update

src/AllocatorFIFO.go

@@ -3,18 +3,21 @@ package main
 import (
 	"sync"
 	"time"
-	"log"
-	"io/ioutil"
-	"encoding/json"
 )
 
 type AllocatorFIFO struct {
+	history    []*Job
 	queue      []Job
 	mu         sync.Mutex
 	scheduling sync.Mutex
+
+	jobs map[string]*JobManager
 }
 
 func (allocator *AllocatorFIFO) start() {
+	allocator.jobs = map[string]*JobManager{}
+	allocator.history = []*Job{}
+
 	go func() {
 		for {
 			//fmt.Print("Scheduling ")
@@ -27,6 +30,14 @@ func (allocator *AllocatorFIFO) start() {
 				jm.job = allocator.queue[0]
 				allocator.queue = allocator.queue[1:]
 				jm.allocator = allocator
+				allocator.jobs[jm.job.Name] = &jm
+
+				for i := range allocator.history {
+					if allocator.history[i].Name == jm.job.Name {
+						allocator.history[i].Status = Starting
+					}
+				}
+
 				go func() {
 					jm.start()
 				}()
@@ -38,8 +49,21 @@ func (allocator *AllocatorFIFO) start() {
 	}()
 }
 
-func (allocator *AllocatorFIFO) ack() {
+func (allocator *AllocatorFIFO) ack(job *Job) {
 	allocator.scheduling.Unlock()
+	for i := range allocator.history {
+		if allocator.history[i].Name == job.Name {
+			allocator.history[i].Status = Running
+		}
+	}
+}
+
+func (allocator *AllocatorFIFO) finish(job *Job) {
+	for i := range allocator.history {
+		if allocator.history[i].Name == job.Name {
+			allocator.history[i].Status = Finished
+		}
+	}
 }
 
 func (allocator *AllocatorFIFO) schedule(job Job) {
@@ -47,6 +71,7 @@ func (allocator *AllocatorFIFO) schedule(job Job) {
 	defer allocator.mu.Unlock()
 
 	allocator.queue = append(allocator.queue, job)
+	allocator.history = append(allocator.history, &job)
 }
 
 func (allocator *AllocatorFIFO) requestResource(task Task) MsgAgent {
@@ -91,63 +116,21 @@ func (allocator *AllocatorFIFO) returnResource(agent MsgAgent) {
 }
 
 func (allocator *AllocatorFIFO) status(jobName string) MsgJobStatus {
-
-	var tasksStatus []TaskStatus
-	tasksStatus = append(tasksStatus, TaskStatus{Id: "8b9b665fc4f1"})
-	tasksStatus = append(tasksStatus, TaskStatus{Id: "4a4aeee2c5f9"})
-
-	for i, taskStatus := range tasksStatus {
-		spider := Spider{}
-		spider.Method = "GET"
-		spider.URL = "http://kafka_node1:8000/status?id=" + taskStatus.Id
-
-		err := spider.do()
-		if err != nil {
-			continue
+	jm, ok := allocator.jobs[jobName]
+	if !ok {
+		return MsgJobStatus{Code: 1, Error: "Job not exist!"}
+	}
+	return jm.status()
 }
 
-		resp := spider.getResponse()
-		defer resp.Body.Close()
-
-		body, err := ioutil.ReadAll(resp.Body)
-		if err != nil {
-			continue
+func (allocator *AllocatorFIFO) logs(jobName string, taskName string) MsgLog {
+	jm, ok := allocator.jobs[jobName]
+	if !ok {
+		return MsgLog{Code: 1, Error: "Job not exist!"}
+	}
+	return jm.logs(taskName)
 }
 
-		var res MsgTaskStatus
-		err = json.Unmarshal([]byte(string(body)), &res)
-		if err != nil {
-			continue
-		}
-		tasksStatus[i] = res.Status
-	}
-
-	return MsgJobStatus{Status: tasksStatus}
-}
-
-func (allocator *AllocatorFIFO) logs(taskName string) MsgLog {
-	spider := Spider{}
-	spider.Method = "GET"
-	spider.URL = "http://kafka_node1:8000/logs?id=" + taskName
-
-	err := spider.do()
-	if err != nil {
-		return MsgLog{Code: 1, Error: err.Error()}
-	}
-
-	resp := spider.getResponse()
-	defer resp.Body.Close()
-
-	body, err := ioutil.ReadAll(resp.Body)
-	if err != nil {
-		return MsgLog{Code: 1, Error: err.Error()}
-	}
-
-	var res MsgLog
-	err = json.Unmarshal([]byte(string(body)), &res)
-	if err != nil {
-		log.Println(err)
-		return MsgLog{Code: 1, Error: "Unknown"}
-	}
-	return res
+func (allocator *AllocatorFIFO) listJobs() MsgJobList {
+	return MsgJobList{Code: 0, Jobs: allocator.history}
 }

src/job_manager.go

@@ -18,6 +18,7 @@ type JobManager struct {
 
 func (jm *JobManager) start() {
 	log.Println("start job ", jm.job.Name)
+	jm.jobStatus = JobStatus{Name: jm.job.Name, tasks: map[string]TaskStatus{}}
 
 	/* request for resources */
 	for i := range jm.job.Tasks {
@@ -62,14 +63,16 @@ func (jm *JobManager) start() {
 		jm.jobStatus.tasks[jm.job.Tasks[i].Name] = TaskStatus{Id: res.Id}
 	}
 
-	jm.allocator.ack()
+	jm.allocator.ack(&jm.job)
 
 	/* monitor job execution */
 	for {
 		res := jm.status()
+		flag := false
 		for i := range res.Status {
 			if res.Status[i].Status == "running" {
 				log.Println(jm.job.Name, "-", i, " is running")
+				flag = true
 			} else {
 				log.Println(jm.job.Name, "-", i, " ", res.Status[i].Status)
 
@@ -79,16 +82,20 @@ func (jm *JobManager) start() {
 				jm.allocator.returnResource(jm.resources[i])
 			}
 		}
+		if !flag {
+			break
+		}
 		time.Sleep(time.Second * 10)
 	}
 
+	jm.allocator.finish(&jm.job)
 	log.Println("finish job", jm.job.Name)
 }
 
 func (jm *JobManager) logs(taskName string) MsgLog {
 	spider := Spider{}
 	spider.Method = "GET"
-	spider.URL = "http://127.0.0.1:8000/logs?id=" + taskName
+	spider.URL = "http://kafka_node1:8000/logs?id=" + taskName
 
 	err := spider.do()
 	if err != nil {
@@ -113,12 +120,11 @@ func (jm *JobManager) logs(taskName string) MsgLog {
 }
 
 func (jm *JobManager) status() MsgJobStatus {
-
 	var tasksStatus []TaskStatus
 	for _, taskStatus := range jm.jobStatus.tasks {
 		spider := Spider{}
 		spider.Method = "GET"
-		spider.URL = "http://127.0.0.1:8000/status?id=" + taskStatus.Id
+		spider.URL = "http://kafka_node1:8000/status?id=" + taskStatus.Id
 
 		err := spider.do()
 		if err != nil {

src/main.go

@@ -59,7 +59,14 @@ func serverAPI(w http.ResponseWriter, r *http.Request) {
 	case "task_logs":
 		fmt.Println("task_logs")
 		fmt.Println(r.URL.Query().Get("id"))
-		js, _ := json.Marshal(allocator.logs(r.URL.Query().Get("id")))
+		js, _ := json.Marshal(allocator.logs(r.URL.Query().Get("job"), r.URL.Query().Get("task")))
+		w.Header().Set("Content-Type", "application/json")
+		w.Write(js)
+		break
+
+	case "jobs":
+		fmt.Println("job_list")
+		js, _ := json.Marshal(allocator.listJobs())
 		w.Header().Set("Content-Type", "application/json")
 		w.Write(js)
 		break

src/util.go

@@ -8,6 +8,20 @@ import (
 	"net/http"
 )
 
+const (
+	Created  = 0
+	Starting = 1
+	Running  = 2
+	Stopped  = 3
+	Finished = 4
+)
+
+type MsgJobList struct {
+	Code  int    `json:"code"`
+	Error string `json:"error"`
+	Jobs  []*Job `json:"jobs"`
+}
+
 type MsgLog struct {
 	Code  int    `json:"code"`
 	Error string `json:"error"`