CN101673217B - Method for realizing remote program call and system thereof - Google Patents
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- CN101673217B CN101673217B CN 200910091522 CN200910091522A CN101673217B CN 101673217 B CN101673217 B CN 101673217B CN 200910091522 CN200910091522 CN 200910091522 CN 200910091522 A CN200910091522 A CN 200910091522A CN 101673217 B CN101673217 B CN 101673217B
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Abstract
The invention discloses a method for realizing remote program call. The method comprises the steps: a customer terminal searches a call result of a remote program which needs to be called in a preset memory area, and if so, transmits information of the remote program and a first check value of the call result previously counted according to a check algorithm to a server; and the server locally calls the remote program according to the information of the remote program to obtain a local call result, counts a second check value of the local call result with the check algorithm, judges whether the second check value is identical to the first check value, if so, returns unexpired information to the customer terminal so that the customer terminal directly uses the searched call result in the memory area, and if not, returns the local call result to the customer terminal so that the customer terminal uses the returned call result returned by the server. The method can guarantee the customer terminal to use the effective data. The invention further discloses a system for realizing the remote program call.
Description
Technical field
The present invention relates to the network communications technology, particularly relate to a kind of method and system of realizing remote program call.
Background technology
Under the environment that network distribution type calculates, operate in a program on the computing machine and need to call the subroutine that operates on the other computing machine, this process is called as remote program call.Referring to Fig. 1, the computing machine at the program place that general initiation is called is called as client, and the computing machine at the long-range place of invoked son is called as server.
Common program all exists a class need to repeatedly be called and return the far-end program that next data volume can be larger.Such as: point-of-sale terminal program needs the commodity stocks status inquiry program on the frequent invoking server, to obtain the inventory information of commodity.The far-end program of repeatedly calling for this class, the time of its program operation has been difficult to reduce, the time of finally calling the result in order to reduce the client acquisition so, the efficient of raising remote program call just must reduce the data transmission period from the server to client end.
For the far-end program of repeatedly calling, repeatedly transmit at two intercomputers for fear of identical data, reduction is from the data transmission period of server to client end, an effective way is to do a buffer memory in client, the result that calls to the far-end program is preserved, if also need to call same far-end program next time, just directly utilize the result who preserved last time, need not again download corresponding data from server again, improve like this operational efficiency of program.But there is drawback in this way, and that is exactly that the possibility of result of buffer memory is expired, can not the slice-of-life situation, such as above-mentioned commodity stocks status inquiry program, because commodity stocks dynamically updates, the result who keeps in the buffer memory often can be expired.Therefore for the far-end program that requirement of real-time is arranged, only adopt simple buffer memory not meet the demands.
Use expired data for fear of client, present solution is: data cached valid period is set, and client is called the result to this and is set a valid period the calling the result and put into buffer memory of far-end program the time.When client need to be called the far-end program, directly search this buffer memory, if can from buffer memory, find and call the result, so just according to the valid period of setting judge buffer memory whether call the result expired, if expired then again from server, call the far-end program and obtain up-to-date data, utilize the new result that calls to upgrade legacy data in the buffer memory, and correspondingly reset valid period.
Yet prior art utilizes the method for valid period still can make client use expired data.This be because, in data that client sets in valid period, variation has probably occured in the data of far-end program on the server, and client only had data after valid period, just can again download and buffer memory is up-to-date calls result data, thereby can't guarantee that fundamentally client uses active data.
Further, utilize the method for valid period for prior art, after the valid period that client sets, the data of far-end program might not change yet on the server, but client after valid period has crossed, the downloading data from the server that just is bound to again, thus so that carried out the operation that the result is called in meaningless transmission between client and the server, and client executing call result's operation in the meaningless renewal buffer memory, thereby greatly reduce service feature.
Summary of the invention
The present invention proposes a kind of method and system of realizing remote program call, can guarantee client use active data.
In order to achieve the above object, technical scheme of the present invention is achieved in that
A kind of method that realizes remote program call, the method comprises:
Client is searched the result that calls of the far-end program that need call in the memory block that sets in advance;
If find, then the information of described far-end program and this first proof test value that calls the result of calculating according to checking algorithm are in advance sent to server;
Server calls the far-end program according to information this locality of described far-end program, obtain this locality and call the result, use checking algorithm to calculate the second proof test value that the result is called in this locality, judge whether the second proof test value is identical with the first proof test value, if identical, then return not out of date information to client, client is directly used the result that calls who finds in the memory block; If different, then the result to be called in this locality and return to client, client is used the result that calls that server returns.
Better, the method further comprises:
If described client does not find the described result of calling in the memory block, the described far-end program of far call from the server then, the result that calls that server is returned is kept in the described memory block, and calculate the proof test value that this calls the result according to checking algorithm, this proof test value is kept in the described memory block.
Particularly, describedly will call the step that result and proof test value be kept in the memory block and comprise: utilize the title of described far-end program and the functional operation that call parameters is carried out appointment, obtain index value, take this index value as index, with server return call the result and this proof test value that calls the result is kept in the described memory block;
The described step of calling the result of searching the far-end program that need call comprises: the title of the far-end program that utilization need be called and call parameters are carried out the functional operation of appointment, obtain index value, and searching in the memory block with this index value is the result that calls of index.
Particularly, described step from not out of date information to client that return comprises: server returns to client and calls response message, and the value of the expired sign of data in this message is set to vacation, and return results is set in this message effectively for empty;
Describedly the step that the result returns to client is called in this locality comprise: server returns to client and calls response message, and the value of the expired sign of data in this message is set to very, and arranges in this message effectively that return results is that the result is called in described this locality.
Better, this locality is called after the result returns to client at described server, further comprise: described client utilizes that server returns calls the result that calls of far-end program described in the updated stored district as a result, and the result that calls who utilizes server to return calculates proof test value, utilizes the first proof test value in this proof test value updated stored district.
A kind of client, this client comprises: application program module, broker module and the memory block that is used for preserving each remote program call result;
Application program module be used for to be initiated the call request of far-end program, and the Receiving Agent program module is returned calls the result;
Broker module, be used for the request according to described application program module, in the memory block, search the result that calls of the far-end program that need call, if find, then the information of described far-end program and this first proof test value that calls the result of calculating according to checking algorithm are in advance sent to server, when receiving the not out of date information that server returns, the result that calls that directly will find from the memory block returns to described application program module; Receive that server returns call as a result the time, the result that calls that server is returned returns to described application program module.
Better, described broker module, be further used in the memory block, not finding described when calling as a result, initiate the request of the described far-end program of far call to server, the result that calls that server is returned is kept in the described memory block, and calculate the proof test value that this calls the result according to checking algorithm, this proof test value is kept in the described memory block.
Particularly, described broker module, be further used for utilizing that server returns calls the result that calls of far-end program described in the updated stored district as a result, the result that calls who utilizes server to return calculates proof test value, utilizes the first proof test value in this proof test value updated stored district;
With
The digest algorithm that described broker module utilization is preserved is carried out the processing that calculates the first proof test value that calls the result.
A kind of server, this server comprises:
Application programmer, according to the request of Agent device, the far-end program is called in this locality, obtains this locality and calls the result, the result is called in this this locality export to the Agent device;
The Agent device, be used for to receive the information of the far-end program that client sends and call the first proof test value of result, initiate the call request of far-end program to application programmer according to the far-end program information, the second proof test value of result is called in this locality that calculates application programmer output, judge that whether the second proof test value is identical with the first proof test value, if identical, then returns not out of date information to client, if different, then the result called in this locality and return to client.
Better, the digest algorithm that described Agent device utilization is preserved is carried out and is calculated the processing that the second proof test value of result is called in this locality.
As seen, the present invention has following advantage:
1, for the far-end program of repeatedly calling, the present invention finds in the memory block each time and calls after the result, the capital by client and server respectively according to self the as a result calculation check value of calling, if proof test value is consistent, consistent in result and the server of calling that keeps in the client then is described, it is effective that data in the client remain, client directly utilizes the result that effectively calls of preservation to get final product, if proof test value is inconsistent, inconsistent in result and the server of calling that keeps in the client then is described, data in the client are expired, the result that effectively calls that server is up-to-date returned to client and used again this moment, like this, for client call each time, can both guarantee fundamentally that client uses authentic and valid data.
2, in the present invention, if the proof test value that the proof test value that server calculates and client are calculated is inconsistent, inconsistent in result and the server of calling that keeps in the client then is described, data in the client are expired, in such cases, the present invention just can be between client and server again transmission call the result, client is just understood the former result of calling in the updated stored district, thereby avoided client and server in the prior art to carry out the shortcoming of meaningless operation, improved service feature.
3, in the present invention, can utilize the eap-message digest technology of comparative maturity to carry out the calculating of proof test value, because the eap-message digest technology just utilizes algorithm to calculate calling the result, to the far-end program of server side itself without any changing and processing, such as, need not may Update Table for each its colophon information of far-end program maintenance, therefore, reduced the workload of program development; For any one far-end program (even this far-end program has a plurality of Data Sources), owing to only need when utilizing the eap-message digest technology to call the result with utilization, and need not to utilize far-end program itself, therefore for the far-end program (even in this far-end program a plurality of Data Sources having been arranged) of any type, whether the data that also can judge exactly client are expired, thereby greatly increased the scope of application of the present invention.
4, in the present invention, search and call the result, calculate twin check value and information interaction by finishing respectively at the Agent of client and the setting of service area side, original application program need not to change in the client and server, thereby has reduced the software development and maintenance difficulty.
Description of drawings
Fig. 1 is the structural representation of customer end/server mode;
Fig. 2 is the process flow diagram of realizing remote program call in the one embodiment of the invention;
Fig. 3 is the structural representation of client in the one embodiment of the invention;
Fig. 4 is the structural representation of server in the one embodiment of the invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
The present invention proposes a kind of method that realizes remote program call, the method comprises: client is searched the result that calls of the far-end program that need call in the memory block that sets in advance; If find, then the information of described far-end program and this first proof test value that calls the result of calculating according to checking algorithm are in advance sent to server; Server calls the far-end program according to information this locality of described far-end program, obtain this locality and call the result, use checking algorithm to calculate the second proof test value that the result is called in this locality, judge whether the second proof test value is identical with the first proof test value, if identical, then return not out of date information to client, client is directly used the result that calls who finds in the memory block; If different, then the result to be called in this locality and return to client, client is used the result that calls that server returns.
As seen, for the far-end program of repeatedly calling, the present invention finds in the memory block each time and calls after the result, the capital by client and server respectively according to self the as a result calculation check value of calling, if proof test value is consistent, consistent in result and the server of calling that keeps in the client then is described, it is effective that data in the client remain, client directly utilizes the result that effectively calls of preservation to get final product, if proof test value is inconsistent, inconsistent in result and the server of calling that keeps in the client then is described, data in the client are expired, and the result that effectively calls that server is up-to-date returned to client and used again this moment, like this, for client call each time, can both guarantee fundamentally that client uses authentic and valid data.
In specific implementation of the present invention, checking algorithm can be selected any one algorithmic function commonly used.
Fig. 2 is the process flow diagram of realizing remote program call in the one embodiment of the invention.Referring to Fig. 2, in one embodiment of the invention, realize that the process of remote program call specifically may further comprise the steps:
Step 201: in client, create in advance the memory block of calling the result that is used for each far-end program of storage.
Step 202: when client need to be called a far-end program (being designated as far-end program 1), client was utilized the title of this far-end program 1 and the functional operation that call parameters is carried out appointment, obtains index value K.
Step 203: client is searched the remote program call result who whether has take index value K as index in the memory block, and if not, then execution in step 204, and if so, then execution in step 207.
Here, if not, namely do not find, represent that then current client is not also preserved it and called the result for the calling as calling first of far-end program 1, therefore, need to carry out the actual invoked procedure in the following step 204.If, namely find, then represent currently not to be to call first for calling of far-end program 1, client has been preserved it and has been called the result, therefore, need to carry out following step 207 and follow-up respective process judge current preservation whether call the result still effective.
Step 204: client is carried out existing remote program call process for far-end program 1, obtains the result that calls of far-end program 1 that server returns.
Step 205: the checking algorithm that the client utilization sets in advance calculates this proof test value that calls the result.
Step 206: the index value K that calculates in the step 202 is as index, with far-end program 1 call the result and this proof test value that calls the result is kept in the memory block, finish current flow process.
Here, preserve take index value K as index far-end program 1 call the result and this calls result's proof test value, be in order when again calling far-end program 1, to utilize index value K in the memory block, to find easily the result that calls of far-end program 1 follow-up.
In above step, be to utilize index value to be kept in the memory block calling result and proof test value, like this, also be to utilize same index value to search during follow-up searching.Utilizing the index value storage and searching is a kind of better implementation provided by the invention, in the realization of reality, also can utilize other modes to store and search, such as, in the memory block, set up far-end program identification and the corresponding relation that calls result and proof test value, during follow-up searching, need not to calculate, directly utilize the far-end program identification to search the corresponding result that calls.
Step 207: client is obtained the proof test value that calls the result take K as index (being designated as proof test value 1) in the memory block, the information of far-end program 1 and proof test value 1 is carried in the remote program call request sends to server.
Here, the information of far-end program 1 comprises sign and the call parameters of far-end program 1.
Step 208: server is according to the information of the far-end program 1 in the remote program call request, and far-end program 1 is called in this locality, obtains the result that calls of far-end program 1.
Step 209: the checking algorithm that server by utilizing sets in advance calculates the proof test value (being designated as proof test value 2) that gained calls the result, judges whether proof test value 2 is consistent with proof test value 1, and if so, then execution in step 210, otherwise, execution in step 212.
Need to prove, the employed checking algorithm of client and server is consistent, like this, if the data of the far-end program 1 of server side are not upgraded, that is to say, the result that calls of client storage does not have expired, so, the proof test value 2 that proof test value 1 and the server that client calculates calculates is exactly consistent, if the data of the far-end program 1 of server side are upgraded, that is to say, client storage to call the result expired, so, the proof test value 1 that calculates of client is just inconsistent with the proof test value 2 that server calculates.As seen, by whether consistent processing of proof test value in this step, just can judge client storage whether call the result expired.
Step 210: the expired sign of data that server calls in the response message is set to vacation, and arranges in this message effectively that then return results calls response message with this and send to client for empty.
Step 211: client reads that the data of calling in the response message are expired to be designated vacation, and what then directly will find in the memory block calls the result as the result that calls of this far-end program 1, finishes current flow process.
Step 212: the expired sign of data that server calls in the response message is set to very, and arranges in this message effectively that return results is the result that calls who obtains in the step 208, then this is called response message and sends to client.
Step 213: client read the data of calling in the response message expired be designated true, then will call carry in the response message call the result as the result that calls of this far-end program 1.
Step 214: the result that calls of far-end program 1 that calling of carrying in the response message preserve in the updated stored district is as a result called in the client utilization, simultaneously calculate the proof test value that calls the result that carries in the response message according to checking algorithm, utilize the proof test value 1 in this proof test value updated stored district.
Because when carrying out this step, far-end program 1 in the client stores district to call the result expired, therefore, in order to ensure the validity of calling the result of follow-up use, carry out and utilize the up-to-date result of calling that server sends and the corresponding data in the corresponding proof test value updated stored district in this step.
Need to prove that the checking algorithm that uses can be that any one commonly used can guarantee the not different algorithmic function of output valve simultaneously of input value in above-mentioned flow process shown in Figure 2.A kind of preferred mode is to utilize the digest algorithm in the ripe at present eap-message digest technology to be used as checking algorithm.Eap-message digest (Message Digest) technology is a kind of technology of comparative maturity, its ultimate principle is to utilize a hash (Hash) function, given arbitrary data piece is carried out computing, the Bit String (bit String) of a regular length of output.General this data block is called message (Message), the Bit String of Hash function output be called as this message eap-message digest (Message Digest) if. two piece of data possess same eap-message digest, just can assert that this two piece of data is on all four.Based on the These characteristics of eap-message digest technology, the present invention just can utilize the digest algorithm in the eap-message digest technology to be used as checking algorithm, calculates for the data of judging the client buffer memory expired proof test value whether.Digest algorithm specifically can be exemplified as MD5 algorithm or SHA algorithm.
In addition, the invention allows for a kind of client, referring to Fig. 3, this client comprises: application program module, broker module and the memory block that is used for preserving each remote program call result;
Application program module be used for to be initiated the call request of far-end program, and the Receiving Agent program module is returned calls the result;
Broker module, be used for the request according to described application program module, in the memory block, search the result that calls of the far-end program that need call, if find, then the information of described far-end program and this first proof test value that calls the result of calculating according to checking algorithm are in advance sent to server, when receiving the not out of date information that server returns, the result that calls that directly will find from the memory block returns to described application program module; Receive that server returns call as a result the time, the result that calls that server is returned returns to described application program module.
Situation about calling first for a far-end program, described broker module, be further used in the memory block, not finding described when calling as a result, initiate the request of the described far-end program of far call to server, the result that calls that server is returned is kept in the described memory block, and calculate the proof test value that this calls the result according to checking algorithm, this proof test value is kept in the described memory block.
Better, described broker module, be further used for utilizing that server returns calls the result that calls of far-end program described in the updated stored district as a result, the result that calls who utilizes server to return calculates proof test value, utilizes the first proof test value in this proof test value updated stored district.
When the calculation check value, described broker module specifically utilizes the digest algorithm of preservation to carry out the processing that calculates the first proof test value that calls the result.
In addition, the invention allows for a kind of server, referring to Fig. 4, this server comprises:
Application programmer, according to the request of Agent device, the far-end program is called in this locality, obtains this locality and calls the result, the result is called in this this locality export to the Agent device;
The Agent device, be used for to receive the information of the far-end program that client sends and call the first proof test value of result, initiate the call request of far-end program to application programmer according to the far-end program information, the second proof test value of result is called in this locality that calculates application programmer output, judge that whether the second proof test value is identical with the first proof test value, if identical, then returns not out of date information to client, if different, then the result called in this locality and return to client.
When the calculation check value, the digest algorithm that described Agent device utilization is preserved is carried out and is calculated the processing that the second proof test value of result is called in this locality.
Utilize content described above, can also be easy to obtain the system of calling the far-end program that the present invention proposes, comprise client and server in this system, have respectively any one or multiple function of client and server described above.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (8)
1. method that realizes remote program call is characterized in that the method comprises:
Client is searched the result that calls of the far-end program that need call in the memory block that sets in advance;
If find, then the information of described far-end program and this first proof test value that calls the result of calculating according to checking algorithm are in advance sent to server;
Server calls the far-end program according to information this locality of described far-end program, obtain this locality and call the result, use checking algorithm to calculate the second proof test value that the result is called in this locality, judge whether the second proof test value is identical with the first proof test value, if identical, then return not out of date information to client, client is directly used the result that calls who finds in the memory block; If different, then the result to be called in this locality and return to client, client is used the result that calls that server returns.
2. method according to claim 1 is characterized in that, the method further comprises:
If described client does not find the described result of calling in the memory block, the described far-end program of far call from the server then, the result that calls that server is returned is kept in the described memory block, and calculate the proof test value that this calls the result according to checking algorithm, this proof test value is kept in the described memory block.
3. method according to claim 2, it is characterized in that, describedly will call the step that result and proof test value be kept in the memory block and comprise: utilize the title of described far-end program and the functional operation that call parameters is carried out appointment, obtain index value, take this index value as index, with server return call the result and this proof test value that calls the result is kept in the described memory block;
The described step of calling the result of searching the far-end program that need call comprises: the title of the far-end program that utilization need be called and call parameters are carried out the functional operation of appointment, obtain index value, and searching in the memory block with this index value is the result that calls of index.
4. method according to claim 1, it is characterized in that, described step from not out of date information to client that return comprises: server returns to client and calls response message, and the value of the expired sign of data in this message is set to vacation, and return results is set in this message effectively for empty;
Describedly the step that the result returns to client is called in this locality comprise: server returns to client and calls response message, and the value of the expired sign of data in this message is set to very, and arranges in this message effectively that return results is that the result is called in described this locality.
5. the described method of any one in 4 according to claim 1, it is characterized in that, this locality is called after the result returns to client at described server, further comprise: described client utilizes that server returns calls the result that calls of far-end program described in the updated stored district as a result, and the result that calls who utilizes server to return calculates proof test value, utilizes the first proof test value in this proof test value updated stored district.
6. a system that realizes remote program call is characterized in that, this system comprises:
Be used for searching in the memory block that sets in advance the device that calls the result of the far-end program that need call in the client;
In the client, if find then the information of described far-end program and this first proof test value that calls the result of calculating according to checking algorithm are in advance sent to the device of server;
Be used in the server calling the far-end program according to information this locality of described far-end program, obtain the device that the result is called in this locality;
Be used in the server using checking algorithm to calculate the device that the second proof test value of result is called in this locality;
Be used for judging whether the second proof test value is identical with the first proof test value, if identical, then returns not out of date information to client in the server, if different, then this locality called the device that the result returns to client;
Be used in the client directly using that the memory block finds calls result or the device that calls the result that uses server to return.
7. system according to claim 6 is characterized in that, this system further comprises:
Be used for not finding in the memory block described when calling as a result in the client, initiate the request of the described far-end program of far call to server, the result that calls that server is returned is kept in the described memory block, and calculate the proof test value that this calls the result according to checking algorithm, this proof test value is kept at device in the described memory block.
8. according to claim 6 or 7 described systems, it is characterized in that this system further comprises:
Be used in the client utilizing that server returns calls the result that calls of far-end program described in the updated stored district as a result, the result that calls who utilizes server to return calculates proof test value, utilizes the device of the first proof test value in this proof test value updated stored district.
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| CN104142856B (en) * | 2013-05-07 | 2018-08-14 | 华为技术有限公司 | Service routine call method, system and its smart machine |
| CN105847102B (en) * | 2016-04-29 | 2020-11-24 | 珠海格力智能装备技术研究院有限公司 | Method, equipment and system for realizing field bus communication |
| CN109447758B (en) * | 2018-11-02 | 2021-07-06 | 北京汉迪移动互联网科技股份有限公司 | Method and related apparatus for in-application purchasing |
| CN111158777B (en) * | 2019-12-12 | 2023-10-27 | 中移（杭州）信息技术有限公司 | Component calling method, device and computer readable storage medium |
| CN111611277A (en) * | 2020-04-11 | 2020-09-01 | 上海淇玥信息技术有限公司 | Method and device for calling financial data through multi-path routing and electronic equipment |
| CN112241328B (en) * | 2020-09-10 | 2024-01-23 | 长沙市到家悠享网络科技有限公司 | Data processing method, device and system |
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| CN101459516A (en) * | 2009-02-20 | 2009-06-17 | 浙江工业大学 | Dynamic password safe login method |
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