CN112019447A - Data flow control method, device, system, electronic equipment and storage medium - Google Patents

Data flow control method, device, system, electronic equipment and storage medium Download PDF

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Publication number
CN112019447A
CN112019447A CN202010837130.6A CN202010837130A CN112019447A CN 112019447 A CN112019447 A CN 112019447A CN 202010837130 A CN202010837130 A CN 202010837130A CN 112019447 A CN112019447 A CN 112019447A
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Prior art keywords
file
information
file block
block
link node
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Chinese (zh)
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王治国
杨勇
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Borui Shangge Technology Co ltd
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Borui Shangge Technology Co ltd
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Priority to CN202010837130.6A priority Critical patent/CN112019447A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/26—Flow control; Congestion control using explicit feedback to the source, e.g. choke packets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/62—Establishing a time schedule for servicing the requests

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

The embodiment of the disclosure discloses a data flow control method, a data flow control device, an electronic device and a storage medium, wherein the method comprises the following steps: receiving information of file blocks generated by each link node to obtain a file block information list; determining a plurality of file blocks required to be received by a next scheduling window and preset uploading time of each file block in the plurality of file blocks according to the file block information list and the throughput of each link node; respectively sending control information to link nodes associated with the file blocks according to the preset uploading time of each file block, so that each link node uploads the locally cached file blocks to be received at the corresponding preset uploading time according to the received control information; and after receiving the file blocks transmitted by each link node, forming a file according to the information of each file block and storing the file. The embodiment of the disclosure can inhibit or prevent network congestion from occurring, and can play a role in controlling traffic for data transmission of an application layer protocol.

Description

Data flow control method, device, system, electronic equipment and storage medium
Technical Field
The embodiment of the disclosure relates to the technical field of internet of things, in particular to a data flow control method, device and system, electronic equipment and a storage medium.
Background
At the transport layer of the TCP/IP protocol suite, flow control is usually implemented by using a sliding window, which mainly refers to control of point-to-point traffic, and solves the end-to-end problem.
In a distributed network topology, once all data transmitting ends transmit data to data receiving ends, network congestion may occur on the branch switches, so that routers or links in the network are overloaded.
Disclosure of Invention
In view of this, embodiments of the present disclosure provide a method, an apparatus, a system, an electronic device, and a storage medium for controlling data traffic, so as to avoid network congestion.
Additional features and advantages of the disclosed embodiments will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosed embodiments.
In a first aspect of the present disclosure, an embodiment of the present disclosure provides a data flow control method, which is executed by a server and includes:
receiving information of file blocks generated by each link node to obtain a file block information list;
determining a plurality of file blocks required to be received by a next scheduling window and preset uploading time of each file block in the plurality of file blocks according to the file block information list and the throughput of each link node;
respectively sending control information to link nodes associated with the file blocks according to the preset uploading time of each file block, so that each link node uploads the locally cached file blocks to be received at the corresponding preset uploading time according to the received control information;
and after receiving the file blocks transmitted by each link node, forming a file according to the information of each file block and storing the file.
In an embodiment, the information of the file block includes a link node identifier, throughput of the link node, a file identifier, file generation time, required transmission completion time, and a file block number.
In an embodiment, the determining, according to the file block information list and the throughput of each link node, a plurality of file blocks to be received by a next scheduling window and a predetermined upload time of each file block in the plurality of file blocks includes: and determining the scheduled uploading time of a plurality of file blocks required to be received by the next scheduling window according to the file generation time, the required transmission completion time, the file block number and the throughput of each link node of each file block in the information list, so that each file block is transmitted before the required transmission completion time, and the average throughput rate of each link node is minimum.
In an embodiment, before receiving information of a file block generated by each link node to obtain a file block information list, receiving information of a file to which the file block included in the file block information list belongs;
the file formation and storage according to the information of each file block comprises the following steps: and forming a file according to the received information of the file to which each file block belongs and the information of each file block for storage.
In one embodiment, the information of the file includes a file name, an MD5 value of the file, a number of file blocks, and a transmission priority.
In an embodiment, if any link node has a file block which fails to be transmitted, the method further includes receiving an exception information list of the file block which is transmitted abnormally and sent by the link node;
the next scheduling window includes an internal abnormal retransmission window, and determining a plurality of file blocks to be received by the next scheduling window and the scheduled uploading time of each file block in the plurality of file blocks according to the file block information list and the throughput of each link node includes: determining a plurality of file blocks required to be received by the next transmission window and the preset uploading time of each file block according to the file block information list and the throughput of each link node; determining a plurality of abnormally transmitted file blocks which need to be received by the abnormal retransmission window and the preset uploading time of each abnormally transmitted file block according to the abnormal information list;
and the control information is also used for enabling each link node to upload the file blocks which are abnormally transmitted and are locally cached at the corresponding preset uploading time according to the received control information.
In a second aspect of the present disclosure, an embodiment of the present disclosure further provides a data flow control method, performed by a link node in direct communication with a server, including:
acquiring a file to be uploaded in real time;
packaging the file to be uploaded into file blocks with the size smaller than or equal to a preset size to obtain at least one file block, and sending information of each file block to a server;
receiving control information sent by the server, wherein the control information comprises preset uploading time of each file block in the at least one file block;
and uploading the file block at the preset uploading time of any file block according to the received control information.
In an embodiment, the information of the file block includes a link node identifier, a file identifier, file generation time, required transmission completion time, and a file block number.
In an embodiment, after acquiring the file to be uploaded in real time, before sending the information of each file block to the server, the method further includes sending the information of the file to be uploaded to the server.
In an embodiment, the information of the file to be uploaded includes a file name, an MD5 value of the file, a number of file blocks, and a transmission priority.
In a third aspect of the present disclosure, an embodiment of the present disclosure further provides a data flow control device, configured in a server, including:
the file block information receiving unit is used for receiving the information of the file blocks generated by each link node to obtain a file block information list;
an upload time determining unit, configured to determine, according to the file block information list and throughput of each link node, a plurality of file blocks that need to be received by a next scheduling window and a predetermined upload time of each file block in the plurality of file blocks;
a control information sending unit, configured to send control information to link nodes associated with the multiple file blocks according to the predetermined uploading time of each file block, so that each link node uploads the locally cached file block to be received at the corresponding predetermined uploading time according to the received control information;
and the file forming and storing unit is used for forming and storing a file according to the information of each file block after receiving the file block transmitted by each link node.
In an embodiment, the information of the file block includes a link node identifier, throughput of the link node, a file identifier, file generation time, required transmission completion time, and a file block number.
In one embodiment, the upload time determination unit is configured to: and determining the scheduled uploading time of a plurality of file blocks required to be received by the next scheduling window according to the file generation time, the required transmission completion time, the file block number and the throughput of each link node of each file block in the information list, so that each file block is transmitted before the required transmission completion time, and the average throughput rate of each link node is minimum.
In an embodiment, the apparatus further includes a file information receiving unit, configured to receive information of a file to which a file block included in the file block information list belongs before receiving information of the file block generated by each link node to obtain the file block information list;
the file forming and storing unit is used for: and forming a file according to the received information of the file to which each file block belongs and the information of each file block for storage.
In one embodiment, the information of the file includes a file name, an MD5 value of the file, a number of file blocks, and a transmission priority.
In an embodiment, the apparatus further includes an exception information receiving unit, configured to receive, if any link node has a file block that fails to be transmitted, an exception information list of the file block that is abnormally transmitted and sent by the link node;
the device also comprises an abnormal retransmission window determining unit, which is used for determining the starting time of the abnormal retransmission window in the next scheduling window before determining the multiple file blocks required to be received by the next scheduling window and the preset uploading time of each file block in the multiple file blocks according to the file block information list and the throughput of each link node;
the uploading time determining unit is used for determining a plurality of file blocks required to be received by the next transmission window and the scheduled uploading time of each file block according to the file block information list and the throughput of each link node; determining a plurality of abnormally transmitted file blocks which need to be received by the abnormal retransmission window and the preset uploading time of each abnormally transmitted file block according to the abnormal information list;
the control information sent by the control information sending unit is further used for enabling each link node to upload the file blocks which are cached locally and transmitted abnormally at the corresponding preset uploading time according to the received control information.
In a fourth aspect of the present disclosure, an embodiment of the present disclosure further provides a data flow control apparatus, configured in a link node in direct communication with a server, including:
the file acquisition unit is used for acquiring a file to be uploaded in real time;
the file block packaging and information sending unit is used for packaging the file to be uploaded into file blocks smaller than or equal to a preset size to obtain at least one file block and sending information of each file block to the server;
a control information receiving unit, configured to receive control information sent by the server, where the control information includes a predetermined uploading time of each file block in the at least one file block;
and the file block uploading unit is used for uploading the file block at the preset uploading time of any file block according to the received control information.
In an embodiment, the information of the file block includes a link node identifier, a file identifier, file generation time, required transmission completion time, and a file block number.
In an embodiment, the apparatus further includes a file information uploading unit, configured to send the information of the file to be uploaded to the server after the file to be uploaded is obtained in real time and before the information of each file block is sent to the server.
In an embodiment, the information of the file to be uploaded includes a file name, an MD5 value of the file, a number of file blocks, and a transmission priority.
In a fifth aspect of the present disclosure, a data traffic control system is provided, which includes a server and at least one link node;
the link node is used for acquiring a file to be uploaded in real time, packaging the file to be uploaded into file blocks smaller than or equal to a preset size to obtain at least one file block, and sending information of each file block to the server;
the server is used for receiving information of file blocks generated by each link node to obtain a file block information list, determining a plurality of file blocks required to be received by a next scheduling window and preset uploading time of each file block in the plurality of file blocks according to the file block information list and the throughput of each link node, and respectively sending control information to the link nodes associated with the plurality of file blocks according to the preset uploading time of each file block;
the link node is used for uploading the file block at the preset uploading time of any file block according to the received control information after receiving the control information sent by the server, wherein the control information comprises the preset uploading time of each file block in at least one file block;
and the server is used for receiving the file blocks transmitted by each link node, and then forming a file according to the information of each file block for storage.
In a sixth aspect of the present disclosure, an electronic device is provided. The electronic device includes: a processor; and a memory for storing executable instructions that, when executed by the processor, cause the electronic device to perform the method of the first aspect or to perform the method of the second aspect.
In a seventh aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the method of the first aspect or carries out the method of the second aspect.
The technical scheme provided by the embodiment of the disclosure has the beneficial technical effects that:
after a file block information list is obtained by receiving information of file blocks generated by each link node, determining a plurality of file blocks required to be received by a next scheduling window and preset uploading time of each file block in the plurality of file blocks according to the file block information list and the throughput of each link node, and accordingly respectively sending control information to the link nodes associated with the plurality of file blocks so that each link node uploads the locally cached file blocks required to be received at the corresponding preset uploading time according to the received control information; after receiving the file blocks transmitted by each link node, forming a file according to the information of each file block for storage, so that the occurrence of network congestion can be inhibited or prevented, and the traffic control function can be performed on the data transmission of the application layer protocol.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments of the present disclosure will be briefly described below, and it is obvious that the drawings in the following description are only a part of the embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present disclosure and the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a data flow control method for a server to execute according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of another data flow control method for server execution according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of an application scenario provided in accordance with an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of an exemplary data storage method provided by an embodiment of the present disclosure;
fig. 5 is a schematic flow chart of a data traffic control method executed by a link node according to an embodiment of the present disclosure;
fig. 6 is a schematic flow chart illustrating a method of a data traffic control system according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a data flow control device configured at a server according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a data traffic control device configured at a link node according to an embodiment of the present disclosure;
FIG. 9 shows a schematic structural diagram of an electronic device suitable for use in implementing embodiments of the present disclosure.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments, but not all embodiments, of the embodiments of the present disclosure. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present disclosure, belong to the protection scope of the embodiments of the present disclosure.
It should be noted that the terms "system" and "network" are often used interchangeably in the embodiments of the present disclosure. Reference to "and/or" in embodiments of the present disclosure is meant to include any and all combinations of one or more of the associated listed items. The terms "first", "second", and the like in the description and claims of the present disclosure and in the drawings are used for distinguishing between different objects and not for limiting a particular order.
It should also be noted that, in the embodiments of the present disclosure, each of the following embodiments may be executed alone, or may be executed in combination with each other, and the embodiments of the present disclosure are not limited specifically.
The names of messages or information exchanged between devices in the embodiments of the present disclosure are for illustrative purposes only, and are not intended to limit the scope of the messages or information.
The technical solutions of the embodiments of the present disclosure are further described by the following detailed description in conjunction with the accompanying drawings.
Fig. 1 shows a flowchart of a data traffic control method provided in an embodiment of the present disclosure, where this embodiment is applicable to a case where a server receives a file of at least one subordinate link node, and the method may be executed by a data traffic control device configured in the server, as shown in fig. 1, the data traffic control method according to this embodiment includes:
in step S110, information of the file block generated by each link node is received to obtain a file block information list.
After each link node generates a file, the file needs to be uploaded to a server for storage. If a file generated by a certain link node is too large, if the file is directly uploaded to the server, the time for the server to receive and store the file is long, so that the file of other link nodes may not be received and stored in time, and the time for the server to store a certain file of a certain link node may exceed the time for the file to be transmitted, thereby affecting the accuracy and response speed of the application terminal.
In order to prevent a link node from occupying a server for a long time, in this embodiment, after each link node generates a file, the file is divided into one or more file blocks of a predetermined size. After the segmentation, before the file blocks are directly uploaded to the server, the information of the file blocks is uploaded to the server, so that the server arranges uploading time according to the information of the file blocks to be uploaded.
The information of the file blocks uploaded to the server by the link node may include various information, and it is required to ensure that the server can form a file according to one or more file blocks for storage after receiving each file block. The file block at least comprises a link node identification, so that after the scheduled uploading time of a certain file block is determined, the corresponding link node needing to be uploaded to the file block is informed, and when the scheduled uploading time of the file block is determined, the throughput of the corresponding link node needing to be uploaded to the file block is considered. It should be noted that, if the link node does not directly transmit the file block to the server, the file block needs to be transmitted to the server through one or more intermediate link nodes, and the file block information also needs to carry the identifier of each intermediate link node.
The file block at least also comprises a file identifier and a file block number, so that after the server receives all the file blocks of a file, the file is further obtained according to the file identifier and the file block number.
In addition, if the link node has a requirement on the uploading time of the file to be uploaded, for example, the fire-fighting data is required to be uploaded to the server within one minute to control the early warning response time of the fire hazard, the information of the file block also needs to include the file generation time and the required transmission completion time.
Further, in order to enhance the security during data transmission, the information of the file block uploaded to the server by the link node may further include an MD5 value of the file block and/or an MD5 value of the file, so as to support encrypted uploading during the file block uploading to the server by the link node.
In step S120, a plurality of file blocks to be received by a next scheduling window and a predetermined uploading time of each file block in the plurality of file blocks are determined according to the file block information list and the throughput of each link node.
The server side continuously receives information of the file blocks generated by each link node, and a plurality of file blocks required to be received by a next scheduling window and the preset uploading time of each file block in the file blocks are determined according to the formed file block information list and the throughput of each link node.
If each link node has no requirement on the uploading time of the file to be uploaded, for the file to be uploaded by any link node, in principle, a principle of first generation and uploading can be adopted, for each link node, the throughput capacity of each link node needs to be considered, on the premise that the throughput capacity of each link node is met and the receiving capacity of a server is met, which file blocks need to be received by a next scheduling window are determined according to a set rule, and the scheduled uploading time of each file block to be received is determined, so that the throughput capacity of each link node and the receiving capacity of the server are met.
The specific method of this step includes multiple kinds, for example, the scheduled uploading time of multiple file blocks to be received by the next scheduling window may be determined according to the file generation time, the required transmission completion time, the file block number, and the throughput of each link node in the information list, so as to complete transmission of each file block before the required transmission completion time, and minimize the average throughput rate of each link node.
In step S130, control information is sent to the link nodes associated with the plurality of file blocks according to the predetermined uploading time of each file block, so that each link node uploads the locally cached file block to be received at the corresponding predetermined uploading time according to the received control information.
After the scheduled uploading time of each file block required to be received by the next scheduling window is determined, control information is sent to each link node related to each file block required to be received by the next scheduling window, so that each link node schedules uploading according to the scheduled uploading time of each file block.
In step S140, after receiving the file blocks transmitted by each link node, a file is formed according to the information of each file block and stored.
After each link node uploads the file blocks according to the preset uploading time of each file block, the server side assembles one or more file blocks into a file according to the received information of the file blocks for storage.
After the server receives the information of the file blocks generated by each link node to obtain the file block information list, determining a plurality of file blocks required to be received by a next scheduling window and the scheduled uploading time of each file block in the plurality of file blocks according to the file block information list and the throughput of each link node, and accordingly respectively sending control information to the link nodes associated with the plurality of file blocks, so that each link node uploads the locally cached file blocks to be received at the corresponding preset uploading time according to the received control information, after the server receives the file blocks transmitted by each link node, the file is formed according to the information of each file block for storage, thereby inhibiting or preventing the occurrence of network congestion, the server side can receive the data in time and can control the flow of the data transmission of the application layer protocol.
Fig. 2 is a schematic flow chart of another data traffic control method according to an embodiment of the present disclosure, and this embodiment is based on the foregoing embodiment and is optimized. As shown in fig. 2, the data flow control method according to this embodiment includes:
in step S210, information of a file to which a file block included in the file block information list belongs is received.
Fig. 3 is a schematic view of an application scenario provided in this embodiment, as shown in fig. 3, if the application scenario is applied to a distributed system, after receiving information of file blocks to be uploaded by each link node in a jurisdiction range, each server included in a server in the distributed system generates a file block information list, a top-level server needs to determine a plurality of file blocks to be received by a next scheduling window and a predetermined uploading time of each file block in the plurality of file blocks according to file block information in each file block information list and throughput of each link node, and accordingly, the uploading time of files to be uploaded by each link node is arranged to avoid congestion.
According to one or more embodiments of the present disclosure, before step S210, that is, before receiving information of file blocks generated by each link node to obtain a file block information list, if a file to be uploaded is generated on any link node, before blocking, information of the file (that is, information of a file to which the file block included in the file block information list in step S210 belongs) may also be sent to the server (including, but not limited to, a file name, an MD5 value of the file, the number of file blocks, and a transmission priority).
Based on the file information, when the server receives the file blocks transmitted by each link node in step S260 and then forms a file according to the received information of the file to which each file block belongs and the information of each file block for storage, the server may form a file according to the received information of the file to which each file block belongs and the information of each file block for storage.
In step S220, information of the file block generated by each link node is received to obtain a file block information list.
In step S230, if any link node has a file block that has failed to be transferred, an abnormal information list of the file block that has been abnormally transferred and sent by the link node is received.
In order to ensure the reliability of data transmission and avoid data incompleteness caused by data loss, after each link node uploads a file block, if a server side receives the file block in time, the file block is successfully transmitted, and if the server side does not receive a certain file block in preset time, the file block is unsuccessfully transmitted, and corresponding link nodes are required to be arranged for retransmission.
Fig. 4 is a schematic diagram of an exemplary data storage method provided according to an embodiment of the present disclosure, and as shown in fig. 4, based on the foregoing, the server may maintain a normal transmission completion queue according to file block information of a successful transmission and maintain an abnormal transmission completion queue according to file block information of a failed transmission based on whether a file block of a link node is received in time.
In step S240, determining a plurality of file blocks and a predetermined uploading time of each file block that need to be received by the next transmission window according to the file block information list and the throughput of each link node; and determining a plurality of abnormally transmitted file blocks which need to be received by the abnormal retransmission window and the preset uploading time of each abnormally transmitted file block according to the abnormal information list.
Due to the fact that the file blocks corresponding to the abnormal transmission completion queue need to be uploaded again, the scheduling window can be divided into the transmission window and the abnormal retransmission window, and therefore the fact that the file blocks needing to be received by the next transmission window are transmitted in the scheduling window to meet the preset uploading time is guaranteed.
For example, taking the scheduling window of the server as 10 seconds as an example, if the server determines that the file blocks to be uploaded within 10 include { b1, b2, b3, b4, b5} according to the transmission time required for completing each file block in the file block information list, that is, the file blocks to be uploaded in the next transmission window include { b1, b2, b3, b4, b5 }. In order to reserve transmission time for file blocks with failed transmission and ensure that the files can be uploaded within 10 seconds from now on, the scheduling window can be divided into a transmission window and an abnormal retransmission window, so as to control the corresponding link node to transmit the file blocks { b1, b2, b3, b4, b5} in the transmission window and control the corresponding link node to retransmit the file blocks with failed transmission in the abnormal retransmission window.
In step S250, according to the predetermined uploading time of each file block, control information is respectively sent to the link nodes associated with the plurality of file blocks, so that each link node uploads the locally cached file block to be received at the corresponding predetermined uploading time according to the received control information, and uploads the locally cached file block which is abnormally transmitted at the corresponding predetermined uploading time.
In step S260, after receiving the file blocks transmitted by each link node, a file is formed and stored according to the information of the file to which each received file block belongs and the information of each file block.
On the basis of the previous embodiment, the embodiment further includes a method for processing a file block with a transmission failure in any link node, which can ensure the reliability of data transmission and avoid data incompleteness caused by data loss.
Fig. 5 is a flowchart of a data flow control method executed by a link node according to an embodiment of the present disclosure, where this embodiment is applicable to a case where the link node uploads a file to a server, and the method may be executed by a data flow control device configured in the link node, as shown in fig. 1, the data flow control method according to this embodiment includes:
in step S510, a file to be uploaded is acquired in real time.
For the internet of things system, the internet of things equipment can periodically or in a use state acquire relevant information of the equipment in real time to form a file to be uploaded to the server, for example, a heating ventilation air conditioner periodically acquires temperature information of a space through a temperature sensor to form a temperature information file to be uploaded to the server. And if the fire fighting equipment periodically acquires the fire fighting information of the equipment, forming a fire fighting information file to be uploaded to the server. For another example, the washing machine acquires the state information during the use process to form a state information file to be uploaded to the server.
In step S520, the file to be uploaded is encapsulated into file blocks smaller than or equal to a predetermined size to obtain at least one file block, and information of each file block is sent to the server.
After each link node generates a file, the file needs to be uploaded to a server for storage. If a file generated by a certain link node is too large, if the file is directly uploaded to the server, the time for the server to receive and store the file is long, so that the file of other link nodes may not be received and stored in time, and the time for the server to store a certain file of a certain link node may exceed the time for the file to be transmitted, thereby affecting the accuracy and response speed of the application terminal.
In order to prevent a link node from occupying a server for a long time, in this embodiment, after each link node generates a file, the file is divided into one or more file blocks of a predetermined size. After the segmentation, before the file blocks are directly uploaded to the server, the information of the file blocks is uploaded to the server, so that the server arranges uploading time according to the information of the file blocks to be uploaded.
The information of the file blocks uploaded to the server by the link node may include various information, and it is required to ensure that the server can form a file according to one or more file blocks for storage after receiving each file block. The file block at least comprises a link node identification, so that after the scheduled uploading time of a certain file block is determined, the corresponding link node needing to be uploaded to the file block is informed, and when the scheduled uploading time of the file block is determined, the throughput of the corresponding link node needing to be uploaded to the file block is considered. It should be noted that, if the link node does not directly transmit the file block to the server, the file block needs to be transmitted to the server through one or more intermediate link nodes, and the file block information also needs to carry the identifier of each intermediate link node.
The file block at least also comprises a file identifier and a file block number, so that after the server receives all the file blocks of a file, the file is further obtained according to the file identifier and the file block number.
In addition, if the link node has a requirement on the uploading time of the file to be uploaded, for example, the fire-fighting data is required to be uploaded to the server within one minute to control the early warning response time of the fire hazard, the information of the file block also needs to include the file generation time and the required transmission completion time.
Further, in order to enhance the security during data transmission, the information of the file block uploaded to the server by the link node may further include an MD5 value of the file block and/or an MD5 value of the file, so as to support encrypted uploading during the file block uploading to the server by the link node.
In step S530, control information sent by the server is received, where the control information includes a predetermined uploading time of each file block in the at least one file block.
In step S540, according to the received control information, any file block is uploaded at a predetermined upload time of the file block.
According to one or more embodiments of the present disclosure, after the file to be uploaded is obtained in real time in step S510, before the information of each file block is sent to the server, the information of the file to be uploaded, including but not limited to a file name, an MD5 value of the file, the number of file blocks, and a transmission priority, may also be sent to the server.
In this embodiment, after acquiring a file to be uploaded in real time, a link node encapsulates the file to be uploaded into file blocks with a size smaller than or equal to a predetermined size to obtain at least one file block, sends information of each file block to a server, receives control information sent by the server, and uploads the file block at a predetermined uploading time of any file block according to the received control information, so that occurrence of network congestion can be suppressed or prevented, the server can receive the file block in time, and a traffic control effect can be performed on data transmission of an application layer protocol.
Fig. 6 is a schematic method flow diagram of a data traffic control system according to an embodiment of the present disclosure, where the data traffic control system in this embodiment may include a server and at least one link node.
The link node is used for acquiring a file to be uploaded in real time, packaging the file to be uploaded into file blocks smaller than or equal to a preset size to obtain at least one file block, and sending information of each file block to the server. The server is used for receiving information of file blocks generated by each link node to obtain a file block information list, determining a plurality of file blocks required to be received by a next scheduling window and preset uploading time of each file block in the plurality of file blocks according to the file block information list and the throughput of each link node, and respectively sending control information to the link nodes associated with the plurality of file blocks according to the preset uploading time of each file block. And the link node is used for uploading the file block at the preset uploading time of any file block according to the received control information after receiving the control information sent by the server, wherein the control information comprises the preset uploading time of each file block in at least one file block. And the server is used for receiving the file blocks transmitted by each link node, and then forming a file according to the information of each file block for storage.
As shown in fig. 6, the data flow control method according to this embodiment includes:
in step S610, the link node acquires the file to be uploaded in real time.
In step S620, the link node encapsulates the file to be uploaded into file blocks smaller than or equal to a predetermined size to obtain at least one file block, and sends information of each file block to the server.
In step S630, the server receives information of the file block generated by each link node to obtain a file block information list.
In step S640, the server determines a plurality of file blocks to be received by a next scheduling window and a predetermined uploading time of each file block in the plurality of file blocks according to the file block information list and the throughput of each link node.
In step S650, the server sends control information to the link nodes associated with the file blocks according to the predetermined uploading time of each file block.
In step S660, the link node receives control information sent by the server, where the control information includes a predetermined upload time of each file block in the at least one file block.
In step S670, the link node uploads any file block at a predetermined upload time of the file block according to the received control information.
In step S680, after receiving the file blocks transmitted by each link node, the server forms a file according to the information of each file block and stores the file.
The method of each step in this embodiment may be the method steps in the embodiments shown in fig. 1 to 5, which are not described in detail in this embodiment. The data flow control system described in this embodiment can suppress or prevent the occurrence of network congestion, so that the server can receive the data in time, and can play a role in controlling the flow of data transmission of the application layer protocol.
As an implementation of the methods shown in the above figures, the present application provides an embodiment of a data flow control device, and fig. 7 is a schematic structural diagram of a data flow control device configured at a server according to this embodiment, where the embodiment of the device corresponds to the embodiments of the methods shown in fig. 1 to 4, and the device may be applied to various electronic devices at the server. As shown in fig. 7, the data flow control apparatus according to the present embodiment includes a file block information receiving unit 710, an upload time determining unit 720, a control information transmitting unit 730, and a file forming and storing unit 740.
The file block information receiving unit 710 is configured to receive information of file blocks generated by each link node to obtain a file block information list.
The upload time determination unit 720 is configured to determine a plurality of file blocks to be received by a next scheduling window and a predetermined upload time of each of the file blocks according to the file block information list and the throughput of each link node.
The control information sending unit 730 is configured to send control information to the link nodes associated with the plurality of file blocks according to the predetermined uploading time of each file block, so that each link node uploads the locally cached file block to be received at the corresponding predetermined uploading time according to the received control information.
The file forming and storing unit 740 is configured to, after receiving the file blocks transmitted by each link node, form a file according to information of each file block and store the file.
According to one or more embodiments of the present disclosure, the information of the file block includes a link node identifier, a throughput of the link node, a file identifier, a file generation time, a required transmission completion time, and a file block number.
According to one or more embodiments of the present disclosure, the upload time determination unit 720 is configured to further determine a predetermined upload time of a plurality of file blocks to be received by a next scheduling window according to the file generation time, the required transmission completion time, the file block number, and the throughput of each link node of each file block in the information list, so that each file block completes transmission before the required transmission completion time, and the average throughput rate of each link node is minimized.
According to one or more embodiments of the present disclosure, the apparatus further includes a file information receiving unit (not shown in fig. 7), configured to receive information of a file to which a file block included in a file block information list belongs before receiving information of the file block generated by each link node to obtain the file block information list;
the file forming and storing unit 740 is configured to form a file for storage according to the received information of the file to which each file block belongs and the information of each file block.
According to one or more embodiments of the present disclosure, the information of the file includes a file name, an MD5 value of the file, a number of file blocks, and a transmission priority.
According to one or more embodiments of the present disclosure, the apparatus further includes an exception information receiving unit (not shown in fig. 7), configured to receive, if any link node has a file block that fails to be transmitted, an exception information list of the file block that is abnormally transmitted and sent by the link node;
the device further comprises an abnormal retransmission window determining unit (not shown in fig. 7), configured to determine a starting time of an abnormal retransmission window in a next scheduling window before determining a plurality of file blocks to be received by the next scheduling window and a predetermined uploading time of each file block in the plurality of file blocks according to the file block information list and the throughputs of each link node;
the upload time determination unit 720 is configured to determine a plurality of file blocks and a predetermined upload time of each file block to be received by the next transmission window according to the file block information list and the throughput of each link node; determining a plurality of abnormally transmitted file blocks which need to be received by the abnormal retransmission window and the preset uploading time of each abnormally transmitted file block according to the abnormal information list;
the control information sent by the control information sending unit 730 is further configured to enable each link node to upload the file blocks, which are cached locally and transmitted in an abnormal manner, at the corresponding predetermined upload time according to the received control information.
The data flow control device provided by the embodiment can execute the data flow control method provided by the embodiment of the method disclosed by the invention, and has corresponding functional modules and beneficial effects of the execution method.
As an implementation of the methods shown in the above figures, the present application provides an embodiment of a data traffic control device, and fig. 8 is a schematic structural diagram of a data traffic control device configured at a link node according to this embodiment, where the embodiment of the device corresponds to the embodiment of the method shown in fig. 5, and the device may be specifically applied to various electronic devices in the link node. As shown in fig. 8, the data flow control apparatus according to this embodiment includes a file obtaining unit 810, a file block packaging and information sending unit 820, a control information receiving unit 830, and a file block uploading unit 840.
The file obtaining unit 810 is configured to obtain a file to be uploaded in real time.
The file block packaging and information sending unit 820 is configured to package the file to be uploaded into a file block smaller than or equal to a predetermined size to obtain at least one file block, and send information of each file block to a server.
The control information receiving unit 830 is configured to receive control information sent by the server, where the control information includes a predetermined uploading time of each file block in the at least one file block.
The file block upload unit 840 is configured to upload any file block at a predetermined upload time of the file block according to the received control information.
According to one or more embodiments of the present disclosure, the information of the file block includes a link node identifier, a file generation time, a required transmission completion time, and a file block number.
According to one or more embodiments of the present disclosure, the apparatus further includes a file information uploading unit (not shown in fig. 8), where the file information uploading unit is configured to, after acquiring the file to be uploaded in real time, further include, before sending the information of each file block to the server, sending the information of the file to be uploaded to the server.
According to one or more embodiments of the present disclosure, the information of the file to be uploaded includes a file name, an MD5 value of the file, a number of file blocks, and a transmission priority.
The data flow control device provided by the embodiment can execute the data flow control method provided by the embodiment of the method disclosed by the invention, and has corresponding functional modules and beneficial effects of the execution method.
Referring now to FIG. 9, shown is a schematic diagram of an electronic device 900 suitable for use in implementing embodiments of the present disclosure. The terminal device in the embodiments of the present disclosure may include, but is not limited to, a mobile terminal such as a mobile phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a vehicle terminal (e.g., a car navigation terminal), and the like, and a stationary terminal such as a digital TV, a desktop computer, and the like. The electronic device shown in fig. 9 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.
As shown in fig. 9, the electronic device 900 may include a processing means (e.g., a central processing unit, a graphics processor, etc.) 901 that may perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)902 or a program loaded from a storage means 908 into a Random Access Memory (RAM) 903. In the RAM 903, various programs and data necessary for the operation of the electronic apparatus 900 are also stored. The processing apparatus 901, the ROM 902, and the RAM 903 are connected to each other through a bus 904. An input/output (I/O) interface 905 is also connected to bus 904.
Generally, the following devices may be connected to the I/O interface 905: input devices 906 including, for example, a touch screen, touch pad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; an output device 907 including, for example, a Liquid Crystal Display (LCD), a speaker, a vibrator, and the like; storage 908 including, for example, magnetic tape, hard disk, etc.; and a communication device 909. The communication device 909 may allow the electronic apparatus 900 to perform wireless or wired communication with other apparatuses to exchange data. While fig. 9 illustrates an electronic device 900 having various means, it is to be understood that not all illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided.
In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication device 909, or installed from the storage device 908, or installed from the ROM 902. The computer program performs the above-described functions defined in the methods of the embodiments of the present disclosure when executed by the processing apparatus 901.
It should be noted that the computer readable medium described above in the embodiments of the present disclosure may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the disclosed embodiments, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the disclosed embodiments, a computer readable signal medium may comprise a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.
The computer readable medium may be embodied in the electronic device; or may exist separately without being assembled into the electronic device.
The computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to: receiving information of file blocks generated by each link node to obtain a file block information list; determining a plurality of file blocks required to be received by a next scheduling window and preset uploading time of each file block in the plurality of file blocks according to the file block information list and the throughput of each link node; respectively sending control information to link nodes associated with the file blocks according to the preset uploading time of each file block, so that each link node uploads the locally cached file blocks to be received at the corresponding preset uploading time according to the received control information; and after receiving the file blocks transmitted by each link node, forming a file according to the information of each file block and storing the file.
Or, acquiring a file to be uploaded in real time; packaging the file to be uploaded into file blocks with the size smaller than or equal to a preset size to obtain at least one file block, and sending information of each file block to a server; receiving control information sent by the server, wherein the control information comprises preset uploading time of each file block in the at least one file block; and uploading the file block at the preset uploading time of any file block according to the received control information.
Computer program code for carrying out operations for embodiments of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present disclosure may be implemented by software or hardware. Where the name of a unit does not in some cases constitute a limitation of the unit itself, for example, the first retrieving unit may also be described as a "unit for retrieving at least two internet protocol addresses".
The foregoing description is only a preferred embodiment of the disclosed embodiments and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure in the embodiments of the present disclosure is not limited to the particular combination of the above-described features, but also encompasses other embodiments in which any combination of the above-described features or their equivalents is possible without departing from the scope of the present disclosure. For example, the above features and (but not limited to) the features with similar functions disclosed in the embodiments of the present disclosure are mutually replaced to form the technical solution.

Claims (15)

1. A data flow control method is characterized in that the method is executed by a server side and comprises the following steps:
receiving information of file blocks generated by each link node to obtain a file block information list;
determining a plurality of file blocks required to be received by a next scheduling window and preset uploading time of each file block in the plurality of file blocks according to the file block information list and the throughput of each link node;
respectively sending control information to link nodes associated with the file blocks according to the preset uploading time of each file block, so that each link node uploads the locally cached file blocks to be received at the corresponding preset uploading time according to the received control information;
and after receiving the file blocks transmitted by each link node, forming a file according to the information of each file block and storing the file.
2. The method of claim 1, wherein the information of the file block comprises a link node identifier, a throughput of the link node, a file identifier, a file generation time, a required transmission completion time, and a file block number.
3. The method of claim 2, wherein determining the plurality of file blocks to be received by the next scheduling window and the predetermined upload time of each of the plurality of file blocks according to the file block information list and the throughput of each link node comprises:
and determining the scheduled uploading time of a plurality of file blocks required to be received by the next scheduling window according to the file generation time, the required transmission completion time, the file block number and the throughput of each link node of each file block in the information list, so that each file block is transmitted before the required transmission completion time, and the average throughput rate of each link node is minimum.
4. The method according to claim 1, wherein before receiving information of file blocks generated by each link node to obtain a file block information list, receiving information of a file to which the file blocks included in the file block information list belong;
the file formation and storage according to the information of each file block comprises the following steps: and forming a file according to the received information of the file to which each file block belongs and the information of each file block for storage.
5. The method according to claim 4, wherein the information of the file comprises a file name, an MD5 value of the file, a number of file blocks, and a transmission priority.
6. The method according to claim 1, wherein if any link node has file blocks which fail to be transmitted, the method further comprises receiving an exception information list of the file blocks which are abnormally transmitted and sent by the link node;
the following scheduling window includes an abnormal retransmission window, and determining a plurality of file blocks to be received by the following scheduling window and the scheduled uploading time of each file block in the plurality of file blocks according to the file block information list and the throughput of each link node includes: determining a plurality of file blocks required to be received by the next transmission window and the preset uploading time of each file block according to the file block information list and the throughput of each link node; determining a plurality of abnormally transmitted file blocks which need to be received by the abnormal retransmission window and the preset uploading time of each abnormally transmitted file block according to the abnormal information list;
and the control information is also used for enabling each link node to upload the file blocks which are abnormally transmitted and are locally cached at the corresponding preset uploading time according to the received control information.
7. A data flow control method performed by a link node in direct communication with a server, comprising:
acquiring a file to be uploaded in real time;
packaging the file to be uploaded into file blocks with the size smaller than or equal to a preset size to obtain at least one file block, and sending information of each file block to a server;
receiving control information sent by the server, wherein the control information comprises preset uploading time of each file block in the at least one file block;
and uploading the file block at the preset uploading time of any file block according to the received control information.
8. The method of claim 7, wherein the information of the file block comprises a link node identifier, a file generation time, a required transmission completion time, and a file block number.
9. The method according to claim 7, wherein after acquiring the file to be uploaded in real time, before sending the information of each file block to the server, further comprising sending the information of the file to be uploaded to the server.
10. The method according to claim 9, wherein the information of the file to be uploaded comprises a file name, an MD5 value of the file, a number of file blocks, and a transmission priority.
11. A data flow control apparatus, disposed in a server, comprising:
the file block information receiving unit is used for receiving the information of the file blocks generated by each link node to obtain a file block information list;
an upload time determining unit, configured to determine, according to the file block information list and throughput of each link node, a plurality of file blocks that need to be received by a next scheduling window and a predetermined upload time of each file block in the plurality of file blocks;
a control information sending unit, configured to send control information to link nodes associated with the multiple file blocks according to the predetermined uploading time of each file block, so that each link node uploads the locally cached file block to be received at the corresponding predetermined uploading time according to the received control information;
and the file forming and storing unit is used for forming and storing a file according to the information of each file block after receiving the file block transmitted by each link node.
12. A data flow control apparatus, which is arranged in a link node directly communicating with a server, comprising:
the file acquisition unit is used for acquiring a file to be uploaded in real time;
the file block packaging and information sending unit is used for packaging the file to be uploaded into file blocks smaller than or equal to a preset size to obtain at least one file block and sending information of each file block to the server;
a control information receiving unit, configured to receive control information sent by the server, where the control information includes a predetermined uploading time of each file block in the at least one file block;
and the file block uploading unit is used for uploading the file block at the preset uploading time of any file block according to the received control information.
13. A data flow control system is characterized by comprising a server and at least one link node;
the link node is used for acquiring a file to be uploaded in real time, packaging the file to be uploaded into file blocks smaller than or equal to a preset size to obtain at least one file block, and sending information of each file block to the server;
the server is used for receiving information of file blocks generated by each link node to obtain a file block information list, determining a plurality of file blocks required to be received by a next scheduling window and preset uploading time of each file block in the plurality of file blocks according to the file block information list and the throughput of each link node, and respectively sending control information to the link nodes associated with the plurality of file blocks according to the preset uploading time of each file block;
the link node is used for uploading the file block at the preset uploading time of any file block according to the received control information after receiving the control information sent by the server, wherein the control information comprises the preset uploading time of each file block in at least one file block;
and the server is used for receiving the file blocks transmitted by each link node, and then forming a file according to the information of each file block for storage.
14. An electronic device, comprising:
a processor; and
a memory to store executable instructions that, when executed by the one or more processors, cause the electronic device to perform the method of any of claims 1-10.
15. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 1-10.
CN202010837130.6A 2020-08-19 2020-08-19 Data flow control method, device, system, electronic equipment and storage medium Pending CN112019447A (en)

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