CN108600322B - Comprehensive video monitoring cloud service system and method based on railway video technical specification - Google Patents
Comprehensive video monitoring cloud service system and method based on railway video technical specification Download PDFInfo
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1031—Controlling of the operation of servers by a load balancer, e.g. adding or removing servers that serve requests
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/63—Routing a service request depending on the request content or context
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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Abstract
The invention relates to a comprehensive video monitoring cloud service system and a method based on railway video technical specifications, which are characterized in that the cloud system comprises a core layer, a regional layer and an access layer, wherein the core layer comprises core nodes, and the regional layer and the access layer both comprise a plurality of nodes; each node comprises an acquisition terminal, an access server, a distribution server, a storage server and a management server, wherein the management server comprises a main server and a standby server, and the acquisition terminal, the access server, the distribution server and the storage server are deployed in a cluster mode. The invention solves the problem of complicated upgrading and capacity expansion, and because of adopting a dynamic routing mode and a cluster deployment mode, the system does not need to carry out complicated routing configuration work during capacity expansion, capacity expansion can be completed only by adding nodes of access service, distribution service or storage service, and the upgrading and capacity expansion work is greatly simplified.
Description
Technical Field
The invention relates to a comprehensive video monitoring cloud service system and method based on railway video technical specifications, and belongs to the technical field of network communication, distributed systems and video monitoring.
Background
With the acceleration of the urbanization process in China and the vigorous development of the video monitoring industry, the video monitoring has been deeply inserted into the lives of people on roads, railways, airports, schools, hospitals, office buildings and even shadows of video monitoring at any place in the home. In recent years, smart city concepts are proposed and implemented, new requirements are put on a video monitoring system, the monitoring system is bound to face upgrading and capacity expansion, and at present, China starts to upgrade and transform a high-definition camera. At present, cloud computing and cloud storage technologies are emerging, industries begin to introduce the cloud computing and cloud storage technologies into their own systems, and the cloud computing and cloud storage technologies are used to improve the elasticity and robustness of the systems, realize functions of dynamic adjustment of system capacity, redundancy backup and the like, eliminate single-node faults of the systems, reduce the upgrade and maintenance costs of the systems, and reduce the dependence of the systems on high-performance hardware.
In the railway system, the importance of the monitoring and monitoring system is self-evident, the video monitoring and monitoring system of the railway system in China also faces the problems of capacity expansion and upgrading, and the monitoring and monitoring platform in the railway system is more traditional and closed. In order to realize the platformization and unification of the railway comprehensive video monitoring system in China, the railway company customizes the railway standard V1.0 of video technology. The railway comprehensive video monitoring system in the standard consists of video nodes, a video collection point, a video acquisition point, a bearing network and terminal equipment. The video nodes comprise video core nodes, video area nodes, class I video access nodes and class II video access nodes, the terminal equipment comprises a user terminal and a management terminal, and the system structure and the interface are shown in figure 1. The core layer only has one core node, the core node belongs to a plurality of regional nodes, and each regional node can belong to a plurality of access nodes. The core node can request monitoring data and initiate control operation to all subordinate area nodes; the regional node may request monitoring data and initiate control operations from all subordinate line nodes. The upper and lower stages interact signaling and data through the management server and the distribution server (Vss), and the data request flow is shown in fig. 2, where resid is the unique id of the video stream, and sessionId is the session id between the management server and the distribution server (Vss). When the client sends a play request (send resid to request a particular video for a particular channel) to the management server, the management server generates sessionId for this request, and notifies the distribution server (Vss) of the resid and sessionId, requesting it to play the channel stream. If the designated resid is at the lower level, the management server sends the request to the lower management server, and informs the Vss at the current level of the sessionid generated by the lower management server and the ip and port of the distribution server (Vss) returned by the lower management server, so that the management server can obtain the video stream from the lower distribution server, and the request is sent downwards until the video of the designated resid is found. The overall system structure in fig. 1 is divided into three layers, namely a core layer, a regional layer and an access layer, each layer generally includes a collection device, an access service, a distribution service, a storage service, a management service and a client, an up-down cascade relation between services is established in a fixed routing manner, and a video is pushed to a storage server or a user terminal, as shown in fig. 3.
In the prior art, each video has a fixed route, for example, the video route of Camera1 in fig. 3 is: camera1 → access service 1 → distribution service 1 → storage service 1. The system needs to configure the route correctly before use, otherwise the monitoring video cannot be watched and stored normally. Because a fixed routing mode is adopted among services, the existing technical solution currently faces the following problems:
firstly, the redundant backup capability is weak, the redundant backup functions of access service, distribution service and storage service nodes cannot be realized, and the faults of the access service, the distribution service or the storage nodes can cause the associated video interruption and the data loss.
Secondly, the upgrading and capacity expanding workload is large, the configuration is tedious (the fixed routing relation among the services needs to be configured), and the subsequent system change also needs the configuration modification with larger workload.
And thirdly, the capacity of the nodes cannot be fully utilized without load balancing capacity, and the situations that some nodes are idle greatly and some nodes are busy exist.
Fourthly, the method has higher requirements on hardware performance and cannot fully utilize the existing server assets.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a comprehensive video monitoring cloud service system and method based on railway video technical specifications, which can provide a relatively complete redundancy backup function and have a load balancing capability.
In order to achieve the purpose, the invention adopts the following technical scheme: a comprehensive video monitoring cloud service system based on railway video technical specifications is characterized by comprising a core layer, a regional layer and an access layer, wherein the core layer comprises core nodes, and the regional layer and the access layer respectively comprise a plurality of nodes; each node comprises an acquisition terminal, an access server, a distribution server, a storage server and a management server, wherein the management server comprises a main server and a standby server, and the acquisition terminal, the access server, the distribution server and the storage server are deployed in a cluster mode.
Further, the service of each node is registered in a directory tree of the Zookeeper, the registration information includes an ip port and load information of the service, the directory tree is visible to all the nodes, and the registration structure of each node specifically includes: the storage server comprises a storage server 1 and a storage server 2 …, the access server comprises an access server 1 and an access server 2 …, the distribution server comprises a distribution server 1 and a distribution server 2 …, the routing information comprises resld1 and resld2 …, the routing relationship is dynamically established according to the load condition of each server, and the routing information is registered on a Zookeeper directory tree after the establishment is successful.
Further, the specific process of dynamic route creation is as follows: 1) the management server receives a video playing request, and searches for routing information, if the routing information exists, the routing information enters 2), and if the routing information does not exist, the routing information enters 3); 2) if the routing information of the same video is created, acquiring the existing routing information, opening the corresponding access server channel, opening the distribution server channel, returning the existing routing information to the request client, analyzing the routing information by the subsequent client, acquiring the ip and the port of the distribution server, and sending a play request to the port to acquire a video stream; 3) if the routing information does not exist, the management server acquires the access server and the distribution server with the lightest load, if the acquisition is successful, the management server registers the routing information, the routing information is returned after the routing is registered, if the distribution server and the access server with the lightest load cannot be acquired successfully, the video playing cannot be carried out, and the request is ended.
Further, the storage server redundancy backup process is as follows: the management server detects the offline state of the storage service, judges whether the storage service offline exists, if the storage service offline exists, the management server obtains the storage server with light load and sends the storage task on the storage server to the newly selected storage server to finish storage, and if the storage service offline does not exist, the management server continues to monitor the offline state of the storage service.
In order to achieve the purpose, the invention also adopts the following technical scheme: a comprehensive video monitoring method based on railway video technical specifications is characterized by comprising the following contents: constructing a three-level architecture comprising a core layer, a regional layer and an access layer, wherein the core layer comprises core nodes, and the regional layer and the access layer both comprise a plurality of nodes; each node comprises an acquisition terminal, an access server, a distribution server, a storage server and a management server, wherein the management server comprises a main server and a standby server, and the acquisition terminal, the access server, the distribution server and the storage server are deployed in a cluster mode; the service of each node is registered on a directory tree of the Zookeeper, and the registration information comprises ip, port and load information of the service; when the video is played, the routing relation among the acquisition terminal, the access server, the distribution server and the storage server is dynamically established according to the load condition of each server, the routing information is registered to a Zookeeper directory tree after the establishment is successful, and the same video is requested again only by acquiring a 'routing information' node from the Zookeeper directory tree to inquire and acquire the routing information; when the video is stored, the management server detects the offline state of the storage server, whether the storage service offline exists or not is detected, if the storage service offline exists, the management server obtains the storage server with light load and sends a storage task to the storage server to finish storage, and if the storage service offline does not exist, the management server continues to monitor the offline state of the storage service.
Due to the adoption of the technical scheme, the invention has the following advantages: 1. the invention provides a comprehensive video cloud service system based on railway video technical specifications and a distributed framework zookeeper, provides a relatively perfect redundant backup function, thoroughly eliminates single-point faults, and realizes 1+1 backup of a management server; and the access server, the distribution server and the N + M backup of the storage server. 2. The invention provides the load balancing capability, ensures that the load of each service is relatively balanced by preferentially selecting the service with light load to establish the dynamic routing mode, and avoids the condition that part of services are very busy and part of services are very idle. 3. The invention simplifies the capacity expansion work of the system by cluster deployment and dynamic route creation modes, and leads the capacity expansion to be convenient and simple. In summary, the problem of complicated upgrading and capacity expansion is solved, and due to the adoption of the dynamic routing mode and the cluster deployment mode, the system does not need to perform complicated routing configuration work during capacity expansion, capacity expansion can be completed only by adding nodes of access service, distribution service or storage service, and the upgrading and capacity expansion work is greatly simplified.
Drawings
FIG. 1 is a schematic diagram of a logic structure and an interface diagram of a conventional system;
fig. 2 is a flow of sending a play request to a lower level from an upper level of a three-level architecture of a conventional system;
FIG. 3 is a fixed routing scheme between services;
FIG. 4 is a comprehensive video monitoring cloud service system based on railway video technical specification and zookeeper's three-level architecture;
FIG. 5 illustrates the deployment of collection terminals and services within a single node of the present invention;
FIG. 6 is a registration structure of services on a Zookeeper in the system of the present invention;
FIG. 7 is a schematic diagram of a dynamic route creation process of the present invention;
FIG. 8 is a schematic diagram of a redundant backup process of a storage task according to the present invention.
Detailed Description
The present invention is described in detail below with reference to the attached drawings. It is to be understood, however, that the drawings are provided solely for the purposes of promoting an understanding of the invention and that they are not to be construed as limiting the invention.
As shown in fig. 4 and 5, the integrated video monitoring cloud service system provided by the present invention is constructed based on a three-level architecture of a railway video specification and a Zookeeper (Zookeeper is an open-source, high-performance, extensible distributed application program coordination service, and based on Paxos algorithm, implements distributed applications such as synchronization service, configuration maintenance, and naming service), and includes a core layer, a regional layer, and an access layer, where the core layer includes core nodes, the regional layer and the access layer include a plurality of nodes, and each node includes an acquisition terminal, an access server, a distribution server, a storage server, and a management server. The management server comprises a main server and a standby server, and the single point fault of the management server is eliminated by adopting a 1+1 hot standby mode. The acquisition terminal, the access server, the distribution server and the storage server are deployed in a cluster mode, wherein the railway video technical specification supports the railway video communication protocol of the latest version.
In a preferred embodiment, the service of each node is registered in a directory tree of the Zookeeper, the registration information includes ip ports and load information of the service, and the directory tree is visible to all nodes, as shown in fig. 6, each node includes an acquisition terminal, a storage server, an access server, and a distribution server. The registration structure specifically comprises: the routing information comprises resld1 and resld2 …, the storage servers comprise storage servers 1 and storage servers 2 …, the access servers comprise access servers 1 and access servers 2 …, and the distribution servers comprise distribution servers 1 and distribution servers 2 …. When the video is played, a fixed routing relation does not exist among the acquisition terminal, the access server, the distribution server and the storage server, the routing relation is dynamically established according to the load condition of each server, the routing information is registered to a Zookeeper directory tree after the establishment is successful, the same video does not need to be established again when the same video is requested again, and only the routing information is obtained by acquiring a routing information node from the directory tree to inquire.
In a preferred embodiment, as shown in fig. 7, the specific process of dynamic route creation is as follows:
1) the management server receives the video playing request, and searches for the routing information, if the routing information exists, the entry 2) is carried out, and if the routing information does not exist, the entry 3) is carried out;
2) if the same video route is established, acquiring the existing route information, opening a corresponding access server channel, opening a distribution server channel, returning the existing route information to the request client, analyzing the route information by the subsequent client, acquiring the ip and the port of the distribution server, and sending a play request to the port to acquire a video stream;
3) if the routing information does not exist, the management server acquires the access server and the distribution server with the lightest load, registers the routing information if the acquisition is successful, completes the creation of the routing request, returns the routing information, cannot play the video if the acquisition cannot be successfully performed on the distribution server and the access server with the lightest load, and ends the request.
The process solves the problem of load balance, if the video of the route is being played after the video playing request is generated, the route is directly obtained and the video stream is obtained from the distribution server described by the route, and the load of the access server and the acquisition terminal is not increased; if the video is not played, the access server and the distribution server with the lightest load are selected to provide the streaming service, so that the purpose of load balancing is achieved. Meanwhile, the problem of redundant backup is solved in the process, wherein the management server adopts a 1+1 backup mode, and the distribution, access and storage servers adopt an N + M backup mode. For the real-time stream part, if the access server or the distribution server is disconnected (after the disconnection, the routing information is automatically deleted by the zookeeper mechanism), the client resends the video playing request, the dynamic route creating process is executed again, and finally a new route is created, so that the redundant backup function of the real-time stream service is achieved.
In a preferred embodiment, as shown in fig. 8, the process of the storage server redundancy backup is as follows: the management server detects the offline state of the storage service, judges whether the storage service offline exists, if the storage service offline exists, the management service acquires the storage server with light load and sends the storage task on the storage server to a newly selected storage server to finish storage, and if the storage service offline does not exist, the management service continues to monitor the offline state of the storage service.
The invention also provides a comprehensive video monitoring method based on the railway video technical specification, which comprises the following specific processes:
1. constructing a three-level architecture comprising a core layer, a regional layer and an access layer based on the railway video technical specification and the Zookeeper, wherein the core layer comprises core nodes, and the regional layer and the access layer both comprise a plurality of nodes; each node comprises an acquisition terminal, an access server, a distribution server, a storage server and a management server, wherein the management server comprises a main server and a standby server in a 1+1 hot standby mode, and the acquisition terminal, the access server, the distribution server and the storage server are deployed in a cluster mode;
2. the service of each node is registered on a directory tree of the Zookeeper, and the registration information comprises ip, port and load information of the service;
3. when the video is played, the routing relation among the acquisition terminal, the access server, the distribution server and the storage server is dynamically established according to the load condition of each server, the routing information is registered on a Zookeeper directory tree after the establishment is successful, the same video is requested again without establishing the routing again, and only the routing information is acquired by acquiring a routing information node from the directory tree to inquire;
4. when the video is stored, the management server detects the offline state of the storage server, whether the storage service offline exists or not is detected, if the storage service offline exists, the management server obtains the storage server with light load and sends a storage task to the storage server to finish storage, and if the storage service offline does not exist, the management server continues to monitor the offline state of the storage service.
Additionally, the systems and methods described, as well as the illustrations of various embodiments, can be combined or integrated with other systems, modules, techniques, or methods without departing from the scope of the application. The foregoing is directed to embodiments of the present invention, and it is understood that various modifications and improvements can be made by those skilled in the art without departing from the spirit of the invention.
Claims (5)
1. A comprehensive video monitoring cloud service system based on railway video technical specifications is characterized in that the cloud service system comprises a core layer, a regional layer and an access layer, wherein the core layer comprises core nodes, and the regional layer and the access layer respectively comprise a plurality of nodes; each node comprises an acquisition terminal, an access server, a distribution server, a storage server and a management server, wherein the management server comprises a main server and a standby server, and the acquisition terminal, the access server, the distribution server and the storage server are deployed in a cluster mode;
the server of each node is registered on a directory tree of the Zookeeper, the registration information includes ip ports and load information of the service, the directory tree is visible for all the nodes, and the registration structure of each node specifically includes: the storage server comprises a storage server 1 and a storage server 2 …, the access server comprises an access server 1 and an access server 2 …, the distribution server comprises a distribution server 1 and a distribution server 2 …, the routing information comprises resld1 and resld2 …, the routing relationship is dynamically established according to the load condition of each server, and the routing information is registered on a Zookeeper directory tree after the establishment is successful.
2. The integrated video monitoring cloud service system according to claim 1, wherein the specific process of dynamic route creation is as follows:
1) the management server receives a video playing request, and searches for routing information, if the routing information exists, the routing information enters 2), and if the routing information does not exist, the routing information enters 3);
2) if the routing information of the same video is created, acquiring the existing routing information, opening the corresponding access server channel, opening the distribution server channel, returning the existing routing information to the request client, analyzing the routing information by the subsequent client, acquiring the ip and the port of the distribution server, and sending a play request to the port to acquire a video stream;
3) if the routing information does not exist, the management server acquires the access server and the distribution server with the lightest load, if the acquisition is successful, the management server registers the routing information, the routing information is returned after the routing is registered, if the distribution server and the access server with the lightest load cannot be acquired successfully, the video playing cannot be carried out, and the request is ended.
3. The integrated video monitoring cloud service system according to claim 1, wherein the storage server redundancy backup process is as follows: the management server detects the offline state of the storage service, judges whether the storage service offline exists, if the storage service offline exists, the management server obtains the storage server with light load and sends the storage task on the storage server to the newly selected storage server to finish storage, and if the storage service offline does not exist, the management server continues to monitor the offline state of the storage service.
4. A comprehensive video monitoring method based on railway video technical specifications is characterized by comprising the following contents:
constructing a three-level architecture comprising a core layer, a regional layer and an access layer, wherein the core layer comprises core nodes, and the regional layer and the access layer both comprise a plurality of nodes; each node comprises an acquisition terminal, an access server, a distribution server, a storage server and a management server, wherein the management server comprises a main server and a standby server, and the acquisition terminal, the access server, the distribution server and the storage server are deployed in a cluster mode;
the service of each node is registered on a directory tree of the Zookeeper, and the registration information comprises ip, port and load information of the service;
when the video is played, the routing relation among the acquisition terminal, the access server, the distribution server and the storage server is dynamically established according to the load condition of each server, the successfully established routing information is registered to a Zookeeper directory tree, and the same video is requested again only by acquiring a 'routing information' node from the Zookeeper directory tree to inquire and acquire the routing information;
when the video is stored, the management server detects the offline state of the storage server, whether the storage service offline exists or not is detected, if the storage service offline exists, the management server obtains the storage server with light load and sends a storage task to the storage server to finish storage, and if the storage service offline does not exist, the management server continues to monitor the offline state of the storage service.
5. The integrated video monitoring method according to claim 4, wherein the specific process of dynamic route creation is as follows:
1) the management server receives the video playing request, and searches for the routing information, if the routing information exists, the entry 2) is carried out, and if the routing information does not exist, the entry 3) is carried out;
2) if the routing information of the same video is created, acquiring the existing routing information, opening a corresponding access server channel, opening a distribution server channel, returning the existing routing information to a request client, analyzing the routing information by a subsequent client, acquiring an ip and a port of the distribution server, and sending a play request to the port to acquire a video stream;
3) if the routing information does not exist, the management server acquires the access server and the distribution server with the lightest load, if the acquisition is successful, the routing information is registered, the routing information is returned after the routing is registered, if the distribution server and the access server with the lightest load cannot be acquired successfully, the video playing cannot be carried out, and the request is finished.
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| CN110445697B (en) * | 2019-08-08 | 2021-08-27 | 杭州阿启视科技有限公司 | Video big data cloud platform equipment access service method |
| CN113301350B (en) * | 2021-04-01 | 2022-04-26 | 广州市保伦电子有限公司 | Distributed audio and video task management and distribution system and implementation method |
| CN114785797A (en) * | 2022-04-26 | 2022-07-22 | 南京甄视智能科技有限公司 | Video storage disaster tolerance system and method |
| CN116193165A (en) * | 2022-12-28 | 2023-05-30 | 杭州当虹科技股份有限公司 | Efficient video protocol conversion distributed cluster scheduling method and system |
| CN116991674B (en) * | 2023-08-17 | 2024-04-12 | 广西壮族自治区自然资源信息中心 | High concurrency service architecture for real estate registration information and data processing method thereof |
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| CN108600322A (en) | 2018-09-28 |
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