CN112822280A - Decentralized Internet of things micro-service subscription and push method - Google Patents
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Abstract
The invention discloses a decentralized Internet of things micro-service subscription and push method, which comprises the steps of establishing a plurality of IP-open initial index service nodes for providing index services; the method comprises the steps that nodes capable of providing index service are established, registration is carried out on any initial index service node SSi, and the initial index service node forms an index service circle I; a search request is provided for any node Ii in the index service circle through any node Cj needing service, any node Ii provides a mapping relation record index directory to the node Cj needing service according to the own associated algorithm, and the node Cj needing service selects a service node Sk from the node Cj according to the own algorithm, registers the service node Sk and applies for subscription service; any node is adopted as a service node, message pushing can be realized by geometric progression speed increasing, any node can provide large-scale micro-service, and a central node is not needed.
Description
Technical Field
The invention belongs to the Internet, and particularly relates to a decentralized Internet of things micro-service subscription and pushing method.
Background
The Internet of things (IoT), i.e., "Internet of things," is an extension and extension of Internet, and is formed by combining various information sensing devices, so as to implement a network for interconnecting and intercommunicating people, machines, and things at any time and any place. To manage a huge number of internet of things devices, various internet of things real-time protocols, such as XMPP, CoAP, and MQTT, are proposed in the industry. These protocols are based on a "server-client" mechanism, and when the number of devices is large, the concurrent pressure of the server is large, the IP address of the server is fixed, and the server is vulnerable. The existing internet of things is mainly based on IPV4 communication, due to the fact that address resources of IPV4 are scarce, most devices are difficult to obtain public network IP, point-to-point communication of devices in different network segments on the internet needs to pass through a public network server, and concurrency pressure and safety risk of the server are further increased.
Disclosure of Invention
The invention aims to provide a decentralized internet of things microservice subscribing and pushing method to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a decentralized Internet of things micro-service subscription and push method comprises the following steps:
s1, establishing a plurality of IP-open initial index service nodes for providing index service;
s2, establishing a node capable of providing index service, and registering to any initial index service node SSi, wherein the initial index service node forms an index service circle I;
s3, any node Cj needing service proposes a search request to any node Ii in the index service circle, any node Ii provides a mapping relation record index directory to the node Cj needing service according to the own associated algorithm, the node Cj needing service selects a service node Sk from the mapping relation record index directory according to the own algorithm, registers the service node Sk and applies for subscription service;
s4, the service node Sk establishes a registered client IP routing table, then compresses and encrypts the whole routing table or the newly added routing table and forwards the routing table to the node Cj needing service;
s5, the node Cj needing service checks and decrypts the message digest of the received file, if the check is correct, the node Cj needing service obtains the plain text of the node subscription content and provides the plain text to the application layer, and obtains the plain text of the IP set of the child node, the node Cj needing service automatically forwards the routing cipher text and the subscription information cipher text to the child node, and feeds back success information to the father node; if the verification is incorrect, the Cj feeds back failure information to the father node, and the Internet of things microservice subscription and pushing are completed.
Further, all nodes are connected to the internet and communicate based on IPV 6.
Furthermore, the routing table is of a tree structure, and each node of the tree structure is connected with n lower-level branch nodes according to capacity and regional distribution.
Further, the service node Sk takes itself as a center, sends the subscription service to the node of layer 1, and forwards the subscription service to the node of layer 2 by the node of layer 1, and so on to the last node of layer n.
Further, in step s5, a child node which is not connected for several times and exceeds a certain time is called a failed node, and a parent node directly reports a serving node Sk update route, and the serving node provides an nth layer node to replace and update a route table. Or selecting an adjacent node x with strong service capability according to the geographical position, adding the parent connection and the child connection of the failed node to the x, and increasing the out-degree and the in-degree of the x.
Furthermore, all nodes initiate heartbeat packet maintenance connection to own child nodes at regular time.
Further, a network manager is provided with a plurality of monitoring nodes with open IP, the monitoring nodes obtain all micro service node IPs from the initial index service node SSi, are randomly connected with the service nodes, monitor whether abnormal services exist, regularly push abnormal service IP sets to the whole network in turn, request the nodes to reject the abnormal services, inform the index ring to clear the abnormal nodes when the abnormal nodes are found, and the whole network receives the push and the request from the monitoring nodes by default.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to a decentralized Internet of things micro-service subscription and push method, which comprises the steps of establishing a plurality of initial index service nodes which are disclosed by an IP and provide index services; the method comprises the steps that nodes capable of providing index service are established, registration is carried out on any initial index service node SSi, and the initial index service node forms an index service circle I; a search request is provided for any node Ii in the index service circle through any node Cj needing service, any node Ii provides a mapping relation record index directory to the node Cj needing service according to the own associated algorithm, and the node Cj needing service selects a service node Sk from the node Cj according to the own algorithm, registers the service node Sk and applies for subscription service; the nodes are used as service nodes, message pushing can be realized by geometric progression speed increasing, any node can provide large-scale micro-service, and a central node is not needed.
Furthermore, through a service registration and indexing mechanism, the network has self-growing and self-organizing functions, management links are reduced, and high efficiency is achieved.
Furthermore, the system has a monitoring service mechanism, and all the nodes Cj needing service unconditionally receive commands from the monitoring service points, so that the network autonomy is realized, and human management and control are received.
Drawings
Fig. 1 is a diagram illustrating a network topology structure according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a node hardware and software structure in the embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, a decentralized internet of things microservice subscribing and pushing method includes the following steps:
s1, establishing a plurality of IP-disclosed initial index service nodes for providing index service, namely SS1, SS2 and SS3 … SSn, wherein SSi is the ith initial index service node;
and S2, establishing nodes capable of providing index service, and registering to any initial index service node SSi, wherein the initial index service node forms an index service circle I. The ith initial index service node SSi pushes the IP set of the index service circle to the whole network periodically at sparse intervals in turn according to the sequence number of the ith initial index service node SSi, and the whole network node receives the pushing of the SSi by default.
Specifically, any node which is intended to provide service is called a micro service node, the micro service node registers and sends a mapping relation record for establishing a connection to the SSi, such as 'micro service content-IP', the SSi adds the mapping relation record to an index database, periodically pushes a newly added record in an index service circle, and performs data cleaning and cleaning repeated records.
S3, any node Cj needing service proposes a search request to any node Ii in the index service circle, any node Ii provides a mapping relation record (micro service content-IP) index catalog to the node Cj needing service according to the own associated algorithm, and the node Cj needing service selects a service node Sk from the node Cj according to the own algorithm, registers to the service node Sk and applies for subscription service;
s4, the service node Sk establishes a registered client IP routing table, the routing table is in a tree structure, as shown in figure 1, each node in the tree is connected with n lower-level branch nodes according to the capability and the region distribution, and the service node Sk compresses all or newly added routing tables and then encrypts the routing tables into a routing file.
In the tree structure shown in fig. 1, the service node Sk is centered around itself, and sends the subscription service to the node at layer 1, and the subscription service is forwarded from the node at layer 1 to the node at layer 2, and so on to the last leaf node. The nodes communicate using an IPV 6. The vertexes of the graph, that is, the network nodes, may be microservice points, the network nodes may establish any microservice circle, and the intersection of the microservice circles may be zero or non-zero, or may be completely overlapped.
When the service node Sk sends a subscription information ciphertext, the service node Sk sends a routing file ciphertext at the same time, the nodes are transmitted layer by layer, the middleware of the node Cj needing service checks and decrypts the message digest, if the check is correct, the middleware of the node Cj needing service obtains the plaintext of the subscription content of the node and provides the plaintext to an application layer, and obtains a child node IP set plaintext, the middleware of the node Cj needing service automatically forwards the routing ciphertext and the subscription information ciphertext to the child node, and feeds back successful information to a father node; if the check is incorrect, the Cj middleware feeds back failure information to the father node.
The child nodes (time threshold) which are not connected for a plurality of times (namely exceed the set connection time threshold) and exceed a certain time are called failure nodes, a father node directly reports a service node Sk updating route, the service node provides nth-layer nodes, namely leaf nodes to replace and update a routing table, or a near node x with strong service capability is selected according to the geographical position, the father connection and the child connection of the failure nodes are added to the x, and the outgoing degree and the incoming degree of the x are increased.
The nodes providing the social service can form a chat friend circle and push chat information of the friend circle to all the IPs in the circle. The nodes in the circle can establish contact accordingly, and point-to-point communication is carried out.
The node can directly contact the micro-service node to ask for quitting the circle of friends. All nodes initiate heartbeat packet maintenance connection to own child nodes at regular time. The network manager is provided with a plurality of monitoring nodes with open IP, the monitoring nodes obtain all micro service node IPs from the initial index service node SSi, are randomly connected with the service nodes, monitor whether abnormal service exists or not, regularly push abnormal service IP sets to the whole network in turn, request the nodes to reject the abnormal service, inform the index ring to clear the abnormal nodes when finding the abnormal nodes, and accept the push and the request from the monitoring nodes by default in the whole network.
All devices provided with the software middleware can be used as nodes, the middleware enables the nodes to be used as servers to provide services, and meanwhile, the nodes can also be used as clients to be connected with other servers. As shown in fig. 2.
The static degree of any network node x of the invention is x.m, and the dynamic degree is x.n. Degree of static (i.e., degree) refers to a connection over time; the degree of dynamics refers to a temporal connection, which is a sparse connection.
The side length between adjacent network nodes is 1, the static distance from the network node to the micro service point is the sum of the side lengths, the node with the static distance of 1 is called a layer 1 node, and the farthest node is called an n layer node.
The static distance S1 between the i-th network node and the micro service point is i 1.
The dynamic distance between the i-th network node and the micro service point is S2-1.
As shown in fig. 1, if the node on the ith layer applies for the subscription service to the micro service point, taking T as a unit time, the push distance is S1 ═ i, and the push time is T × i; the subscription distance is S2 ═ 1, and the subscription time is the queuing time, which is related to the queue length, and which follows a poisson distribution.
Nodes may unsubscribe, subscribe or unsubscribe infrequently, so that the communication between the node and the service point is sparse, and the average subscription time can be considered T × 1 from a sufficiently long time view.
Take a micro service circle with one hundred million devices as an example: assuming that the degrees of all the nodes are 10, the pushing time is T x 9; assuming that the degrees of each node are 2, the pushing time is T × 27, the concurrent pressure of the microservice node is only 2 connections, and the time pressure is only T × 1 (one unit time). Because the concurrent pressure of the micro service points is small, the pushing time is close to real time, and therefore any node can be used as the micro service point to provide large-scale service without a central node.
Example 1:
the number of the automobile occupied in the whole country is 1000 thousands, and APP software built in the automobile needs to be updated.
1. The car manufacturer, 4S store, and all cars are connected to the internet using the IPV6 communication protocol.
2. The internal equipment of the automobile manufacturer is used as a micro service node, and all automobiles register with the service node when sold.
3. The microservice node establishes a 4S store and registered car routing table. The micro service node sends the update package and the routing package to two groups of 10 adjacent nodes, namely 10 4S stores, 10 4S stores send to 100 4S stores, and 1000 4S stores receive after 3 times of forwarding. A 4S store forwards 10 local cars, and 1 ten thousand cars in the country receive the car;
4. taking the automobile A as an example, after receiving the forwarding packet, the MD5 is verified, the feedback packet is sent to the upper-layer 4S store connected with the MD5, if the feedback packet is not received by the 4S store or the MD5 fails in verification, the MD5 is retransmitted for a plurality of times, and if the MD5 fails in verification, the MD is processed by a fault service point.
5. The software middleware in the automobile A automatically decrypts the routing packet and the updating packet by using the information and the built-in password during registration to obtain the IP and the ports of two lower automobile nodes A1 and A2, respectively forwards the APP updating packet and the routing packet to the nodes, and simultaneously stores the decrypted updating packet in a designated directory of the automobile computer to inform the automobile computer to execute an updating program.
6. The TCP service ports of the lower automobile nodes A1 and A2 are in an open state, and after receiving the forwarding packet of the automobile A, the lower automobile nodes carry out verification and updating work and forward to the next layer.
7. One automobile forwards two automobiles, after 10 times of forwarding, 1024 ten thousand automobiles receive the update package, and the update package is pushed completely.
8. The headquarters node of the automobile company provides password updating service and irregularly updates the decryption password.
Example 2:
1. taking the on-line detection equipment of the assembly line used in a factory as an example, after the equipment is installed, manual field test and manual adjustment are needed, and product parameters are learned and stored.
2. All devices are connected to the internet using the IPV6 communication protocol.
3. And establishing a plurality of devices as index service nodes to form an index service circle.
4. After the equipment installation test of experienced installers in a certain factory is successful, product parameter learning service is registered in the index ring.
5. After a certain plant X operates for a period of time, the equipment detection precision is reduced due to the fact that production line products are replaced or parameters and equipment of plant personnel are improper. Since the plant is in a laggard national area, local maintenance personnel cannot solve it.
6. X searches the index service node for a "product parameter learning" service.
7. The index service node sends a machine directory that can provide product parameter learning services to X.
8. X selects the machine Y1 which best matches with own environment and product according to the characteristics described in the catalog, registers the machine Y1 with Y1 and requires to obtain the learned product parameters.
9. And Y obtains the IPV6 address of X and sends the learned parameters to X through TCP Socket.
10. And updating the parameters by X, ending if the problem is solved, selecting a machine Y2 for learning if the problem is not solved, searching the index service node for the fault service if the problem is not solved all the time, and contacting the index service node with the fault micro service node to report the manual treatment with the nearest distance.
As long as the network nodes are connected in parallel and are more than or equal to 2, the network can realize message pushing by geometric progression acceleration, taking a network with the degree of 2 as an example, the network can reach 1 hundred million and 3000 ten thousand devices by 27 times of forwarding, the concurrent pressure of the micro service point is only 2 concurrent connections, and the time pressure is only T x 1, so that any node can provide large-scale micro service without a central node.
Claims (7)
1. A decentralized Internet of things micro-service subscription and pushing method is characterized by comprising the following steps:
s1, establishing a plurality of IP-open initial index service nodes for providing index service;
s2, establishing a node capable of providing index service, and registering to any initial index service node SSi, wherein the initial index service node forms an index service circle I;
s3, any node Cj needing service proposes a search request to any node Ii in the index service circle, any node Ii provides a mapping relation record index directory to the node Cj needing service according to the own associated algorithm, the node Cj needing service selects a service node Sk from the mapping relation record index directory according to the own algorithm, registers the service node Sk and applies for subscription service;
s4, the service node Sk establishes a registered client IP routing table, then compresses and encrypts the routing table and forwards the routing table to the node Cj needing service;
s5, the node Cj needing service checks and decrypts the message digest of the received file, if the check is correct, the node Cj needing service obtains the plain text of the node subscription content and provides the plain text to the application layer, and obtains the plain text of the IP set of the child node, the node Cj needing service automatically forwards the routing cipher text and the subscription information cipher text to the child node, and feeds back success information to the father node; if the check is incorrect, the node Cj needing service feeds back failure information to the father node, and the Internet of things micro-service subscription and pushing are completed.
2. The decentralized internet of things microservice subscription and push method according to claim 1, wherein all nodes are connected to the internet and communicate based on IPV 6.
3. The decentralized internet of things microservice subscription and pushing method according to claim 1, wherein the routing table is of a tree structure, and each node of the tree structure is connected with n lower branch nodes according to capacity and regional distribution.
4. The decentralized internet of things microservice subscribing and pushing method according to claim 3, wherein the service node Sk is centered around itself, sends a subscription service to the node of layer 1, and forwards the subscription service from the node of layer 1 to the node of layer 2, and so on to the last node of layer n.
5. The decentralized internet of things microservice subscription and pushing method according to claim 1, wherein in step s5, a plurality of child nodes which are not connected and exceed a certain time are called failed nodes, a parent node directly reports an update route of a service node Sk, the service node provides an nth layer node to replace and update a routing table, or selects a near node x with strong service capability according to a geographical location, and adds a parent connection and a child connection of the failed node to x to increase the out-degree and the in-degree of x.
6. The decentralized internet of things microservice subscription and push method according to claim 1, characterized in that all nodes initiate heartbeat packet maintenance connection to their child nodes at regular time.
7. The decentralized internet of things micro-service subscription and pushing method according to claim 1, wherein a network manager is provided with a plurality of monitoring nodes with open IPs, the monitoring nodes obtain all micro-service node IPs from an initial index service node SSi, are randomly connected with service nodes, monitor whether abnormal services exist, periodically push an abnormal service IP set to the whole network in turn, request the nodes to reject the abnormal services, notify an index ring to clear the abnormal nodes, and accept the push and request from the monitoring nodes by default.
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