CN105681346A - Method for realizing message analysis based on factory class - Google Patents
Method for realizing message analysis based on factory class Download PDFInfo
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- CN105681346A CN105681346A CN201610145135.6A CN201610145135A CN105681346A CN 105681346 A CN105681346 A CN 105681346A CN 201610145135 A CN201610145135 A CN 201610145135A CN 105681346 A CN105681346 A CN 105681346A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
Abstract
The invention provides a method for realizing message analysis based on a factory class. The method utilizes a singleton mode in a loki base to realize the factory class, which comprises a protocol analysis CarCmdFactory, an automatically generated protocol analysis class CCarCmdParserObj and a protocol analysis base class CCarCmdParser; and the factory class maintains a unique instance in a project, registers the protocol analysis classes into the instance, and obtains the corresponding protocol analysis class from the instance for analysis according to a protocol name when a message is to be analyzed. The method brings greater extensibility and modification amount as few as possible to the system of the project, and increases working efficiency.
Description
Technical field
The present invention relates to communication technique field, particularly relate to a kind of method realizing packet parsing based on factory's class.
Background technology
When object (agreement) is fewer, the place needed in the project directly creates object by new, and this is possible, and fairly simple; But the development along with project, the object (agreement) of access is needed to get more and more, still the place needed in the project directly creates object by new, if the situations such as then creation method change occur, then need to revise code everywhere, maintenance, maintenance difficulties increase, it is easy to produce various problem.
Summary of the invention
The technical problem to be solved in the present invention, is to provide a kind of method realizing packet parsing based on factory's class, bring bigger extensibility and as far as possible few amendment amount to the system of project, it is to increase working efficiency.
The present invention is achieved in that a kind of method realizing packet parsing based on factory's class, described method utilizes the monomer pattern in loki storehouse to realize factory's class, and described factory class comprises: protocol analysis factory class CarCmdFactory, automatically generation protocol analysis class CCarCmdParserObj and protocol analysis base class CCarCmdParser;
Described protocol analysis factory class CarCmdFactory dynamically creates corresponding protocol analysis object according to terminal agreement title; Described automatic generation protocol analysis class CCarCmdParserObj is by creating corresponding protocol analysis object to protocol analysis factory class CarCmdFactory specified protocol name, and returning an object value interface pointer; And also it is responsible for the internal memory release of protocol analysis object; Described protocol analysis base class CCarCmdParser provides various public interface; Adjust user without the need to calling concrete protocol analysis class, as long as calling this protocol analysis base class;
Described factory class safeguards a unique instance in the project, is registered in the middle of this example by each protocol analysis class, and when there being message to be resolved, described factory class obtains corresponding protocol analysis class from described example according to protocol name and resolves.
Further, described method is further specifically: line command is with, before parsing uplink message, first increasing a concrete protocol analysis class under treatment;
This concrete protocol analysis class need to be inherited in described protocol analysis base class CCarCmdParser, and wherein each concrete protocol analysis class all to be inherited such;
The function of protocol analysis base class CCarCmdParser is to provide various public interface, and this public interface comprises: uplink message resolves interface Parser () and down order resolves interface SetPosReport (); Adjust user when calling each interface, it is not necessary to call concrete protocol analysis class, as long as calling this protocol analysis base class CCarCmdParser;
Protocol analysis class has realized, then by corresponding registration interface, this parsing class is registered in protocol analysis factory class CarCmdFactory;
Factory's class safeguards a unique instance in the project, is registered in the middle of this example by each protocol analysis class, and when there being message to be resolved, described factory class obtains corresponding protocol analysis class from described example according to protocol name and resolves.
Further, the described mode of registering this parsing class being registered in protocol analysis factory class CarCmdFactory by corresponding registration interface as: the main function of described protocol analysis factory class CarCmdFactory is to provide two interfaces: one, be that the information of each protocol analysis class is registered to inside a map table; This information: agreement title and the concrete protocol analysis object interface of establishment; Two, it is create protocol analysis object, namely utilizes agreement title to obtain the corresponding concrete protocol analysis object interface of establishment from map table, and create protocol analysis object by this interface.
Further, the flow process of described process down order is specially:
After in project, program receives locating query order, in command manager, definition generates the local object of protocol analysis class CCarCmdParserObj automatically; Automatically generate protocol analysis class CarCmdParserObj and utilize structure function, obtain interface by agreement type name from the map table protocol analysis factory class CarCmdFactory and create corresponding protocol analysis class;
Automatically generate protocol analysis class CCarCmdParserObj and three functions are mainly provided, one is utilize structure function with passing the agreement name parameter of coming in, by creating corresponding protocol analysis object to protocol analysis factory class CarCmdFactory specified protocol name, two is the pointer returning and pointing to each protocol analysis object, return of value type is CCarCmdParser, and three is the internal memory being discharged protocol analysis object by analysis structure function;
Command manager obtains, by automatically generating protocol analysis class CCarCmdParserObj object, the pointer pointing to protocol analysis class interface, and utilizes this pointer to call corresponding interface and carry out resolve command; By calling interface SetPOSReport in command manager, package according to agreement, and the bag organized is set to the order buffer zone of protocol analysis class;
Finally, command manager obtains data from the buffer zone of protocol analysis class to carry out doing further process, and utilizes CCarCmdParserObj to analyse structure function and discharge the internal memory distributing to protocol analysis object.
Further, the idiographic flow of described parsing uplink message is:
After item object program receives uplink message, in the upper row data treater of project, definition generates the local object of protocol analysis class CCarCmdParserObj automatically; Automatically generate protocol analysis class CarCmdParserObj and utilize structure function, obtain interface by agreement type name from the map table protocol analysis factory class CarCmdFactory and create corresponding protocol analysis class;
Upper row data treater obtains, by automatically generating protocol analysis class CCarCmdParserObj object, the pointer pointing to protocol analysis class interface, and utilizes this pointer to call corresponding interface and carry out analytic message;
Finally, utilize generation protocol analysis class CCarCmdParserObj automatically to analyse structure function and discharge the internal memory distributing to protocol analysis object.
Tool of the present invention has the following advantages: the present invention brings bigger extensibility and as far as possible few amendment amount to system, when increasing an agreement, as long as defining this protocol analysis class, and this protocol class title and establishment interface are registered to protocol analysis factory class, as long as passing agreement title in the place used just can create corresponding protocol analysis object, and not judging concrete agreement type; When protocol object creation method revised by needs, as long as amendment protocol object creates the definition of interface.
Accompanying drawing explanation
Fig. 1 is the inventive method overall work schematic diagram.
Fig. 2 is down order treatment scheme schematic diagram of the present invention.
Fig. 3 is the idiographic flow schematic diagram that the present invention resolves uplink message.
Embodiment
Refer to shown in Fig. 1, a kind of method realizing packet parsing based on factory's class of the present invention, described method utilizes the monomer pattern in loki storehouse to realize factory's class, and described factory class comprises: protocol analysis factory class CarCmdFactory, automatically generation protocol analysis class CCarCmdParserObj and protocol analysis base class CCarCmdParser;
Described protocol analysis factory class CarCmdFactory dynamically creates corresponding protocol analysis object according to terminal agreement title; Described automatic generation protocol analysis class CCarCmdParserObj is by creating corresponding protocol analysis object to protocol analysis factory class CarCmdFactory specified protocol name, and returning an object value interface pointer; And also it is responsible for the internal memory release of protocol analysis object; Described protocol analysis base class CCarCmdParser provides various public interface; Adjust user without the need to calling concrete protocol analysis class, as long as calling this protocol analysis base class;
Described factory class safeguards a unique instance in the project, is registered in the middle of this example by each protocol analysis class, and when there being message to be resolved, described factory class obtains corresponding protocol analysis class from described example according to protocol name and resolves.
Described method is further specifically: line command is with, before parsing uplink message, first increasing a concrete protocol analysis class under treatment; This concrete protocol analysis class is such as CSampleParser protocol analysis class, and it is defined as follows:
This concrete protocol analysis class need to be inherited in described protocol analysis base class CCarCmdParser, and wherein each concrete protocol analysis class all to be inherited such;
The function of protocol analysis base class CCarCmdParser is to provide various public interface, and this public interface comprises: uplink message resolves interface Parser () and down order resolves interface SetPosReport (); Adjust user when calling each interface, it is not necessary to call concrete protocol analysis class, as long as calling this protocol analysis base class CCarCmdParser;
Protocol analysis class has realized, then by corresponding registration interface, this parsing class is registered in protocol analysis factory class CarCmdFactory;
The described mode of registering this parsing class being registered in protocol analysis factory class CarCmdFactory by corresponding registration interface as:
CarCmdFactory::Instance () .Register (" SampleParser ", CSampleParser::Create); Wherein " SampleParser " it is agreement title, CSampleParser::Create creates protocol analysis object interface.
The main function of described protocol analysis factory class CarCmdFactory is to provide two interfaces: one, be that the information of each protocol analysis class is registered to inside a map table;This information: agreement title and the concrete protocol analysis object interface of establishment; Two, it is create protocol analysis object, namely utilizes agreement title to obtain the corresponding concrete protocol analysis object interface of establishment from map table, and create protocol analysis object by this interface. As:
The class that CarCmdFactory obtains from SingletonHolder instantiation, it is defined as follows:
Factory's class safeguards a unique instance in the project, is registered in the middle of this example by each protocol analysis class, and when there being message to be resolved, described factory class obtains corresponding protocol analysis class from described example according to protocol name and resolves.
In the present invention, the flow process of described process down order is specially:
After in project, program receives order, in command manager, definition generates the local object of protocol analysis class CCarCmdParserObj automatically; Automatically generate protocol analysis class CarCmdParserObj and utilize structure function, obtain interface by agreement type name from the map table protocol analysis factory class CarCmdFactory and create corresponding protocol analysis class;
Automatically generate protocol analysis class CCarCmdParserObj and three functions are mainly provided, one is utilize structure function with passing the agreement name parameter of coming in, by creating corresponding protocol analysis object to protocol analysis factory class CarCmdFactory specified protocol name, two is the pointer returning and pointing to each protocol analysis object, return of value type is CCarCmdParser, and three is the internal memory being discharged protocol analysis object by analysis structure function;
Wherein, the following class of the primary interface of CCarCmdParserObj (see table 1):
Table 1
Secondly, command manager obtains the pointer pointing to protocol analysis class interface by CCarCmdParserObj object, and utilizes this pointer to call corresponding interface and carry out resolve command. Such as, by calling interface SetPOSReport in command manager in Fig. 2, package according to agreement, and the bag organized is set to the order buffer zone of protocol analysis class. The form of order buffer zone is as follows:
Buffer zone structure is such as following table 2:
Table 2
PData points to the first address of data, and data buffer, at packing order agreement distribute, discharges in analysis structure function. BufSize indicates the byte number of data.
Article one, order can have multiple order data buffer zone. The data of each buffer zone can be sent respectively by command manager.
The m_pCmdBuf of CcarCmdParser carries m_nCmdBufNum tCmdBuffer buffer zone.
TCmdBuffer*m_pCmdBuf;
Size_tm_nCmdBufNum;
The C++ pseudo-code arranging buffer zone is as follows:
Should be noted that, the life cycle of buf must be consistent with the life cycle of CcarCmdParser, namely the internal memory space of buf must exist during CCarCmsParser object exists, and discharges the buffer zone of buf by the analysis structure function in the derived class of CCarCmdParser. Static array can also be used to make buf, and using it as class member's function, so just without the problem of pipe distribution and releasing memory.
Finally, command manager obtains data from the buffer zone of protocol analysis class to carry out doing further process, and utilizes CCarCmdParserObj to analyse structure function and discharge the internal memory distributing to protocol analysis object.
The idiographic flow of described parsing uplink message is:
After item object program receives uplink message, in the upper row data treater of project, definition generates the local object of protocol analysis class CCarCmdParserObj automatically;Automatically generate protocol analysis class CarCmdParserObj and utilize structure function, obtain interface by agreement type name from the map table protocol analysis factory class CarCmdFactory and create corresponding protocol analysis class;
Upper row data treater obtains, by automatically generating protocol analysis class CCarCmdParserObj object, the pointer pointing to protocol analysis class interface, and utilizes this pointer to call corresponding interface and carry out analytic message;
Finally, utilize generation protocol analysis class CCarCmdParserObj automatically to analyse structure function and discharge the internal memory distributing to protocol analysis object.
In a word, factory's class of the present invention is the instantiation of unified management object, and its principle is that the establishment of object is concentrated on a place (in factory), when increasing new object type, it is only necessary to change factory method. Use factory's class can bring bigger extensibility and as far as possible few amendment amount to system.
Loki storehouse is that the method based on strategy realizes, it adopts the mode of template to achieve a lot of Design Modes, such as monomer pattern, strategy pattern, visitor etc., wherein the feature of singleton pattern (i.e. monomer pattern) is the unique instance allowing class self preserve it, and do not allow to create other example, namely guarantee that a class only has an example in systems in which; In Loki storehouse, SingletonHolder class provides the support to Singleton pattern. Present invention utilizes monomer pattern.
In addition, factory of the present invention class utilizes this SingletonHolder class wrapper and becomes, mainly utilize singleton pattern, safeguard a unique instance in systems in which, each class of resolving is registered in the middle of this example, if any message to be resolved time, factory's class obtains corresponding class of resolving from this example according to protocol name and resolves, thus improves the programming efficiency of programming personnel.
The foregoing is only the better embodiment of the present invention, all impartial changes done according to the present patent application patent scope, with modifying, all should belong to the covering scope of the present invention.
Claims (5)
1. one kind realizes the method for packet parsing based on factory's class, it is characterized in that: described method utilizes the monomer pattern in loki storehouse to realize factory's class, and described factory class comprises: protocol analysis factory class CarCmdFactory, automatically generation protocol analysis class CCarCmdParserObj and protocol analysis base class CCarCmdParser;
Described protocol analysis factory class CarCmdFactory dynamically creates corresponding protocol analysis object according to terminal agreement title; Described automatic generation protocol analysis class CCarCmdParserObj is by creating corresponding protocol analysis object to protocol analysis factory class CarCmdFactory specified protocol name, and returning an object value interface pointer; And also it is responsible for the internal memory release of protocol analysis object; Described protocol analysis base class CCarCmdParser provides various public interface; Adjust user without the need to calling concrete protocol analysis class, as long as calling this protocol analysis base class;
Described factory class safeguards a unique instance in the project, is registered in the middle of this example by each protocol analysis class, and when there being message to be resolved, described factory class obtains corresponding protocol analysis class from described example according to protocol name and resolves.
2. a kind of method realizing packet parsing based on factory's class according to claim 1, it is characterised in that: described method is further specifically: line command is with, before parsing uplink message, first increasing a concrete protocol analysis class under treatment;
This concrete protocol analysis class need to be inherited in described protocol analysis base class CCarCmdParser, and wherein each concrete protocol analysis class all to be inherited such;
The function of protocol analysis base class CCarCmdParser is to provide various public interface, and this public interface comprises: uplink message resolves interface Parser () and down order resolves interface SetPosReport (); Adjust user when calling each interface, it is not necessary to call concrete protocol analysis class, as long as calling this protocol analysis base class CCarCmdParser;
Protocol analysis class has realized, then by corresponding registration interface, this parsing class is registered in protocol analysis factory class CarCmdFactory;
Factory's class safeguards a unique instance in the project, is registered in the middle of this example by each protocol analysis class, and when there being message to be resolved, described factory class obtains corresponding protocol analysis class from described example according to protocol name and resolves.
3. a kind of method realizing packet parsing based on factory's class according to claim 2, it is characterised in that: the described mode of registering this parsing class being registered in protocol analysis factory class CarCmdFactory by corresponding registration interface as: the main function of described protocol analysis factory class CarCmdFactory is to provide two interfaces: one, be that the information of each protocol analysis class is registered to inside a map table; This information: agreement title and the concrete protocol analysis object interface of establishment; Two, it is create protocol analysis object, namely utilizes agreement title to obtain the corresponding concrete protocol analysis object interface of establishment from map table, and create protocol analysis object by this interface.
4. a kind of method realizing packet parsing based on factory's class according to claim 3, it is characterised in that: the flow process of described process down order is specially:
After in project, program receives order, in command manager, definition generates the local object of protocol analysis class CCarCmdParserObj automatically; Automatically generate protocol analysis class CarCmdParserObj and utilize structure function, obtain interface by agreement type name from the map table protocol analysis factory class CarCmdFactory and create corresponding protocol analysis class;
Automatically generate protocol analysis class CCarCmdParserObj and three functions are mainly provided, one is utilize structure function with passing the agreement name parameter of coming in, by creating corresponding protocol analysis object to protocol analysis factory class CarCmdFactory specified protocol name, two is the pointer returning and pointing to each protocol analysis object, return of value type is CCarCmdParser, and three is the internal memory being discharged protocol analysis object by analysis structure function;
Command manager obtains, by automatically generating protocol analysis class CCarCmdParserObj object, the pointer pointing to protocol analysis class interface, and utilizes this pointer to call corresponding interface and carry out resolve command; By calling interface SetPOSReport in command manager, package according to agreement, and the bag organized is set to the order buffer zone of protocol analysis class;
Finally, command manager obtains data from the buffer zone of protocol analysis class to carry out doing further process, and utilizes CCarCmdParserObj to analyse structure function and discharge the internal memory distributing to protocol analysis object.
5. a kind of method realizing packet parsing based on factory's class according to claim 3, it is characterised in that: the idiographic flow of described parsing uplink message is:
After item object program receives uplink message, in the upper row data treater of project, definition generates the local object of protocol analysis class CCarCmdParserObj automatically;Automatically generate protocol analysis class CarCmdParserObj and utilize structure function, obtain interface by agreement type name from the map table protocol analysis factory class CarCmdFactory and create corresponding protocol analysis class;
Upper row data treater obtains, by automatically generating protocol analysis class CCarCmdParserObj object, the pointer pointing to protocol analysis class interface, and utilizes this pointer to call corresponding interface and carry out analytic message;
Finally, utilize generation protocol analysis class CCarCmdParserObj automatically to analyse structure function and discharge the internal memory distributing to protocol analysis object.
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Application publication date: 20160615 |