CN112114881A - Online method and online system based on micro service - Google Patents
Online method and online system based on micro service Download PDFInfo
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- CN112114881A CN112114881A CN202010855995.5A CN202010855995A CN112114881A CN 112114881 A CN112114881 A CN 112114881A CN 202010855995 A CN202010855995 A CN 202010855995A CN 112114881 A CN112114881 A CN 112114881A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4403—Processor initialisation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/3668—Software testing
- G06F11/3672—Test management
- G06F11/3688—Test management for test execution, e.g. scheduling of test suites
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4416—Network booting; Remote initial program loading [RIPL]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4418—Suspend and resume; Hibernate and awake
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/445—Program loading or initiating
- G06F9/44505—Configuring for program initiating, e.g. using registry, configuration files
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/547—Remote procedure calls [RPC]; Web services
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- G06F2209/00—Indexing scheme relating to G06F9/00
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Abstract
The invention provides an online method and an online system based on micro-service, wherein the micro-service is a service calling mode, and the online method comprises the following steps: before the service is registered in the registration center, executing an initialization process of an application program corresponding to the service; after the initialization process is completed, registering the service to a registration center by using a method calling interface in a server, wherein the method calling interface is an interface without parameters; the client invokes a service registered with the registry. The technical scheme of the invention at least can ensure that the service can be truly and elegantly online.
Description
Technical Field
The invention relates to the technical field of computers and networks, in particular to an online method and an online system based on micro-services.
Background
Microservice is a service invocation pattern commonly used in enterprises. Opposite to microservices are monolithic applications, namely: all functions are packaged into an application program in a single unit. The main problem of the single application is that the maintenance is difficult, each small change needs the whole application program to be on-line, and the codes are mutually associated, so that the whole application is possibly unavailable due to a small problem. As more and more service lines are used, multiple monolithic applications are often created, each serving a different service. However, different services usually include functional modules with the same or similar functions, which causes problems such as repeated development of functions. In the micro-service architecture mode, an application is split into a plurality of small applications according to a function module, each of the small applications is responsible for a single responsibility, and the applications are independent from each other and generally interact with each other in a remote procedure call mode. Under the micro-service mode, each application module can be independently upgraded and maintained, and can be independently expanded and contracted during the peak and valley of the system, so that the system has good elasticity. However, to achieve this, a reliable up-down line approach is crucial, which should be able to make the traffic lossless, i.e.: there is no service interruption and no service exception. This process of going on and off the line without service interruption and without service exception can be referred to as "graceful going on and off the line".
Regarding the online process, the mutual calling among the existing micro services is mostly carried out in a remote process calling mode, a public registration center is needed in the remote process calling process, a service provider registers the service to the registration center after starting, and a service caller acquires a service provider list capable of providing the service through the registration center to complete the service calling. In this mode, registration of the service is usually performed automatically, and the application registers the service with the registry after being started, and it cannot be guaranteed that the application operates normally, so that a service call may fail. Common solutions include: request retry is carried out at a client, a gray scale distribution mode is adopted, abnormal service is removed through monitoring, and the like. The client side retries the request, namely when the client side fails to request the server side, the client side requests the server side again or for multiple times until the request is successful or the specified retrial times are exceeded. This can avoid certain request failure problems, but also can cause problems such as long service response time and repeated requests for services. The gray scale publishing mode is that when the service is published online, the control allows only a part of small-proportion flow or flow request meeting certain characteristics to a newly published service end, and after the flow is verified to pass, the flow is gradually released until all the flow enters the newly published service. The grayscale publishing mode can well control the impact range of anomalies but still cannot avoid service anomalies. The method for removing abnormal services through monitoring is another automatic or semi-automatic fault-tolerant mechanism, some monitoring indexes can be defined when each service is on line, and the service which is just on line is automatically off line when the monitoring indexes are abnormal, so that the overall availability of the service is maintained. However, the setting of the monitoring index is not so easy, and if the setting is not good, the judgment is easy to miss or misjudge. In addition, the problem that the service is completely offline and is adjustable is easily caused.
The schemes of client retry, gray release, abnormal service removal through monitoring and the like just mentioned can all reduce the influence caused by online abnormity, but the methods are measures afterwards and do not meet the requirement of elegant online.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides an online method and an online system based on micro-services, which can realize real elegant online.
The technical scheme of the invention is realized as follows:
according to one aspect of the present invention, there is provided an online method based on a micro service, the micro service being a service call mode, the online method comprising:
before the service is registered in the registration center, executing an initialization process of an application program corresponding to the service;
after the initialization process is completed, setting a state of the service to a suspended state in which the service cannot be registered with the registry;
performing a functional test on a service having a suspended state;
after passing the functional test, setting the state of the service to an enabled state;
a service with an enabled state is sent to a registry;
and registering the service to the registry by using a method calling interface in the service end, wherein the method calling interface is an interface without parameters, and the service registered to the registry is called for the client.
According to an embodiment of the invention, performing a functional test on a service having a suspended state comprises: and executing the test case of the service through the test platform to automatically perform functional test on the service.
According to an embodiment of the invention, the functional test performed on the service with suspended state is a manual test.
According to an embodiment of the invention, an initialization process is initiated by a developer of an application and a method call interface is invoked by the developer to register a service with a registry.
According to another aspect of the present invention, there is provided an online system based on a microservice, the microservice being a service invocation mode, the online system comprising:
a registry for providing a service registered with the registry to a client;
a service administration platform for registering the service into the service administration platform after the initialization process is completed and setting a state of the service to a suspended state, wherein the service cannot be registered to the registry in the suspended state; the system is also used for setting the state of the service to be an enabling state after the service with the suspended state passes the functional test;
the service end of the application program corresponding to the service is provided with a method calling interface used for calling the service, the method calling interface is an interface without parameters, and the service end is used for registering the service to the registration center by using the method calling interface in the service end.
According to an embodiment of the present invention, the online system further comprises: and the test platform is used for executing the test case of the service to automatically perform the function test on the service after receiving the notice of the service administration platform.
According to an embodiment of the invention, the functional test performed on the service with suspended state is a manual test.
According to an embodiment of the invention, an initialization process is initiated by a developer of an application and a method call interface is invoked by the developer to register a service with a registry.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flow chart of an online method based on microservices according to an embodiment of the invention.
FIG. 2 is a block diagram of an online microservice-based system according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Aiming at the problem of online abnormity in the prior art, the most fundamental is to grasp the time for registering the service to the registration center, and the calling party can be ensured not to be abnormal only by registering the service to the registration center under the condition of ensuring that the service is available. Based on the method, the invention provides an online method based on the microservice. FIG. 1 is a flow chart of an online method based on microservices according to an embodiment of the invention. FIG. 2 is a block diagram of an online microservice-based system according to an embodiment of the invention. As shown in connection with fig. 1 and 2, the method of the present invention includes the following steps S140-S148.
In step S140, before the service is registered in the registry 202, an initialization process of an application program corresponding to the service is performed. The application program can not provide service directly when being started, and each application program is started to have an initialization process which can comprise loading configuration, connecting a database and the like. The initialization process may also include other procedures.
The focus of the present invention is to control the point in time when a service is registered with the registry 202, and the service is registered with the registry 202 after the initialization process is completed.
After the initialization process of step S140 is completed, the service is registered in the registry 202 by using a method call interface in the service end, wherein the method call interface is an interface without parameters. Services registered with registry 202 are referred to as services that can be invoked by clients. Since the initialization process is different for each application, the initialization process is usually determined by the application itself. Therefore, a method call interface can be added to the service end of the remote procedure call, the method call interface does not have any parameter and only plays a role of a notification, and after the initialization process is completed, the method call interface is called, and the service end of the remote procedure call registers the service instance in the registry 202.
One of the main improvements of the present invention is that the micro control service can be registered to the time point of the registration center 202 more finely, so as to achieve the purpose of graceful online, i.e. there is no service interruption and no online process of service exception.
In some embodiments, a developer of an application (e.g., a development engineer for a business application) may maintain the initialization process for the application itself. And the method invocation interface may also be invoked by the developer. By registering the service in the registry 202 after the initialization process is completed, most problems can be solved. However, this requires a high level of application developers, who must know the application program well to ensure that the timing for calling the method call interface is correct.
Therefore, in addition to the first guarantee of the method call interface provided by the server, the present invention also provides a second guarantee that a console of the registration center 202, called as a service administration platform 204, is added. When an application calls a registration interface, the service is not registered directly with registry 202, but is registered with service administration platform 204, and adds a state to the service registered in service administration platform 204, which may be one of a suspended state and an enabled state. As shown in fig. 1 and 2, the step of registering the service with the registry 202 may include the following steps S142-S148.
S142, after the initialization process is completed, registering the service in the service administration platform 204, and setting the state of the service to a suspended state, wherein in the suspended state, the service cannot be registered with the registry 202. When an application registers with service administration platform 204, its state defaults to a suspended state. For a service in a suspended state, the service administration platform 204 will not register its information with the registry 202, so the client will not have taken the information of the service provider in the registry 202 for the time being. But at this point the service administration platform 204 is able to access the service provider information, the service administration platform 204 may notify the testing platform 206 or the tester to perform functional tests on the newly published service.
And S144, performing function test on the service with the suspended state.
S146, after the functional test is passed, the service administration platform 204 sets the state of the service to an enabled state.
S148, the service administration platform 204 sends the service with the enabled status to the registry 202. That is, after the functional test is passed, the service state is modified to the enabled state, and at this time, the service administration platform 204 will register the service with the registry 202, and the service can be read and invoked by all the clients normally.
It should be understood that although the service state is maintained by the service administration platform 204, the state may be maintained directly in the registry 202, and if the service state is maintained in the registry 202, the client needs to be modified to read only the service with the enabled state in the registry 202, which may achieve the same effect.
The functional test may be automatic or manual. In embodiments where the functional test is automatic, the functional test performed at step S144 may be performed by: the service administration platform 204 notifies the test platform 206, and the test platform 206 executes the test case of the service to automatically perform the functional test on the service after receiving the notification. If manual testing is performed, the test platform 206 may not be needed, and thus the test platform 206 is not necessary in the present invention.
In summary, the invention adds two times of card point processes in the original micro-service registration process, firstly, a method calling interface is added in the code of the service end, and the interface is controlled to be called by an application developer, thereby ensuring that the initialization of the application is completed when the service is registered. The second time after the service registration, a state (suspend or launch) is added to the service, providing an opportunity to verify service availability before the service is actually exposed to the caller. The invention can be used together with a service administration platform due to the addition of one control operation of the service state. It should be understood that the two stuck point process mentioned in the present invention can also be used separately.
Through the newly added two-time card point process, the invention reduces the integral failure rate of micro-service online, ensures the stable operation of the service, improves the user experience and realizes real elegant online.
One specific example of a process by which a client invokes a service is described below in connection with FIG. 2. As shown in fig. 2, assume that there is a service whose service providers are B and C and whose caller is client application a.
The process of calling the service by the client A comprises the following steps:
first, client a requests registry 202 to obtain a list of service providers.
② the registry 202 returns service B and service C to client A.
And thirdly, the client A calls the service B and the service C.
Assuming that a service D is newly online at this time, the process from the online of the new online service D to the completion of the online is as follows:
fourthly, a service D is started newly.
And fifthly, calling a method calling interface to register the service D to the service administration platform 204 after the initialization of the application program is completed.
Sixthly, the service administration platform 204 internally registers the service D and sets the state to the "suspended" state, and does not register the service D with the registry 202. At this time, the client a cannot acquire the service D when acquiring the service provider list from the registry 202.
Seventh, the service administration platform 204 notifies the testing platform 206: service D initialization is complete.
And eighthly, the test platform 206 starts to execute the automatic test case of the service D and automatically performs the function test on the service D.
Ninthly, the test platform 206 informs the service management platform 204 of completing the function test after the test is passed.
R, service administration platform 204 receives notification from testing platform 206, changes the service status to an "enabled" state, and registers service D with registry 202.
In some embodiments, there may be no testing platform 206 for automatic testing, and in such embodiments, the steps of (c), (b), and (c) may be skipped, and manual functional testing may be performed manually. Likewise, the service status is changed to an "enabled" status on service administration platform 204 manually after the functional test is completed.
At this point, the online process is finished, and the client a can obtain the service D when obtaining the service provider list from the registry 202.
The invention can be combined with the mechanisms of client retry, gray release, abnormal service removal through monitoring and the like to guarantee the reliability of the program to a greater extent.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A method for online based on micro-service is characterized in that,
the micro-service is a service calling mode, and the online method comprises the following steps:
before the service is registered in a registry, executing an initialization process of the application program corresponding to the service;
after the initialization process is completed, setting a state of the service to a suspended state in which the service cannot be registered with the registry;
performing a functional test on the service having the suspended state;
after passing the functional test, setting a state of the service to an enabled state;
sending the service with the enabled status to the registry;
registering the service to the registry by using a method calling interface in the service end, wherein the method calling interface is an interface without parameters, and the service registered to the registry is called for a client.
2. The microservice-based online method according to claim 1, wherein the functional testing of the service having the suspended state comprises:
and executing the test case of the service through a test platform so as to automatically perform the functional test on the service.
3. The microservice-based online method according to claim 1, wherein the functional test performed on the service with the suspended state is a manual test.
4. The microservice-based online method according to claim 1,
the initialization process is initiated by a developer of the application and the method call interface is invoked by the developer to register the service with the registry.
5. An online system based on micro-service, wherein the micro-service is a service calling mode, the online system comprising:
a registry for providing a service registered with the registry to a client;
a service administration platform for registering the service into the service administration platform after an initialization process is completed and setting a state of the service to a suspended state in which the service cannot be registered to the registry; the system is also used for setting the state of the service to be an enabling state after the service with the suspended state passes the functional test;
the service end of the application program corresponding to the service is provided with a method calling interface used for calling the service, the method calling interface is an interface without parameters, and the service end is used for registering the service to the registration center by using the method calling interface in the service end.
6. The microservice-based online system of claim 5, further comprising:
and the test platform is used for executing the test case of the service to automatically perform the function test on the service after receiving the notification of the service administration platform.
7. The microservice-based online system of claim 5, wherein the functional test performed on the service with the suspended state is a manual test.
8. The microservice-based online system of claim 5,
the initialization process is initiated by a developer of the application and the method call interface is invoked by the developer to register the service with the registry.
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