CN110620829B - Method, device and equipment for distributing multicast service identification number and storage medium - Google Patents
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Abstract
The embodiment of the invention discloses a method, a device and equipment for distributing multicast service identification numbers and a computer readable storage medium, wherein the method comprises the following steps: receiving a request for applying a multicast service identification number; receiving a request for applying a multicast service identification number; under the condition that the multicast service does not apply for the multicast service identification number, the multicast service does not apply for the multicast service identification number for the first time, and the configured multicast service identification numbers are not completely distributed, starting to distribute after the multicast service identification number distributed at the last time; and under the conditions that the multicast service does not apply for the multicast service identification number, the multicast service does not apply for the multicast service identification number for the first time, and the configured multicast service identification numbers are all distributed, starting distribution from a preset deletion queue. The embodiment of the invention can rapidly distribute the multicast ID under the condition that a large amount of multicast services exist, the time complexity is promoted to log2(N) from the original O (N), and the space complexity is changed from the original O (1) to O (N), thereby saving the storable space.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, a device, and a computer-readable storage medium for allocating multicast service identification numbers.
Background
A multicast service is a forwarding service transmitted by a single data source and received by multiple receiving sources. The multicast service is a point-to-multipoint service, so that the data transmission efficiency is higher, and the purposes of saving network bandwidth and reducing network load are achieved. The multicast service can realize live video, network telephone, video conference and the like.
For multicast services, each service requires a unique identification number (ID) that identifies the service. The existing multicast service ID distribution mode has the problems that the efficiency of searching the applied multicast service ID is low, and the time complexity is O (N); the storage space in the maximum range needs to be reserved, the space complexity is O (1), and the storage space is greatly wasted.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a method and an apparatus for allocating a multicast service identification number, and an apparatus and a computer readable storage medium for allocating a multicast service identification number, so as to solve the problems that in the existing multicast service ID allocation, the efficiency of searching for an already applied multicast service ID is very low, and the time complexity is o (n); the storage space in the maximum range needs to be reserved, the space complexity is O (1), and the storage space is greatly wasted.
The technical scheme adopted by the embodiment of the invention for solving the technical problems is as follows:
according to an aspect of the embodiments of the present invention, a method for allocating multicast service identification numbers is provided, where the method includes:
receiving a request for applying the multicast service identification number;
under the condition that the multicast service does not apply for the multicast service identification number, the multicast service does not apply for the multicast service identification number for the first time, and the configured multicast service identification numbers are not completely distributed, starting to distribute the multicast service identification numbers from the last distributed multicast service identification number;
and under the condition that the multicast service does not apply for the multicast service identification number, the multicast service does not apply for the multicast service identification number for the first time, and the configured multicast service identification numbers are all distributed, starting distribution from a preset deletion queue.
According to another aspect of the embodiments of the present invention, an apparatus for allocating a sequence multicast service identification number is provided, where the apparatus includes a receiving module, a first allocating module, and a second allocating module;
the receiving module is used for receiving a request for applying the multicast service identification number;
the first allocation module is configured to start allocation after the last allocated multicast service identification number when the multicast service does not apply for a multicast service identification number, the multicast service is not a first application multicast service identification number, and the allocated multicast service identification numbers are not all allocated;
and the second distribution module is used for starting distribution from a preset deletion queue under the condition that the multicast service does not apply for the multicast service identification number, the multicast service is not the first time for applying for the multicast service identification number, and the configured multicast service identification numbers are all distributed completely.
According to another aspect of the embodiments of the present invention, an apparatus for allocating multicast service identification numbers is provided, where the apparatus includes: the distribution program of the multicast service identification number is executed by the processor to realize the steps of the distribution method of the multicast service identification number.
According to another aspect of the embodiments of the present invention, a computer-readable storage medium is provided, where a multicast service identification number allocation program is stored on the computer-readable storage medium, and when executed by a processor, the multicast service identification number allocation program implements the steps of the foregoing multicast service identification number allocation method.
The method, the device and the equipment for distributing the multicast service identification number and the computer readable storage medium of the embodiment of the invention judge and process the applied multicast service identification number, the first applied multicast service identification number and the complete distribution; the multicast ID can be rapidly distributed under the condition that a large number of multicast services exist, the time complexity is promoted to log2(N) from the original O (N), and the space complexity is changed to O (N) from the original O (1), so that the storable space is saved.
Drawings
Fig. 1 is a schematic flow chart of a method for allocating multicast service identification numbers according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an apparatus for allocating multicast service identification numbers according to a second embodiment of the present invention;
fig. 3 is another schematic structural diagram of an apparatus for allocating multicast service identification numbers according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of an apparatus for allocating a multicast service identifier according to a third embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
First embodiment
As shown in fig. 1, a first embodiment of the present invention provides a method for allocating multicast service identification numbers, where the method includes:
step S11: and receiving a request for applying the multicast service identification number.
In this embodiment, the request for applying the multicast service identification number includes a multicast service keyword.
Step S12: and under the condition that the multicast service does not apply for the multicast service identification number, the multicast service does not apply for the multicast service identification number for the first time, and the configured multicast service identification numbers are not completely distributed, starting to distribute the multicast service identification numbers from the last distributed multicast service identification number.
In this embodiment, whether the multicast service applies for the multicast service identification number for the first time may be determined by a preset flag bit. For example: if the value of the flag bit is True, determining that the multicast service is a first application multicast service identification number; if the value of the flag bit is False, it is determined that the multicast service is not the first application multicast service identification number.
Conceivably, if the multicast service applies for the multicast service identification number, the multicast service identification number does not need to be allocated.
In this embodiment, similarly, whether all configured multicast service identifiers are completely allocated may be determined by a preset flag bit. For example: if the value of the flag bit is True, the configured multicast service identification numbers can be determined to be completely distributed; if the value of the flag bit is False, it can be determined that the configured multicast service identification numbers are not completely allocated.
In one embodiment, the receiving a request for applying for a multicast service identification number further includes:
searching the multicast service identification number in a preset mapping table according to the multicast service identification number application request;
determining that the multicast service applies for a multicast service identification number under the condition that the multicast service identification number is found in a preset mapping table;
and under the condition that the multicast service identification number is not found in a preset mapping table, determining that the multicast service does not apply for the multicast service identification number.
In this embodiment, the preset mapping table is a map table, and the map table is used for storing the multicast service keyword and the corresponding multicast service ID. After receiving the request for applying the multicast service identification number, the multicast service ID is searched in the map table according to the multicast service keyword in the request for applying the multicast service identification number. If the multicast service ID is found in the map table, determining that the multicast service applies for the multicast service ID; otherwise, it is determined that the multicast service does not apply for the multicast service ID.
In one embodiment, the receiving a request for applying for a multicast service identification number further includes:
and setting the multicast service identification number allocated last time as the minimum value under the condition that the multicast service is the first application multicast service identification number.
In this embodiment, after the multicast service identification number allocated last time is set to the minimum value, for example: set to-1, the value of the flag bit that was previously set will also be set to False.
As an example, assuming that the multicast service identification number of the last allocation is set to the minimum value of-1, the allocation will be performed from 0.
In one embodiment, after the distribution is started after the multicast service identification number which is distributed last time, the method further includes:
and under the condition that the allocated multicast service identification number exceeds the range of the configured multicast service identification number, determining that all the configured multicast service identification numbers are allocated.
In this embodiment, the range of the configured multicast service identification number is determined according to the multicast service type and a preset configuration file.
It should be noted that the format of the preset configuration file is not limited, and may be a TXT format or an XML format.
As an example, assume that the key parameters of the preset profile are as shown in the following table:
| field sequence number | Name of field | Meaning of a field |
| 1 | backplaneType | Type of back plate |
| 2 | FixScgidMax | Maximum value of fixed multicast ID |
| 3 | OtnScgidMax | Maximum value of multicast ID of OTN |
| 4 | PtnScgidMax | Maximum value of multicast ID of PTN |
In this table, the maximum value of the multicast ID of the OTN (Optical Transport Network) and the maximum value of the multicast ID of the PTN (Packet Transport Network) are arranged. When the device is restarted, the range of the multicast ID can be determined according to the preset configuration file.
Step S13: and under the condition that the multicast service does not apply for the multicast service identification number, the multicast service does not apply for the multicast service identification number for the first time, and the configured multicast service identification numbers are all distributed, starting distribution from a preset deletion queue.
In one embodiment, the starting of the allocation from the preset deletion queue comprises:
under the condition that the preset deleting queue is empty, returning the information that all multicast service identification numbers are completely distributed;
and under the condition that the preset deletion queue is not empty, starting distribution from the head of the preset deletion queue, and deleting the corresponding multicast service identification number value in the preset deletion queue after distribution is finished.
In this embodiment, the deleted multicast service ID is temporarily stored in the preset deletion queue, the row and column to be allocated are not added first, and the multicast service ID to be allocated is allocated from the preset deletion queue after all the multicast service ID numbers are allocated.
The method for distributing the multicast service identification number of the embodiment of the invention judges and processes the applied multicast service identification number, the first applied multicast service identification number and the complete distribution; the multicast ID can be rapidly distributed under the condition that a large number of multicast services exist, the time complexity is promoted to log2(N) from the original O (N), and the space complexity is changed to O (N) from the original O (1), so that the storable space is saved.
Second embodiment
As shown in fig. 2, a second embodiment of the present invention provides an apparatus for allocating a multicast service identification number, where the apparatus includes a receiving module 21, a first allocating module 22, a second allocating module 23, a third determining module 24, and an allocating module 25;
the receiving module 21 is configured to receive a request for applying a multicast service identification number.
In this embodiment, the request for applying the multicast service identification number includes a multicast service keyword.
The first allocating module 22 is configured to, in a case that the multicast service does not apply for a multicast service identification number, the multicast service does not apply for a multicast service identification number for the first time, and the configured multicast service identification numbers are not completely allocated, start allocation after the multicast service identification number allocated last time.
In this embodiment, whether the multicast service applies for the multicast service identification number for the first time may be determined by a preset flag. For example: if the value of the flag bit is True, determining that the multicast service is a first application multicast service identification number; if the value of the flag bit is False, it is determined that the multicast service is not the first application multicast service identification number.
Conceivably, if the multicast service applies for the multicast service identification number, the multicast service identification number does not need to be allocated.
In this embodiment, it can be determined whether all configured multicast service identifiers are completely allocated by using a preset flag bit. For example: if the value of the flag bit is True, the configured multicast service identification numbers can be determined to be completely distributed; if the value of the flag bit is False, it can be determined that the configured multicast service identification numbers are not completely allocated.
In one embodiment, the determining whether the multicast service has applied for the multicast service identification number by the following method includes:
searching the multicast service identification number in a preset mapping table according to the multicast service identification number application request;
determining that the multicast service applies for a multicast service identification number under the condition that the multicast service identification number is found in a preset mapping table;
and under the condition that the multicast service identification number is not found in a preset mapping table, determining that the multicast service does not apply for the multicast service identification number.
In this embodiment, the preset mapping table is a map table, and the map table is used for storing the multicast service keyword and the corresponding multicast service ID. After receiving the request for applying the multicast service identification number, the multicast service ID is searched in the map table according to the multicast service keyword in the request for applying the multicast service identification number. If the multicast service ID is found in the map table, determining that the multicast service applies for the multicast service ID; otherwise, it is determined that the multicast service does not apply for the multicast service ID.
Referring to fig. 3, in one embodiment, the apparatus further includes a setting module 24;
the setting module 24 is configured to set the multicast service identification number allocated last time as a minimum value when the multicast service is the first application multicast service identification number.
In this embodiment, after setting the multicast service identification number allocated last time to the minimum value, for example: set to-1, the value of the flag bit that was previously set will also be set to False.
As an example, assuming that the multicast service identification number allocated last time is set to the minimum value of-1, the allocation will be performed from 0 at this time.
Referring again to fig. 3, in one embodiment, the apparatus further includes a determination module 25;
the determining module 25 is configured to determine that all the configured multicast service identifiers are completely allocated when the allocated multicast service identifiers exceed the range of the configured multicast service identifiers.
In this embodiment, the range of the configured multicast service identification number is determined according to the multicast service type and a preset configuration file.
It should be noted that the format of the preset configuration file is not limited, and may be a TXT format or an XML format.
By way of example, assume that the key parameters of the preset profile are as shown in the following table:
| field sequence number | Name of field | Meaning of a field |
| 1 | backplaneType | Type of back plate |
| 2 | FixScgidMax | Maximum value of fixed multicast ID |
| 3 | OtnScgidMax | Maximum value of multicast ID of OTN |
| 4 | PtnScgidMax | Maximum value of multicast ID of PTN |
In this table, the maximum value of the multicast ID of the OTN (Optical Transport Network) and the maximum value of the multicast ID of the PTN (Packet Transport Network) are arranged. When the device is restarted, the range of the multicast ID can be determined according to the preset configuration file.
The second allocating module 23 is configured to start allocating from a preset deletion queue when the multicast service does not apply for a multicast service identification number, the multicast service is not a first application multicast service identification number, and all configured multicast service identification numbers are allocated.
In one embodiment, the starting allocation from the preset deletion queue includes:
under the condition that the preset deletion queue is empty, returning all information of the completely distributed multicast service identification numbers;
and under the condition that the preset deletion queue is not empty, starting distribution from the head of the preset deletion queue, and deleting the corresponding multicast service identification number value in the preset deletion queue after distribution is finished.
In this embodiment, the deleted multicast service ID is temporarily stored in the preset deletion queue, the row and column to be allocated are not added first, and the multicast service ID to be allocated is allocated from the preset deletion queue after all the multicast service ID numbers are allocated.
The distribution device of the multicast service identification number of the embodiment of the invention judges and processes the applied multicast service identification number, the first applied multicast service identification number and the complete distribution; the multicast ID can be rapidly distributed under the condition that a large number of multicast services exist, the time complexity is promoted to log2(N) from the original O (N), and the space complexity is changed to O (N) from the original O (1), so that the storable space is saved.
Third embodiment
As shown in fig. 4, a third embodiment of the present invention provides an apparatus for allocating multicast service identification numbers, where the apparatus includes: a memory 31, a processor 32, and a multicast service identification number allocation program stored on the memory 31 and executable on the processor 32, wherein the multicast service identification number allocation program is used for implementing the following steps of the multicast service identification number allocation method when executed by the processor 32:
receiving a request for applying the multicast service identification number;
under the condition that the multicast service does not apply for the multicast service identification number, the multicast service does not apply for the multicast service identification number for the first time, and the configured multicast service identification numbers are not completely distributed, starting to distribute the multicast service identification numbers from the last distributed multicast service identification number;
and under the condition that the multicast service does not apply for the multicast service identification number, the multicast service does not apply for the multicast service identification number for the first time, and the configured multicast service identification numbers are all distributed, starting distribution from a preset deletion queue.
When the program for allocating multicast service identification numbers is executed by the processor 32, the method further implements the following steps:
searching the multicast service identification number in a preset mapping table according to the multicast service identification number application request;
determining that the multicast service applies for a multicast service identification number under the condition that the multicast service identification number is found in a preset mapping table;
and under the condition that the multicast service identification number is not found in a preset mapping table, determining that the multicast service does not apply for the multicast service identification number.
When the program for allocating multicast service identification numbers is executed by the processor 32, the method further implements the following steps:
and setting the multicast service identification number allocated last time as the minimum value under the condition that the multicast service is the first application multicast service identification number.
When the program for allocating multicast service identification numbers is executed by the processor 32, the method further implements the following steps:
and under the condition that the allocated multicast service identification number exceeds the range of the configured multicast service identification number, determining that all the configured multicast service identification numbers are allocated completely.
When the program for allocating multicast service identification numbers is executed by the processor 32, the method further implements the following steps:
and determining the range of the configured multicast service identification number according to the multicast service type and a preset configuration file.
When the program for allocating multicast service identification numbers is executed by the processor 32, the method further includes the following steps:
under the condition that the preset deleting queue is empty, returning the information that all multicast service identification numbers are completely distributed;
and under the condition that the preset deletion queue is not empty, starting distribution from the head of the preset deletion queue, and deleting the corresponding multicast service identification number value in the preset deletion queue after the distribution is finished.
The distribution equipment of the multicast service identification number of the embodiment of the invention judges and processes the applied multicast service identification number, the first applied multicast service identification number and the complete distribution; the multicast ID can be rapidly distributed under the condition that a large number of multicast services exist, the time complexity is promoted to log2(N) from the original O (N), and the space complexity is changed to O (N) from the original O (1), so that the storable space is saved.
Fourth embodiment
A fourth embodiment of the present invention provides a computer-readable storage medium, where a multicast service identification number allocation program is stored on the computer-readable storage medium, and the multicast service identification number allocation program is used to implement the steps of the multicast service identification number allocation method described in the first embodiment when executed by a processor.
The computer-readable storage medium of the embodiment of the invention judges and processes the applied multicast service identification number, the first applied multicast service identification number and all the distribution completion; the multicast ID can be rapidly distributed under the condition that a large amount of multicast services exist, and the time complexity is improved from the original O (n)
log2(N), the space complexity is changed from original O (1) to O (N), saving the storable space.
It should be noted that the device embodiment and the method embodiment belong to the same concept, and specific implementation processes thereof are described in the method embodiment in detail, and technical features in the method embodiment are correspondingly applicable in the device embodiment, which is not described herein again.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and are not to be construed as limiting the scope of the invention. Those skilled in the art can implement the invention in various modifications, such as features from one embodiment can be used in another embodiment to yield yet a further embodiment, without departing from the scope and spirit of the invention. Any modification, equivalent replacement and improvement made within the technical idea of using the present invention should be within the scope of the right of the present invention.
Claims (9)
1. A method for allocating multicast service identification numbers, the method comprising:
receiving a request for applying a multicast service identification number under the condition that a large number of multicast services exist;
under the condition that the multicast service does not apply for the multicast service identification number, the multicast service is not the first application multicast service identification number, and the configured multicast service identification numbers are not completely distributed, starting to distribute the multicast service identification numbers distributed last time;
and under the condition that the multicast service does not apply for the multicast service identification number, the multicast service is not the first application multicast service identification number, and all configured multicast service identification numbers are completely distributed, starting distribution from a preset deletion queue.
2. The method of claim 1, wherein the receiving a request for applying for a multicast service identification number further comprises:
searching the multicast service identification number in a preset mapping table according to the multicast service identification number application request;
determining that the multicast service applies for the multicast service identification number under the condition that the multicast service identification number is found in a preset mapping table;
and under the condition that the multicast service identification number is not found in a preset mapping table, determining that the multicast service does not apply for the multicast service identification number.
3. The method of claim 1, further comprising, after starting the assignment after the multicast service identification number last assigned:
and under the condition that the allocated multicast service identification number exceeds the range of the configured multicast service identification number, determining that all the configured multicast service identification numbers are allocated.
4. The method of claim 3, wherein the range of the configured multicast service identification number is determined according to a multicast service type and a preset configuration file.
5. The method of claim 1, wherein starting allocation from a pre-defined discard queue comprises:
under the condition that the preset deleting queue is empty, returning the information that all multicast service identification numbers are completely distributed;
and under the condition that the preset deletion queue is not empty, starting distribution from the head of the preset deletion queue, and deleting the corresponding multicast service identification number value in the preset deletion queue after the distribution is finished.
6. The distribution device of the multicast service identification number is characterized by comprising a receiving module, a first distribution module and a second distribution module;
the receiving module is used for receiving a multicast service identification number application request under the condition that a large number of multicast services exist;
the first allocation module is configured to start allocation after the last allocated multicast service identification number when the multicast service does not apply for a multicast service identification number, the multicast service is not a first application multicast service identification number, and the allocated multicast service identification numbers are not all allocated;
and the second distribution module is used for starting distribution from a preset deletion queue under the conditions that the multicast service does not apply for the multicast service identification number, the multicast service is not the first multicast service identification number and the configured multicast service identification numbers are all distributed.
7. The apparatus of claim 6, further comprising a determination module;
the determining module is configured to determine that all the configured multicast service identification numbers are completely allocated when the allocated multicast service identification numbers exceed the range of the configured multicast service identification numbers.
8. An apparatus for assigning multicast service identification numbers, the apparatus comprising: a memory, a processor and a multicast service identification number allocation program stored on the memory and operable on the processor, the multicast service identification number allocation program, when executed by the processor, implementing the steps of the multicast service identification number allocation method according to any one of claims 1 to 5.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon an allocation program of multicast service identification numbers, which when executed by a processor implements the steps of the allocation method of multicast service identification numbers according to any one of claims 1 to 5.
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