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fxied issue #20

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This commit is contained in:
Xing Xing 2014-01-09 16:16:34 +08:00
parent 47d03a8bb1
commit 76196899f8
4 changed files with 85 additions and 46 deletions
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54
client/client.go
View File

@ -6,6 +6,7 @@ import (
"io"
"net"
"sync"
"bufio"
)
// One client connect to one server.
@ -19,6 +20,7 @@ type Client struct {
in chan *Response
isConn bool
conn net.Conn
rw *bufio.ReadWriter
ErrorHandler ErrorHandler
}
@ -36,6 +38,8 @@ func New(network, addr string) (client *Client, err error) {
if err != nil {
return
}
client.rw = bufio.NewReadWriter(bufio.NewReader(client.conn),
bufio.NewWriter(client.conn))
client.isConn = true
go client.readLoop()
go client.processLoop()
@ -46,12 +50,12 @@ func (client *Client) write(req *request) (err error) {
var n int
buf := req.Encode()
for i := 0; i < len(buf); i += n {
n, err = client.conn.Write(buf[i:])
n, err = client.rw.Write(buf[i:])
if err != nil {
return
}
}
return
return client.rw.Flush()
}
func (client *Client) read(length int) (data []byte, err error) {
@ -59,7 +63,7 @@ func (client *Client) read(length int) (data []byte, err error) {
buf := getBuffer(bufferSize)
// read until data can be unpacked
for i := length; i > 0 || len(data) < minPacketLength; i -= n {
if n, err = client.conn.Read(buf); err != nil {
if n, err = client.rw.Read(buf); err != nil {
if err == io.EOF {
err = ErrLostConn
}
@ -78,6 +82,7 @@ func (client *Client) readLoop() {
var data, leftdata []byte
var err error
var resp *Response
ReadLoop:
for {
if data, err = client.read(bufferSize); err != nil {
client.err(err)
@ -93,24 +98,30 @@ func (client *Client) readLoop() {
client.err(err)
break
}
client.rw = bufio.NewReadWriter(bufio.NewReader(client.conn),
bufio.NewWriter(client.conn))
continue
}
if len(leftdata) > 0 { // some data left for processing
data = append(leftdata, data...)
}
l := len(data)
if l < minPacketLength { // not enough data
leftdata = data
continue
}
if resp, l, err = decodeResponse(data); err != nil {
client.err(err)
continue
}
client.in <- resp
leftdata = nil
if len(data) > l {
leftdata = data[l:]
for {
l := len(data)
if l < minPacketLength { // not enough data
leftdata = data
continue ReadLoop
}
if resp, l, err = decodeResponse(data); err != nil {
leftdata = data[l:]
continue ReadLoop
} else {
client.in <- resp
}
data = data[l:]
if len(data) > 0 {
continue
}
break
}
}
}
@ -131,9 +142,13 @@ func (client *Client) processLoop() {
resp = client.handleInner("c", resp)
case dtEchoRes:
resp = client.handleInner("e", resp)
case dtWorkData, dtWorkWarning, dtWorkStatus, dtWorkComplete,
dtWorkFail, dtWorkException:
case dtWorkData, dtWorkWarning, dtWorkStatus:
resp = client.handleResponse(resp.Handle, resp)
case dtWorkComplete, dtWorkFail, dtWorkException:
resp = client.handleResponse(resp.Handle, resp)
if resp != nil {
delete(client.respHandler, resp.Handle)
}
}
}
}
@ -147,7 +162,6 @@ func (client *Client) err(e error) {
func (client *Client) handleResponse(key string, resp *Response) *Response {
if h, ok := client.respHandler[key]; ok {
h(resp)
delete(client.respHandler, key)
return nil
}
return resp
@ -227,7 +241,7 @@ func (client *Client) Status(handle string) (status *Status, err error) {
client.lastcall = "s" + handle
client.innerHandler["s"+handle] = func(resp *Response) {
var err error
status, err = resp.Status()
status, err = resp._status()
if err != nil {
client.err(err)
}

17
client/common.go
View File

@ -49,19 +49,22 @@ const (
dtSubmitJobHighBg = 32
dtSubmitJobLow = 33
dtSubmitJobLowBg = 34
WorkComplate = dtWorkComplete
WorkDate = dtWorkData
WorkStatus = dtWorkStatus
WorkWarning = dtWorkWarning
WorkFail = dtWorkFail
WorkException = dtWorkException
)
const (
// Job type
// JOB_NORMAL | JOB_BG means a normal level job run in background
// normal level
JobNormal = 0
// background job
JobBg = 1
JobNormal = iota
// low level
JobLow = 2
JobLow
// high level
JobHigh = 4
JobHigh
)
func getBuffer(l int) (buf []byte) {

48
client/response.go
View File

@ -32,13 +32,7 @@ func (resp *Response) Result() (data []byte, err error) {
err = ErrWorkException
fallthrough
case dtWorkComplete:
s := bytes.SplitN(resp.Data, []byte{'\x00'}, 2)
if len(s) != 2 {
err = fmt.Errorf("Invalid data: %V", resp.Data)
return
}
resp.Handle = string(s[0])
data = s[1]
data = resp.Data
default:
err = ErrDataType
}
@ -52,26 +46,25 @@ func (resp *Response) Update() (data []byte, err error) {
err = ErrDataType
return
}
s := bytes.SplitN(resp.Data, []byte{'\x00'}, 2)
if len(s) != 2 {
err = ErrInvalidData
return
}
data = resp.Data
if resp.DataType == dtWorkWarning {
err = ErrWorkWarning
}
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) {
if len(data) < minPacketLength { // valid package should not less 12 bytes
a := len(data)
if a < minPacketLength { // valid package should not less 12 bytes
err = fmt.Errorf("Invalid data: %V", data)
return
}
dl := int(binary.BigEndian.Uint32(data[8:12]))
if a < minPacketLength + dl {
err = fmt.Errorf("Invalid data: %V", data)
return
}
dt := data[minPacketLength : dl+minPacketLength]
if len(dt) != int(dl) { // length not equal
err = fmt.Errorf("Invalid data: %V", data)
@ -101,8 +94,31 @@ func decodeResponse(data []byte) (resp *Response, l int, err error) {
return
}
// status handler
func (resp *Response) Status() (status *Status, err error) {
data := bytes.SplitN(resp.Data, []byte{'\x00'}, 2)
if len(data) != 2 {
err = fmt.Errorf("Invalid data: %V", resp.Data)
return
}
status = &Status{}
status.Handle = resp.Handle
status.Known = true
status.Running = true
status.Numerator, err = strconv.ParseUint(string(data[0]), 10, 0)
if err != nil {
err = fmt.Errorf("Invalid Integer: %s", data[0])
return
}
status.Denominator, err = strconv.ParseUint(string(data[1]), 10, 0)
if err != nil {
err = fmt.Errorf("Invalid Integer: %s", data[1])
return
}
return
}
// status handler
func (resp *Response) _status() (status *Status, err error) {
data := bytes.SplitN(resp.Data, []byte{'\x00'}, 4)
if len(data) != 4 {
err = fmt.Errorf("Invalid data: %V", resp.Data)

12
worker/agent.go
View File

@ -5,12 +5,14 @@ import (
"net"
"strings"
"sync"
"bufio"
)
// The agent of job server.
type agent struct {
sync.Mutex
conn net.Conn
rw *bufio.ReadWriter
worker *Worker
in chan []byte
net, addr string
@ -34,6 +36,8 @@ func (a *agent) Connect() (err error) {
if err != nil {
return
}
a.rw = bufio.NewReadWriter(bufio.NewReader(a.conn),
bufio.NewWriter(a.conn))
go a.work()
return
}
@ -58,6 +62,8 @@ func (a *agent) work() {
a.worker.err(err)
break
}
a.rw = bufio.NewReadWriter(bufio.NewReader(a.conn),
bufio.NewWriter(a.conn))
}
if len(leftdata) > 0 { // some data left for processing
data = append(leftdata, data...)
@ -120,7 +126,7 @@ func (a *agent) read(length int) (data []byte, err error) {
buf := getBuffer(bufferSize)
// read until data can be unpacked
for i := length; i > 0 || len(data) < minPacketLength; i -= n {
if n, err = a.conn.Read(buf); err != nil {
if n, err = a.rw.Read(buf); err != nil {
if isClosed(err) {
err = ErrLostConn
}
@ -139,10 +145,10 @@ func (a *agent) write(outpack *outPack) (err error) {
var n int
buf := outpack.Encode()
for i := 0; i < len(buf); i += n {
n, err = a.conn.Write(buf[i:])
n, err = a.rw.Write(buf[i:])
if err != nil {
return err
}
}
return
return a.rw.Flush()
}