CN107819556A

CN107819556A - A kind of service state switching method and device

Info

Publication number: CN107819556A
Application number: CN201610818126.9A
Authority: CN
Inventors: 张樱
Original assignee: Beijing Kingsoft Cloud Network Technology Co Ltd; Beijing Kingsoft Cloud Technology Co Ltd
Current assignee: Beijing Kingsoft Cloud Network Technology Co Ltd; Beijing Kingsoft Cloud Technology Co Ltd
Priority date: 2016-09-12
Filing date: 2016-09-12
Publication date: 2018-03-20
Anticipated expiration: 2036-09-12
Also published as: CN107819556B

Abstract

The embodiment of the invention discloses a kind of service state switching method and device, the equipment applied to destination service is configured with.This method includes：Read the first mark recorded in target database and the first moment；Then it is identical to judge that the first mark identifies whether with the second of destination service；If identical, judge the time difference at the first moment and current time whether more than the first preset duration；If it is, the service state of switching destination service is stand-by state；If it has not, the first moment of renewal is current time；If it is not the same, judge the time difference at the first moment and current time whether more than the second preset duration；If it is, the service state of switching destination service is master state, the first moment of renewal is current time, and renewal first is identified as the second mark.When switching the service state of service using this programme, it is not necessary to additionally dispose Zookeeper, reduce the resource that extra deployment Zookeeper is consumed.

Description

A kind of service state switching method and device

Technical field

The present invention relates to field of computer technology, more particularly to a kind of service state switching method and device.

Background technology

Service (server), for the angle of hardware, refer to the server being physically present；From the angle of software Say, refer to the computer software for possessing server side functionality, service is generally connected with client (client), and client passes through The service of access obtains corresponding service content, such as accesses database；When client obtains a certain service content, in order to anti- Only to should the service of item service content break down or other no normal direction clients provide the phenomenon of service content, prior art In, it will usually set at least two services to provide same service content, the state of these services can be divided into：Master state and standby With state, the service in master state is referred to as main service (active server), and the service in stand-by state is referred to as standby Service (standby server).

When client obtains service content, service content is provided for client in real time by main service, when main service can not When continuing to provide service content, active service switching oneself state is master state with as new main service, and thus new Main service continues to provide the user corresponding service content, and the switching of above-mentioned this stand-by state and master state is referred to as active and standby cut Change.

In the prior art, (one distributed, open source code generally by ZooKeeper for the method for active-standby switch Distributed application program coordination service) realize, such as HDFS (Hadoop Distributed File System, Hadoop Distributed file system), YARN (Yet Another Resource Negotiator, another resource coordination person) service；It is existing There is technology to be used as lock by creating znode nodes on ZooKeeper, getting the service of lock turns into main service, is not locked Service as active service.Main service regularly updates znode nodes, continues holder lock, when main service break down with When ZooKeeper is disconnected, znode nodes are no longer updated, then active service gets lock and the own services that automatically switch State, turn into new main service.

The switching of the service state serviced in the prior art needs to rely on the ZooKeeper disposed in advance, otherwise can not be real The switching of existing service state.Therefore, a kind of ZooKeeper cans that need not dispose are designed and realize cutting for the service state serviced The method of changing is very necessary.

The content of the invention

The embodiment of the invention discloses a kind of service state switching method and device, with no deployment ZooKeeper's In the case of, realize the switching of the service state of service.Technical scheme is as follows：

For the above-mentioned purpose, in a first aspect, the embodiments of the invention provide a kind of service state switching method, applied to The equipment of destination service is equipped with, methods described includes：

The first mark recorded in target database and the first moment are read, wherein, described first is identified as in master With the mark of the service of state, first moment is the present service period initial time of the service in master state；

It is identical to judge that first mark identifies whether with the second of the destination service；

If identical, the service state for judging the destination service is master state, and judges first moment with working as Whether the time difference at preceding moment is more than the first preset duration；If it is, the service state for switching the destination service is standby shape State；If it has not, renewal first moment is current time；

If it is not the same, the service state for judging the destination service is stand-by state, and judge first moment with Whether the time difference at current time is more than the second preset duration；If it is, the service state for switching the destination service is primary State, it is current time to update first moment, and renewal described first is identified as second mark, wherein, described second Preset duration is not less than first preset duration.

Preferably, the service state switching method also includes：

According to the service state of local record, whether the service state for judging the destination service is master state；

If it is, judging whether the network connection of the destination service and the target database disconnects；

If off, the second moment and current time of local record are contrasted, if second moment and current time Time difference exceedes first preset duration, and the service state for switching the destination service is stand-by state, wherein, described second Moment is the present service period initial time of the service in master state；

If do not disconnected, the first mark recorded in the reading target database and the first moment are performed；

The time difference for judging first moment and current time whether more than the first preset duration judged result Be it is no, or the time difference for judging first moment and current time whether more than the second preset duration judged result During to be, the service state switching method also includes：

It is current time to update second moment.

Preferably, the service state according to local record, judge the destination service service state whether based on With state, including：

According to the default cycle very first time and the service state of local record, the destination service is periodically judged Whether service state is master state；Wherein, the cycle very first time is less than first preset duration, and described second is default Duration is not less than first preset duration and the cycle very first time sum.

Preferably, it is described to read the first mark recorded in target database and the first moment, including：

Based on default second time cycle, periodically read the first mark for being recorded in the target database and First moment, wherein, second time cycle is less than first preset duration, and second preset duration is not less than described First preset duration and the second time cycle sum.

Preferably, when the first mark and the first moment of main service are not recorded in the target database, the clothes Business state switching method also includes：

Using described second mark as described first identify, will current time as first moment, write the mesh Mark database；

The service state for switching the destination service is master state.

Preferably, first mark and second mark include：The port information and equipment of corresponding with service IP address information.

Second aspect, the embodiments of the invention provide a kind of service state switching device, applied to being configured with destination service Equipment, the service state switching device includes：

Read module, for reading the recorded in target database first mark and the first moment, wherein, described first The mark of the service in master state is identified as, first moment is the present service period of the service in master state Initial time；

First judge module, for judging that it is identical that first mark identifies whether with the second of the destination service；

First processing module, in the case of being in the judged result of first judge module, judge the mesh The service state of mark service is master state, and judges whether the time difference at first moment and current time is pre- more than first If duration；If it is, the service state for switching the destination service is stand-by state；If it has not, renewal first moment is Current time；

Second processing module, in the case of being no in the judged result of first judge module, judge the mesh The service state of mark service is stand-by state, and judges whether the time difference at first moment and current time is pre- more than second If duration；If it is, the service state for switching the destination service is master state, when renewal first moment is current To carve, renewal described first is identified as second mark, wherein, when second preset duration is default not less than described first It is long.

Preferably, the service state switching device also includes：

Second judge module, for the service state according to local record, judging the service state of the destination service is No is master state；

3rd judge module, in the case of being in the judged result of second judge module, judge the mesh Whether mark service and the network connection of the target database disconnect；If do not disconnected, the read module is triggered；As resolutely Open, contrast the second moment and current time of local record, if the time difference at second moment and current time is more than described First preset duration, the service state for switching the destination service are stand-by state, wherein, second moment is in primary The present service period initial time of the service of state；

Judge the time difference at first moment and current time whether more than first described in the first processing module When the judged result of preset duration is no, or first moment and current time are judged described in the Second processing module Time difference whether more than the second preset duration judged result for be when, described device also includes：

Update module, it is current time for updating second moment.

Preferably, second judge module, is specifically used for：

Preferably, the read module, is specifically used for：

Preferably, when the first mark and the first moment of main service are not recorded in the target database, the clothes Business state switching device also includes：

Writing module, for using described second mark as described first identify, will current time as described first when Carve, write the target database；

Handover module, the service state for switching the destination service are master state.

As seen from the above, in scheme provided in an embodiment of the present invention, the first mark recorded in target database is read first Knowledge and the first moment；Then it is identical to judge that the first mark identifies whether with the second of destination service；If identical, target is judged The service state of service is master state, and judge the first moment and current time time difference it is whether default more than first when It is long；If it is, the service state of switching destination service is stand-by state；If it has not, the first moment of renewal is current time；If Differ, the service state for judging destination service is stand-by state, and judge the first moment and current time time difference whether More than the second preset duration；If it is, the service state of switching destination service is master state, when the first moment of renewal is current Carve, renewal first is identified as the second mark.

Compared with prior art, in scheme provided in an embodiment of the present invention, corresponding to two services of same service content Stored in the target database first mark the second mark corresponding with itself can be contrasted, and then judge that the target takes Business is currently main service or active service；When the destination service is in master state, if the first moment and current time Time difference more than the first preset duration, then destination service switching oneself state is stand-by state, when the destination service is in During stand-by state, if the time difference at the first moment and current time, more than the second preset duration, destination service switching is certainly Body state is master state；The switching of the service state of destination service can be according to the respective record in target database, not Need additionally to dispose Zookeeper, also avoid the need for special keeper and safeguard Zookeeper, reduce extra deployment The resource that Zookeeper is consumed；Moreover, need not between the equipment at two service difference places of corresponding same service content It is in communication with each other connection, it is possible to ensure that two services for being directed to same service content will not be within the same period all in primary State, while reduce this and communicate to connect consumed resource.

Certainly, any product or method for implementing the present invention must be not necessarily required to reach all the above excellent simultaneously Point.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.

Fig. 1 is a kind of the first schematic flow sheet of service state switching method provided in an embodiment of the present invention；

Fig. 2 is a kind of second of schematic flow sheet of service state switching method provided in an embodiment of the present invention；

Fig. 3 is the first mark and for not recording current main service in the embodiment of the present invention in target database In the case of one moment, the schematic flow sheet corresponding to the method for destination service switching service state；

Fig. 4 is a kind of the first structural representation of service state switching device provided in an embodiment of the present invention；

Fig. 5 is a kind of second of structural representation of service state switching device provided in an embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.

The present invention is simply introduced from the angle being compared with the prior art first below.

In the prior art, in order to complete the switching of the service state of service, two except configuring corresponding with service content Service is outer, can also dispose a ZooKeeper, and corresponding two equipment is required to being somebody's turn to do respectively for two services herein ZooKeeper keeps connection, to ensure two services and the network connection of the ZooKeeper herein.

Sayed as foregoing, prior art is used as lock by creating znode nodes on ZooKeeper, gets the clothes of lock Business turns into main service, does not obtain the service of lock as active service.Main service regularly updates znode nodes, continues holder lock, when When main service the failures such as the machine of delaying occurs and disconnected with ZooKeeper, znode nodes are no longer updated, then active service obtains Lock and the own services state that automatically switches are got, turns into new main service.

As seen from the above, the switching of the service state serviced in the prior art needs to rely on the ZooKeeper disposed in advance, Otherwise the switching of service state can not be realized, and the waste of resource will certainly be caused by disposing extra ZooKeeper.

During using scheme provided in an embodiment of the present invention, the first mark and the recorded in target database is read first One moment；Then it is identical to judge that the first mark identifies whether with the second of destination service；If identical, the clothes of destination service are judged Whether business state is master state, and judge the time difference at the first moment and current time more than the first preset duration；If it is, The service state for switching destination service is stand-by state；If it has not, the first moment of renewal is current time；If it is not the same, sentence The service state of service of setting the goal is stand-by state, and judges whether the time difference at the first moment and current time is pre- more than second If duration；If it is, the service state of switching destination service be master state, the first moment of renewal is current time, updates the One is identified as the second mark.

Compared with prior art, in scheme provided in an embodiment of the present invention, corresponding to two services of same service content Stored in the target database first mark the second mark corresponding with itself can be contrasted, and then judge that the target takes Business is currently main service or active service；When the destination service is in master state, if the first moment and current time Time difference more than the first preset duration, then destination service switching oneself state is stand-by state, when the destination service is in During stand-by state, if the time difference at the first moment and current time, more than the second preset duration, destination service switching is certainly Body state is master state；The switching of the service state of destination service can be according to the respective record in target database, not Need additionally to dispose Zookeeper, also avoid the need for special keeper and safeguard Zookeeper, reduce extra deployment The resource that Zookeeper is consumed.

The present invention is described in detail by specific embodiment again below.

A kind of service state switching method provided in an embodiment of the present invention, the equipment applied to destination service is configured with.Should The explanation, destination service herein can refer to the software with service function, in addition, this is configured with setting for destination service Standby can directly be server, and service content is provided from server to client.

It is emphasized that the embodiment of the present invention is to be applied to be provided with the equipment of the destination service, and configure active and standby Switch mode just has to two services of configuration, that is to say, that, it is necessary to two equipment for being configured with destination service, herein two Destination service can be a main service of conduct, another is as active service during work.

A kind of the first schematic flow sheet of service state switching method provided in an embodiment of the present invention as shown in Figure 1, This method includes：

S101：Read the first mark recorded in target database and the first moment.Wherein, this first is identified as and is in The mark of the service of master state, first moment are the present service period initial time of the service in master state.

It is stored with the target database on the above-mentioned first mark and the record at the first moment, such as in the number of targets According to creating a database table in storehouse, and with the entitled major key of service content, above-mentioned first is identified and is engraved when first Record is in the database table.When the equipment accesses the target database, corresponding data can be found based on the title of service content Storehouse table, and then read above-mentioned first mark and the first moment.

In embodiments of the present invention, the corresponding service for being currently at master state of the first mark；And the first moment is then right Answer the initial time of the present service period of current time main service, it should illustrate, the starting of the seeervice cycle of a certain main service Moment includes：At the time of the main service corresponds to when switching to master state by stand-by state, in addition, a certain service of the main service Before end cycle, at the time of the main service corresponds to when entering next seeervice cycle.

For example, the said equipment when reading target database, recorded in the target database first be identified as X, first 20 divide 30 seconds when moment is September in 2016 1 day 10, show to be identified as X corresponding to the main service at current time, and the main service Present service period at the beginning of between 20 to divide 30 seconds during September in 2016 1 day 10.

S102：It is identical to judge that the first mark identifies whether with the second of destination service.

Two services each are both provided with identifying, in embodiments of the present invention, in order to ensure the uniqueness of mark, the first mark Know and the second mark may each comprise：The port information of corresponding with service and the IP address information of equipment, it will be understood that work as mesh The service of marking is when having the software of service end function, and when starting the destination service in corresponding equipment, the destination service can account for With a port, the port numbers can think above-mentioned port information.For example, IP address and port corresponding to a certain destination service Number be respectively：36.7.72.139 and 8888, then now the second identification information of the destination service can be “36.7.72.139：8888”.

If first mark is identical with second mark, S103 is performed：The service state for judging destination service is primary State, and judge the time difference at the first moment and current time whether more than the first preset duration.

When first mark is identical with second mark, show to service based on the destination service, in the embodiment of the present invention In, when destination service and the database keep normal communication connection, if what is recorded in database table in target database should First mark is identical with second mark, and then judges after servicing based on the destination service, directly judges the first moment and currently Whether the time difference at moment is more than the first preset duration.

It should be noted that the first preset duration herein can correspond to the duration of a lease, the service of above-mentioned main service Cycle can correspond to a lease, and the embodiment of the present invention is exactly to be realized by the first mark recorded in the target database The function of lock, period of validity corresponding to lock are exactly to be limited according to the lease.

For example, first preset duration is 1 minute, the first moment recorded in the current time target database is： 0 divides 40 seconds during August in 2016 30 days 1, if 1 dividing 45 seconds when current time is August in 2016 30 days 1, represents for the first moment with working as The time difference at preceding moment has exceeded the first preset duration；In other words, that is, a lease of main service is set as August in 2016 30 days 01 divides 40 seconds when dividing 40 seconds to 2016 on Augusts 30,1 when 1, if 1 dividing 45 seconds when current time is August in 2016 30 days 1, represents Current lease is crossed.

If the time difference at first moment and current time more than the first preset duration, performs S1031：Switch target clothes The service state of business is stand-by state.

If the time difference at first moment and current time not less than the first preset duration, performs S1032：Update this One moment was current time.

Now, although destination service did not terminate, can entered as main service, its current corresponding seeervice cycle Row step S1032, so that winner, which services, enters next seeervice cycle, the destination service does not change the service state of itself.Example Such as：The first moment recorded in the target database is：1 divides 25 seconds during August in 2014 10 days 9, and the first preset duration is 2 points Clock, current time be：2 divide 25 seconds during August in 2014 10 days 9, and now the time difference at first moment and current time is not less than 2 Minute, then the first moment for only needing to update in the target database is：2 divide 25 seconds during August in 2014 10 days 9.

If first mark differs with second mark, S104 is performed：The service state for judging destination service is standby With state, and judge the time difference at the first moment and current time whether more than the second preset duration；Wherein, this second it is default when Length is not less than first preset duration.

It is obvious, if the time difference at first moment and current time not less than the second preset duration, do not do any Operation, keeps the service state of destination service to remain as stand-by state.

If the time difference at first moment and current time more than the second preset duration, performs S1041：Switch target clothes The service state of business is master state, and it is current time to update first moment, update this first be identified as this second mark.

For example, the first moment recorded in target database is：54 divide 0 second during September in 2016 10 days 2, and the first of record It is identified as 36.7.72.148：6666, the second preset duration is 1 minute, and current time is：55 divide 30 during September in 2016 10 days 2 Second, the second of destination service is identified as 36.7.72.139：8888, now the time difference at the first moment and current time exceeded Second preset duration, then it is master state that the destination service switches own services state first, is then updated in target database The first moment be：55 divide 30 seconds during September in 2016 10 days 2, and renewal first is identified as：36.7.72.139：8888.

Additionally it should illustrate, in active-standby switch pattern, two services corresponding to same service content can not be simultaneously In master state, if so the second preset duration is less than first preset duration, it is more likely that current main service occur Still in normal operation, active service but switches to another main service.

For example, the first moment recorded in the target database is：24 divide 8 seconds during August in 2015 18 days 8, and first is default Shi Changwei 2 minutes, the second preset duration are 1 minute, it is assumed that current time is：25 divide 38 seconds during August in 2015 18 days 8, currently Main the service x and active service y that moment corresponds to same service content have read the target database simultaneously, due to the first moment With time difference at current time not less than the first preset duration 2 minutes, but the second preset duration is exceeded 1 minute, has now led It is only that can update the first moment stored in target database to service x, does not change own services state, but active service y meetings It is master state to switch own services state, and now, two services corresponding to same service content are in master state simultaneously.

In the embodiment of the present invention, in order to ensure that destination service can switch the service state of itself, above-mentioned reading in time The first mark recorded in target database and the first moment (S101), it can include：

Based on default second time cycle, the first mark and first recorded in target database is periodically read Moment, wherein, the second time cycle was less than the first preset duration, when the second preset duration is not less than the first preset duration and second Between cycle sum.

It is understood that if current main service is broken down, network connection is disconnected with above-mentioned target database, Client can not be continued as simultaneously service content is provided, do not read in time as equipment where the destination service of active service Database is taken, the main service that the destination service turns into new would not be switched in time, and then carried for client by new main service For service content.

But if this as active service destination service where equipment with the second time less than the first preset duration In the cycle, the step of periodically carrying out foregoing S101, it can just switch the main service that the destination service turns into new in time, and then by new Main service provide service content for client.

Such as：35 divide 20 seconds when the first moment recorded in target database is 18 days 2 January in 2013, first it is default when A length of 2 minutes, it is assumed that main service is disconnected the network connection with target database when 36 divided 30 seconds at 18 days 2 January in 2013, Client can not be continued as simultaneously, and service content is provided；But as equipment where the destination service of active service in 2013 0 divides and just performs within 30 seconds step S101 during 18 days 3 January, and is serviced based on the successful switch destination service, it will be understood that 36 0 divide client in 30 seconds this periods not get when dividing 30 seconds to 2013 on January 18,3 during 18 days 2 January in 2013 Service content.

But if if this as active service destination service where equipment with 1 minute for time interval, periodically Ground performs the step of foregoing S101, the second preset duration be 2 points 5 seconds, ibid example, it is assumed that the equipment was at 18 days 2 January in 2013 The step of foregoing S101 being performed at 36 points and 20 seconds, when now being preset due to the time difference at the first moment and the moment not less than second Long, the destination service remains as active service, and interval is after 1 minute, and 37 divide 20 seconds when current time is 18 days 2 January in 2013, this When the first moment and current time time difference more than the second preset duration, the destination service is switching to new main service, It is appreciated that 36 37 divide 20 seconds this shorter time periods when dividing 30 seconds to 2013 on January 18,2 only at 18 days 2 January in 2013 Interior client can not get service content.

On the other hand, it is normal with the network connection of target database if main service does not occur any failure, while also may be used Normally to provide service content to client, still, due to no the first moment updated in time in target database, have It is likely to occur：From first moment after the second preset duration, service, caused corresponding to same based on active service switching Two services of service content are in master state.

For example, 35 divide 20 seconds when the first moment recorded in target database is 18 days 2 January in 2013, first it is default when A length of 1 minute, the second preset duration be 1 point 10 seconds, it is assumed that to January 18 in 2013 after dividing 20 seconds from during 18 days 2 January in 2013 35 37 divided in the time of 00 second during day 2, and the equipment where main service is not carried out step S101 all the time, then during no renewal first Carve, and the main service can provide service content to service end all the time；At 18 days 2 January in 2013,37 when dividing 00 second, currently Active service where equipment perform step S101, and carry out subsequent step, it is clear that, the first moment and current time when Between difference exceeded the second preset duration, then the active service can equally switch to main service, now, corresponding to same service content Two services be in master state.

But if if this as main service destination service where equipment with 40 seconds for time interval, periodically The step of performing foregoing S101, that is to say, that in the case that main service is not broken down, equipment was at interval of 40 seconds where main service Carry out the operation for once updating that the first moment was current time, it will be understood that in the case, ensure active service place When equipment reads the target database every time, first moment with the time difference at corresponding current time not over 40 seconds, i.e., Divide 10 seconds no more than foregoing second preset duration 1, so it is master state that the active service, which will not switch oneself state,.

In addition, it is to be noted that even if main service is not broken down, above-mentioned renewal first moment still can be performed For current time (S1032), it is not intended that it is current time that main service, which necessarily can successfully change first moment,.

Assuming that main service does not have successful execution S1032, main service in the first preset duration since the first moment Inevitable also be stand-by state without switching own services state, it is further assumed that main service is preset beginning to pass through first from the first moment After duration corresponding to the 3rd moment perform step S1032, still, be not updated successfully, it is clear that main service will not switch from The service state of body, now, the time for performing step S101 next time would is that after the 3rd moment by the second predetermined period The 4th corresponding moment, and just to switch oneself state be stand-by state for main service at four moment, if the Three moment, it was master state, now, same service content that active service, which performs switching oneself state, between the 4th moment Two services are in master state.

It can be said that from the period at the 3rd moment to the 4th moment be a grace period, within the grace period, by two service structures Into system be in a kind of jeopardy (danger) state, within this period, it is possible that two services are in primary shape The phenomenon of state.

So the second preset duration herein is not less than the first preset duration and the second time cycle sum, also for Guarantee will not be in the phenomenon of master state in synchronization corresponding to two services of same service content, it is, of course, preferable to , the second default preset duration is directly equal to the first preset duration and the second time cycle sum.

For example, first moment 10 divides 5 seconds when being 2015 9 and 3 days 7, the first preset duration is 1 minute, second round For 20 seconds, it is assumed that 11 divided in the period of 5 seconds when dividing 5 seconds to 2015 9 and 3 days 7 from 2015 9 and 3 days 7 10, and main service is held Row step S1032, but be not successfully completed renewal operation, and 11 divided 5 seconds at 2015 9 and 3 days 7 and perform step S1032, but be not updated successfully still, it is clear that, then after 20 seconds, it is standby that main service, which can just perform switching oneself state, With the operation of state, so, corresponding active service 11 should divide 5 seconds in 20 seconds after starting at 2015 9 and 3 days 7, no The operation that switching oneself state is master state can be performed, thus the second default preset duration be no less than the first preset duration with Second time cycle sum.

It should be noted that two services of corresponding same service content, when arrangement is most started, two services are all In stand-by state, meanwhile, the first mark and the first moment of current main service are not recorded in the target database yet, such as Shown in Fig. 3, now this method also includes：

S301：Using the second of destination service the mark as first mark, will current time as first moment, write Target database.

First mark is not recorded in target database and in the case of first moment, it is necessary in the number of targets According to write-in in storehouse on the first mark and the record at first moment, while the second mark is assigned to first mark, will Current time is assigned to first moment.

S302：The service state for switching destination service is master state.

It is appreciated that in the embodiment of the present invention, do not recorded in target database first mark and this first when In the case of quarter, two services in stand-by state simultaneously, the second of destination service is identified as first mark at first, And the service of target database is write using current time as first moment, it is primary shape that can switch own services state State.

It is well known by those skilled in the art that when service is in stand-by state, its corresponding port is to close, so main , it is necessary to close port corresponding to main service when service switching oneself state is stand-by state.It should be noted that in prior art In, when client is based on domain name access main service, due to itself not having the IP address and port information of main service, so objective Family end can send to Zookeeper and ask, and get the IP address and port information of current main service, and then access main service To obtain corresponding service content.

In the embodiment of the present invention, when client is based on domain name access main service, client broadcasts the domain name, net to network-side Network end group is in IP address and port information corresponding to the domain name lookup, because the port of active service is closed, so Network-side only can be to client feedback currently IP address and port information corresponding to main service, so that client is based on current main clothes IP address corresponding to business and port information, access main service, it is clear that, in embodiments of the present invention, client need not appoint What is changed.

It is appreciated that the embodiment of the present invention make use of Database lock mechanism, target is realized using database table as lock The switching of the service state of service, obtain and more newly arrive by the lease of lock and realize the switching of active and standby service.People in the art Member is well known that, database table is locked using SELECT FOR UPDATE (a kind of add handwork lock sentence), to same database The affairs that table is operated, it is necessary to could be performed after other Transaction Informations COMMIT (release).

The database table is exactly to be stored with the database table at first moment and the first mark, and each lease is exactly from first Moment start after the first preset duration in corresponding period.The target database can be common database, such as Mysql databases.

Such as a database table is established in database, specific database table structure is as shown in table 1 below.

Table 1

Filed	Type	Null	Key	Default
					service_name	varchar(36)	NO	PRI	NULL
active_server_ip_port	varchar(36)	YES		NULL
					last_active_time	datetime	YES		NULL

In table, " service_name " represents the title of service content, and its corresponding data type is " varchar (characters Type) ", maximum character length is 36 bytes, and the title of service content can not think sky, moreover, the entitled number of service content According to the major key of storehouse table, default value can not think sky corresponding to the title of service content；" active_server_ip_port " is represented Above-mentioned first mark, can be represented with the IP address and port address of main service in embodiments of the present invention, the first mark Corresponding data type is " varchar (character type) ", and maximum character length is 36 bytes, and the first mark can be sky, and And first mark corresponding to default value can be sky；" last_active_time " represents above-mentioned first moment, number corresponding to it According to type " datetime (date-time) ", the first moment can be sky, and default value corresponding to the first moment can be sky.

In addition, in active-standby switch pattern, corresponding to same service content two services not in the same period all In master state.Therefore：

In the prior art, in order to prevent original main service be seemingly-dead such as original main service simply with Zookeeper network connection goes wrong, but original main service still can provide service content to client, now fresh cut The main service changed needs to carry out original main service fence (fence) operations, it is ensured that it no longer provides service content, ensures two A main service is only existed in individual service.In order to ensure at most only to deposit a master in two services corresponding to same service content Service is, it is necessary to which the communication between devices residing for two services respectively connect, to ensure that fence operations can be realized.

And in embodiments of the present invention, need not between the equipment where two services respectively of corresponding same service content It is in communication with each other connection, it is possible to ensure that two services for being directed to same service content will not be within the same period all in primary State, while reduce this and communicate to connect consumed resource.

Relative to Fig. 1, a kind of second of schematic flow sheet of service state switching method as shown in Figure 2, this method is also Including：

S201：According to the service state of local record, whether the service state for judging destination service is master state.

It is understood that the equipment for being configured with destination service can be easy to know whether current service is in primary shape State, for example, whether port corresponding to the destination service is in open mode, or, whether destination service thereon is provided out Service content, information of the equipment based on the record of itself judge whether the destination service can be by existing in master state Technology realizes that the embodiment of the present invention will not be repeated here.

In embodiments of the present invention, the above-mentioned service state according to local record, judging the service state of destination service is No is master state, Ke Yishi：

According to the default cycle very first time and the service state of local record, the service of destination service is periodically judged Whether state is master state；Wherein, the cycle very first time is less than first preset duration, second preset duration Not less than first preset duration and the cycle very first time sum.

It should be noted that the effect in the cycle very first time herein is identical with the effect of foregoing second time cycle, and And, it is preferred that the cycle very first time is arranged to identical value with the second time cycle.

Designed in addition, the above-mentioned cycle very first time and the second time cycle can be based on actual conditions, in equipment performance In the case of permission, the cycle very first time and the second time cycle should be set as small as possible.

If S201 judged result is no, S101 is performed：Read the first mark and first recorded in target database Moment.

If S201 judged result is yes, S202 is performed：Judge destination service and target database network connection whether Disconnect.

If the network connection of destination service and target database disconnects, S203 is performed：When contrasting the second of local record Carve and current time, if the time difference at second moment and current time more than the first preset duration, switches the clothes of destination service Business state is stand-by state.Wherein, second moment is the present service period initial time of the service in master state.

It should distinguish, second moment is recorded in destination service, that is, is recorded in the equipment where destination service； And the first moment was then recorded in the target database.Additionally it should, it is emphasized that in all embodiments of the invention, One moment and the second moment can use timestamp, and it can directly be renewal pair at current time that the first moment of foregoing renewal, which is, The timestamp answered.

Obvious, if destination service disconnects as main service and the network connection of target database, also can not just succeed Step S101 is performed, also just can not necessarily perform the operation at the first moment of renewal, destination service is in main service state all the time, and Another relative service of destination service services based on will necessarily at a time switching, and two services occurs and is in primary shape The phenomenon of state.

But in embodiments of the present invention, main service can be switched to by active service by step S201~S203, institute So that step S201~S203 operation can avoid, in the case where main service disconnects with target database network, occurring two Service is in the phenomenon of master state.

If the network connection of destination service and target database does not disconnect, perform above-mentioned state and remember in reading target database First mark of record and the first moment (S101).

In order to ensure upgrading in time for the second moment, whether the above-mentioned time difference for judging the first moment and current time exceedes The judged result of first preset duration is no, or whether the above-mentioned time difference for judging the first moment and current time is more than second The judged result of preset duration is when being, this method also includes：

S105：It is current time to update second moment.

Such as：Destination service x is currently at master state, and foregoing the cycle very first time and the second time cycle are 1 point Clock, 11 divide 5 seconds when the first moment was 2015 9 and 3 days 7, it is clear that and 11 divide 5 seconds when the second moment was also 2015 9 and 3 days 7, Assuming that the first preset duration is 2 minutes, if destination service x 11 divided 50 seconds and target database at 2015 9 and 3 days 7 Network connection disconnects, that is, represents that hereafter the equipment where destination service x can not read the target database；But destination service x Whether the equipment at place may determine that the time difference at second moment and current time more than the first preset duration, it is assumed that target takes Equipment where business x 13 was divided 45 seconds at 2015 9 and 3 days 7 and performs operation：Judge second moment and current time when Between difference whether more than the first preset duration, now, due to judging that the time difference at second moment and current time is pre- more than first If duration, so the service state that can switch destination service x is stand-by state.

Below by a specific example, simply to be introduced the present invention.

For the service content of one entitled " ABCDEFG ", it is corresponding with two services：X and y, service the corresponding of x Second is identified as 154.125.2.8：7777, service y corresponding second is identified as 154.125.2.136：8888, foregoing first Time cycle and the second time cycle are 30 seconds, the first preset duration be 1 minute, the second preset duration be 1 point 30 seconds.

At the beginning of most, service x and y is in stand-by state, and then, service x establishes major key in target database For " ABCDEFG " database table, and 154.125.2.8 is identified as by itself second：7777 and 2015 current times September 30 1 divides 55 seconds and is written to respectively as the first mark and the first moment in target database when days 14, now service x become based on take Business.

Assuming that in September in 2015 30 days 14 20 when dividing 55 seconds, the first moment was updated to September in 2015 30 by service x 20 divide 55 seconds when 14, can not then be successfully updated for the first moment all the time, then after dividing 55 seconds to during September in 2015 30 days 14 21, 22 when dividing 05 second such as in September in 2015 30 days 14, and service x again reads off database, now due to the first moment with it is current when The time difference at quarter, then switching service x service state was stand-by state more than the first preset duration.

Meanwhile when to September in 2015 30 days 14 22 divide 25 seconds after, 22 when dividing 30 seconds such as in September in 2015 30 days 14, Service titles " ABCDEFG " of the y based on service content finds corresponding database table, then reads the first moment therein and the One mark, because the time difference at the first moment and current time is more than the service state of the second preset duration, then switching service y For master state.

It is appreciated that when scheme provided by the invention is applied in two services corresponding to same service content, can be certainly It is dynamic to realize active-standby switch.

Corresponding to Fig. 1, as shown in figure 4, a kind of service state switching device provided in an embodiment of the present invention, applied to configuration There is the equipment of destination service, described device includes：

Read module 110, for reading the recorded in target database first mark and the first moment, wherein, it is described First is identified as the mark of the service in master state, and first moment is the current service of the service in master state Period start time；

First judge module 120, for judging that it is identical that first mark identifies whether with the second of the destination service；

First processing module 130, in the case of being in the judged result of first judge module, described in judgement Whether the service state of destination service is master state, and judge the time difference at first moment and current time more than first Preset duration；If it is, the service state for switching the destination service is stand-by state；If it has not, renewal first moment For current time；

Second processing module 140, in the case of being no in the judged result of first judge module, described in judgement Whether the service state of destination service is stand-by state, and judge the time difference at first moment and current time more than second Preset duration；If it is, the service state for switching the destination service is master state, when renewal first moment is current To carve, renewal described first is identified as second mark, wherein, when second preset duration is default not less than described first It is long.

In practical application, specifically, the read module 110, is specifically used for：

Specifically, first mark and second mark include：The IP address information of the equipment of corresponding with service And port information.

Additionally it should illustrate, the first mark and the first moment of main service are not recorded in the target database When, described device also includes writing module and handover module (not shown)：

Corresponding to Fig. 2, as shown in figure 5, a kind of service state switching device provided in an embodiment of the present invention, can also be wrapped Include：

Second judge module 210, for the service state according to local record, judge the service state of the destination service Whether it is master state.If the judged result of the second judge module 210 is no, above-mentioned read module 110 is directly triggered.

3rd judge module 220, in the case of being in the judged result of second judge module 210, judge Whether the network connection of the destination service and the target database disconnects；If do not disconnected, the read module is triggered 110；If off the second moment and current time of local record being contrasted, if the time at second moment and current time Difference exceedes first preset duration, and the service state for switching the destination service is stand-by state, wherein, second moment For the present service period initial time of the service in master state；

Judge the time difference at first moment and current time whether more than described in the first processing module 130 When the judged result of one preset duration is no, or judge first moment with working as described in the Second processing module 140 The time difference at preceding moment whether more than the second preset duration judged result for be when, described device also includes：

Update module 150, it is current time for updating second moment.

Specifically, second judge module 210, is specifically used for：

It should be noted that herein, such as first and second or the like relational terms are used merely to a reality Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that Other identical element also be present in process, method, article or equipment including the key element.

Each embodiment in this specification is described by the way of related, identical similar portion between each embodiment Divide mutually referring to what each embodiment stressed is the difference with other embodiment.It is real especially for device For applying example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method Part explanation.

Can one of ordinary skill in the art will appreciate that realizing that all or part of step in above method embodiment is To instruct the hardware of correlation to complete by program, described program can be stored in computer read/write memory medium, The storage medium designated herein obtained, such as：ROM/RAM, magnetic disc, CD etc..

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention It is interior.

Claims

1. a kind of service state switching method, the equipment applied to destination service is configured with, it is characterised in that methods described bag Include：

The first mark recorded in target database and the first moment are read, wherein, described first is identified as in primary shape The mark of the service of state, first moment are the present service period initial time of the service in master state；

If identical, the service state for judging the destination service is master state, and judge first moment with it is current when Whether the time difference at quarter is more than the first preset duration；If it is, the service state for switching the destination service is stand-by state；If It is no, it is current time to update first moment；

If it is not the same, the service state for judging the destination service is stand-by state, and judge first moment with it is current Whether the time difference at moment is more than the second preset duration；If it is, the service state for switching the destination service is master state, It is current time to update first moment, and renewal described first is identified as second mark, wherein, described second it is default when Length is not less than first preset duration.

2. according to the method for claim 1, it is characterised in that methods described also includes：

If off the second moment and current time of local record being contrasted, if the time at second moment and current time Difference exceedes first preset duration, and the service state for switching the destination service is stand-by state, wherein, second moment For the present service period initial time of the service in master state；

The time difference for judging first moment and current time whether more than the first preset duration judged result be it is no, Or whether the time difference for judging first moment and current time is yes more than the judged result of the second preset duration When, methods described also includes：

It is current time to update second moment.

3. according to the method for claim 2, it is characterised in that the service state according to local record, described in judgement Whether the service state of destination service is master state, including：

According to the default cycle very first time and the service state of local record, the service of the destination service is periodically judged Whether state is master state；Wherein, the cycle very first time is less than first preset duration, second preset duration Not less than first preset duration and the cycle very first time sum.

4. according to the method for claim 1, it is characterised in that it is described read target database in record first mark with And first moment, including：

Based on default second time cycle, the first mark and first recorded in the target database is periodically read Moment, wherein, second time cycle is less than first preset duration, and second preset duration is not less than described first Preset duration and the second time cycle sum.

5. according to the method for claim 1, it is characterised in that do not record the first of main service in the target database When mark and the first moment, methods described also includes：

Using described second mark as described first identify, will current time as first moment, write the number of targets According to storehouse；

The service state for switching the destination service is master state.

6. according to the method described in any one of Claims 1 to 5, it is characterised in that first mark and second mark Knowledge includes：The port information of corresponding with service and the IP address information of equipment.

7. a kind of service state switching device, the equipment applied to destination service is configured with, it is characterised in that described device bag Include：

Read module, for reading the recorded in target database first mark and the first moment, wherein, first mark For the mark of the service in master state, first moment originates for the present service period of the service in master state Moment；

First processing module, in the case of being in the judged result of first judge module, judge the target clothes The service state of business is master state, and judge first moment and current time time difference it is whether default more than first when It is long；If it is, the service state for switching the destination service is stand-by state；If it has not, renewal first moment is current Moment；

Second processing module, in the case of being no in the judged result of first judge module, judge the target clothes The service state of business is stand-by state, and judge first moment and current time time difference it is whether default more than second when It is long；If it is, the service state for switching the destination service is master state, it is current time to update first moment, more New described first is identified as second mark, wherein, second preset duration is not less than first preset duration.

8. device according to claim 7, it is characterised in that described device also includes：

Second judge module, for the service state according to local record, judge the destination service service state whether be Master state；

3rd judge module, in the case of being in the judged result of second judge module, judge the target clothes Whether business and the network connection of the target database disconnect；If do not disconnected, the read module is triggered；If off right Than the second moment of local record and current time, if the time difference at second moment and current time is pre- more than described first If duration, the service state for switching the destination service is stand-by state, wherein, second moment is in master state The present service period initial time of service；

Judge whether the time difference at first moment and current time is default more than first described in the first processing module The judged result of duration for it is no when, or judge described in the Second processing module first moment and current time when Between difference whether more than the second preset duration judged result for be when, described device also includes：

Update module, it is current time for updating second moment.

9. device according to claim 8, it is characterised in that second judge module, be specifically used for：

10. device according to claim 7, it is characterised in that the read module, be specifically used for：

11. device according to claim 7, it is characterised in that do not record the of main service in the target database When one mark and the first moment, described device also includes：

Writing module, for using described second mark as described first identify, will current time as first moment, write Enter the target database；

12. according to the device described in any one of claim 7~11, it is characterised in that first mark and described second Mark includes：The port information of corresponding with service and the IP address information of equipment.