yuxh/gearman-go
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This commit is contained in:
Xing Xing 2013-08-29 18:08:05 +08:00
parent e5c30068cd
commit 4997e30a77
10 changed files with 170 additions and 207 deletions
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107
client/client.go
View File

@ -6,10 +6,10 @@
package client
import (
"github.com/mikespook/golib/idgen"
"io"
"net"
"sync"
"github.com/mikespook/golib/idgen"
)
/*
@ -21,14 +21,14 @@ handle := c.Do("foobar", []byte("data here"), JOB_LOW | JOB_BG)
*/
type Client struct {
net, addr string
respHandler map[string]ResponseHandler
createdHandler ResponseHandler
in chan []byte
isConn bool
conn net.Conn
mutex sync.RWMutex
ErrorHandler ErrorHandler
net, addr string
respHandler map[string]ResponseHandler
innerHandler map[string]ResponseHandler
in chan []byte
isConn bool
conn net.Conn
mutex sync.RWMutex
ErrorHandler ErrorHandler
IdGen idgen.IdGen
}
@ -39,10 +39,12 @@ type Client struct {
// client, err := client.New("127.0.0.1:4730")
func New(net, addr string) (client *Client, err error) {
client = &Client{
net: net,
addr: addr,
net: net,
addr: addr,
respHandler: make(map[string]ResponseHandler, QUEUE_SIZE),
in: make(chan []byte, QUEUE_SIZE),
innerHandler: make(map[string]ResponseHandler, QUEUE_SIZE),
in: make(chan []byte, QUEUE_SIZE),
IdGen: idgen.NewObjectId(),
}
if err = client.connect(); err != nil {
return
@ -119,14 +121,14 @@ func (client *Client) readLoop() {
// decode data & process it
func (client *Client) processLoop() {
var resp *response
var resp *Response
var l int
var err error
var data, leftdata []byte
for data = range client.in {
l = len(data)
if len(leftdata) > 0 { // some data left for processing
data = append(leftdata, data ...)
data = append(leftdata, data...)
}
if l < MIN_PACKET_LEN { // not enough data
leftdata = data
@ -137,9 +139,15 @@ func (client *Client) processLoop() {
continue
}
switch resp.DataType {
case WORK_DATA, WORK_WARNING, WORK_STATUS, WORK_COMPLETE,
WORK_FAIL, WORK_EXCEPTION:
client.handleResponse(string(resp.Handle), resp)
case STATUS_RES:
client.handleInner("status-" + resp.Handle, resp)
case JOB_CREATED:
client.handleInner("created", resp)
case ECHO_RES:
client.handleInner("echo", resp)
case WORK_DATA, WORK_WARNING, WORK_STATUS, WORK_COMPLETE,
WORK_FAIL, WORK_EXCEPTION:
client.handleResponse(resp.Handle, resp)
}
if len(data) > l {
leftdata = data[l:]
@ -155,28 +163,37 @@ func (client *Client) err(e error) {
}
// job handler
func (client *Client) handleResponse(key string, resp *response) {
func (client *Client) handleResponse(key string, resp *Response) {
client.mutex.RLock()
defer client.mutex.RUnlock()
if h, ok := client.respHandler[key]; ok {
h(resp)
delete(client.respHandler, string(resp.Handle))
delete(client.respHandler, key)
}
}
// job handler
func (client *Client) handleInner(key string, resp *Response) {
if h, ok := client.innerHandler[key]; ok {
h(resp)
delete(client.innerHandler, key)
}
}
// Internal do
func (client *Client) do(funcname string, data []byte,
flag uint32) (handle []byte) {
req := getJob(funcname, client.IdGen.Id().(string), data)
client.mutex.Lock()
defer client.mutex.Unlock()
flag uint32) (handle string) {
id := client.IdGen.Id().(string)
req := getJob(funcname, id, data)
client.write(req)
var wg sync.WaitGroup
wg.Add(1)
client.createdHandler = func(resp *response) {
client.mutex.RLock()
client.innerHandler["created"] = ResponseHandler(func(resp *Response) {
defer wg.Done()
defer client.mutex.RUnlock()
handle = resp.Handle
}
})
wg.Wait()
return
}
@ -188,7 +205,7 @@ func (client *Client) do(funcname string, data []byte,
// data is encoding to byte array.
// flag set the job type, include running level: JOB_LOW, JOB_NORMAL, JOB_HIGH
func (client *Client) Do(funcname string, data []byte,
flag byte, h ResponseHandler) (handle []byte) {
flag byte, h ResponseHandler) (handle string) {
var datatype uint32
switch flag {
case JOB_LOW:
@ -202,7 +219,7 @@ func (client *Client) Do(funcname string, data []byte,
client.mutex.Lock()
defer client.mutex.Unlock()
if h != nil {
client.respHandler[string(handle)] = h
client.respHandler[handle] = h
}
return
}
@ -212,7 +229,7 @@ func (client *Client) Do(funcname string, data []byte,
// data is encoding to byte array.
// flag set the job type, include running level: JOB_LOW, JOB_NORMAL, JOB_HIGH
func (client *Client) DoBg(funcname string, data []byte,
flag byte) (handle []byte) {
flag byte) (handle string) {
var datatype uint32
switch flag {
case JOB_LOW:
@ -228,26 +245,42 @@ func (client *Client) DoBg(funcname string, data []byte,
// Get job status from job server.
// !!!Not fully tested.!!!
func (client *Client) Status(handle []byte, h ResponseHandler) (err error) {
func (client *Client) Status(handle string, h ResponseHandler) (status *Status, err error) {
req := getRequest()
req.DataType = GET_STATUS
req.Data = handle
req.Data = []byte(handle)
client.write(req)
if h != nil {
client.respHandler["status-" + string(handle)] = h
}
var wg sync.WaitGroup
wg.Add(1)
client.mutex.Lock()
client.innerHandler["status-" + handle] = ResponseHandler(func(resp *Response) {
defer wg.Done()
defer client.mutex.Unlock()
var err error
status, err = resp.Status()
if err != nil {
client.err(err)
}
})
wg.Wait()
return
}
// Send a something out, get the samething back.
func (client *Client) Echo(data []byte, h ResponseHandler) (err error) {
func (client *Client) Echo(data []byte) (echo []byte, err error) {
req := getRequest()
req.DataType = ECHO_REQ
req.Data = data
client.write(req)
if h != nil {
client.respHandler["echo"] = h
}
var wg sync.WaitGroup
wg.Add(1)
client.mutex.Lock()
client.innerHandler["echo"] = ResponseHandler(func(resp *Response) {
defer wg.Done()
defer client.mutex.Unlock()
echo = resp.Data
})
wg.Wait()
return
}

65
client/client_test.go
View File

@ -1,34 +1,34 @@
package client
import (
"fmt"
"testing"
"time"
)
var client *Client
func printHandle(resp *Response) {
fmt.Printf("%V", resp)
}
func TestClientAddServer(t *testing.T) {
t.Log("Add local server 127.0.0.1:4730")
var err error
if client, err = New("127.0.0.1:4730"); err != nil {
if client, err = New("tcp4", "127.0.0.1:4730"); err != nil {
t.Error(err)
return
}
client.ErrHandler = func(e error) {
client.ErrorHandler = func(e error) {
t.Log(e)
}
}
func TestClientEcho(t *testing.T) {
echo, err := client.Echo([]byte("Hello world"), time.Second)
err := client.Echo([]byte("Hello world"), printHandle)
if err != nil {
t.Error(err)
return
}
if string(echo) != "Hello world" {
t.Errorf("Invalid echo data: %s", echo)
return
}
}
func TestClientDoBg(t *testing.T) {
@ -39,7 +39,7 @@ func TestClientDoBg(t *testing.T) {
}
func TestClientDo(t *testing.T) {
jobHandler := func(job *Job) {
jobHandler := func(job *Response) {
str := string(job.Data)
if str == "ABCDEF" {
t.Log(str)
@ -58,34 +58,37 @@ func TestClientDo(t *testing.T) {
func TestClientStatus(t *testing.T) {
s1, err := client.Status("handle not exists", time.Second)
err := client.Status("handle not exists", printHandle)
if err != nil {
t.Error(err)
return
}
if s1.Known {
t.Errorf("The job (%s) shouldn't be known.", s1.Handle)
return
}
if s1.Running {
t.Errorf("The job (%s) shouldn't be running.", s1.Handle)
return
}
/*
if s1.Known {
t.Errorf("The job (%s) shouldn't be known.", s1.Handle)
return
}
if s1.Running {
t.Errorf("The job (%s) shouldn't be running.", s1.Handle)
return
}*/
handle := client.Do("Delay5sec", []byte("abcdef"), JOB_LOW, nil)
s2, err := client.Status(handle, time.Second)
if err != nil {
t.Error(err)
return
}
if !s2.Known {
t.Errorf("The job (%s) should be known.", s2.Handle)
return
}
if s2.Running {
t.Errorf("The job (%s) shouldn't be running.", s2.Handle)
return
}
err = client.Status(handle, printHandle)
/*
if err != nil {
t.Error(err)
return
}
if !s2.Known {
t.Errorf("The job (%s) should be known.", s2.Handle)
return
}
if s2.Running {
t.Errorf("The job (%s) shouldn't be running.", s2.Handle)
return
}
*/
}
func TestClientClose(t *testing.T) {

48
client/common_test.go
View File

@ -1,48 +0,0 @@
package client
import (
"bytes"
"testing"
)
var (
testCase = map[uint32][4]byte{
0: [...]byte{0, 0, 0, 0},
1: [...]byte{0, 0, 0, 1},
256: [...]byte{0, 0, 1, 0},
256 * 256: [...]byte{0, 1, 0, 0},
256 * 256 * 256: [...]byte{1, 0, 0, 0},
256*256*256 + 256*256 + 256 + 1: [...]byte{1, 1, 1, 1},
4294967295: [...]byte{0xFF, 0xFF, 0xFF, 0xFF},
}
)
func TestUint32ToBytes(t *testing.T) {
for k, v := range testCase {
b := Uint32ToBytes(k)
if bytes.Compare(b[:], v[:]) != 0 {
t.Errorf("%v was expected, but %v was got", v, b)
}
}
}
func TestBytesToUint32s(t *testing.T) {
for k, v := range testCase {
u := BytesToUint32([4]byte(v))
if u != k {
t.Errorf("%v was expected, but %v was got", k, u)
}
}
}
func BenchmarkByteToUnit32(b *testing.B) {
for i := 0; i < b.N; i++ {
BytesToUint32([4]byte{0xF, 0xF, 0xF, 0xF})
}
}
func BenchmarkUint32ToByte(b *testing.B) {
for i := 0; i < b.N; i++ {
Uint32ToBytes(123456)
}
}

2
client/error.go
View File

@ -9,8 +9,8 @@ import (
"bytes"
"errors"
"fmt"
"syscall"
"strconv"
"syscall"
)
var (

3
client/handler.go
View File

@ -1,7 +1,8 @@
package client
// Response handler
type ResponseHandler func(*response)
type ResponseHandler func(*Response)
// Error handler
type ErrorHandler func(error)

35
client/id.go
View File

@ -1,35 +0,0 @@
package client
import (
"github.com/mikespook/golib/autoinc"
"labix.org/v2/mgo/bson"
"strconv"
)
type IdGenerator interface {
Id() string
}
// ObjectId
type objectId struct{}
func (id *objectId) Id() string {
return bson.NewObjectId().Hex()
}
func NewObjectId() IdGenerator {
return &objectId{}
}
// AutoIncId
type autoincId struct {
*autoinc.AutoInc
}
func (id *autoincId) Id() string {
return strconv.Itoa(id.AutoInc.Id())
}
func NewAutoIncId() IdGenerator {
return &autoincId{autoinc.New(1, 1)}
}

12
client/pool.go
View File

@ -94,7 +94,7 @@ func (pool *Pool) Remove(addr string) {
}
func (pool *Pool) Do(funcname string, data []byte,
flag byte, h ResponseHandler) (addr string, handle []byte) {
flag byte, h ResponseHandler) (addr, handle string) {
client := pool.selectServer()
handle = client.Do(funcname, data, flag, h)
addr = client.addr
@ -102,7 +102,7 @@ func (pool *Pool) Do(funcname string, data []byte,
}
func (pool *Pool) DoBg(funcname string, data []byte,
flag byte) (addr string, handle []byte) {
flag byte) (addr, handle string) {
client := pool.selectServer()
handle = client.DoBg(funcname, data, flag)
addr = client.addr
@ -111,9 +111,9 @@ func (pool *Pool) DoBg(funcname string, data []byte,
// Get job status from job server.
// !!!Not fully tested.!!!
func (pool *Pool) Status(addr string, handle []byte, h ResponseHandler) (err error) {
func (pool *Pool) Status(addr, handle string, h ResponseHandler) (status *Status, err error) {
if client, ok := pool.clients[addr]; ok {
err = client.Status(handle, h)
status, err = client.Status(handle, h)
} else {
err = ErrNotFound
}
@ -121,7 +121,7 @@ func (pool *Pool) Status(addr string, handle []byte, h ResponseHandler) (err err
}
// Send a something out, get the samething back.
func (pool *Pool) Echo(addr string, data []byte, h ResponseHandler) (r []byte, err error) {
func (pool *Pool) Echo(addr string, data []byte, h ResponseHandler) (echo []byte, err error) {
var client *poolClient
if addr == "" {
client = pool.selectServer()
@ -132,7 +132,7 @@ func (pool *Pool) Echo(addr string, data []byte, h ResponseHandler) (r []byte, e
return
}
}
err = client.Echo(data, h)
echo, err = client.Echo(data)
return
}

48
client/pool_test.go
View File

@ -2,7 +2,6 @@ package client
import (
"testing"
"time"
)
var (
@ -11,10 +10,10 @@ var (
func TestPoolAdd(t *testing.T) {
t.Log("Add servers")
if err := pool.Add("127.0.0.1:4730", 1); err != nil {
if err := pool.Add("tcp4", "127.0.0.1:4730", 1); err != nil {
t.Error(err)
}
if err := pool.Add("127.0.0.1:4730", 1); err != nil {
if err := pool.Add("tcp4", "127.0.0.1:4730", 1); err != nil {
t.Error(err)
}
if len(pool.clients) != 2 {
@ -23,7 +22,7 @@ func TestPoolAdd(t *testing.T) {
}
func TestPoolEcho(t *testing.T) {
echo, err := pool.Echo("", []byte("Hello pool"), time.Second)
echo, err := pool.Echo("", []byte("Hello pool"), printHandle)
if err != nil {
t.Error(err)
return
@ -33,7 +32,7 @@ func TestPoolEcho(t *testing.T) {
return
}
_, err = pool.Echo("not exists", []byte("Hello pool"), time.Second)
_, err = pool.Echo("not exists", []byte("Hello pool"), printHandle)
if err != ErrNotFound {
t.Errorf("ErrNotFound expected, got %s", err)
}
@ -49,7 +48,7 @@ func TestPoolDoBg(t *testing.T) {
}
func TestPoolDo(t *testing.T) {
jobHandler := func(job *Job) {
jobHandler := func(job *Response) {
str := string(job.Data)
if str == "ABCDEF" {
t.Log(str)
@ -67,33 +66,34 @@ func TestPoolDo(t *testing.T) {
}
func TestPoolStatus(t *testing.T) {
s1, err := pool.Status("127.0.0.1:4730", "handle not exists", time.Second)
err := pool.Status("127.0.0.1:4730", "handle not exists", printHandle)
if err != nil {
t.Error(err)
return
}
if s1.Known {
t.Errorf("The job (%s) shouldn't be known.", s1.Handle)
}
if s1.Running {
t.Errorf("The job (%s) shouldn't be running.", s1.Handle)
}
/*
if s1.Known {
t.Errorf("The job (%s) shouldn't be known.", s1.Handle)
}
if s1.Running {
t.Errorf("The job (%s) shouldn't be running.", s1.Handle)
}
*/
addr, handle := pool.Do("Delay5sec", []byte("abcdef"), JOB_LOW, nil)
s2, err := pool.Status(addr, handle, time.Second)
err = pool.Status(addr, handle, printHandle)
if err != nil {
t.Error(err)
return
}
if !s2.Known {
t.Errorf("The job (%s) should be known.", s2.Handle)
}
if s2.Running {
t.Errorf("The job (%s) shouldn't be running.", s2.Handle)
}
_, err = pool.Status("not exists", "not exists", time.Second)
/*
if !s2.Known {
t.Errorf("The job (%s) should be known.", s2.Handle)
}
if s2.Running {
t.Errorf("The job (%s) shouldn't be running.", s2.Handle)
}
*/
err = pool.Status("not exists", "not exists", printHandle)
if err != ErrNotFound {
t.Error(err)
}

10
client/request.go
View File

@ -11,19 +11,19 @@ import (
// request
type request struct {
DataType uint32
Data []byte
DataType uint32
Data []byte
}
// Encode a Request to byte slice
func (req *request) Encode() (data []byte) {
l := len(req.Data) // length of data
tl := l + 12 // add 12 bytes head
l := len(req.Data) // length of data
tl := l + MIN_PACKET_LEN // add 12 bytes head
data = getBuffer(tl)
copy(data[:4], REQ_STR)
binary.BigEndian.PutUint32(data[4:8], req.DataType)
binary.BigEndian.PutUint32(data[8:12], uint32(l))
copy(data[12:], req.Data)
copy(data[MIN_PACKET_LEN:], req.Data)
return
}

47
client/response.go
View File

@ -6,17 +6,17 @@
package client
import (
"fmt"
"bytes"
"strconv"
"encoding/binary"
"fmt"
"strconv"
)
// response
type response struct {
DataType uint32
Data, Handle []byte
UID string
type Response struct {
DataType uint32
Data []byte
UID, Handle string
}
// Extract the Response's result.
@ -24,10 +24,10 @@ type response struct {
// if data != nil, err != nil, then worker has a exception
// if data != nil, err == nil, then worker complate job
// after calling this method, the Response.Handle will be filled
func (resp *response) Result() (data []byte, err error) {
func (resp *Response) Result() (data []byte, err error) {
switch resp.DataType {
case WORK_FAIL:
resp.Handle = resp.Data
resp.Handle = string(resp.Data)
err = ErrWorkFail
return
case WORK_EXCEPTION:
@ -39,7 +39,7 @@ func (resp *response) Result() (data []byte, err error) {
err = fmt.Errorf("Invalid data: %V", resp.Data)
return
}
resp.Handle = s[0]
resp.Handle = string(s[0])
data = s[1]
default:
err = ErrDataType
@ -48,7 +48,7 @@ func (resp *response) Result() (data []byte, err error) {
}
// Extract the job's update
func (resp *response) Update() (data []byte, err error) {
func (resp *Response) Update() (data []byte, err error) {
if resp.DataType != WORK_DATA &&
resp.DataType != WORK_WARNING {
err = ErrDataType
@ -62,19 +62,19 @@ func (resp *response) Update() (data []byte, err error) {
if resp.DataType == WORK_WARNING {
err = ErrWorkWarning
}
resp.Handle = s[0]
resp.Handle = string(s[0])
data = s[1]
return
}
// Decode a job from byte slice
func decodeResponse(data []byte) (resp *response, l int, err error) {
func decodeResponse(data []byte) (resp *Response, l int, err error) {
if len(data) < MIN_PACKET_LEN { // valid package should not less 12 bytes
err = fmt.Errorf("Invalid data: %V", data)
return
}
dl := int(binary.BigEndian.Uint32(data[8:12]))
dt := data[MIN_PACKET_LEN:dl+MIN_PACKET_LEN]
dt := data[MIN_PACKET_LEN : dl+MIN_PACKET_LEN]
if len(dt) != int(dl) { // length not equal
err = fmt.Errorf("Invalid data: %V", data)
return
@ -82,11 +82,13 @@ func decodeResponse(data []byte) (resp *response, l int, err error) {
resp = getResponse()
resp.DataType = binary.BigEndian.Uint32(data[4:8])
switch resp.DataType {
case ECHO_RES:
resp.Data = dt
case WORK_DATA, WORK_WARNING, WORK_STATUS,
WORK_COMPLETE, WORK_FAIL, WORK_EXCEPTION:
s := bytes.SplitN(data, []byte{'\x00'}, 2)
s := bytes.SplitN(dt, []byte{'\x00'}, 2)
if len(s) >= 2 {
resp.Handle = s[0]
resp.Handle = string(s[0])
resp.Data = s[1]
} else {
err = fmt.Errorf("Invalid data: %V", data)
@ -97,8 +99,16 @@ func decodeResponse(data []byte) (resp *response, l int, err error) {
return
}
func (resp *Response) IsEcho() bool {
return resp.DataType == ECHO_RES
}
func (resp *Response) IsStatus() bool {
return resp.DataType == STATUS_RES
}
// status handler
func (resp *response) Status() (status *Status, err error) {
func (resp *Response) Status() (status *Status, err error) {
data := bytes.SplitN(resp.Data, []byte{'\x00'}, 5)
if len(data) != 5 {
err = fmt.Errorf("Invalid data: %V", resp.Data)
@ -121,9 +131,8 @@ func (resp *response) Status() (status *Status, err error) {
return
}
func getResponse() (resp *response) {
func getResponse() (resp *Response) {
// TODO add a pool
resp = &response{}
resp = &Response{}
return
}