CN112486649A - GIS service gateway platform considering space constraint - Google Patents
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Abstract
The invention discloses a GIS service gateway platform, 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; the load balancing layer sends the data to the intelligent gateway component layer; the GIS service calling request comprises space screening parameters; the intelligent gateway component layer comprises a space screening component and a routing component, the routing component receives the GIS service calling request, the space screening component converts space screening parameters into a space range, and the routing component also sends the GIS service calling request carrying the space range to a corresponding target GIS service in the GIS service layer; and the GIS service layer is prestored with a plurality of GIS services, the target GIS service is one of the GIS services, and the target GIS service acquires a target GIS service result according to the spatial range and returns the target GIS service result to the application client layer. By adopting the embodiment of the invention, the space screening can be realized, a GIS service access management platform is provided, and the security control of GIS service access is enhanced.
Description
Technical Field
The invention relates to the technical field of geographic information services, in particular to a GIS service gateway platform considering space constraints.
Background
In recent years, with the development of internet geographic information technology, 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, the service mode has the characteristics of diversification and heterogeneity, such as map services, spatial analysis services and the like, meanwhile, the geographic information services have higher requirements on safety, how to guarantee the safety in the geographic information service opening process is ensured, a uniform access management entrance is provided for multisource heterogeneous GIS services, and the use efficiency of the GIS services is more important to improve.
The gateway is used as an important platform in a front-end and back-end separation architecture of a large-scale internet application, carries important data input and output work, has the core effect of routing and data forwarding of services, is the only data inlet and outlet 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 research of applying the gateway to the GIS service management is less, the existing research uses a reverse proxy server to simply forward a GIS service call request, the access of the GIS service is not uniformly managed, the safety is poor, the space screening of the GIS service is not considered, and the complex GIS service application scene is difficult to meet.
Disclosure of Invention
The embodiment of the invention aims to provide a GIS service gateway platform considering space constraint, which can realize space screening on GIS service under the given space constraint condition, realize intelligent and fine management of the GIS service, provide a management platform for access of the GIS service and effectively enhance security control on GIS service access.
In order to achieve the above object, an embodiment of the present invention provides a GIS service gateway platform considering space constraints, including:
the application client layer is used for responding to a GIS service calling instruction, generating a GIS service calling request and sending the GIS service calling request to the load balancing layer; the GIS service calling request comprises space screening parameters; the spatial screening parameter is an administrative area name, and the spatial range is a geographic range corresponding to the administrative area name;
the load balancing layer is used for receiving the GIS service calling request according to a load balancing strategy based on a 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 parameters into a space range, and the routing component is also used for sending the GIS service calling request carrying the space range to a corresponding target GIS service in the GIS service layer;
and the GIS service layer is prestored with a plurality of GIS services, the target GIS service is one of the GIS services, and the target GIS service acquires a target GIS service result according to the space range and returns the target GIS service result 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 an authority authentication component; the authority authentication component is used for verifying the input user name and password before the application client layer responds to the GIS service calling 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 a 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; and the IP black and white list component is used for forbidding the routing component to forward 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 state code, service delay time and service connection number of the GIS service in real time.
As an improvement of the above scheme, the intelligent gateway component layer further comprises a flow limiting control component; the flow limiting control component is used for controlling the access time period, the access flow and the access times of the GIS service accessed by the application client layer.
As an improvement of the above scheme, the intelligent gateway component layer further comprises 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:
the system comprises 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 issued under different platforms, including ArcGIS map service, SuperMap map service, GeoServer map service and standard OGC map service; the space query service provides space query service of geographic information data, and comprises space positioning query service and space relation query service; the spatial analysis service provides spatial analysis services of geographic information data, and the spatial analysis services comprise spatial statistics service, buffer area analysis service and superposition analysis service.
Compared with the prior art, the GIS service gateway platform considering the space constraint 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 parameters into a space range, and the routing component is also used for sending the GIS service calling request carrying the space range to a corresponding target GIS service in the GIS service layer; and the GIS service layer is prestored with a plurality of GIS services, the target GIS service is one of the GIS services, and the target GIS service acquires a target GIS service result according to the space range and returns the target GIS service result 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 service are forwarded through the intelligent gateway component layer, so that a centralized management platform is provided for the access of the GIS service, and the security control on the access of the GIS service can be effectively enhanced; meanwhile, space screening can be realized under the given space constraint condition, and intelligent and fine management of GIS service is realized; in addition, all the components of the intelligent gateway component layer are pluggable components, so that the flexibility and the expansibility of the platform are enhanced.
Drawings
Fig. 1 is a schematic structural diagram of a GIS service gateway platform considering space constraints according to an embodiment of the present invention;
FIG. 2 is a diagram of the overall architecture of a GIS service gateway platform in consideration of space constraints, provided by an embodiment of the present invention;
fig. 3 is a diagram of the physical architecture of a GIS service gateway platform in consideration of space constraints according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a GIS service gateway platform considering space constraints according to an embodiment of the present invention; the GIS service gateway platform comprises:
the application client layer 10 is used for responding to a GIS service calling instruction, generating a GIS service calling request and sending the GIS service calling request to the load balancing layer 20; the GIS service calling request comprises space screening parameters;
optionally, the application client layer 10 is a web client, or alternatively, the application client layer 10 is an application client. Illustratively, the application client layer 10 accesses the GIS service resources registered to the platform through a standard HTTP request protocol without considering the specific protocol used in the service internal implementation and without knowing the internal composition of the service when reconstructing the service.
The load balancing layer 20 is configured to receive the GIS service invocation request according to a load balancing policy based on a virtual server cluster, and send the GIS service invocation request to the intelligent gateway component layer 30 according to a scheduling algorithm;
for example, as shown in fig. 3, in a physical architecture of a GIS service gateway platform considering space constraints, a load balancing layer receives a request from an application client layer, and reasonably distributes a GIS service invocation request to a plurality of gateway server nodes, so as to improve service response performance and platform availability and ensure service continuity; the load balancing layer shown in fig. 3 adopts a load balancing high-availability scheme of an LVS + KeepAlived mode, the LVS is a shorthand for a Linux Virtual Server, i.e. a Linux Virtual Server, is a Virtual Server cluster system, is mainly responsible for forwarding service requests, has a high load-resistant performance, and adopts a dual-Server hot-standby scheme of one host and one standby, and forwards each GIS service call request to a gateway Server node of the next layer by using a service scheduling algorithm provided by the LVS. In order to ensure the high availability of the load cluster, whether any LVS node works normally needs to be detected, KeepAlived is a health check tool specially provided for LVS, two functions are mainly provided, node health state check and fault automatic switching are realized, and when a node fault is detected, a request can be automatically transferred to a normal working node; it is worth noting that the GIS service layer in fig. 3 includes a plurality of GIS servers, which provide GIS services;
optionally, 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. 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 again.
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 calling request, the space screening component 31 is used for converting the space screening parameters into a space range, and the routing component 32 is also used for sending the GIS service calling 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;
illustratively, for a user at a city level, when a GIS service is accessed, screening is performed according to a spatial range at the city level, and a response result of the service is limited in the spatial range at the city level:
curl-X POST http://localhost:port/services/serviceA/plugins
--data"name＝spatial-limit"
-data "config.spatial.city, guangzhou city";
the method comprises the steps of starting a spatial screening component for a service serviceA, and setting the spatial range of the service to be within the geographic range corresponding to the Guangzhou municipal administrative district.
It should be noted that the curl is a command line tool using URL syntax, supports HTTP protocol, and is used to request the Web server to implement corresponding operations, where-X POST indicates setting HTTP request mode to POST, and-data indicates key value pairs of additional parameters, 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, each GIS service invocation request matching a given route will be submitted to a corresponding GIS service, forwarding is achieved through a combination of services and routing rules, exemplary:
curl-X POST http://localhost:port/services/serviceA/routes
--data"host＝example.com"
--data"path＝/newpath"；
the method comprises the steps of defining a routing rule for a service serviceA, setting a host parameter of a route to be example.
And the GIS service layer 40 is pre-stored with a plurality of GIS services, the target GIS service is one of the GIS services, and the target GIS service acquires a target GIS service result according to the space range and returns the target GIS service result to the application client layer 10 through the routing component 32.
The general architecture of a GIS service gateway platform as shown in fig. 2:
further, the intelligent gateway component layer 30 also includes an authority authentication component 33; wherein, the authority authentication component 33 is configured to verify the input user name and password before the application client layer 10 responds to the GIS service invocation instruction; when the user name and the password are matched, the application client layer 10 responds to a GIS service calling instruction; when the username and password do not match, the application client layer 10 does not respond to GIS service invocation instructions.
Specifically, the application client 10 receives an input user name and password, before responding to the 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 are matched, the application client layer 10 responds to the GIS service call instruction; when the username and password do not match, the application client layer 10 does not respond to GIS service invocation instructions.
The following are exemplary:
curl-X POST http://localhost:port/services/serviceA/plugins
--data"name＝authentication"
--data"users＝user1"
--data"token＝tokencode"；
the authorization authentication plugin authentication is started for the service serviceA, the accessible user is set to be the user1, and the authorization code is the token;
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 invocation request sent by the IP address in the IP black list to the corresponding GIS service.
Illustratively, the IP blacklist component 34 provides IP blacklist control functionality for GIS service access. Single, multiple, range-segmented IP can be supported by controlling the barring of access by IP addresses to enhance the security of services, using the following examples:
curl-X POST http://localhost:port/services/serviceA/plugins
--data"name＝ip-limit"
--data"config.blacklist＝192.168.1.100"；
indicating that access to the service serviceA is added to the IP blacklist and setting the IP blacklist for which access is prohibited to 192.168.1.100.
Further, the intelligent gateway component layer 30 further 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 number of service connections of the GIS service in real time.
Further, intelligent gateway component layer 30 also includes a flow limiting control component 36; the current limiting control component 36 is configured to control an access time period, an access flow, and an access frequency of the application client layer 10 accessing the GIS service.
Communication networks provide limited resources that can lead to network collapse when the application client layer sends a large number of requests into the network. Illustratively, the use of flow limiting 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 limiting control component 36 limits the access of the application client layer 10 to the service serviceA to perform flow limiting control, and allows the access time period to be nine o 'clock to eighteen o' clock, the access flow is limited to 10 million, and the access times per hour are at most 1000.
Further, the intelligent gateway component layer 30 also includes a log analysis component 37; wherein, the log analyzing component 37 is configured to record access information of the GIS service, and analyze the recorded access information.
The calling information refers to relevant information returned to the application client layer 10 by the GIS service after responding to the GIS service calling request, and includes the type of the called GIS service, time delay and the like; the access information comprises an access user and corresponding access time, an accessed GIS service type and access success or failure.
Further, the space screening 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 all 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; the map service 42 supports map services published under different platforms, including ArcGIS map service, SuperMap map service, GeoServer map service, and standard OGC map service; the spatial query service 43 provides spatial query services of geographic information data, including a spatial positioning query service and a spatial relationship query service; the spatial analysis service 44 provides spatial analysis services of 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, registering a map service resource:
curl-X POST http://localhost:port/services/add
--data"name＝serviceA"
--data"type＝servicetype.wms"
--data"url＝http://localhost:port/wms/test"；
the method indicates that a GIS service resource named as serviceA is registered, the type is a map service, and the URL of the service is http:// localhost: port/wms/test.
The GIS service gateway platform provided by the embodiment of the invention comprises an application client layer, a load balancing layer, an intelligent gateway component layer and a GIS service layer, wherein the application client layer responds to a GIS service calling instruction to generate a GIS service calling request and sends the GIS service calling request to the load balancing layer; the GIS service calling request comprises space screening parameters; 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 parameters into a space range, and the routing component is also used for sending the GIS service calling request carrying the space range to a corresponding target GIS service in the GIS service layer; and the GIS service layer is prestored with a plurality of GIS services, the target GIS service is one of the GIS services, and the target GIS service acquires a target GIS service result according to the space range and returns the target GIS service result 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 service pass through the intelligent gateway component layer, a centralized management platform is provided for the access of the GIS service, the security control on the access of the GIS service can be effectively enhanced, meanwhile, the space screening can be realized under the given space constraint condition, the intelligent and fine management of the GIS service is realized, all components of the intelligent gateway component layer are pluggable components, the control requirement on the service diversification is met, and the flexibility and the expansibility of the platform are enhanced.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (8)
1. A GIS service gateway platform that accounts for space constraints, comprising:
the application client layer is used for responding to a GIS service calling instruction, generating a GIS service calling request and sending the GIS service calling request to the load balancing layer; the GIS service calling request comprises space screening parameters;
the load balancing layer is used for receiving the GIS service calling request according to a load balancing strategy based on a 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 parameters into a space range, and the routing component is also used for sending the GIS service calling request carrying the space range to a corresponding target GIS service in the GIS service layer; the spatial screening parameter is an administrative area name, and the spatial range is a geographic range corresponding to the administrative area name;
and the GIS service layer is prestored with a plurality of GIS services, the target GIS service is one of the GIS services, and the target GIS service acquires a target GIS service result according to the space range and returns the target GIS service result to the application client layer through the routing component.
2. The GIS service gateway platform taking into account spatial constraints 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 service gateway platform accounting for space constraints of claim 1 wherein the intelligent gateway component layer further comprises an authority authentication component; wherein,
the authority authentication component is used for verifying the input user name and password before the application client layer responds to the GIS service calling 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 a GIS service calling instruction.
4. The GIS services gateway platform taking into account spatial constraints of claim 1 wherein the intelligent gateway component layer further comprises an IP black and white list component; wherein,
and the IP black and white list component is used for forbidding the routing component to forward the GIS service calling request sent by the IP address in the IP black list to the corresponding GIS service.
5. The GIS service gateway platform accounting for space constraints of claim 1 wherein the intelligent gateway component layer further comprises a real-time monitoring component; wherein,
the real-time monitoring component is used for monitoring at least one of the service state code, the service delay time and the service connection number of the GIS service in real time.
6. The GIS service gateway platform accounting for space constraints of claim 1 wherein the intelligent gateway component layer further comprises a flow limiting control component; wherein,
and the flow limiting control component is used for controlling the access time period, the access flow and the access times of the GIS service accessed by the application client layer.
7. The GIS service gateway platform accounting for space constraints of claim 1 wherein the intelligent gateway component layer further comprises a log analysis component; wherein,
and the log analysis component is used for recording the access information of the GIS service and analyzing the access information.
8. The space constraint aware GIS service gateway platform of claim 1, wherein the GIS services comprise spatial data services, map services, spatial query services, and spatial analysis services, wherein the spatial data services comprise geographic information metadata based services, the map services comprise ArcGIS map services, SuperMap map services, GeoServer map services, and standard OGC map services, the spatial query services comprise spatial location query services and spatial relationship query services, and the spatial analysis services comprise spatial statistics services, buffer analysis services, and overlay analysis services.
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| CN103279526A (en) * | 2013-05-30 | 2013-09-04 | 中国科学院国家天文台 | WebGIS three-dimensional lunar system based on ActiveX and realizing method of WebGIS three-dimensional lunar system |
| CN105022770A (en) * | 2015-01-07 | 2015-11-04 | 泰华智慧产业集团股份有限公司 | Geocoding method and geocoding system based on smart city |
| 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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