Exemple #1
0
func apiMigrateStatus() (int, string) {
	migrateSlots, err := models.GetMigratingSlots(safeZkConn, globalEnv.ProductName())
	if err != nil && !zkhelper.ZkErrorEqual(err, zk.ErrNoNode) {
		return 500, err.Error()
	}

	b, err := json.MarshalIndent(map[string]interface{}{
		"migrate_slots": migrateSlots,
		"migrate_task":  globalMigrateManager.runningTask,
	}, " ", "  ")
	return 200, string(b)
}
Exemple #2
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func apiSetProxyStatus(proxy models.ProxyInfo, param martini.Params) (int, string) {
	err := models.SetProxyStatus(safeZkConn, globalEnv.ProductName(), proxy.Id, proxy.State)
	if err != nil {
		// if this proxy is not online, just return success
		if proxy.State == models.PROXY_STATE_MARK_OFFLINE && zkhelper.ZkErrorEqual(err, zk.ErrNoNode) {
			return jsonRetSucc()
		}
		log.Warning(errors.ErrorStack(err))
		return 500, err.Error()
	}
	return jsonRetSucc()
}
Exemple #3
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func CreateOrUpdate(zconn zkhelper.Conn, zkPath, value string, flags int, aclv []topo.ACL, recursive bool) (pathCreated string, err error) {
	if recursive {
		pathCreated, err = CreateRecursive(zconn, zkPath, value, flags, aclv)
	} else {
		pathCreated, err = zconn.Create(zkPath, []byte(value), int32(flags), aclv)
	}
	if err != nil && zkhelper.ZkErrorEqual(err, topo.ErrNodeExists) {
		pathCreated = ""
		_, err = zconn.Set(zkPath, []byte(value), -1)
	}
	return
}
Exemple #4
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// Create a path and any pieces required, think mkdir -p.
// Intermediate znodes are always created empty.
func CreateRecursive(zconn zkhelper.Conn, zkPath, value string, flags int, aclv []topo.ACL) (pathCreated string, err error) {
	parts := strings.Split(zkPath, "/")
	if parts[1] != zkhelper.MagicPrefix {
		return "", fmt.Errorf("zkutil: non /%v path: %v", zkhelper.MagicPrefix, zkPath)
	}

	pathCreated, err = zconn.Create(zkPath, []byte(value), int32(flags), aclv)

	if zkhelper.ZkErrorEqual(err, topo.ErrNoNode) {
		// Make sure that nodes are either "file" or "directory" to mirror file system
		// semantics.
		dirAclv := make([]topo.ACL, len(aclv))
		for i, acl := range aclv {
			dirAclv[i] = acl
			dirAclv[i].Perms = zkhelper.PERM_DIRECTORY
		}
		_, err = CreateRecursive(zconn, os_path.Dir(zkPath), "", 0, dirAclv)
		if err != nil && !zkhelper.ZkErrorEqual(err, topo.ErrNodeExists) {
			return "", err
		}
		pathCreated, err = zconn.Create(zkPath, []byte(value), int32(flags), aclv)
	}
	return
}
Exemple #5
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func ForceRemoveLock(zkConn zkhelper.Conn, productName string) error {
	lockPath := fmt.Sprintf("/zk/codis/db_%s/LOCK", productName)
	children, _, err := zkConn.Children(lockPath)
	if err != nil && !zkhelper.ZkErrorEqual(err, zk.ErrNoNode) {
		return errors.Trace(err)
	}

	for _, c := range children {
		fullPath := path.Join(lockPath, c)
		log.Info("deleting..", fullPath)
		err := zkConn.Delete(fullPath, 0)
		if err != nil {
			return errors.Trace(err)
		}
	}

	return nil
}
Exemple #6
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func ProxyList(zkConn zkhelper.Conn, productName string, filter func(*ProxyInfo) bool) ([]ProxyInfo, error) {
	ret := make([]ProxyInfo, 0)
	root := GetProxyPath(productName)
	proxies, _, err := zkConn.Children(root)
	if err != nil && !zkhelper.ZkErrorEqual(err, zk.ErrNoNode) {
		return nil, errors.Trace(err)
	}

	for _, proxyName := range proxies {
		pi, err := GetProxyInfo(zkConn, productName, proxyName)
		if err != nil {
			return nil, errors.Trace(err)
		}
		if filter == nil || filter(pi) == true {
			ret = append(ret, *pi)
		}
	}

	return ret, nil
}
Exemple #7
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func apiOverview() (int, string) {
	// get all server groups
	groups, err := models.ServerGroups(unsafeZkConn, globalEnv.ProductName())
	if err != nil && !zkhelper.ZkErrorEqual(err, zk.ErrNoNode) {
		return 500, err.Error()
	}

	var instances []string

	for _, group := range groups {
		for _, srv := range group.Servers {
			if srv.Type == "master" {
				instances = append(instances, srv.Addr)
			}
		}
	}

	info := make(map[string]interface{})
	info["product"] = globalEnv.ProductName()
	info["ops"] = proxiesSpeed

	redisInfos := make([]map[string]string, 0)

	if len(instances) > 0 {
		for _, instance := range instances {
			info, err := utils.GetRedisStat(instance)
			if err != nil {
				log.Error(err)
			}
			redisInfos = append(redisInfos, info)
		}
	}
	info["redis_infos"] = redisInfos

	b, err := json.MarshalIndent(info, " ", "  ")
	return 200, string(b)
}
Exemple #8
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func SetProxyStatus(zkConn zkhelper.Conn, productName string, proxyName string, status string) error {
	p, err := GetProxyInfo(zkConn, productName, proxyName)
	if err != nil {
		return errors.Trace(err)
	}

	if status != PROXY_STATE_ONLINE && status != PROXY_STATE_MARK_OFFLINE && status != PROXY_STATE_OFFLINE {
		return errors.Errorf("%v, %s", ErrUnknownProxyStatus, status)
	}

	// check slot status before setting proxy online
	if status == PROXY_STATE_ONLINE {
		slots, err := Slots(zkConn, productName)
		if err != nil {
			return errors.Trace(err)
		}
		for _, slot := range slots {
			if slot.State.Status != SLOT_STATUS_ONLINE && slot.State.Status != SLOT_STATUS_MIGRATE {
				return errors.Errorf("slot %v is not online or migrate", slot)
			}
			if slot.GroupId == INVALID_ID {
				return errors.Errorf("slot %v has invalid group id", slot)
			}
		}
	}

	p.State = status
	b, _ := json.Marshal(p)

	_, err = zkConn.Set(path.Join(GetProxyPath(productName), proxyName), b, -1)
	if err != nil {
		return errors.Trace(err)
	}

	if status == PROXY_STATE_MARK_OFFLINE {
		// wait for the proxy down
		for {
			_, _, c, err := zkConn.GetW(path.Join(GetProxyPath(productName), proxyName))
			if zkhelper.ZkErrorEqual(err, zk.ErrNoNode) {
				return nil
			} else if err != nil {
				return errors.Trace(err)
			}
			<-c
			info, err := GetProxyInfo(zkConn, productName, proxyName)
			log.Info("mark_offline, check proxy status:", proxyName, info, err)
			if zkhelper.ZkErrorEqual(err, zk.ErrNoNode) {
				log.Info("shutdown proxy successful")
				return nil
			} else if err != nil {
				return errors.Trace(err)
			}
			if info.State == PROXY_STATE_OFFLINE {
				log.Infof("proxy: %s offline success!", proxyName)
				return nil
			}
		}
	}

	return nil
}
Exemple #9
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func isConnectionError(e error) bool {
	return !zkhelper.ZkErrorEqual(zk.ErrNoNode, e) && !zkhelper.ZkErrorEqual(zk.ErrNodeExists, e) &&
		!zkhelper.ZkErrorEqual(zk.ErrNodeExists, e) && !zkhelper.ZkErrorEqual(zk.ErrNotEmpty, e)
}
Exemple #10
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func ActionGC(zkConn zkhelper.Conn, productName string, gcType int, keep int) error {
	prefix := GetWatchActionPath(productName)
	respPrefix := GetActionResponsePath(productName)

	exists, err := zkhelper.NodeExists(zkConn, prefix)
	if err != nil {
		return errors.Trace(err)
	}
	if !exists {
		// if action path not exists just return nil
		return nil
	}

	actions, _, err := zkConn.Children(prefix)
	if err != nil {
		return errors.Trace(err)
	}

	var act Action
	currentTs := time.Now().Unix()

	if gcType == GC_TYPE_N {
		sort.Strings(actions)
		// keep last 500 actions
		if len(actions)-500 <= keep {
			return nil
		}
		for _, action := range actions[:len(actions)-keep-500] {
			if err := zkhelper.DeleteRecursive(zkConn, path.Join(prefix, action), -1); err != nil {
				return errors.Trace(err)
			}
			err := zkhelper.DeleteRecursive(zkConn, path.Join(respPrefix, action), -1)
			if err != nil && !zkhelper.ZkErrorEqual(err, zk.ErrNoNode) {
				return errors.Trace(err)
			}
		}
	} else if gcType == GC_TYPE_SEC {
		secs := keep
		for _, action := range actions {
			b, _, err := zkConn.Get(path.Join(prefix, action))
			if err != nil {
				return errors.Trace(err)
			}
			if err := json.Unmarshal(b, &act); err != nil {
				return errors.Trace(err)
			}
			log.Infof("action = %s, timestamp = %s", action, act.Ts)
			ts, _ := strconv.ParseInt(act.Ts, 10, 64)

			if currentTs-ts > int64(secs) {
				if err := zkhelper.DeleteRecursive(zkConn, path.Join(prefix, action), -1); err != nil {
					return errors.Trace(err)
				}
				err := zkhelper.DeleteRecursive(zkConn, path.Join(respPrefix, action), -1)
				if err != nil && !zkhelper.ZkErrorEqual(err, zk.ErrNoNode) {
					return errors.Trace(err)
				}
			}
		}

		actionResps, _, err := zkConn.Children(respPrefix)
		if err != nil {
			return errors.Trace(err)
		}

		for _, action := range actionResps {
			b, _, err := zkConn.Get(path.Join(respPrefix, action))
			if err != nil {
				return errors.Trace(err)
			}
			if err := json.Unmarshal(b, &act); err != nil {
				return errors.Trace(err)
			}
			log.Infof("action = %s, timestamp = %s", action, act.Ts)
			ts, _ := strconv.ParseInt(act.Ts, 10, 64)

			if currentTs-ts > int64(secs) {
				if err := zkhelper.DeleteRecursive(zkConn, path.Join(respPrefix, action), -1); err != nil {
					return errors.Trace(err)
				}
			}
		}
	}
	return nil
}
Exemple #11
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func (top *Topology) IsErrNodeExist(err error) bool {
	return zkhelper.ZkErrorEqual(err, topo.ErrNodeExists)
}
Exemple #12
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func (top *Topology) IsErrClosing(err error) bool {
	return zkhelper.ZkErrorEqual(err, topo.ErrClosing)
}
Exemple #13
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func (top *Topology) IsErrClose(err error) bool {
	return zkhelper.ZkErrorEqual(err, topo.ErrClosing) || zkhelper.ZkErrorEqual(err, topo.ErrConnectionClosed) || zkhelper.ZkErrorEqual(err, topo.ErrNoServer)
}
Exemple #14
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func (top *Topology) IsErrSessionExpired(err error) bool {
	return zkhelper.ZkErrorEqual(err, topo.ErrSessionExpired)
}
Exemple #15
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func (top *Topology) IsFatalErr(err error) bool {
	return zkhelper.ZkErrorEqual(err, topo.ErrSessionExpired) || zkhelper.ZkErrorEqual(err, topo.ErrNoNode) || top.IsErrClosing(err)
}