Esempio n. 1
0
func (ts *Tribserver) GetTribbles(args *tribproto.GetTribblesArgs, reply *tribproto.GetTribblesReply) error {

	//check errors for any calls to libstore

	//check if user exists
	_, userErr := ts.lstore.Get(args.Userid)

	if userErr != nil {
		reply.Status = tribproto.ENOSUCHUSER
		reply.Tribbles = nil
		return nil
	}

	//else
	//getList(user:timestamps) =>
	timestamps, listErr := ts.lstore.GetList(args.Userid + ":timestamps")

	//if there's an error in retrieving a list, it means there are no tribbles
	if listErr != nil {
		reply.Status = tribproto.OK
		reply.Tribbles = []tribproto.Tribble{}
		return nil
	}
	//for 100 tribbles (or up to 100 tribbles) at end of array (newest pushed to end)
	numTribs := int(math.Min(100, float64(len(timestamps))))
	// get(tribble ID) and push onto tribbles array
	var tribbles []tribproto.Tribble

	var i int
	count := numTribs
	for i = len(timestamps) - 1; count > 0; i-- {
		jtrib, err2 := ts.lstore.Get(args.Userid + ":" + timestamps[i])
		if err2 != nil {
			return err2
		}

		var trib tribproto.Tribble
		jtribBytes := []byte(jtrib)
		jerr := json.Unmarshal(jtribBytes, &trib)

		if jerr != nil {
			return jerr
		}

		tribbles = append(tribbles, trib)
		count--
	}

	//reply = OK, tribbles array
	reply.Status = tribproto.OK
	reply.Tribbles = tribbles
	//return nil
	return nil
}
Esempio n. 2
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func (ts *Tribserver) GetTribblesBySubscription(args *tribproto.GetTribblesArgs, reply *tribproto.GetTribblesReply) error {
	// check that user exists
	_, err := ts.ls.Get(args.Userid)
	if err != nil {
		reply.Status = tribproto.ENOSUCHUSER
		reply.Tribbles = nil
		return nil
	}
	// get the list of subscriptions
	subsid := fmt.Sprintf("%s:subs", args.Userid)
	var sublist []string
	sublist, err = ts.ls.GetList(subsid)
	if err != nil {
		return err
	}
	// for each target user, get his last 100 tribbles and append them to each other
	allTribbles := make([]string, 0, 100*len(sublist))
	for i := range sublist {
		id := fmt.Sprintf("%s:posts", sublist[i])
		tribids, _ := ts.ls.GetList(id)
		if reply.Status == tribproto.OK {
			for i := range tribids {
				allTribbles = append(allTribbles, tribids[i])
			}
		}
	}
	// sort the list of all posts
	sort.Sort(TribbleList(allTribbles))
	// take the 100 most recent posts
	var triblist []string
	length := len(allTribbles)
	if length <= 100 {
		reply.Tribbles = make([]tribproto.Tribble, length)
		triblist = allTribbles
	} else {
		reply.Tribbles = make([]tribproto.Tribble, 100)
		triblist = allTribbles[0:100]
	}

	// get the tribbles contents
	for i := range triblist {
		mval, e := ts.ls.Get(triblist[i])
		if e != nil {
			return e
		}
		e = json.Unmarshal([]byte(mval), &reply.Tribbles[i])
		if e != nil {
			return e
		}
	}
	reply.Status = tribproto.OK
	return nil
}
Esempio n. 3
0
/**@brief collect all tribbles from all users followed
 * @param CreateUserArgs
 * @param CreateUserReply
 * @return error
 */
func (ts *Tribserver) GetTribblesBySubscription(
	args *tribproto.GetTribblesArgs, reply *tribproto.GetTribblesReply) error {
	var fllw_key string
	var fllw_ids []string
	var err error
	var getArgs tribproto.GetTribblesArgs
	var getReply tribproto.GetTribblesReply
	var tribs Tribs

	fllw_key = fmt.Sprintf("%s:F", args.Userid)
	fllw_ids, err = ts.Store.GetList(fllw_key)
	if lsplog.CheckReport(1, err) {
		reply.Status = tribproto.ENOSUCHUSER
		reply.Tribbles = nil
		return nil
	}

	fmt.Printf("complete geting list %d\n", len(fllw_ids))

	reply.Status = tribproto.OK

	for i := 0; i < len(fllw_ids); i++ {
		getArgs.Userid = fllw_ids[i]
		err = ts.GetTribbles(&getArgs, &getReply)

		fmt.Printf("try geting subscription user %d\n", i+1)

		if lsplog.CheckReport(1, err) {
			reply.Status = tribproto.ENOSUCHTARGETUSER
			reply.Tribbles = nil
			return nil
		}

		reply.Tribbles = append(reply.Tribbles, getReply.Tribbles...)
	}

	fmt.Printf("complete getting all subscribed tribs\n")

	//to satisfy go compiler type check
	tribs = reply.Tribbles
	//sort in time order
	sort.Sort(tribs)

	if len(reply.Tribbles) > 100 {
		reply.Tribbles = reply.Tribbles[:100]
	}
	return nil
}
Esempio n. 4
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func (ts *Tribserver) GetTribbles(args *tribproto.GetTribblesArgs, reply *tribproto.GetTribblesReply) error {
	// check that user exists
	_, err := ts.ls.Get(args.Userid)
	if err != nil {
		reply.Status = tribproto.ENOSUCHUSER
		reply.Tribbles = nil
		return nil
	}
	// get the list of tribbles
	postsid := fmt.Sprintf("%s:posts", args.Userid)
	var postlist []string
	postlist, err = ts.ls.GetList(postsid)
	if err != nil {
		return err
	}
	// get the last 100 tribbles ids
	var triblist []string
	max := len(postlist)
	if max <= 100 {
		triblist = make([]string, max)
		for i := range postlist {
			triblist[max-i-1] = postlist[i]
		}
		reply.Tribbles = make([]tribproto.Tribble, max)
	} else {
		triblist = make([]string, 100)
		cutlist := postlist[max-100 : max]
		for i := range cutlist {
			triblist[99-i] = cutlist[i]
		}
		reply.Tribbles = make([]tribproto.Tribble, 100)
	}
	// get the tribbles contents
	for i := range triblist {
		mval, e := ts.ls.Get(triblist[i])
		if e != nil {
			return e
		}
		e = json.Unmarshal([]byte(mval), &reply.Tribbles[i])
		if e != nil {
			return e
		}
	}
	reply.Status = tribproto.OK
	return nil
}
Esempio n. 5
0
/**@brief get posted tribbles
 * @param GetTribblesArgs
 * @param GetTribblesReply
 * @return error
 */
func (ts *Tribserver) GetTribbles(
	args *tribproto.GetTribblesArgs, reply *tribproto.GetTribblesReply) error {
	var trib_key string
	var trib_ids []string
	var trib_enc string
	var err error
	var length int

	trib_key = fmt.Sprintf("%s:T", args.Userid)

	trib_ids, err = ts.Store.GetList(trib_key)
	if lsplog.CheckReport(1, err) {
		reply.Status = tribproto.ENOSUCHUSER
		reply.Tribbles = nil
		return nil
	}

	reply.Status = tribproto.OK
	if len(trib_ids) > 100 {
		length = 100
	} else {
		length = len(trib_ids)
	}

	reply.Tribbles = make([]tribproto.Tribble, length)

	for i := 0; i < length; i++ {
		trib_enc, err = ts.Store.Get(trib_ids[len(trib_ids)-1-i])
		if lsplog.CheckReport(1, err) {
			return lsplog.MakeErr("Get Tribbles Message Error")
		}
		//fmt.Printf("unmarshal string %s\n", trib_enc)
		_ = json.Unmarshal([]byte(trib_enc), &(reply.Tribbles[i]))
	}

	return nil
}
Esempio n. 6
0
func (ts *Tribserver) GetTribblesBySubscription(args *tribproto.GetTribblesArgs, reply *tribproto.GetTribblesReply) error {

	//check errors for any calls to libstore

	//check if user exists
	_, userErr := ts.lstore.Get(args.Userid)

	if userErr != nil {
		reply.Status = tribproto.ENOSUCHUSER
		return nil
	}

	//Get subscriptions
	subs, suberr := ts.lstore.GetList(args.Userid + ":subscriptions")

	//err indicates there are no subscriptions
	if suberr != nil {
		reply.Status = tribproto.OK
		reply.Tribbles = []tribproto.Tribble{}
		return nil
	}

	//for all users
	usrTimestamps := make(map[string]([]string))
	totalTribs := 0
	for i := 0; i < len(subs); i++ {
		//getTribbles for each user
		timestamps, listErr := ts.lstore.GetList(subs[i] + ":timestamps")

		//if not empty
		if listErr == nil && len(timestamps) > 0 {
			usrTimestamps[subs[i]] = timestamps
			totalTribs += len(timestamps)
		}

	}
	//Go through all tribble lists, and create new list of most recent 100 tribbles
	numTribs := int(math.Min(100, float64(totalTribs)))
	replyTribs := []tribproto.Tribble{}
	for j := 0; j < numTribs; j++ {
		var id string
		latest := ""

		for userId, timestamps := range usrTimestamps {
			if len(timestamps) > 0 {
				curr := timestamps[len(timestamps)-1]
				nanoCurr, _ := strconv.ParseInt(curr, 16, 64)
				nanoLatest, _ := strconv.ParseInt(latest, 16, 64)
				if nanoCurr > nanoLatest {
					latest = curr
					id = userId
				}
			}

		}

		//error makes no sense because we have these timestamps from a previous get
		jtrib, ohgawderr := ts.lstore.Get(id + ":" + latest)
		if ohgawderr != nil {
			return ohgawderr
		}

		var trib tribproto.Tribble
		jtribBytes := []byte(jtrib)
		jerr := json.Unmarshal(jtribBytes, &trib)

		if jerr != nil {
			return jerr
		}

		replyTribs = append(replyTribs, trib)

		//new list without latest Trib
		timestamps := usrTimestamps[id]
		newArray := []string{}
		for k := 0; k < len(timestamps)-1; k++ {
			newArray = append(newArray, timestamps[k])
		}

		usrTimestamps[id] = newArray

	}

	reply.Status = tribproto.OK
	reply.Tribbles = replyTribs

	return nil
}