CN101206568B - Gridding application program interface system based on Web - Google Patents

Gridding application program interface system based on Web Download PDF

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CN101206568B
CN101206568B CN2007101686827A CN200710168682A CN101206568B CN 101206568 B CN101206568 B CN 101206568B CN 2007101686827 A CN2007101686827 A CN 2007101686827A CN 200710168682 A CN200710168682 A CN 200710168682A CN 101206568 B CN101206568 B CN 101206568B
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interface
module
data
grid
parameter
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CN101206568A (en
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金海�
陈召
吴松
齐力
石宣化
罗雅琴
曾纯强
范珂
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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Abstract

The invention discloses a web-based grid application programming interface system, which adopts a three-tire structure of a grid platform adapter module, an interface engine module and an interface functional module to realize effective separation of bottom grid platforms and a top application interface. The grid platform adapter module can mark the heterogeneity among the bottom grid platforms. The interface engine module provides a top grid application programming interface with a uniform and simple grid environment. The interface functional module provides a grid programmer with a grid application program interface which is extensible and self-defined and can create grid applications on the web conveniently. The interface realizes automatic generation of an application program call interface through a web display module and well supports the expansion of an interface repository through a self-defined interface module, thereby greatly lowering the threshold for writing a web based grid application program.

Description

A kind of gridding application program interface system based on Web
Technical field
The invention belongs to computer application field, be specifically related to the application program interface system of a kind of exploitation based on the grid application of Web.
Background technology
Along with Development of Grid Technology and universal, enterprise uses and becomes increasingly complex, and correspondingly, the application programs design has proposed more and more higher requirement.But those use the Application of Grid Computation program to be programmed according to the semantics of grid.Therefore, the program application can require an additional programming model that a series of application programming interface must be provided simultaneously.Like this, along with calling of grid interface, it is more and more huger and at random that code becomes.The raising of gridding application program programming threshold has restricted the popularization of gridding technique greatly.
At gridding application program threshold problem of higher, a lot of enterprises and academic institution have released a series of gridding application program DLL (dynamic link library), mainly comprise following several:
1) CoG kit: grid computing environment provides a new field to the developer, grid exploitation is considered focuses on problems such as performance end to end, advanced network service support, dynamic self-adapting, but in present commercial application and development, the main problem of considering is the commercial extensibility of using, based on the encapsulation of assembly, based on the expression of desktop etc.This makes the basic development technique of grid computing and means and the common technology based on commercial Distributed Calculation inconsistent.The foundation of U.S. CommodityGrid project exactly in order to set up a bridge between the two, is that the developer sets up various grid application with comparalive ease.Commodity Grid project has mainly been released Commodity Grid assembly, it has defined between grid and the practical commercial framework one mapping and interface, the multilingual support is provided, and define and realized having made things convenient for grid application developer's development to a great extent by a series of standard member.
2) GAT:GAT is general, the application program interface system flexibly that a kind of usefulness visits mesh services, and these mesh services can realize from general purpose application program code, door, data management system and by the work that instrument provided of GridLab project exploitation.GAT is designed to the style of modularization plug and play, so no matter wherein the instrument of exploitation can insert among the GAT.
3) simple gridding application program interface: simple gridding application program interface is to provide convenience for the gridding application program personnel of writing, the same like message passing interface to the concurrent program author, it has solved the present situation that various gridding application program interfaces are done things in his own way, but by taking out the common feature of various grid platforms, write one and overlapped the gridding application program interface that is applicable to various grid platforms, it has shielded bottom grid heterogeneous structure of platform type and complicacy.
These gridding application program DLL (dynamic link library) have encapsulated the semanteme of part grid bottom, and therefore abstract some common feature of grid application have reduced the difficulty of writing of gridding application program to a certain extent.But there is following shortcoming:
1) though some unified DLL (dynamic link library) are provided, writing of gridding application program still is very relevant with the semanteme of grid, only understands that the people of grid bottom could enjoy the convenience that grid brings.
2) can easily not develop grid application, also must create grid application by portal technology based on Web based on Web.
Summary of the invention
The objective of the invention is to the programmer be required too high problem at what exist in the gridding application program compiling procedure, and the exploitation based on the grid application of Web in inconvenience, a kind of application program interface system that is used to create based on the gridding application program of Web is provided.The present invention has the infrastructure component of structure based on the grid application of Web, and the User Defined interface function is provided simultaneously, possesses very strong extendability.
Gridding application program interface system based on Web provided by the invention is characterized in that: this system comprises grid platform adaptation module, interface engine module and the functional module interface that is positioned at server;
The grid platform adaptation module is used to finish Data Format Transform between isomery lattice platform and the high-level interface engine modules;
Interface engine module connecting interface functional module and grid platform adaptation module provide basic grid programmed environment to last layer gridding application program DLL (dynamic link library);
Functional module interface is externally finished unified interface definition, and the task of calling this interface is resolved, and generate the docking port engine modules and call, and the task call result that returns of receiving interface engine modules.
The present invention uses grid platform adaptation module shielding isomery lattice platform, adopt the interface engine module to connect grid platform adaptation module and high-level interface functional module, provide the interface of calling of interface to generate, call processing, return results demonstration and User Defined function by the high-level interface functional module again, thereby realize the gridding application program interface based on Web of the user customizable that grid platform is irrelevant.Particularly, the present invention has following advantage and effect.
(1) transparency of grid platform
Owing to used the grid platform adaptation module that different grid platforms is converted to unified format, can change mutually by the grid platform adaptation module of correspondence calling of grid platform with return results, therefore, can't see the isomerism between the grid platform from the upper strata, the programmer need not be concerned about the employed grid platform of bottom, thereby has realized the transparency of grid platform.
(2) platform selecting of dynamic self-adapting
Used the interface engine module to connect grid platform adaptation module and functional module interface in the system, the call request of the automatic analysis interface functional module of interface engine module, select the grid platform of adaptation, and then request sent to corresponding grid platform adaptation module, to call the call format that is converted to corresponding platform by adapter, thereby the dynamic self-adapting of having realized platform is selected.
(3) call the automatic generation at interface
Web display module in the functional module interface provides the automatic generative capacity of calling the interface, the Web display module has defined a series of parameter, the programmer only need provide the value of these parameters when creating gridding application program, the Web display module is resolved these parameter values, automatically analyze call parameters and the rreturn value that to create application program, the interface of calling that generates this gridding application program according to the number and the type of parameter and rreturn value.
(4) Fu Wu automatic parsing
By the service parsing module in the functional module interface, can realize parsing, and then obtain parameter type and the number and the return type of corresponding with service automatically the mesh services descriptive language.
(5) User Defined interface
User Defined interface module in the functional module interface provides the ability of creating the interface of customization, in use, the user describes out the required function of finishing of its interface by the mechanism of similar workflow, and these functions can be finished by existing interface, after these descriptions are submitted to the User Defined interface module, the User Defined interface that generation is had specific function.
Description of drawings
Fig. 1 is the system construction drawing that the present invention is based on the gridding application program interface system of Web.
Fig. 2 is a grid platform adaptation module structural representation.
Fig. 3 is a grid platform adaptation module flow chart of data processing synoptic diagram.
Fig. 4 is an interface engine modular structure synoptic diagram.
Fig. 5 is the functional module interface structural representation.
Fig. 6 is a functional module interface flow chart of data processing synoptic diagram.
Fig. 7 is a User Defined interface module structural representation.
Fig. 8 is a User Defined interface module flow chart of data processing synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing the present invention is done explanation in further detail.
As shown in Figure 1, system of the present invention comprises the grid platform adaptation module 1 that is positioned at server, interface engine module 2 and functional module interface 3, and the three cooperatively interacts provides a cover the convenient general grid application programming interface of using.
Grid platform adaptation module 1 shielding bottom grid heterogeneous structure of platform.Grid platform adaptation module 1 is used for the various data layouts of switch grid platform; It is the corresponding adapter of each grid platform exploitation, is unified standard with the format conversion of various grid platforms, and the isomerism between the various like this grid platforms will can not influence the programmer on upper strata.
Interface engine module 2 connecting interface functional modules 3 and grid platform adaptation module 1.Interface engine module 2 is used for providing basic grid programmed environment to last layer gridding application program DLL (dynamic link library); It accepts the output of grid platform adaptation module 1, merges the many corresponding grid platforms of a plurality of adapters, provides single, simple grid environment to the upper strata.
Functional module interface 3 externally provides unified interface definition and to using the analytic ability that calls of this interface.This module offers one of grid programmer based on the simple DLL (dynamic link library) of Web, and it supports Web to call the automatic generation at interface, and the function of User Defined interface is provided simultaneously, has simplified writing of gridding application program greatly.
Respectively each module is described in detail below.
As shown in Figure 2, grid platform adaptation module 1 comprises parameter type mapping block 11, parameter type modular converter 12 and parameter format modular converter 13.
Parameter type mapping block 11 is used for the parameter type diversity that the different grid platforms of Treated Base exist, parameter type mapping block 11 judges whether the parameter type of grid platform and system's operation parameter type be compatible, if incompatible then select mapping scheme between parameter, will send to parameter type modular converter 12 from data and the corresponding mapping scheme that the bottom grid platform obtains; Behind the selected mapping scheme, finish two kinds of conversions between the parameter type by parameter type modular converter 12, be that parameter type modular converter 12 converts compatible type transfer to parameter format modular converter 13 from the data that parameter type mapping block 11 obtains according to selected mapping scheme, accept to become the type of corresponding grid platform simultaneously from the data-switching that parameter format modular converter 13 obtains; Data type after the type conversion that parameter format modular converter 13 is accepted to send over from parameter type modular converter 12, and convert thereof into to the data of consolidation form and hand in layer interface engine modules 2, the uniform data format conversion with the upper strata becomes distinctive data layout to hand over parameter type modular converter 12 simultaneously.
The flow chart of data processing of grid platform adaptation module 1 is as shown in Figure 3:
1) accepts the data that the bottom grid platform sends over, obtain the type of these data, search the data type that exists in the system simultaneously, judge whether the data type of bottom grid platform and system data type be compatible.
2) if 1) result that judges is for not, then uses the data type mapping mechanism to search suitable type mapping scheme, this mapping scheme is from 1) the data type obtained and the mapping between system's known types.
3) by 2) in obtained the type mapping scheme after, between existing type and system's known type, carry out data-switching according to module predetermined data type conversion scheme.
4) after step 3), obtained the data of system compatible type, but failed to provide uniform data format, this step translation data form, the feasible data that finally offer interface engine module 2 consolidation forms to upper layer module.
5) if 1) the result for being that promptly the data type of underlying platform is system's known type, then directly carries out step 4), promptly data is carried out format conversion.
As shown in Figure 4, interface engine module 2 comprises data engine submodule 21, workflow engine submodule 22, information center's engine submodule 23, job scheduling engine submodule 24 and interoperability engine submodule 25.
Data engine submodule 21 is used for handling the operation of gridding application program relevant data part, and data engine submodule 21 will be mutual with data space miscellaneous in the grid platform, supports the more data space; Workflow engine submodule 22 is used for handling the operation that gridding application program relates to the workflow part, and this workflow engine submodule 22 is supported existing multiple workflow engine, and the workflow that consolidation form is provided is to high-level interface; Information center's engine submodule 23 is used for handling the gridding application program operation of core for information about, and confidence central engine submodule 23 provides the unified inquiry at isomery lattice platform information center, and powerful service-seeking ability promptly is provided; Job scheduling engine submodule 24 is used for handling the operation of the relevant job scheduling part of gridding application program, and this module provides the uniform dispatching of operation between different grid platforms; Interoperability engine submodule 25 is at the gridding application program exploitation that runs on a plurality of isomery lattice platforms, this module provides the direct access ability between two platforms, the major function of the interface engine module 2 of promptly having reached us by the cooperatively interacting of above five parts.
The flow chart of data processing of interface engine module 2 is as follows:
1) the consolidation form data of coming out from grid platform adaptation module 1 are at first carried out the engine selection, judge and next use what engine to handle this data.
2) if 1) in what come is the relevant data of data center, then select data engine submodule 21 to handle.
3) if 1) in what come is the relevant data of workflow, then select workflow engine submodule 22 to handle.
4) if 1) in what come is the relevant data of job scheduling, then select job scheduling engine submodule 23 to handle.
5) if 1) in what come is the relevant data of information center, then select information center's engine submodule 24 to handle.
6) if 1) in what come is the data of operation mutually between relevant two grid platforms, then select interoperability engine submodule 25 to handle.
7) through top 2), 3), 4), 5), 6) after the step, the output of engine is delivered to functional module interface.
As shown in Figure 5, functional module interface comprises service parsing module 31, backstage scheduler module 32, Web display module 33, User Defined interface module 34 these four modules compositions.
Service parsing module 31 obtains page parameter from Web display module 33 or User Defined interface module 34, and the service parameter type after will resolving and number pass to Web display module 33, simultaneously, service parsing module 31 sends the page parameter of its acquisition to backstage scheduler module 32 after treatment, and obtain mesh services descriptive language document, and then the document is resolved from backstage scheduler module 32; Backstage scheduler module 32 is accepted the task parameters of Web display module 33 and is submitted to, generate corresponding calling task and submit to interface engine module 2, simultaneously, the return results that this module receives an assignment from interface engine module 2 send Web display module 33 to be shown, in addition, the page parameter after backstage scheduler module 32 is accepted it and handled from service parsing module 31 also returns to service parsing module 31 with the mesh services descriptive language document that returns; Web display module 33 obtains page parameter or task parameters from client, and the result of correspondence turned back to client, simultaneously, the page parameter that Web display module 33 will be judged as self defined interface passes to User Defined interface module 34, the page parameter of non-self defined interface is passed to service parsing module 31, and from serving parameter type and the number after parsing module 31 obtains parsing, at last, the Web display module passes to backstage scheduler module 32 with task parameters and obtains the result of task call from this module; The page parameter that User Defined interface module 34 is accepted from the self defined interface of Web display module 33, the interface corresponding page parameter after will defining simultaneously pass to service parsing module 31.
The flow chart of data processing of functional module interface 3 is as shown in Figure 6:
1) Web display module 33 is accepted the page parameter that the Web page is submitted to, resolves the parameters value, judges whether the interface that the page uses is self defined interface.
2) if 1) in to be judged as be that promptly institute's interface that uses is the User Defined interface, then turns to the User Defined interface module to carry out interface and encapsulates.
3) page parameter of submitting to according to the Web page uses the Core Feature of service parsing module 31 to resolve the service of using.
4) if 1) in be judged as not, then directly by 1) jump to the 3rd) step.
5) 3) in finish service and resolve after, use Web display module 33 to generate the corresponding interface of calling according to the result after resolving.
6) fill in task parameters and submission task in the interface calling of generation.
7) task sends to background process, generates calling corresponding interface.
8) this is called submit to lower floor's interface engine module 2 and handle.
9) after task is finished dealing with, transmit the task result from lower floor, this result is sent to Web display module 33 show.
As shown in Figure 7, the User Defined interface module 34 of above-mentioned discussion comprises interface type judgement submodule 341, Interface Functional Analysis submodule 342 and interface function synthon module 343.
Interface type judges that submodule 341 is used for judging whether employed interface is self defined interface; If the result after then will judging passes to Interface Functional Analysis submodule 342; Interface Functional Analysis submodule 342 is used for analyzing realizes which existing interface this interface need use, and the result is outputed to interface function synthon module 343; At last generate final interface by interface function synthon module 343.
The flow chart of data processing of User Defined interface module 34 is as shown in Figure 8:
1) programmer fills in one about whether using the parameter of self defined interface in the Web page.
2) analyze the parameter of submitting in the page, judge whether to use custom parameter.
3) if 2) in to be judged as be that then the parameter that the user is submitted to is given Interface Functional Analysis submodule 342, analyzes this interface and can be realized by the existing interface of which system.
4) according to 3) the result carry out the synthetic of interface function, thereby generate self-defining interface.
5) interface that generates is sent to Web display module 33 and show, generate the interface of calling of corresponding interface.
6) if 2) in be judged as not, then leap to step 5).

Claims (5)

1. gridding application program interface system based on Web, it is characterized in that: this system comprises grid platform adaptation module (1), interface engine module (2) and the functional module interface (3) that is positioned at server;
Grid platform adaptation module (1) is used to finish Data Format Transform between isomery lattice platform and the high-level interface engine modules (2);
Interface engine module (2) connecting interface functional module (3) and grid platform adaptation module (1) provide basic grid programmed environment to last layer gridding application program DLL (dynamic link library);
Functional module interface (3) is externally finished unified interface definition, and the task of calling this interface is resolved, and generate docking port engine modules (2) and call, and the task call result that returns of receiving interface engine modules (2).
2. gridding application program interface system according to claim 1 is characterized in that: functional module interface comprises service parsing module (31), backstage scheduler module (32), Web display module (33) and User Defined interface module (34);
Service parsing module (31) obtains page parameter from Web display module (33) or User Defined interface module (34), and the service parameter type after will resolving and number pass to Web display module (33), simultaneously, service parsing module (31) sends the page parameter of its acquisition to backstage scheduler module (32) after treatment, and obtain mesh services descriptive language document, and then the document is resolved from backstage scheduler module (32);
Backstage scheduler module (32) is accepted the task parameters of Web display module (33) and is submitted to, generate corresponding calling task and submit to interface engine module (2), simultaneously, the return results that backstage scheduler module (32) receives an assignment from interface engine module (2) send Web display module (33) to be shown, the page parameter after also accepting it and handle from service parsing module (31) also returns to service parsing module (31) with the mesh services descriptive language document that returns;
Web display module (33) obtains page parameter or task parameters from client, and the result of correspondence turned back to client, simultaneously, the page parameter that Web display module (33) will be judged as self defined interface passes to User Defined interface module (34), the page parameter of non-self defined interface is passed to service parsing module (31), and from serving parameter type and the number after parsing module (31) obtains parsing; Web display module (33) passes to backstage scheduler module (32) with task parameters and obtains the result of task call from backstage scheduler module (32);
User Defined interface module (34) is accepted the page parameter from the self defined interface of Web display module (33), and the interface corresponding page parameter after will defining simultaneously passes to service parsing module (31).
3. gridding application program interface system according to claim 1 and 2 is characterized in that: grid platform adaptation module (1) comprises parameter type mapping block (11), parameter type modular converter (12) and parameter format modular converter (13);
Parameter type mapping block (11) is used to judge whether the parameter type of grid platform and system's operation parameter type be compatible, if it is compatible, send the data to parameter type modular converter (12), otherwise the mapping scheme between the selection parameter sends to parameter type modular converter (12) with data and mapping scheme again;
The data that parameter type modular converter (12) is used for parameter type mapping block (11) is sent convert compatible type transfer to parameter format modular converter (13) according to selected mapping scheme, accept to become from the data-switching that parameter format modular converter (13) obtains the type of corresponding grid platform simultaneously; Give parameter format modular converter (13) with the data forwarding of compatibility;
Parameter format modular converter (13) is accepted from the data of parameter type modular converter (12) transmission, and convert thereof into to the data of consolidation form and hand in layer interface engine modules (2), the uniform data format conversion with the upper strata becomes the data layout of corresponding grid platform to hand over parameter type modular converter (12) simultaneously.
4. gridding application program interface system according to claim 1 and 2 is characterized in that: interface engine module (2) comprises data engine submodule (21), workflow engine submodule (22), information center's engine submodule (23), job scheduling engine submodule (24) and interoperability engine submodule (25);
The data that provide from grid platform adaptation module (1) are provided data engine submodule (21), and the data-switching that relates to the data space operation in the gridding application program is become the data of unified data space form, offer functional module interface (3);
The data that provide from grid platform adaptation module (1) are provided workflow engine submodule (22), and the data-switching that relates to the workflow operation in the gridding application program is become the data of unified workflow form, offer functional module interface (3);
The data that provide from grid platform adaptation module (1) are provided information center's engine submodule (23), and the data-switching that relates to information center's operation in the gridding application program is become the data of unified information center's form, offer functional module interface (3);
The data that provide from grid platform adaptation module (1) are provided job scheduling engine submodule (24), and the data-switching that relates to the job scheduling operation in the gridding application program is become the data of unified job scheduling form, offer functional module interface (3);
The data that provide from grid platform adaptation module (1) are provided interoperability engine submodule (25), and the data-switching that relates to interoperability in the gridding application program is become the data of unified interoperability form, offer functional module interface (3).
5. gridding application program interface system according to claim 2 is characterized in that: User Defined interface module (34) comprises interface type judgement submodule (341), Interface Functional Analysis submodule (342) and interface function synthon module (343);
Interface type judges that submodule (341) is used for judging whether employed interface is self defined interface; If the result after then will judging passes to Interface Functional Analysis submodule (342);
Interface Functional Analysis submodule (342) is used for analyzing realizes which existing interface this interface need use, and the result is outputed to interface function synthon module (343);
Interface function synthon module (343) is used to generate final interface.
CN2007101686827A 2007-12-07 2007-12-07 Gridding application program interface system based on Web Expired - Fee Related CN101206568B (en)

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