CN112019447B - 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
CN112019447B
CN112019447B CN202010837130.6A CN202010837130A CN112019447B CN 112019447 B CN112019447 B CN 112019447B CN 202010837130 A CN202010837130 A CN 202010837130A CN 112019447 B CN112019447 B CN 112019447B
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file
file block
link node
information
block
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CN112019447A (en
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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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    • 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)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

The embodiment of the disclosure discloses a data flow control method, a 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 to be received in 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; according to the preset uploading time of each file block, control information is respectively sent to the link nodes associated with the file blocks, so that each link node uploads the file block to be received, which is locally cached, 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 the occurrence of network blocking and can play a role in controlling the flow of 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 the internet of things, in particular to a data flow control method, a device, a system, electronic equipment and a storage medium.
Background
At the transport layer of the TCP/IP protocol suite, flow control is typically implemented using sliding windows, which are mainly directed to control of point-to-point traffic, solving end-to-end problems.
In a distributed network topology, once all data senders transmit data to data receivers, network congestion may occur on the bypass switches, such that routers or links in the network are overloaded.
Disclosure of Invention
In view of this, the embodiments of the present disclosure provide a data flow control method, apparatus, system, electronic device, and storage medium, so as to avoid network congestion.
Other features and advantages of embodiments of the present disclosure will be apparent from the following detailed description, or may be learned by practice of embodiments of the disclosure in part.
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, including:
Receiving information of file blocks generated by each link node to obtain a file block information list;
Determining a plurality of file blocks to be received in 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;
according to the preset uploading time of each file block, control information is respectively sent to the link nodes associated with the file blocks, so that each link node uploads the file block to be received, which is locally cached, 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, a throughput of the link node, a file identifier, a file generation time, a transmission completion time required, 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 in 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 to be received in the next scheduling window according to the file generation time, the 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 transmission completion time is required, and the average throughput rate of each link node is minimized.
In one 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;
Forming a file according to the information of each file block for storage includes: 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, and storing the file.
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 with transmission failure, the method further includes receiving an abnormal information list of the file block with abnormal transmission 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 in 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 throughput of each link node includes: determining a plurality of file blocks to be received in the next transmission window and 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 to be received by the abnormal retransmission window and 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 locally cached file block which is abnormally transmitted 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 traffic 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 blocks at a 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 generation time, a transmission completion time, and a file block number.
In an embodiment, after acquiring the file to be uploaded in real time, the sending the information of each file block to the server 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, the 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 uploading time determining unit, configured to determine, according to the file block information list and throughput of each link node, a plurality of file blocks to be received in a next scheduling window and a predetermined uploading 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 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;
And the file forming and storing unit is used for forming and storing the 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, a throughput of the link node, a file identifier, a file generation time, a transmission completion time required, and a file block number.
In an embodiment, the upload time determination unit is configured to: and determining the scheduled uploading time of a plurality of file blocks to be received in the next scheduling window according to the file generation time, the 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 transmission completion time is required, and the average throughput rate of each link node is minimized.
In an embodiment, the device further includes a file information receiving unit, configured to receive, before receiving information of a file block generated by each link node to obtain a file block information list, information of a file to which the file block included in the file block information list belongs;
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, and storing the file.
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 device further includes an anomaly information receiving unit, configured to receive an anomaly information list of an abnormally transmitted file block sent by any link node if the link node has the abnormally transmitted file block;
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 a plurality of file blocks to be received in 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;
The uploading time determining unit is used for determining a plurality of file blocks and scheduled uploading time of each file block which are required to be received by the next transmission window according to the file block information list and throughput of each link node; determining a plurality of abnormally transmitted file blocks to be received by the abnormal retransmission window and 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 locally cached file block with abnormal transmission 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 directly communicating with a server, including:
The file acquisition unit is used for acquiring the 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 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 the server;
a control information receiving unit, configured to receive 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;
and the file block uploading unit is used for uploading the file block at a 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 generation time, a transmission completion time, and a file block number.
In an embodiment, the device further includes a file information uploading unit, configured to send, after acquiring the file to be uploaded in real time, information of each file block to the server, and before 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, the number of file blocks, and a transmission priority.
In a fifth aspect of the present disclosure, a data flow control system is provided, 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 side is used for receiving the information of the file blocks generated by each link node to obtain a file block information list, determining a plurality of file blocks to be received in a next scheduling window and scheduled uploading time of each file block in the plurality of file blocks according to the file block information list and throughput of each link node, and respectively sending control information to the link nodes associated with the plurality of file blocks according to the scheduled uploading time of each file block;
The link node is configured to upload a file block at a predetermined upload time of any file block according to the received control information after receiving the control information sent by the server, where the control information includes the predetermined upload time of each file block in the at least one file block;
And the server side is used for forming a file according to the information of each file block and storing the file after receiving the file block transmitted by each link node.
In a sixth aspect of the present disclosure, an electronic device is provided. The electronic device includes: a processor; and a memory storing executable instructions that, when executed by the processor, cause the electronic device to perform the method of the first aspect or the method of the second aspect.
In a seventh aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method in the first aspect or implements the method in the second aspect.
The technical scheme provided by the embodiment of the disclosure has the beneficial technical effects that:
After receiving information of file blocks generated by each link node to obtain a file block information list, determining a plurality of file blocks to be received in a next scheduling window and scheduled uploading time of each file block in the plurality of file blocks according to the file block information list and throughput of each link node, and accordingly, respectively sending control information to the link nodes associated with the plurality of file blocks to enable each link node to upload the locally cached file blocks to be received at corresponding scheduled 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 blocking can be restrained or prevented, and the flow control function can be realized on the data transmission of an application layer protocol.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following description will briefly explain the drawings required to be used in the description of the embodiments of the present disclosure, and it is apparent that the drawings in the following description are only some of the embodiments of the present disclosure, and other drawings may be obtained according to the contents of the embodiments of the present disclosure and these drawings without inventive effort for those skilled in the art.
Fig. 1 is a flow chart of a data flow control method for a server to execute according to an embodiment of the disclosure;
Fig. 2 is a flowchart of another method for controlling data flow performed by a server according to an embodiment of the present disclosure;
fig. 3 is a schematic view of an application scenario provided according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of an exemplary data storage scheme provided in accordance with an embodiment of the present disclosure;
Fig. 5 is a flow diagram of a data flow control method for link node execution provided in accordance with an embodiment of the present disclosure;
FIG. 6 is a flow diagram of a method of a data flow control system provided in accordance with 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 disclosure;
Fig. 8 is a schematic structural diagram of a data flow 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, the technical solutions adopted and the technical effects achieved by the embodiments of the present disclosure more clear, 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 apparent that the described embodiments are only some embodiments, but not all embodiments of the present disclosure. All other embodiments, which are derived by a person skilled in the art from the embodiments of the present disclosure without creative efforts, fall within the protection scope of the embodiments of the present disclosure.
It should be noted that the terms "system" and "network" in the embodiments of the present disclosure are often used interchangeably herein. References to "and/or" in the embodiments of the present disclosure are intended to encompass any and all combinations of one or more of the associated listed items. The terms first, second and the like in the description and in the claims and drawings are used for distinguishing between different objects and not for limiting a particular order.
It should be further noted that, in the embodiments of the present disclosure, the following embodiments may be implemented separately, or may be implemented in combination with each other, which is not specifically limited by the embodiments of the present disclosure.
The names of messages or information interacted between the various devices in the embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.
The technical solutions of the embodiments of the present disclosure are further described below with reference to the accompanying drawings and through specific implementations.
Fig. 1 is a flow chart illustrating a data flow control method according to an embodiment of the present disclosure, where the embodiment is applicable to a case where a server receives a file of at least one link node of a lower level, and the method may be performed by a data flow control device configured in the server, as shown in fig. 1, where the data flow control method includes:
In step S110, information of a 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 the file generated by a certain link node is too large, if the file is directly uploaded to the server side, the time for the server side to receive and store the file is longer, so that the file of other link nodes may not be timely received and stored, the time for the server side to store a certain file of a certain link node may be caused to exceed the time for the file to be transmitted, and the accuracy and response speed of the application side are affected.
In order to avoid that a certain link node occupies a service end for a long time, the embodiment cuts the file into one or more file blocks with a predetermined size after each link node generates the file. 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 can arrange the 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 should at least include a link node identifier to notify the corresponding link node to be uploaded to the file block after determining the predetermined upload time of the file block, and to consider throughput of the corresponding link node to be uploaded to the file block when determining the predetermined upload time of the file block. It should be noted that, if the link node does not directly transmit the file block to the server, but needs to transmit the file block to the server through one or more intermediate link nodes, where the file block information also needs to carry the identifier of each intermediate link node.
The file block at least comprises a file identifier and a file block number, so that after the server receives all the file blocks of one 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 request fire data must 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 must also include the file generation time and the 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 encryption uploading when the link node uploads the file block to the server.
In step S120, a plurality of file blocks to be received in 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 the information of the file blocks generated by each link node, and determines a plurality of file blocks to be received in a next scheduling window and preset uploading time of each file block in the plurality of file blocks 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 any link node, the principle of first generating and first uploading can be adopted in principle, and for each link node, the throughput capacity of each link node needs to be considered, on the premise of meeting the throughput capacity of each link node and the receiving capacity of the server, the next scheduling window needs to receive which file blocks are determined according to the set rule, and the scheduled uploading time of each file block to be received is determined so as to meet the throughput capacity of each link node and the receiving capacity of the server.
The specific method of this step includes a plurality of methods, for example, a predetermined uploading time of a plurality of file blocks to be received in a next scheduling window can be determined according to the file generation time, the 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 transmission completion time is required, and the average throughput rate of each link node is minimized.
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 determining the scheduled uploading time of each file block to be received in the next scheduling window, sending control information to each link node related to each file block to be received in 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 and stored according to the information of each file block.
After uploading 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 and stores the file.
According to the method, after the server side receives the information of the file blocks generated by each link node to obtain a file block information list, a plurality of file blocks to be received in a next scheduling window and preset uploading time of each file block in the plurality of file blocks are determined according to the file block information list and throughput of each link node, control information is respectively sent to the link nodes associated with the plurality of file blocks according to the control information, so that each link node uploads the locally cached file blocks to be received at the corresponding preset uploading time according to the control information, after the server side receives the file blocks transmitted by each link node, files are formed according to the information of each file block to be stored, network blocking can be restrained or prevented, the server side can receive the file blocks, and the data transmission of an application layer protocol can be controlled.
Fig. 2 is a schematic flow chart of another data flow control method according to an embodiment of the present disclosure, where the embodiment is improved and optimized based on the foregoing embodiment. As shown in fig. 2, the data flow control method according to the present embodiment includes:
in step S210, information of a file to which the file block included in the file block information list belongs is received.
Fig. 3 is a schematic view of an application scenario provided according to this embodiment, as shown in fig. 3, if the application scenario is applied to a distributed system, after each server included in a server side in the distributed system receives information of a file block to be uploaded by each link node in a jurisdiction, a file block information list is generated, and a top-level server needs to determine a plurality of file blocks to be received in a next scheduling window and a scheduled 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, so that uploading time of a file 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 the information of the file block generated by each link node to obtain the file block information list, if a file to be uploaded is generated on any link node, before blocking, the information of the file (that is, the information of the 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, the file name, the MD5 value of the file, the number of file blocks, and the transmission priority.
Based on the file information, after receiving the file blocks transmitted by each link node in step S260, the server may form a file according to the received information of the file to which each file block belongs and the received information of each file block, and store the file.
In step S220, information of the file blocks generated by each link node is received to obtain a file block information list.
In step S230, if any of the link nodes has a file block with transmission failure, the abnormal information list of the file block with abnormal transmission sent by the link node is received.
In order to ensure the reliability of data transmission and avoid incomplete data caused by data loss, after each link node uploads a file block, if a server side timely receives the file block, the server side indicates that the file block is successfully transmitted, if the server side does not receive a certain file block in a preset time, the server side indicates that the file block is failed to be transmitted, and corresponding link nodes need to be arranged for retransmission.
Fig. 4 is a schematic diagram of an exemplary data storage manner according to an embodiment of the present disclosure, as shown in fig. 4, based on the foregoing, a server may maintain a normal transmission completion queue according to file block information of a successful transmission based on whether a file block of a link node is received in time, and maintain an abnormal transmission completion queue according to file block information of a failed transmission.
In step S240, determining a plurality of file blocks and a predetermined uploading time of each file block to be received in 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 to be received by the abnormal retransmission window and scheduled uploading time of each abnormally transmitted file block according to the abnormal information list.
Because the file blocks corresponding to the abnormal transmission completion queue need to be re-uploaded, the scheduling window can be divided into a transmission window and an abnormal retransmission window, so that a plurality of file blocks which need to be received by the next transmission window can be ensured to be transmitted in the scheduling window to meet the preset uploading time.
For example, taking a scheduling window of the server as an example of 10 seconds, if the server determines that the file block to be uploaded within 10 according to the transmission time required to be completed of each file block in the file block information list includes { b1, b2, b3, b4, b5}, that is, the file block to be uploaded in the next transmission window includes { b1, b2, b3, b4, b5}. To reserve transmission time for file blocks that fail to be transmitted, ensuring that these files can all be uploaded within 10 seconds from now on, the scheduling window can be split into a transmission window and an abnormal retransmission window, to control the corresponding link node to transmit file blocks { b1, b2, b3, b4, b5} in the transmission window, and to control the corresponding link node to retransmit the file blocks in which transmission fails in the abnormal retransmission window.
In step S250, 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, and uploads the locally cached file block to be 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.
The embodiment further comprises a processing method of the file block if any link node has transmission failure based on the previous embodiment, so that the reliability of data transmission can be ensured, and incomplete data caused by data loss can be avoided.
Fig. 5 is a flowchart of a data flow control method for a link node according to an embodiment of the present disclosure, where the embodiment is applicable to a case where the link node uploads a file to a server, and the method may be performed by a data flow control device configured in the link node, as shown in fig. 1, where the data flow control method includes:
in step S510, a file to be uploaded is acquired in real time.
For the internet of things system, the internet of things device can periodically or in a use state acquire related information forming files of the device in real time and upload the files to a server, for example, a heating ventilation air conditioner periodically acquires temperature information of a space through a temperature sensor to form temperature information files to be uploaded to the server. For another example, the fire fighting equipment periodically acquires fire fighting information of the equipment to form a fire fighting information file to be uploaded to the server. For another example, the washing machine obtains the status information during use to form a status information file to be uploaded to the server.
In step S520, the file to be uploaded is packaged 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 a server.
After each link node generates a file, the file needs to be uploaded to a server for storage. If the file generated by a certain link node is too large, if the file is directly uploaded to the server side, the time for the server side to receive and store the file is longer, so that the file of other link nodes may not be timely received and stored, the time for the server side to store a certain file of a certain link node may be caused to exceed the time for the file to be transmitted, and the accuracy and response speed of the application side are affected.
In order to avoid that a certain link node occupies a service end for a long time, the embodiment cuts the file into one or more file blocks with a predetermined size after each link node generates the file. 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 can arrange the 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 should at least include a link node identifier to notify the corresponding link node to be uploaded to the file block after determining the predetermined upload time of the file block, and to consider throughput of the corresponding link node to be uploaded to the file block when determining the predetermined upload time of the file block. It should be noted that, if the link node does not directly transmit the file block to the server, but needs to transmit the file block to the server through one or more intermediate link nodes, where the file block information also needs to carry the identifier of each intermediate link node.
The file block at least comprises a file identifier and a file block number, so that after the server receives all the file blocks of one 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 request fire data must 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 must also include the file generation time and the 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 encryption uploading when the link node uploads the file block to the server.
In step S530, control information sent by the server is received, where the control information includes a predetermined upload time of each file block in the at least one file block.
In step S540, the file blocks are uploaded at a predetermined upload time of any file block according to the received control information.
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 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.
In the embodiment, after the file to be uploaded is obtained in real time through the link node, the file to be uploaded is packaged into the file blocks smaller than or equal to the preset size to obtain at least one file block, information of each file block is sent to the server, the control information sent by the server is received, and the file block is uploaded at the preset uploading time of any file block according to the received control information, so that network blocking can be restrained or prevented, the server can receive the file in time, and a flow control effect can be achieved on data transmission of an application layer protocol.
Fig. 6 is a flow chart of a method of a data flow control system according to an embodiment of the present disclosure, where the data flow control system 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 side is used for receiving the information of the file blocks generated by each link node to obtain a file block information list, determining a plurality of file blocks to be received in a next scheduling window and scheduled uploading time of each file block in the plurality of file blocks according to the file block information list and throughput of each link node, and respectively sending control information to the link nodes associated with the plurality of file blocks according to the scheduled 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 the at least one file block. And the server side is used for forming a file according to the information of each file block and storing the file after receiving the file block transmitted by each link node.
As shown in fig. 6, the data flow control method according to the present 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 the information of the file blocks generated by each link node to obtain a file block information list.
In step S640, the server determines, according to the file block information list and the throughput of each link node, a plurality of file blocks to be received in the next scheduling window and a predetermined uploading time of each file block in the plurality of file blocks.
In step S650, the server sends control information to the link nodes associated with the plurality of file blocks according to the predetermined upload 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 of the embodiments shown in fig. 1 to 5, which will not be described in detail in this embodiment. The data flow control system of the embodiment can inhibit or prevent the occurrence of network blocking, so that the server can receive the data, and can control the flow for the data transmission of the application layer protocol.
As an implementation of the method shown in the foregoing 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 the present embodiment, where the embodiment of the device corresponds to the embodiment of the method shown in fig. 1 to 4, and the device may be specifically applied to various electronic apparatuses 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 determining unit 720 is configured to determine a plurality of file blocks to be received in the next scheduling window and a predetermined upload 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.
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 form a file according to information of each file block to store after receiving the file block transmitted by each link node.
In accordance with one or more embodiments of the present disclosure, the information of the file block includes a link node identification, a throughput of the link node, a file identification, a file generation time, a transmission completion time required, a file block number.
According to one or more embodiments of the present disclosure, the upload time determining unit 720 is configured to determine a predetermined upload time of a plurality of file blocks to be received in a next scheduling window according to a file generation time of each file block in the information list, a transmission completion time required, a file block number, and a throughput of each link node, so that each file block completes transmission before the transmission completion time required, and an 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 included in the file block information list 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.
In accordance with one or more embodiments of the present disclosure, the information of the file includes a file name, an MD5 value of the file, the number of file blocks, and a transmission priority.
According to one or more embodiments of the present disclosure, the apparatus further includes an anomaly information receiving unit (not shown in fig. 7) configured to receive an anomaly information list of an abnormally transmitted file block sent by any link node if the link node has the abnormally transmitted file block;
The apparatus further comprises an abnormal retransmission window determining unit (not shown in fig. 7) configured to determine a start time of an abnormal retransmission window within a next scheduling window before determining a plurality of file blocks to be received by the next scheduling window and a predetermined upload time of each of the plurality of file blocks according to the file block information list and throughput of each link node;
The upload time determining unit 720 is configured to determine, according to the file block information list and the throughput of each link node, a plurality of file blocks and predetermined upload time of each file block that need to be received by the next transmission window; determining a plurality of abnormally transmitted file blocks to be received by the abnormal retransmission window and 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 used for enabling each link node to upload the locally cached file block with the abnormal transmission 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 the corresponding functional modules and beneficial effects of the execution method.
As an implementation of the method shown in the foregoing figures, the present application provides an embodiment of a data flow control device, and fig. 8 is a schematic structural diagram of a data flow control device configured in a link node according to the present 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 the present embodiment includes a file acquisition unit 810, a file block encapsulation and information transmission unit 820, a control information reception 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 file blocks 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 upload time of each file block in the at least one file block.
The file block uploading unit 840 is configured to upload any file block at a predetermined uploading 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 identification, a file generation time, a transmission completion time required, 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, send information of each file block to the server, and before 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, the 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 the corresponding functional modules and beneficial effects of the execution method.
Referring now to fig. 9, a schematic diagram of an electronic device 900 suitable for use in implementing embodiments of the present disclosure is shown. The terminal devices in the embodiments of the present disclosure may include, but are not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and the like, and stationary terminals such as digital TVs, desktop computers, and the like. The electronic device shown in fig. 9 is merely an example, and should not impose any limitations on the functionality and scope of use of embodiments of the present disclosure.
As shown in fig. 9, the electronic device 900 may include a processing means (e.g., a central processor, a graphics processor, etc.) 901, which may perform various appropriate actions and processes according to 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 device 900 are also stored. The processing device 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 the bus 904.
In general, the following devices may be connected to the I/O interface 905: input devices 906 including, for example, a touch screen, touchpad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, and the like; 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 means 909 may allow the electronic device 900 to communicate wirelessly or by wire with other devices to exchange data. While fig. 9 shows 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 be implemented or provided instead.
In particular, according to embodiments of the present disclosure, the processes described above with reference to 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 shown in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via the communication device 909, or installed from the storage device 908, or installed from the ROM 902. When executed by the processing device 901, performs the above-described functions defined in the methods of the embodiments of the present disclosure.
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. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any 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, the computer-readable signal medium may comprise a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. 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, fiber optic cables, RF (radio frequency), and the like, or any suitable combination of the foregoing.
The computer readable medium may be contained in the electronic device; or may exist alone without being incorporated 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 to be received in 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; according to the preset uploading time of each file block, control information is respectively sent to the link nodes associated with the file blocks, so that each link node uploads the file block to be received, which is locally cached, 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 the 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 blocks at a 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 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 kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
The flowcharts 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 involved in the embodiments of the present disclosure may be implemented by means of software, or may be implemented by means of hardware. The name of the unit does not in any way constitute a limitation of the unit itself, for example the first acquisition unit may also be described as "unit acquiring at least two internet protocol addresses".
The foregoing description is only of the preferred embodiments of the disclosed embodiments and is presented for purposes of illustration of the principles of the technology being utilized. It will be appreciated by those skilled in the art that the scope of the disclosure in the embodiments of the disclosure is not limited to the specific combination of the above technical features, but also encompasses other technical features formed by any combination of the above technical features or their equivalents without departing from the spirit of the disclosure. Such as the technical solution formed by mutually replacing the above-mentioned features and the technical features with similar functions (but not limited to) disclosed in the embodiments of the present disclosure.

Claims (9)

1. A data flow control method, performed by a server, comprising:
Receiving information of file blocks generated by each link node to obtain a file block information list;
Determining a plurality of file blocks to be received in 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;
according to the preset uploading time of each file block, control information is respectively sent to the link nodes associated with the file blocks, so that each link node uploads the file block to be received, which is locally cached, 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 and storing the file;
If any link node has a file block with transmission failure, the method further comprises receiving an abnormal information list of the file block with abnormal transmission sent by the link node;
The next scheduling window includes a special retransmission window, and determining a plurality of file blocks to be received in 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 throughput of each link node includes: determining a plurality of file blocks to be received in a next transmission window and 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 to be received by the abnormal retransmission window and 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 locally cached file block which is abnormally transmitted at the corresponding preset uploading time according to the received control information.
2. The method of claim 1, wherein the information of the file block includes a link node identification, a throughput of the link node, a file identification, a file generation time, a transmission completion time required, a file block number.
3. The method of claim 2, wherein determining a plurality of file blocks to be received in a next scheduling window and a predetermined upload 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 comprises:
and determining the scheduled uploading time of a plurality of file blocks to be received in the next scheduling window according to the file generation time, the 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 transmission completion time is required, and the average throughput rate of each link node is minimized.
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;
Forming a file according to the information of each file block for storage includes: 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, and storing the file.
5. The method of claim 4, wherein the information of the file includes a file name, an MD5 value of the file, a number of file blocks, and a transmission priority.
6. A data flow control device, configured 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 uploading time determining unit, configured to determine, according to the file block information list and throughput of each link node, a plurality of file blocks to be received in a next scheduling window and a predetermined uploading 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 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 is used for forming a file according to the information of each file block to store after receiving the file block transmitted by each link node;
The apparatus further comprises: the abnormal information receiving unit is used for receiving an abnormal information list of the abnormally transmitted file blocks sent by any link node if any link node has the file blocks with transmission failure; the apparatus further comprises: the abnormal retransmission window determining unit is used for determining the starting time of an abnormal retransmission window in the next scheduling window before determining a plurality of file blocks to be received in 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; an uploading time determining unit, configured to determine a plurality of file blocks and predetermined uploading time of each file block that need to be received in a next transmission window according to the file block information list and throughput of each link node; determining a plurality of abnormally transmitted file blocks to be received by the abnormal retransmission window and 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 locally cached file block with abnormal transmission at the corresponding preset uploading time according to the received control information.
7. A data flow control system, 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 side is used for receiving the information of the file blocks generated by each link node to obtain a file block information list, determining a plurality of file blocks to be received in a next scheduling window and scheduled uploading time of each file block in the plurality of file blocks according to the file block information list and throughput of each link node, and respectively sending control information to the link nodes associated with the plurality of file blocks according to the scheduled uploading time of each file block;
The link node is configured to upload a file block at a predetermined upload time of any file block according to the received control information after receiving the control information sent by the server, where the control information includes the predetermined upload time of each file block in the at least one file block;
the server side is used for forming a file according to the information of each file block to store after receiving the file blocks transmitted by each link node;
The server is used for receiving an abnormal information list of the abnormally transmitted file blocks sent by any link node if the file blocks fail to be transmitted by the link node; the next scheduling window includes a special retransmission window, and determining a plurality of file blocks to be received in 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 throughput of each link node includes: determining a plurality of file blocks to be received in a next transmission window and 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 to be received by the abnormal retransmission window and 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 locally cached file block which is abnormally transmitted at the corresponding preset uploading time according to the received control information.
8. An electronic device, comprising:
A processor; and
A memory for storing executable instructions that, when executed by the one or more processors, cause the electronic device to perform the method of any of claims 1-5.
9. A computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the method according to any of claims 1-5.
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