CN111459489A - Automatic service packaging method, system and application of dynamic library - Google Patents
Automatic service packaging method, system and application of dynamic library Download PDFInfo
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Abstract
The invention discloses a dynamic library automatic service packaging method and a system, which belong to the technical field of computers and are used for solving the technical problems of high development cost and maintenance cost and disordered standards of the current dynamic library manual service packaging, and adopt the technical scheme that: carrying out dynamic library description, function type definition and parameter description in advance to form a function description file; reading and analyzing the function description file, obtaining the name and path of the dynamic library to be loaded and the type of each function in the dynamic library, establishing a function name/type mapping table, and preloading the dynamic library; and finding the corresponding function type pointer from the function name/type mapping table according to the function name, obtaining the corresponding address of the function in the preloaded dynamic library, and completing the calling of the function. The method and the system have the advantages of high flexibility, simple and convenient operation, low development cost and maintenance cost and the like.
Description
Technical Field
The invention mainly relates to the technical field of computers, in particular to a dynamic library automatic service packaging method, a dynamic library automatic service packaging system and application.
Background
As industrial automation processes continue to develop, the more scenes a robot is used in an industrial field. The control methods of robots of different models are different. At present, the current practice is that an SDK (software development kit) provided by a manufacturer for robot control is generally in a dynamic link library form and is called by an upper computer user, and the manufacturer in the dynamic library interacts with the robot locally through a socket form to realize the control of the robot. This approach will result in: if a plurality of users need to perform information interaction with a certain robot, corresponding dynamic library environments need to be configured and installed.
With the gradual maturity of the application of the Service Oriented Architecture (SOA), a new idea is provided for the flexible expansion of the robot function. By utilizing the coarse-grained, open and loosely-coupled service structure characteristics of the SOA, the flexibility of the distributed robot system is improved, and the agile development of industrial robot software is realized.
The purpose of the service encapsulation of the dynamic library is to map the locally encapsulated function library on the internet to be used by more users in a service form, thereby reducing the coupling of each node in the distributed system. At present, the service encapsulation based on the dynamic library still depends on manpower, and the process can be decomposed into two parts: service publishing and dynamic library loading. The services are released by a plurality of framework tools, such as gsoap under c + +, Axis in java ee and the like. The loading of the dynamic library has two modes, static calling and dynamic calling. The process of servitization encapsulation for a known dynamic library is as follows:
step 1: checking an interface document of the dynamic library, and designing a service interface according to the document;
step 2: designing a service framework and generating a service release code;
and step 3: loading mapping of functions in the library;
and 4, step 4: and embedding each function in the dynamic library into the service framework.
Because the name types of the functions in each library have certain differences, the existing dynamic library service encapsulation mainly depends on manual work, firstly, the interface of each function in the library needs to be designed manually, and then, the interface is mapped to the specific function in the library.
All the steps require technical personnel to participate in deep participation, so that the existing dynamic library manual service encapsulation has the following defects:
1. from the technical requirement, the service encapsulation requires developers to deeply understand network development, corresponding service interfaces need to be designed aiming at the interfaces in the library, the system development cost is increased, and meanwhile, the manual service encapsulation is complex and has large workload and technical risks;
2. due to the fact that code compiling is involved, a specially-assigned person is needed to maintain and upgrade in the later period, and later-period maintenance cost is increased;
3. service packaging standards implemented by different teams are inevitably different, and various custom standards lead to more confusion (different manufacturers define respective standards).
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides the automatic service packaging method, the automatic service packaging system and the automatic service packaging application of the dynamic library, which have the advantages of high flexibility, simple and convenient operation and low cost.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a dynamic library automatic service encapsulation method comprises the following steps:
s01, performing dynamic library description, function type definition and parameter description in advance to form a function description file;
s02, reading and analyzing the function description file, obtaining the name and path of the dynamic library to be loaded and the type of each function in the dynamic library, establishing a function name/type mapping table, and preloading the dynamic library;
s03, finding out the corresponding function type pointer from the function name/type mapping table according to the function name, obtaining the corresponding address of the function in the preloaded dynamic library, and completing the function call.
As a further improvement of the above technical solution:
the specific process of step S03 is as follows:
s31, after receiving the function list information request, reading the function list information analyzed by the function description file;
s32, according to the function name and parameter information in the function call request, finding the corresponding function type pointer from the function name/type mapping table according to the function name, obtaining the corresponding address and function type of the function in the preloaded dynamic library and the processing function of the type, and completing the call of the function in the processing function.
In step S01, the function type definition method is:
s11, simplifying the function type, wherein the function type is a function and a return value based on the function;
s12, defining the function type based on the simplified function: return value type _ argument 1 type | argument 2 type | argument 3 type | … where function return value type is underlined followed by the type of the 1 st, 2 nd, 3 … th argument.
In step S01, the function description file is obtained by organizing the library provider, the library path, the function name in the library, the function type, and the function by the json syntax.
The invention also discloses an automatic service packaging system of the dynamic library, which comprises
The file analysis module is used for analyzing a pre-formed function description file and establishing a function name/type mapping table and a local function list;
the dynamic library preloading module is used for acquiring the name and the path of the dynamic library to be loaded from the function description file and preloading the dynamic library;
the service issuing interaction module is used for receiving the function list query request, reading the local function list and acquiring the function name; receiving a function calling request, and calling a function analysis calling module;
and the function analysis calling module is used for searching the corresponding function type pointer from the function name/type mapping table according to the function name acquired by the service release interaction module, acquiring the corresponding address of the function in the preloaded dynamic library and completing the calling of the local function.
As a further improvement of the above technical solution:
the system also comprises a function type library which is used for loading various preset function type pointers and the function parameter analysis method.
The service issuing interaction module comprises a function list inquiry service interface and a function calling service interface.
The invention further discloses an application of the dynamic library automatic service encapsulation system,
after a client process sends a request for acquiring function list information, a new thread is created by a server formed by the dynamic library automatic service encapsulation system, a function description file is read in the thread and analyzed, and the function description file is returned to the client;
the client obtains function list information and transmits a function name to be called and corresponding parameters to the server;
aiming at a function call request sent by a client, a new thread is created by a server, function parameters are analyzed in the thread, and an address and a function type in a library and a processing function of the function type are obtained according to a function name;
and completing the calling of the local function in the processing function, and converting the return value of the function into a character string and sending the character string back to the client.
Compared with the prior art, the invention has the advantages that:
the invention relates to a dynamic library automatic service encapsulation method and a system, which realize the loading of functions in any appointed dynamic library through the description of the dynamic library, and issue a local library function interface on a bus based on a service technology to automatically realize the service of various existing function library functions; in addition, because the user can map the local function library to the network for other equipment users to use only by describing the functions in the existing library without developing and compiling the work, the flexibility is improved, the work complexity is reduced, the production efficiency is greatly improved, and the comprehensive cost is reduced; in addition, the service interface standard is also specified through the realization of a standardized component tool.
Drawings
FIG. 1 is a process flow diagram of an embodiment of the process of the present invention.
FIG. 2 is a block diagram of an embodiment of the system of the present invention.
FIG. 3 is a diagram illustrating an example of dynamic library information description according to the present invention.
FIG. 4 is an exemplary diagram of a parameter description format according to the present invention.
Detailed Description
The invention is further described below with reference to the figures and the specific embodiments of the description.
As shown in fig. 1 and fig. 2, the method for encapsulating dynamic library automatic services of the present embodiment includes the steps of:
s01, performing dynamic library description, function type definition and parameter description in advance to form a function description file;
s02, reading and analyzing the function description file, obtaining the name and path of the dynamic library to be loaded and the type of each function in the dynamic library, establishing a function name/type mapping table, and preloading the dynamic library;
s03, finding out the corresponding function type pointer from the function name/type mapping table according to the function name, obtaining the corresponding address of the function in the preloaded dynamic library, and completing the function call.
In this embodiment, the specific process of step S03 is as follows:
s31, after receiving the function list information request, reading the function list information analyzed by the function description file;
s32, according to the function name and parameter information in the function call request, finding the corresponding function type pointer from the function name/type mapping table according to the function name, obtaining the corresponding address and function type of the function in the preloaded dynamic library and the processing function of the type, and completing the call of the function in the processing function.
In this embodiment, in step S01, the function type definition method includes:
s11, simplifying the function type, wherein the function type is a function and a return value based on the function;
s12, defining the function type based on the simplified function: return value type _ argument 1 type | argument 2 type | argument 3 type | … where function return value type is underlined followed by the type of the 1 st, 2 nd, 3 … th argument.
In this embodiment, in step S01, the function description file is obtained by organizing the library provider, the library path, the function name in the library, the function type, and the function by the json syntax. Of course, for the description of the dynamic library function, json format description is not limited, and may be any agreed format, and the description mainly aims to establish the mapping between the function name and the function type. In addition, the description of the parameter list does not limit the json format, and any agreed format can be adopted, and the field is mainly used for clearly describing the type and value character string type of each parameter.
The invention also discloses an automatic service encapsulation system of the dynamic library, which comprises a file analysis module, a function description module and a function module, wherein the file analysis module is used for analyzing the pre-formed function description file and establishing a function name/type mapping table and a local function list;
the dynamic library preloading module is used for acquiring the name and the path of the dynamic library to be loaded from the function description file and preloading the dynamic library;
the service issuing interaction module is used for receiving the function list query request, reading the local function list and acquiring the function name; receiving a function calling request, and calling a function analysis calling module;
and the function analysis calling module is used for searching the corresponding function type pointer from the function name/type mapping table according to the function name acquired by the service release interaction module, acquiring the corresponding address of the function in the preloaded dynamic library and completing the calling of the local function.
The overall structure design is as shown in fig. 1, firstly, a function type description method and a parameter description method are defined, and attributes such as a path of a dynamic library, a function name, a type and parameters of a library function are identified by using json grammar;
on the basis, analyzing the description text by using a Rapid Json tool to obtain a manufacturer dynamic library path and the type of each function in the library, establishing a function name/type mapping table, and preloading the library;
meanwhile, the service issuing interaction module provides two service interfaces of function list inquiry and function call for the outside.
The client obtains each function and a using method of the current service node through the function list query interface, and then calls the service node function through the function call interface.
When the component receives the function name and parameter information sent by the client, the service release interaction module transfers the received data to the function analysis calling module, the function analysis calling module is called, a function type pointer corresponding to the function name is searched from a function name/type mapping table according to the function name, an address corresponding to the function is obtained by utilizing a dynamic library dynamic calling technology, wherein the parameter of the function is obtained by analyzing a parameter character string transmitted together with the function name; and converting the return value of the function into a json format character string and returning the json format character string to the client.
Specifically, the dynamic library description and function type are defined as: the manufacturer describes the library function needing service encapsulation, and the description file comprises some attributes of the robot, dynamic library paths and other information. One of the important attributes is the description of the functions in the dynamic library. The description of the function is based on the function type, and the definition method of the function type is as follows:
where the function type is function and return value based on the function, the common types are first simplified as shown in table 1:
table 1 data type abbreviations:
| data type | Abbreviations |
| char | C |
| short | S |
| int | I |
| float | F |
| double | D |
| char* | [C |
| short* | [S |
| int* | [I |
| float* | [F |
| double* | [D |
| unsigned | U |
Based on the data type abbreviated above, the function type is defined in such a way that, for a function type, the function return value type is before the underline, and the type of the 1 st, 2 … th parameter is after the underline.
(Return value type _ Parameter 1 type | Parameter 2 type | Parameter 3 type | …)
For example:
table 2 example function types
| Function(s) | Type (B) |
| void set_speed(int num)； | V_I |
| float xxxx(void) | F_V |
| char*get_name(void) | [C_V |
| double set_xx(double a) | D_D |
Finally, the library providers, library paths, function names in the library, function types, and function introductions are organized in the form of FIG. 2 using a json grammar. The description document describes the path of the library, the name of each function in the library and the corresponding function type based on the json grammar.
Dll is shown in fig. 2 as a dynamic library named agv.dll with 4 functions, agv _ move2 type V _ III, agv _ set _ name type V _ [ C, agv _ set _ speed type I _ I, agv _ get _ direct type [ C _ V, respectively. brief is a brief description of the function, and is self-determined by the manufacturer.
2) A function parameter description is defined. The function parameter description is also based on the json description, the format of which is shown in fig. 3. The legend shows a description containing 5 parameters. The first parameter is int type and has a value of 1024; the second parameter is a character string with a value of "hello world", the third parameter is double with a value of 10.24; the fourth parameter is int array, value [ 1012910 ], the last one is double type array, value [ 10.112.29.310.4 ].
In this embodiment, descriptions and interfaces of the modules are as follows:
1) file analysis module
The following steps are described: the module is responsible for describing json documents, and the module specifically realizes reference official documents by utilizing the existing mature json resolution library RapidJson.
2) Function name/type mapping
The following steps are described: the module extracts each function name-function type pair in functions node from the function description document and stores the function name-function type pairs in std:: map type.
Interface: and obtaining the function name-type map according to the configuration file path.
3) Dynamic function library preloading
The following steps are described: the module obtains the path name of the dynamic library to be loaded from the function description document and calls a system interface to preload the library.
Interface 1: obtaining dynamic library paths from configuration files
And (3) interface 2: loading dynamic libraries from function names
4) Local function list description
The following steps are described: the module extracts information in functions nodes in the description document.
Interface: obtaining local library function list description information for a given cache
5) Service publishing interactions
The following steps are described: and the module publishes a service interface provided by the component to perform data interaction with the client.
Interface 1: wsdl distribution function
And (3) interface 2: WebService acquisition function list query interface function
And interface 3: WebService calls function interface function
And interface 4: implementing service publishing with gsoap
6) Call function parsing
The following steps are described: the module realizes the calling of the local function by combining the function name/type mapping module and the function dynamic function library loading module according to the client calling function and the parameters thereof transmitted by the service issuing interaction module, and returns the return value to the service interaction module in the form of a json character string.
Interface: call function parsing
7) Library of function types
The following steps are described: various preset function type pointers and a type function parameter analysis method are loaded in the module.
Defining: defining and processing universal function pointer for each type of function
Interface: registering a function of a certain type and processing the function
8) Log module
The following steps are described: and the program logs of the basic module are printed in a grading way and are called by other modules, so that the program operation tracking and error troubleshooting are facilitated.
Interface: various levels print the interface.
The following provides a specific application example by combining the above automatic service packaging system and packaging method for dynamic libraries:
as shown in the figures 1 and 2, after the program runs, the program runs according to the following process that firstly a main thread is started, ① initializes a log system, ② analyzes and constructs a function name-type key value pair by using a file analysis module, ③ obtains the name of a loaded dynamic library through a library function description file and carries out preloading, ④ waits for the connection of a client after issuing a web service;
after a client process sends a request for acquiring function list information, a server creates a new thread, and reads the content of a configuration description file in the thread and returns the content to the client;
the client obtains function list information of the service node, and transmits a function name to be called and corresponding parameters to the server through a function calling service interface;
aiming at a function call request sent by a client, a new thread is created in a server, function parameters are analyzed in the thread, and an address and a function type in a library and a processing function of the function type are obtained according to a function name;
and transferring the parameter map to a processing function, completing the calling of the local function in the processing function, and converting the return value of the function into a json format character string and sending the json format character string to the client.
The invention relates to a dynamic library automatic service encapsulation method and a system, which realize the loading of functions in any appointed dynamic library through the description of the dynamic library, and issue a local library function interface on a bus based on a service technology to automatically realize the service of various existing function library functions; in addition, because the user can map the local function library to the network for other equipment users to use only by describing the functions in the existing library without developing and compiling the work, the flexibility is improved, the work complexity is reduced, the generation efficiency is greatly improved, and the comprehensive cost is reduced.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (8)
1. An automatic service encapsulation method for a dynamic library is characterized by comprising the following steps:
s01, describing the dynamic library and functions in the dynamic library in advance to form a function description file;
s02, reading and analyzing the function description file, obtaining the name and path of the dynamic library to be loaded and the type of each function in the dynamic library, establishing a function name/type mapping table, and preloading the dynamic library;
s03, finding out the corresponding function type pointer from the function name/type mapping table according to the function name, obtaining the corresponding address of the function in the preloaded dynamic library, and completing the function call.
2. The method for packaging automatic services of dynamic libraries according to claim 1, wherein the specific process of step S03 is:
s31, after receiving the function list information request, reading the function list information analyzed by the function description file;
s32, according to the function name and parameter information in the function call request, finding the corresponding function type pointer from the function name/type mapping table according to the function name, obtaining the corresponding address and function type of the function in the preloaded dynamic library and the processing function of the type, and completing the call of the function in the processing function.
3. The method for packaging the dynamic library automation service as claimed in claim 1 or 2, wherein in step S01, the description of the function is based on the function type defined by the following method:
s11, simplifying the function type, wherein the function type is a function and a return value based on the function;
s12, defining the function type based on the simplified function: return value type _ argument 1 type | argument 2 type | argument 3 type | … where function return value type is underlined followed by the type of the 1 st, 2 nd, 3 … th argument.
4. The method for packaging automatic services in dynamic library according to claim 1 or 2, wherein in step S01, the function description file is obtained by organizing library providers, library paths, function names in libraries, function types and function functions through json syntax.
5. An automatic service packaging system for dynamic library is characterized by comprising
The file analysis module is used for analyzing a pre-formed function description file and establishing a function name/type mapping table and a local function list;
the dynamic library preloading module is used for acquiring the name and the path of the dynamic library to be loaded from the function description file and preloading the dynamic library;
the service issuing interaction module is used for receiving the function list query request, reading the local function list and acquiring the function name; receiving a function calling request, and calling a function analysis calling module;
and the function analysis calling module is used for searching the corresponding function type pointer from the function name/type mapping table according to the function name acquired by the service release interaction module, acquiring the corresponding address of the function in the preloaded dynamic library and completing the calling of the local function.
6. The system according to claim 5, further comprising a function type library for loading various preset function type pointers and the method for parsing the type of function parameter.
7. The dynamic library automation encapsulation system of claim 6 wherein the service publishing interaction module includes a function list query service interface and a function call service interface.
8. The application of the dynamic library automatic service encapsulation system is characterized in that,
after a client process sends a request for acquiring function list information, a new thread is created by a server formed by the dynamic library automatic service encapsulation system, a function description file is read in the thread and analyzed, and the function description file is returned to the client;
the client obtains function list information and transmits a function name to be called and corresponding parameters to the server;
aiming at a function call request sent by a client, a new thread is created by a server, function parameters are analyzed in the thread, and an address and a function type in a library and a processing function of the function type are obtained according to a function name;
and completing the calling of the local function in the processing function, and converting the return value of the function into a character string and sending the character string back to the client.
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| 孙滨;周杨;郭晓东;: "动态链接库技术及其应用", 电脑编程技巧与维护, no. 15 * |
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| CN112596824A (en) * | 2021-01-04 | 2021-04-02 | 天津中新智冠信息技术有限公司 | Information interaction method and device, electronic equipment and storage medium |
| CN113296822A (en) * | 2021-05-27 | 2021-08-24 | 北京思特奇信息技术股份有限公司 | Dynamic library-based database system online upgrading method and system |
| CN113296822B (en) * | 2021-05-27 | 2023-11-03 | 北京思特奇信息技术股份有限公司 | Online upgrading method and system for database system based on dynamic library |
| CN115082058A (en) * | 2022-07-25 | 2022-09-20 | 上海富友支付服务股份有限公司 | Virtual account transaction management method and system based on dynamic control |
| CN116719871A (en) * | 2023-06-29 | 2023-09-08 | 上海中汇亿达金融信息技术有限公司 | Data interaction method, device and system of transaction management system |
| CN116719871B (en) * | 2023-06-29 | 2024-03-19 | 上海中汇亿达金融信息技术有限公司 | Data interaction method, device and system of transaction management system |
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