_seq
START WITH 1
INCREMENT BY 1
NO MINVALUE
NO MAXVALUE
CACHE 1;
--
-- Name: transactions_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
--
ALTER SEQUENCE transactions_id_seq OWNED BY transactions.id;
--
-- Name: blocks id; Type: DEFAULT; Schema: public; Owner: -
--
@ -83,6 +117,13 @@ CREATE TABLE schema_migrations (
ALTER TABLE ONLY blocks ALTER COLUMN id SET DEFAULT nextval('blocks_id_seq'::regclass);
--
-- Name: transactions id; Type: DEFAULT; Schema: public; Owner: -
--
ALTER TABLE ONLY transactions ALTER COLUMN id SET DEFAULT nextval('transactions_id_seq'::regclass);
--
-- Name: blocks blocks_pkey; Type: CONSTRAINT; Schema: public; Owner: -
--
@ -99,6 +140,14 @@ ALTER TABLE ONLY schema_migrations
ADD CONSTRAINT schema_migrations_pkey PRIMARY KEY (version);
--
-- Name: transactions transactions_pkey; Type: CONSTRAINT; Schema: public; Owner: -
--
ALTER TABLE ONLY transactions
ADD CONSTRAINT transactions_pkey PRIMARY KEY (id);
--
-- PostgreSQL database dump complete
--