Golang Context.RespondWithPaginatedData方法代碼示例

// GET: /work
// checkout a workunit with earliest submission time
// to-do: to support more options for workunit checkout
func (cr *WorkController) ReadMany(cx *goweb.Context) {
	LogRequest(cx.Request)

	// Gather query params
	query := &Query{Li: cx.Request.URL.Query()}

	if !query.Has("client") { //view workunits
		// Try to authenticate user.
		u, err := request.Authenticate(cx.Request)
		if err != nil && err.Error() != e.NoAuth {
			cx.RespondWithErrorMessage(err.Error(), http.StatusUnauthorized)
			return
		}

		// If no auth was provided, and anonymous read is allowed, use the public user
		if u == nil {
			if conf.ANON_READ == true {
				u = &user.User{Uuid: "public"}
			} else {
				cx.RespondWithErrorMessage(e.NoAuth, http.StatusUnauthorized)
				return
			}
		}

		// get pagination options
		limit := conf.DEFAULT_PAGE_SIZE
		offset := 0
		order := "info.submittime"
		direction := "desc"
		if query.Has("limit") {
			limit, err = strconv.Atoi(query.Value("limit"))
			if err != nil {
				cx.RespondWithErrorMessage(err.Error(), http.StatusBadRequest)
				return
			}
		}
		if query.Has("offset") {
			offset, err = strconv.Atoi(query.Value("offset"))
			if err != nil {
				cx.RespondWithErrorMessage(err.Error(), http.StatusBadRequest)
				return
			}
		}
		if query.Has("order") {
			order = query.Value("order")
		}
		if query.Has("direction") {
			direction = query.Value("direction")
		}

		var workunits []*core.Workunit
		if query.Has("state") {
			workunits = core.QMgr.ShowWorkunitsByUser(query.Value("state"), u)
		} else {
			workunits = core.QMgr.ShowWorkunitsByUser("", u)
		}

		// if using query syntax then do pagination and sorting
		if query.Has("query") {
			filtered_work := []core.Workunit{}
			sorted_work := core.WorkunitsSortby{order, direction, workunits}
			sort.Sort(sorted_work)

			skip := 0
			count := 0
			for _, w := range sorted_work.Workunits {
				if skip < offset {
					skip += 1
					continue
				}
				filtered_work = append(filtered_work, *w)
				count += 1
				if count == limit {
					break
				}
			}
			cx.RespondWithPaginatedData(filtered_work, limit, offset, len(sorted_work.Workunits))
			return
		} else {
			cx.RespondWithData(workunits)
			return
		}
	}

	cg, err := request.AuthenticateClientGroup(cx.Request)
	if err != nil {
		if err.Error() == e.NoAuth || err.Error() == e.UnAuth || err.Error() == e.InvalidAuth {
			if conf.CLIENT_AUTH_REQ == true {
				cx.RespondWithError(http.StatusUnauthorized)
				return
			}
		} else {
			logger.Error("[email protected]: " + err.Error())
			cx.RespondWithError(http.StatusInternalServerError)
			return
		}
	}
//.........這裏部分代碼省略.........

//.........這裏部分代碼省略.........
	}

	//getting real active (in-progress) job (some jobs are in "submitted" states but not in the queue,
	//because they may have failed and not recovered from the mongodb).
	if query.Has("active") {
		err := jobs.GetAll(q, order, direction)
		if err != nil {
			logger.Error("err " + err.Error())
			cx.RespondWithErrorMessage(err.Error(), http.StatusBadRequest)
			return
		}

		filtered_jobs := []core.Job{}
		act_jobs := core.QMgr.GetActiveJobs()
		length := jobs.Length()

		skip := 0
		count := 0
		for i := 0; i < length; i++ {
			job := jobs.GetJobAt(i)
			if _, ok := act_jobs[job.Id]; ok {
				if skip < offset {
					skip += 1
					continue
				}
				job.Registered = true
				filtered_jobs = append(filtered_jobs, job)
				count += 1
				if count == limit {
					break
				}
			}
		}
		cx.RespondWithPaginatedData(filtered_jobs, limit, offset, len(act_jobs))
		return
	}

	//geting suspended job in the current queue (excluding jobs in db but not in qmgr)
	if query.Has("suspend") {
		err := jobs.GetAll(q, order, direction)
		if err != nil {
			logger.Error("err " + err.Error())
			cx.RespondWithError(http.StatusBadRequest)
			return
		}

		filtered_jobs := []core.Job{}
		suspend_jobs := core.QMgr.GetSuspendJobs()
		length := jobs.Length()

		skip := 0
		count := 0
		for i := 0; i < length; i++ {
			job := jobs.GetJobAt(i)
			if _, ok := suspend_jobs[job.Id]; ok {
				if skip < offset {
					skip += 1
					continue
				}
				job.Registered = true
				filtered_jobs = append(filtered_jobs, job)
				count += 1
				if count == limit {
					break
				}
			}

// GET: /clientgroup
func (cr *ClientGroupController) ReadMany(cx *goweb.Context) {
	LogRequest(cx.Request)

	// Try to authenticate user.
	u, err := request.Authenticate(cx.Request)
	if err != nil && err.Error() != e.NoAuth {
		cx.RespondWithErrorMessage(err.Error(), http.StatusUnauthorized)
		return
	}

	// If no auth was provided and ANON_CG_READ is true, use the public user.
	// Otherwise if no auth was provided, throw an error.
	// Otherwise, proceed with retrieval of the clientgroups using the user.
	if u == nil {
		if conf.ANON_CG_READ == true {
			u = &user.User{Uuid: "public"}
		} else {
			cx.RespondWithErrorMessage(e.UnAuth, http.StatusUnauthorized)
			return
		}
	}

	// Gather query params
	query := &Query{Li: cx.Request.URL.Query()}

	// Setup query and clientgroups objects
	q := bson.M{}
	cgs := core.ClientGroups{}

	// Add authorization checking to query if the user is not an admin
	if u.Admin == false {
		q["$or"] = []bson.M{bson.M{"acl.read": "public"}, bson.M{"acl.read": u.Uuid}, bson.M{"acl.owner": u.Uuid}}
	}

	limit := conf.DEFAULT_PAGE_SIZE
	offset := 0
	order := "last_modified"
	direction := "desc"
	if query.Has("limit") {
		limit, err = strconv.Atoi(query.Value("limit"))
		if err != nil {
			cx.RespondWithErrorMessage(err.Error(), http.StatusBadRequest)
			return
		}
	}
	if query.Has("offset") {
		offset, err = strconv.Atoi(query.Value("offset"))
		if err != nil {
			cx.RespondWithErrorMessage(err.Error(), http.StatusBadRequest)
			return
		}
	}
	if query.Has("order") {
		order = query.Value("order")
	}
	if query.Has("direction") {
		direction = query.Value("direction")
	}

	// Gather params to make db query. Do not include the following list.
	skip := map[string]int{
		"limit":     1,
		"offset":    1,
		"order":     1,
		"direction": 1,
	}

	for key, val := range query.All() {
		_, s := skip[key]
		if !s {
			queryvalues := strings.Split(val[0], ",")
			q[key] = bson.M{"$in": queryvalues}
		}
	}

	total, err := cgs.GetPaginated(q, limit, offset, order, direction)
	if err != nil {
		cx.RespondWithError(http.StatusBadRequest)
		return
	}

	cx.RespondWithPaginatedData(cgs, limit, offset, total)
	return
}

//.........這裏部分代碼省略.........
	}

	//getting real active (in-progress) job (some jobs are in "submitted" states but not in the queue,
	//because they may have failed and not recovered from the mongodb).
	if query.Has("active") {
		err := jobs.GetAll(q, order, direction)
		if err != nil {
			logger.Error("err " + err.Error())
			cx.RespondWithErrorMessage(err.Error(), http.StatusBadRequest)
			return
		}

		filtered_jobs := []core.Job{}
		act_jobs := core.QMgr.GetActiveJobs()
		length := jobs.Length()

		skip := 0
		count := 0
		for i := 0; i < length; i++ {
			job := jobs.GetJobAt(i)
			if _, ok := act_jobs[job.Id]; ok {
				if skip < offset {
					skip += 1
					continue
				}
				job.Registered = true
				filtered_jobs = append(filtered_jobs, job)
				count += 1
				if count == limit {
					break
				}
			}
		}
		cx.RespondWithPaginatedData(filtered_jobs, limit, offset, len(act_jobs))
		return
	}

	//geting suspended job in the current queue (excluding jobs in db but not in qmgr)
	if query.Has("suspend") {
		err := jobs.GetAll(q, order, direction)
		if err != nil {
			logger.Error("err " + err.Error())
			cx.RespondWithError(http.StatusBadRequest)
			return
		}

		filtered_jobs := []core.Job{}
		suspend_jobs := core.QMgr.GetSuspendJobs()
		length := jobs.Length()

		skip := 0
		count := 0
		for i := 0; i < length; i++ {
			job := jobs.GetJobAt(i)
			if _, ok := suspend_jobs[job.Id]; ok {
				if skip < offset {
					skip += 1
					continue
				}
				job.Registered = true
				filtered_jobs = append(filtered_jobs, job)
				count += 1
				if count == limit {
					break
				}
			}