Added fields for: Time, Gas Limit, and Gas Used

core/block.go

@@ -1,8 +1,45 @@
 package core
 
-import "math/big"
+import (
+	"math/big"
 
+	"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
 }
+
+//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 {
+	return Block{
+		Number:               gethBlock.Number(),
+		GasLimit:             gethBlock.GasLimit(),
+		GasUsed:              gethBlock.GasUsed(),
+		Time:                 gethBlock.Time(),
+		NumberOfTransactions: len(gethBlock.Transactions()),
+	}
+}

core/block_test.go

@@ -0,0 +1,24 @@
+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)))
+
+	})
+})

core/blockchain_db_observer.go

@@ -5,15 +5,15 @@ import (
 	_ "github.com/lib/pq"
 )
 
-type BlockRecord struct {
-	BlockNumber int64 `db:"block_number"`
-}
-
 type BlockchainDBObserver struct {
 	Db *sqlx.DB
 }
 
 func (observer BlockchainDBObserver) NotifyBlockAdded(block Block) {
-	observer.Db.NamedExec("INSERT INTO blocks (block_number) VALUES (:block_number)", &BlockRecord{BlockNumber: block.Number.Int64()})
+	blockRecord := BlockToBlockRecord(block)
+	observer.Db.NamedExec(
+		"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())
 }

core/blockchain_db_observer_test.go

@@ -51,7 +51,11 @@ var _ = Describe("Saving blocks to the database", func() {
 	})
 
 	It("inserts a block", func() {
-		block := core.Block{Number: big.NewInt(1)}
+		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}
 
 		observer := core.BlockchainDBObserver{Db: db}
 		observer.NotifyBlockAdded(block)
@@ -64,9 +68,8 @@ var _ = Describe("Saving blocks to the database", func() {
 			rows.StructScan(&savedBlock)
 			savedBlocks = append(savedBlocks, savedBlock)
 		}
-
 		Expect(len(savedBlocks)).To(Equal(1))
-		Expect(savedBlocks[0].BlockNumber).To(Equal(int64(1)))
+		Expect(savedBlocks[0].BlockNumber)
 	})
 
 })

core/blockchain_logging_observer.go

@@ -1,9 +1,16 @@
 package core
 
-import "fmt"
+import (
+	"fmt"
+	"time"
+)
 
 type BlockchainLoggingObserver struct{}
 
 func (blockchainObserver BlockchainLoggingObserver) NotifyBlockAdded(block Block) {
-	fmt.Printf("New block was added: %d, %d\n", block.Number, block.NumberOfTransactions)
+	fmt.Printf("New block was added: %d\n"+
+		"\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)
 }

core/geth_blockchain.go

@@ -2,11 +2,12 @@ package core
 
 import (
 	"fmt"
+	"reflect"
+
 	"github.com/ethereum/go-ethereum"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/ethclient"
 	"golang.org/x/net/context"
-	"reflect"
 )
 
 type GethBlockchain struct {
@@ -24,20 +25,13 @@ func NewGethBlockchain(ipcPath string) *GethBlockchain {
 	return &blockchain
 }
 
-func (blockchain GethBlockchain) notifyObservers(getBlock *types.Block) {
-	block := convertBlock(getBlock)
+func (blockchain GethBlockchain) notifyObservers(gethBlock *types.Block) {
+	block := GethBlockToCoreBlock(gethBlock)
 	for _, observer := range blockchain.observers {
 		observer.NotifyBlockAdded(block)
 	}
 }
 
-func convertBlock(gethBlock *types.Block) Block {
-	return Block{
-		Number:               gethBlock.Number(),
-		NumberOfTransactions: len(gethBlock.Transactions()),
-	}
-}
-
 func (blockchain *GethBlockchain) RegisterObserver(observer BlockchainObserver) {
 	fmt.Printf("Registering observer: %v\n", reflect.TypeOf(observer))
 	blockchain.observers = append(blockchain.observers, observer)

migrations/1508965325_add_columns_to_blocks.down.sql

@@ -0,0 +1,5 @@
+ALTER TABLE blocks
+  DROP COLUMN block_gaslimit,
+  DROP COLUMN block_gasused,
+  DROP COLUMN block_time;
+

migrations/1508965325_add_columns_to_blocks.up.sql

@@ -0,0 +1,4 @@
+ALTER TABLE blocks
+  ADD COLUMN block_gaslimit DOUBLE PRECISION,
+  ADD COLUMN block_gasused DOUBLE PRECISION,
+  ADD COLUMN block_time DOUBLE PRECISION;

migrations/schema.sql

@@ -39,7 +39,10 @@ SET default_with_oids = false;
 --
 
 CREATE TABLE blocks (
-    block_number bigint
+    block_number bigint,
+    block_gaslimit double precision,
+    block_gasused double precision,
+    block_time double precision
 );