CN103595736A - An access request processing method and apparatus in a video monitoring system - Google Patents
An access request processing method and apparatus in a video monitoring system Download PDFInfo
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- CN103595736A CN103595736A CN201210287805.XA CN201210287805A CN103595736A CN 103595736 A CN103595736 A CN 103595736A CN 201210287805 A CN201210287805 A CN 201210287805A CN 103595736 A CN103595736 A CN 103595736A
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Abstract
The invention discloses an access request processing method and apparatus in a video monitoring system. In the access request processing method, a cluster management node establishes a mapping relation between monitoring devices and video forwarding servers in the video monitoring system in advance, wherein each monitoring device is uniquely mapped to a video forwarding server; when receiving an access request transmitted from any user aimed at any monitoring device X, the cluster management node executes following processing: determining the video forwarding server Y to which the monitoring device X mapped; and redirecting the access request to the video forwarding server Y which is to complete the processing of the access request. The scheme provided in the invention is capable of overcoming the performance bottleneck of the monitoring devices.
Description
Technical field
The present invention relates to Video Supervision Technique, particularly access request processing method and the device in video monitoring system.
Background technology
In the video monitoring system of security protection industry, a lot of watch-dogs that conventionally distributing, as camera, digital video recorder (DVR, Digital Video Recorder), digital video frequency server (DVS, Digital Video Server) etc.
Conventionally, the disposal ability of single watch-dog is limited, user's visit capacity of simultaneously supporting is limited, the watch-dog of some high definition can only be supported at most user's access even simultaneously, for this reason, introduced video forwarding server cluster, in order to support user's access of large concurrent, to avoid the performance bottleneck of single watch-dog.Specifically, mainly utilize the distribution function of each video forwarding server, soon from watch-dog, get Yi road video code flow and convert multi-channel video code stream to, simultaneously for a plurality of users provide Video service.Fig. 1 is the schematic diagram that is related between existing user, video forwarding server cluster and watch-dog.
Correspondingly, owing to relating to a plurality of video forwarding servers, therefore also need to consider the problem of load balancing between each video forwarding server.
In prior art, the idle degrees even load balance policy of each video forwarding server of Main Basis is realized load balancing, but, can there is certain problem in actual applications in this mode, as: the access for same watch-dog may be assigned on different video forwarding servers, thereby may cause watch-dog to occur performance bottleneck etc.
Summary of the invention
In view of this, the invention provides access request processing method and device in video monitoring system, can overcome the performance bottleneck of watch-dog.
For achieving the above object, technical scheme of the present invention is achieved in that
In an access request processing method, comprising:
Cluster management node is set up watch-dog in described video monitoring system and the mapping relations between video forwarding server in advance, and wherein, each watch-dog is all unique is mapped to a video forwarding server;
When receiving the access request that arbitrary user sends for arbitrary watch-dog X, described cluster management node carries out following processing:
Determine the video forwarding server Y that described watch-dog X is mapped to;
Described access request is redirected to described video forwarding server Y upper, by described video forwarding server Y, completes the processing to described access request.
A node, comprising:
Set up module, for setting up in advance the watch-dog of place video monitoring system and the mapping relations between video forwarding server, wherein, each watch-dog is all unique is mapped to a video forwarding server;
Processing module, for when receiving the access request that arbitrary user sends for arbitrary watch-dog X, carries out following processing: determine the video forwarding server Y that described watch-dog X is mapped to; Described access request is redirected to described video forwarding server Y upper, by described video forwarding server Y, completes the processing to described access request.
Visible, adopt scheme of the present invention, each watch-dog only can uniquely be mapped on a video forwarding server, that is to say, for each watch-dog, synchronization at most only can be accessed by a video forwarding server, thereby has overcome the performance bottleneck of watch-dog.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that is related between existing user, video forwarding server cluster and watch-dog.
Fig. 2 is the flow chart of the access request processing method embodiment in video monitoring system of the present invention.
Fig. 3 is the number range schematic diagram that each dummy node of the present invention is corresponding.
Fig. 4 is the mapping relations schematic diagram between watch-dog of the present invention and dummy node.
Fig. 5 is the mapping relations schematic diagram between dummy node of the present invention and video forwarding server.
Fig. 6 is the mapping relations schematic diagram between watch-dog of the present invention, dummy node and video forwarding server.
Fig. 7 is the implementation procedure schematic diagram of step 22 of the present invention.
Fig. 8 is that user of the present invention obtains the implementation procedure schematic diagram of video code flow from watch-dog X by two-stage video forwarding server.
Fig. 9 is the realization flow figure of step 22 of the present invention.
Figure 10 is the composition structural diagrams intention of cluster management node embodiment of the present invention.
Embodiment
For problems of the prior art, access request processing scheme in video monitoring system after a kind of improvement is proposed in the present invention, cluster management node in video forwarding server cluster receives user's access request, then according to load-balancing algorithm, user's access request is redirected on concrete video forwarding server, by video forwarding server, to watch-dog, obtain video code flow, and return to user.
For make technical scheme of the present invention clearer, understand, referring to the accompanying drawing embodiment that develops simultaneously, scheme of the present invention is described in further detail.
Fig. 2 is the flow chart of the access request processing method embodiment in video monitoring system of the present invention.As shown in Figure 2, comprise the following steps:
Step 21: cluster management node is set up watch-dog in video monitoring system and the mapping relations between video forwarding server in advance, wherein, each watch-dog is all unique is mapped to a video forwarding server.
The specific implementation of this step can comprise the steps 1)～4).
1) each watch-dog that cluster management node is respectively in video monitoring system distributes a unique index number, such as, can be using the IP+ port numbers+channel number of each watch-dog as its index number.
2) cluster management node creates N dummy node at self, N is positive integer, and the number T that is conventionally greater than the video forwarding server (the video forwarding server of registering) in video monitoring system on cluster management node, the numbering of N dummy node is followed successively by 1～N; And, creating the numerical space of a 0～N*K, step-length is K, wherein, number range corresponding to dummy node that is numbered n is (n-1) * K～n*K, 1≤n≤N, K > 0.
Fig. 3 is the number range schematic diagram that each dummy node of the present invention is corresponding.As shown in Figure 3, the number range that is numbered 1 dummy node and is dummy node 1 correspondence is 0～K, and the number range that is numbered 2 dummy node and is dummy node 2 correspondences is K～2K, and other repeats no longer one by one.
3) for each watch-dog, cluster management node is respectively according to the index number of this watch-dog, according to pre-defined algorithm, calculate a numerical value M between 0～N*K, and this watch-dog is mapped on dummy node corresponding to number range under numerical value M.
Such as, if the numerical value M calculating according to the index number of a watch-dog is positioned at the number range of K～2K, this watch-dog is mapped to dummy node 2.
Concrete which kind of algorithm that adopts comes evaluation M to be decided according to the actual requirements, such as, can adopt the combination of Hash (Hash) algorithm and modulus algorithm.
In actual applications, after calculating numerical value M according to the index number of a watch-dog, also this watch-dog can be mapped on the dummy node that is numbered M/K, if the value of M/K is not integer, round up or down.Concrete which kind of mode that adopts can be decided according to the actual requirements.
Fig. 4 is the mapping relations schematic diagram between watch-dog of the present invention and dummy node.Each watch-dog is all unique is mapped to a dummy node, but dummy node may and a plurality of watch-dog between there are mapping relations.
4) cluster management node is set up the mapping relations between dummy node and video forwarding server, wherein, each dummy node is unique being mapped on a video forwarding server all, but each video forwarding server can and an above dummy node between there are mapping relations, video forwarding server may and a plurality of dummy node between there are mapping relations.
As previously mentioned, the number N of dummy node is greater than the number T of video forwarding server conventionally, preferably, the distribution between the number N of dummy node and the number T of video forwarding server can be according to factor settings such as the idle degrees of user's request amount of watch-dog, video forwarding server and performances.
Illustrate, the number of supposing watch-dog is 36, the number N=6 of dummy node, number consecutively is 1～6 respectively, step-length K=6, the number T=4 of video forwarding server, number consecutively is 1～4 respectively, specifically be allocated as follows: be numbered 1 video video forwarding server and be mapped to the dummy node that is numbered 1, be numbered 2 video video forwarding server and be mapped to the dummy node that is numbered 2, be numbered 3 video video forwarding server and be mapped to the dummy node that is numbered 3 and 4, be numbered 4 video video forwarding server and be mapped to the dummy node that is numbered 5 and 6, because for the watch-dog being mapped to for the dummy node that is numbered 1 and 2, user is frequent and a large amount of to their access request, or the performance that is numbered 1 and 2 video forwarding server is lower, and be numbered 3, 4, 5, the watch-dog that 6 dummy node is mapped to, user seldom proposes access request or other factors to these watch-dogs.In sum, the distribution setting between the number N of dummy node and the number T of video forwarding server, the factors such as user's request amount of considering watch-dog that can be suitable, the idle degrees of video forwarding server and performance.
Fig. 5 is the mapping relations schematic diagram between dummy node of the present invention and video forwarding server.
Through above-mentioned steps 1)～4) processing after, each watch-dog all can uniquely be mapped to a dummy node, and each dummy node all can uniquely be mapped to a video forwarding server, therefore, each watch-dog all can uniquely be mapped to a video forwarding server.Fig. 6 is the mapping relations schematic diagram between watch-dog of the present invention, dummy node and video forwarding server.
The benefit of introducing dummy node is cluster management node when realizing watch-dog to the mapping of video forwarding server, do not spend and consider there are on earth how many video forwarding servers in video monitoring system, and when having video forwarding server add or exit, and watch-dog is when adding or exiting, need not remap to original watch-dog, thus the scale of extending video supervisory control system and performance etc. easily.
The concrete value of the N relating to above, K, T etc. can be decided according to the actual requirements.
Step 22: when receiving the access request that arbitrary user sends for arbitrary watch-dog X, cluster management node carries out following processing: determine the video forwarding server Y that watch-dog X is mapped to; Access request is redirected to video forwarding server Y upper, by video forwarding server, Y completes the processing to access request.
On the basis of completing steps 21, follow-up, when often receiving the access request that arbitrary user sends for arbitrary watch-dog X, cluster management node all can be processed according to mode shown in step 22.
It should be noted that, for explaining conveniently, in various embodiments of the present invention, with watch-dog X, represent watch-dog corresponding to arbitrary access request that arbitrary user sends, with video forwarding server Y, represent the video forwarding server that watch-dog X is mapped to.
Fig. 7 is the implementation procedure schematic diagram of step 22 of the present invention.Specifically, when often receiving the access request that arbitrary user sends for arbitrary watch-dog X, first cluster management node can determine the dummy node that watch-dog X is mapped to, afterwards, the video forwarding server Y that the dummy node that further definite watch-dog X is mapped to is mapped to, and access request is redirected on video forwarding server Y, by video forwarding server, Y completes the processing to access request, be that cluster management node is by the URL(uniform resource locator) (URL of video forwarding server Y, Uniform Resource Locator) send to user, user is according to the URL accessing video forwarding server Y receiving, by video forwarding server, Y obtains video code flow from watch-dog X, and return to user.
Preferably, in step 22, cluster management node, before access request being redirected on video forwarding server Y, also can first determine whether the load value of video forwarding server Y reaches the upper limit, if not, access request is redirected on video forwarding server Y; If so, access request is redirected on the video forwarding server of a selected load value lower than preset threshold value, by selected video forwarding server by carrying out alternately, completing the processing to access request with video forwarding server Y.
In cluster management node, can safeguard the real-time load value of each video forwarding server, when determining that the load value of video forwarding server Y reaches in limited time, can return to user the URL of a cascade, in the URL of described cascade, can comprise two-stage URL, second level URL is the URL of video forwarding server Y, first order URL is the URL of selected video forwarding server, user can access selected video forwarding server according to first order URL, and second level URL is sent to selected video forwarding server, afterwards, selected video forwarding server obtains the video code flow of watch-dog Y from video forwarding server Y, and return to user.
Fig. 8 is that user of the present invention obtains the implementation procedure schematic diagram of video code flow from watch-dog X by two-stage video forwarding server.As shown in Figure 8, video forwarding server Y ' is selected video forwarding server, it is the lighter video forwarding server of the selected load of cluster management node, use it to alleviate the load pressure of video forwarding server Y, and can not increase the performance burden of watch-dog X, which video forwarding server How to choose can be decided according to the actual requirements as video forwarding server Y '.
In addition, cluster management node, before determining the video forwarding server Y that watch-dog X is mapped to, also can determine that whether watch-dog X is legal, if so, determines the video forwarding server Y that watch-dog X is mapped to, otherwise, determine that this accesses unsuccessfully.
Based on above-mentioned introduction, the realization flow figure that Fig. 9 is step 22 of the present invention.As shown in Figure 9, comprising:
Step 91: cluster management node receives the access request that arbitrary user sends for arbitrary watch-dog X.
Step 92: whether X is legal for cluster management node determination watch-dog, if so, performs step 93, otherwise, perform step 97.
Whether how to confirm watch-dog X is legal is prior art.
Step 93: the video forwarding server Y that cluster management node determination watch-dog X is mapped to.
Step 94: whether the load value of cluster management node determination video forwarding server Y reaches the upper limit, if not, performs step 95, if so, performs step 96.
Step 95: it is upper that cluster management node is redirected to video forwarding server Y by access request, and Y completes the processing to access request, process ends by video forwarding server.
Step 96: cluster management node is redirected to access request on the video forwarding server of a selected load value lower than preset threshold value, by selected video forwarding server by carrying out alternately with video forwarding server Y, complete the processing to access request, process ends.
Step 97: determine that this accesses unsuccessfully, process ends.
So far, completed the introduction about the inventive method embodiment.
Figure 10 is the composition structural diagrams intention of cluster management node embodiment of the present invention.As shown in figure 10, comprising:
Set up module, for setting up in advance the watch-dog of place video monitoring system and the mapping relations between video forwarding server, wherein, each watch-dog is all unique is mapped to a video forwarding server;
Processing module, for when receiving the access request that arbitrary user sends for arbitrary watch-dog X, carries out following processing: determine the video forwarding server Y that watch-dog X is mapped to; Access request is redirected to video forwarding server Y upper, by video forwarding server, Y completes the processing to access request.
Wherein, set up in module and can specifically comprise:
Allocation units, distribute a unique index number for being respectively each watch-dog of video monitoring system;
Set up unit, for creating N dummy node, N is positive integer, and is greater than the number T of the video forwarding server in video monitoring system, and the numbering of N dummy node is followed successively by 1～N; And create the numerical space of a 0～N*K, wherein, number range corresponding to dummy node that is numbered n is (n-1) * K～n*K, 1≤n≤N, K > 0; For each watch-dog, respectively according to the index number of this watch-dog, according to pre-defined algorithm, calculate a numerical value M between 0～N*K, and this watch-dog is mapped on dummy node corresponding to number range under numerical value M; Set up the mapping relations between dummy node and video forwarding server, wherein, each dummy node is unique being mapped on a video forwarding server all, between each video forwarding server and an above dummy node, has mapping relations;
Processing module is determined the dummy node that watch-dog X is mapped to, and further determines the video forwarding server Y that dummy node that watch-dog X is mapped to is mapped to.
In processing module, can specifically comprise:
Receiving element, for when receiving the access request that arbitrary user sends for arbitrary watch-dog X, self function is carried out in notifier processes unit;
Processing unit, for the video forwarding server Y that determines that watch-dog X is mapped to; Access request is redirected to video forwarding server Y upper, by video forwarding server, Y completes the processing to access request.
In addition, processing unit can be further used for, and before access request being redirected on video forwarding server Y, determines whether the load value of video forwarding server Y reaches the upper limit, if not, access request is redirected on video forwarding server Y; If so, access request is redirected on the video forwarding server of a selected load value lower than preset threshold value, by selected video forwarding server by carrying out alternately, completing the processing to access request with video forwarding server Y.
Processing unit also can be further used for, and before determining the video forwarding server Y that watch-dog X is mapped to, determines that whether watch-dog X is legal, if so, determines the video forwarding server Y that watch-dog X is mapped to, otherwise, determine that this accesses unsuccessfully.
The specific works flow process of Figure 10 shown device embodiment please refer to the respective description in preceding method embodiment, repeats no more herein.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (9)
1. the access request processing method in video monitoring system, is characterized in that, comprising:
Cluster management node is set up watch-dog in described video monitoring system and the mapping relations between video forwarding server in advance, and wherein, each watch-dog is all unique is mapped to a video forwarding server;
When receiving the access request that arbitrary user sends for arbitrary watch-dog X, described cluster management node carries out following processing:
Determine the video forwarding server Y that described watch-dog X is mapped to;
Described access request is redirected to described video forwarding server Y upper, by described video forwarding server Y, completes the processing to described access request.
2. method according to claim 1, is characterized in that,
Described cluster management node is set up watch-dog in described video monitoring system and the mapping relations between video forwarding server comprise:
Each watch-dog that described cluster management node is respectively in described video monitoring system distributes a unique index number;
Described cluster management node creates N dummy node at self, and N is positive integer, and is greater than the number T of the video forwarding server in described video monitoring system, and the numbering of a described N dummy node is followed successively by 1～N; And create the numerical space of a 0～N*K, wherein, number range corresponding to dummy node that is numbered n is (n-1) * K～n*K, 1≤n≤N, K > 0;
For each watch-dog, described cluster management node is respectively according to the index number of this watch-dog, according to pre-defined algorithm, calculate a numerical value M between 0～N*K, and this watch-dog is mapped on dummy node corresponding to number range under numerical value M;
Described cluster management node is set up the mapping relations between dummy node and video forwarding server, wherein, each dummy node is unique being mapped on a video forwarding server all, between each video forwarding server and an above dummy node, has mapping relations;
The described video forwarding server Y that determines that described watch-dog X is mapped to comprises:
The dummy node that described in described cluster management node determination, watch-dog X is mapped to, and further determine the video forwarding server Y that dummy node that described watch-dog X is mapped to is mapped to.
3. method according to claim 1 and 2, is characterized in that, described by described access request be redirected to described video forwarding server Y upper before, further comprise:
Described in described cluster management node determination, whether the load value of video forwarding server Y reaches the upper limit, if not, described access request is redirected on described video forwarding server Y;
If, described access request is redirected on the video forwarding server of a selected load value lower than preset threshold value, by selected video forwarding server by carrying out alternately, completing the processing to described access request with described video forwarding server Y.
4. method according to claim 1 and 2, is characterized in that, before the video forwarding server Y that described definite described watch-dog X is mapped to, further comprises:
Described in described cluster management node determination, whether watch-dog X is legal, if so, determines the video forwarding server Y that described watch-dog X is mapped to, otherwise, determine that this accesses unsuccessfully.
5. a cluster management node, is characterized in that, comprising:
Set up module, for setting up in advance the watch-dog of place video monitoring system and the mapping relations between video forwarding server, wherein, each watch-dog is all unique is mapped to a video forwarding server;
Processing module, for when receiving the access request that arbitrary user sends for arbitrary watch-dog X, carries out following processing: determine the video forwarding server Y that described watch-dog X is mapped to; Described access request is redirected to described video forwarding server Y upper, by described video forwarding server Y, completes the processing to described access request.
6. cluster management node according to claim 5, is characterized in that, the described module of setting up comprises:
Allocation units, distribute a unique index number for being respectively each watch-dog of described video monitoring system;
Set up unit, for creating N dummy node, N is positive integer, and is greater than the number T of the video forwarding server in described video monitoring system, and the numbering of a described N dummy node is followed successively by 1～N; And create the numerical space of a 0～N*K, wherein, number range corresponding to dummy node that is numbered n is (n-1) * K～n*K, 1≤n≤N, K > 0; For each watch-dog, respectively according to the index number of this watch-dog, according to pre-defined algorithm, calculate a numerical value M between 0～N*K, and this watch-dog is mapped on dummy node corresponding to number range under numerical value M; Set up the mapping relations between dummy node and video forwarding server, wherein, each dummy node is unique being mapped on a video forwarding server all, between each video forwarding server and an above dummy node, has mapping relations;
Described processing module is determined the dummy node that described watch-dog X is mapped to, and further determines the video forwarding server Y that dummy node that described watch-dog X is mapped to is mapped to.
7. according to the cluster management node described in claim 5 or 6, it is characterized in that, described processing module comprises:
Receiving element, for when receiving the access request that arbitrary user sends for arbitrary watch-dog X, self function is carried out in notifier processes unit;
Described processing unit, for the video forwarding server Y that determines that described watch-dog X is mapped to; Described access request is redirected to described video forwarding server Y upper, by described video forwarding server Y, completes the processing to described access request.
8. cluster management node according to claim 7, is characterized in that,
Described processing unit is further used for, before described access request being redirected on described video forwarding server Y, whether the load value of determining described video forwarding server Y reaches the upper limit, if not, described access request is redirected on described video forwarding server Y; If, described access request is redirected on the video forwarding server of a selected load value lower than preset threshold value, by selected video forwarding server by carrying out alternately, completing the processing to described access request with described video forwarding server Y.
9. cluster management node according to claim 7, is characterized in that,
Described processing unit is further used for, and before determining the video forwarding server Y that described watch-dog X is mapped to, determines that whether described watch-dog X is legal, if, determine the video forwarding server Y that described watch-dog X is mapped to, otherwise, determine that this accesses unsuccessfully.
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