CN112486649B - GIS service gateway platform considering space constraint - Google Patents
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Abstract
The invention discloses a GIS service gateway platform, which comprises: the application client layer is used for responding to the GIS service calling instruction, generating a GIS service calling request and sending the GIS service calling request to the load balancing layer; the load balancing layer sends the load balancing layer to the intelligent gateway component layer; wherein, the GIS service call request comprises a space screening parameter; the intelligent gateway component layer comprises a space screening component and a routing component, wherein the routing component receives a GIS service call request, the space screening component converts the space screening parameter into a space range, and the routing component also sends the GIS service call request carrying the space range to a corresponding target GIS service in the GIS service layer; the GIS service layer is pre-stored with a plurality of GIS services, the target GIS service is one of the GIS services, and the target GIS service obtains a target GIS service result according to the space range and returns the result to the application client layer. By adopting the embodiment of the invention, the space screening can be realized, and the GIS service access management platform is provided, so that the safety management and control of GIS service access is enhanced.
Description
Technical Field
The invention relates to the technical field of geographic information service, in particular to a GIS service gateway platform considering space constraint.
Background
With the development of internet geographic information technology in recent years, more and more government geographic information is opened to the outside in a service mode, geographic information services are often from different departments and platforms, service modes have the characteristics of diversification and isomerism, such as map service, space analysis service and the like, meanwhile, the geographic information service has higher requirements on safety, and it is important how to ensure the safety in the geographic information service opening process and provide a unified access management entrance for multi-source isomerism GIS service so as to improve the use efficiency of the GIS service.
The gateway is used as an important platform in a front-end and back-end separation architecture of large-scale Internet application, carries important data input and output work, has the core function of routing and data forwarding for services, is a unique data access and export of front-end and back-end interaction and internal and external network interaction, and is also a control point for uniformly controlling all services in the whole distributed architecture. At present, the gateway is applied to GIS service management in less research, and the existing research uses a reverse proxy server to simply forward a GIS service call request, does not uniformly manage GIS service access, has poor safety, does not consider realizing space screening on GIS service, and is difficult to meet complex GIS service application scenes.
Disclosure of Invention
The embodiment of the invention aims to provide a GIS service gateway platform taking space constraint into consideration, which can realize space screening on GIS services under the given space constraint condition, realize intelligent and fine management of the GIS services, provide a management platform for accessing the GIS services and effectively enhance the security management and control on the GIS service access.
To achieve the above object, an embodiment of the present invention provides a GIS service gateway platform considering space constraint, including:
the application client layer is used for responding to the GIS service calling instruction, generating a GIS service calling request and sending the GIS service calling request to the load balancing layer; wherein, the GIS service call request comprises a space screening parameter; the space screening parameters are administrative area names, and the space range is a geographic range corresponding to the administrative area names;
the load balancing layer is used for receiving the GIS service calling request according to a load balancing strategy based on the virtual server cluster and sending the GIS service calling request to the intelligent gateway component layer according to a scheduling algorithm;
the intelligent gateway component layer comprises a space screening component and a routing component, wherein the routing component is used for receiving the GIS service calling request, the space screening component is used for converting the space screening parameter into a space range, and the routing component is also used for sending the GIS service calling request carrying the space range to corresponding target GIS service in the GIS service layer;
and the GIS service layer is pre-stored with a plurality of GIS services, the target GIS service is one of the GIS services, the target GIS service obtains a target GIS service result according to the space range, and the target GIS service result is returned to the application client layer through the routing component.
As an improvement of the above scheme, the scheduling algorithm includes one of the following algorithms: a first come first serve scheduling algorithm, a short job priority scheduling algorithm, a round robin algorithm and a multi-stage feedback queue algorithm.
As an improvement of the above scheme, the intelligent gateway component layer further comprises a rights authentication component; the permission authentication component is used for checking the input user name and password before the application client layer responds to the GIS service call instruction; when the user name is matched with the password, the application client layer responds to a GIS service calling instruction; and when the user name and the password are not matched, the application client layer does not respond to the GIS service calling instruction.
As an improvement of the above scheme, the intelligent gateway component layer further comprises an IP black-and-white list component; the IP black-and-white list component is used for prohibiting the routing component from forwarding the GIS service calling request sent by the IP address in the IP black list to the corresponding GIS service.
As an improvement of the above scheme, the intelligent gateway component layer further comprises a real-time monitoring component; the real-time monitoring component is used for monitoring at least one of a service status code, a service delay time and a service connection number of the GIS service in real time.
As an improvement of the above solution, the intelligent gateway component layer further includes a current limiting control component; the current limiting control component is used for controlling the access time period, the access flow and the access times of the application client layer to access the GIS service.
As an improvement of the above solution, the intelligent gateway component layer further includes a log analysis component; the log analysis component is used for recording access information of the GIS service and analyzing the recorded access information.
As an improvement of the above solution, the GIS service gateway platform includes:
a spatial data service, a map service, a spatial query service, and a spatial analysis service, wherein the spatial data service provides services based on geographic information metadata, including content, quality, and description information of geographic information data; the map service supports map services released under different platforms, including ArcGIS map service, superMap map service, geoServer map service, and standard OGC map service; the space inquiry service provides space inquiry service of geographic information data, including space positioning inquiry service and space relation inquiry service; the spatial analysis service provides spatial analysis service of geographic information data, including spatial statistics service, buffer area analysis service and superposition analysis service.
Compared with the prior art, the GIS service gateway platform considering space constraint provided by the embodiment of the invention comprises an application client layer, an intelligent gateway component layer and a GIS service layer. Responding to a GIS service calling instruction through the application client layer, generating a GIS service calling request and sending the GIS service calling request to a load balancing layer, wherein the load balancing layer receives the GIS service calling request according to a load balancing strategy and sends the GIS service calling request to an intelligent gateway component layer; the intelligent gateway component layer comprises a space screening component and a routing component, wherein the routing component is used for receiving the GIS service calling request, the space screening component is used for converting the space screening parameter into a space range, and the routing component is also used for sending the GIS service calling request carrying the space range to corresponding target GIS service in the GIS service layer; and the GIS service layer is pre-stored with a plurality of GIS services, the target GIS service is one of the GIS services, the target GIS service obtains a target GIS service result according to the space range, and the target GIS service result is returned to the application client layer through the routing component. The GIS service gateway platform provided by the embodiment of the invention forwards all requests for GIS service through the intelligent gateway component layer, provides a centralized management platform for GIS service access, and can effectively enhance the security management and control of GIS service access; meanwhile, space screening can be realized under the given space constraint condition, and the intelligent and fine management of GIS service is realized; in addition, all components of the intelligent gateway component layer are pluggable components, so that the flexibility and expansibility of the platform are enhanced.
Drawings
Fig. 1 is a schematic structural diagram of a GIS service gateway platform according to an embodiment of the present invention, where space constraints are considered;
fig. 2 is a general architecture diagram of a GIS service gateway platform that takes into account space constraints according to an embodiment of the present invention;
fig. 3 is a physical architecture diagram of a GIS service gateway platform according to an embodiment of the present invention, which takes into consideration space constraints.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a schematic structural diagram of a GIS service gateway platform according to an embodiment of the present invention is provided; the GIS service gateway platform comprises:
the application client layer 10 is configured to respond to a GIS service call instruction, generate a GIS service call request, and send the GIS service call request to the load balancing layer 20; wherein, the GIS service call request comprises a space screening parameter;
alternatively, the application client layer 10 is a web page client, or the application client layer 10 is an application program client. Illustratively, the application client layer 10 accesses the GIS service resources registered to the platform through the standard HTTP request protocol, without concern about the specific protocol used by the internal implementation of the service, and without knowledge of the internal composition of the service during service reconfiguration.
The load balancing layer 20 is configured to receive the GIS service call request according to a load balancing policy based on the virtual server cluster, and send the GIS service call request to the intelligent gateway component layer 30 according to a scheduling algorithm;
the physical architecture of the GIS service gateway platform taking into account space constraints as shown in fig. 3 is exemplary, and the load balancing layer accepts a request of an application client layer, and reasonably distributes the GIS service call request to a plurality of gateway server nodes, so as to improve the performance of service response and the availability of the platform, and ensure the continuity of services; the load balancing layer shown in fig. 3 adopts a load balancing high availability scheme of lvs+keepalive mode, LVS is a shorthand of Linux Virtual Server, namely a Linux virtual server, is a virtual server cluster system and is mainly responsible for forwarding service requests, and has higher anti-load performance. In order to ensure high availability of the load cluster, whether any LVS node works normally or not needs to be detected, keepAlived is a health checking tool specially provided for LVS, mainly provides two functions, namely node health state checking and automatic fault switching, and can automatically transfer a request to a normal working node when a node fault is detected; it should be noted that, the GIS service layer in fig. 3 includes a plurality of GIS servers, and the GIS servers provide GIS services;
optionally, the scheduling algorithm includes one of the following algorithms: a first come first serve scheduling algorithm, a short job priority scheduling algorithm, a round robin algorithm and a multi-stage feedback queue algorithm. It should be noted that, the first-come first-served scheduling algorithm, the short-job first-served scheduling algorithm, the round robin algorithm and the multi-stage feedback queue algorithm may refer to the prior art, and are not described herein.
The intelligent gateway component layer 30 comprises a space screening component 31 and a routing component 32, wherein the routing component 32 is used for receiving the GIS service call request, the space screening component 31 is used for converting the space screening parameter into a space range, and the routing component 32 is also used for sending the GIS service call request carrying the space range to a corresponding target GIS service in the GIS service layer; the space screening parameter is an input administrative region name, and the space range is a geographic range corresponding to the administrative region name;
for example, for a user in the first class of the city, when performing GIS service access, screening is performed according to the spatial range of the first class of the city, and the response result of the service is limited in the spatial range of the first class of the city:
curl-X POST http://localhost:port/services/serviceA/plugins
--data"name＝spatial-limit"
data "config.spatial = guangzhou";
and the space screening component is started for the service serviceA, and the space range of the service is set to be within the geographic range corresponding to the Guangzhou municipal district.
It should be noted that, the curl is a command line tool that uses URL syntax, supports HTTP protocol, and is used to request the Web server to implement a corresponding operation, -X POST represents setting the HTTP request mode to POST, -data represents a key value pair of an additional parameter, which will not be described in detail below.
The routing component 32 is a basic core component of the intelligent gateway component layer 30, and implements a routing control function. The component defines routing rules for GIS service invocation requests, routes are associated with services, GIS service invocation requests that each match a given route will be submitted to the corresponding GIS service, forwarding is achieved by a combination of the services and routing rules, exemplary:
curl-X POST http://localhost:port/services/serviceA/routes
--data"host＝example.com"
--data"path＝/newpath"；
a routing rule is defined for the service serviceA, and the host parameter of the route is set as example.
The GIS service layer 40 stores several GIS services in advance, the target GIS service is one of the GIS services, and the target GIS service obtains a target GIS service result according to the spatial range and returns the target GIS service result to the application client layer 10 through the routing component 32.
The overall architecture of a GIS service gateway platform as shown in fig. 2:
further, the intelligent gateway component layer 30 also includes a rights authentication component 33; the permission authentication component 33 is configured to verify an input user name and password before the application client layer 10 responds to the GIS service call instruction; when the user name and the password are matched, the application client layer 10 responds to a GIS service calling instruction; when the user name and the password do not match, the application client layer 10 does not respond to the GIS service call instruction.
Specifically, the application client 10 receives an input user name and password, and before responding to a GIS service call instruction, sends the user name and password to the authority authentication component 33 in the intelligent gateway component layer 30, the authority authentication component 33 verifies the user name and the password, and when the user name and the password match, the application client layer 10 responds to the GIS service call instruction; when the user name and the password do not match, the application client layer 10 does not respond to the GIS service call instruction.
Exemplary:
curl-X POST http://localhost:port/services/serviceA/plugins
--data"name＝authentication"
--data"users＝user1"
--data"token＝tokencode"；
the method comprises the steps of showing that an authority authentication plug-in authentication is started for a service serviceA, and setting an accessible user as a user1, wherein an authority authorization code is a token code;
further, the intelligent gateway component layer 30 also includes an IP black-and-white list component 34; the IP black-and-white list component 34 is configured to prohibit the routing component 32 from forwarding the GIS service call request sent by the IP address in the IP black list to the corresponding GIS service.
Illustratively, the IP black-and-white list component 34 provides IP black-and-white list control functionality for GIS service access. Single, multiple, range segment IP can be supported by IP address control to inhibit access to enhance security of the service, using examples as follows:
curl-X POST http://localhost:port/services/serviceA/plugins
--data"name＝ip-limit"
--data"config.blacklist＝192.168.1.100"；
indicating that access to service serviceA is added to the IP blacklist and setting the IP blacklist to which access is prohibited to 192.168.1.100.
Further, the intelligent gateway component layer 30 also includes a real-time monitoring component 35; the real-time monitoring component 35 is configured to monitor at least one of a service status code, a service delay time, and a service connection number of the GIS service in real time.
Further, the intelligent gateway component layer 30 also includes a current limit control component 36; the current limiting control component 36 is configured to control an access time period, an access flow, and an access number of times of the application client layer 10 accessing the GIS service.
The communication network provides limited resources and may cause network paralysis when the application client layer sends a large number of requests into the network. Illustratively, the use of the flow-restricting control assembly 36 is as follows:
curl-X POST http://localhost:port/services/serviceA/plugins
--data"name＝stream-limit"
--data"config.size＝10m"
--data"config.timeduring＝09:00-18:00"
--data"config.hour＝1000"；
the flow limit control component 36 limits the application client layer 10 to flow limit control of access to the service serviceA, allowing access periods of nine to eighteen to access traffic limits of 10 megabits, with access times per hour being at most 1000.
Further, the intelligent gateway component layer 30 also includes a log analysis component 37; wherein, the log analysis component 37 is configured to record access information of the GIS service, and analyze the recorded access information.
The calling information refers to related information returned to the application client layer 10 after the GIS service responds to the GIS service calling request, and the related information comprises the called GIS service type, time delay and the like; the access information comprises access users, corresponding access time, access GIS service types and access success or failure.
Further, the space filtering component 31, the routing component 32, the authority authentication component 33, the IP black-and-white list component 34, the real-time monitoring component 35, the current limit control component 36 and the log analysis component 37 are pluggable components.
Further, the GIS service further includes a spatial data service 41, a map service 42, a spatial query service 43, and a spatial analysis service 44, wherein the spatial data service 41 provides services based on geographic information metadata, including content, quality, and description information of geographic information data; map services 42 support map services published under different platforms, including ArcGIS map services, superMap map services, geoServer map services, and standard OGC map services; the spatial query service 43 provides spatial query services of geographic information data, including spatial location query services and spatial relationship query services; the spatial analysis service 44 provides spatial analysis services of the geographic information data, including spatial statistics services, buffer analysis services, and overlay analysis services.
It should be noted that, the GIS service layer 40 mainly performs registration management on GIS service resources, and each GIS service is a resource and needs to be registered in the platform. Illustratively, one map service resource is registered:
curl-X POST http://localhost:port/services/add
--data"name＝serviceA"
--data"type＝servicetype.wms"
--data"url＝http://localhost:port/wms/test"；
the GIS service resource named serviceA is registered, the type is map service, and the URL of the service is http:// localhost: port/wms/test.
The GIS service gateway platform comprises an application client layer, a load balancing layer, an intelligent gateway component layer and a GIS service layer, wherein the application client layer is used for responding to a GIS service calling instruction to generate a GIS service calling request and sending the GIS service calling request to the load balancing layer; wherein, the GIS service call request comprises a space screening parameter; the load balancing layer receives the GIS service calling request according to a load balancing strategy and sends the GIS service calling request to the intelligent gateway component layer; the intelligent gateway component layer comprises a space screening component and a routing component, wherein the routing component is used for receiving the GIS service calling request, the space screening component is used for converting the space screening parameter into a space range, and the routing component is also used for sending the GIS service calling request carrying the space range to corresponding target GIS service in the GIS service layer; and the GIS service layer is pre-stored with a plurality of GIS services, the target GIS service is one of the GIS services, the target GIS service obtains a target GIS service result according to the space range, and the target GIS service result is returned to the application client layer through the routing component. According to the GIS service gateway platform provided by the embodiment of the invention, all requests for GIS services pass through the intelligent gateway component layer, a centralized management platform is provided for GIS service access, so that the security management and control for GIS service access can be effectively enhanced, meanwhile, space screening can be realized under a given space constraint condition, the intelligent and fine management of GIS services is realized, all components of the intelligent gateway component layer are pluggable components, the management and control requirements for service diversification are met, and the flexibility and expansibility of the platform are enhanced.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (4)
1. A GIS service gateway platform that takes into account space constraints, comprising:
the application client layer is used for responding to the GIS service calling instruction, generating a GIS service calling request and sending the GIS service calling request to the load balancing layer; wherein, the GIS service call request comprises a space screening parameter;
the load balancing layer is used for receiving the GIS service calling request according to a load balancing strategy based on the virtual server cluster and sending the GIS service calling request to the intelligent gateway component layer according to a scheduling algorithm;
the intelligent gateway component layer comprises a space screening component and a routing component, wherein the routing component is used for receiving the GIS service calling request, the space screening component is used for converting the space screening parameter into a space range, and the routing component is also used for sending the GIS service calling request carrying the space range to corresponding target GIS service in the GIS service layer; the space screening parameters are administrative area names, and the space range is a geographic range corresponding to the administrative area names;
the GIS service layer is pre-stored with a plurality of GIS services, the target GIS service is one of the GIS services, the target GIS service obtains a target GIS service result according to the space range, and the target GIS service result is returned to the application client layer through the routing component;
the intelligent gateway component layer also comprises a permission authentication component; the permission authentication component is used for checking the input user name and password before the application client layer responds to the GIS service call instruction; when the user name is matched with the password, the application client layer responds to a GIS service calling instruction; when the user name and the password are not matched, the application client layer does not respond to a GIS service calling instruction;
the intelligent gateway component layer also comprises an IP black-and-white list component; the IP black-and-white list component is used for prohibiting the routing component from forwarding the GIS service calling request sent by the IP address in the IP black list to the corresponding GIS service;
the intelligent gateway component layer also comprises a real-time monitoring component; the real-time monitoring component is used for monitoring at least one of a service status code, a service delay time and a service connection number of the GIS service in real time;
the intelligent gateway component layer also comprises a current limiting control component; the current limiting control component is used for controlling the access time period, the access flow and the access times of the application client layer to access the GIS service.
2. The GIS services gateway platform of claim 1, wherein the scheduling algorithm comprises one of the following algorithms: a first come first serve scheduling algorithm, a short job priority scheduling algorithm, a round robin algorithm and a multi-stage feedback queue algorithm.
3. The GIS services gateway platform of claim 1, wherein the intelligent gateway component layer further comprises a log analysis component; wherein,,
the log analysis component is used for recording access information of the GIS service and analyzing the access information.
4. The GIS services gateway platform of claim 1, wherein the GIS services comprise a spatial data service, a map service, a spatial query service, and a spatial analysis service, wherein the spatial data service comprises a geographic information metadata-based service, the map service comprises an ArcGIS map service, a SuperMap map service, a GeoServer map service, and a standard OGC map service, the spatial query service comprises a spatial location query service and a spatial relationship query service, and the spatial analysis service comprises a spatial statistics service, a buffer analysis service, and an overlay analysis service.
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| CN109672612A (en) * | 2018-12-13 | 2019-04-23 | 中国电子科技集团公司电子科学研究院 | API gateway system |
| CN210258062U (en) * | 2019-04-04 | 2020-04-07 | 郑州中熙能源股份有限公司 | Intelligent charging pile |
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