gofix for go's weekly version: weekly.2011-09-01
This commit is contained in:
mikespook
parent
22866616cd
commit
e50c4533af
@ -9,7 +9,7 @@ func main() {
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client := gearman.NewClient()
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defer client.Close()
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client.AddServer("127.0.0.1:4730")
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echo := []byte("Hello\x00world")
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echo := []byte("Hello\x00 world")
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if data, err := client.Echo(echo); err != nil {
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log.Println(string(data))
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@ -5,12 +5,12 @@
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package gearman
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import (
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"os"
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"net"
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"sync"
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// "log"
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"strconv"
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"bytes"
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"os"
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"net"
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"sync"
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// "log"
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"strconv"
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"bytes"
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)
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/*
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@ -23,97 +23,97 @@ usage:
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*/
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type Client struct {
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mutex sync.Mutex
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conn net.Conn
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JobQueue chan *ClientJob
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incoming chan []byte
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UId uint32
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mutex sync.Mutex
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conn net.Conn
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JobQueue chan *ClientJob
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incoming chan []byte
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UId uint32
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}
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// Create a new client.
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func NewClient() (client *Client) {
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client = &Client{JobQueue: make(chan *ClientJob, QUEUE_CAP),
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incoming: make(chan []byte, QUEUE_CAP),
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UId: 1}
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return
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client = &Client{JobQueue: make(chan *ClientJob, QUEUE_CAP),
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incoming: make(chan []byte, QUEUE_CAP),
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UId: 1}
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return
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}
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// Add a server.
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// In this version, one client connect to one job server.
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// Sample is better. Plz do the load balancing by your self.
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func (client *Client) AddServer(addr string) (err os.Error) {
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conn, err := net.Dial(TCP, addr)
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if err != nil {
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return
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}
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client.conn = conn
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return
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conn, err := net.Dial(TCP, addr)
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if err != nil {
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return
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}
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client.conn = conn
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return
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}
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// Internal read
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func (client *Client) read() (data []byte, err os.Error) {
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if len(client.incoming) > 0 {
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// incoming queue is not empty
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data = <-client.incoming
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} else {
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// empty queue, read data from socket
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for {
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buf := make([]byte, BUFFER_SIZE)
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var n int
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if n, err = client.conn.Read(buf); err != nil {
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if err == os.EOF && n == 0 {
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break
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}
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return
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}
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data = append(data, buf[0:n]...)
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if n < BUFFER_SIZE {
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break
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}
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}
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}
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// split package
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start, end := 0, 4
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tl := len(data)
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for i := 0; i < tl; i++ {
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if string(data[start:end]) == RES_STR {
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l := int(byteToUint32([4]byte{data[start+8], data[start+9], data[start+10], data[start+11]}))
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total := l + 12
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if total == tl {
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return
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} else {
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client.incoming <- data[total:]
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data = data[:total]
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return
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}
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} else {
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start++
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end++
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}
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}
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err = os.NewError("Invalid data struct.")
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return
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if len(client.incoming) > 0 {
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// incoming queue is not empty
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data = <-client.incoming
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} else {
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// empty queue, read data from socket
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for {
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buf := make([]byte, BUFFER_SIZE)
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var n int
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if n, err = client.conn.Read(buf); err != nil {
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if err == os.EOF && n == 0 {
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break
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}
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return
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}
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data = append(data, buf[0:n]...)
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if n < BUFFER_SIZE {
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break
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}
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}
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}
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// split package
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start, end := 0, 4
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tl := len(data)
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for i := 0; i < tl; i++ {
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if string(data[start:end]) == RES_STR {
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l := int(byteToUint32([4]byte{data[start+8], data[start+9], data[start+10], data[start+11]}))
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total := l + 12
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if total == tl {
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return
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} else {
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client.incoming <- data[total:]
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data = data[:total]
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return
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}
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} else {
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start++
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end++
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}
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}
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err = os.NewError("Invalid data struct.")
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return
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}
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// Read a job from job server.
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// This function will return the job, and add it to the job queue.
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func (client *Client) ReadJob() (job *ClientJob, err os.Error) {
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var rel []byte
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if rel, err = client.read(); err != nil {
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return
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}
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if job, err = DecodeClientJob(rel); err != nil {
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return
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} else {
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switch job.DataType {
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case ERROR:
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_, err = getError(job.Data)
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return
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case WORK_DATA, WORK_WARNING, WORK_STATUS, WORK_COMPLETE, WORK_FAIL, WORK_EXCEPTION:
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client.JobQueue <- job
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}
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}
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return
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var rel []byte
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if rel, err = client.read(); err != nil {
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return
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}
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if job, err = DecodeClientJob(rel); err != nil {
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return
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} else {
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switch job.DataType {
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case ERROR:
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_, err = getError(job.Data)
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return
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case WORK_DATA, WORK_WARNING, WORK_STATUS, WORK_COMPLETE, WORK_FAIL, WORK_EXCEPTION:
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client.JobQueue <- job
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}
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}
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return
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}
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// Do the function.
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@ -123,156 +123,156 @@ func (client *Client) ReadJob() (job *ClientJob, err os.Error) {
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// and if it is background job: JOB_BG.
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// JOB_LOW | JOB_BG means the job is running with low level in background.
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func (client *Client) Do(funcname string, data []byte, flag byte) (handle string, err os.Error) {
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var datatype uint32
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if flag&JOB_LOW == JOB_LOW {
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if flag&JOB_BG == JOB_BG {
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datatype = SUBMIT_JOB_LOW_BG
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} else {
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datatype = SUBMIT_JOB_LOW
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}
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} else if flag&JOB_HIGH == JOB_HIGH {
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if flag&JOB_BG == JOB_BG {
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datatype = SUBMIT_JOB_HIGH_BG
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} else {
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datatype = SUBMIT_JOB_HIGH
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}
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} else if flag&JOB_BG == JOB_BG {
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datatype = SUBMIT_JOB_BG
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} else {
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datatype = SUBMIT_JOB
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}
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var datatype uint32
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if flag&JOB_LOW == JOB_LOW {
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if flag&JOB_BG == JOB_BG {
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datatype = SUBMIT_JOB_LOW_BG
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} else {
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datatype = SUBMIT_JOB_LOW
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}
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} else if flag&JOB_HIGH == JOB_HIGH {
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if flag&JOB_BG == JOB_BG {
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datatype = SUBMIT_JOB_HIGH_BG
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} else {
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datatype = SUBMIT_JOB_HIGH
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}
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} else if flag&JOB_BG == JOB_BG {
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datatype = SUBMIT_JOB_BG
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} else {
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datatype = SUBMIT_JOB
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}
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rel := make([]byte, 0, 1024*64)
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rel = append(rel, []byte(funcname)...)
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rel = append(rel, '\x00')
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client.mutex.Lock()
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uid := strconv.Itoa(int(client.UId))
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client.UId++
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rel = append(rel, []byte(uid)...)
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client.mutex.Unlock()
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rel = append(rel, '\x00')
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rel = append(rel, data...)
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if err = client.WriteJob(NewClientJob(REQ, datatype, rel)); err != nil {
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return
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}
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var job *ClientJob
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if job, err = client.readLastJob(JOB_CREATED); err != nil {
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return
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}
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handle = string(job.Data)
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go func() {
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if flag&JOB_BG != JOB_BG {
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for {
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if job, err = client.ReadJob(); err != nil {
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return
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}
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switch job.DataType {
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case WORK_DATA, WORK_WARNING:
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case WORK_STATUS:
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case WORK_COMPLETE, WORK_FAIL, WORK_EXCEPTION:
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return
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}
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}
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}
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}()
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return
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rel := make([]byte, 0, 1024*64)
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rel = append(rel, []byte(funcname)...)
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rel = append(rel, '\x00')
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client.mutex.Lock()
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uid := strconv.Itoa(int(client.UId))
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client.UId++
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rel = append(rel, []byte(uid)...)
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client.mutex.Unlock()
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rel = append(rel, '\x00')
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rel = append(rel, data...)
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if err = client.WriteJob(NewClientJob(REQ, datatype, rel)); err != nil {
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return
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}
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var job *ClientJob
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if job, err = client.readLastJob(JOB_CREATED); err != nil {
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return
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}
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handle = string(job.Data)
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go func() {
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if flag&JOB_BG != JOB_BG {
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for {
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if job, err = client.ReadJob(); err != nil {
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return
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}
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switch job.DataType {
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case WORK_DATA, WORK_WARNING:
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case WORK_STATUS:
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case WORK_COMPLETE, WORK_FAIL, WORK_EXCEPTION:
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return
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}
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}
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}
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}()
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return
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}
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// Internal read last job
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func (client *Client) readLastJob(datatype uint32) (job *ClientJob, err os.Error) {
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for {
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if job, err = client.ReadJob(); err != nil {
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return
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}
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if job.DataType == datatype {
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break
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}
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}
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if job.DataType != datatype {
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err = os.NewError("No job got.")
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}
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return
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for {
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if job, err = client.ReadJob(); err != nil {
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return
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}
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if job.DataType == datatype {
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break
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}
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}
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if job.DataType != datatype {
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err = os.NewError("No job got.")
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}
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return
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}
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// Get job status from job server.
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// !!!Not fully tested.!!!
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func (client *Client) Status(handle string) (known, running bool, numerator, denominator uint, err os.Error) {
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if err = client.WriteJob(NewClientJob(REQ, GET_STATUS, []byte(handle))); err != nil {
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return
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}
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var job *ClientJob
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if job, err = client.readLastJob(STATUS_RES); err != nil {
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return
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}
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data := bytes.Split(job.Data, []byte{'\x00'}, 5)
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if len(data) != 5 {
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err = os.NewError("Data Error.")
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return
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}
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if handle != string(data[0]) {
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err = os.NewError("Invalid handle.")
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return
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}
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known = data[1][0] == '1'
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running = data[2][0] == '1'
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if numerator, err = strconv.Atoui(string(data[3][0])); err != nil {
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return
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}
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if denominator, err = strconv.Atoui(string(data[4][0])); err != nil {
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return
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}
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return
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if err = client.WriteJob(NewClientJob(REQ, GET_STATUS, []byte(handle))); err != nil {
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return
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}
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var job *ClientJob
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if job, err = client.readLastJob(STATUS_RES); err != nil {
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return
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}
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data := bytes.SplitN(job.Data, []byte{'\x00'}, 5)
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if len(data) != 5 {
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err = os.NewError("Data Error.")
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return
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}
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if handle != string(data[0]) {
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err = os.NewError("Invalid handle.")
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return
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}
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known = data[1][0] == '1'
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running = data[2][0] == '1'
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if numerator, err = strconv.Atoui(string(data[3][0])); err != nil {
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return
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}
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if denominator, err = strconv.Atoui(string(data[4][0])); err != nil {
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return
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}
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return
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}
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// Send a something out, get the samething back.
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func (client *Client) Echo(data []byte) (echo []byte, err os.Error) {
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if err = client.WriteJob(NewClientJob(REQ, ECHO_REQ, data)); err != nil {
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return
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}
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var job *ClientJob
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if job, err = client.readLastJob(ECHO_RES); err != nil {
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return
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}
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echo = job.Data
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return
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if err = client.WriteJob(NewClientJob(REQ, ECHO_REQ, data)); err != nil {
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return
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}
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var job *ClientJob
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if job, err = client.readLastJob(ECHO_RES); err != nil {
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return
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}
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echo = job.Data
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return
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}
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// Get the last job.
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// the job means a network package.
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// Normally, it is the job executed result.
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func (client *Client) LastJob() (job *ClientJob) {
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if l := len(client.JobQueue); l != 1 {
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if l == 0 {
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return
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}
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for i := 0; i < l-1; i++ {
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<-client.JobQueue
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}
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}
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return <-client.JobQueue
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if l := len(client.JobQueue); l != 1 {
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if l == 0 {
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return
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}
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for i := 0; i < l-1; i++ {
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<-client.JobQueue
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}
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}
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return <-client.JobQueue
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}
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// Send the job to job server.
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func (client *Client) WriteJob(job *ClientJob) (err os.Error) {
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return client.write(job.Encode())
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return client.write(job.Encode())
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}
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// Internal write
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func (client *Client) write(buf []byte) (err os.Error) {
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var n int
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for i := 0; i < len(buf); i += n {
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n, err = client.conn.Write(buf[i:])
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if err != nil {
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return
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}
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}
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return
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var n int
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for i := 0; i < len(buf); i += n {
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n, err = client.conn.Write(buf[i:])
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if err != nil {
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return
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}
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}
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return
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}
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// Close.
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func (client *Client) Close() (err os.Error) {
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err = client.conn.Close()
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close(client.JobQueue)
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return
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err = client.conn.Close()
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close(client.JobQueue)
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return
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}
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@ -5,95 +5,95 @@
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package gearman
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import (
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"os"
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"bytes"
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// "log"
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"os"
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"bytes"
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// "log"
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)
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// Client side job
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type ClientJob struct {
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Data []byte
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Handle, UniqueId string
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magicCode, DataType uint32
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Data []byte
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Handle, UniqueId string
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magicCode, DataType uint32
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}
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// Create a new job
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func NewClientJob(magiccode, datatype uint32, data []byte) (job *ClientJob) {
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return &ClientJob{magicCode: magiccode,
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DataType: datatype,
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Data: data}
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return &ClientJob{magicCode: magiccode,
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DataType: datatype,
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Data: data}
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}
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// Decode a job from byte slice
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func DecodeClientJob(data []byte) (job *ClientJob, err os.Error) {
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if len(data) < 12 {
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err = os.NewError("Data length is too small.")
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return
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}
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datatype := byteToUint32([4]byte{data[4], data[5], data[6], data[7]})
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l := byteToUint32([4]byte{data[8], data[9], data[10], data[11]})
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if len(data[12:]) != int(l) {
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err = os.NewError("Invalid data length.")
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return
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}
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data = data[12:]
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job = NewClientJob(RES, datatype, data)
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return
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if len(data) < 12 {
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err = os.NewError("Data length is too small.")
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return
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||||
}
|
||||
datatype := byteToUint32([4]byte{data[4], data[5], data[6], data[7]})
|
||||
l := byteToUint32([4]byte{data[8], data[9], data[10], data[11]})
|
||||
if len(data[12:]) != int(l) {
|
||||
err = os.NewError("Invalid data length.")
|
||||
return
|
||||
}
|
||||
data = data[12:]
|
||||
job = NewClientJob(RES, datatype, data)
|
||||
return
|
||||
}
|
||||
|
||||
// Encode a job to byte slice
|
||||
func (job *ClientJob) Encode() (data []byte) {
|
||||
magiccode := uint32ToByte(job.magicCode)
|
||||
datatype := uint32ToByte(job.DataType)
|
||||
data = make([]byte, 0, 1024*64)
|
||||
data = append(data, magiccode[:]...)
|
||||
data = append(data, datatype[:]...)
|
||||
l := len(job.Data)
|
||||
datalength := uint32ToByte(uint32(l))
|
||||
data = append(data, datalength[:]...)
|
||||
data = append(data, job.Data...)
|
||||
return
|
||||
magiccode := uint32ToByte(job.magicCode)
|
||||
datatype := uint32ToByte(job.DataType)
|
||||
data = make([]byte, 0, 1024*64)
|
||||
data = append(data, magiccode[:]...)
|
||||
data = append(data, datatype[:]...)
|
||||
l := len(job.Data)
|
||||
datalength := uint32ToByte(uint32(l))
|
||||
data = append(data, datalength[:]...)
|
||||
data = append(data, job.Data...)
|
||||
return
|
||||
}
|
||||
|
||||
// Extract the job's result.
|
||||
func (job *ClientJob) Result() (data []byte, err os.Error) {
|
||||
switch job.DataType {
|
||||
case WORK_FAIL:
|
||||
job.Handle = string(job.Data)
|
||||
err = os.NewError("Work fail.")
|
||||
return
|
||||
case WORK_EXCEPTION:
|
||||
err = os.NewError("Work exception.")
|
||||
fallthrough
|
||||
case WORK_COMPLETE:
|
||||
s := bytes.Split(job.Data, []byte{'\x00'}, 2)
|
||||
if len(s) != 2 {
|
||||
err = os.NewError("Invalid data.")
|
||||
return
|
||||
}
|
||||
job.Handle = string(s[0])
|
||||
data = s[1]
|
||||
default:
|
||||
err = os.NewError("The job is not a result.")
|
||||
}
|
||||
return
|
||||
switch job.DataType {
|
||||
case WORK_FAIL:
|
||||
job.Handle = string(job.Data)
|
||||
err = os.NewError("Work fail.")
|
||||
return
|
||||
case WORK_EXCEPTION:
|
||||
err = os.NewError("Work exception.")
|
||||
fallthrough
|
||||
case WORK_COMPLETE:
|
||||
s := bytes.SplitN(job.Data, []byte{'\x00'}, 2)
|
||||
if len(s) != 2 {
|
||||
err = os.NewError("Invalid data.")
|
||||
return
|
||||
}
|
||||
job.Handle = string(s[0])
|
||||
data = s[1]
|
||||
default:
|
||||
err = os.NewError("The job is not a result.")
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Extract the job's update
|
||||
func (job *ClientJob) Update() (data []byte, err os.Error) {
|
||||
if job.DataType != WORK_DATA && job.DataType != WORK_WARNING {
|
||||
err = os.NewError("The job is not a update.")
|
||||
return
|
||||
}
|
||||
s := bytes.Split(job.Data, []byte{'\x00'}, 2)
|
||||
if len(s) != 2 {
|
||||
err = os.NewError("Invalid data.")
|
||||
return
|
||||
}
|
||||
if job.DataType == WORK_WARNING {
|
||||
err = os.NewError("Work warning")
|
||||
}
|
||||
job.Handle = string(s[0])
|
||||
data = s[1]
|
||||
return
|
||||
if job.DataType != WORK_DATA && job.DataType != WORK_WARNING {
|
||||
err = os.NewError("The job is not a update.")
|
||||
return
|
||||
}
|
||||
s := bytes.SplitN(job.Data, []byte{'\x00'}, 2)
|
||||
if len(s) != 2 {
|
||||
err = os.NewError("Invalid data.")
|
||||
return
|
||||
}
|
||||
if job.DataType == WORK_WARNING {
|
||||
err = os.NewError("Work warning")
|
||||
}
|
||||
job.Handle = string(s[0])
|
||||
data = s[1]
|
||||
return
|
||||
}
|
||||
|
||||
@ -10,107 +10,106 @@ The protocol was implemented by native way.
|
||||
package gearman
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"os"
|
||||
"bytes"
|
||||
"os"
|
||||
)
|
||||
|
||||
const (
|
||||
// tcp4 is tested. You can modify this to 'tcp' for both ipv4 and ipv6,
|
||||
// or 'tcp6' only for ipv6.
|
||||
TCP = "tcp4"
|
||||
// the number limited for job servers.
|
||||
WORKER_SERVER_CAP = 32
|
||||
// the number limited for functions.
|
||||
WORKER_FUNCTION_CAP = 512
|
||||
// queue size
|
||||
QUEUE_CAP = 512
|
||||
// read buffer size
|
||||
BUFFER_SIZE = 1024
|
||||
// tcp4 is tested. You can modify this to 'tcp' for both ipv4 and ipv6,
|
||||
// or 'tcp6' only for ipv6.
|
||||
TCP = "tcp4"
|
||||
// the number limited for job servers.
|
||||
WORKER_SERVER_CAP = 32
|
||||
// the number limited for functions.
|
||||
WORKER_FUNCTION_CAP = 512
|
||||
// queue size
|
||||
QUEUE_CAP = 512
|
||||
// read buffer size
|
||||
BUFFER_SIZE = 1024
|
||||
|
||||
// \x00REQ
|
||||
REQ = 5391697
|
||||
REQ_STR = "\x00REQ"
|
||||
// \x00RES
|
||||
RES = 5391699
|
||||
RES_STR = "\x00RES"
|
||||
|
||||
// \x00REQ
|
||||
REQ = 5391697
|
||||
REQ_STR = "\x00REQ"
|
||||
// \x00RES
|
||||
RES = 5391699
|
||||
RES_STR = "\x00RES"
|
||||
// package data type
|
||||
CAN_DO = 1
|
||||
CANT_DO = 2
|
||||
RESET_ABILITIES = 3
|
||||
PRE_SLEEP = 4
|
||||
NOOP = 6
|
||||
JOB_CREATED = 8
|
||||
GRAB_JOB = 9
|
||||
NO_JOB = 10
|
||||
JOB_ASSIGN = 11
|
||||
WORK_STATUS = 12
|
||||
WORK_COMPLETE = 13
|
||||
WORK_FAIL = 14
|
||||
GET_STATUS = 15
|
||||
ECHO_REQ = 16
|
||||
ECHO_RES = 17
|
||||
ERROR = 19
|
||||
STATUS_RES = 20
|
||||
SET_CLIENT_ID = 22
|
||||
CAN_DO_TIMEOUT = 23
|
||||
WORK_EXCEPTION = 25
|
||||
WORK_DATA = 28
|
||||
WORK_WARNING = 29
|
||||
GRAB_JOB_UNIQ = 30
|
||||
JOB_ASSIGN_UNIQ = 31
|
||||
|
||||
// package data type
|
||||
CAN_DO = 1
|
||||
CANT_DO = 2
|
||||
RESET_ABILITIES = 3
|
||||
PRE_SLEEP = 4
|
||||
NOOP = 6
|
||||
JOB_CREATED = 8
|
||||
GRAB_JOB = 9
|
||||
NO_JOB = 10
|
||||
JOB_ASSIGN = 11
|
||||
WORK_STATUS = 12
|
||||
WORK_COMPLETE = 13
|
||||
WORK_FAIL = 14
|
||||
GET_STATUS = 15
|
||||
ECHO_REQ = 16
|
||||
ECHO_RES = 17
|
||||
ERROR = 19
|
||||
STATUS_RES = 20
|
||||
SET_CLIENT_ID = 22
|
||||
CAN_DO_TIMEOUT = 23
|
||||
WORK_EXCEPTION = 25
|
||||
WORK_DATA = 28
|
||||
WORK_WARNING = 29
|
||||
GRAB_JOB_UNIQ = 30
|
||||
JOB_ASSIGN_UNIQ = 31
|
||||
SUBMIT_JOB = 7
|
||||
SUBMIT_JOB_BG = 18
|
||||
SUBMIT_JOB_HIGH = 21
|
||||
SUBMIT_JOB_HIGH_BG = 32
|
||||
SUBMIT_JOB_LOW = 33
|
||||
SUBMIT_JOB_LOW_BG = 34
|
||||
|
||||
SUBMIT_JOB = 7
|
||||
SUBMIT_JOB_BG = 18
|
||||
SUBMIT_JOB_HIGH = 21
|
||||
SUBMIT_JOB_HIGH_BG = 32
|
||||
SUBMIT_JOB_LOW = 33
|
||||
SUBMIT_JOB_LOW_BG = 34
|
||||
|
||||
// Job type
|
||||
// JOB_NORMAL | JOB_BG means a normal level job run in background
|
||||
// normal level
|
||||
JOB_NORMAL = 0
|
||||
// background job
|
||||
JOB_BG = 1
|
||||
// low level
|
||||
JOB_LOW = 2
|
||||
// high level
|
||||
JOB_HIGH = 4
|
||||
// Job type
|
||||
// JOB_NORMAL | JOB_BG means a normal level job run in background
|
||||
// normal level
|
||||
JOB_NORMAL = 0
|
||||
// background job
|
||||
JOB_BG = 1
|
||||
// low level
|
||||
JOB_LOW = 2
|
||||
// high level
|
||||
JOB_HIGH = 4
|
||||
)
|
||||
|
||||
// No use
|
||||
type Job interface {
|
||||
Encode() []byte
|
||||
Encode() []byte
|
||||
}
|
||||
|
||||
// Extract the error message
|
||||
func getError(data []byte) (eno os.Errno, err os.Error) {
|
||||
rel := bytes.Split(data, []byte{'\x00'}, 2)
|
||||
if len(rel) != 2 {
|
||||
err = os.NewError("The input is not a error data.")
|
||||
return
|
||||
}
|
||||
l := len(rel[0])
|
||||
eno = os.Errno(byteToUint32([4]byte{rel[0][l-4], rel[0][l-3], rel[0][l-2], rel[0][l-1]}))
|
||||
err = os.NewError(string(rel[1]))
|
||||
return
|
||||
rel := bytes.SplitN(data, []byte{'\x00'}, 2)
|
||||
if len(rel) != 2 {
|
||||
err = os.NewError("The input is not a error data.")
|
||||
return
|
||||
}
|
||||
l := len(rel[0])
|
||||
eno = os.Errno(byteToUint32([4]byte{rel[0][l-4], rel[0][l-3], rel[0][l-2], rel[0][l-1]}))
|
||||
err = os.NewError(string(rel[1]))
|
||||
return
|
||||
}
|
||||
|
||||
// Decode [4]byte to uint32
|
||||
func byteToUint32(buf [4]byte) uint32 {
|
||||
return uint32(buf[0])<<24 +
|
||||
uint32(buf[1])<<16 +
|
||||
uint32(buf[2])<<8 +
|
||||
uint32(buf[3])
|
||||
return uint32(buf[0])<<24 +
|
||||
uint32(buf[1])<<16 +
|
||||
uint32(buf[2])<<8 +
|
||||
uint32(buf[3])
|
||||
}
|
||||
|
||||
// Encode uint32 to [4]byte
|
||||
func uint32ToByte(i uint32) (data [4]byte) {
|
||||
data[0] = byte((i >> 24) & 0xff)
|
||||
data[1] = byte((i >> 16) & 0xff)
|
||||
data[2] = byte((i >> 8) & 0xff)
|
||||
data[3] = byte(i & 0xff)
|
||||
return
|
||||
data[0] = byte((i >> 24) & 0xff)
|
||||
data[1] = byte((i >> 16) & 0xff)
|
||||
data[2] = byte((i >> 8) & 0xff)
|
||||
data[3] = byte(i & 0xff)
|
||||
return
|
||||
}
|
||||
|
||||
@ -5,10 +5,10 @@
|
||||
package gearman
|
||||
|
||||
import (
|
||||
"os"
|
||||
"sync"
|
||||
"bytes"
|
||||
// "log"
|
||||
"os"
|
||||
"sync"
|
||||
"bytes"
|
||||
// "log"
|
||||
)
|
||||
|
||||
// The definition of the callback function.
|
||||
@ -35,125 +35,124 @@ func foobar(job *WorkerJob) (data []byte, err os.Error) {
|
||||
}
|
||||
*/
|
||||
type Worker struct {
|
||||
clients []*jobClient
|
||||
functions JobFunctionMap
|
||||
clients []*jobClient
|
||||
functions JobFunctionMap
|
||||
|
||||
running bool
|
||||
incoming chan *WorkerJob
|
||||
mutex sync.Mutex
|
||||
JobQueue chan *WorkerJob
|
||||
ErrQueue chan os.Error
|
||||
running bool
|
||||
incoming chan *WorkerJob
|
||||
mutex sync.Mutex
|
||||
JobQueue chan *WorkerJob
|
||||
ErrQueue chan os.Error
|
||||
}
|
||||
|
||||
// Get a new worker
|
||||
func NewWorker() (worker *Worker) {
|
||||
worker = &Worker{
|
||||
// job server list
|
||||
clients: make([]*jobClient, 0, WORKER_SERVER_CAP),
|
||||
// function list
|
||||
functions: make(JobFunctionMap),
|
||||
incoming: make(chan *WorkerJob, QUEUE_CAP),
|
||||
JobQueue: make(chan *WorkerJob, QUEUE_CAP),
|
||||
ErrQueue: make(chan os.Error, QUEUE_CAP),
|
||||
running: true,
|
||||
}
|
||||
return
|
||||
worker = &Worker{
|
||||
// job server list
|
||||
clients: make([]*jobClient, 0, WORKER_SERVER_CAP),
|
||||
// function list
|
||||
functions: make(JobFunctionMap),
|
||||
incoming: make(chan *WorkerJob, QUEUE_CAP),
|
||||
JobQueue: make(chan *WorkerJob, QUEUE_CAP),
|
||||
ErrQueue: make(chan os.Error, QUEUE_CAP),
|
||||
running: true,
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Add a server. The addr should be 'host:port' format.
|
||||
// The connection is established at this time.
|
||||
func (worker *Worker) AddServer(addr string) (err os.Error) {
|
||||
worker.mutex.Lock()
|
||||
defer worker.mutex.Unlock()
|
||||
worker.mutex.Lock()
|
||||
defer worker.mutex.Unlock()
|
||||
|
||||
if len(worker.clients) == cap(worker.clients) {
|
||||
return os.NewError("There were too many clients.")
|
||||
}
|
||||
if len(worker.clients) == cap(worker.clients) {
|
||||
return os.NewError("There were too many clients.")
|
||||
}
|
||||
|
||||
// Create a new job server's client as a agent of server
|
||||
server, err := newJobClient(addr, worker)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
// Create a new job server's client as a agent of server
|
||||
server, err := newJobClient(addr, worker)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
n := len(worker.clients)
|
||||
worker.clients = worker.clients[0 : n+1]
|
||||
worker.clients[n] = server
|
||||
return
|
||||
n := len(worker.clients)
|
||||
worker.clients = worker.clients[0 : n+1]
|
||||
worker.clients[n] = server
|
||||
return
|
||||
}
|
||||
|
||||
|
||||
// Add a function.
|
||||
// Plz added job servers first, then functions.
|
||||
// The API will tell every connected job server that 'I can do this'
|
||||
func (worker *Worker) AddFunction(funcname string,
|
||||
f JobFunction, timeout uint32) (err os.Error) {
|
||||
if len(worker.clients) < 1 {
|
||||
return os.NewError("Did not connect to Job Server.")
|
||||
}
|
||||
worker.mutex.Lock()
|
||||
defer worker.mutex.Unlock()
|
||||
worker.functions[funcname] = f
|
||||
if len(worker.clients) < 1 {
|
||||
return os.NewError("Did not connect to Job Server.")
|
||||
}
|
||||
worker.mutex.Lock()
|
||||
defer worker.mutex.Unlock()
|
||||
worker.functions[funcname] = f
|
||||
|
||||
var datatype uint32
|
||||
var data []byte
|
||||
if timeout == 0 {
|
||||
datatype = CAN_DO
|
||||
data = []byte(funcname)
|
||||
} else {
|
||||
datatype = CAN_DO_TIMEOUT
|
||||
data = []byte(funcname + "\x00")
|
||||
t := uint32ToByte(timeout)
|
||||
data = append(data, t[:]...)
|
||||
}
|
||||
job := NewWorkerJob(REQ, datatype, data)
|
||||
worker.WriteJob(job)
|
||||
return
|
||||
var datatype uint32
|
||||
var data []byte
|
||||
if timeout == 0 {
|
||||
datatype = CAN_DO
|
||||
data = []byte(funcname)
|
||||
} else {
|
||||
datatype = CAN_DO_TIMEOUT
|
||||
data = []byte(funcname + "\x00")
|
||||
t := uint32ToByte(timeout)
|
||||
data = append(data, t[:]...)
|
||||
}
|
||||
job := NewWorkerJob(REQ, datatype, data)
|
||||
worker.WriteJob(job)
|
||||
return
|
||||
}
|
||||
|
||||
// Remove a function.
|
||||
// Tell job servers 'I can not do this now' at the same time.
|
||||
func (worker *Worker) RemoveFunction(funcname string) (err os.Error) {
|
||||
worker.mutex.Lock()
|
||||
defer worker.mutex.Unlock()
|
||||
worker.mutex.Lock()
|
||||
defer worker.mutex.Unlock()
|
||||
|
||||
if worker.functions[funcname] == nil {
|
||||
return os.NewError("No function named: " + funcname)
|
||||
}
|
||||
worker.functions[funcname] = nil, false
|
||||
job := NewWorkerJob(REQ, CANT_DO, []byte(funcname))
|
||||
worker.WriteJob(job)
|
||||
return
|
||||
if worker.functions[funcname] == nil {
|
||||
return os.NewError("No function named: " + funcname)
|
||||
}
|
||||
worker.functions[funcname] = nil, false
|
||||
job := NewWorkerJob(REQ, CANT_DO, []byte(funcname))
|
||||
worker.WriteJob(job)
|
||||
return
|
||||
}
|
||||
|
||||
// Main loop
|
||||
func (worker *Worker) Work() {
|
||||
for _, v := range worker.clients {
|
||||
go v.Work()
|
||||
}
|
||||
for worker.running {
|
||||
select {
|
||||
case job := <-worker.incoming:
|
||||
if job == nil {
|
||||
break
|
||||
}
|
||||
switch job.DataType {
|
||||
case NO_JOB:
|
||||
// do nothing
|
||||
case ERROR:
|
||||
_, err := getError(job.Data)
|
||||
worker.ErrQueue <- err
|
||||
case JOB_ASSIGN, JOB_ASSIGN_UNIQ:
|
||||
go func() {
|
||||
if err := worker.exec(job); err != nil {
|
||||
worker.ErrQueue <- err
|
||||
}
|
||||
}()
|
||||
default:
|
||||
worker.JobQueue <- job
|
||||
}
|
||||
}
|
||||
}
|
||||
for _, v := range worker.clients {
|
||||
go v.Work()
|
||||
}
|
||||
for worker.running {
|
||||
select {
|
||||
case job := <-worker.incoming:
|
||||
if job == nil {
|
||||
break
|
||||
}
|
||||
switch job.DataType {
|
||||
case NO_JOB:
|
||||
// do nothing
|
||||
case ERROR:
|
||||
_, err := getError(job.Data)
|
||||
worker.ErrQueue <- err
|
||||
case JOB_ASSIGN, JOB_ASSIGN_UNIQ:
|
||||
go func() {
|
||||
if err := worker.exec(job); err != nil {
|
||||
worker.ErrQueue <- err
|
||||
}
|
||||
}()
|
||||
default:
|
||||
worker.JobQueue <- job
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Get the last job in queue.
|
||||
@ -161,98 +160,98 @@ func (worker *Worker) Work() {
|
||||
// the last one will be returned,
|
||||
// the others will be lost.
|
||||
func (worker *Worker) LastJob() (job *WorkerJob) {
|
||||
if l := len(worker.JobQueue); l != 1 {
|
||||
if l == 0 {
|
||||
return
|
||||
}
|
||||
for i := 0; i < l-1; i++ {
|
||||
<-worker.JobQueue
|
||||
}
|
||||
}
|
||||
return <-worker.JobQueue
|
||||
if l := len(worker.JobQueue); l != 1 {
|
||||
if l == 0 {
|
||||
return
|
||||
}
|
||||
for i := 0; i < l-1; i++ {
|
||||
<-worker.JobQueue
|
||||
}
|
||||
}
|
||||
return <-worker.JobQueue
|
||||
}
|
||||
|
||||
// Close.
|
||||
func (worker *Worker) Close() (err os.Error) {
|
||||
worker.running = false
|
||||
for _, v := range worker.clients {
|
||||
err = v.Close()
|
||||
}
|
||||
close(worker.incoming)
|
||||
return err
|
||||
worker.running = false
|
||||
for _, v := range worker.clients {
|
||||
err = v.Close()
|
||||
}
|
||||
close(worker.incoming)
|
||||
return err
|
||||
}
|
||||
|
||||
// Write a job to job server.
|
||||
// Here, the job's mean is not the oraginal mean.
|
||||
// Just looks like a network package for job's result or tell job server, there was a fail.
|
||||
func (worker *Worker) WriteJob(job *WorkerJob) (err os.Error) {
|
||||
e := make(chan os.Error)
|
||||
for _, v := range worker.clients {
|
||||
go func() {
|
||||
e <- v.WriteJob(job)
|
||||
}()
|
||||
}
|
||||
return <-e
|
||||
e := make(chan os.Error)
|
||||
for _, v := range worker.clients {
|
||||
go func() {
|
||||
e <- v.WriteJob(job)
|
||||
}()
|
||||
}
|
||||
return <-e
|
||||
}
|
||||
|
||||
// Send a something out, get the samething back.
|
||||
func (worker *Worker) Echo(data []byte) (err os.Error) {
|
||||
job := NewWorkerJob(REQ, ECHO_REQ, data)
|
||||
return worker.WriteJob(job)
|
||||
job := NewWorkerJob(REQ, ECHO_REQ, data)
|
||||
return worker.WriteJob(job)
|
||||
}
|
||||
|
||||
// Remove all of functions.
|
||||
// Both from the worker or job servers.
|
||||
func (worker *Worker) Reset() (err os.Error) {
|
||||
job := NewWorkerJob(REQ, RESET_ABILITIES, nil)
|
||||
err = worker.WriteJob(job)
|
||||
worker.functions = make(JobFunctionMap)
|
||||
return
|
||||
job := NewWorkerJob(REQ, RESET_ABILITIES, nil)
|
||||
err = worker.WriteJob(job)
|
||||
worker.functions = make(JobFunctionMap)
|
||||
return
|
||||
}
|
||||
|
||||
// Set the worker's unique id.
|
||||
func (worker *Worker) SetId(id string) (err os.Error) {
|
||||
job := NewWorkerJob(REQ, SET_CLIENT_ID, []byte(id))
|
||||
return worker.WriteJob(job)
|
||||
job := NewWorkerJob(REQ, SET_CLIENT_ID, []byte(id))
|
||||
return worker.WriteJob(job)
|
||||
}
|
||||
|
||||
// Execute the job. And send back the result.
|
||||
func (worker *Worker) exec(job *WorkerJob) (err os.Error) {
|
||||
var limit int
|
||||
if job.DataType == JOB_ASSIGN {
|
||||
limit = 3
|
||||
} else {
|
||||
limit = 4
|
||||
}
|
||||
jobdata := bytes.Split(job.Data, []byte{'\x00'}, limit)
|
||||
job.Handle = string(jobdata[0])
|
||||
funcname := string(jobdata[1])
|
||||
if job.DataType == JOB_ASSIGN {
|
||||
job.Data = jobdata[2]
|
||||
} else {
|
||||
job.UniqueId = string(jobdata[2])
|
||||
job.Data = jobdata[3]
|
||||
}
|
||||
f := worker.functions[funcname]
|
||||
if f == nil {
|
||||
return os.NewError("function is nil")
|
||||
}
|
||||
result, err := f(job)
|
||||
var datatype uint32
|
||||
if err == nil {
|
||||
datatype = WORK_COMPLETE
|
||||
} else {
|
||||
if result == nil {
|
||||
datatype = WORK_FAIL
|
||||
} else {
|
||||
datatype = WORK_EXCEPTION
|
||||
}
|
||||
}
|
||||
var limit int
|
||||
if job.DataType == JOB_ASSIGN {
|
||||
limit = 3
|
||||
} else {
|
||||
limit = 4
|
||||
}
|
||||
jobdata := bytes.SplitN(job.Data, []byte{'\x00'}, limit)
|
||||
job.Handle = string(jobdata[0])
|
||||
funcname := string(jobdata[1])
|
||||
if job.DataType == JOB_ASSIGN {
|
||||
job.Data = jobdata[2]
|
||||
} else {
|
||||
job.UniqueId = string(jobdata[2])
|
||||
job.Data = jobdata[3]
|
||||
}
|
||||
f := worker.functions[funcname]
|
||||
if f == nil {
|
||||
return os.NewError("function is nil")
|
||||
}
|
||||
result, err := f(job)
|
||||
var datatype uint32
|
||||
if err == nil {
|
||||
datatype = WORK_COMPLETE
|
||||
} else {
|
||||
if result == nil {
|
||||
datatype = WORK_FAIL
|
||||
} else {
|
||||
datatype = WORK_EXCEPTION
|
||||
}
|
||||
}
|
||||
|
||||
job.magicCode = REQ
|
||||
job.DataType = datatype
|
||||
job.Data = result
|
||||
job.magicCode = REQ
|
||||
job.DataType = datatype
|
||||
job.Data = result
|
||||
|
||||
worker.WriteJob(job)
|
||||
return
|
||||
worker.WriteJob(job)
|
||||
return
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user