CN105868029A - Consistency fault-tolerance processing method and system - Google Patents
Consistency fault-tolerance processing method and system Download PDFInfo
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- CN105868029A CN105868029A CN201510919133.3A CN201510919133A CN105868029A CN 105868029 A CN105868029 A CN 105868029A CN 201510919133 A CN201510919133 A CN 201510919133A CN 105868029 A CN105868029 A CN 105868029A
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Abstract
Embodiments of the invention disclose a message consistency fault-tolerance processing method and system, which are applied to the technical field of communications. The method can comprise the steps of receiving a current message and recording a receiving moment of the current message, wherein the message carries a time mark for marking a sending moment of the message; according to the time mark of the current message, determining the sending moment of the current message; and performing timeout judgment on the current message: determining a first time difference between the receiving moment and the sending moment of the current message; if the sum of the first time difference and a first time threshold is greater than a delay threshold, performing timeout processing on the current message, otherwise, performing message processing on the current message, wherein the first time threshold is a maximum delay returned by message processing and message response, and the delay threshold is a timeout waiting time set by a sending terminal of the current message. According to the method provided by the invention, the state consistency of the sending terminal and a receiving terminal is ensured.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of concordance fault-tolerance processing method and system.
Background technology
In the embedded real-time operating system of prior art, when communicating between task, task transmitting terminal, after sending information, confirms the normal of communication with the response message receiving task receiving terminal for foundation.I.e. inter-task message communicating realizes through the mode frequently with message queue.In order to ensure being normally carried out of message communicating, existing communication scheme uses waiting-timeout to reply the synchronous transfer realizing inter-task message.When task sender is after the message queue that message is written to task recipient, it is put into the waiting-timeout phase of message back；And confirm task sender when task recipient processes and return message back after receiving the message；Finally receive message back task sender to confirm, then it is assumed that this message communicating is normal.
But, in extreme circumstances, exist task recipient receive message and process after, send message back confirm before, task sender has waited time-out.The now state of message, is marked as waiting that time-out is wrong task sender, is then marked as processing normally task recipient, causes the state of message to occur in that concordance task sender and task recipientMistake。
Accordingly, it would be desirable to a kind of concordance fault-tolerance approach solves the problems referred to above.
Summary of the invention
It is an object of the invention to solve the problem that the state of task sender's message and task recipient's message is inconsistent present in prior art, the invention provides a kind of concordance fault-tolerance processing method and system.
The present invention provide a kind of message concordance fault-tolerance processing method, wherein, described message is carried time labelling, this time labelling identify described message send the moment, described method includes:
Receive current message, record the time of reception of described current message；
What the time labelling according to described current message determined described current message sends the moment；
Described current message carries out time-out judgement, and the time of reception comprising determining that described current message is poor with the very first time sending the moment；If difference of the described very first time and very first time threshold value sum are more than postponing threshold value, described current message are carried out timeout treatment, otherwise described current message is carried out Message Processing；
Wherein, described very first time threshold value is described Message Processing and the maximum delay of response message return, and described delay threshold value is the waiting-timeout time of the transmitting terminal setting of described current message.
Preferably, described method also includes:
After completing described Message Processing, determine second time difference sending the moment completing moment and described current message of described Message Processing；
If described second time difference and the second time threshold sum are more than described delay threshold value, then described current message is carried out timeout treatment, otherwise, then return described response message；
Wherein, described second time threshold is the maximum delay that described response message returns.
Preferably, described timeout treatment includes doing described current message configuration rolling back action, enters timeout treatment mechanism.
Preferably, described response message is to the described confirmation message being currently received and processing.
Preferably, the described time is labeled as timestamp field.
A kind of message concordance fault-tolerance processing method, wherein, carries time labelling in described message, what this time labelling identified described message sends the moment, and described method includes: sends current message and also sets the waiting-timeout time；
Confiscate response message when exceeding the described waiting-timeout time, enter time-outMistakeProcess state.
The present invention also provides for a kind of receiving terminal, and wherein, described receiving terminal includes:
Receive unit, be used for receiving current message, record the time of reception of described current message；
Time determines unit, sends the moment for determine described current message according to the time labelling of described current message；Time-out judging unit, for described current message carries out time-out judgement, the time of reception comprising determining that described current message is poor with the very first time sending the moment；If difference of the described very first time and very first time threshold value sum are more than postponing threshold value, described current message are carried out timeout treatment, otherwise described current message is carried out Message Processing；
Wherein, described current message carries time labelling, what this time labelling identified described current message sends the moment, and described very first time threshold value is the maximum delay that described Message Processing and response message return, and described delay threshold value is the waiting-timeout time that the transmitting terminal of described current message sets.
Preferably, after described time-out judging unit has been additionally operable to described Message Processing, second time difference sending the moment completing moment and described current message of described Message Processing is determined；
If described second time difference and the second time threshold sum are more than described delay threshold value, then described current message is carried out timeout treatment, otherwise, then return described response message；
Wherein, described second time threshold is the maximum delay that described response message returns.
The present invention also provides for a kind of transmitting terminal, and wherein, described transmitting terminal includes:
Transmitting element, is used for sending current message and setting the waiting-timeout time；
Timeout treatment unit, is used for when exceeding the described waiting-timeout time confiscating response message, enters time-outMistakeProcess state.
The present invention also provides for a kind of message concordance fault-tolerance processing system, it is characterised in that described system includes transmitting terminal and receiving terminal.
As can be seen from the above technical solutions, the invention have the advantages that
In the present invention, for the problem that the state of task sender's message present in prior art and task recipient's message is inconsistent, the invention provides a kind of concordance fault-tolerance processing method and system.The present invention is by joining day label information in message communicating, the probability of current message time-out that transmitting terminal sends is judged by time labelling at receiving terminal, this mode can be prevented effectively from transmitting terminal because etc. message time-out to be answered cause current message in the inconsistent problem of transmitting terminal and receiving terminal, it is ensured that transmitting terminal and the concordance of receiving-end state.
Accompanying drawing explanation
Figure 1A kind of message concordance fault-tolerance processing method flow process provided for the embodiment of the present inventionFigure；
Figure 2A kind of receiving terminal structure provided for the embodiment of the present inventionFigure；
Figure 3A kind of message concordance fault-tolerance processing method flow process provided for the embodiment of the present inventionFigure；
Figure 4A kind of sending end structure provided for the embodiment of the present inventionFigure；
Figure 5A kind of message concordance fault-tolerance processing system structure provided for the embodiment of the present inventionFigure。
Detailed description of the invention
The embodiment of the present invention 1 provides message concordance fault-tolerance processing method, it is possible to the problem that present in solution prior art, the state of task sender's message and task recipient's message is inconsistent.
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with in the embodiment of the present inventionAccompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the embodiment of a present invention part rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all should belong to the scope of protection of the invention.
Refer toFigure 1, for the flow process of a kind of concordance fault-tolerance processing method embodiment 1 that the present invention providesFigure, in the present invention, the message to transmission has carried out time labelling, and be used for identifying described message sends the moment, in order to calculate the time delay etc. of described message.The present embodiment detailed process is described as follows:
S101, reception current message, record the time of reception of described current message；
After receiving described current message, first the time of reception receiving current message to be carried out record, in order to the time mark itself carried according to the time of reception and described current messageNote noteThe delivery time of record judges whether described current message there occurs delay during sending.
What S102, time labelling according to described current message determined described current message sends the moment；
This step i.e. receive current message and have recorded described current message the time of reception after, take out the time labelling in described current message, that checks described current message sends the moment.
S103, described current message is carried out time-out judge comprise determining that the time of reception of described current message and the very first time sending the moment are poor；If difference of the described very first time and very first time threshold value sum are more than postponing threshold value, described current message are carried out timeout treatment, otherwise described current message is carried out Message Processing.
Wherein, described very first time threshold value is described Message Processing and the maximum delay of response message return, and described delay threshold value is the waiting-timeout time of the transmitting terminal setting of described current message；
After determining time of reception of described current message and sending the moment, can determine, according to the difference sending the moment of the time of reception of described current message Yu described current message, the time delay that described current message receives, it is poor that this time delay is properly termed as the very first time.
When described current message transmits between task, return the time of confirmation after having the time that described current message is carried out Message Processing and having processed, have a maximum delay allowed for the two time, be properly termed as very first time threshold value.And after described current message is issued, the transmitting terminal of described current message also can set a waiting-timeout time, the time of the message to be answered such as the transmitting terminal of the most described current message, it is properly termed as postponing threshold value.
Described current message is carried out time-out when judging, if the described very first time is poor and described very first time threshold value and is more than described delay threshold value, then it is assumed that described current message has timed, out, and current message is carried out timeout treatment, otherwise, then current message described in normal process.
In the present embodiment, by joining day label information in the message sent, and the message received is carried out time-out judge to determine message is carried out timeout treatment or normal process to keep consistent with transmitting terminal, avoid owing to waiting that message that is overtime and that cause occurs in the situation that transmitting terminal and receiving terminal are inconsistent, it is ensured that transmitting terminal and the concordance of receiving-end state.
On the basis of embodiment 1, in order to ensure the concordance of transmitting terminal and receiving-end state further, present invention also offers message concordance fault-tolerance processing method embodiment 2, again message is carried out time-out judgement, it is to avoid the delay that contingent bursting problem causes in message real time process after current message has been processed.Specifically can include following content:
Preferably, on the basis of embodiment 1, after completing current message process, record the process of the most described current message completes the moment, what described current message processed complete moment and described current message be carved with a time difference when sending, be properly termed as the second time difference.
Return at this point for described response message has allowed a maximum delay, it is properly termed as the second time threshold, if described second time difference and the second time threshold sum are more than described delay threshold value, then described current message is carried out timeout treatment, otherwise, to described current message normal process, return described response message.
Preferably, described timeout treatment can include described current message is done configuration rolling back action, to enter timeout treatment mechanism.
Preferably, described response message is to the described confirmation message being currently received and processing, it is understandable that, in communication process, after message is sent out by the sender of message, after the recipient of message receives message, message to be processed and return the confirmation message receiving message to sender, so that sender knows the state of the message sent out, it is to avoid repeat transmission etc..
Preferably, described time labelling realizes with the form of timestamp field.By increasing timestamp field, message is made marks, in order to the information such as the delivery time of record message.
In the present embodiment, in addition to can realizing the beneficial effect of embodiment 1, further, to current message after the receipt with process after carried out twice time-out judge decide whether message is carried out timeout treatment, this determination methods judges the probability of current message time-out more accurately, thus significantly more efficient avoid owing to waiting time-out and the message that causes occurs in the situation that transmitting terminal and receiving terminal are inconsistent, it is ensured that transmitting terminal and the concordance of receiving-end state.
For the method described in embodiment 1 and 2, present invention also offers a kind of receiving terminal, concrete, asAccompanying drawing 2Shown in, described receiving terminal may include that
Receive unit, be used for receiving current message, record the time of reception of described current message；
Time determines unit, sends the moment for determine described current message according to the time labelling of described current message；
Time-out judging unit, for described current message carries out time-out judgement, the time of reception comprising determining that described current message is poor with the very first time sending the moment；If difference of the described very first time and very first time threshold value sum are more than postponing threshold value, described current message are carried out timeout treatment, otherwise described current message is carried out Message Processing；
Wherein, described current message carries time labelling, what this time labelling identified described current message sends the moment, and described very first time threshold value is the maximum delay that described Message Processing and response message return, and described delay threshold value is the waiting-timeout time that the transmitting terminal of described current message sets.
Preferably, after described time-out judging unit can be also used for described Message Processing, second time difference sending the moment completing moment and described current message of described Message Processing is determined；
If described second time difference and the second time threshold sum are more than described delay threshold value, then described current message is carried out timeout treatment, otherwise, then return described response message；
Wherein, described second time threshold is the maximum delay that described response message returns.
Present invention also offers a kind of concordance fault-tolerance approach embodiment 3,Such as figure 3Shown in, specifically may include that
S301, send current message and set the waiting-timeout time；
S302, confiscate response message when exceeding the described waiting-timeout time, enter time-outMistakeProcess state.
Concrete, the described current message of transmission carries time labelling, what this time labelling identified described current message sends the moment.
In communication process, firstly the need of sending described current message, and after sending described current message, set the waiting-timeout time, being given of this waiting-timeout time is equivalent to define the time receiving response message, and i.e. sending one end of current message only can the arrival of message to be answered such as in waiting-timeout time range.If it exceeds the most do not receive response message during the described waiting-timeout time, then can enter time-outMistakeProcess state.Never receiving response message owing to sending one end of current message, be then that the one end receiving current message does not send, this illustrates that the one end receiving described current message occurs in that delaying state, enters time-outMistakeThe state processed, so sending one end of described current message when not receiving described response message, can enter time-outMistakeProcess state, this ensures that theres the transmitting terminal of described current message and the concordance of receiving-end state.
For a kind of concordance fault-tolerance approach described in above-described embodiment 3, present invention also offers a kind of transmitting terminal,Such as figure 4Shown in, described transmitting terminal specifically may include that transmitting element, is used for sending current message and setting the waiting-timeout time；Timeout treatment unit, is used for when exceeding the described waiting-timeout time confiscating response message, enters time-outMistakeProcess state.
For foregoing a kind of concordance fault-tolerance processing method and transmitting terminal and receiving terminal, present invention also offers a kind of message concordance fault-tolerance processing system embodiment 4,Such as figure 5Shown in, concrete, described system can include the transmitting terminal described in above-described embodiment and receiving terminal.
Wherein said transmitting terminal specifically can include transmitting element, is used for sending current message and setting the waiting-timeout time；Timeout treatment unit, is used for when exceeding the described waiting-timeout time confiscating response message, enters time-outMistakeProcess state.Described receiving terminal specifically may include that reception unit, is used for receiving current message, records the time of reception of described current message；Time determines unit, sends the moment for determine described current message according to the time labelling of described current message；Time-out judging unit, for described current message carries out time-out judgement, the time of reception comprising determining that described current message is poor with the very first time sending the moment；If difference of the described very first time and very first time threshold value sum are more than postponing threshold value, described current message are carried out timeout treatment, otherwise described current message is carried out Message Processing；Wherein, described current message carries time labelling, what this time labelling identified described current message sends the moment, and described very first time threshold value is the maximum delay that described Message Processing and response message return, and described delay threshold value is the waiting-timeout time that the transmitting terminal of described current message sets.
In conjunction with content described in above example, present invention also offers embodiment 5, describe, with concrete example, the process that concordance is fault-tolerant in detail.
As a example by communication by between a kind of embedded real-time operating system vxWorks task, wherein the transmitting terminal described in preceding embodiment here can be specially task sender, receiving terminal described in preceding embodiment here can be specially task recipient, current message described in preceding embodiment is here specially message m sg, time described in preceding embodiment is marked at and is specially timestamp field here, and detailed process is as follows:
Task sender, when sending message m sg, increases timestamp field in message m sg, inserts and send moment t0, and state such as proceeds at message ack to be answered, and concurrently sets waiting-timeout time tw.
Task recipient receives message m sg, record receives the t1 time of reception of message m sg, and that takes out labelling in the timestamp field in message m sg sends moment t0, and contrasts with the t1 time of reception, determine the t1 time of reception ta poor with the very first time sending moment t0, ta=t1-t0 of described message m sg.
Judge that the time-out of described message m sg may according to difference ta of the described very first time.Here the maximum delay time tr0 of the process of described message m sg and the return of response message is set as described very first time threshold value, if difference ta of the most described very first time and described very first time threshold value tr0 sum are more than described waiting-timeout time tw, i.e. ta+tr0 > tw, then it is considered as described current message msg time-out, and does timeout treatment.
Task recipient is after having processed described message m sg, record message m sg described in described Message Processing completes moment t2, the described moment t2 that completes compares with the moment t0 that sends of described message m sg, calculate described second time difference tb sending moment t0 completing moment t2 and described current message that described message m sg processes, tb=t2-t0.
According to tb judge the process of message m sg complete after time-out possibility.Here maximum delay that described response message returns is set as the second time threshold tr1, if described second time difference tb and described second time threshold be tr1's and more than described waiting-timeout time tw, i.e. tb+tr1 > tw, then regard described message m sg time-out, current msg message is done configuration rolling back action, and enters time-out treatment mechanism.
When task sender waits that the time of described response message has reached the described waiting-timeout time tw of setting, and its state then proceeds to time-outMistakeProcess；Now message is also made that by task recipientMistakeProcess, this ensures that there described message m sg at task sender and the state consistency of task recipient.
The present invention time in OLT device PN8602/PN8603, full load is run, in the case of CPU is in high load, occurs waiting in the case of time-out in the transmission of described message m sg, it is possible to the message status ensureing task recipient and task sender be all that transmission is overtimeMistake, it is ensured that the concordance of state.
In the embodiment of the present invention, judge to decide whether message is processed by the current message sent has carried out twice time-out the most before and after treatment, this determination methods judges the probability of current message time-out more accurately, thus significantly more efficient avoid owing to waiting time-out and the message that causes occurs in the situation that transmitting terminal and receiving terminal are inconsistent, it is ensured that transmitting terminal and the concordance of receiving-end state.
Description and claims of this specification and above-mentionedIn accompanying drawingTerm " first ", " second ", the (if present) such as " the 3rd " " the 4th " be for distinguishing similar object, without being used for describing specific order or precedence.Should be appreciated that the data of so use can be exchanged in the appropriate case, in order to the embodiments described herein can be with except hereDiagramOr the order enforcement beyond the content described.Additionally, term " includes " and " having " and their any deformation, meaningFigureIt is to cover non-exclusive comprising, such as, contain series of steps or the process of unit, method, system, product or equipment be not necessarily limited to those steps or the unit clearly listed, but can include the most clearly listing or for intrinsic other step of these processes, method, product or equipment or unit.
The above, above example only in order to technical scheme to be described, is not intended to limit；Although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a message concordance fault-tolerance processing method, it is characterised in that carry time mark in described message
Note, this time labelling identify described message send the moment, described method includes:
Receive current message, record the time of reception of described current message；
What the time labelling according to described current message determined described current message sends the moment；
Described current message is carried out time-out judgement, comprise determining that time of reception of described current message with
The very first time sending the moment is poor；If difference of the described very first time and very first time threshold value sum are more than postponing threshold
Value, carries out timeout treatment, otherwise described current message is carried out Message Processing described current message；
Wherein, described very first time threshold value is described Message Processing and the maximum delay of response message return,
Described delay threshold value is the waiting-timeout time of the transmitting terminal setting of described current message.
Method the most according to claim 1, it is characterised in that described method also includes:
After completing described Message Processing, determine described Message Processing completes moment and described current message
The second time difference sending the moment；
If described second time difference and the second time threshold sum are more than described delay threshold value, then work as described
Front message carries out timeout treatment, otherwise, then return described response message；
Wherein, described second time threshold is the maximum delay that described response message returns.
Method the most according to claim 2, it is characterised in that described timeout treatment includes described
Current message does configuration rolling back action, enters timeout treatment mechanism.
Method the most according to claim 2, it is characterised in that described response message is to work as described
Before the confirmation message that receives and process.
Method the most according to claim 1, it is characterised in that the described time is labeled as timestamp word
Section.
6. a message concordance fault-tolerance processing method, it is characterised in that carry time mark in described message
Note, this time labelling identify described message send the moment, described method includes:
Send current message and set the waiting-timeout time；
Confiscate response message when exceeding the described waiting-timeout time, enter time-out error and process state.
7. a receiving terminal, it is characterised in that described receiving terminal includes:
Receive unit, be used for receiving current message, record the time of reception of described current message；
Time determines unit, for determining described current message according to the time labelling of described current message
Send the moment；Time-out judging unit, for described current message carries out time-out judgement, comprises determining that
The time of reception of described current message is poor with the very first time sending the moment；If the described very first time, difference was with the
One time threshold sum, more than postponing threshold value, carries out timeout treatment to described current message, otherwise to described
Current message carries out Message Processing；
Wherein, carrying time labelling in described current message, this time labelling identifies described current message
Sending the moment, described very first time threshold value is described Message Processing and the maximum delay of response message return,
Described delay threshold value is the waiting-timeout time of the transmitting terminal setting of described current message.
Receiving terminal the most according to claim 7, it is characterised in that described time-out judging unit is also used
After completing described Message Processing, determine described Message Processing completes moment and described current message
Send second time difference in moment；
If described second time difference and the second time threshold sum are more than described delay threshold value, then work as described
Front message carries out timeout treatment, otherwise, then return described response message；
Wherein, described second time threshold is the maximum delay that described response message returns.
9. a transmitting terminal, it is characterised in that described transmitting terminal includes:
Transmitting element, is used for sending current message and setting the waiting-timeout time；
Timeout treatment unit, is used for when exceeding the described waiting-timeout time confiscating response message, enters super
Time fault processing state.
10. a message concordance fault-tolerance processing system, it is characterised in that described system includes transmitting terminal
And receiving terminal；
Wherein, described transmitting terminal includes:
Transmitting element, is used for sending current message and setting the waiting-timeout time；
Timeout treatment unit, is used for when exceeding the described waiting-timeout time confiscating response message, enters super
Time fault processing state；
Described receiving terminal includes:
Receive unit, be used for receiving current message, record the time of reception of described current message；
Time determines unit, for determining described current message according to the time labelling of described current message
Send the moment；Time-out judging unit, for described current message carries out time-out judgement, comprises determining that
The time of reception of described current message is poor with the very first time sending the moment；If the described very first time, difference was with the
One time threshold sum, more than postponing threshold value, carries out timeout treatment to described current message, otherwise to described
Current message carries out Message Processing；
Wherein, carrying time labelling in described current message, this time labelling identifies described current message
Sending the moment, described very first time threshold value is described Message Processing and the maximum delay of response message return,
Described delay threshold value is the waiting-timeout time of the transmitting terminal setting of described current message.
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