WO2011093492A1 - Système de distribution d'événement, réseau de distribution d'événement, nœud de distribution d'événement, procédé de distributeur d'événement et support de mémoire lisible par ordinateur - Google Patents

Système de distribution d'événement, réseau de distribution d'événement, nœud de distribution d'événement, procédé de distributeur d'événement et support de mémoire lisible par ordinateur Download PDF

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WO2011093492A1
WO2011093492A1 PCT/JP2011/051918 JP2011051918W WO2011093492A1 WO 2011093492 A1 WO2011093492 A1 WO 2011093492A1 JP 2011051918 W JP2011051918 W JP 2011051918W WO 2011093492 A1 WO2011093492 A1 WO 2011093492A1
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node
event
identifier
partial
identifiers
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PCT/JP2011/051918
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English (en)
Japanese (ja)
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裕樹 多賀戸
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日本電気株式会社
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Priority to JP2011551955A priority Critical patent/JPWO2011093492A1/ja
Publication of WO2011093492A1 publication Critical patent/WO2011093492A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks

Definitions

  • the present invention relates to an event distribution system, an event distribution network, an event distribution node, an event distribution method, and a computer-readable recording medium, and more specifically, for distributing an event transmitted from an event transmission node to an event reception node.
  • the present invention relates to an event distribution system, an event distribution network, an event distribution node, an event distribution method, and a computer-readable recording medium recording a program therefor.
  • Patent Document 1 is a document describing a system (event distribution system) for distributing an event transmitted from a device such as a sensor or RFID (Radio Frequency Identification).
  • the event distribution system has a plurality of processing servers (hereinafter also referred to as event distribution nodes) in a communication network for distributing events.
  • the event distribution node distributes an event transmitted by a device such as a sensor or RFID (hereinafter also referred to as an event transmission node) to an application that processes the event (hereinafter also referred to as an event reception node).
  • FIG. 9 shows an event distribution system described in Patent Document 1.
  • a network (event distribution network) in this event distribution system includes an event processing distributed control device 201, a distribution unit 203, and a plurality of processing servers 204.
  • Each processing server 204 is individually set with a processing rule (event distribution rule) 208 in response to a request from the event receiving node (application) 206.
  • the processing rule 208 defines a condition for distributing an event, for example, “notify an event receiving node when RFID tags of all members are detected”.
  • the event transmission node 205 (device) transmits an event to the sorter 203.
  • the processing server 204 receives the event via the distributor 203 and processes the event according to the processing rule 208. When the condition defined by the processing rule 208 is satisfied, the processing server 204 notifies the event reception node 206 of the event processing result.
  • the event processing distributed control device 201 sets an event processing rule 208 requested by the event receiving node 206 in the processing server 204.
  • the event processing distribution control apparatus 201 sets a distribution rule 207 for the distribution unit 203 so that an event necessary for the distribution unit 203 to execute the processing rule 208 is appropriately distributed.
  • the distributor 203 Upon receiving an event from the event transmission node 205, the distributor 203 transmits the event to the processing server 204 in which the processing rule 208 that should process the event is set according to the distribution rule 207.
  • an event distribution node includes a plurality of processing servers 204, and processing rules 208 registered in the plurality of processing servers 204 are appropriately distributed. In this way, scalability can be realized with respect to an increase in the number of event transmission nodes 205 and an increase in the number of events transmitted to the event distribution network.
  • FIG. 10 shows an event distribution system provided with a plurality of event distribution networks.
  • two event distribution networks 301 are provided in the event distribution system.
  • Each event distribution network 301 includes a distributor 203 and a processing server 204 in FIG.
  • the event distribution network 301 is provided by dividing a region such as a country, a region, and a prefecture.
  • the event distribution network 301 distributes the event transmitted by the subordinate event transmission node 302 to the event reception node 303.
  • event transmission node 302 transmits the event is determined depending on the location where the event transmission node 302 exists. For example, when the event transmission node 302 is an RFID tag attached to a mobile terminal device possessed by the user, when the user moves from one area to another area, the event transmission node 302 moves accordingly. . When the event transmission node 302 moves, the event distribution network 301 to which the event transmission node 302 transmits an event may change before and after the movement.
  • the event reception node 303 In order to receive an event from the event distribution network 301, the event reception node 303 sets a processing rule in the processing server 204 via the event processing distribution control device 201 (see FIG. 9) in the event distribution network 301. There is a need. Therefore, when the event distribution network 301 to which the event transmission node 302 transmits an event is changed, the event reception node 303 is sent to the processing server 204 via the event processing distribution control device 201 in the destination event distribution network 301. It is necessary to newly register the processing rule.
  • the event transmission node 302 transmits events to all event distribution networks 301.
  • the event distribution network 301 does not include any processing server 204 in which a processing rule for processing the event is set. Will be sent.
  • the distribution unit 203 has to check the distribution destination with reference to the distribution rule even though there is no distribution destination, and the processing load on the distribution unit 203 becomes unnecessarily large.
  • the event distribution system has only a single event distribution network 301, the above problem does not occur.
  • the distributor 203 since events always pass through the distributor 203, when the number of event transmission nodes 302 becomes enormous, the distributor 203 must process an enormous number of event events, and the load on the distributor 203 increases. .
  • the distribution unit 203 is configured with a plurality of servers, load distribution can be achieved.
  • each of a plurality of servers constituting the distribution unit 203 has a distribution rule for distributing events from all event transmission nodes 302. I have to remember. For this reason, there arises a problem that the number of distribution rules that must be managed by the event distribution system increases and the management thereof becomes complicated.
  • FIG. 11 shows an event distribution system in which a node identifier having a hierarchical structure is assigned to each node.
  • the event distribution node 401, the event transmission node 402, and the event reception node 403 are each assigned a hierarchical node identifier for uniquely identifying each node.
  • the number of node identifier layers is up to four.
  • the node identifier of each layer is composed of alphanumeric characters, and “.” (Period) is used as a layer delimiter.
  • the event distribution network 400 includes an event distribution node 401 corresponding to the node identifier of the hierarchical event transmission node 402. More specifically, the event distribution network 400 includes an event distribution node 401a (.) Corresponding to the root of the tree structure, and event distribution nodes 401b to 401b in which node identifiers at the hierarchical level 1 of the node identifiers of the event transmission node 402 are set.
  • event distribution network 400 is an event distribution node in which node identifiers up to hierarchical level 4 are set, that is, event distribution nodes 401k to 401m (jp.co.) having the same node identifier as the node identifier of the event transmission node 402. ex.src1, cn.co.ex.src1, kr.co.ex.src1).
  • the process in the event distribution system is broadly divided into a process in which the event receiving node 403 registers an event distribution rule with respect to the event distribution network 400, and the event distribution network 400 receives an event from the event transmission node 402 as an event receiving node. And processing to transmit to 403.
  • the event reception node 403a jp.co.ex.dst1
  • the event transmission node 402c kr.co.ex.src1
  • the event reception node 403a (jp.co.ex.dst1) transmits the event distribution rule to the event distribution node 401a (.).
  • This event distribution rule indicates that when the event transmission node 402c (kr.co.ex.src1) transmits an event, the event is transmitted to the event reception node 403a (jp.co.ex.dst1).
  • the event distribution node 401a (.) Transfers the received event distribution rule to the event distribution node in the lower hierarchy according to the node identifier of the event transmission node included in the event distribution rule.
  • the event distribution rule transmitted by the event reception node 403a indicates that an event from the event transmission node 402c (kr.co.ex.src1) is desired, so the event distribution node 401a (. ) Transmits the event distribution rule to the event distribution node 401d (kr).
  • the event distribution node 401d (kr) transmits the received event distribution rule to the event distribution node 401g (kr.co).
  • the event distribution node 401g (kr.co) transmits the received event distribution rule to the event distribution node 401j (kr.co.ex).
  • the event distribution node 401j (kr.co.ex) transmits the received event distribution rule to the event distribution node 401m (kr.co.ex.src1). Since the event distribution node 401m (kr.co.ex.src1) is an event distribution node corresponding to the event transmission node 402c (kr.co.ex.src1), it stores the received event distribution rule.
  • the above flow corresponds to an arrow indicated by a broken line in FIG.
  • the event transmission node 402c (kr.co.ex.src1) transmits the event to the event distribution node 401a (.).
  • the event distribution node 401a (.) Transmits an event to the event distribution node 401d (kr) according to the node identifier of the event transmission node that is the event transmission source.
  • the event distribution node 401d (kr) transmits the received event to the event distribution node 401g (kr.co).
  • the event distribution node 401g (kr.co) transmits the received event to the event distribution node 401j (kr.co.ex).
  • the event distribution node 401j (kr.co.ex) transmits the received event to the event distribution node 401m (kr.co.ex.src1).
  • the above flow corresponds to an arrow indicated by a solid line in FIG.
  • the event distribution node 401m (kr.co.ex.src1) checks the stored event distribution rule, and when the condition specified by the event distribution rule is satisfied, the event reception node 403a (jp.co.ex.dst1) ) Transmits an event from the event transmission node 402c (kr.co.ex.src1).
  • the event delivery node 401m (kr.co.ex.src1) stores, for example, the address of the event reception node 403a (jp.co.ex.dst1) when referring to the event delivery rule. Then, the event is transmitted to the event receiving node 403a (jp.co.ex.dst1).
  • an event distribution node corresponding to the node identifier of each event reception node 403 is provided in the event distribution network 400, and an event is transmitted from the event distribution node to the event reception node 403a (jp.co.ex.dst1). May be.
  • the event distribution node 401m (kr.co.ex.src1) transmits the event to the event distribution node 401a (.).
  • events are sequentially transferred from the event distribution node 401a (.) To the event distribution node corresponding to the event reception node 403a (jp.co.ex.dst1), and finally the event reception node 403a ( The event is transmitted from the event distribution node corresponding to jp.co.ex.dst1) to the event receiving node 403a (jp.co.ex.dst1).
  • the node identifiers assigned to the event distribution node 401, the event transmission node 402, and the event reception node 403 are hierarchized.
  • the event distribution node 401 transfers the event based on the node identifier of the event transmission node 402 of the event transmission source included in the event.
  • the event distribution rule is transmitted to all event distribution nodes 401. Efficient event distribution can be realized without storing.
  • an event input by a certain event transmission node to the event distribution network 400 is always transmitted via the event distribution node corresponding to the event transmission node that is the transmission source of the event. Delivered to. For this reason, if the number of events transmitted from a certain event transmission node is enormous, or if the number of event reception nodes that want an event transmitted from a certain event transmission node is enormous, the event transmission node There is a problem that the load of the corresponding event delivery node increases.
  • the present invention provides an event distribution system, an event distribution network, an event distribution node, an event distribution method, and a program therefor, which can solve the above-described problems and avoid a load being concentrated on a specific event distribution node.
  • An object is to provide a recorded computer-readable recording medium.
  • the event distribution system is: One or more event transmission nodes and event reception nodes having a hierarchical structure and pre-assigned node identifiers for uniquely identifying the nodes; A node identifier corresponding to the node identifier of the event receiving node is assigned in advance, and an event distribution rule indicating that an event transmitted by a specific event transmitting node is transmitted to a specific event receiving node is registered, and the event One or more notification nodes that transmit an event transmitted from a transmission node to an event reception node having a corresponding node identifier according to the registered event distribution rule; A partial identifier consisting of identifiers up to a specific hierarchical level among node identifiers of the event receiving node is given in advance as a node identifier, and the event transmitted by the event transmitting node is notified according to the hierarchical structure of the node identifier.
  • the forwarding node is Event receiving means for receiving an event from the event transmitting node; Reference is made to a level storage unit that stores one or more hierarchical levels lower than the hierarchical level of the node identifier assigned to the self-forwarding node, and stored in the level storage unit from the node identifier of the event transmission node of the event transmission source First partial identifier extraction means for extracting partial identifiers up to a given hierarchical level; Of the node identifiers of the event transmitting node, partial identifiers up to the hierarchical level stored in the level storage unit, and among the node identifiers of the event receiving nodes, partial identifiers up to the hierarchical level stored in the level storage unit The event delivery destination storage unit stored in association is searched, the partial identifier of the event receiving node stored in association with the partial identifier extracted by the first partial identifier extraction unit is acquired, and the acquired partial identifier is acquired. Event transmitting
  • the event delivery node is: Event distribution having a hierarchical structure and a partial identifier composed of identifiers up to a specific hierarchical level among node identifiers of event receiving nodes having node identifiers uniquely identifying nodes in advance.
  • Event receiving means for receiving an event from an event transmitting node having a hierarchical structure and having a node identifier uniquely identifying the node;
  • a level storage unit that stores one or more hierarchical levels lower than the hierarchical level of the node identifier assigned to the self-forwarding node, and stored in the level storage unit from the node identifier of the event transmission node of the event transmission source
  • First partial identifier extraction means for extracting partial identifiers up to a given hierarchical level; Of the node identifiers of the event transmitting node, partial identifiers up to the hierarchical level stored in the level storage unit, and among the node identifiers of the event receiving nodes, partial identifiers up to the hierarchical level stored in the level storage unit
  • the event delivery destination storage unit stored in association is searched, the partial identifier of the event receiving node stored in association with the partial identifier extracted by the first partial identifier extraction unit is acquired, and the acquired partial identifier is
  • the event distribution network is: A node identifier corresponding to the node identifier of one or more event receiving nodes having a hierarchical structure and uniquely assigned a node identifier that uniquely identifies the node is assigned in advance, and has a hierarchical structure and uniquely identifies the node.
  • An event distribution rule indicating that an event transmitted by a specific event transmission node among one or more event transmission nodes to which a node identifier to be identified is assigned is transmitted to a specific event reception node is registered, and the event transmission
  • a partial identifier consisting of identifiers up to a specific hierarchical level among node identifiers of the event receiving node is given in advance as a node identifier, and the event transmitted by the event transmitting node is notified according to the hierarchical structure of the node identifier.
  • the forwarding node is Event receiving means for receiving an event from the event transmitting node; Reference is made to a level storage unit that stores one or more hierarchical levels lower than the hierarchical level of the node identifier assigned to the self-forwarding node, and stored in the level storage unit from the node identifier of the event transmission node of the event transmission source Partial identifier extraction means for extracting partial identifiers up to a given hierarchical level; Of the node identifiers of the event transmitting node, partial identifiers up to the hierarchical level stored in the level storage unit, and among the node identifiers of the event receiving nodes, partial identifiers up to the hierarchical level stored in the level storage unit The event delivery destination storage unit stored in association is searched, the partial identifier of the event receiving node stored in association with the partial identifier extracted by the partial identifier extraction unit is acquired, and the same node as the acquired partial identifier Event transmit
  • the event delivery method is: A computer receiving an event from an event transmission node having a hierarchical structure and having a node identifier uniquely identifying the node;
  • the computer has a hierarchical structure, and a partial identifier consisting of identifiers up to a specific hierarchical level among the node identifiers of the event receiving node to which a node identifier for uniquely identifying a node is previously assigned is assigned in advance as a node identifier.
  • the level storage unit stores one or more hierarchical levels lower than the hierarchical level of the node identifier of the event distribution node, and the level storage unit stores the node identifier of the event transmission node of the event transmission source in the level storage unit.
  • the computer includes a partial identifier up to a hierarchical level stored in the level storage unit among node identifiers of the event transmitting node, and a partial up to a hierarchical level stored in the level storage unit among node identifiers of the event receiving node Searching an event delivery destination storage unit that stores an identifier in association with each other, and obtaining a partial identifier of the event receiving node stored in association with the extracted partial identifier; A computer transmitting the event to another event distribution node to which the same node identifier as the acquired partial identifier is assigned.
  • a computer-readable recording medium is provided.
  • the node identifier of the event transmission node that is the source of the event is stored in the level storage unit Processing to extract partial identifiers up to the hierarchy level; Of the node identifiers of the event transmitting node, partial identifiers up to the hierarchical level stored in the level storage unit, and among the node identifiers of the event receiving nodes, partial identifiers up to the hierarchical level stored in the level storage unit A process of searching for an event distribution destination storage unit to be stored in association with each other and obtaining a partial identifier of the event reception node stored in association with the extracted partial identifier; A program for executing the process of transmitting the event to another event delivery node assigned with the same node identifier as the acquired partial identifier is recorded.
  • FIG. 1 It is a figure for demonstrating the outline
  • FIG. It is a figure which shows a mode when the event transmission node in the event delivery system of an Example transmits the event. It is a figure which shows the event delivery system of patent document 1.
  • FIG. It is a figure which shows the event delivery system which provided the some event delivery network. It is a figure which shows the event delivery system in which each node has the node identifier hierarchized.
  • FIG. 1 shows an event distribution system of the present invention.
  • the event distribution system of the present invention includes one or more event transmission nodes 21, event reception nodes 22, and notification nodes 23, respectively.
  • the event distribution system of the present invention includes a plurality of forwarding nodes 10.
  • Each of the event transmission node 21 and the event reception node 22 is set with a node identifier that has a hierarchical structure and uniquely identifies each node.
  • a node identifier corresponding to the node identifier of the event reception node 22 is set.
  • a partial identifier composed of identifiers up to a specific hierarchical level among the node identifiers of the event receiving node 22 is set as the node identifier.
  • Each forwarding node 10 and each notification node 23 function as a node (event distribution node) that distributes the event transmitted by the event transmission node 21 to the event reception node 22 in the event distribution network.
  • the forwarding node 10 forwards the event transmitted by the event transmission node 21 toward the notification node 23 according to the hierarchical structure of the node identifier.
  • the notification node 23 stores an event distribution rule 24 indicating that an event transmitted by a specific event transmission node 21 is transmitted to a specific event reception node 22 in a storage device or the like.
  • the notification node 23 transmits the event transmitted by the event transmission node 21 to the event reception node 22 having a node identifier corresponding to the node identifier of the own node according to the event distribution rule 24.
  • the event distribution rule 24 only needs to be referable from the notification node 23 and need not be stored in the notification node 23.
  • the forwarding node 10 includes an event reception unit 11, a partial identifier extraction unit 12, an event transmission unit 13, an event distribution destination storage unit 14, and a level storage unit 15.
  • the level storage unit 15 stores one or more hierarchical levels lower than the hierarchical level of the node identifier set in the self-forwarding node 10.
  • the event distribution destination storage unit 14 stores the partial identifiers up to the hierarchical level stored in the level storage unit 15 among the node identifiers of the event transmission node 21 and the level storage unit 15 among the node identifiers of the event reception node 22.
  • the partial identifiers up to the specified hierarchical level are stored in association with each other.
  • the event distribution destination storage unit 14 and the level storage unit 15 may be configured outside the forwarding node 10.
  • the event reception unit 11 receives an event transmitted from the event transmission node 21.
  • the partial identifier extraction unit (first partial identifier extraction means) 12 refers to the level storage unit 15, and includes the part from the node identifier of the event transmission node 21 that is the event transmission source to the hierarchical level stored in the level storage unit 15. Extract the identifier.
  • the event transmission unit 13 searches the event distribution destination storage unit 14 and acquires the partial identifier of the event reception node 22 stored in association with the partial identifier extracted by the partial identifier extraction unit 12.
  • the event transmission unit 13 transmits the event to another forwarding node 10 or notification node 23 in which the same node identifier as the acquired partial identifier is set.
  • a node identifier having a hierarchical structure is introduced into each of the event transmission node 21, the event reception node 22, the notification node 23, and the forwarding node 10.
  • the forwarding node 10 receives the event transmitted from the event transmission node 21, the partial identifier of the event reception node 22 stored in association with the partial identifier of the event transmission node of the event transmission source from the event distribution destination storage unit 14. To get.
  • the forwarding node 10 transmits the received event to the forwarding node 10 or the notification node 23 in which the same node identifier as the partial identifier acquired from the event distribution destination storage unit 14 is set. By transferring an event between the transfer nodes 10, the event can be transferred to the notification node 23 corresponding to the event receiving node 22 that should process the event.
  • the event distribution network transmits and receives the event between the forwarding nodes 10 according to the hierarchical structure of the node identifier. Then, the event is transferred to the notification node 23 in which the node identifier corresponding to each of the plurality of event receiving nodes 22 that wants to distribute the event is set. If the event is transferred to the event distribution node (notification node) corresponding to the node identifier of the event transmission node, it is necessary to check the event distribution rules corresponding to the plurality of event reception nodes at the notification node. .
  • the event forwarding destination is the notification node 23 corresponding to the node identifier of the event receiving node 22, even if there are a plurality of event receiving nodes 22 that want an event to be transmitted by a certain event transmitting node 21, It can be avoided that the load is concentrated on the event distribution node (notification node 23).
  • FIG. 2 shows an event distribution system according to an embodiment of the present invention.
  • This event distribution system includes an event distribution network 100.
  • the event distribution network 100 distributes the event transmitted by the event transmission node 131 to the event reception node 132.
  • the event distribution network 100 includes a plurality of hierarchical event distribution nodes.
  • the event distribution node is roughly classified into a notification node 102 that transmits an event to the event reception node 132 and a transfer node 101 that transfers the event to the notification node 102.
  • the overall configuration of the event distribution system is the same as that of the event distribution system shown in FIG.
  • node identifiers having a hierarchical structure and uniquely identifying the node are set.
  • the notification node 102 is set with a node identifier corresponding to the node identifier of the event reception node 132.
  • the forwarding node 101 is set with a partial identifier consisting of identifiers up to a specific hierarchical level among the node identifiers of the event receiving node 132 as a node identifier.
  • Each event distribution node (forwarding node 101, notification node 102) can be configured by a computer system that operates under program control.
  • an event distribution rule for processing an event is stored in a storage device (not shown).
  • the event distribution rule indicates that an event transmitted by a specific event transmission node 131 is transmitted to a specific event reception node 132.
  • the event distribution rule includes a node identifier of the event transmission node 131 that is the event transmission source and a node identifier of the event reception node 132 that is the event transmission destination.
  • the event distribution rule includes a condition for transmitting an event to the event reception node 132.
  • Each notification node 101 is registered with an event distribution rule whose event transmission destination is an event reception node 132 having the same node identifier as the node identifier set for the own node.
  • the forwarding node 101 forwards the event transmitted by the event transmission node 131 toward the notification node 102 in which the event distribution rule that should process the event is registered according to the hierarchical structure of the node identifier.
  • the forwarding node 101 holds the address of the forwarding node 101 or the notification node 102 in which the node identifier positioned at the next hierarchical level is set in the hierarchical structure of the node identifier.
  • the notification node 102 receives the event via the forwarding node 101.
  • the notification node 102 uses an inspection unit (not shown) to inspect the event distribution rule related to the event.
  • the notification node 102 transmits the received event to the event reception node 132 having a node identifier corresponding to the node identifier of the own node using an event transmission unit (not shown). To do.
  • FIG. 3 shows the configuration of the forwarding node 101.
  • the forwarding node 101 includes a transmission / reception unit 111, a processing unit 112, an event distribution destination storage unit 113, and a level storage unit 114.
  • the level storage unit 114 stores a hierarchical level that is one level lower than the hierarchical level of the node identifier set in the self-forwarding node 101. In other words, the level storage unit 114 stores information indicating the number of hierarchies in the hierarchy of the layered node identifier that is one level lower than the hierarchy level of the self-forwarding node 101.
  • the event distribution destination storage unit 113 has an event distribution destination table in which a pair of a partial identifier of the node identifier of the event transmission node 131 and a node identifier (identifier list) of an event distribution node serving as one or more event transmission destinations is one entry.
  • the partial identifier is an identifier obtained by extracting a portion from a node identifier to a certain hierarchical level. Since the node identifier of the event distribution node is composed of the partial identifier of the event reception node 132, the event distribution destination storage unit 113 includes the partial identifier of the node identifier of the event transmission node 131 and the nodes in the one or more event reception nodes 132. This is equivalent to storing the partial identifier of the identifier in association with each other.
  • the transmission / reception unit 111 includes an event reception unit 115, an event transmission unit 116, a distribution rule reception unit 117, and a distribution rule transmission unit 118.
  • the event reception unit 115 receives an event transmitted from the event transmission node 131.
  • the event receiving unit 115 receives an event transmitted from the forwarding node 101 in which a node identifier whose hierarchical level is higher than that of the forwarding node 101 is set.
  • the event receiving unit 115 passes the received event to the processing unit 112.
  • the event transmitting unit 116 transmits an event to the forwarding node 101 or the notification node 102 whose hierarchical level is lower than that of the own forwarding node 101 in accordance with an instruction from the processing unit 112.
  • the delivery rule receiving unit 117 receives the event delivery rule transmitted from the event receiving node 132.
  • the distribution rule receiving unit 117 receives an event distribution rule transmitted from the forwarding node 101 in which a node identifier having a higher hierarchical level than the own forwarding node 101 is set.
  • the distribution rule receiving unit 117 passes the received event distribution rule to the processing unit 112.
  • the distribution rule transmission unit 118 transmits the event distribution rule to the transfer node 101 or the notification node 102 having a hierarchical level lower than that of the own transfer node 101 in accordance with an instruction from the processing unit 112.
  • the processing unit 112 includes a partial identifier extraction unit (first partial identifier extraction unit) 119, a transfer destination search unit 120, a partial identifier extraction unit (second partial identifier extraction unit) 121, and an event distribution destination registration unit 122.
  • the partial identifier extraction unit 121 receives an event distribution rule from the transmission / reception unit 111.
  • the partial identifier extraction unit 121 extracts the node identifiers of the event transmission node 131 and the event reception node 132 included in the event distribution rule.
  • the partial identifier extraction unit 121 extracts partial identifiers from the extracted node identifiers to the hierarchical level stored in the level storage unit 114.
  • the extracted partial identifier is equal to the node identifiers of the event transmission node 131 and the event reception node 132. In this specification, such a case is also referred to as a partial identifier for convenience.
  • the partial identifier extraction unit 121 passes the partial identifier extracted from the event distribution rule to the event distribution destination registration unit 122.
  • the event distribution destination registration unit 122 associates the partial identifier of the event transmission node 131 extracted from the event distribution rule with the partial identifier of the event reception node 132 and stores them in the event distribution destination storage unit 113.
  • the event delivery destination registration unit 122 determines whether or not the partial identifier extracted from the node identifier of the event transmission node 131 has been stored in the event delivery destination storage unit 113, that is, the event delivery destination table It is checked whether or not an entry storing a partial identifier extracted from the node identifier of the transmission node 131 already exists.
  • the event distribution destination registration unit 122 determines that the corresponding entry exists, the event identifier of the event reception node 132 is stored in the identifier list of the event reception node 132 stored in association with the recorded partial identifier of the event transmission node 131. Add the partial identifier extracted from.
  • the partial identifier extraction unit 121 passes the partial identifier of the event reception node 132 extracted from the event distribution rule to the distribution rule transmission unit 118 and instructs transmission of the event distribution node.
  • the distribution rule transmission unit 118 receives a node identifier corresponding to the partial identifier passed from the partial identifier extraction unit 121 among the event distribution nodes in which the node identifiers positioned at the next hierarchical level are set.
  • the event distribution rule is transmitted to the set forwarding node 101 or notification node 102.
  • the partial identifier extraction unit 119 receives an event from the transmission / reception unit 111.
  • the partial identifier extraction unit 119 checks the node identifier of the event transmission node 131 that is the event transmission source of the received event.
  • the partial identifier extraction unit 119 refers to the level storage unit 114 and extracts partial identifiers from the node identifier of the event transmission node 131 that is the event transmission source to the hierarchical level stored in the level storage unit 114.
  • the partial identifier extraction unit 119 passes the extracted partial identifier of the event transmission node 131 to the transfer destination search unit 120.
  • the forwarding destination search unit 120 Upon receiving the partial identifier of the event transmission node 131, the forwarding destination search unit 120 searches the event distribution destination storage unit 113 and acquires the partial identifier of the event reception node 132 stored in association with the received partial identifier. When the partial identifiers of a plurality of event reception nodes 132 are stored for the partial identifier of one event transmission node 131, the forwarding destination search unit 120 acquires the partial identifiers of the plurality of event reception nodes 132. . The forwarding destination search unit 120 passes the acquired partial identifier of the event reception node 132 to the event transmission unit 116 and instructs the event transmission. The event transmission unit 116 transmits an event to the forwarding node 101 or the notification node 102 in which the same node identifier as the received partial identifier is set according to the instruction.
  • FIG. 4 shows an operation procedure when the forwarding node 101 receives the event distribution rule.
  • the distribution rule receiving unit 117 receives an event distribution rule from the event receiving node 132 or the forwarding node 101 at a higher hierarchical level (step A1).
  • the distribution rule receiving unit 117 sends the received event distribution rule to the partial identifier extracting unit 121.
  • the partial identifier extraction unit 121 When the partial identifier extraction unit 121 receives the event distribution rule, the partial identifier extraction unit 121 extracts the node identifiers of the event transmission node 131 and the event reception node 132 included in the event distribution rule (step A2). The partial identifier extraction unit 121 acquires the value of the hierarchy level from the level storage unit 114. The partial identifier extraction unit 121 extracts partial identifiers up to the acquired hierarchical level from the node identifier of the event transmission node 131 and the node identifier of the event reception node 132 extracted in step A2 (step A3).
  • the partial identifier extraction unit 121 sends the extracted partial identifiers of the event transmission node 131 and the event reception node 132 to the event distribution destination registration unit 122.
  • the event distribution destination registration unit 122 searches the event distribution destination table stored in the event distribution destination storage unit 113 using the received partial identifier of the event transmission node 131 as a search key (step A4).
  • the event distribution destination registration unit 122 determines whether there is an entry that matches the pair of the partial identifier of the event transmission node 131 and the partial identifier of the event reception node 132 extracted in step A3 (step A5).
  • the event distribution destination registration unit 122 determines that there is no matching entry in step A5 when the entry itself matching the search key does not exist in the event distribution destination table. When there is an entry that matches the search key, the event distribution destination registration unit 122 determines whether or not the partial identifier of the event reception node 132 extracted in step A3 is included in the identifier list of the entry. When the partial identifier of the extracted event receiving node 132 is included in the identifier list, the event distribution destination registration unit 122 determines that there is a matching entry in Step A5, and when not included, the matching entry Is determined not to exist.
  • the event distribution destination storage unit 113 stores the partial identifier of the event transmission node 131 and the partial identifier of the event reception node 132. Are stored (step A6). At that time, when there is no entry itself that matches the partial identifier of the event transmission node 131 in the event distribution destination table, the event distribution destination registration unit 122 generates a new entry, and the event transmission node 131 is included in the entry. And the partial identifier of the event receiving node 132 are stored in association with each other. Further, when there is an entry that matches the partial identifier of the event transmission node 131 in the event distribution destination table, the event distribution destination registration unit 122 includes the extracted event reception node 132 portion in the identifier list of the entry. Add an identifier.
  • the partial identifier extraction unit 121 passes the partial identifier of the event reception node 132 extracted in step A3 to the distribution rule transmission unit 118 and instructs to transmit the event distribution rule to the next event distribution node. To do.
  • the distribution rule transmitting unit 118 sets the event distribution rule to an event distribution node (forwarding node 101 or notification node 102) in which the same node identifier as the partial identifier received from the partial identifier extracting unit 121 is set, that is, It transmits to the event distribution node of a hierarchy level (step A7).
  • step A5 When the event delivery destination registration unit 122 determines that there is a matching entry in step A5 (step A5; Y), the event delivery destination registration unit 122 does not store the partial identifier pair in the event delivery destination storage unit 113. In that case, the processing of the forwarding node 101 proceeds from step A5 to step A7, and the event distribution rule is transferred from the distribution rule transmission unit 118 to the event distribution node at the next hierarchical level without storing the new event distribution destination table. Send.
  • the transfer node 101 transfers the event distribution rule to the event distribution node at the next hierarchical level according to the procedure shown in FIG. 4, so that the event distribution rule finally reaches the notification node 102.
  • the notification node 102 registers the event distribution rule in a storage device (not shown) or the like.
  • the event distribution rule is registered in the notification node 102, preparation for event transmission to the event reception node 132 is completed.
  • FIG. 5 shows an operation procedure when the forwarding node 101 receives an event.
  • the event reception unit 115 receives an event from the event transmission node 132 or the forwarding node 101 in the upper hierarchy (step B1).
  • the event reception unit 115 passes the received event to the partial identifier extraction unit 119.
  • the partial identifier extraction unit 119 When the partial identifier extraction unit 119 receives the event, the partial identifier extraction unit 119 extracts the node identifier of the event transmission node 131 included in the event (step B2). The partial identifier extraction unit 119 acquires the value of the hierarchy level from the level storage unit 114. The partial identifier extraction unit 119 extracts partial identifiers from the node identifier of the event transmission node 131 extracted in step B2 up to the acquired hierarchy level (step B3).
  • the partial identifier extraction unit 119 sends the extracted partial identifier of the event transmission node 131 to the transfer destination search unit 120.
  • the forwarding destination search unit 120 searches the event delivery destination table stored in the event delivery destination storage unit 113 using the received partial identifier of the event transmission node 131 as a key (step B4). As a result of the search, the transfer destination search unit 120 determines whether there is an entry storing the partial identifier of the event transmission node 131 extracted in step B3 (step B5).
  • the transfer destination search unit 120 acquires the identifier list stored in the entry.
  • the forwarding destination search unit 120 passes the partial identifier of the event reception node 132 (the node identifier of the event distribution node) included in the acquired identifier list to the event transmission unit 116 and instructs transmission of the event.
  • the event transmission unit 116 transmits the event received in step B1 to the event distribution node (forwarding node 101 or notification node 102) in which the node identifier included in the identifier list is set (step B6).
  • the transfer destination search unit 120 ends the process as it is.
  • a node identifier having a hierarchical structure is set for each of the event transmission node 131 and the event reception node 132.
  • a node identifier corresponding to the node identifier of the event receiving node 132 is set in the notification node 102, and the forwarding node 101 is set up to a specific hierarchical level among the node identifiers of the event receiving node 132.
  • the forwarding node 101 When the forwarding node 101 receives the event, the forwarding node 101 extracts a partial identifier from the node identifier of the event transmission node 131 that is the event transmission source to a hierarchical level that is one level lower than the hierarchical level of the node identifier set in the own node.
  • the forwarding node 101 acquires the identifier list stored in association with the extracted partial identifier from the event distribution destination storage unit 113, and the event distribution node (forwarding node 101 or notification node 102) of the identifier included in the acquired identifier list.
  • the notification node 102 is a node corresponding to the event reception node 132, the number of events transmitted from a specific event transmission node 131 is enormous, or a specific event transmission node 131. Even when the number of event receiving nodes 132 that want to transmit events from a large number is large, it is possible to suppress an increase in the load of a specific event distribution node.
  • the forwarding node 101 is set as its own node from the node identifier of the event transmission node 131 and the node identifier of the event reception node 132 included in the event distribution rule registered in the notification node 102. Partial identifiers up to a hierarchical level one level lower than the hierarchical level of the node identifier are extracted.
  • the forwarding node 101 stores the extracted partial identifier of the event transmission node 131 and the partial identifier of the event reception node 132 in the event distribution destination storage unit 113 in association with each other.
  • the event transmission node 131 transmits an event
  • the event is stored with an event distribution rule for processing the event. It can be transferred to the node 102.
  • the forwarding node 101 when the forwarding node 101 receives the event distribution rule from the event receiving node 132, the forwarding node 101 is one level lower than the hierarchical level of the node identifier set in the own node extracted from the node identifier of the event receiving node 132.
  • the event distribution rule can be transferred to the notification node 102 corresponding to the event receiving node 132 that is the event transmission destination in the event distribution rule, and the event distribution rule can be registered in the notification node 102. it can.
  • event distribution rules corresponding to each event receiving node 132 can be distributed and registered in a plurality of event distribution nodes.
  • a character string composed of alphanumeric characters is used as a node identifier assigned to an event transmission node, an event reception node, and an event distribution node.
  • “.” (Period) is used as a layer delimiter. Specific examples of node identifiers in each hierarchy are listed below. 0th layer:. (Period) First layer: jp, cn, kr, etc. Second layer: jp.co, cn.co, kr.co, etc. Third layer: jp.co.ex, cn.co.ex, kr.co.ex, etc. Hierarchy: jp.co.ex.src1, jp.co.ex.dst1, etc.
  • the event distribution node corresponding to the node identifier of each hierarchy is set with the address of the event distribution node corresponding to the node identifier of the hierarchy one level lower than its own node identifier, not shown. It is assumed that it is stored in a predetermined storage unit. For example, the event distribution node corresponding to the node identifier. (Period) holds the address of the event distribution node to which a node identifier such as jp, cn, or kr is assigned.
  • the event distribution node with the node identifier jp holds the address of the event distribution node with the node identifier such as jp.co, jp.ne, jp.ad, and the event distribution node with the node identifier cn is cn. It holds the address of the event distribution node to which node identifiers such as co, cn.ne, and cn.ad are assigned.
  • the event distribution node with node identifier receives the event distribution rule transmitted by all event reception nodes. Further, the event distribution node having the node identifier. (Period) receives the event transmitted by all the event transmission nodes. Each event transmission node and each event reception node hold the address of the event distribution server having a node identifier (period).
  • the event distribution node The load may increase.
  • a plurality of event distribution nodes corresponding to the node identifier. (Period) may be installed in the event distribution network.
  • the event distribution network includes an event distribution node (notification node) corresponding to each event reception node. Assume that each notification node stores the address of the corresponding event reception node in a predetermined storage unit (not shown). When the address of the event receiving node changes with the movement of the event receiving node, the event receiving node notifies the corresponding notification node to that effect. The notification node that has received the notification changes the address of the event reception node.
  • FIG. 6 shows a state when the event distribution rule is transferred. It is assumed that the event reception node 132a (jp.co.ex.dst1) wants an event transmitted by the event transmission node 131c (kr.co.ex.src1). The event reception node 132a (jp.co.ex.dst1) sets an event distribution rule indicating that an event is to be received from the event transmission node 131c (kr.co.ex.src1) as an event distribution node (forwarding node) 101a ( .)
  • the level storage unit 114 (see FIG. 3) of the forwarding node 101a (.) Stores the hierarchical level “1”.
  • the partial identifier extraction unit 121 of the forwarding node 101a (.) Extracts the node identifier of the event transmission node and the node identifier of the event reception node from the event distribution rule, and the partial identifier from the node identifier to the hierarchical level “1”. To extract.
  • the partial identifier extraction unit 121 extracts the partial identifier kr from the node identifier kr.co.ex.src1 of the event transmission node, and extracts the partial identifier jp from the node identifier jp.co.ex.dst1 of the event reception node. .
  • the event distribution destination registration unit 122 searches the event distribution destination storage unit 113 using the partial identifier kr of the event transmission node as a key. When there is no entry in which the partial identifier kr is stored in the partial identifier of the event transmission node, the event delivery destination registration unit 122 sets a pair of the partial identifier kr of the event transmission node and the partial identifier jp of the event reception node. And stored in the event distribution destination storage unit 113.
  • the event distribution destination registration unit 122 creates a new entry in the event distribution destination table, stores the partial identifier kr in the partial identifier of the event transmission node of the entry, and stores the node identifier (identifier of the event distribution node)
  • the partial identifier jp of the event receiving node is stored in the list.
  • the distribution rule transmission unit 118 transmits the event distribution rule to the forwarding node 101b (jp) that is the next event distribution node.
  • the level storage unit 114 of the forwarding node 101b (jp) stores the hierarchical level “2”.
  • the partial identifier extraction unit 121 of the forwarding node 101b (jp) extracts the node identifier of the event transmission node and the node identifier of the event reception node from the event distribution rule, and the partial identifier from the node identifier to the hierarchical level “2”. To extract. That is, the partial identifier extraction unit 121 extracts the partial identifier kr.co from the node identifier kr.co.ex.src1 of the event transmission node, and the partial identifier jp. From the node identifier jp.co.ex.dst1 of the event reception node. Extract co.
  • the event distribution destination registration unit 122 searches the event distribution destination storage unit 113 using the partial identifier kr.co of the event transmission node as a key. When there is no entry whose event transmission node has the partial identifier kr.co, the event distribution destination registration unit 122 sets the partial identifier kr.co of the event transmission node and the partial identifier jp.co of the event reception node. The pair is stored in the event distribution destination storage unit 113.
  • the event distribution destination registration unit 122 creates a new entry in the event distribution destination table, stores the partial identifier kr.co in the partial identifier of the event transmission node of the entry, and the node identifier of the event distribution node Stores the partial identifier jp.co of the event receiving node.
  • the distribution rule transmission unit 118 transmits the event distribution rule to the forwarding node 101e (jp.co) that is the next event distribution node.
  • the level storage unit 114 of the forwarding node 101e (jp.co) stores the hierarchical level “3”.
  • the partial identifier extraction unit 121 of the forwarding node 101e (jp.co) extracts the node identifier of the event transmission node and the node identifier of the event reception node from the event distribution rule, and from these node identifiers to the hierarchical level “3”. Extract the partial identifier.
  • the partial identifier extraction unit 121 extracts the partial identifier kr.co.ex from the node identifier kr.co.ex.src1 of the event transmission node, and the partial identifier from the node identifier jp.co.ex.dst1 of the event reception node. Extract jp.co.ex.
  • the event distribution destination registration unit 122 searches the event distribution destination storage unit 113 using the partial identifier kr.co.ex of the event transmission node as a key. When there is no entry whose event transmission node has the partial identifier kr.co.ex, the event distribution destination registration unit 122 and the partial identifier jp of the event reception node and the partial identifier jp of the event reception node A pair with .co.ex is stored in the event distribution destination storage unit 113.
  • the event distribution destination registration unit 122 creates a new entry in the event distribution destination table, stores the partial identifier kr.co.ex in the partial identifier of the event transmission node of the entry,
  • the partial identifier jp.co.ex of the event receiving node is stored in the node identifier.
  • the distribution rule transmission unit 118 transmits the event distribution rule to the forwarding node 101h (jp.co.ex) that is the next event distribution node.
  • the level storage unit 114 of the forwarding node 101h stores the hierarchical level “4”.
  • the partial identifier extraction unit 121 of the forwarding node 101h (jp.co.ex) extracts the node identifier of the event transmission node and the node identifier of the event reception node from the event distribution rule, and the hierarchical level “4” from these node identifiers.
  • the partial identifiers up to are extracted.
  • the partial identifier extraction unit 121 extracts the partial identifier kr.co.ex.src1 from the node identifier kr.co.ex.src1 of the event transmission node, and from the node identifier jp.co.ex.dst1 of the event reception node. Extract the partial identifier jp.co.ex.dst1. Since the node identifier is composed of four layers, the node identifier is equal to the partial identifier extracted up to the fourth layer, but such an identifier is also referred to as a partial identifier for convenience.
  • the event distribution destination registration unit 122 searches the event distribution destination storage unit 113 using the partial identifier kr.co.ex.src1 of the event transmission node as a key. When there is no entry whose event transmission node has the partial identifier kr.co.ex.src1, the event distribution destination registration unit 122, the event transmission node node identifier kr.co.ex.src1, and the event reception node A pair with the node identifier jp.co.ex.dst1 is stored in the event distribution destination storage unit 113.
  • the event distribution destination registration unit 122 creates a new entry in the event distribution destination table, stores the partial identifier kr.co.ex.src1 in the partial identifier of the event transmission node of the entry, and distributes the event.
  • the partial identifier jp.co.ex.dst1 of the event receiving node is stored in the node identifier of the node.
  • the distribution rule transmission unit 118 transmits the event distribution rule to the notification node 102a (jp.co.ex.dst1) that is the next event distribution node.
  • a delivery rule receiving unit receives an event delivery rule transferred from the forwarding node 101a via the forwarding node 101b, forwarding node 101e, and forwarding node 10h.
  • An event delivery rule registration unit stores the event delivery rule in a storage unit (not shown) after confirming that the event transmission destination of the event delivery rule is an event receiving node corresponding to the node identifier of the self notification node. .
  • FIG. 7 shows a state of the event distribution system when transferring another event distribution rule. It is assumed that the event receiving node 132b (cn.co.ex.dst1) wants an event transmitted by the event transmitting node 131c (kr.co.ex.src1). The event reception node 132b (cn.co.ex.src1) transmits to the forwarding node 101a (.) An event distribution rule indicating that an event from the event transmission node 131c (kr.co.ex.src1) is to be received. .
  • the partial identifier extraction unit 121 of the forwarding node 101a (.) Extracts the node identifier of the event transmission node and the node identifier of the event reception node from the event distribution rule, and the partial identifier from the node identifier to the hierarchical level “1”. To extract. That is, the partial identifier extraction unit 121 extracts the partial identifier kr from the node identifier kr.co.ex.src1 of the event transmission node, and extracts the partial identifier cn from the node identifier cn.co.ex.dst1 of the event reception node. .
  • the event distribution destination registration unit 122 searches the event distribution destination storage unit 113 using the partial identifier kr of the event transmission node as a key.
  • the event delivery destination storage unit 113 already stores an entry corresponding to the partial identifier kr of the event sending node when the event delivery rule from the event receiving node 132a (jp.co.ex.dst1) is processed. Yes.
  • the event distribution destination registration unit 122 adds the partial identifier cn of the event receiving node to the node identifier of the event distribution node of the entry.
  • the event distribution destination registration unit 122 adds the partial identifier cn
  • the event distribution destination table stores the partial identifier kr of the event transmission node and the identifier list ⁇ jp, cn ⁇ of the event distribution node in association with each other.
  • the distribution rule transmission unit 118 transmits the event distribution rule to the forwarding node 101c (cn) that is the next event distribution node.
  • the level storage unit 114 of the forwarding node 101c (cn) stores “2”.
  • the partial identifier extraction unit 121 of the forwarding node 101c (cn) extracts the node identifier of the event transmission node and the node identifier of the event reception node from the event distribution rule, and the partial identifier from the node identifier to the hierarchical level “2”. To extract. That is, the partial identifier extraction unit 121 extracts the partial identifier kr.co from the node identifier kr.co.ex.src1 of the event transmission node, and the partial identifier cn. From the node identifier cn.co.ex.dst1 of the event reception node. Extract co.
  • the event distribution destination registration unit 122 searches the event distribution destination storage unit 113 using the partial identifier kr.co of the event transmission node as a key. When there is no entry whose event transmission node has the partial identifier kr.co, the event distribution destination registration unit 122 sets the partial identifier kr.co of the event transmission node and the partial identifier cn.co of the event reception node. The pair is stored in the event distribution destination storage unit 113.
  • the distribution rule transmission unit 118 transmits the event distribution rule to the forwarding node 101f (cn.co) that is the next event distribution node.
  • the level storage unit 114 of the forwarding node 101f stores the hierarchical level “3”.
  • the partial identifier extraction unit 121 of the forwarding node 101e (cn.co) extracts the node identifier of the event transmission node and the node identifier of the event reception node from the event distribution rule, and from these node identifiers to the hierarchical level “3”. Extract the partial identifier.
  • the partial identifier extraction unit 121 extracts the partial identifier kr.co.ex from the node identifier kr.co.ex.src1 of the event transmission node, and the partial identifier from the node identifier cn.co.ex.dst1 of the event reception node. Extract cn.co.ex.
  • the event distribution destination registration unit 122 searches the event distribution destination storage unit 113 using the partial identifier kr.co.ex of the event transmission node as a key. When there is no entry whose event transmission node has the partial identifier kr.co.ex, the event distribution destination registration unit 122 and the partial identifier cn of the event reception node and the partial identifier cn of the event reception node A pair with .co.ex is stored in the event distribution destination storage unit 113.
  • the distribution rule transmission unit 118 transmits the event distribution rule to the forwarding node 101i (cn.co.ex) that is the next event distribution node.
  • the level storage unit 114 of the forwarding node 101i stores the hierarchical level “4”.
  • the partial identifier extraction unit 121 of the forwarding node 101i (cn.co.ex) extracts the node identifier of the event transmission node and the node identifier of the event reception node from the event distribution rule, and the hierarchical level “4” from these node identifiers.
  • the partial identifiers up to are extracted. Since the node identifier is composed of four layers, the extracted partial identifiers are the node identifier kr.co.ex.src1 of the event transmission node and the node identifier cn.co.ex.dst1 of the event reception node, respectively. equal.
  • the event distribution destination registration unit 122 searches the event distribution destination storage unit 113 using the partial identifier kr.co.ex.src1 of the event transmission node as a key. When there is no entry whose event transmission node has the partial identifier kr.co.ex.src1, the event distribution destination registration unit 122, the event transmission node node identifier kr.co.ex.src1, and the event reception node The pair with the node identifier cn.co.ex.dst1 is stored in the event distribution destination storage unit 113.
  • the distribution rule transmission unit 118 transmits the event distribution rule to the notification node 102b (cn.co.ex.dst1) that is the next event distribution node.
  • a delivery rule receiving unit receives an event delivery rule transferred from the forwarding node 101a via the forwarding node 101c, forwarding node 101f, and forwarding node 10i.
  • An event delivery rule registration unit registers the event delivery rule in a storage device (not shown) after confirming that the event transmission destination of the event delivery rule is an event receiving node corresponding to the node identifier of the self notification node. .
  • FIG. 8 shows a state of the event distribution system when the event transmission node transmits an event.
  • the event transmission node 131c (kr.co.ex.src1) transmits the event to the forwarding node 101a (.).
  • the partial identifier extraction unit 119 of the forwarding node 101a (.) Extracts the partial identifier kr up to the hierarchy level “1” from the node identifier kr.co.ex.src1 of the event transmission node.
  • the forwarding destination search unit 120 of the forwarding node 101a (.) Searches the event delivery destination storage unit 113 using the extracted partial identifier kr as a key.
  • the event distribution destination storage unit 113 stores the node identifier ⁇ jp, cn ⁇ of the event distribution node corresponding to the partial identifier kr of the event transmission node (see FIG. 7).
  • the forwarding destination search unit 120 recognizes that there are two event delivery nodes to which an event is to be transmitted, that is, the forwarding node 101b having the node identifier jp and the forwarding node 101c having the node identifier cn. To instruct the two forwarding nodes to transmit the event.
  • the event transmission unit 116 transmits events to the forwarding node 101b (jp) and the forwarding node 101c (cn), respectively.
  • the partial identifier extraction unit 119 of the forwarding node 101b extracts the partial identifier kr.co up to the hierarchy level “2” from the node identifier kr.co.ex.src1 of the event transmission node.
  • the transfer destination search unit 120 searches the event distribution destination storage unit 113 using the partial identifier kr.co as a key.
  • the event distribution destination storage unit 113 stores a node identifier jp.co of the event distribution node corresponding to the partial identifier kr.co of the event transmission node.
  • the forwarding destination search unit 120 recognizes that the event delivery node to which the event is to be sent is the forwarding node 101e with the node identifier jp.co, and instructs the event sending unit 116 to send the event to the forwarding node. To do.
  • the event transmission unit 116 transmits an event to the forwarding node 101e (jp.co).
  • the partial identifier extraction unit 119 of the forwarding node 101e extracts the partial identifier kr.co.ex up to the hierarchy level “3” from the node identifier kr.co.ex.src1 of the event transmission node.
  • the forwarding destination search unit 120 searches the event delivery destination storage unit 113 using the partial identifier kr.co.ex as a key.
  • the event distribution destination storage unit 113 stores a node identifier jp.co.ex of the event distribution node corresponding to the partial identifier kr.co.ex of the event transmission node.
  • the forwarding search unit 120 recognizes that the event delivery node that should transmit the event is the forwarding node 101h of the node identifier jp.co.ex, and sends the event to the forwarding node to the event sending unit 116. Instruct.
  • the event transmission unit 116 transmits an event to the forwarding node 101h (jp.co.ex).
  • the partial identifier extraction unit 119 of the forwarding node 101h obtains partial identifiers kr.co.ex.src1 from the node identifier kr.co.ex.src1 of the event transmission node to the hierarchical level “4”. Extract.
  • the forwarding destination search unit 120 searches the event delivery destination storage unit 113 using the partial identifier kr.co.ex.src1 as a key.
  • the event distribution destination storage unit 113 stores a node identifier jp.co.ex.dst1 of the event distribution node corresponding to the partial identifier kr.co.ex.src1 of the event transmission node.
  • the forwarding destination search unit 120 recognizes that the event delivery node that should transmit the event is the notification node 102a of the node identifier jp.co.ex.dst1, and transmits the event to the forwarding node to the event transmission unit 116. To instruct.
  • the event transmission unit 116 transmits an event to the notification node 102a (jp.co.ex.dst1).
  • the partial identifier extraction unit 119 of the forwarding node 101c (cn) extracts the partial identifier kr.co up to the hierarchy level “2” from the node identifier kr.co.ex.src1 of the event transmission node.
  • the transfer destination search unit 120 searches the event distribution destination storage unit 113 using the partial identifier kr.co as a key.
  • the event distribution destination storage unit 113 stores a node identifier cn.co of the event distribution node corresponding to the partial identifier kr.co of the event transmission node.
  • the forwarding destination search unit 120 recognizes that the event delivery node to which the event is to be sent is the forwarding node 101f with the node identifier cn.co, and instructs the event sending unit 116 to send the event to the forwarding node. To do.
  • the event transmission unit 116 transmits an event to the forwarding node 101f (cn.co).
  • the partial identifier extraction unit 119 of the forwarding node 101f extracts the partial identifier kr.co.ex up to the hierarchy level “3” from the node identifier kr.co.ex.src1 of the event transmission node.
  • the forwarding destination search unit 120 searches the event delivery destination storage unit 113 using the partial identifier kr.co.ex as a key.
  • the event distribution destination storage unit 113 stores the node identifier cn.co.ex of the event distribution node corresponding to the partial identifier kr.co.ex of the event transmission node.
  • the forwarding destination search unit 120 recognizes that the event delivery node to which the event is to be sent is the forwarding node 101i having the node identifier cn.co.ex, and sends the event to the forwarding node to the event sending unit 116. To instruct.
  • the event transmission unit 116 transmits an event to the forwarding node 101i (cn.co.ex).
  • the partial identifier extraction unit 119 of the forwarding node 101i obtains partial identifiers kr.co.ex.src1 from the node identifier kr.co.ex.src1 of the event transmission node to the hierarchical level “4”. Extract.
  • the forwarding destination search unit 120 searches the event delivery destination storage unit 113 using the partial identifier kr.co.ex.src1 as a key.
  • the event distribution destination storage unit 113 stores a node identifier cn.co.ex.dst1 of the event distribution node corresponding to the partial identifier kr.co.ex.src1 of the event transmission node.
  • the forwarding destination search unit 120 recognizes that the event distribution node to which the event is to be transmitted is the notification node 102b with the node identifier cn.co.ex.dst1, and transmits the event to the notification node to the event transmission unit 116. To instruct.
  • the event transmission unit 116 transmits an event to the notification node 102b (cn.co.ex.dst1).
  • the event distribution network 100 transfers events from the forwarding node 101a (.) To the notification node 102a (jp.co.ex.dst1) and the forwarding node 101a (.) To the notification node 102b (cn.co.ex.dst1).
  • the event transfer up to is performed in parallel.
  • the notification node 102a (jp.co.ex.dst1) inspects the received event according to the registered event distribution rule, and then transmits it to the event reception node 132a (jp.co.ex.dst1).
  • the notification node 102b inspects the received event according to the registered event distribution rule, and then transmits the event to the event reception node 132b (cn.co.ex.dst1).
  • event receiving nodes there are two event receiving nodes that want an event from the event transmitting node 131c (kr.co.ex.src1).
  • the event delivery rule is registered in the event delivery node corresponding to the event sending node 131c (kr.co.ex.src1)
  • the event sending node 131c (kr.co.ex.src1) ) Sent the event, the corresponding event delivery node had to check two event delivery rules.
  • the event distribution network 100 transfers the event distribution rule to the event distribution node (notification node) corresponding to the event reception node.
  • each event distribution node stores the node identifier of the event distribution node to which the event should be transferred in the event distribution destination storage unit 113 (see FIG. 3).
  • the event distribution network 100 transfers the event to the event distribution node of the event distribution destination stored in the event distribution destination storage unit 113.
  • the event is transferred to the two notification nodes, and the event distribution rule is inspected at each of the two notification nodes. For this reason, load distribution can be achieved.
  • the event distribution network 100 is provided with the forwarding node 101 in which the node identifier corresponding to each layer of the node identifier of the event receiving node 132 is set.
  • the present invention is limited to such a configuration. There is no.
  • some of the hierarchical levels can be omitted. Specifically, in FIG. 2, the forwarding node 101 at the hierarchical level “” 2 ”is omitted, and the event and event distribution rule are transferred from each forwarding node 101 at the hierarchical level“ 1 ”to the forwarding node 101 at the hierarchical level“ 3 ”.
  • the level storage unit 114 stores the hierarchical level “3” for the partial identifier jp and the hierarchical level “2” for the partial identifier cn.
  • the forwarding node 101 having the node identifier jp transmits the event and the event distribution rule to the forwarding node having the hierarchy level “3”, and the forwarding node having the node identifier cn. , It may transfer the events and event distribution rules to transfer node of the hierarchical level "2".
  • the node identifier of the notification node 102 is matched with the node identifier of the event reception node 132, but the present invention is not limited to this.
  • the event distribution node of the node identifier jp.co.ex is the notification node 102, and the event reception node 132 whose partial identifiers up to the hierarchical level “3” of the node identifier match jp.co.ex
  • the notification node 102 of jp.co.ex may be associated.
  • the notification node 102 with the node identifier jp.co.ex receives an event from the event receiving node 132 such as the node identifiers jp.co.ex.dst1, jp.co.ex.dst2, and jp.co.ex.dst3.
  • a distribution rule may be registered and an event may be transmitted to those event reception nodes 132.
  • the partial identifier is stored in the event distribution destination storage unit 113 when the event distribution rule is transferred.
  • the event distribution rule is transferred and stored in the event distribution destination storage unit 113.
  • the event delivery rule may be registered directly in the notification node 102 from the event receiving node 132 without going through the forwarding node 101, and then stored in the event delivery destination storage unit 113. In that case, information indicating whether a delivery rule registered (registered) in the notification node 102 using any means indicates to which event reception node 132 an event from which event transmission node 131 is transmitted May be provided to the forwarding node 101.
  • the number of hierarchical levels of the node identifier of the event transmitting node is the same as the number of hierarchical levels of the node identifier of the event receiving node, but the number of hierarchical levels of all the node identifiers does not necessarily match. It does not have to be.
  • the node identifier of the level number “3” may be included in the node identifier of the event transmission node.
  • the partial identifier extraction units 119 and 121 when the hierarchical level stored in the level storage unit 114 is a lower hierarchy than the node identifier of the event transmission node, Node identifiers up to a lower hierarchical level may be extracted as partial identifiers.
  • the event delivery rule includes the node identifier com.nec.src1 of the event transmission node and the node identifier jp.co.ex.dst1 of the event reception node.
  • the hierarchical level stored in the level storage unit 114 of a certain event distribution node is the hierarchical level “4”
  • the partial identifier extraction unit 121 of the event distribution node determines the node identifier of the event transmission node in step A3 of FIG.
  • the identifier com.nec.src1 up to the lowest level, that is, the hierarchical level “3” is extracted as a partial identifier, and the identifier jp.co.ex.dst1 from the node identifier of the event receiving node to the hierarchical level “4” is extracted. What is necessary is just to extract as a partial identifier.
  • the event distribution destination registration unit 122 associates the partial identifier com.nec.src1 of the event transmission node with the node identifier jp.co.ex.dst1 of the event reception node, and associates the event distribution destination storage unit 113 may be registered.
  • the event sending node com.nec.src1 sends an event.
  • the hierarchical level stored in the level storage unit 114 of a certain event distribution node is the hierarchical level “4”
  • the partial identifier extraction unit 119 determines from the node identifier of the event transmission node of the event transmission source in step B3 of FIG.
  • the identifier com.nec.src1 up to the lowest level, that is, the hierarchical level “3” may be extracted as a partial identifier.
  • the transfer destination search unit 120 searches for an entry in which the extracted partial identifier com.nec.src1 is stored.
  • the forwarding destination search unit 120 corresponds to the event distribution node (event reception node jp.co.ex.dst1) having the node identifier included in the identifier list of the searched entry, for example, jp.co.ex.dst1 as the node identifier. Event distribution node) may be determined as the event transmission destination.
  • the event delivery system of this invention an event delivery network, an event delivery node, an event delivery method, and a computer-readable recording medium are in the said embodiment.
  • the present invention is not limited thereto, and various modifications and changes from the configuration of the above embodiment are also included in the scope of the present invention.
  • the present invention can be applied to applications using events from sensors and RFID, such as logistics traceability, SCEM (Supply Chain Event Management), environmental management such as weather and disasters.
  • events from sensors and RFID such as logistics traceability, SCEM (Supply Chain Event Management), environmental management such as weather and disasters.
  • Appendix 1 One or more event transmission nodes and event reception nodes having a hierarchical structure and pre-assigned node identifiers for uniquely identifying the nodes; A node identifier corresponding to the node identifier of the event receiving node is assigned in advance, and an event distribution rule indicating that an event transmitted by a specific event transmitting node is transmitted to a specific event receiving node is registered, and the event One or more notification nodes that transmit an event transmitted from a transmission node to an event reception node having a corresponding node identifier according to the registered event distribution rule; A partial identifier consisting of identifiers up to a specific hierarchical level among node identifiers of the event receiving node is given in advance as a node identifier, and the event transmitted by the event transmitting node is notified according to the hierarchical structure of the node identifier.
  • the forwarding node is Event receiving means for receiving an event from the event transmitting node; Reference is made to a level storage unit that stores one or more hierarchical levels lower than the hierarchical level of the node identifier assigned to the self-forwarding node, and stored in the level storage unit from the node identifier of the event transmission node of the event transmission source First partial identifier extraction means for extracting partial identifiers up to a given hierarchical level; Of the node identifiers of the event transmitting node, partial identifiers up to the hierarchical level stored in the level storage unit, and among the node identifiers of the event receiving nodes, partial identifiers up to the hierarchical level stored in the level storage unit The event delivery destination storage unit stored in association is searched, the partial identifier of the event receiving node stored in association with the partial identifier extracted by the first partial identifier extraction unit is acquired, and the acquired partial identifier is acquired.
  • An event distribution system comprising: an event transmission unit configured to transmit the event to a forwarding node or a notification node to which the same node identifier is assigned.
  • the forwarding node is From the event delivery rule registered in the notification node, the node identifier of the event transmission node specified as the transmission source of the event, and the node identifier of the event reception node specified as the transmission destination of the event, respectively, Second partial identifier extraction means for extracting a partial identifier from each extracted node identifier to a hierarchical level stored in the level storage unit; Event distribution destination registration means for storing in the event distribution destination storage unit the partial identifier of the event transmission node and the partial identifier of the event reception node extracted by the second partial identifier extraction means in association with each other;
  • the forwarding node is A distribution rule receiving means for receiving an event distribution rule to be registered in the notification node; Distribution rule transmission means for transmitting
  • the event distribution destination registration unit checks whether or not the partial identifier of the event transmission node extracted by the second partial identifier extraction unit has been stored in the event distribution destination storage unit and has been recorded.
  • the event delivery system according to appendix 2 or 3, wherein the event delivery system is stored.
  • Event distribution having a hierarchical structure and a partial identifier composed of identifiers up to a specific hierarchical level among node identifiers of event receiving nodes having node identifiers uniquely identifying nodes in advance.
  • Event receiving means for receiving an event from an event transmitting node having a hierarchical structure and having a node identifier uniquely identifying the node;
  • a level storage unit that stores one or more hierarchical levels lower than the hierarchical level of the node identifier assigned to the self-forwarding node, and stored in the level storage unit from the node identifier of the event transmission node of the event transmission source
  • First partial identifier extraction means for extracting partial identifiers up to a given hierarchical level; Of the node identifiers of the event transmitting node, partial identifiers up to the hierarchical level stored in the level storage unit, and among the node identifiers of the event receiving nodes, partial identifiers up to the hierarchical level stored in the level storage unit
  • the event delivery destination storage unit stored in association is searched, the partial identifier of the event receiving node stored in association with the partial identifier extracted by the first partial identifier extraction unit is acquired, and the acquired partial identifier is
  • An event distribution node comprising: event transmission means for transmitting the event to another event distribution node to which the same node identifier is assigned.
  • event transmission means for transmitting the event to another event distribution node to which the same node identifier is assigned.
  • Appendix 6 From the event distribution rule registered in the event distribution node that transmits the event to the event reception node, the node identifier of the event transmission node specified as the transmission source of the event, and the transmission destination of the event A second partial identifier extracting means for extracting a node identifier of each event receiving node to be extracted and extracting a partial identifier from each extracted node identifier to a hierarchical level stored in the level storage unit;
  • Event distribution destination registration means for storing in the event distribution destination storage unit the partial identifier of the event transmission node and the partial identifier of the event reception node extracted by the second partial identifier extraction means in association with each other;
  • the event delivery node according to appendix 5, further comprising: (App
  • the event distribution destination registration unit checks whether or not the partial identifier of the event transmission node extracted by the second partial identifier extraction unit has been stored in the event distribution destination storage unit and has been recorded.
  • a node identifier corresponding to the node identifier of one or more event receiving nodes having a hierarchical structure and uniquely assigned a node identifier that uniquely identifies the node is assigned in advance, and has a hierarchical structure and uniquely identifies the node.
  • An event distribution rule indicating that an event transmitted by a specific event transmission node among one or more event transmission nodes to which a node identifier to be identified is assigned is transmitted to a specific event reception node is registered, and the event transmission
  • a partial identifier consisting of identifiers up to a specific hierarchical level among node identifiers of the event receiving node is given in advance as a node identifier, and the event transmitted by the event transmitting node is notified according to the hierarchical structure of the node identifier.
  • the forwarding node is Event receiving means for receiving an event from the event transmitting node; Reference is made to a level storage unit that stores one or more hierarchical levels lower than the hierarchical level of the node identifier assigned to the self-forwarding node, and stored in the level storage unit from the node identifier of the event transmission node of the event transmission source Partial identifier extraction means for extracting partial identifiers up to a given hierarchical level; Of the node identifiers of the event transmitting node, partial identifiers up to the hierarchical level stored in the level storage unit, and among the node identifiers of the event receiving nodes, partial identifiers up to the hierarchical level stored in the level storage unit The event delivery destination storage unit stored in association is searched, the partial identifier of the event receiving node stored in association with the partial identifier extracted by the partial identifier extraction unit is acquired, and the same node as the acquired partial identifier An event
  • the forwarding node is From the event distribution rule registered in the notification node, the node identifier of the event transmission node specified as the event transmission source and the node identifier of the event reception node specified as the event transmission destination are respectively extracted and extracted.
  • Second partial identifier extraction means for extracting a partial identifier from each node identifier to a hierarchical level stored in the level storage unit;
  • Event distribution destination registration means for storing in the event distribution destination storage unit the partial identifier of the event transmission node and the partial identifier of the event reception node extracted by the second partial identifier extraction means in association with each other;
  • the forwarding node is A distribution rule receiving means for receiving an event distribution rule to be set in the notification node; Distribution rule transmission means for transmitting the event distribution rule to a forwarding node or notification node assigned with the same node identifier as the partial identifier of the event reception node extracted by the second partial identifier extraction means The event delivery network according to appendix 10.
  • the event distribution destination registration unit checks whether or not the partial identifier of the event transmission node extracted by the second partial identifier extraction unit has been stored in the event distribution destination storage unit and has been recorded.
  • the event delivery network according to Supplementary Note 10 or Supplementary Note 11, which is stored.
  • a computer receiving an event from an event transmission node having a hierarchical structure and having a node identifier uniquely identifying the node;
  • the computer has a hierarchical structure, and a partial identifier consisting of identifiers up to a specific hierarchical level among the node identifiers of the event receiving node to which a node identifier for uniquely identifying a node is previously assigned is assigned in advance as a node identifier.
  • the level storage unit stores one or more hierarchical levels lower than the hierarchical level of the node identifier of the event distribution node, and the level storage unit stores the node identifier of the event transmission node of the event transmission source in the level storage unit.
  • the computer includes a partial identifier up to a hierarchical level stored in the level storage unit among node identifiers of the event transmitting node, and a partial up to a hierarchical level stored in the level storage unit among node identifiers of the event receiving node Searching an event delivery destination storage unit that stores an identifier in association with each other, and obtaining a partial identifier of the event receiving node stored in association with the extracted partial identifier; A computer transmitting the event to another event distribution node to which the same node identifier as the acquired partial identifier is assigned.
  • the event delivery method further comprising a step of transmitting the event delivery rule to an event delivery node to which the same node identifier as the partial identifier of the extracted event receiving node is assigned.
  • Appendix 16 In the step of storing in the event delivery destination storage unit, the computer checks whether or not the extracted partial identifier of the event transmission node has been stored in the event delivery destination storage unit, and if it has been recorded The supplementary item 14 or the supplementary note 15, wherein the extracted partial identifier of the event reception node is stored in addition to the partial identifier of the event reception node stored in association with the partial identifier of the recorded event transmission node. Event delivery method.
  • the node identifier of the event transmission node that is the source of the event is stored in the level storage unit Processing to extract partial identifiers up to the hierarchy level; Of the node identifiers of the event transmitting node, partial identifiers up to the hierarchical level stored in the level storage unit, and among the node identifiers of the event receiving nodes, partial identifiers up to the hierarchical level stored in the level storage unit A process of searching for an event distribution destination storage unit to be stored in association with each other and obtaining a partial identifier of the event receiving node stored in association with the extracted partial identifier; A computer-readable recording medium storing a program for executing a process of transmitting the event to another event distribution node assigned with the same node identifier as the acquired partial identifier.
  • Appendix 18 A computer-readable recording medium according to appendix 17, The program is On the computer, From the event distribution rule registered in the event distribution node that transmits the event to the event reception node, the node identifier of the event transmission node specified as the transmission source of the event, and the transmission destination of the event Each of the node identifiers of the event receiving node to be extracted, a process of extracting a partial identifier from each extracted node identifier to the hierarchical level stored in the level storage unit; A process of further storing the extracted partial identifier of the event transmission node and the partial identifier of the event reception node in association with each other is stored in the event distribution destination storage unit.
  • (Appendix 19) The computer-readable recording medium according to appendix 18, The program is On the computer, Processing to receive the event delivery rule; The event distribution node having the same node identifier as the partial identifier of the extracted event receiving node is further executed to transmit the event distribution rule.
  • (Appendix 20) The computer-readable recording medium according to appendix 18 or 19, The program is In the process of storing in the event distribution destination storage unit, the event distribution destination storage unit checks whether or not the extracted partial identifier of the event transmission node has been stored. The extracted partial identifier of the event receiving node is added to the partial identifier of the event receiving node stored in association with the partial identifier of the event transmitting node.
  • Event distribution network 101 Forwarding node (event distribution node) 102: Notification node (event distribution node) 111: Transmission / reception unit 112: Processing unit 113: Event distribution destination storage unit 114: Level storage unit 115: Event reception unit 116: Event transmission unit 117: Distribution rule reception unit 118: Distribution rule transmission unit 119, 121: Partial identifier extraction unit 120: Forwarding destination search unit 122: Event distribution destination registration unit 131: Event transmission node 132: Event reception node

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  • Engineering & Computer Science (AREA)
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  • Signal Processing (AREA)
  • Information Transfer Between Computers (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)

Abstract

L'invention porte sur un système de distribution d'événement dans lequel des identifiants partiels, constitués d'identifiants allant jusqu'à un niveau hiérarchique spécifique parmi des identifiants de nœud de nœuds de réception d'événement (22), sont octroyés à l'avance à des nœuds de transfert (10) à titre d'identifiants de nœud. Une unité de réception d'événement (11) reçoit un événement provenant d'un nœud d'envoi d'événement (21). Une unité d'extraction d'identifiants partiels (12) extrait des identifiants partiels allant jusqu'à un niveau hiérarchique stocké dans une unité de mémoire de niveau (15), parmi des identifiants du nœud d'envoi d'événement (21) qui est la source d'envoi d'événement. Une unité d'envoi d'événement (13) consulte une unité de mémoire de destination de distribution d'événement (14) afin d'obtenir des identifiants partiels de nœuds de réception d'événement stockés en association avec des identifiants partiels extraits par l'unité d'extraction d'identifiants partiels (12), et envoie l'événement à des nœuds de transfert (10) ou des nœuds de notification (23) auxquels sont attribués des identifiants de nœud identiques aux identifiants partiels obtenus.
PCT/JP2011/051918 2010-02-01 2011-01-31 Système de distribution d'événement, réseau de distribution d'événement, nœud de distribution d'événement, procédé de distributeur d'événement et support de mémoire lisible par ordinateur WO2011093492A1 (fr)

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CN109213883A (zh) * 2018-08-22 2019-01-15 清华大学深圳研究生院 灾害模型群服务链编排方法及装置、终端、存储介质

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109213883A (zh) * 2018-08-22 2019-01-15 清华大学深圳研究生院 灾害模型群服务链编排方法及装置、终端、存储介质

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