CN109189841B - Multi-data source access method and system - Google Patents
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Abstract
The invention provides a multi-data source access method and a system, which comprises the steps of generating an available data source list by reading a predefined configuration file; feeding back the available data source list to a front-end interface, and sending data source information and a primitive data access request selected by a user through the front-end interface to a background graphic service of an application host by adopting a message bus; and the background graphic service calls a unified service interface according to the received data source information and the primitive characteristics of the primitive data access request to acquire the data source requested to be accessed. The scheme supports transparent access of various service data from a plurality of data sources in power transaction operation, and realizes fusion display of the plurality of data sources.
Description
Technical Field
The invention belongs to the technical field of power system dispatching automation, and particularly relates to a multi-data-source access method and system.
Background
With the advance of the reformation of the electric power market, the business data in the current electric power market trading operation system are various, the structure is complex, the dimensionality is high, and various market main bodies are gradually connected into an electric power trading platform. However, a large amount of data, both structured and unstructured, is stored in the relevant databases of the current electricity market trading and is distributed among different business systems. As market bodies increase, the demands and situations of data retrieval from these databases by each business system are increasing, thereby causing difficulties in access and maintenance of the electric power market trading operation system.
In order to promote data resource sharing in a large power market environment, related applications are urgently needed, and support for multi-dimensional data access of different data sources is needed.
Disclosure of Invention
In order to meet the requirements, the invention provides a multi-data source access method and system, which are used for uniformly displaying multi-dimensional data from different data sources on a uniform electric power market transaction operation platform and transparently accessing the multi-data sources, so that the fusion display of the multi-dimensional data in an electric power market operation system is realized.
The purpose of the invention is realized by adopting the following technical scheme:
a multiple data source access method, the method comprising:
generating an available data source list by reading a predefined configuration file;
feeding back the available data source list to a front-end interface, and sending data source information and a primitive data access request selected by a user through the front-end interface to a background graphic service of an application host by adopting a message bus;
and the background graphic service calls a unified service interface according to the received data source information and the primitive characteristics of the primitive data access request to acquire the data source requested to be accessed.
Preferably, the reading the predefined configuration file includes:
registering a background graph access service on a message bus, and establishing connection with a front-end client;
searching a configuration file path related to a data source;
and finishing reading the predefined configuration file according to the configuration file path.
Preferably, the generating the available data source list by reading the predefined configuration file includes:
the background graph access service loads access dynamic libraries corresponding to a plurality of data sources according to a predefined configuration file, decouples the loaded data sources and the access dynamic libraries corresponding to the data sources, and generates an available data source list.
Further, after the generating the available data source list, the method further includes: performing plug-in management on a plurality of data sources, comprising:
adopting a predefined plug-in management module to call a data fetching interface of a plug-in to fetch the data of a data source corresponding to a data fetching dynamic library;
the background graphic service of the application host calls the plug-in unit to read and return data according to the data source information selected by the front-end interface;
and viewing the relevant information of the plug-in.
Preferably, the invoking the unified service interface, and acquiring the data source requesting the access includes:
the background graphics service matches a corresponding data source according to the received data source information, and calls a uniform service interface provided by an access dynamic library corresponding to the data source to read the data source according to the primitive data type of the primitive data access request to obtain primitive data; and processing the primitive data into a unified normalized interactive text, and returning the unified normalized interactive text to the front-end interface.
Further, the primitive data types include a relational type, a tag type, and a general query string type.
Preferably, the background graphic service is deployed on the application host in a master-standby mode, and a local interface is adopted to read data.
Preferably, the processing the primitive data into the unified normalized interactive text includes:
and processing the graph metadata according to the data format of the pre-defined graph element interaction format template file to generate a unified normalized interaction text which is consistent with the data format of the pre-defined graph element interaction format template file.
Further, the predefined interactive format template file is determined according to the primitive features of the primitive data; wherein the content of the first and second substances,
the primitive features include: dynamic data, pie charts, curves, lists, and dynamic trees.
Further, the message bus comprises a RabbitMQ bus.
A multiple data source access system, comprising:
the generating module is used for generating an available data source list by reading a predefined configuration file;
the sending module is used for feeding back the available data source list to a front-end interface and sending data source information and a primitive data access request selected by a user through the front-end interface to background graphic service of an application host by adopting a message bus;
and the access module is used for calling the uniform service interface by the background graphic service according to the received data source information and the primitive characteristics of the primitive data access request, and acquiring the data source requested to be accessed.
Preferably, the generating module includes:
the preprocessing unit is used for registering a background graph access service on a message bus and establishing connection with a front-end client;
the preview unit is used for searching a configuration file path related to the data source;
the reading unit is used for finishing reading the predefined configuration file according to the configuration file path;
the loading unit is used for loading the access dynamic libraries corresponding to the plurality of data sources by the background graphic access service according to the predefined configuration file;
the decoupling unit is used for decoupling the loaded data sources and the corresponding access dynamic libraries thereof to generate an available data source list;
and the management unit is used for performing plug-in management on the plurality of data sources after generating the available data source list.
Further, the management unit includes:
the access subunit is used for calling an access interface of the plug-in by adopting a predefined plug-in management module to access the access dynamic library corresponding to the data source;
the plug-in calling subunit, which is used for calling the plug-in for reading and returning data according to the data source information selected by the front-end interface in the background graphic service of the application host;
and the query subunit is used for viewing the relevant information of the plug-in.
Preferably, the access module includes:
the matching unit is used for matching the corresponding data source by the background graphic service according to the received data source information;
the primitive data acquisition unit is used for calling a uniform service interface provided by the access dynamic library corresponding to the data source to read the data source according to the primitive data type of the primitive data access request to acquire primitive data;
and the editing unit is used for processing the primitive data into a unified normalized interactive text and returning the unified normalized interactive text to the front-end interface.
Further, the editing unit includes: and the processing unit is used for processing the image element data according to the data format of the predefined image element interaction format template file and generating a unified normalized interaction text which is consistent with the data format of the predefined image element interaction format template file.
Compared with the closest prior art, the invention has the following beneficial effects:
the invention provides a multi-data source access method and a system, wherein an available data source list is generated by reading a predefined configuration file; feeding back an available data source list to a front-end interface, and sending data source information and a primitive data access request selected by a user through the front-end interface to a background graphic service of an application host by adopting a message bus; the background graphic service calls a unified service interface according to the received data source information and the primitive characteristics of the primitive data access request to acquire a data source requesting access; therefore, a set of back-end graph access service is formulated to receive the front-end request, the front-end request is processed according to needs, the processing flow returned by the standard is unified, the multiple data sources are flexibly and dynamically switched to be accessed, the background access and the data storage are completely decoupled, and the transparent access of the picture to the multiple data sources is realized.
By means of the scheme, the service data from different data sources are displayed on the same picture at the same time, fusion display of multiple data sources is achieved, increasing and variable service requirements brought by market change are effectively met, the technical level and the supporting capacity of the electric power market trading operation system are improved, and the market service level of a trading center can be effectively improved.
Drawings
FIG. 1 is a general flowchart of a multiple data source access method according to an embodiment;
fig. 2 is a block diagram of a flow of a method for accessing multiple data sources according to an embodiment.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
With the advance of the electric power market reform, various market main bodies are gradually connected to a trading platform, and different kinds of service data from different systems need to be uniformly displayed in a configuration graph in the trading platform. The configuration graph is divided into a front end, namely a client side, and a back end, namely a graph service. One picture of the front end simultaneously displays service data from different data sources, the back end can request the service data to be classified according to the picture of the front end, relevant data are respectively obtained from different data sources, the relevant data are uniformly returned to the picture of the front end after uniform processing, the service data from different data sources are simultaneously displayed on the same picture, and fusion display of multiple data sources is achieved.
In order to meet the technical requirements, the invention provides a multi-data-source access method and system, which can realize multi-data-source transparent access in a power transaction operation system based on multi-dimensional data.
The multiple data source access method proposed by combining fig. 1 and fig. 2 can be implemented in independently developed configuration graphics software and applied to an electric power transaction operation system, and the specific implementation method includes:
s1 generating a list of available data sources by reading a predefined configuration file;
s2, feeding back the available data source list to a front-end interface, and sending data source information and a primitive data access request selected by a user through the front-end interface to a background graphic service of an application host by adopting a message bus;
and S3, the background graphic service calls the uniform service interface according to the received data source information and the primitive characteristics of the primitive data access request, and acquires the data source requested to be accessed.
As shown in fig. two, in step S1, reading the predefined configuration file includes:
a, registering a background graph access service on a message bus, and establishing connection with a front-end client; the message bus is provided with a target RabbitMQ node, and when the target RabbitMQ node is determined, the access request is transmitted to the matched cloud OS functional module;
b, searching a configuration file path related to the data source;
and c, finishing reading the predefined configuration file according to the path of the configuration file.
The method comprises the steps of registering a back-end graph access service on a RabbitMQ bus through configuration parameters and configuration files, creating respective objects for a plurality of data sources to be accessed, dynamically loading an access dynamic library corresponding to each data source, decoupling access from specific data sources, implementing plug-in management on the plurality of data sources, and performing access operation according to a selected data source in a received front-end request to realize reading as required.
The step S1 of generating the available data source list by reading the predefined configuration file includes:
the background graph access service loads access dynamic libraries corresponding to a plurality of data sources according to a predefined configuration file, decouples the loaded data sources and the access dynamic libraries corresponding to the data sources, and generates an available data source list.
After the generation of the available data source list, the method further comprises the following steps: performing plug-in management on a plurality of data sources:
adopting a predefined plug-in management module to call a data fetching interface of a plug-in to fetch the data of a data source corresponding to a data fetching dynamic library;
the background graphic service of the application host calls the plug-in unit to read and return data according to the data source information selected by the front-end interface;
and viewing the relevant information of the plug-in.
And step S2, feeding back the available data source list to the front-end interface, and sending the data source information and the primitive data access request selected by the user through the front-end interface to the background graphics service of the application host by using a message bus.
The mentioned message bus comprises the RabbitMQ bus. The RabbitMQ is a distributed message queue, through a RabbitMQ server, a message sender does not need to know the address of a message receiver, but only needs to know the address of the server of the RabbitMQ to send the message, and through a message routing mechanism of the RabbitMQ, the message receiver can accurately receive the message of the message sender.
In step S3, the unified service interface is called, and the obtaining of the data source requested to be accessed includes:
the background graphics service matches a corresponding data source according to the received data source information, and calls a uniform service interface provided by an access dynamic library corresponding to the data source to read the data source according to the primitive data type of a primitive data access request to obtain primitive data; processing the graph metadata into a unified normalized interactive text, and returning the unified normalized interactive text to the front-end interface; the difference of multiple data sources is shielded, and transparent access of the screen to the multiple data sources is realized.
The primitive data types comprise a relational type, a label type and a universal query string type.
In order to fully improve the efficiency of the back-end graph access service, the deployment of the background graph adopts a main-standby mode, the background graph is deployed on the application host together, the background server adopts the main-standby mode to be deployed on the application host, and a local interface is adopted to read data. And all the called data service interfaces are local interfaces, so that the network overhead is reduced as much as possible, and the data access performance is improved.
Further, the processing of the graph metadata into the unified normalized interactive text in step S3 includes:
and processing the graph metadata according to the data format of the pre-defined graph element interaction format template file to generate a unified normalized interaction text which is consistent with the data format of the pre-defined graph element interaction format template file.
The method comprises the following steps that a predefined interactive format template file is determined according to primitive features of primitive data; the primitive features include: dynamic data, pie charts, curves, lists, and dynamic trees.
Registering a back-end service at the RabbitMQ, and acquiring an available data source list from a configuration file; dynamically loading a relevant dynamic library according to data source information in the front-end picture request; calling different interfaces to dynamically process request data according to the characteristics of the request service data to perform access operation; and returning the returned data to the front-end picture request by using the graphic element normalized text after uniform processing. Transparent access is provided for various service data from a plurality of data sources in power transaction operation, and fusion display of the plurality of data sources is realized.
Based on the same inventive concept, the application also provides a multi-data source access system, which comprises:
the generating module is used for generating an available data source list by reading a predefined configuration file;
the sending module is used for feeding back the available data source list to a front-end interface and sending data source information and a primitive data access request selected by a user through the front-end interface to background graphic service of an application host by adopting a message bus;
and the access module is used for calling the uniform service interface by the background graphic service according to the received data source information and the primitive characteristics of the primitive data access request, and acquiring the data source requested to be accessed.
Wherein, the generation module includes:
the preprocessing unit is used for registering a background graph access service on a message bus and establishing connection with a front-end client;
the preview unit is used for searching a configuration file path related to the data source;
the reading unit is used for finishing reading the predefined configuration file according to the configuration file path;
the loading unit is used for loading the access dynamic libraries corresponding to the plurality of data sources by the background graphic access service according to the predefined configuration file;
the decoupling unit is used for decoupling the loaded data sources and the corresponding access dynamic libraries thereof to generate an available data source list;
and the management unit is used for performing plug-in management on the plurality of data sources after generating the available data source list.
The management unit includes: the access subunit is used for calling an access interface of the plug-in by adopting a predefined plug-in management module to access the access dynamic library corresponding to the data source;
the plug-in calling subunit, which is used for calling the plug-in for reading and returning data according to the data source information selected by the front-end interface in the background graphic service of the application host;
and the query subunit is used for viewing the relevant information of the plug-in.
The access module includes:
the matching unit is used for matching the corresponding data source by the background graphic service according to the received data source information;
the primitive data acquisition unit is used for calling a uniform service interface provided by the access dynamic library corresponding to the data source to read the data source according to the primitive data type of the primitive data access request to acquire primitive data;
and the editing unit is used for processing the primitive data into a unified normalized interactive text and returning the unified normalized interactive text to the front-end interface. The editing unit includes: and the processing unit is used for processing the image element data according to the data format of the predefined image element interaction format template file and generating a unified normalized interaction text which is consistent with the data format of the predefined image element interaction format template file.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application and not for limiting the protection scope thereof, and although the present application is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: numerous variations, modifications, and equivalents will occur to those skilled in the art upon reading the present application and are within the scope of the claims appended hereto.
Claims (5)
1. A method for multiple data source access, the method comprising:
generating an available data source list by reading a predefined configuration file;
feeding back the available data source list to a front-end interface, and sending data source information and a primitive data access request selected by a user through the front-end interface to a background graphic service of an application host by adopting a message bus;
the background graphic service calls a unified service interface according to the received data source information and the primitive characteristics of the primitive data access request to acquire a data source requesting access;
the reading of the predefined configuration file comprises:
registering a background graph access service on a message bus, and establishing connection with a front-end client;
searching a configuration file path related to a data source;
completing reading of a predefined configuration file according to the configuration file path;
the generating of the available data source list by reading the predefined configuration file comprises:
the background graph access service loads access dynamic libraries corresponding to a plurality of data sources according to a predefined configuration file, decouples the loaded data sources and the access dynamic libraries corresponding to the data sources, and generates an available data source list;
the generating of the available data source list further comprises: performing plug-in management on a plurality of data sources, comprising:
adopting a predefined plug-in management module to call a data fetching interface of a plug-in to fetch the data of a data source corresponding to a data fetching dynamic library;
the background graphic service of the application host calls the plug-in unit to read and return data according to the data source information selected by the front-end interface;
viewing the relevant information of the plug-in;
the calling of the unified service interface and the obtaining of the data source requesting access comprise:
the background graphics service matches a corresponding data source according to the received data source information, and calls a uniform service interface provided by an access dynamic library corresponding to the data source to read the data source according to the primitive data type of the primitive data access request to obtain primitive data; processing the primitive data into a unified normalized interactive text, and returning the unified normalized interactive text to the front-end interface;
the primitive data types comprise a relational type, a label type and a general query string type;
the background graphic service is deployed on the application host in a main and standby mode, and a local interface is adopted to read data;
the processing the primitive data into a unified normalized interactive text comprises:
processing the graph metadata according to a data format of a pre-defined graph element interaction format template file to generate a unified normalized interaction text which is consistent with the data format of the pre-defined graph element interaction format template file;
the predefined interactive format template file is determined according to the primitive characteristics of the primitive data; wherein the content of the first and second substances,
the primitive features include: dynamic data, pie charts, curves, lists, and dynamic trees;
the message bus comprises a RabbitMQ bus.
2. The multiple data source access system for the multiple data source access method of claim 1, comprising:
the generating module is used for generating an available data source list by reading a predefined configuration file;
the sending module is used for feeding back the available data source list to a front-end interface and sending data source information and a primitive data access request selected by a user through the front-end interface to background graphic service of an application host by adopting a message bus;
the access module is used for calling a uniform service interface by the background graphic service according to the received data source information and the primitive characteristics of the primitive data access request to acquire a data source requesting to access;
the generation module comprises:
the preprocessing unit is used for registering a background graph access service on a message bus and establishing connection with a front-end client;
the preview unit is used for searching a configuration file path related to the data source;
the reading unit is used for finishing reading the predefined configuration file according to the configuration file path;
the loading unit is used for loading the access dynamic libraries corresponding to the plurality of data sources by the background graphic access service according to the predefined configuration file;
the decoupling unit is used for decoupling the loaded data sources and the corresponding access dynamic libraries thereof to generate an available data source list;
and the management unit is used for performing plug-in management on the plurality of data sources after generating the available data source list.
3. The system of claim 2, wherein the management unit comprises:
the access subunit is used for calling an access interface of the plug-in by adopting a predefined plug-in management module to access the access dynamic library corresponding to the data source;
the plug-in calling subunit is used for calling the plug-in by the background graphic service of the application host according to the data source information selected by the front-end interface to read and return data;
and the query subunit is used for viewing the relevant information of the plug-in.
4. The system of claim 2, wherein the access module comprises:
the matching unit is used for matching the corresponding data source by the background graphic service according to the received data source information;
the primitive data acquisition unit is used for calling a uniform service interface provided by the access dynamic library corresponding to the data source to read the data source according to the primitive data type of the primitive data access request to acquire primitive data;
and the editing unit is used for processing the primitive data into a unified normalized interactive text and returning the unified normalized interactive text to the front-end interface.
5. The system of claim 4, wherein the editing unit comprises: and the processing unit is used for processing the image element data according to the data format of the predefined image element interaction format template file and generating a unified normalized interaction text which is consistent with the data format of the predefined image element interaction format template file.
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| CN110321375A (en) * | 2019-03-11 | 2019-10-11 | 浙江中控软件技术有限公司 | A kind of data communication system and method that multi-data source is integrated |
| CN112069148A (en) * | 2019-06-10 | 2020-12-11 | 贵阳海信网络科技有限公司 | Scenic spot data access method and device |
| CN110544092B (en) * | 2019-08-22 | 2022-04-01 | 杭州趣链科技有限公司 | Dynamic newly-added multi-type database data operation chaining method for block chain |
| CN111563248B (en) * | 2020-04-20 | 2024-03-08 | 北京智芯微电子科技有限公司 | Secure chip access system |
| CN111611936B (en) * | 2020-05-22 | 2021-05-14 | 青矩技术股份有限公司 | Automatic identification system for similar vector diagrams in CAD drawings |
| CN111767330B (en) * | 2020-06-12 | 2022-02-25 | 杭州数梦工场科技有限公司 | Data interaction method and device, electronic equipment and storage medium |
| CN112148745B (en) * | 2020-08-07 | 2022-05-27 | 新华三大数据技术有限公司 | Multi-HBase cluster access method, device and storage medium |
| CN112000694B (en) * | 2020-09-11 | 2024-04-26 | 支付宝(杭州)信息技术有限公司 | Data acquisition method, device, equipment and medium |
| CN112270003B (en) * | 2020-10-27 | 2023-05-02 | 上海淇馥信息技术有限公司 | Multi-service dynamic data source configuration method, platform and electronic equipment |
| CN113010591B (en) * | 2021-03-22 | 2024-04-19 | 薪得付信息技术(上海)有限公司 | Report generation method, device and system based on application interface |
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