CN115914418B - Railway interface gateway equipment - Google Patents
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- CN115914418B CN115914418B CN202310218559.0A CN202310218559A CN115914418B CN 115914418 B CN115914418 B CN 115914418B CN 202310218559 A CN202310218559 A CN 202310218559A CN 115914418 B CN115914418 B CN 115914418B
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Abstract
The invention relates to a railway interface gateway device, which comprises an application server, a storage server and a monitoring management terminal which are connected with each other; the application server is used for processing and forwarding the service data; the storage server is used for storing the business data; the monitoring management terminal is used for acquiring and processing the performance parameters of the application server and the storage server; the application server comprises a main application server and a standby application server which are connected; the storage server comprises a main storage server and a standby storage server which are connected. The thread is divided into a plurality of threads through two dimensions of a data frame processing process and a service type; the data forwarding adopts a streaming data processing mode; decoupling the functions of the storage server and the application server, adopting a data batch processing mode for data storage, and adding necessary fields for the data storage; and heartbeat detection is carried out on the main machine and the standby machine, and an alarm is generated according to the identification.
Description
Technical Field
The invention belongs to the technical field of network management equipment, and particularly relates to railway interface gateway equipment.
Background
Currently, the railway bearer network (GSM-R) is an international wireless communication standard for railway communications and applications. Different from the protocol adopted by the railway application system data interface, if the issuing and reporting of the railway service data are realized through the railway bearing network, the data are firstly required to be processed and converted. The railway bearing network adopts an IP address to identify the train service terminal, and the railway application system only knows relevant information such as the train number, the train number and the like when issuing a command, and the corresponding IP of the train number and the train number needs to be found to the terminal communication address management server. In addition, the span of the train running area is large, so that the train can accurately find the interface gateway server corresponding to the current cell no matter where the train is located, and the data interface gateway IP address corresponding to the current cell needs to be acquired from the location attribution server to complete data transmission.
According to the scheme for realizing the interface gateway server at present, the data processing process is to carry out serial forwarding after service data are analyzed, and the coupling between application and storage functions is strong. The redundancy hot standby scheme of the equipment generally adopts local 1+1 redundancy hot standby, namely a main server and a standby server are arranged locally, the main server normally bears the data forwarding function, and when the main server fails, the standby server bears the data forwarding function.
The main disadvantages of the existing solutions are as follows:
1. the existing service data gateway server generally only realizes protocol conversion and data forwarding functions; for the storage of service original data, a port mirror image mode is generally adopted to provide transmission data for a storage and monitoring terminal, but the stored original data is lengthy, which is not beneficial to the investigation of communication faults and the statistics of the success rate of data forwarding.
2. The existing scheme has no unified requirement on the disaster recovery backup method of the equipment; local 1+1 redundant hot standby is generally adopted for an interface gateway server; however, the 1+1 redundancy hot standby mode does not perform directional monitoring on the standby machine without running the application program, and because the standby machine application does not run for a long time, if the faults of the memory and the hard disk occur, switching failure and service interruption can be caused when the host machine fails. Because the disk arrays shared by the interface gateway servers are not deployed differently, the record threat of data forwarding and forwarding is greater when the local servers or disk arrays are destroyed.
3. The existing scheme has no limitation on the delay of application data forwarding, and adopts a method of generating forwarding data after all analysis aiming at each type of service data, thereby influencing the forwarding efficiency; most of data is processed in series, and the processing and forwarding speed is low; processing high concurrency data is poor.
Accordingly, there is a need to provide a new railway interface gateway apparatus that solves the above-mentioned technical problems.
Disclosure of Invention
The object of the present invention is to provide a railway interface gateway device in order to solve the above problems.
The invention realizes the above purpose through the following technical scheme: a railway interface gateway device comprises an application server, a storage server and a monitoring management terminal which are connected with each other; the application server is used for processing and forwarding the service data; the storage server is used for storing the business data; the monitoring management terminal is used for acquiring and processing the performance parameters of the application server and the storage server;
the application server comprises a main application server and a standby application server which are connected; the storage server comprises a main storage server and a standby storage server which are connected.
As a further optimization scheme of the present invention, the application server includes:
the service terminal interaction module is used for receiving service data sent by the train terminal, classifying, processing and forwarding the service data;
the protocol conversion module is used for the processing of size end conversion, escape, CRC check and the like of the service data frame;
the border crossing management module is used for judging whether border crossing exists according to the service data;
the service interface server interaction module is used for receiving service data sent to the train by the railway application system, classifying and processing the service data and forwarding the service data;
the terminal communication address management server interaction module is used for judging the connection state of the terminal communication address management server, sending the locomotive number to the terminal communication address management server when receiving service data sent to the train by the railway application system, and acquiring the IP address of the returned train terminal;
the location attribution server interaction module is used for judging the connection state of the location attribution server, sending inquiry information of the out-of-range application data interface gateway server to the location attribution server and receiving response information;
the storage server interaction module is used for judging the connection state between the application server and the storage server, generating alarm information when the connection is interrupted, and generating alarm recovery information when the interruption is recovered;
the monitoring management terminal interaction module is used for sending the alarm message to the monitoring management terminal and receiving an alarm confirmation message; receiving a configuration update message sent by a monitoring management terminal, generating a configuration update confirmation message and sending the configuration update confirmation message to the monitoring management terminal; receiving a heartbeat inquiry message sent by a monitoring management terminal, generating a heartbeat confirmation message and sending the heartbeat confirmation message to the monitoring management terminal;
and the main/standby heartbeat and switching detection module is used for judging the states of the main application server and the standby application server and generating main/standby switching alarm information and main/standby switching recovery alarm information.
As a further optimization scheme of the invention, the data stream processing is divided into a data receiving thread, a data distributing thread, an activity detection processing thread, a scheduling command service processing thread, a wireless train number service processing thread, a general data processing thread and a data sending thread, wherein the data receiving thread is connected with the data distributing thread, and the activity detection processing thread, the scheduling command service processing thread, the wireless train number service processing thread and the general data processing thread are connected with the data distributing thread and the data sending thread, and data is transferred among the threads through thread cache array variables.
As a further optimization scheme of the invention, when the thread cache array variable data of each thread reaches a preset threshold value, constructing a secondary thread of the current thread, pushing all data of the thread cache array variable to the secondary thread cache array variable, and clearing the data of the current thread cache array variable. The secondary thread calls back to the sending thread after the unprocessed data is processed, and then is recycled by the thread pool. In this way the maximum data processing speed can be increased.
As a further optimization scheme of the invention, a stream data processing mode is adopted to set the buffer memory of the received data frame. After data is forwarded to each service processing thread, firstly comparing whether the data frame is consistent with the data frame buffer memory received last time; if the data is consistent, the data is directly forwarded to each sending thread cache array without carrying out subsequent processing, if the data is inconsistent, the data processing analysis is carried out, and the last received data frame cache is updated.
As a further optimization scheme of the invention, the storage server stores the business data frames based on a database connection pool in a batch synchronization mode. When the variable data of the cache array reaches a certain quantity or the distance from the last receiving time is longer than the waiting time, starting the batch storage.
As a further optimization scheme of the invention, when the application server forwards service data to the storage server, an IP address field, an original address field for data forwarding, a destination address field and a data direction field of locomotive integrated wireless communication equipment are added in the service data.
As a further optimization scheme of the invention, the data forwarding network card IP of the main application server/main storage server is a virtual IP, and when the standby application server/standby storage server detects that the main application server/main storage server fails through heartbeat detection, the data forwarding network card IP of the standby application server/standby storage server is configured as the virtual IP; when the standby application server/standby storage server detects fault recovery through heartbeat detection, configuring a data forwarding network card of the standby application server/standby storage server as an inactive IP;
the monitoring management terminal is configured with a main application server/standby application server/storage server physical IP, sends heartbeat to the main and standby physical IP, judges that the physical states of the main application server/main storage server and the standby application server/standby storage server are normal if the main application server/main storage server and the standby application server/standby storage server both reply the heartbeat, and generates a main and standby application server/storage server physical state alarm if the heartbeat is not replied.
As a further optimization scheme of the invention, the main application server/main storage server and the standby application server/standby storage server are respectively provided with a main and standby identifier and an in-use identifier, if the in-use identifier of the main application server/main storage server or the standby application server/standby storage server is read to be in an out-of-use state, the content of the in-use identifier is changed into in-use, the reading result of the in-use identifier of the corresponding other device is changed into an out-of-use state, and an alarm is reported at the same time; if the main and standby identifiers are read as the host computers, main and standby switching recovery alarms are generated, and if the main and standby identifiers are read as the standby computers, the main and standby switching alarms are generated.
The invention has the beneficial effects that:
1. the invention divides the thread into a plurality of threads through two dimensions of the data frame processing process and the service type, improves the scalability of thread utilization, fully utilizes CPU resources and increases the processing speed of the program;
2. the data forwarding adopts a streaming data processing mode, and data comparison is carried out through a memory, so that the data forwarding speed is improved, and the delay is reduced;
3. according to the invention, the functions of the storage server and the application server are decoupled, the data storage adopts a data batch processing mode, a large amount of data can be processed for storage, and the pressure of a database is reduced. Necessary fields are added in data storage, so that statistics of data in each dimension is facilitated;
4. according to the invention, the heartbeat detection is carried out on the main machine and the standby machine through the monitoring management terminal, so that the situation that the standby machine cannot be started after long-time non-operation is prevented, the main and standby identifications are set for carrying out fault warning, and the fault handling by system operators is greatly facilitated.
Drawings
FIG. 1 is a block diagram of the railway interface gateway apparatus of the present invention;
FIG. 2 is a block diagram of the architecture of an application server of the present invention;
fig. 3 is a thread block diagram of the traffic terminal data stream processing of the present invention.
Detailed Description
The following detailed description of the present application is provided in conjunction with the accompanying drawings, and it is to be understood that the following detailed description is merely illustrative of the application and is not to be construed as limiting the scope of the application, since numerous insubstantial modifications and adaptations of the application will be to those skilled in the art in light of the foregoing disclosure.
FIG. 1 is a block diagram of the overall architecture of the present invention, as shown in FIG. 1, a railway interface gateway device, including an application server, a storage server, and a monitoring management terminal; the application server is responsible for processing and forwarding the service data, and the storage server is responsible for storing the service data. The application servers and the storage servers are deployed by adopting a dual-computer redundancy architecture, the working states of the main and standby computers are required to be detected through heartbeat interaction between the main and standby application servers, the working states of the main and standby computers are required to be detected through heartbeat interaction between the main and standby storage servers, and meanwhile data synchronization is required to be carried out. The monitoring management terminal periodically acquires the performance parameters of the server and monitors the working states of the software and the hardware of the server through heartbeat.
The application server is the core of the application data interface gateway device and bears the main data processing and forwarding tasks. Fig. 2 is a block diagram of an application server according to the present invention, and as shown in fig. 2, the application server is composed of a service terminal interaction module, a protocol conversion module, a border crossing management module, a service interface server interaction module, a terminal communication address management server interaction module, a location home server interaction module, a storage server interaction module, a monitoring management terminal interaction module, and a primary/standby heartbeat and switching detection module.
Service terminal interaction module: the system is used for receiving the service data sent by the train terminal, classifying and processing the data and forwarding the data to other modules.
And a protocol conversion module: the method is used for data processing, comprises CRC (Cyclic Redundancy Check) checking, size end conversion, service data frame generation and transmission.
And the boundary crossing management module is used for: for judging whether or not to cross the boundary based on LAC (location area code location area code) and CI (Cell Identity Cell identification) in the wireless train number information.
Service interface server interaction module: the system is used for receiving service data such as a dispatching command sent to the train by the service system server, classifying and processing the service data, and forwarding the service data to other modules.
Terminal communication address management server interaction module: and the communication state of the terminal communication address management server is judged, and when the service data sent to the train by the railway application system is received, the locomotive number is sent to the terminal communication address management server, and the IP address of the returned train terminal is obtained.
A location attribution server interaction module: and the method is used for judging the connection state of the location home server, sending the query message of the out-of-range application data interface gateway server to the location home server and receiving the response message.
And a storage server interaction module: the method is used for judging and storing the connection state of the server, generating alarm information when the connection is interrupted, and generating alarm recovery information when the interruption is recovered.
Monitoring management terminal interaction module: the system is used for sending alarm information to the monitoring management terminal and receiving alarm confirmation information; receiving a configuration update message sent by a monitoring management terminal and recovering a configuration update confirmation message; and receiving the heartbeat inquiry message sent by the monitoring management terminal and replying the heartbeat confirmation message.
And the main and standby heartbeat and switching detection module is as follows: the method is used for judging the main and standby states of the current server and generating main and standby switching alarm and main and standby switching recovery alarm.
Fig. 3 is a thread block diagram of a service terminal interaction module of the present invention, as shown in fig. 3, in this embodiment, a data forwarding implementation scheme of a railway interface gateway device is as follows: aiming at the problems of low data forwarding efficiency and long waiting time delay of processing after receiving a large amount of data, the method optimizes the program design and adopts a thread pool management technology. The data processing process is divided into a plurality of threads according to two dimensions of the data frame processing process and the service type, and the data forwarding time delay can be greatly shortened by adopting a parallel processing mode. For example, the data processing of the service terminal is divided, that is, the service terminal transmits the data to the service terminal interaction module through the GGSN, and then the data processing is performed, and the data processing is divided into a service terminal data receiving thread, a data distributing thread, an activity detecting and processing thread, a scheduling command service processing thread, a wireless train number service processing thread, a general data processing thread and a data sending thread. The service terminal data receiving thread is connected with the data distributing thread, and the activity detection processing thread, the scheduling command service processing thread, the wireless train number service processing thread and the general data processing thread are connected with the data distributing thread and the data transmitting thread; the data transmission threads comprise a service terminal data transmission thread, a storage server transmission thread, a service system server data transmission thread and a position attribution server data transmission thread, wherein the service terminal data transmission thread is connected with an activity detection thread, the activity detection thread, a scheduling command service processing thread and a wireless train number service processing thread are all connected with the storage server transmission thread, the service system server data transmission thread is connected with a general data processing thread, and the position attribution server data transmission thread is connected with the wireless train number service processing thread; judging whether the wireless train number business processing thread crosses the boundary or not when transmitting data, if so, transmitting the data to a data transmitting thread of a position attribution server; if not, transmitting the data to a storage server sending thread; data is transferred from thread to thread through thread-safe cache array variables.
The method can improve the number of threads of parallel computation to enable the number of threads to reach a certain number, but the data receiving thread and the distributing thread are still single serial threads, so that the scalability of the threads is poor when a large amount of data is received, and CPU resources cannot be fully utilized. Therefore, when the variable of the cache array reaches a certain threshold, namely the thread cannot process data in time, the second-level data processing thread is asynchronously constructed, the cache array variable which cannot be processed in time is pushed to the second-level thread, the variable data of the cache array of the thread is deleted, and the second-level thread is called back to the sending thread after the unprocessed data is processed, and then is recovered by the thread pool. In this way the maximum data processing speed can be increased.
According to the railway service protocol, the service terminal can continuously transmit twice when transmitting the wireless train number. And when the service system server issues the scheduling command, if the service system server fails to receive the acknowledgement, the service system server also repeatedly issues the scheduling command. The service system server and the service terminal activity detection service message are generally fixed messages, and the data are unchanged. In order to further improve the data forwarding efficiency of the interface gateway device, after the data is forwarded to each service processing thread, firstly, whether the data frame is consistent with the last received data frame buffer memory is compared. If the data is consistent, the data is directly forwarded to each sending thread cache array variable without carrying out subsequent processing, if the data is inconsistent, the data processing analysis is carried out, and the last received data frame cache is updated. In this way, the processing analysis speed of repeatedly receiving data can be greatly improved.
In this embodiment, the implementation scheme of the data storage scheme of the railway interface gateway device is as follows: functional decoupling is achieved for the application server and the storage server. The application server is only responsible for necessary data frame field analysis, data forwarding and CRC check, and all analysis and alarming of the data frames are realized in the storage server, and the data storage of the storage server is realized by a database connection pool in a batch storage mode. Only if the received cache array variable reaches a certain number or the distance from the last receiving is longer than the waiting time, batch warehousing is started. Aiming at the defect that the data frames are difficult to count after being written into a database, the application server increases fields such as an IP address, an original address for data forwarding, a destination address, a data direction and the like of a service terminal when constructing data forwarded to a storage server. And realizing bidirectional data dynamic statistics.
In this embodiment, the implementation scheme of the dual-redundancy hot standby of the railway interface gateway device is as follows: the redundant hot standby scheme of the gateway application server and the storage server device is realized through a plurality of physical network cards or a plurality of virtual IP network segments. For example, the server is configured with three physical network cards, one for data synchronization and heartbeat detection between devices, one for management between internal servers, and one for forwarding of service data. The main server generally bears the data forwarding function, the data forwarding network card IP of the main server is configured as a virtual IP, and when the standby server detects the failure of the main server through heartbeat detection, the data forwarding network card IP of the standby server is configured as a virtual IP, and the standby server bears the data forwarding function. When the standby server detects fault recovery through heartbeat detection, the data forwarding network card of the standby server is configured to be an inactive IP, and the main server bears the data forwarding function. And configuring the management IP of the main and standby servers at the monitoring management terminal, sending heartbeats to the main and standby management IP, and when no heartbeat reply is received, indicating the main and standby faults and generating an alarm.
Because the standby equipment is usually in an inactive state and is easy to generate faults, in order to reduce the fault rate, the monitoring management terminal is configured with an application server/storage server physical IP, and sends heartbeats to the main and standby equipment physical IP, if the main and standby equipment can recover the heartbeats, the main and standby equipment physical state is normal, the standby equipment can have a service bearing function, and if the heartbeat is not recovered, the main and standby application server/storage server physical state alarm is generated.
Because the host and the standby cannot clearly determine whether to start or start the main-standby switching after the host and the standby bear the service, main-standby switching false alarms are generated. In order to generate main-standby switching and main-standby switching recovery alarm, a manager can conveniently recover faults, and main-standby identifiers and active identifiers are set. After the application is started, the active and standby identifiers and the active identifier are judged. If the in-use identifier is read to be in an out-of-use state, the identifier is changed into in-use, the other device is changed into out-of-use, and an alarm is reported. If the main and standby identifiers are read as the host computers, main and standby switching recovery alarms are generated, and if the main and standby identifiers are read as the standby computers, the main and standby switching alarms are generated.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (5)
1. The railway interface gateway equipment is characterized by comprising an application server, a storage server and a monitoring management terminal which are connected with each other; the application server is used for processing and forwarding the service data; the storage server is used for storing the business data; the monitoring management terminal is used for acquiring and processing the performance parameters of the application server and the storage server;
the application server comprises a main application server and a standby application server which are connected; the storage server comprises a main storage server and a standby storage server which are connected with each other;
the application server includes:
the service terminal interaction module is used for receiving service data sent by the train terminal, classifying, processing and forwarding the service data;
the service interface server interaction module is used for receiving service data sent to the train by the railway service system, classifying and processing the service data and forwarding the service data;
the protocol conversion module is used for converting the size end of the service data frame, escaping and performing CRC check treatment;
the border crossing management module is used for judging whether border crossing exists according to the service data;
the terminal communication address management server interaction module is used for judging the connection state of the terminal communication address management server, sending the locomotive number to the terminal communication address management server when receiving service data sent to the train by the railway service system, and acquiring the IP address of the returned train terminal;
the location attribution server interaction module is used for judging the connection state of the location attribution server, sending inquiry information of the out-of-range application data interface gateway server to the location attribution server and receiving response information;
the storage server interaction module is used for judging the connection state between the application server and the storage server, generating alarm information when the connection is interrupted, and generating alarm recovery information when the interruption is recovered;
the monitoring management terminal interaction module is used for sending the alarm information to the monitoring management terminal and receiving an alarm confirmation message; receiving a configuration update message sent by a monitoring management terminal, generating a configuration update confirmation message and sending the configuration update confirmation message to the monitoring management terminal; receiving a heartbeat inquiry message sent by a monitoring management terminal, generating a heartbeat confirmation message and sending the heartbeat confirmation message to the monitoring management terminal;
the main/standby heartbeat and switching detection module is used for judging the states of the main application server and the standby application server and generating main/standby switching alarm information and main/standby switching recovery alarm information;
dividing the business data processing into a data receiving thread, a data distributing thread, an activity detection processing thread, a scheduling command business processing thread, a wireless train number business processing thread, a general data processing thread and a data sending thread; the data receiving thread is connected with the data distributing thread, the activity detection processing thread, the scheduling command service processing thread, the wireless train number service processing thread and the general data processing thread are connected with the data distributing thread and the data transmitting thread, and data is transmitted among the threads through a cache array variable;
when the data in the cache array variables of each thread reaches a preset threshold value, asynchronously constructing a secondary thread of the current thread, pushing all the data in the cache array variables to the secondary thread cache array variables, clearing the data of the cache array variables of the current thread, and calling back the secondary thread to a sending thread after the data of the cache array variables are processed, and then recovering the data by a thread pool;
adopting a stream data processing mode, and comparing data through a memory; after data transferred by the cache array variables are forwarded to each service processing thread, firstly comparing whether the data frame is consistent with the last received data frame stored in the memory or not; if the data is consistent, the frame data of the last received data is directly forwarded to the cache array variables of each sending thread without carrying out subsequent processing, and if the data is inconsistent, the data processing analysis is carried out and the cache of the last received data frame is updated.
2. The railway interface gateway device of claim 1, wherein the storage server stores the service data frames in a batch storage manner; when the variable data of the cache array reaches a certain quantity or the distance from the last receiving time is longer than the waiting time, starting the batch storage.
3. A railway interface gateway apparatus according to claim 1, wherein: when the application server forwards service data to the storage server, an IP address field of a service terminal, an original IP address field for data forwarding, a destination IP address field and a data direction field are added in the service data.
4. The railway interface gateway device according to claim 1, wherein the data forwarding network card IP of the main application server/main storage server is a virtual IP, and when the standby application server/standby storage server detects that the main application server/main storage server fails through heartbeat detection, the data forwarding network card IP of the standby application server/standby storage server is configured as the virtual IP; when the standby application server/standby storage server detects fault recovery through heartbeat detection, configuring a data forwarding network card of the standby application server/standby storage server as an inactive IP;
the monitoring management terminal is configured with a main application server/standby application server/storage server physical IP, sends heartbeat to the main and standby physical IP, judges that the physical states of the main application server/main storage server and the standby application server/standby storage server are normal if the main application server/main storage server and the standby application server/standby storage server both reply the heartbeat, and generates a main and standby application server/storage server physical state alarm if the heartbeat is not replied.
5. A railway interface gateway apparatus according to claim 1, wherein: the main application server/main storage server and the standby application server/standby storage server are respectively provided with a main and standby identifier and an active identifier, if the active identifier of the main application server/main storage server or the standby application server/standby storage server is read to be in an inactive state, the content of the active identifier is changed to be in an active state, the reading result of the active identifier of the corresponding other device is changed to be in an inactive state, and an alarm is reported at the same time; if the main and standby identifiers are read as the host computers, main and standby switching recovery alarms are generated, and if the main and standby identifiers are read as the standby computers, the main and standby switching alarms are generated.
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