CN102710554A - Distributed message system and service status detection method thereof - Google Patents
Distributed message system and service status detection method thereof Download PDFInfo
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Abstract
The invention provides a distributed message system, which comprises a server, a client side and a zookeeper cluster, wherein the server comprises a server communication unit which is used for transmitting the starting information of a server progress to the zookeeper cluster; the zookeeper cluster comprises a node management unit which is used for creating a corresponding sub-node for the started server progress on the created root node, and the sub-node is a temporary node; the client side comprises a client side communication unit and a judgment unit, wherein the client side communication unit is used for acquiring the creation situation of the sub-node from the zookeeper cluster; and the judgment unit is used for judging the current usable service of the server according to the creation situation of the sub-node. The invention also correspondently provides a service status detection method of the distributed message system. Due to the adoption of the technical scheme of the invention, a highly available communication platform based on the zookeeper is established, so that the resource consumption of the server for the heartbeat detection can be reduced, and the vast expenditure problem of the management caused by the increased service can be fundamentally solved.
Description
Technical field
The present invention relates to communication technique field, in particular to the service state detection method of a kind of distributed message system and a kind of distributed message system.
Background technology
When writing the Distributed Calculation application; Tend to occur " part failure " (partial failure); Promptly when a piece of news transmitted between two nodes in network, if network error, the sender can't know whether the recipient has received this message.The recipient possibly just receive message before network error occurring, also might not receive, or receiving process is died.The unique channel that the sender can obtain truth is exactly to connect the recipient again, and sends inquiry to it.Part failure that Here it is: promptly we do not know even whether an operation fails.
The solution of current trend mainly is a heartbeat detection, and promptly the provider of service keeps certain being connected with consumption side, and the timed sending heartbeat packet judges whether the other side is online; If can not receive heartbeat packet within a certain period of time; Judge that then the other side is not online, also just no longer asked the other side's service, if the other side has reached the standard grade; Then heartbeat detection is recovered, and just can continue to ask to have served to the other side.Heartbeat detection mainly is that service end consumption side initiates now, and it is passive corresponding serving the provider.The drawback of doing like this is that the expense of provider on heartbeat detection of service is very big so if the consumption side of service increases, and serious meeting influences the normal operation of system.
Therefore, need a kind of new service state detection technique, can reduce the resource consumption of service end on heartbeat detection, the service that fundamentally solved increases the great expense incurred of bringing in the management.
Summary of the invention
The present invention just is being based on the problems referred to above, has proposed a kind of new service state detection technique, can reduce the resource consumption of service end on heartbeat detection, and the service that fundamentally solved increases the great expense incurred of bringing in the management.
In view of this; The present invention proposes a kind of distributed message system, comprising: service end, client and Zookeeper cluster, wherein; Said service end comprises: the server communication unit is used for the log-on message of service processes is sent to said Zookeeper cluster; Said Zookeeper cluster comprises: the node administration unit, be used at the root node of having created, and set up corresponding child node for the said service processes that starts, said child node is interim node; Said client comprises: the client communication unit is used for obtaining from said Zookeeper cluster the situation of setting up of said child node; Judging unit is used for the situation of setting up according to said child node, judges the current available service of said service end.
In this technical scheme, Zookeeper is meant a distributed service framework by Apache Software Foundation (be Apache Software Foundation, be called for short ASF) exploitation.Through by the service state Spoke-to-Client end of Zookeeper cluster with service end; Need not between client and service end, to carry out heartbeat detection; Thereby for service end has been saved related resource consumption; Especially under the situation with a large amount of clients, the structure and the management of service end have obviously greatly been simplified.Need to prove; Service end here and client are not refered in particular to server and terminal; Such as the portable terminal of existing carrier server and user's use, when needs provided service by carrier server, carrier server was as service end; When needs provide when service (for example by carrier server to the portable terminal PUSH message) by portable terminal, then portable terminal is as service end.
In technique scheme, preferably, said Zookeeper cluster also comprises: whether the process status detecting unit is used to detect said service processes and interrupts; Said node administration unit also is used for: when said service processes interrupted, deletion was corresponding to the child node of said service processes; Said judging unit also is used for: according to the situation of setting up and/or the deletion situation of said child node, judge the current available service of said service end.
In this technical scheme, during the service state generation real-time change of service end,, make client can grasp the real-time change of this state in real time through the management of Zookeeper cluster.
Whether in technique scheme, preferably, each said service processes disposes the service end communication part, and then said process status detecting unit is used for: through keeping heartbeat detection with said service end communication part, interrupt to judge said service processes.
In this technical scheme, through adopting centralized heartbeat management, thereby fundamentally solving the great expense incurred of bringing on service increases to management.
In technique scheme, preferably, the said log-on message that said server communication unit is sent to said Zookeeper cluster comprises the IP address and the port numbers of said service processes, to be used for said client and said service end connects.
In this technical scheme,, connect in the service time spent but be convenient to client through with information notification clients such as IP address, port numbers.
In technique scheme, preferably, said client also comprises: the unit is set up in tabulation, the current available service of said service end that obtains according to said judgment unit judges, but set up corresponding service list.
In this technical scheme, but through client with current available service log in service list, be convenient to available service process inquiry and set up corresponding the connection.
According to another aspect of the invention, also proposed the service state detection method of a kind of distributed message system, having comprised: step 202, service end is sent to the Zookeeper cluster with the log-on message of service processes; Step 204, said Zookeeper cluster are set up corresponding child node for the said service processes that starts on the root node of having created, said child node is interim node; Step 206, client is judged the current available service of said service end according to the situation of setting up of the said child node of obtaining from said Zookeeper cluster.
In this technical scheme; Through by the service state Spoke-to-Client end of Zookeeper cluster with service end; Need not between client and service end, to carry out heartbeat detection; Thereby,, the structure and the management of service end have obviously greatly been simplified especially under the situation with a large amount of clients for service end has been saved related resource consumption.Need to prove; Service end here and client are not refered in particular to server and terminal; Such as the portable terminal of existing carrier server and user's use, when needs provided service by carrier server, carrier server was as service end; When needs provide when service (for example by carrier server to the portable terminal PUSH message) by portable terminal, then portable terminal is as service end.
In technique scheme, preferably, said step 204 also comprises: when said service processes interrupted, said Zookeeper cluster deletion was corresponding to the child node of said service processes; And said step 206 also comprises: said client is judged the current available service of said service end according to the situation of setting up and/or the deletion situation of said child node.
In this technical scheme, during the service state generation real-time change of service end,, make client can grasp the real-time change of this state in real time through the management of Zookeeper cluster.
In technique scheme, preferably, each said service processes disposes the service end communication part; Whether said Zookeeper cluster and said service end communication part are kept heartbeat detection, interrupt to judge said service processes.
In this technical scheme, through adopting centralized heartbeat management, thereby fundamentally solving the great expense incurred of bringing on service increases to management.
In technique scheme, preferably, said log-on message comprises the IP address and the port numbers of said service processes, to be used for said client and said service end connects.
In this technical scheme,, connect in the service time spent but be convenient to client through with information notification clients such as IP address, port numbers.
In technique scheme, preferably, said step 206 also comprises: the current available service of said service end that said client obtains according to judgement, but set up corresponding service list.
In this technical scheme, but through client with current available service log in service list, be convenient to available service process inquiry and set up corresponding the connection.
Through above technical scheme, can reduce the resource consumption of service end on heartbeat detection, the service that fundamentally solved increases the great expense incurred of bringing in the management.
Description of drawings
Fig. 1 shows the block diagram of distributed message system according to an embodiment of the invention;
Fig. 2 shows the flow chart of the service state detection method of distributed message system according to an embodiment of the invention;
Fig. 3 shows the integrated stand composition of distributed message system according to an embodiment of the invention;
Fig. 4 A and Fig. 4 B show the communication sketch map of service end according to an embodiment of the invention;
Fig. 5 A and Fig. 5 B show the communication sketch map of client according to an embodiment of the invention.
Embodiment
In order more to be expressly understood above-mentioned purpose of the present invention, feature and advantage, the present invention is further described in detail below in conjunction with accompanying drawing and embodiment.Need to prove that under the situation of not conflicting, the application's embodiment and the characteristic among the embodiment can make up each other.
A lot of details have been set forth in the following description so that make much of the present invention; But; The present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention does not receive the restriction of following disclosed specific embodiment.
Fig. 1 shows the block diagram of distributed message system according to an embodiment of the invention.
As shown in Figure 1; Distributed message system according to an embodiment of the invention comprises: service end 102, client 106 and Zookeeper cluster 104, wherein; Service end 102 comprises: server communication unit 1020 is used for the log-on message of service processes is sent to Zookeeper cluster 104; Zookeeper cluster 104 comprises: node administration unit 1040, be used at the root node of having created, and set up corresponding child node for the service processes that starts, this child node is interim node; Client 106 comprises: client communication unit 1060 is used for obtaining from Zookeeper cluster 104 situation of setting up of child node; Judging unit 1062 is used for the situation of setting up according to child node, judges service end 102 current available services.
In this technical scheme, Zookeeper is meant a distributed service framework by Apache Software Foundation (be Apache Software Foundation, be called for short ASF) exploitation.Through by the service state Spoke-to-Client end 106 of Zookeeper cluster 104 with service end 102; Need not between client 106 and service end 102, to carry out heartbeat detection; Thereby saved related resource consumption for service end 102; Especially under the situation with a large amount of clients 106, the structure and the management of service end 102 have obviously greatly been simplified.Need to prove; The service end 102 is not here refered in particular to server and terminal with client 106; Such as the portable terminal of existing carrier server and user's use, when needs provided service by carrier server, carrier server was as service end 102; When needs provide when service (for example by carrier server to the portable terminal PUSH message) by portable terminal, then portable terminal is as service end 102.
In technique scheme, Zookeeper cluster 104 also comprises: whether process status detecting unit 1042 is used to detect service processes and interrupts; Node administration unit 1040 also is used for: when service processes interrupted, deletion was corresponding to the child node of service processes; Judging unit 1062 also is used for: according to the situation of setting up and/or the deletion situation of child node, judge service end 102 current available services.
In this technical scheme, during the service state generation real-time change of service end 102,, make client 106 can grasp the real-time change of this state in real time through the management of Zookeeper cluster 104.
Whether in technique scheme, each service processes disposes the service end communication part, and then process status detecting unit 1042 is used for: through keeping heartbeat detection with the service end communication part, interrupt to judge service processes.
In this technical scheme, through adopting centralized heartbeat management, thereby fundamentally solving the great expense incurred of bringing on service increases to management.
In technique scheme, the log-on message that server communication unit 1020 is sent to Zookeeper cluster 104 comprises the IP address and the port numbers of service processes, connects with service end 102 to be used for client 106.
In this technical scheme,, connect in the service time spent but be convenient to client 106 through with information notification clients 106 such as IP address, port numbers.
In technique scheme, client 106 also comprises: unit 1064 is set up in tabulation, judges the service end 102 current available services that obtain according to judging unit 1062, but sets up corresponding service list.
In this technical scheme, but through client 106 with current available service log in service list, be convenient to available service process inquiry and set up corresponding the connection.
Fig. 2 shows the flow chart of the service state detection method of distributed message system according to an embodiment of the invention.
As shown in Figure 2, the service state detection method of distributed message system according to an embodiment of the invention comprises: step 202, and service end is sent to the Zookeeper cluster with the log-on message of service processes; Step 204, Zookeeper cluster are set up corresponding child node for the service processes that starts on the root node of having created, this child node is interim node; Step 206, client are judged the current available service of service end according to the situation of setting up of the child node of obtaining from the Zookeeper cluster.
In this technical scheme; Through by the service state Spoke-to-Client end of Zookeeper cluster with service end; Need not between client and service end, to carry out heartbeat detection; Thereby,, the structure and the management of service end have obviously greatly been simplified especially under the situation with a large amount of clients for service end has been saved related resource consumption.Need to prove; Service end here and client are not refered in particular to server and terminal; Such as the portable terminal of existing carrier server and user's use, when needs provided service by carrier server, carrier server was as service end; When needs provide when service (for example by carrier server to the portable terminal PUSH message) by portable terminal, then portable terminal is as service end.
In technique scheme, step 204 also comprises: when service processes interrupted, the deletion of Zookeeper cluster was corresponding to the child node of service processes; And step 206 also comprises: client is judged the current available service of service end according to the situation of setting up and/or the deletion situation of child node.
In this technical scheme, during the service state generation real-time change of service end,, make client can grasp the real-time change of this state in real time through the management of Zookeeper cluster.
In technique scheme, each service processes disposes the service end communication part; Whether Zookeeper cluster and service end communication part are kept heartbeat detection, interrupt to judge service processes.
In this technical scheme, through adopting centralized heartbeat management, thereby fundamentally solving the great expense incurred of bringing on service increases to management.
In technique scheme, log-on message comprises the IP address and the port numbers of service processes, to be used for client and service end connects.
In this technical scheme,, connect in the service time spent but be convenient to client through with information notification clients such as IP address, port numbers.
In technique scheme, step 206 also comprises: the current available service of service end that client obtains according to judgement, but set up corresponding service list.
In this technical scheme, but through client with current available service log in service list, be convenient to available service process inquiry and set up corresponding the connection.
Fig. 3 shows the integrated stand composition of distributed message system according to an embodiment of the invention.
Zookeeper safeguards node (being znode), and wherein, node is divided into interim node and lasting node, and node types is confirmed when creating and can not be revised afterwards again.The difference of these two kinds of nodes is: when the client session of creating interim znode finished, zookeeper can be with this interim znode deletion; By contrast, lasting znode does not rely on client session, has only when client clearly will be deleted this lasting znode, and lasting znode just can be deleted; And of short duration znode cannot have child node.
As shown in Figure 3; Can be on the root node that the Zookeeper cluster has been created; For each computing node is created corresponding child node, like child node 1, child node 2, child node 3 ... Particularly, the value in these child nodes (being value) can be the IP address of corresponding computing node.
Simultaneously, these child nodes all are interim node (EPHEMERAL), break off in case connect, and this interim node can be deleted by Zookeeper automatically.Because all computing nodes are in the same computing unit; And each is in the computing node in this computing unit; If still exist; Then certainly exist corresponding child node, then pay close attention to the machine of this root node and can judge which platform machine has left computing unit now, and know what computing nodes are arranged now in this computing unit through the situation of child node.
Simultaneously, if there is new computing node to add, the first step after corresponding service processes starts will arrive creates a node on the root node on the zookeeper cluster, and how the machine of then paying close attention to this root node all can know now a computing node.
In addition; Visible from figure; Every service processes of service end (form that comprises service cluster) has all embedded the service end communication part; Application end has embedded the client communication part, about the composition and the course of work of these two assemblies, is elaborated below in conjunction with Fig. 4 A and Fig. 4 B and Fig. 5 A and Fig. 5 B.
Fig. 4 A and Fig. 4 B show the communication sketch map of service end according to an embodiment of the invention.
Shown in Fig. 4 A, this service end communication part comprises rpc skeleton module, configuration reporting module and Zookeeper client, with the engagement process of zookeeper cluster shown in Fig. 4 B:
1, the startup of the service in the service end is reached the standard grade.
2, responsible and client is carried out the also startup simultaneously of rpc skeleton module of rpc communication.
3, log-on message (the IP address and the port numbers that comprise service end) is reported the zookeeper cluster through the configuration reporting module.
4, the Zookeeper client reports log-on message to the Zookeeper cluster.
5, the Zookeeper cluster is interim node of service generation of this startup, upgrades the nodal information that exists simultaneously.Service end communication part and zookeeper cluster are kept heartbeat detection, in case service processes withdraws from, this interim node will be deleted.
So far service starts and finishes, and the zookeeper cluster has been safeguarded the configuration of all service ends.
Fig. 5 A and Fig. 5 B show the communication sketch map of client according to an embodiment of the invention.
Shown in Fig. 5 A, this client communication part comprises tabulation of rpc stub module, available server and Zookeeper client, with the engagement process of zookeeper cluster shown in Fig. 5 B:
1, the zookeeper cluster reports the Zookeeper client in the client communication part after obtaining the service end modification information.
2, client is according to this service end modification information, update service freelist.
3, client is obtained the information of available service end from the service end modification information, comprises IP address and port numbers etc. in the above-mentioned log-on message, connects then, prepares to carry out communication with service end.
4, client is carried out communication through rpc stub module with service end (being specially the rpc skeleton module shown in Fig. 4 A), accomplishes the rpc far call.
The rpc far call here can be arbitrary form, and such as the protocolbuffer of Google, the more popular rpc that increase income such as the Thrift of apache or hessian call framework can.
More than be described with reference to the accompanying drawings technical scheme of the present invention; Consider in the correlation technique; The expense of provider on heartbeat detection of service is very big, and serious meeting influences the normal operation of system, the invention provides the service state detection method of a kind of distributed message system and a kind of distributed message system; Can reduce the resource consumption of service end on heartbeat detection, the service that fundamentally solved increases the great expense incurred of bringing in the management.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a distributed message system is characterized in that, comprising:
Service end, client and Zookeeper cluster, wherein,
Said service end comprises:
The server communication unit is used for the log-on message of service processes is sent to said Zookeeper cluster;
Said Zookeeper cluster comprises:
The node administration unit is used at the root node of having created, sets up corresponding child node for the said service processes that starts, and said child node is interim node;
Said client comprises:
The client communication unit is used for obtaining from said Zookeeper cluster the situation of setting up of said child node;
Judging unit is used for the situation of setting up according to said child node, judges the current available service of said service end.
2. distributed message according to claim 1 system is characterized in that,
Said Zookeeper cluster also comprises: whether the process status detecting unit is used to detect said service processes and interrupts;
Said node administration unit also is used for: when said service processes interrupted, deletion was corresponding to the child node of said service processes;
Said judging unit also is used for: according to the situation of setting up and/or the deletion situation of said child node, judge the current available service of said service end.
3. distributed message according to claim 2 system; It is characterized in that; Each said service processes disposes the service end communication part; Whether then said process status detecting unit is used for: through keeping heartbeat detection with said service end communication part, interrupt to judge said service processes.
4. according to each described distributed message system in the claim 1 to 3; It is characterized in that; The said log-on message that said server communication unit is sent to said Zookeeper cluster comprises the IP address and the port numbers of said service processes, to be used for said client and said service end connects.
5. according to each described distributed message system in the claim 1 to 3, it is characterized in that said client also comprises:
The unit is set up in tabulation, the current available service of said service end that obtains according to said judgment unit judges, but set up corresponding service list.
6. the service state detection method of a distributed message system is characterized in that, comprising:
Step 202, service end is sent to the Zookeeper cluster with the log-on message of service processes;
Step 204, said Zookeeper cluster are set up corresponding child node for the said service processes that starts on the root node of having created, said child node is interim node;
Step 206, client is judged the current available service of said service end according to the situation of setting up of the said child node of obtaining from said Zookeeper cluster.
7. the service state detection method of distributed message according to claim 6 system is characterized in that said step 204 also comprises: when said service processes interrupted, said Zookeeper cluster deletion was corresponding to the child node of said service processes; And
Said step 206 also comprises: said client is judged the current available service of said service end according to the situation of setting up and/or the deletion situation of said child node.
8. the service state detection method of distributed message according to claim 7 system is characterized in that each said service processes disposes the service end communication part;
Whether said Zookeeper cluster and said service end communication part are kept heartbeat detection, interrupt to judge said service processes.
9. according to the service state detection method of each described distributed message system in the claim 6 to 8, it is characterized in that said log-on message comprises the IP address and the port numbers of said service processes, to be used for said client and said service end connects.
10. according to the service state detection method of each described distributed message system in the claim 6 to 8, it is characterized in that said step 206 also comprises:
The current available service of said service end that said client obtains according to judgement, but corresponding service list set up.
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