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task.go
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task.go
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package api
import (
"bytes"
"encoding/base64"
"encoding/json"
"errors"
"github.com/dchest/siphash"
"github.com/simon987/task_tracker/storage"
"github.com/sirupsen/logrus"
"strconv"
"time"
)
func (api *WebAPI) SubmitTask(r *Request) {
worker, err := api.validateSecret(r)
if err != nil {
r.Json(JsonResponse{
Ok: false,
Message: err.Error(),
}, 401)
return
}
createReq := &SubmitTaskRequest{}
err = json.Unmarshal(r.Ctx.Request.Body(), createReq)
if err != nil {
r.Json(JsonResponse{
Ok: false,
Message: "Could not parse request",
}, 400)
return
}
if createReq.VerificationCount == 0 {
createReq.VerificationCount = 1
}
if !createReq.IsValid() {
logrus.WithFields(logrus.Fields{
"req": createReq,
}).Warn("Invalid task")
r.Json(JsonResponse{
Ok: false,
Message: "Invalid task",
}, 400)
return
}
task := &storage.Task{
MaxRetries: createReq.MaxRetries,
Recipe: string(createReq.Recipe),
Priority: createReq.Priority,
AssignTime: 0,
MaxAssignTime: createReq.MaxAssignTime,
VerificationCount: createReq.VerificationCount,
}
reservation := api.ReserveSubmit(createReq.Project, 1)
if reservation == nil {
r.Json(JsonResponse{
Ok: false,
Message: "Project not found",
}, 404)
return
}
delay := reservation.DelayFrom(time.Now()).Seconds()
if delay > 0 {
r.Json(JsonResponse{
Ok: false,
Message: "Too many requests",
RateLimitDelay: delay,
}, 429)
reservation.Cancel()
return
}
if len(createReq.UniqueString) != 0 {
createReq.Hash64 = int64(siphash.Hash(1, 2, []byte(createReq.UniqueString)))
}
err = api.Database.SaveTask(task, createReq.Project, createReq.Hash64, worker.Id)
if err != nil {
r.Json(JsonResponse{
Ok: false,
Message: err.Error(),
}, 400)
reservation.Cancel()
return
}
r.OkJson(JsonResponse{
Ok: true,
})
}
func (api *WebAPI) BulkSubmitTask(r *Request) {
worker, err := api.validateSecret(r)
if err != nil {
r.Json(JsonResponse{
Ok: false,
Message: err.Error(),
}, 401)
return
}
createReq := &BulkSubmitTaskRequest{}
err = json.Unmarshal(r.Ctx.Request.Body(), createReq)
if err != nil || createReq.Requests == nil || len(createReq.Requests) == 0 {
r.Json(JsonResponse{
Ok: false,
Message: "Could not parse request",
}, 400)
return
}
if !createReq.IsValid() {
logrus.WithFields(logrus.Fields{
"req": createReq,
}).Warn("Invalid request")
r.Json(JsonResponse{
Ok: false,
Message: "Invalid request",
}, 400)
return
}
saveRequests := make([]storage.SaveTaskRequest, len(createReq.Requests))
projectId := createReq.Requests[0].Project
for i, req := range createReq.Requests {
if req.Project != projectId {
r.Json(JsonResponse{
Ok: false,
Message: "All the tasks in a bulk submit must be of the same project",
}, 400)
return
}
if len(req.UniqueString) != 0 {
req.Hash64 = int64(siphash.Hash(1, 2, []byte(req.UniqueString)))
}
if req.VerificationCount == 0 {
req.VerificationCount = 1
}
saveRequests[i] = storage.SaveTaskRequest{
Task: &storage.Task{
MaxRetries: req.MaxRetries,
Recipe: string(req.Recipe),
Priority: req.Priority,
AssignTime: 0,
MaxAssignTime: req.MaxAssignTime,
VerificationCount: req.VerificationCount,
},
Project: projectId,
WorkerId: worker.Id,
Hash64: req.Hash64,
}
}
reservation := api.ReserveSubmit(projectId, len(saveRequests))
if reservation == nil {
r.Json(JsonResponse{
Ok: false,
Message: "Project not found",
}, 404)
return
}
delay := reservation.DelayFrom(time.Now()).Seconds()
if delay > 0 {
r.Json(JsonResponse{
Ok: false,
Message: "Too many requests",
RateLimitDelay: delay,
}, 429)
reservation.Cancel()
return
}
saveErrors := api.Database.BulkSaveTask(saveRequests)
if saveErrors == nil {
r.Json(JsonResponse{
Ok: false,
Message: "Fatal error during bulk insert, see server logs",
}, 400)
reservation.Cancel()
return
}
logrus.Info(saveErrors)
r.OkJson(JsonResponse{
Ok: true,
})
}
func (api *WebAPI) GetTaskFromProject(r *Request) {
worker, err := api.validateSecret(r)
if err != nil {
r.Json(JsonResponse{
Ok: false,
Message: err.Error(),
}, 403)
return
}
if worker.Paused {
r.Json(JsonResponse{
Ok: false,
Message: "A manager has paused you",
}, 400)
return
}
project, err := strconv.ParseInt(r.Ctx.UserValue("project").(string), 10, 64)
if err != nil || project <= 0 {
r.Json(JsonResponse{
Ok: false,
Message: "Invalid project id",
}, 400)
return
}
reservation := api.ReserveAssign(project)
if reservation == nil {
r.Json(JsonResponse{
Ok: false,
Message: "Project not found",
}, 404)
return
}
delay := reservation.DelayFrom(time.Now()).Seconds()
if delay > 0 {
r.Json(JsonResponse{
Ok: false,
Message: "Too many requests",
RateLimitDelay: delay,
}, 429)
reservation.Cancel()
return
}
task := api.Database.GetTaskFromProject(worker, project)
if task == nil {
r.OkJson(JsonResponse{
Ok: false,
Message: "No task available",
})
reservation.CancelAt(time.Now())
return
}
r.OkJson(JsonResponse{
Ok: true,
Content: GetTaskResponse{
Task: task,
},
})
}
func (api *WebAPI) validateSecret(r *Request) (*storage.Worker, error) {
widStr := string(r.Ctx.Request.Header.Peek("X-Worker-Id"))
secretHeader := r.Ctx.Request.Header.Peek("X-Secret")
if widStr == "" {
return nil, errors.New("worker id not specified")
}
if len(secretHeader) == 0 {
return nil, errors.New("secret is not specified")
}
wid, err := strconv.ParseInt(widStr, 10, 64)
if err != nil {
logrus.WithError(err).WithFields(logrus.Fields{
"wid": widStr,
}).Warn("Can't parse wid")
return nil, err
}
worker := api.Database.GetWorker(wid)
if worker == nil {
logrus.WithError(err).WithFields(logrus.Fields{
"wid": widStr,
}).Warn("Worker id does not match any valid worker")
return nil, errors.New("worker id does not match any valid worker")
}
secret := make([]byte, base64.StdEncoding.EncodedLen(len(worker.Secret)))
secretLen, _ := base64.StdEncoding.Decode(secret, secretHeader)
matches := bytes.Equal(worker.Secret, secret[:secretLen])
if !matches {
return nil, errors.New("invalid secret")
}
return worker, nil
}
func (api *WebAPI) ReleaseTask(r *Request) {
worker, err := api.validateSecret(r)
if err != nil {
r.Json(JsonResponse{
Ok: false,
Message: err.Error(),
}, 403)
return
}
req := &ReleaseTaskRequest{}
err = json.Unmarshal(r.Ctx.Request.Body(), req)
if err != nil {
r.Json(JsonResponse{
Ok: false,
Message: "Could not parse request",
}, 400)
return
}
if !req.IsValid() {
r.Json(JsonResponse{
Ok: false,
Message: "Invalid request",
}, 400)
return
}
res := api.Database.ReleaseTask(req.TaskId, worker.Id, req.Result, req.Verification)
response := JsonResponse{
Ok: true,
Content: ReleaseTaskResponse{
Updated: res,
},
}
if !res {
response.Message = "Task was not marked as closed"
}
logrus.WithFields(logrus.Fields{
"releaseTaskRequest": req,
"taskUpdated": res,
}).Trace("Release task")
r.OkJson(response)
}