blockchain initial commit

Author: alfg

LICENSE

@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Alf
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

address.go

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+package blockchain
+
+import (
+	"fmt"
+	"strings"
+)
+
+type Address struct {
+	Hash160       string `json:"hash160"`
+	Address       string `json:"address"`
+	NTx           int    `json:"n_tx"`
+	TotalReceived int    `json:"total_received"`
+	TotalSent     int    `json:"total_sent"`
+	FinalBalance  int    `json:"final_balance"`
+	Txs           []*Tx  `json:"txs"`
+}
+
+type MultiAddr struct {
+	Addresses []*Address `json:"addresses"`
+	Txs       []*Tx      `json:"txs"`
+}
+
+type Tx struct {
+	Result      int       `json:"result"`
+	Ver         int       `json:"ver"`
+	Size        int       `json:"size"`
+	Inputs      []*Inputs `json:"inputs"`
+	Time        int       `json:"time"`
+	BlockHeight int       `json:"block_height"`
+	TxIndex     int       `json:"tx_index"`
+	VinSz       int       `json:"vin_sz"`
+	Hash        string    `json:"hash"`
+	VoutSz      int       `json:"vout_sz"`
+	RelayedBy   string    `json:"relayed_by"`
+	Out         []*Out    `json:"out"`
+}
+
+type Inputs struct {
+	Sequence int      `json:"sequence"`
+	Script   string   `json:"script"`
+	PrevOut  *PrevOut `json:"prev_out"`
+}
+
+type PrevOut struct {
+	Spent   bool   `json:"spent"`
+	TxIndex int    `json:"tx_index"`
+	Type    int    `json:"type"`
+	Addr    string `json:"addr"`
+	Value   int    `json:"value"`
+	N       int    `json:"n"`
+	Script  string `json:"script"`
+}
+
+type Out struct {
+	Spent   bool   `json:"spent"`
+	TxIndex int    `json:"tx_index"`
+	Type    int    `json:"type"`
+	Addr    string `json:"addr"`
+	Value   int    `json:"value"`
+	N       int    `json:"n"`
+	Script  string `json:"script"`
+}
+
+func (c *Client) GetAddress(address string) (*Address, error) {
+	rsp := &Address{}
+	var path = "/address/" + address
+	e := c.loadResponse(path, rsp, true)
+
+	if e != nil {
+		fmt.Print(e)
+	}
+	return rsp, e
+}
+
+func (c *Client) GetAddresses(addresses []string) (*MultiAddr, error) {
+	rsp := &MultiAddr{}
+	var path = "/multiaddr?active=" + strings.Join(addresses, "|")
+	e := c.loadResponse(path, rsp, false)
+
+	if e != nil {
+		fmt.Print(e)
+	}
+	return rsp, e
+}

address_test.go

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+package blockchain
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestGetAddress(t *testing.T) {
+	fmt.Println("===== TESTING ADDRESS =====")
+
+	c, e := New()
+	resp, e := c.GetAddress("162FjqU7RYdojnejCDe6zrPDUpaLcv9Hhq")
+	if e != nil {
+		fmt.Print(e)
+	}
+
+	fmt.Println(resp.Hash160)
+	fmt.Println(resp.Address)
+	fmt.Println(resp.NTx)
+	fmt.Println(resp.TotalReceived)
+	fmt.Println(resp.TotalSent)
+	fmt.Println(resp.FinalBalance)
+
+	for i := range resp.Txs {
+		fmt.Println(resp.Txs[i].Result)
+
+		for j := range resp.Txs[i].Inputs {
+			fmt.Println(resp.Txs[i].Inputs[j].Sequence)
+			fmt.Println(resp.Txs[i].Inputs[j].PrevOut.Spent)
+		}
+	}
+}
+
+func TestGetAddresses(t *testing.T) {
+	fmt.Println("===== TESTING ADDRESSES =====")
+
+	c, e := New()
+	if e != nil {
+		fmt.Print(e)
+	}
+
+	addresses := []string{
+		"162FjqU7RYdojnejCDe6zrPDUpaLcv9Hhq",
+		"1K3Vs8tPu2YkAoWmrkjUQVJuxr7wgPP3Wf"}
+
+	resp, _ := c.GetAddresses(addresses)
+	for i := range resp.Addresses {
+		fmt.Println(resp.Addresses[i].Address)
+
+		for j := range resp.Txs[i].Inputs {
+			fmt.Println(resp.Txs[i].Inputs[j].Sequence)
+			fmt.Println(resp.Txs[i].Inputs[j].PrevOut.Spent)
+		}
+	}
+}

block.go

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+package blockchain
+
+import (
+	"fmt"
+)
+
+type Block struct {
+	Hash         string `json:"hash"`
+	Ver          int    `json:"ver"`
+	PrevBlock    string `json:"prev_block"`
+	MrklRoot     string `json:"mrkl_root"`
+	Time         int    `json:"time"`
+	Bits         int    `json:"bits"`
+	Nonce        int    `json:"nonce"`
+	NTx          int    `json:"n_tx"`
+	Size         int    `json:"size"`
+	BlockIndex   int    `json:"block_index"`
+	MainChain    bool   `json:"main_chain"`
+	Height       int    `json:"height"`
+	ReceivedTime int    `json:"recieved_time"`
+	RelayedBy    string `json:"relayed_by"`
+	Tx           []*Tx  `json:"tx"`
+	TxIndexes    []int  `json:"txIndexes"`
+}
+
+type BlockHeight struct {
+	Blocks []*Block `json:"blocks"`
+}
+
+func (c *Client) GetBlock(block string) (*Block, error) {
+	rsp := &Block{}
+	var path = "/rawblock/" + block
+	e := c.loadResponse(path, rsp, true)
+
+	if e != nil {
+		fmt.Print(e)
+	}
+	return rsp, e
+}
+
+func (c *Client) GetBlockHeight(blockHeight string) (*BlockHeight, error) {
+	rsp := &BlockHeight{}
+	var path = "/block-height/" + blockHeight
+	e := c.loadResponse(path, rsp, true)
+
+	if e != nil {
+		fmt.Print(e)
+	}
+	return rsp, e
+}
+
+func (c *Client) GetLatestBlock() (*Block, error) {
+	rsp := &Block{}
+	var path = "/latestblock"
+	e := c.loadResponse(path, rsp, false)
+
+	if e != nil {
+		fmt.Print(e)
+	}
+	return rsp, e
+}

block_test.go

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+package blockchain
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestGetBlock(t *testing.T) {
+	fmt.Println("===== TESTING BLOCK =====")
+
+	c, e := New()
+	resp, e := c.GetBlock("0000000000000bae09a7a393a8acded75aa67e46cb81f7acaa5ad94f9eacd103")
+	if e != nil {
+		fmt.Print(e)
+	}
+
+	fmt.Println(resp.Hash)
+
+	for i := range resp.Tx {
+
+		for j := range resp.Tx[i].Inputs {
+			fmt.Println(resp.Tx[i].Inputs[j].Sequence)
+		}
+	}
+}
+
+func TestGetBlockHeight(t *testing.T) {
+	fmt.Println("===== TESTING BLOCK HEIGHT =====")
+
+	c, e := New()
+	resp, e := c.GetBlockHeight("160778")
+	if e != nil {
+		fmt.Print(e)
+	}
+
+	for i := range resp.Blocks {
+		fmt.Println(resp.Blocks[i].Hash)
+		fmt.Println(resp.Blocks[i].Time)
+	}
+}
+
+func TestGetLatestBlock(t *testing.T) {
+	fmt.Println("===== TESTING LATEST BLOCK =====")
+
+	c, e := New()
+	resp, e := c.GetLatestBlock()
+	if e != nil {
+		fmt.Print(e)
+	}
+
+	fmt.Println(resp.Hash)
+	fmt.Println(resp.Height)
+
+	for _, v := range resp.TxIndexes {
+		fmt.Println(v)
+	}
+}

chart.go

@@ -0,0 +1,25 @@
+package blockchain
+
+import (
+	"fmt"
+)
+
+type Chart struct {
+	Values []*Value `json:"values"`
+}
+
+type Value struct {
+	X int `json:"x"`
+	Y int `json:"y"`
+}
+
+func (c *Client) GetChart(chartType string) (*Chart, error) {
+	rsp := &Chart{}
+	var path = "/charts/" + chartType
+	e := c.loadResponse(path, rsp, true)
+
+	if e != nil {
+		fmt.Print(e)
+	}
+	return rsp, e
+}

chart_test.go

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+package blockchain
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestGetChart(t *testing.T) {
+	fmt.Println("===== TESTING CHART =====")
+
+	c, e := New()
+	resp, e := c.GetChart("total-bitcoins")
+	if e != nil {
+		fmt.Print(e)
+	}
+
+	for i := range resp.Values {
+		fmt.Println(resp.Values[i].X)
+	}
+}

client.go

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+package blockchain
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+)
+
+const (
+	API_ROOT = "https://blockchain.info/"
+)
+
+type Client struct {
+	*http.Client
+}
+
+func (c *Client) loadResponse(path string, i interface{}, formatJson bool) error {
+	full_path := API_ROOT + path
+	if formatJson {
+		full_path = API_ROOT + path + "/?format=json"
+	}
+
+	fmt.Println("querying..." + full_path)
+	rsp, e := c.Get(full_path)
+	if e != nil {
+		return e
+	}
+
+	defer rsp.Body.Close()
+
+	b, e := ioutil.ReadAll(rsp.Body)
+	if e != nil {
+		return e
+	}
+	if rsp.Status[0] != '2' {
+		return fmt.Errorf("expected status 2xx, got %s: %s", rsp.Status, string(b))
+	}
+
+	return json.Unmarshal(b, &i)
+}
+
+func New() (*Client, error) {
+	return &Client{Client: &http.Client{}}, nil
+}