CN113268466A - Method and system for smoothly migrating message cluster - Google Patents
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Abstract
The invention discloses a method and a system for smoothly migrating a message cluster, relates to the technical field of Internet, and solves the problem that the connection of a client cannot be smoothly switched in the cluster migration process. The method comprises the following steps: acquiring an original cluster connected before migration of a consumer application and a producer application and a target cluster connected after migration; the consumer application establishes target consumer threads which are in one-to-one correspondence with the original consumer threads according to the configuration items of the target clusters and is connected with the target clusters, and the producer application switches from producing messages to the original clusters to producing messages to the target clusters; and switching to the target cluster to consume the message when the consumer application monitors that the original cluster has no message accumulation and no new message enters. The system runs the method provided by the scheme.
Description
Technical Field
The invention relates to the technical field of internet, in particular to a method and a system for smoothly migrating a message cluster.
Background
The migration process for a cluster of message systems typically includes metadata reconstruction, data migration, and switching of client connections. For a homogeneous message system cluster, such as a Kafka cluster, although an official can provide assisted migration of the karfka MirrorMaker service, since official documents are not updated for a long time, some parameters, characteristics and the like added to the karfka MirrorMaker by a new version of the karfka are often not found in the documents, and deep research on source code browsing is needed, so that the migration use mode is not flexible enough, and a function of client connection switching cannot be provided; no related cluster migration corollary component is provided in the RockketMQ cluster; in the RabbitMQ, plug-ins like Federation and Shovel are provided to assist in cluster migration, but metadata and message data migration are more emphasized, and message loss is usually caused in the implementation. For heterogeneous message system clusters, related migration schemes are rarely available in the prior art, and generally, engineers directly modify system codes to perform offline migration, and good characteristic compatibility is performed on two different types of message clusters.
Therefore, the message system cluster migration scheme in the prior art is not only complex in operation, but also cannot realize smooth switching of client connection, and user experience is poor.
Disclosure of Invention
The invention aims to provide a method and a system for smoothly migrating a message cluster, which solve the problem that the connection of a client cannot be smoothly switched in the cluster migration process.
In order to achieve the above object, a first aspect of the present invention provides a method for smoothly migrating a message cluster, including:
acquiring an original cluster connected before migration of a consumer application and a producer application and a target cluster connected after migration;
the consumer application establishes target consumer threads which are in one-to-one correspondence with the original consumer threads according to the configuration items of the target clusters and is connected with the target clusters, and the producer application switches from producing messages to the original clusters to producing messages to the target clusters;
and switching to the target cluster to consume the message when the consumer application monitors that the original cluster has no message accumulation and no new message enters.
Preferably, before acquiring the original cluster connected before the migration of the consumer application and the producer application and the target cluster connected after the migration, the method further comprises:
and the consumer application establishes original consumer threads which correspond to the original clusters one by one according to the on-off states of the consumer threads in the original clusters and connects the original clusters.
Preferably, the method for establishing, by the consumer application, the target consumer threads corresponding to the original consumer threads one to one according to the configuration items of the target cluster and connecting with the target cluster includes:
the consumer application reads the on-off state of the consumer application in the target cluster from the online environment;
when the consumer application is in an on state and the configuration items of the target cluster are loaded, the consumer application establishes target consumer threads corresponding to the original consumer threads one by one on the basis of the configuration items of the target cluster;
and linking each target consumer thread with the target cluster in a one-to-one correspondence mode.
Preferably, the consumer application and the producer application are integrated with the SDK plug-ins corresponding to the original cluster and the target cluster, and the SDK plug-ins have a single-reading or multi-reading function for the original cluster and/or the target cluster;
the function of single or multiple reads depends on the consumer application switch state in the original or target cluster.
Further, the method for switching a producer application from producing a message to an original cluster to producing a message to a target cluster comprises:
when the consumer application establishes a target consumer thread and is successfully connected with the target cluster in a one-to-one correspondence manner, switching the state of a producer application switch in the original cluster to be closed and switching the state of the producer application switch in the target cluster to be opened;
the producer application disconnects from the original cluster and switches to connect with the target cluster.
Preferably, when the consumer application monitors that the original cluster has no message accumulation and no new message enters, the method for switching to the target cluster to consume the message comprises the following steps:
the method comprises the steps that the message accumulation condition of an original cluster and the new message entering condition are monitored in real time through a consumer application, when the original cluster has no message accumulation and no new message enters, the state of a consumer application switch in the original cluster is switched to be closed, and the state of the consumer application switch in a target cluster is continuously kept to be opened.
Illustratively, the original cluster is one or more of Kafka, rocktmq, RabbitMQ, and the target cluster is one or more of Kafka, rocktmq, RabbitMQ.
Compared with the prior art, the message cluster smooth migration method provided by the invention has the following beneficial effects:
the smooth migration method of the message cluster comprises the steps of firstly obtaining an original cluster connected with a consumer application and a producer application before migration and a target cluster connected with the original cluster after migration, then establishing target consumer threads corresponding to the original consumer threads one by the consumer application according to configuration items of the target cluster and connecting the target consumer threads with the target cluster, and simultaneously switching the producer application from producing messages to the original cluster to producing messages to the target cluster until the consumer application monitors that no messages are accumulated in the original cluster and no new messages enter the original cluster.
Therefore, the invention not only can directly complete the migration of the message metadata and the cluster message, but also can realize the smooth switching of the client between the original cluster and the target cluster through the establishment of the target consumer thread, the whole migration process does not need to be stopped and restarted, and the performance burden can not be added to the current cluster due to the fact that no auxiliary plug-in is used, thereby improving the user experience of cluster migration to a greater extent.
A second aspect of the present invention provides a system for smoothly migrating a message cluster, which is applied to the method for smoothly migrating a message cluster in the foregoing technical solution, and the system includes:
the migration acquisition unit is used for acquiring an original cluster connected before the migration of the consumer application and the producer application and a target cluster connected after the migration;
the production switching unit is used for establishing target consumer threads which correspond to the original consumer threads one by the consumer application according to the configuration items of the target clusters and connecting the target consumer threads with the target clusters, and the producer application switches the production information to the original cluster to the production information to the target cluster;
and the target switching unit is used for switching to the target cluster consumption message when the consumer application monitors that no message is accumulated in the original cluster and no new message enters.
Preferably, the production switching unit includes:
the reading module is used for reading the on-off state of the consumer application in the target cluster from the online environment by the consumer application;
the thread newly-built module is used for establishing target consumer threads which are in one-to-one correspondence with the original consumer threads on the basis of the configuration items of the target clusters by the consumer application when the on-off state of the consumer application is opened and the configuration items of the target clusters are loaded;
and the access module is used for linking each target consumer thread with the target cluster in a one-to-one correspondence manner.
Compared with the prior art, the beneficial effect of the message cluster smooth migration system provided by the invention is the same as that of the message cluster smooth migration method provided by the technical scheme, and the details are not repeated herein.
A third aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, performs the steps of the message cluster smooth migration method.
Compared with the prior art, the beneficial effect of the computer-readable storage medium provided by the invention is the same as that of the message cluster smooth migration method provided by the technical scheme, and details are not repeated herein.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow chart of a message cluster smooth migration method in an embodiment of the present invention;
FIG. 2 is a diagram illustrating a consumer application reading both an original cluster and a target cluster in accordance with an embodiment of the present invention;
FIG. 3 is a diagram illustrating a consumer application read-only target cluster in an embodiment of the invention;
FIG. 4 is a diagram illustrating a producer application reading both an original cluster and a target cluster in accordance with an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a process of switching a producer application from an original cluster to a target cluster according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a producer application single-read target cluster in the embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, the present embodiment provides a method for smoothly migrating a message cluster, including:
acquiring an original cluster connected before migration of a consumer application and a producer application and a target cluster connected after migration; the consumer application establishes target consumer threads which are in one-to-one correspondence with the original consumer threads according to the configuration items of the target clusters and is connected with the target clusters, and the producer application switches from producing messages to the original clusters to producing messages to the target clusters; and switching to the target cluster to consume the message when the consumer application monitors that the original cluster has no message accumulation and no new message enters.
In the message cluster smooth migration method provided in this embodiment, first, an original cluster connected before migration of a consumer application and a producer application and a target cluster connected after migration are obtained, then the consumer application establishes target consumer threads corresponding to the original consumer threads one to one according to configuration items of the target clusters and connects the target clusters, and at the same time, the producer application switches from producing messages to the original cluster to producing messages to the target cluster until the consumer application switches to consuming messages to the target cluster when monitoring that no messages are accumulated in the original cluster and no new messages enter.
Therefore, the migration of the message metadata and the cluster message can be directly completed, the smooth switching of the client between the original cluster and the target cluster can be realized through the establishment of the target consumer thread, the whole migration process does not need to be stopped and restarted, the performance burden cannot be added to the current cluster due to the fact that the auxiliary plug-in is not used, and the user experience of the cluster migration is greatly improved.
In the above embodiment, before acquiring the original cluster connected before the migration of the consumer application and the producer application and the target cluster connected after the migration, the method further includes:
and the consumer application establishes original consumer threads which correspond to the original clusters one by one according to the on-off states of the consumer threads in the original clusters and connects the original clusters.
In specific implementation, the consumer application establishes a connection relationship with the original clusters through the original consumer threads before migration, and it can be understood that the number of the original consumer threads is equal to the number of the connected original clusters, and the original consumer threads are in a one-to-one correspondence relationship, and each original consumer thread acquires consumption information from the corresponding original cluster. For ease of understanding, the present embodiment is illustrated by the following example:
referring to fig. 2 and 3, the number of original clusters is 3, corresponding to RabbitMQ-01, RabbitMQ-02 and RabbitMQ-03 respectively, the number of original Consumer threads in Consumer applications is also 3, corresponding to Consumer01, Consumer02 and Consumer03 respectively, such that Consumer01 consumes messages of RabbitMQ-01, consummer 02 consumes messages of RabbitMQ-02, consummer 03 consumes messages of RabbitMQ-03, and the number of target clusters is 1, which may be any one of Kafka, rocktmq and RabbitMQ.
In the above embodiment, the method for establishing, by the consumer application, the target consumer threads corresponding to the original consumer threads one to one according to the configuration items of the target cluster and connecting with the target cluster includes:
the consumer application reads the on-off state of the consumer application in the target cluster from the online environment; when the consumer application is in an on state and the configuration items of the target cluster are loaded, the consumer application establishes target consumer threads corresponding to the original consumer threads one by one on the basis of the configuration items of the target cluster; and linking each target consumer thread with the target cluster in a one-to-one correspondence mode.
In the above embodiment, the consumer application and the producer application are integrated with the SDK plug-in corresponding to the original cluster and the target cluster, and the SDK plug-in has a single-read or multi-read function for the original cluster and/or the target cluster; the function of read-only or read-many depends on the consumer application switch state in the original cluster or the target cluster.
Referring to fig. 2, in a specific implementation, the Consumer application and the producer application each integrate SDK plug-ins of corresponding types including an original cluster and a target cluster, and in a unified message middleware framework, the Consumer application can read a switch state of the Consumer application in the target cluster from an Environment in the Environment, when the target cluster receives a migration instruction, the switch of the Consumer application is opened and a configuration item of the target cluster is automatically loaded, an XML node configured by the Consumer application is parsed, and a related Consumer object instance a is created, and an object instance a ' of the same configuration is created at the same time, the object instance a corresponds to an original Consumer thread Consumer01, a Consumer02, and a Consumer03, the object instance a ' corresponds to a target Consumer thread consummer 01 ', a Consumer02 ', and a Consumer03 ', the original Consumer threads are respectively connected to the original cluster in a one-to-one manner, and the target Consumer threads are respectively connected to the target cluster, the target cluster is 1 new MQ, if the Consumer application switch of a cluster is closed, the Consumer thread automatically disconnects from the corresponding cluster, as shown in fig. 3, after RabbitMQ-01, RabbitMQ-02 and RabbitMQ-03 of the original cluster are closed, the connection relationships among concumer 01, concumer 02 and concumer 03 are disconnected, and only concumer 01 ', concumer 02 ' and concumer 03 ' respectively keep connection with the new MQ.
It is understood that a single read of a consumer/producer application refers to connecting only one original cluster or one target cluster, and a multiple read of a consumer/producer application, such as a double read, refers to connecting one original cluster and one target cluster. In the embodiment, in the scheme of migrating the three sets of RabbitMQ original clusters to the new MQ target cluster, the double-reading or multi-reading function of the new MQ and one or more RabbitMQs is realized by modifying the parsing process of ListenerContainerParser in the SDK plug-in.
In the above embodiment, the method for switching from producing a message to an original cluster to producing a message to a target cluster by a producer application includes:
when the consumer application establishes a target consumer thread and is successfully connected with the target cluster in a one-to-one correspondence manner, switching the state of a producer application switch in the original cluster to be closed and switching the state of the producer application switch in the target cluster to be opened; the producer application disconnects from the original cluster and switches to connect with the target cluster.
As shown in fig. 4 to fig. 6, in specific implementation, the state of the producer application switch in the original cluster is switched to off, and then the corresponding producer application cannot continue to produce the message for the original cluster, and similarly, the state of the producer application switch in the target cluster is switched to on, and then the corresponding producer application can produce the message for the target cluster, and at this time, the producer application can disconnect from the original cluster and switch to connect with the target cluster. Illustratively, the producer application switch or the consumer application switch may be an AMPQ consumption switch of alisma.
It is understood that the switch control of the producer application switch or the consumer application switch and the new creation of the target consumer thread can be realized by developing an enhancement device, and the functions mentioned in the above embodiments can be realized by integrating the enhancement device into the producer application or the consumer application respectively.
In the above embodiment, when the consumer application monitors that there is no message accumulation in the original cluster and no new message enters, the method for switching to the target cluster to consume the message includes:
the method comprises the steps that the message accumulation condition of an original cluster and the new message entering condition are monitored in real time through a consumer application, when the original cluster has no message accumulation and no new message enters, the state of a consumer application switch in the original cluster is switched to be closed, and the state of the consumer application switch in a target cluster is continuously kept to be opened.
The specific implementation is that the message accumulation condition of the original cluster and the entering condition of the new message are monitored by the consumer application, so that the consumer application can consume the message of the target cluster after consuming the message of the original cluster, and further the smooth switching of the client between the original cluster and the target cluster can be realized without stopping the machine.
In summary, the migration process of the above embodiment can be understood as being divided into the following three steps:
the first step is as follows: the consumer application double-reading means that the consumer application consumes the messages in the target cluster and the original cluster at the same time;
the second step is that: the producer application switches from producing the message to the original cluster to producing the message to the target cluster;
the third step: and when the original cluster has no information accumulation and no new information enters, switching the consumer application into the target cluster single reading.
1. The embodiment solves the problem that related message migration supporting devices are missing in the use of the message middleware product in the prior art, such as RocketMQ, MNS, SQS, Kinesis and the like.
2. The embodiment solves the problems that when a message middleware product in the prior art is used for message migration, the message volume is huge, the cluster pressure of a message server is large, and the service cannot be interrupted, for example, when a RabbitMQ cluster is used, a single cluster is difficult to reach and improve the service performance through the increase of cluster nodes after reaching a bottleneck, the cluster migration at the moment needs to restart the RabbitMQ server if using the existing Federation and Shovel components, the resource pressure of the RabbitMQ cluster is increased due to the introduction of the two components, and the migration of the message cluster needs to be carried out on the premise that the cluster is not stopped and the resource burden of the cluster is not increased.
3. The embodiment supports the migration implementation of heterogeneous message middleware clusters, such as between Kafka and RabbitMQ, between rocktmq and RabbitMQ, between Kafka and rocktmq, and the like, and shields the difference of different message service middleware, such as the technical architecture difference of message middleware services, and the like, through uniform interface abstraction.
Example two
The embodiment provides a system for smoothly migrating a message cluster, which includes:
the migration acquisition unit is used for acquiring an original cluster connected before the migration of the consumer application and the producer application and a target cluster connected after the migration;
the production switching unit is used for establishing target consumer threads which correspond to the original consumer threads one by the consumer application according to the configuration items of the target clusters and connecting the target consumer threads with the target clusters, and the producer application switches the production information to the original cluster to the production information to the target cluster;
and the target switching unit is used for switching to the target cluster consumption message when the consumer application monitors that no message is accumulated in the original cluster and no new message enters.
Preferably, the production switching unit includes:
the reading module is used for reading the on-off state of the consumer application in the target cluster from the online environment by the consumer application;
the thread newly-built module is used for establishing target consumer threads which are in one-to-one correspondence with the original consumer threads on the basis of the configuration items of the target clusters by the consumer application when the on-off state of the consumer application is opened and the configuration items of the target clusters are loaded;
and the access module is used for linking each target consumer thread with the target cluster in a one-to-one correspondence manner.
Compared with the prior art, the beneficial effect of the message cluster smooth migration system provided by the embodiment of the present invention is the same as that of the message cluster smooth migration method provided by the first embodiment, and details are not repeated here.
EXAMPLE III
The present embodiment provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to execute the steps of the message cluster smooth migration method.
Compared with the prior art, the beneficial effect of the computer-readable storage medium provided by this embodiment is the same as that of the message cluster smooth migration method provided by the above technical solution, and details are not repeated here.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the invention may be implemented by hardware instructions related to a program, the program may be stored in a computer-readable storage medium, and when executed, the program includes the steps of the method of the embodiment, and the storage medium may be: ROM/RAM, magnetic disks, optical disks, memory cards, and the like.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A method for smooth migration of message clusters, comprising:
acquiring an original cluster connected before migration of a consumer application and a producer application and a target cluster connected after migration;
the consumer application establishes target consumer threads which are in one-to-one correspondence with the original consumer threads according to the configuration items of the target clusters and is connected with the target clusters, and the producer application switches from producing messages to the original clusters to producing messages to the target clusters;
and switching to the target cluster to consume the message when the consumer application monitors that the original cluster has no message accumulation and no new message enters.
2. The method of claim 1, further comprising, prior to obtaining the original cluster connected before the migration of the consumer application and the producer application and the target cluster connected after the migration:
and the consumer application establishes original consumer threads which correspond to the original clusters one by one according to the on-off states of the consumer threads in the original clusters and connects the original clusters.
3. The method of claim 1, wherein the method for establishing, by the consumer application and in connection with the target cluster, the target consumer threads in one-to-one correspondence with the original consumer threads according to the configuration items of the target cluster comprises:
the consumer application reads the on-off state of the consumer application in the target cluster from the online environment;
when the consumer application is in an on state and the configuration items of the target cluster are loaded, the consumer application establishes target consumer threads corresponding to the original consumer threads one by one on the basis of the configuration items of the target cluster;
and linking each target consumer thread with the target cluster in a one-to-one correspondence mode.
4. The method of claim 3, wherein the consumer application and the producer application each integrate SDK plug-ins corresponding to the original cluster and the target cluster, and the SDK plug-ins have single-reading or multi-reading functions for the original cluster and/or the target cluster;
the function of single or multiple reads depends on the consumer application switch state in the original or target cluster.
5. The method of claim 4, wherein switching from producing messages to an original cluster to producing messages to a target cluster by a producer application comprises:
when the consumer application establishes a target consumer thread and is successfully connected with the target cluster in a one-to-one correspondence manner, switching the state of a producer application switch in the original cluster to be closed and switching the state of the producer application switch in the target cluster to be opened;
the producer application disconnects from the original cluster and switches to connect with the target cluster.
6. The method of claim 3, wherein the method of switching to a target cluster consuming message when the consumer application monitors that the original cluster has no message pile-up and no new message is incoming comprises:
the method comprises the steps that the message accumulation condition of an original cluster and the new message entering condition are monitored in real time through a consumer application, when the original cluster has no message accumulation and no new message enters, the state of a consumer application switch in the original cluster is switched to be closed, and the state of the consumer application switch in a target cluster is continuously kept to be opened.
7. The method according to any one of claims 1-6, wherein the original cluster is one or more of Kafka, RockattMQ, and RabbitMQ, and the target cluster is one or more of Kafka, RockattMQ, and RabbitMQ.
8. A system for smooth migration of message clusters, comprising:
the migration acquisition unit is used for acquiring an original cluster connected before the migration of the consumer application and the producer application and a target cluster connected after the migration;
the production switching unit is used for establishing target consumer threads which correspond to the original consumer threads one by the consumer application according to the configuration items of the target clusters and connecting the target consumer threads with the target clusters, and the producer application switches the production information to the original cluster to the production information to the target cluster;
and the target switching unit is used for switching to the target cluster consumption message when the consumer application monitors that no message is accumulated in the original cluster and no new message enters.
9. The system of claim 8, wherein the production switching unit comprises:
the reading module is used for reading the on-off state of the consumer application in the target cluster from the online environment by the consumer application;
the thread newly-built module is used for establishing target consumer threads which are in one-to-one correspondence with the original consumer threads on the basis of the configuration items of the target clusters by the consumer application when the on-off state of the consumer application is opened and the configuration items of the target clusters are loaded;
and the access module is used for linking each target consumer thread with the target cluster in a one-to-one correspondence manner.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of the claims 1 to 7.
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