CN110187985B - Communication method, system and device - Google Patents
Communication method, system and device Download PDFInfo
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- 238000004590 computer program Methods 0.000 claims description 9
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- 238000010586 diagram Methods 0.000 description 3
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- 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
- G06F9/546—Message passing systems or structures, e.g. queues
Abstract
The application discloses a communication method, which comprises the steps that a receiving thread receives a connection message, then establishes connection information according to the connection message and sends the connection information to a processing thread; the processing thread executes corresponding connection processing according to the connection information; when a main thread calls a connection establishment function or a connection disconnection function or a message sending function, the main thread constructs a message type and triggers a sending thread so that the sending thread executes a corresponding asynchronous event according to the message type; wherein the asynchronous event comprises a connection establishment event, a connection disconnection event and a message sending event. The communication method adopts an asynchronous IO mode to establish connection, process messages and send the messages, can effectively release the pressure of the main thread and guarantee the communication performance. The application also discloses a communication system, a communication device and a computer readable storage medium, which also have the technical effects.
Description
Technical Field
The present application relates to the field of computer technology, and in particular, to a communication method; it also relates to a communication system, an apparatus and a computer readable storage medium.
Background
The ISCSI (Internet Small Computer System Interface) mainly uses TCP/IP technology to make the storage device end into a server end capable of providing a disk through an ISCSI target function, namely an ISCSI target function, and further makes the storage device end into a client end capable of mounting the ISCSI target through an ISCSI initiator function, namely an ISCSI initialization user function, so that the disk can be applied through an ISCSI protocol. That is, the ISCSI architecture mainly divides the storage device and the used host into two parts, namely an ISCSI target, i.e. a storage device side, and a device for storing a disk or a RAID. The ISCSI initiator, i.e. the client capable of using the target, is typically a server. The client can establish connection with the target by installing an ISCSI initiator function to access a librbd (block storage interface) of a bottom layer, so as to realize the operation of block storage, multiple block devices can be mapped on one target, multiple targets can be created on one target, and the client can be connected with one or more targets to access respectively.
At present, the communication among distributed tgt clusters adopts a simple message transceiving mode, a thread pool is constructed at a receiving end to process corresponding messages, and the establishment, detection and the like of connection are completed by a main thread, so that the pressure of the main thread is greatly increased, and the abnormity is easy to occur.
Therefore, how to release the main thread pressure and ensure the system reliability is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The application aims to provide a communication method, which can effectively release the pressure of a main thread and ensure the reliability of a system; it is another object of the present application to provide a communication system, an apparatus and a computer-readable storage medium, all of which have the above technical effects.
In order to solve the above technical problem, the present application provides a communication method, including:
after receiving the connection message, the receiving thread constructs connection information according to the connection message and sends the connection information to the processing thread;
the processing thread executes corresponding connection processing according to the connection information;
when a main thread calls a connection establishment function or a connection disconnection function or a message sending function, the main thread constructs a corresponding message type and triggers a sending thread so that the sending thread executes a corresponding asynchronous event according to the message type; wherein the asynchronous event comprises a connection establishment event, a connection disconnection event and a message sending event.
Optionally, the sending, by the receiving thread, the connection information to the processing thread includes:
and the receiving thread sends the connection information to the queue of the processing thread.
Optionally, the sending, by the receiving thread, the connection information to the queue of the processing thread includes:
and the receiving thread sends the connection information to the queue of the processing thread based on a load balancing algorithm.
Optionally, the constructing, by the main thread, a corresponding message type and triggering a sending thread, so that the sending thread executes a corresponding asynchronous event according to the message type, includes:
and the main thread constructs the message type, sends the message type to the queue of the sending thread and sends a reminding message to the sending thread so that the sending thread reads the message type from the queue of the sending thread and executes a corresponding asynchronous event according to the message type.
Optionally, the method further includes:
and when the receiving thread sends the connection information to the queue of the processing thread and the processing thread is reading queue data, forbidding the receiving thread to add the connection information to the queue of the processing thread or stopping the processing thread from reading the queue data.
In order to solve the above technical problem, the present application further provides a communication system, including:
the receiving thread module is used for receiving the connection information, constructing connection information according to the connection information and sending the connection information to the processing thread;
the processing thread module is used for executing corresponding connection processing according to the connection information;
the main thread module is used for constructing a corresponding message type and triggering a sending thread when a connection establishing function or a connection disconnecting function or a message sending function is called;
the sending thread module is used for executing the corresponding asynchronous event according to the message type; wherein the asynchronous event comprises a connection establishment event, a connection disconnection event and a message sending event.
Optionally, the receive thread module is specifically configured to send the connection information to the queue of the processing thread.
Optionally, the main thread module is specifically configured to construct the message type, send the message type to the queue of the sending thread, and send a prompt message to the sending thread, so that the sending thread reads the message type from the queue of the sending thread and executes a corresponding asynchronous event according to the message type.
In order to solve the above technical problem, the present application further provides a communication apparatus, including:
a memory for storing a computer program;
a processor for implementing the steps of the communication method as claimed in any one of the above when executing the computer program.
To solve the above technical problem, the present application further provides a computer-readable storage medium storing a computer program, which when executed by a processor implements the steps of the communication method according to any one of the above.
The communication method comprises the steps that after a receiving thread receives a connection message, connection information is constructed according to the connection message, and the connection information is sent to a processing thread; the processing thread executes corresponding connection processing according to the connection information; when a main thread calls a connection establishment function or a connection disconnection function or a message sending function, the main thread constructs a corresponding message type and triggers a sending thread so that the sending thread executes a corresponding asynchronous event according to the message type; wherein the asynchronous event comprises a connection establishment event, a connection disconnection event and a message sending event.
Compared with the traditional communication method, the communication method provided by the application has the advantages that the receiving thread can construct corresponding connection information after receiving the connection message and send the connection information to the processing thread for corresponding processing; and after receiving the message type sent by the main thread, the sending thread can execute the corresponding asynchronous event according to the message type so as to realize the corresponding function. According to the communication method provided by the application, the connection establishment and disconnection and the message sending are completed by the receiving thread and the sending thread, and are not borne by the main thread any more, so that the pressure of the main thread is effectively released, and the communication performance is guaranteed.
The communication system, the device and the computer readable storage medium provided by the application have the technical effects.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the prior art and the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a flowchart illustrating a communication method according to an embodiment of the present application;
fig. 2 is a schematic diagram of a communication system according to an embodiment of the present application;
fig. 3 is a schematic diagram of a communication device according to an embodiment of the present disclosure.
Detailed Description
The core of the application is to provide a communication method, which can effectively release the pressure of the main thread and ensure the reliability of the system; it is another object of the present application to provide a communication system, an apparatus and a computer-readable storage medium, all of which have the above technical effects.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. 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 application.
At present, the communication of each node in the tgt cluster adopts a simple message transceiving mode, a thread pool is constructed at a receiving end to process corresponding messages, and the establishment, detection and the like of connection are completed by a main thread, so that the pressure of the main thread is greatly increased, and the abnormality is easily caused. Therefore, the communication method is provided to release the pressure of the main thread and guarantee the communication performance.
Referring to fig. 1, fig. 1 is a schematic flowchart of a communication method according to an embodiment of the present disclosure; referring to fig. 1, the communication method includes:
s101: the receiving thread receives the connection message, constructs connection information according to the connection message and sends the connection information to the processing thread;
s102: the processing thread performs corresponding connection processing according to the connection information;
specifically, on the basis of a distributed tgt cluster communication system which is built based on libervent components and deployed on a Linux platform, in order to release main thread pressure, connection establishment and message sending in the communication method provided by the application are not executed by a main thread any more, but are completed by a receiving thread, a sending thread and a processing thread in an asynchronous IO mode. Specifically, after receiving a connection message sent by another node, the receiving thread of the current node is temporarily connected, and the receiving thread of the current node constructs connection information according to the connection message and further sends the connection information to a processing thread in the thread pool, so that the processing thread performs corresponding connection processing according to the connection information.
In order to reduce the probability of data maintenance errors, in a specific embodiment, the sending, by the receiving thread, the connection information to the processing thread includes: the receiving thread sends the connection information to a queue of processing threads.
Specifically, in this embodiment, each processing thread in the processing thread pool is provided with a corresponding queue, so that the data of the processing thread is maintained through the queue, and a data maintenance error is avoided. Specifically, when a new connection is made, the receiving thread constructs connection information and further sends the connection information to a queue of a certain processing thread in the thread pool, and the processing thread is reminded to process data in the queue of the receiving thread through a pipeline so as to perform corresponding connection processing.
Further, to achieve load balancing and better guarantee communication performance, in a specific embodiment, the receiving thread sending the connection information to the queue of the processing thread includes the receiving thread sending the connection information to the queue of the processing thread based on a load balancing algorithm.
Specifically, in this embodiment, after the receiving thread constructs the connection information, the connection information is added to a queue of a certain processing thread in the thread pool based on a load balancing algorithm, and the processing thread is notified through a pipeline to process data in the queue, so that the connection processing is realized and the load balancing can be effectively realized.
S103: when the main thread calls a connection establishment function or a connection disconnection function or a message sending function, the main thread constructs a corresponding message type and triggers a sending thread so that the sending thread executes a corresponding asynchronous event according to the message type; the asynchronous events comprise connection establishment events, connection disconnection events and message sending events.
Specifically, on the basis of ensuring the stability of the existing communication system, an asynchronous event callback mechanism is additionally arranged in an asynchronous IO mode, an asynchronous event, namely a connection establishment event, a connection disconnection event and a message sending event, is respectively designed for connection establishment, connection disconnection and message sending, and when a main thread needs to call a connection establishment function, a connection disconnection function or a message sending function, the main thread establishes a corresponding message type and triggers a sending thread, so that the sending thread executes a corresponding asynchronous event in a corresponding callback according to the message type, releases the pressure of the main thread and ensures the communication performance.
In a specific embodiment, the main thread constructs a corresponding message type and triggers the sending thread, so that the sending thread executes a corresponding asynchronous event according to the message type, including the main thread constructing the message type, sending the message type to a queue of the sending thread, and sending a reminding message to the sending thread, so that the sending thread reads the message type from the queue of the sending thread and executes the corresponding asynchronous event according to the message type.
Specifically, in this embodiment, three data queues are designed for the sending thread, which are a connection establishment data queue, a connection disconnection data queue, and a message sending data queue, respectively, and after the main thread establishes the message type, the main thread further adds the message type to the corresponding data queue, for example, when the main thread needs to invoke a message sending function, the main thread adds the established message type to the message sending data queue. Further, after the main thread adds the message type to the corresponding data queue, the main thread sends a reminding message to the sending thread through a pipeline, so that the sending thread reads data from the corresponding queue to perform corresponding operation, for example, reads data from the message sending queue, and then executes a message sending event through callback.
Further, on the basis of the foregoing embodiments, optionally, the communication method further includes, when the receiving thread sends connection information to the queue of the processing thread, and the processing thread is reading queue data, prohibiting the receiving thread from adding connection information to the queue of the processing thread or stopping the processing thread from reading queue data.
Specifically, in order to further ensure the data synchronization, the embodiment performs data synchronization maintenance in a locking manner. Specifically, the receiving thread may prohibit the receiving thread from adding connection information to the queue of a certain processing thread when the processing thread is reading data from the queue, and may allow the receiving thread to add connection information to the queue of the processing thread after the processing thread completes the data reading. Or, when the receiving thread adds the connection information to the queue of a certain processing thread, if the processing thread is reading data from the queue, the processing thread may be prohibited from reading data from the queue, and after the receiving thread completes the addition of the connection information, the processing thread is permitted to read data from the queue, and performs corresponding processing.
It can be understood that, when the receiving thread adding connection information conflicts with the processing thread reading queue data, the receiving thread adding connection information or the processing thread reading queue data is preferentially set according to actual needs, and the present application is not limited to only one.
In summary, in the communication method provided by the present application, after receiving the connection message, the receiving thread may construct corresponding connection information and send the connection information to the processing thread for corresponding processing; and after receiving the message type sent by the main thread, the sending thread can execute the corresponding asynchronous event according to the message type so as to realize the corresponding function. According to the communication method provided by the application, the connection establishment and disconnection and the message sending are completed by the receiving thread and the sending thread, and are not borne by the main thread any more, so that the pressure of the main thread is effectively released, and the communication performance is guaranteed.
The present application also provides a communication system, which is described below and to which the above-described method may be mutually referenced. Referring to fig. 2, fig. 2 is a schematic diagram of a communication system according to an embodiment of the present application, and with reference to fig. 2, the communication system includes: a main thread module (e.g., the main thread shown in fig. 2), a receive thread module (e.g., the receive thread shown in fig. 2), a send thread module (e.g., the send thread shown in fig. 2), and a process thread module (e.g., the process threads 1, 2 … n shown in fig. 2);
the receiving thread module is used for receiving the connection information, constructing connection information according to the connection information and sending the connection information to the processing thread; the processing thread module is used for executing corresponding connection processing according to the connection information; the main thread module is used for constructing a corresponding message type and triggering a sending thread when a connection establishing function or a connection disconnecting function or a message sending function is called; the sending thread module is used for executing corresponding asynchronous events according to the message types; the asynchronous events comprise connection establishment events, connection disconnection events and message sending events.
On the basis of the foregoing embodiment, optionally, the receive thread module is specifically configured to send the connection information to a queue of the processing thread.
On the basis of the foregoing embodiment, optionally, the receive thread module is specifically configured to send the connection information to the queue of the processing thread based on a load balancing algorithm.
On the basis of the foregoing embodiment, optionally, the main thread module is specifically configured to construct a message type, send the message type to the queue of the sending thread, and send a prompt message to the sending thread, so that the sending thread reads the message type from the queue of the sending thread and executes a corresponding asynchronous event according to the message type.
On the basis of the above embodiment, optionally, the method further includes:
and the forbidding processing module is used for forbidding the receiving thread to add the connection information to the queue of the processing thread or stopping the processing thread from reading the queue data when the receiving thread sends the connection information to the queue of the processing thread and the processing thread is reading the queue data.
The present application also provides a communication apparatus, as shown with reference to fig. 3, including: a memory 10 and a processor 20; wherein the memory 10 is used for storing a computer program; the processor 20, when executing the computer program, performs the following steps:
the receiving thread receives the connection message, constructs connection information according to the connection message and sends the connection information to the processing thread; the processing thread executes corresponding connection processing according to the connection information; when the main thread calls a connection establishment function or a connection disconnection function or a message sending function, the main thread constructs a corresponding message type and triggers a sending thread so that the sending thread executes a corresponding asynchronous event according to the message type; the asynchronous events comprise connection establishment events, connection disconnection events and message sending events.
The present application further provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:
the receiving thread receives the connection message, constructs connection information according to the connection message and sends the connection information to the processing thread; the processing thread executes corresponding connection processing according to the connection information; when the main thread calls a connection establishment function or a connection disconnection function or a message sending function, the main thread constructs a corresponding message type and triggers a sending thread so that the sending thread executes a corresponding asynchronous event according to the message type; the asynchronous events comprise connection establishment events, connection disconnection events and message sending events.
The computer-readable storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
For the introduction of the computer-readable storage medium provided by the present invention, please refer to the above method embodiments, which are not described herein again.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device, the apparatus and the computer-readable storage medium disclosed by the embodiments correspond to the method disclosed by the embodiments, so that the description is simple, and the relevant points can be referred to the description of the method.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The communication method, system, apparatus, and computer-readable storage medium provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (10)
1. A communication method applied to a distributed tgt cluster is characterized by comprising the following steps:
after receiving the connection message, the receiving thread constructs connection information according to the connection message and sends the connection information to the processing thread;
the processing thread executes corresponding connection processing according to the connection information;
when a main thread calls a connection establishment function or a connection disconnection function or a message sending function, the main thread constructs a corresponding message type and triggers a sending thread so that the sending thread executes a corresponding asynchronous event according to the message type; wherein the asynchronous event comprises a connection establishment event, a connection disconnection event and a message sending event.
2. The communication method according to claim 1, wherein the receiving thread sending the connection information to a processing thread comprises:
and the receiving thread sends the connection information to the queue of the processing thread.
3. The communication method according to claim 2, wherein the receiving thread sending the connection information to the queue of processing threads comprises:
and the receiving thread sends the connection information to the queue of the processing thread based on a load balancing algorithm.
4. The communication method according to claim 3, wherein the main thread constructs a corresponding message type and triggers a sending thread, so that the sending thread executes a corresponding asynchronous event according to the message type, and the method comprises the following steps:
and the main thread constructs the message type, sends the message type to the queue of the sending thread and sends a reminding message to the sending thread so that the sending thread reads the message type from the queue of the sending thread and executes a corresponding asynchronous event according to the message type.
5. The communication method according to claim 4, further comprising:
and when the receiving thread sends the connection information to the queue of the processing thread and the processing thread is reading queue data, forbidding the receiving thread to add the connection information to the queue of the processing thread or stopping the processing thread from reading the queue data.
6. A communication system for use in a distributed tgt cluster, comprising:
the receiving thread module is used for receiving the connection information, constructing connection information according to the connection information and sending the connection information to the processing thread;
the processing thread module is used for executing corresponding connection processing according to the connection information;
the main thread module is used for constructing a corresponding message type and triggering a sending thread when a connection establishing function or a connection disconnecting function or a message sending function is called;
the sending thread module is used for executing the corresponding asynchronous event according to the message type; wherein the asynchronous event comprises a connection establishment event, a connection disconnection event and a message sending event.
7. The communication system according to claim 6, wherein the receive thread module is specifically configured to send the connection information to the queue of processing threads.
8. The communication system according to claim 7, wherein the main thread module is specifically configured to construct the message type, send the message type to the queue of the sending thread, and send a notification message to the sending thread, so that the sending thread reads the message type from the queue of the sending thread and executes a corresponding asynchronous event according to the message type.
9. A communications apparatus, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the communication method according to any one of claims 1 to 5 when executing the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed by a processor, implements the steps of the communication method according to any one of claims 1 to 5.
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| CN112835838A (en) * | 2019-11-25 | 2021-05-25 | 广东博智林机器人有限公司 | Serial port communication method, device, storage medium and computer equipment |
| CN111737030A (en) * | 2020-06-24 | 2020-10-02 | 广东浪潮大数据研究有限公司 | Control instruction processing method, device and equipment and computer storage medium |
| CN112019452B (en) * | 2020-08-21 | 2022-06-17 | 苏州浪潮智能科技有限公司 | Method, system and related device for processing service requirement |
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