CN103020751A - Method and system for determining improvement workload of application system in IPv6 (Internet Protocol Version 6) environment - Google Patents
Method and system for determining improvement workload of application system in IPv6 (Internet Protocol Version 6) environment Download PDFInfo
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- CN103020751A CN103020751A CN2012104756396A CN201210475639A CN103020751A CN 103020751 A CN103020751 A CN 103020751A CN 2012104756396 A CN2012104756396 A CN 2012104756396A CN 201210475639 A CN201210475639 A CN 201210475639A CN 103020751 A CN103020751 A CN 103020751A
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Abstract
The invention discloses a method for determining the improvement workload of an application system in an IPv6 (Internet Protocol Version 6) environment, which comprises the following steps of: acquiring the framework of the configuration environment of the application system which needs to be improved, and determining the improvement workload of the configuration environment of the application system according to the framework of the configuration environment; acquiring the code of the application system, and determining the improvement workload of the code line of the application system according to the code; and acquiring the improvement workload of the application system according to the improvement workload of configuration environment and the improvement workload of the code line. The invention also correspondingly provides a system for determining the improvement workload of the application system in the IPv6 environment. The method disclosed by the invention determines the improvement workload by separating the application system which needs to be improved into two parts, namely the configuration environment and the code line, and can accurately determine the improvement workload of the application system aiming at the characteristics of the IPv6 network environment.
Description
Technical field
The present invention relates to software development workload estimate estimation field, particularly relate to application system retrofit work method for determination of amount under a kind of IPv6 environment, and application system retrofit work amount fixed system really under a kind of IPv6 environment.
Background technology
Along with developing rapidly of internet, the limited address space of IPv4 definition is with depleted, and the deficiency of address space will hinder further developing of internet.In order to enlarge address space, IPv6(Internet Protocolversion 6) is designated as the Next Generation Internet protocol version of IPv4 agreement, in " 2012 global IPv 6s and Next Generation Internet summit meeting ", National Development and Reform Committee, Ministry of Industry and Information jointly announce will start in 2012 Next Generation Internet IPv6 comprehensively and build.
In IPv6 development and construction process, will certainly relate to the transformation of application system, and retrofit work amount definite will directly have influence on the tolerance of project migration cycle and improvement cost, the calculating of retrofit work amount is also become most important; But traditional workload evaluation method more relates to the workload estimation of software development, therefore needs the accurate calculation technology for IPv6 net environment application system retrofit work amount badly.
Summary of the invention
Based on this, the workload that the invention provides application system transformation under a kind of IPv6 environment is determined method and system, can for the characteristic of IPv6 network environment, precisely determine the retrofit work amount of application system.
Application system retrofit work method for determination of amount comprises the steps: under a kind of IPv6 environment
Obtain the framework of the configuration surroundings of the application system that needs transformation, determine the retrofit work amount of the configuration surroundings of described application system according to the framework of described configuration surroundings;
Obtain the code of described application system, determine the retrofit work amount of the code line of described application system according to described code;
According to the retrofit work amount of described configuration surroundings and the retrofit work amount of described code line, determine the retrofit work amount of application system.
Application system retrofit work amount fixed system really comprises the first acquisition module, the second acquisition module and determination module under a kind of IPv6 environment;
Described the first acquisition module is used for obtaining the framework of the configuration surroundings that needs the application system transformed according to the framework of described configuration surroundings, determines the retrofit work amount of the configuration surroundings of described application system;
Described the second acquisition module is used for obtaining the code of described application system, determines the retrofit work amount of the code line of described application system according to described code;
Described determination module is used for according to the retrofit work amount of described configuration surroundings and the retrofit work amount of described code line, determines the retrofit work amount of application system.
Application system retrofit work method for determination of amount and system under the above-mentioned IP v6 environment, characteristics according to the IPv6 network environment, the application system of need transformation is decomposed into configuration surroundings and code line two parts are determined the retrofit work amount, result of calculation is accurately reliable, has widely reference significance.
Description of drawings
Fig. 1 is application system retrofit work method for determination of amount schematic flow sheet in one embodiment under the IPv6 environment of the present invention.
Fig. 2 is application system retrofit work amount fixed system structural representation in one embodiment really under the IPv6 environment of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail, but embodiments of the present invention are not limited to this.
This method is about move to the estimation of application system retrofit work amount the IPv6 network environment from the IPv4 network environment, as shown in Figure 1, is application system retrofit work method for determination of amount schematic flow sheet in one embodiment under the IPv6 environment of the present invention, comprising:
S11, obtain the framework of the configuration surroundings of the application system of need transforming, according to the framework of described configuration surroundings, determine the retrofit work amount of the configuration surroundings of described application system;
Application system is in IPv4 to IPv6 transition process, and at first the transformation with application system is decomposed into two parts, i.e. the code line of configuration surroundings and associated the Internet protocol; First is the transformation of configuration surroundings, obtains the framework of the configuration surroundings of the application system that needs transformation, determines the retrofit work amount of configuration surroundings; In a preferred embodiment, described configuration surroundings comprises operating system, intermediate module and database.
In a preferred embodiment, can obtain according to following formula the retrofit work amount of described configuration surroundings:
Wherein, PM
1Retrofit work amount for described configuration surroundings; I=1 represents that operating system, i=2 represent intermediate module, and i=3 represents database; c
iBe groundwork amount, p
jBe personnel's capacity factor; s
jFor personnel make great efforts coefficient, personnel make great efforts coefficient, because project is generally participated in together by n people, can try to achieve by the algorithm method of average personnel's integration capability coefficient of average level, namely
N is for participating in personnel's number of transformation; m
iBe the reusable coefficient; r
iBe risk factor.
The transformation of configuration surroundings comprises carries out the relevant configuration transformation to operating system, middleware, three basic platform running environment of database, configure for running environment, operating process is relatively fixing, each configuration item has a groundwork amount under standard environment, and will consider that in layoutprocedure personnel ability's situation, personnel make great efforts the multifactorial impacts such as situation, the reusable factor and risks and assumptions.Relevant concrete configuration item information when application system is transformed under the IPv6 is as shown in table 1, can clearly calculate concrete configuration content and the computation process of the retrofit work amount of configuration surroundings by this table;
The relevant concrete configuration item information of table 1 running environment
Index of correlation is explained in the table 1:
1. groundwork amount: because the method for operating of running environment configuration is relatively fixing, each configuration item can corresponding groundwork amount under standard environment;
2. personnel ability's coefficient and make great efforts coefficient: personnel ability and level of effort directly have influence on efficient and the workload of configuration, can be divided into three kinds of common engineering teacher, intermediate slip-stick artist and senior engineers by different abilities in the present embodiment, according to COCOMOII(Constructive Cost Model, Constructive cost model) model, personnel ability's coefficient can be made as respectively 1.34,1.15 and 0.88 from low to high in the present embodiment; By level of effort can be divided into actively, mediocre and passive three kinds, making great efforts coefficient can be according to being made as respectively from low to high 1.2,1.0 and 0.8 in various degree;
3. reusable coefficient: whether configuration surroundings has precedent, according to the COCOMOII model, according to the reusable degree from low to high respectively assignment be 0.8,0.6,0.4 and 0.2;
4. risk factor: layoutprocedure may run into the size of risk, and can compose respectively from big to small is 1.2,1.1,1.0.
S12, obtain the code of described application system, determine the retrofit work amount of the code line of described application system according to described code, in a preferred embodiment, can determine according to following formula the retrofit work amount of described code line:
PM
2＝A×Size
E×EM；
Wherein, PM
2Be the retrofit work amount of described code line, A is correction factor, and Size transforms size of code for needing, and E is scale economics sex index variable, and EM is that cost drives factor score;
The described computing formula that needs to transform size of code is: Size=increases size of code * COD newly
1+ modification size of code * COD
2Wherein, COD
1Be the degree-of-difficulty factor of newly-increased code, COD
2For revising the degree-of-difficulty factor of code;
The computing formula of described scale economics sex index variable is:
Wherein, SF
iFor being the summation of scale degree factor score.
What the present invention will consider is to using the calculating of system reform workload, can not calculating it with common software development estimate method.For this class maintenance type project, Boehm proposed the COCOMO II model based on lines of code in 1994, and it has become in the world and to use the most accurately one of model of the most extensive, estimation at present.Therefore the calculating to IPv6 network environment application layer protocol retrofit work amount can be with reference to the maintenance type project work amount appraising model of COCOMOII, the rear computing formula that is improved, that is:
PM
2＝A×Size
E×EM； （1）
In the formula (1), PM
2Be the retrofit work amount (man month) of described code line;
A is correction factor, and default value is 2.5, can be according to the project reality adjustment;
Size transforms size of code for needing, and computing formula is: Size=increases size of code * COD newly
1+ modification size of code * COD
2Newly-increased size of code and modification size of code can be decided by foundation code row/interface protocol and interface protocol number; Wherein, COD
1Be the degree-of-difficulty factor of newly-increased code, COD
2For revising the degree-of-difficulty factor (COD of code
1〉=COD
2〉=1);
Code line to associated the Internet protocol in the application system is transformed, mainly be to be transitioned into the procotol that IPv6 need to revise about IPv4, such as TCP/UDP, SMTP/POP3, FTP, SNMP, Telnet, RIP, NFS and DNS etc., consider the convenience of statistics codes line number, fixing foundation code row based on each interface protocol correspondence, therefore can transform the reference table method by following code and carry out the code line statistics, so that express statistic retrofit work amount.Revise and newly-increased two kinds of situations in view of existing in the code line transformation process, but difficulty is different, therefore, this method will be revised and newly-increased code line is separately considered, can easily obtain the actual scale that code line is transformed.Concrete data in the in the present embodiment code transformation reference table can be as shown in table 2.
Table 2 code is transformed reference table
Index of correlation is explained in the table 2:
1. degree-of-difficulty factor (COD): each procotol code is being revised and is being showed various degrees of difficulty when newly-increased, and the degree-of-difficulty factor when newly-increased generally speaking can be a bit larger tham the degree-of-difficulty factor when revising;
2. foundation code row/interface protocol: the foundation code line number that each interface protocol is corresponding, unit: KLOC;
3. interface protocol number: concrete numerical value can be estimated by 3 technology laws.
In the formula (1), E is scale economics sex index variable, and computing formula is:
E has reflected the economical efficiency of scale of project, when its gathering way greater than the gathering way of software size (Size) of required workload (PM) greater than 1 time, embodies the scale non-Economy.Otherwise E is less than 1 expression economical efficiency of scale; Wherein, SF
iSummation for the factor score of scale degree; In the present embodiment, scale degree factor pair answer score value can be as shown in table 3:
Table 3 scale degree factor score table
EM is that cost drives factor score, is the product that 17 costs drive factor score in the present embodiment, and the grade score that each cost driving factor pair is answered is as shown in table 4:
Table 4 cost drives the grade Score Lists of the factor
In the formula (1), the COCOMOII model after the improvement has added degree-of-difficulty factor COD(The Coefficient OfDifficulty in the statistics of code line), like this to code quantitative statistics science more; In addition, also considered the economical efficiency of scale (E: the index variable), when its gathering way greater than the gathering way of software size (Size) of required workload (PM) greater than 1 time, can embody the scale non-Economy of project.By above-mentioned formula (1), table 2, table 3 and table 4 can be clearly concrete reforming content and corresponding retrofit work amount computation process.
S13, according to the retrofit work amount of described configuration surroundings and the retrofit work amount of described code line, determine the retrofit work amount of application system; The retrofit work amount of the configuration surroundings that obtains according to step S11, and the retrofit work amount of the code line that obtains of step S12, the retrofit work amount of the system that is applied;
In a preferred embodiment, after the step of the retrofit work amount of described definite application system is specially retrofit work amount with described configuration surroundings and adds the retrofit work amount of the above code line, multiply by again the retrofit work amount that default correction factor obtains described application system;
The application system transformation mainly is made of application layer environmental reconstruction and application layer protocol transformation two parts under the IPv6 environment; Therefore the appraising model of application program transformation amount of work can be expressed as under the IPv6:
PM＝(PM
1+PM
2)×σ；
Wherein, PM is the retrofit work amount of described application system, PM
1Retrofit work amount for described configuration surroundings; PM
2Retrofit work amount for described code line; σ is described correction factor;
For the difference of different system, the correction factor of employing B/S and C/S is adjusted the retrofit work amount of two kinds of frameworks, and correction factor can draw by historical experience; Because the basic data of COCOMOII model mostly is based on the C/S framework, the correction factor that the correction factor of the application system of C/S framework can be the application system of 1, B/S framework can be 1.01.
Accordingly, the present invention also provides under a kind of IPv6 environment really fixed system of application system retrofit work amount; As shown in Figure 2, comprise the first acquisition module 21, the second acquisition module 22 and determination module 23;
Described the first acquisition module 21 according to the framework of described configuration surroundings, is determined the retrofit work amount of the configuration surroundings of described application system for the framework of the configuration surroundings that obtains the application system that needs transformation;
Application system is in IPv4 to IPv6 transition process, and at first the transformation with application system is decomposed into two parts, i.e. the code line of configuration surroundings and associated the Internet protocol; First is the transformation of configuration surroundings,, obtain the framework of the configuration surroundings of the application system of need transforming, determine the retrofit work amount of configuration surroundings; In a preferred embodiment, described configuration surroundings comprises operating system, intermediate module and database;
In a preferred embodiment, can calculate according to following formula the retrofit work amount of described configuration surroundings:
Wherein, PM
1Retrofit work amount for described configuration surroundings; I=1 represents that operating system, i=2 represent intermediate module, and i=3 represents database; c
iBe groundwork amount, p
jBe personnel's capacity factor; s
jFor personnel make great efforts coefficient, personnel make great efforts coefficient, because project is generally participated in together by n people, can try to achieve by the algorithm method of average personnel's integration capability coefficient of average level, namely
N is for participating in personnel's number of transformation; m
iBe the reusable coefficient; r
iBe risk factor.
Described the second acquisition module 22 is used for obtaining the code of described application system, determines the retrofit work amount of the code line of described application system according to described code;
Application system retrofit work amount also comprises the determining of code line retrofit work amount, in a preferred embodiment, determines the retrofit work amount of described code line according to following formula:
PM
2＝A×Size
E×EM；
Wherein, PM
2Be the retrofit work amount of described code line, A is correction factor, and Size transforms size of code for needing, and E is scale economics sex index variable, and EM is that cost drives factor score;
The described computing formula that needs to transform size of code is: Size=increases size of code * COD newly
1+ modification size of code * COD
2Wherein, COD
1Be the degree-of-difficulty factor of newly-increased code, COD
2For revising the degree-of-difficulty factor of code;
The computing formula of described scale economics sex index variable is:
Wherein, SF
iFor being the summation of scale degree factor score.
Described determination module 23 is used for according to the retrofit work amount of described configuration surroundings and the retrofit work amount of described code line, the retrofit work amount of computing application system; In a preferred embodiment, described the 3rd computing module 23 multiply by the retrofit work amount that default correction factor obtains described application system after specifically adding the retrofit work amount of the above code line for the retrofit work amount with described configuration surroundings again;
The application system transformation mainly is made of application layer environmental reconstruction and application layer protocol transformation two parts under the IPv6 environment; Therefore the appraising model of application program transformation amount of work can be expressed as under the IPv6:
PM＝(PM
1+PM
2)×σ；
Wherein, PM is the retrofit work amount of described application system, PM
1Retrofit work amount for described configuration surroundings; PM
2Retrofit work amount for described code line; σ is described correction factor;
For the difference of different system, the correction factor of employing B/S and C/S is adjusted the retrofit work amount of two kinds of frameworks, and correction factor can draw by historical experience; Because the basic data of COCOMOII model mostly is based on the C/S framework, the correction factor that the correction factor of the application system of C/S framework can be the application system of 1, B/S framework can be 1.01.
Application system retrofit work method for determination of amount and system under the IPv6 environment of the present invention, characteristics according to the IPv6 network environment, the application system of need transformation is decomposed into configuration surroundings and code line two parts are determined the retrofit work amount, result of calculation is accurately reliable, has widely reference significance.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. application system retrofit work method for determination of amount under the IPv6 environment is characterized in that, comprises the steps:
Obtain the framework of the configuration surroundings of the application system that needs transformation, determine the retrofit work amount of the configuration surroundings of described application system according to the framework of described configuration surroundings;
Obtain the code of described application system, determine the retrofit work amount of the code line of described application system according to described code;
According to the retrofit work amount of described configuration surroundings and the retrofit work amount of described code line, determine the retrofit work amount of application system.
2. application system retrofit work method for determination of amount under the IPv6 environment according to claim 1 is characterized in that, the framework of described configuration surroundings comprises operating system, intermediate module and database.
3. application system retrofit work method for determination of amount under the IPv6 environment according to claim 2 is characterized in that, determines the retrofit work amount of described configuration surroundings according to following formula:
Wherein, PM
1Retrofit work amount for described configuration surroundings; I=1 represents that operating system, i=2 represent intermediate module, and i=3 represents database; c
iBe groundwork amount, p
jBe personnel's capacity factor; s
jFor personnel make great efforts coefficient; N is for participating in personnel's number of transformation; m
iBe the reusable coefficient; r
iBe risk factor.
4. application system retrofit work method for determination of amount under the IPv6 environment according to claim 1 is characterized in that, determines the retrofit work amount of described code line according to following formula:
PM
2＝A×Size
E×EM；
Wherein, PM
2Be the retrofit work amount of described code line, A is correction factor, and Size transforms size of code for needing, and E is scale economics sex index variable, and EM is that cost drives factor score;
The described computing formula that needs to transform size of code is: Size=increases size of code * COD newly
1+ modification size of code * COD
2Wherein, COD
1Be the degree-of-difficulty factor of newly-increased code, COD
2For revising the degree-of-difficulty factor of code;
The computing formula of described scale economics sex index variable is:
Wherein, SF
iFor being the summation of scale degree factor score.
5. application system retrofit work method for determination of amount under the IPv6 environment according to claim 1, it is characterized in that, after the step of the retrofit work amount of described definite application system is specially retrofit work amount with described configuration surroundings and adds the retrofit work amount of the above code line, multiply by again the retrofit work amount that default correction factor obtains described application system.
6. application system retrofit work amount fixed system really under the IPv6 environment is characterized in that, comprises the first acquisition module, the second acquisition module and determination module;
Described the first acquisition module is determined the retrofit work amount of the configuration surroundings of described application system for the framework of the configuration surroundings that obtains the application system that needs transformation according to the framework of described configuration surroundings;
Described the second acquisition module is used for obtaining the code of described application system, determines the retrofit work amount of the code line of described application system according to described code;
Described determination module is used for according to the retrofit work amount of described configuration surroundings and the retrofit work amount of described code line, determines the retrofit work amount of application system.
7. application system retrofit work amount fixed system really under the IPv6 environment according to claim 6 is characterized in that, the framework of configuration surroundings comprises operating system, intermediate module and database described in described the first acquisition module.
8. application system retrofit work amount fixed system really under the IPv6 environment according to claim 7 is characterized in that, described the first acquisition module specifically is used for determining according to following formula the retrofit work amount of described configuration surroundings:
Wherein, PM
1Retrofit work amount for described configuration surroundings; I=1 represents that operating system, i=2 represent intermediate module, and i=3 represents database; c
iBe groundwork amount, p
jBe personnel's capacity factor; s
jFor personnel make great efforts coefficient; N is for participating in personnel's number of transformation; m
iBe the reusable coefficient; r
iBe risk factor.
9. application system retrofit work amount fixed system really under the IPv6 environment according to claim 6 is characterized in that, described the second acquisition module specifically is used for determining according to following formula the retrofit work amount of described code line:
PM
2＝A×Size
E×EM；
Wherein, PM
2Be the retrofit work amount of described code line, A is correction factor, and Size transforms size of code for needing, and E is scale economics sex index variable, and EM is that cost drives factor score;
The described computing formula that needs to transform size of code is: Size=increases size of code * COD newly
1+ modification size of code * COD
2Wherein, COD
1Be the degree-of-difficulty factor of newly-increased code, COD
2For revising the degree-of-difficulty factor of code;
The computing formula of described scale economics sex index variable is:
Wherein, SF
iFor being the summation of scale degree factor score.
10. application system retrofit work amount fixed system really under the IPv6 environment according to claim 6, it is characterized in that, described determination module multiply by the retrofit work amount that default correction factor obtains described application system after specifically adding the retrofit work amount of the above code line for the retrofit work amount with described configuration surroundings again.
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