WO2010081401A1 - 一种视频服务系统 - Google Patents

一种视频服务系统 Download PDF

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Publication number
WO2010081401A1
WO2010081401A1 PCT/CN2010/070067 CN2010070067W WO2010081401A1 WO 2010081401 A1 WO2010081401 A1 WO 2010081401A1 CN 2010070067 W CN2010070067 W CN 2010070067W WO 2010081401 A1 WO2010081401 A1 WO 2010081401A1
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Prior art keywords
node
slaver
nodes
master
master node
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PCT/CN2010/070067
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English (en)
French (fr)
Inventor
张季姝
徐志浩
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深圳市同洲电子股份有限公司
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Publication of WO2010081401A1 publication Critical patent/WO2010081401A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/5003—Managing SLA; Interaction between SLA and QoS
    • H04L41/5019—Ensuring fulfilment of SLA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/508—Network service management, e.g. ensuring proper service fulfilment according to agreements based on type of value added network service under agreement
    • H04L41/509—Network service management, e.g. ensuring proper service fulfilment according to agreements based on type of value added network service under agreement wherein the managed service relates to media content delivery, e.g. audio, video or TV
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/40—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/612—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast

Definitions

  • the present invention belongs to the field of video technologies, and in particular, to a video service system. Background technique
  • a cluster is a group of independent computers connected by a high-speed network. They form a group and are managed in a single system mode. When a customer interacts with a cluster, the cluster acts like a stand-alone server. Most of the existing clustering technologies use the equalization strategy to provide network services. The main cluster is maintained in the star network through heartbeat packets and control packets. The system lacks reliability and stability:
  • the prior art cannot communicate with other nodes after completing the task assigned to the node, and cannot notify other nodes to synchronize the current remaining resource state and the existing session state after the allocation;
  • the prior art can only deal with the new task assignment that is sent immediately, and the unfinished tasks after the node is dropped cannot be automatically re-divided. Summary of the invention
  • An object of the embodiments of the present invention is to provide a video service system, which aims to solve the problem of lack of stability and reliability of the existing video service system.
  • a video service system includes a master node, at least one slaver node, and at least one Member node.
  • the node forms a one-way closed loop by using a login sequence, and each node stores The IP address of the node other than the node and the PORT data, the nodes communicate with each other through a UDP connection, and the adjacent nodes of the login sequence transmit a heartbeat packet through UDP; the slaver node backs up the real-time data in the master node.
  • the Slaver node works instead of the Master node.
  • the video service system includes a master node, at least one slaver node, and at least one Member node.
  • the nodes form a one-way closed loop through the login order, and each node stores an IP address of a node other than the node.
  • PORT data the nodes are connected through UDP
  • the letter the node adjacent to the serial number, transmits the heartbeat packet through UDP, which improves the stability and reliability of the video service system.
  • FIG. 1 is a structural block diagram of a video service system according to an embodiment of the present invention.
  • FIG. 2( a ) is a schematic diagram of a pre-master node transformation according to an embodiment of the present invention
  • FIG. 2(b) is a schematic diagram of a Master node transformation according to an embodiment of the present invention. detailed description
  • the video service system includes a master node, at least one slaver node, and at least one member node.
  • the nodes form a one-way closed loop through the login order, and each node stores a node other than the node.
  • the IP address and the PORT data are communicated by the UDP connection between the nodes.
  • the nodes adjacent to the registration sequence number transmit the heartbeat packets through the UDP.
  • the Slaver node backs up the real-time data in the master node. When the master node is offline, the Slaver node is replaced.
  • the Master node works.
  • FIG. 1 is a structural block diagram of a video service system according to an embodiment of the present invention. For convenience of description, only parts related to the embodiment of the present invention are shown in the figure.
  • the system includes a Master node, at least one Slaver node (n), and a Member node (m).
  • the Master node, the Slaver node, and the Member node form a one-way closed loop through the order of login, and each node stores the node outside the node.
  • the IP address of the node and the PORT data wherein the node sends data through the PORT according to the IP address of the target node, the data includes a heartbeat packet, a work packet, a synchronization data, and a sequence list, and data interaction between the following nodes is adopted.
  • the description of the embodiment is not intended to limit the invention.
  • the Slaver node backs up the real-time data in the master node.
  • the slave node replaces the master node.
  • the member node evolves into a slaver node instead of the slave.
  • the node works. As shown in Figure 1, node 1 is the master node, node 2 to node n+1 (n is a positive integer greater than 1) is a slaver node, and node n+2 to node n+l+m (m is a positive greater than 2)
  • the integer is the Member node, where each online node in the system communicates through a UDP connection.
  • the activated node when a node of a system is started, the activated node sends a login message to other nodes in the system through UDP, and if the login message is sent for a preset number of times (such as three times), no other content is received.
  • the node responds, it determines that the started node is the first node to log in to the system, and the node becomes the master node of the system.
  • the node becomes the master node of the system, it is necessary to check the database and the permanently stored data, and complete necessary data updates, such as updating the online node list, establishing a database connection, and importing resource information from the database into the memory. Wait.
  • the master node When the master node is online, when the system has a node login, the master node sends a message to the entire online node that the node logs in.
  • the master node needs to assign a role (Slaver node or Member node) to the node according to the number of online nodes recorded by itself.
  • a message sending sequence number (login number), which is specifically implemented as follows: If the number of slaver nodes is less than the number of pre-configured slave nodes, the identity assigned to the node is a slaver node, otherwise it is a Member node; when the master node determines that there is a node When the slaver node is added, the synchronous data needs to be sent to the slaver node.
  • the master node needs to send a sequence list of the online nodes maintained by the master node to all the online nodes in the system, so that each online node in the system stores the whole of the current online node. situation.
  • the content of the synchronization data includes a resource usage situation, current session information, and the like.
  • various forms of sending synchronization data are the same, and the specific process is: first sending a synchronization request to the receiving node. After receiving the request message, the receiving node sends the sequence number of the temporary data existing by the own node to the sending node, and the sending node determines, according to the serial number, whether it needs to send the synchronous data and which synchronous data is sent, so as to reduce the repeated sending of the synchronous data. There is no need to limit the invention herein.
  • the role and message sequence number are assigned according to the pre-configured default sequence number.
  • the nodes adjacent to the registration sequence number transmit the heartbeat packet through the UDP, and when the heartbeat packet sending node continuously sends the heartbeat packet to the node adjacent to the serial number, the response packet of the neighboring node is not received.
  • the heartbeat packet sending node to the master node or the first online slaver node Sending node drop information, the master node or the first online slaver node confirms the node drop status, and sends an ordered list of online nodes to each online node in the system.
  • the heartbeat packet sending node continuously sends the node drop information to the master node of the system, and does not receive the latest online node sequence list, it determines that the master node is dropped, and the heartbeat packet sending node turns.
  • the first Slaver node in the system sends the node drop information, and so on, until the first Slaver node on the line is found.
  • the first online Slaver node sends an ordered list of online nodes to the online nodes in the system.
  • the master node when the logged-in node is assigned as a Slaver node, a Slaver node is dropped, or a node is to be a master node, the master node sends synchronization data to each online node in the system, where:
  • node 1 is the master node
  • node 2 3 is the slaver node
  • node 4 is the member node
  • node 3 is the slaver node.
  • the original Master node 1 sends synchronization data to Node 3
  • the original Master node 1 becomes a Slaver node
  • Node 3 becomes a new Master node
  • the serial numbers of other nodes in the system are sequentially changed.
  • the system diagram is changed to FIG. 2(b).
  • the new master node sends a sequence list of the online nodes to each of the online nodes in the system, which is merely a specific embodiment of the present invention and is not intended to limit the present invention.
  • the video service system provided by the embodiment of the present invention includes two working modes, a short working mode and a long working mode, wherein the short working mode is an ordinary working mode, and the long working mode is a recording task working mode.
  • the slaver node or the Member node which is the workbench submitting node, transmits the received work package to the master node, and the master node processes the work package, and sequentially transmits the work packet completion message through each slaver node. Submit the node to the work package.
  • the master node when receiving the recording task, allocates the recording task to each node equally according to the number of online nodes in the system.
  • the master node or the first online Slaver node sends a message indicating that the task has changed to the online node of the system, and reassigns the recording task.
  • the video service system includes a master node, at least one slaver node, and at least one member node, and the nodes form a one-way closed loop through the login order, and each The node stores the IP address and PORT data of the node other than the node, and the nodes communicate with each other through the UDP connection.
  • the neighbors of the login serial number transmit the heartbeat packet through UDP, which improves the stability and reliability of the video service system and ensures Recording tasks in the video service system are not lost, and the workload of the nodes is controlled according to the performance of each service node, and automatic backup of various video services is realized at the same time.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Small-Scale Networks (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Description

一种视频服务系统
本申请要求于 2009 年 1 月 14 日提交中国专利局、 申请号为 200910105044.X, 发明名称为"一种视频服务系统"的中国专利申请的优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明属于视频技术领域， 尤其涉及一种视频服务系统。 背景技术
集群是一组相互独立的、通过高速网络互联的计算机，它们构成了一个组， 并以单一系统的模式加以管理，一个客户与集群相互作用时， 集群像是一个独 立的服务器。现有的集群技术大多使用均衡策略提供网络服务， 主要在星形网 络中通过心跳包和控制包来维护整个集群， 系统缺乏可靠性和稳定性：
在分配资源方面，现有技术不能在完成分到本节点的任务后和其他节点通 信， 也就不能在分配后通知其他节点同步目前剩余资源状态和现有会话状态； 在录制任务下发方面，现有技术只能处理即时发来的新任务分配， 节点掉 线后未完成的任务不能自动重分。 发明内容
本发明实施例的目的在于提供一种视频服务系统，旨在解决现有的视频服 务系统缺乏稳定性和可靠性的问题。
本发明实施例是这样实现的， 一种视频服务系统， 所述系统包括一个 Master节点、 至少一个 Slaver节点和至少一个 Member节点， 所述节点通过登 录次序形成单向的闭环，每个节点存储有本节点之外的节点的 IP地址和 PORT 数据， 所述节点之间通过 UDP连接通信， 所述登录序号相邻的节点之间通过 UDP传输心跳包； 所述 Slaver节点备份 Master节点中的实时数据， 当 Master 节点掉线时， Slaver节点替代 Master节点工作。
在本发明中， 视频服务系统包括一个 Master节点、 至少一个 Slaver节点 和至少一个 Member节点， 节点之间通过登录次序形成单向的闭环， 每个节点 存储有本节点之外的节点的 IP地址和 PORT数据，节点之间通过 UDP连接通 信， 登录序号相邻的节点之间通过 UDP传输心跳包， 提高了视频服务系统稳 定性和可靠性。 附图说明
图 1是本发明实施例提供的视频服务系统的结构框图；
图 2 ( a )是本发明实施例提供的 Master节点变换前示意图、
图 2 ( b )是本发明实施例提供的 Master节点变换后示意图。 具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白， 以下结合附图及实 施例， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具体实施例仅 仅用以解释本发明， 并不用于限定本发明。
本发明的实施例提供的视频服务系统， 包括一个 Master节点、 至少一个 Slaver节点和至少一个 Member节点，节点之间通过登录次序形成单向的闭环， 每个节点存储有本节点之外的节点的 IP地址和 PORT数据，节点之间通过 UDP 连接通信， 登录序号相邻的节点之间通过 UDP传输心跳包； 所述 Slaver节点 备份 Master节点中的实时数据，当 Master节点掉线时， Slaver节点替代 Master 节点工作。
图 1 示出了本发明实施例提供的视频服务系统的结构框图， 为了便于说 明， 图中仅给出了与本发明实施例相关的部分。
系统包括一个 Master节点、 至少一个 Slaver节点（ n个）和 Member节点 ( m个） ， Master节点、 Slaver节点和 Member节点通过登录的先后次序形成 单向的闭环， 每个节点存储有本节点之外的节点的 IP地址和 PORT数据， 其 中， 该节点根据目标节点的 IP地址， 通过 PORT发送数据， 该数据包括心跳 包、 工作包、 同步数据和顺序列表， 下述节点之间的数据交互均采用该实施例 的描述， 但不用以限制本发明。
在本发明实施例中， Slaver节点备份 Master节点中的实时数据， 当 Master 节点掉线时， Slaver节点替代 Master节点工作； 当系统内的 Slaver节点数量 减少时， Member节点演变成为 Slaver节点， 替代 Slaver节点工作。 如图 1所示， 节点 1为 Master节点， 节点 2至节点 n+1 ( n为大于 1的正 整数）为 Slaver节点，节点 n+2至节点 n+l+m( m为大于 2的正整数）为 Member 节点， 其中， 系统内各在线节点之间通过 UDP连接通信。
在本发明实施例中， 当一个系统有节点启动时， 启动的节点通过 UDP方 式向系统内其他节点发送登陆消息， 若连续发送预设次数（如三次）登录消息 以后，还是收不到任何其他节点的回应时， 则判定启动的节点是该系统第一个 登陆的节点， 则该节点变成系统的 Master节点。
在本发明实施例中， 当节点变成系统的 Master节点后， 需要检查数据库 和永久化存储的数据， 完成必要的数据更新， 例如更新在线节点列表、 建立数 据库连接以及把资源信息从数据库导入内存等。
Master节点在线时， 当系统有节点登录时， Master节点向全体在线节点发 送有节点登陆的消息， Master节点需要根据自身记录的在线节点的个数来给该 节点分配角色（ Slaver节点或 Member节点）和一个消息发送序号（登录序号）， 其具体实现为： 若 Slaver节点的数目小于预先配置的 Slaver节点数量，则分配 给该节点的身份是 Slaver节点， 否则是 Member节点； 当 Master节点判断有 节点成为 Slaver节点时， 需要向 Slaver节点发送同步数据， Master节点需要 向系统内全部在线节点发送一份 Master节点自身维护的在线节点的顺序列表， 以便系统内每个在线节点存储有当前在线节点的整体状况。
在本发明实施例中，同步数据的内容包括资源使用情况、当前会话信息等， 其中， 在该实施例中， 各种发送同步数据的形式相同， 其具体过程是： 首先向 接收节点发送同步请求，接收节点接收到请求消息后把自身节点已有的临时数 据的序列号发给发送节点，发送节点根据这个序列号判断是否需要发送同步数 据以及发送哪些同步数据， 以减少同步数据的重复发送， 在此不用以限制本发 明。
若两个或多个节点同时登陆，则根据预先配置的默认序号为其分配角色和 消息发送序号。
在本发明实施例中， 登录序号相邻的节点之间通过 UDP传输心跳包， 当 心跳包发送节点向序号相邻的节点连续发送 3次心跳包，都没有接收到该相邻 节点的回应时， 则心跳包发送节点向 Master节点或第一个在线的 Slaver节点 发送节点掉线信息， Master节点或第一个在线的 Slaver节点去确认该节点掉线 状态， 向系统内的各在线节点发送在线节点的顺序列表。 在该实施例中， 当该 心跳包发送节点连续向系统的 Master节点发送节点掉线信息， 都没有接收到 最新的在线节点的顺序列表时， 则判定 Master节点掉线， 该心跳包发送节点 转向系统内第一个 Slaver节点发送该节点掉线信息，依次类推，一直找到在线 的第一个 Slaver节点为止，该第一个在线的 Slaver节点向系统内在线节点发送 在线节点的顺序列表。
在本发明实施例中， 当登录的节点被分配为 Slaver节点、有 Slaver节点掉 线或有节点要成为 Master节点时， Master节点向系统内的各在线节点发送同 步数据， 其中：
如图 2 ( a )所示， 加入当前的视频服务系统有 4个节点， 其中， 节点 1 为 Master节点、 节点 2、 3为 Slaver节点、 节点 4为 Member节点， 当身份为 Slaver节点的节点 3要成为系统内的新的 Master节点时，原先的 Master节点 1 向节点 3发送同步数据， 原先的 Master节点 1变为 Slaver节点， 节点 3变为 新的 Master节点，系统内其他节点的序号依次变更，系统示意图变为图 2( b ) , 同时， 新的 Master节点向系统内的各在线节点发送在线节点的顺序列表， 在 此仅仅为本发明的一个具体实施例， 不用以限制本发明。
本发明实施例提供的视频服务系统包括两种工作模式，分别为短工作模式 和长工作模式， 其中短工作模式为普通的工作模式， 而长工作模式为录制任务 工作模式。
在本发明实施例中，作为工作包提交节点的 Slaver节点或 Member节点将 接收到的工作包传送给 Master节点， Master节点处理该工作包， 并把工作包 完成的消息通过每一个 Slaver节点依次传送给工作包提交节点。
在本发明实施例中， 当接收到录制任务时， Master节点根据系统内的在线 节点的个数，将录制任务平均分配给每个节点。当系统内有节点掉线时， Master 节点或第一个在线的 Slaver 节点将录制任务发生变化的消息发送给系统各在 线节点， 并重新分配录制任务。
在本发明实施例中，视频服务系统包括一个 Master节点、至少一个 Slaver 节点和至少一个 Member节点， 节点之间通过登录次序形成单向的闭环， 每个 节点存储有本节点之外的节点的 IP地址和 PORT数据，节点之间通过 UDP连 接通信， 登录序号相邻的节点之间通过 UDP传输心跳包， 提高了视频服务系 统稳定性和可靠性，保证视频服务系统中录制任务不会丟失， 并按照各服务节 点的性能来控制节点的工作量， 同时实现了各种视频服务的自动备份。
以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡在本发 明的精神和原则之内所作的任何修改、等同替换和改进等， 均应包含在本发明 的保护范围之内。

Claims

权 利 要 求
1、 一种视频服务系统， 其特征在于， 所述系统包括一个 Master节点、 至 少一个 Slaver节点和至少一个 Member节点，节点通过登录次序形成单向的闭 环， 每个节点存储有本节点之外的节点的 IP地址和 PORT数据， 节点之间通 过 UDP连接通信， 所述登录序号相邻的节点之间通过 UDP传输心跳包； 所述 Slaver节点备份 Master节点中的实时数据， 当 Master节点掉线时， Slaver节 点替代 Master节点工作。
2、 如权利要求 1所述的系统， 其特征在于， 当系统有节点登录时， 所述 Master节点发送节点登录消息给系统内的所有在线节点，并为所述节点分配相 应的角色。
3、 如权利要求 1所述的系统， 其特征在于， 当心跳包发送节点向序号相 邻的节点连续发送预设次数的心跳包， 都没有接收到所述相邻节点的回应时， 则所述心跳包发送节点向 Master节点或第一个在线的 Slaver节点发送节点掉 线信息， 所述 Master节点或第一个在线的 Slaver节点向系统内的各在线节点 发送在线节点的顺序列表。
4、如权利要求 1所述的系统，其特征在于， 当登录的节点被分配为 Slaver 节点、 有 Slaver节点掉线或有节点要成为 Master节点时， Master节点向系统 内的各在线节点发送同步数据。
5、 如权利要求 4所述的系统， 其特征在于， 当有节点要成为 Master节点 时， 所述原先的 Master节点向要成为 Master节点的节点发送同步数据， 原先 的 Master节点变为 Slaver节点， 所述节点变为 Master节点， 系统内其他节点 的序号依次变更， 同时， 新的 Master节点向系统内的各在线节点发送在线节 点的顺序列表。
6、如权利要求 1所述的系统，其特征在于，作为工作包提交节点的 Slaver 节点或 Member节点将接收到的工作包传送给 Master节点， 所述 Master节点 处理所述工作包，并把所述工作包完成的消息通过系统内的每一个 Slaver节点 依次传送给工作包提交节点。
7、 如权利要求 1所述的系统， 其特征在于， 当接收到录制任务时， 所述 Master节点根据系统内的节点个数， 将所述录制任务平均分配给每个节点。
8、 如权利要求 7所述的系统， 其特征在于， 当有节点掉线时， Master节 点或第一个在线的 Slaver节点将录制任务发生变化的消息发送给系统节点，并 重新分配录制任务。
9、 如权利要求 1所述的系统， 其特征在于， 当系统内的 Slaver节点数量 减少时， 所述 Member节点替代 Slaver节点工作。
PCT/CN2010/070067 2009-01-14 2010-01-08 一种视频服务系统 WO2010081401A1 (zh)

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