KR100753817B1 - Web-based enterprise management client, server, system and the method thereof - Google Patents

Abstract

Disclosed are a web-based system management client, server, system, and method thereof. The client includes a message encoding unit which selects an encoding scheme of a request message to a server from an XML encoding scheme or a fast Infoset encoding scheme according to a preset criterion, and encodes the request message using the selected encoding scheme; An HTTP conversion unit for converting the encoded message into an HTTP request message according to the HTTP protocol; And a server connection unit which transmits the HTTP request message to the server. According to the present invention, it is possible to efficiently transmit a message in an environment for managing a web-based system, and to improve compatibility with future international standards.

Description

Web-based enterprise management client, server, system and the method

1 is a diagram illustrating a general system based on the WBEM standard.

2 is a block diagram showing the configuration of a system for managing a web-based system according to an embodiment of the present invention.

3 is a flowchart illustrating the operation of a system and method for managing a web-based system according to an embodiment of the present invention.

4 is a flowchart illustrating operations of a web-based system management client and a request method according to an embodiment of the present invention.

5 is a flowchart illustrating an operation of a web-based system management server and a response method according to an embodiment of the present invention.

The present invention relates to a method for managing a web-based system, and more particularly, to a method for transmitting and receiving a message for system management between a server and a client in a web-based system.

In the WBEM standards-based system, Common Information Model (hereinafter referred to as CIM) operation is used to effectively control, monitor and manage heterogeneous platforms and various system resources on the same platform. According to the WBEM standard, a common information model operation is expressed only in XML (eXtensible Markup Language) according to the XML Document Type Definition (DTD) format, and then it is transmitted and received between the WBEM client and the WBEM server using the HTTP protocol. .

The most significant advantage of XML is its strong extensibility, which allows you to add any tag as long as both parties send and receive XML messages, and can be easily interpreted by a computer program or a person. However, because XML stores information in text because of its inherent nature, the size of a document is relatively large. Therefore, sending and receiving XML data over a network can cause a large amount of traffic and require a relatively large amount of bandwidth. It exists. In addition, due to the nature of system management, there is a restriction to minimize the resources of the managed system. Also, when the managed system is miniaturized and lightened, such as a ubiquitous environment, performance may be an important issue.

Recently, Fast Infoset technology, adopted as an ITU-T standard and ISO / IEC 24824-1 international standard, solves the above disadvantages of XML and can solve the most problematic compatibility problem through the standard.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a web-based system management client, a server, and a management system capable of efficiently transmitting a message for managing a web-based system.

Another technical problem to be achieved by the present invention is to provide a request method of a web-based system management client, a response method of a management server, and a method of managing a web-based system that can efficiently transmit a message for managing a web-based system. There is.

In order to achieve the above technical problem, the web-based system management client according to the present invention selects an encoding scheme of a request message to a server from an XML encoding scheme or a fast Infoset encoding scheme according to a preset criterion, and selects the selected request message from the selected scheme. A message encoding unit encoding the encoding method; An HTTP conversion unit for converting the encoded message into an HTTP request message according to the HTTP protocol; And a server connection unit which transmits the HTTP request message to the server.

In order to achieve the above technical problem, a web-based system management server according to the present invention includes a client connection unit for receiving an HTTP request message from a client; An HTTP inverse transform unit which inversely converts the received HTTP request message into an encoded request message according to an HTTP protocol and detects an encoding scheme of the encoded request message; And a message decoder which decodes the encoded request message by a decoding method corresponding to the detected encoding method.

In order to achieve the above technical problem, a system for managing a web-based system according to the present invention selects an encoding scheme of a request message from an XML encoding scheme or a fast Infoset encoding scheme according to a preset criterion, and selects the selected request message from the selected scheme. A client that encodes using an encoding scheme and transmits the encoding by the HTTP protocol; And a server that detects an encoding scheme of the received encoded request message and decodes the encoded request message.

According to another aspect of the present invention, a method for requesting a web-based system management client according to the present invention includes (a) selecting an encoding method of a request message to a server from an XML encoding method or a fast Infoset encoding method according to a preset criterion; Encoding the request message by the selected encoding scheme; (b) converting the encoded message into an HTTP request message according to the HTTP protocol; And (c) transmitting the HTTP request message to the server.

According to another aspect of the present invention, a method for responding to a web-based system management server according to the present invention includes: (a) receiving an HTTP request message from a client; (b) inversely converting the received HTTP request message into an encoded request message according to an HTTP protocol and detecting an encoding scheme of the encoded request message; And (c) a message decoder which decodes the encoded request message by a decoding method corresponding to the detected encoding method.

According to another aspect of the present invention, there is provided a method for managing a web-based system according to the present invention, wherein (a) a client encodes a request message to a server according to a preset criterion. Selecting, encoding the request message using the selected encoding scheme and transmitting the same by using the HTTP protocol; And (b) the server detecting the encoding scheme of the received encoded request message and decoding the encoded request message.

Hereinafter, a method and an apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

In this specification, for convenience, description will be made on the assumption of a Web-based Enterprise Management (WBEM) environment. However, the present invention can be applied to managing a general web-based system.

The present invention provides a method of expressing a common information model operation through Fast Infoset in addition to the expression method of XML defined in the WBEM standard, so that a user selects an appropriate method according to a system operating environment. By eliminating the shortcomings of XML and maintaining its advantages, it can improve the performance of sending and receiving messages between server and client. Fast Infoset is an ITU-T X.891 and ISO / IEC 24824-1 standard. Faster encoding and decoding than the same XML document, while the size of the generated document is much smaller. Has a strong extensibility, and according to the present invention, it is possible to take advantage of each representation method and obtain efficient message transmission.

However, when encoding CIM operation request message or CIM operation response message using Fast Infoset, CIM operation request message or CIM is not converted into actual XML and then converted into Fast Infoset document through Fast Infoset. Conceptually convert the operation response message to the corresponding XML Infoset and then to a Fast Infoset document. That is, the actual processing process is a CIM operation request message or a CIM operation response message is directly encoded into a Fast Infoset document. The same applies to decrypting a Fast Infoset document.

1 is a diagram illustrating a general system based on the WBEM standard.

The WBEM client 101 typically expresses a CIM operation in XML and then generates an HTTP message to request system management information from the WBEM server 102. The request message sent to the WBEM server 102 analyzes the HTTP message header through the client interface 111 responsible for direct matching with the WBEM client, and then parses the XML, the body of the message, and then acts as a broker. The CIM object manager 113 transmits the CIM object manager 113. When the CIM object manager 113 wants to extract information from the repository 117 and respond to it according to the type of the requested message, the CIM object manager 113 may store related information from the repository 117 through the repository interface 116. If the user wants to extract information from the managed elements 105 or extracts the information directly from the managed elements 105, the related information is managed by the provider interface 115 through the provider interface 115. Request to extract from 105.

The extracted system management information is transferred back to the client interface 111 through the CIM object management unit 113, and the WBEM client 101 that has expressed the response message in XML and then generated the HTTP message to call the information. Return).

However, if the WBEM server 102 requires the user's authentication function separately, the WBEM server 102 may authenticate the user from the authentication server 103 through the security interface 114. In the case of the WBEM listener 101 that receives dynamic indication information other than 101, the interface with the WBEM server 102 is an indication handler 112.

2 is a block diagram showing a configuration of a system for managing a web-based system according to an embodiment of the present invention, and is generally, a client 200, a server 220, a provider 240, a repository. ) 250 and managed elements 260.

As described above, the client 200 prepares an HTTP request message according to a user's command and transmits it to the server 220, and then receives an HTTP response message from the server to decode the message. Specifically, the client 200 may include a management application 201, a client application interface 202, a message encoder 203, a message decoder 204, HTTP conversion and inverse conversion. An encapsulator / decapsulator 209 and a server connection unit 212 may be included.

The system administrator (or user) selects a representation method of the CIM operation message to be used through the management application 201 and the result is stored as an environment variable of the client. That is, it is selected whether it is a Fast Infoset encoding method or an XML encoding method. Examples of the selection criterion of the coding scheme include, but are not limited to, the data amount of the CIM operation request message, the traffic state of the network, and the like.

The system administrator (or user) establishes an HTTP connection with the WBEM server through the management application 201 and then requests arbitrary system management information.

The client application interface 202 generates the request as a CIM operation request message and then provides the generated CIM operation request message to the message encoder 203 according to a value stored in the environment variable, that is, an encoding scheme.

The message encoder 203 includes a FastInfoset encoder 205 and an XML encoder 206. Note that the determining method of the encoding method is not limited to the client application interface 202, and the message encoding unit 203 itself may access the environment variable to determine the encoding method independently.

The FastInfoset encoder 205 performs encoding that expresses the CIM operation request message provided from the client application interface 202 by the FastInfoset method. Similarly, the XML encoder 206 performs encoding that expresses the CIM operation request message provided from the client application interface 202 in an XML manner.

The HTTP converting and inverse transforming unit 209 includes an HTTP encapsulator 210 and an HTTP decapsulator 211. The HTTP conversion unit 210 generates an HTTP request message by adding an HTTP header to the encoded CIM operation request message.

The server connection unit 212 transmits the generated HTTP request message to the HTTP port set in the server connected initially. After transmitting the HTTP request message, the server connection unit 212 keeps waiting for the HTTP connection for a predetermined time and continues to wait for the HTTP response message, and when the time elapses, attempts to reconnect or returns an error as a result. When the server connection unit 212 receives the HTTP response message from the server 220, the server connection unit 212 transmits the received HTTP response message to the HTTP inverse transform unit 209.

The HTTP reverse converter 211 removes the HTTP header from the HTTP response message and then delivers the message to the message decoder 204. The message decoder 204 includes a fast infoset decoder 207 and an XML decoder 208. That is, the message from which the HTTP header is removed is sent to the Fast Infoset decryption unit 207 or the XML decryption unit 208 according to the Content-Type value for the Multipurpose Internet Mail Extension (MIME) Type of the HTTP header or the value stored in the environment variable. It is delivered and decrypted by Fast Infoset decryption or XML decryption. The decoding method is performed by a decoding method corresponding to the encoding method of the common information model operation request message.

The client application interface 202 finally returns the CIM operation response message provided from the fast infoset decoder 207 or the XML decoder 208 to the management application 201.

As described above, the server 220 performs an operation using the provider 240, the storage 250, and the management target 260 according to the received HTTP request message, and then generates an HTTP response message. Perform a function of transmitting to (200). Specifically, the server 220 includes a client connection unit 221, an HTTP conversion and inverse conversion unit (Encapsulator / Decapsulator) 222, a message encoder 225, a message decoder 226, and a CIM object manager 231. It may be made, including.

The client connection unit 221 continuously monitors the port since the HTTP connection with the WBEM client 200 is made, records the corresponding port number when an HTTP request message arrives, and transmits the port number to the HTTP conversion and reverse conversion unit 222.

The HTTP conversion and reverse conversion unit 222 includes an HTTP conversion unit 223 and an HTTP reverse conversion unit 224. The HTTP inverse transform unit 224 checks whether the HTTP message is in error, and then reads the Content-Type value for the MIME Type of the header to determine whether the encoding method is XML or Fast Infoset, and decodes the body of the HTTP request message as the message decoder 226. ) To the Fast Infoset decoder 229 or the XML decoder 230. If the XML and Fast Infoset are set to use different HTTP ports, the encoding method can also be checked by the port number. In this case, the step of checking the Content-Type of the HTTP header can be omitted. In the latter method, HTTP and HTTPS port numbers for Fast Infoset are separately defined in addition to HTTP and HTTPS port numbers 5998 and 5989 specified in the WBEM standard, and the corresponding encoding method is defined through the port number to which the CIM operation request message is sent. To detect.

The message decoder 226 includes a FastInfoset decoder 229 and an XML decoder 230. The FastInfoset decoding unit 229 or the XML decoding unit 230 decodes the message received from the HTTP inverse transform unit 224 by the Fast Infoset decoding method or the XML decoding method, and restores the CIM operation request message.

The CIM object manager 231 performs a broker function for routing the CIM object. In detail, the CIM object manager 231 extracts a result value from the provider 240 for the repository 250 or each management target 260 according to the type of the CIM operation request message. Then, the CIM object management unit 231 encodes the generated CIM operation response message by Fast Infoset encoding of the message encoding unit 225 so that the generated result value is encoded into the CIM operation response message, according to the encoding method of the CIM request message. The data is transmitted to the unit 227 or the XML encoder 228.

The message encoder 225 includes a fast infoset encoder 227 and an XML encoder 228. The FastInfoset encoder 227 encodes the CIM operation response message provided from the CIM object manager 231 by using the FastInfoset method. Similarly, the XML encoder 228 performs encoding that expresses the CIM operation response message provided from the CIM object manager 231 in an XML manner.

The HTTP conversion unit 223 adds an HTTP header to the encoded CIM operation response message to generate an HTTP response message.

The client connection unit 221 transmits an HTTP response message to the client 200 requesting information while maintaining the HTTP connection.

3 is a flowchart illustrating the operation of a system and method for managing a web-based system according to an embodiment of the present invention.

First, the client 200 encodes the common information model operation request message by using the XML encoding method or the Fast Infoset encoding method, and transmits the information by the HTTP protocol (S300). Here, examples of the criterion for determining the encoding scheme include the data amount of the common information model operation request message and the traffic state of the network. This is because the fast infoset method may generally be advantageous when there is a large amount of data or when there is a heavy traffic on the network.

After the server 220 receives the encoded common information model operation request message, the server 220 detects an encoding scheme of the encoded common information model operation request message. Next, the encoded common information model operation request message is decoded by a decoding scheme corresponding to the detected encoding scheme, and the requested operation is performed (S310). Examples of a method of detecting an encoding scheme include a method of detecting the encoding scheme from a Contents Type value corresponding to the MIME Type of the HTTP protocol header, a method of detecting the encoding scheme using a port number of the client 200, and the like. It may include, but is not necessarily limited to this.

After the step S310, the server 220 encodes the common information model operation response message according to the execution of the operation according to the detected encoding scheme and transmits the same to the client 200 through the HTTP protocol (S320).

After receiving the encoded common information model operation response message using the HTTP protocol, the client 200 may decode the encoded common information model operation response message using a decoding method corresponding to the encoding method of the common information model operation request message. Decode (S330).

4 is a flowchart showing the operation of the web-based system management client 200 and the request method according to an embodiment of the present invention. That is, the procedure of the CIM operation request and response of the client 200 is shown, and specific examples of steps S300 and S330 of FIG. 3 are shown.

First, after a series of processes such as initializing the client 200, the system administrator (or user) calls the CIM operation through the management application (201) (S400), CIM through the client application interface 202 An operation request message is generated and it is determined whether to apply Fast Infoset or XML based on the environment variable value set at initialization (S405).

When it is determined that Fast Infoset is applied (S405), encoding by the Fast Infoset encoder 205 is applied to the CIM operation request message (S410), and when it is determined that Fast Infoset is not applied (S405), XML encoding The encoding by the unit 206 is applied to the CIM operation request message (S415).

The encoded CIM operation request message is transmitted by the HTTP conversion unit 210 to the HTTP port set in the server 220 initially connected by the server connection unit 212 after the HTTP header is added (S420) ( S425).

Next, the arrival of the HTTP response message from the server 220 is monitored by the server connection unit 212 (S430). If you do not receive the HTTP response message (S430), it continues to monitor until it arrives. However, after transmitting the HTTP request message, the server connection unit 212 may continue to wait for the HTTP response message while maintaining the HTTP connection for a predetermined time, and attempt to reconnect or return an error if the time elapses. When the HTTP response message is received (S430), after the HTTP header is removed by the HTTP inverse transform unit 211 from the received HTTP response message (S435), Fast according to the value stored in the environment variable or the MIME Type value of the HTTP header. Decoded by the Infoset decoder 207 or the XML decoder 208 to restore the CIM operation response message. That is, by checking the value stored in the environment variable or the MIME Type value of the HTTP header, if the CIM operation request message is encoded in the Fast Infoset encoding method in steps S405 to S410 (S440), the message from which the HTTP header is removed is Fast. If the CIM operation request message is encoded by the XML encoding scheme (S440), the message from which the HTTP header is removed is decoded by the XML decryption scheme (S450). In other words, the response message is decrypted according to the same method applied to the request message.

The restored CIM operation response message is finally returned to the management application 201 by the client application interface 202 (S455). The management application 201 then provides the user with the information contained in the CIM operation response message. Through the above process, request and response processing for one CIM operation is terminated.

5 is a flowchart illustrating the operation of the web-based system management server 220 and the response method according to an embodiment of the present invention. That is, the response procedure of the server 220 to the request message is shown, and specific examples of steps S310 and S320 of FIG. 3 are shown.

The server 220 is driven and initialized. Next, the client connection unit 221 of the server 220 accepts the HTTP connection request from any client 200 and initializes the connection (S500), and waits for transmission of the HTTP request message (S505).

If the HTTP request message is not received (S505), it is still in a waiting state, and if the HTTP request message is received by the client connection unit 221 (S505), the received HTTP request message is HTTP by the HTTP reverse converter 224 After the header is analyzed, the HTTP header is removed (S510). If it is determined in step S510 of the header analysis that the HTTP request message is in error (S515), after the HTTP error message is generated by the HTTP inverse converter 224 (S520), it is transmitted to the client 200 (S570). If it is determined that the HTTP request message is error free as a result of header analysis in step S510, the HTTP inverse transform unit 224 determines whether the HTTP request message body has been subjected to the Fast Infoset encoding method (S525).

If the HTTP request message body is determined that the Fast Infoset encoding scheme is applied (S525), the HTTP request message body is Fast Infoset decoded by the Fast Infoset decoder 229 (S530). If the HTTP request message body is determined that the Fast Infoset encoding method is not applied (S525), the HTTP request message body is XML decoded by the XML decoder 230 (S535). Here, as an example of a method of determining whether the Fast Infoset encoding scheme is applied, a method of determining whether the encoding scheme is XML or Fast Infoset by reading the Content-Type value for the MIME Type of the HTTP header. Alternatively, if the XML-encoded HTTP message and the Fast Infoset-encoded HTTP message are set to use different HTTP ports, the encoding method may be determined by the port number. In this case, the Content-Type of the HTTP header may be checked. The step can be omitted.

It is determined by the Fast Infoset decoder 229 or the XML decoder 230 whether there is an error in the decrypted CIM operation request message (S540). If there is an error in the CIM operation request message (S540), after the CIM error message is generated (S520), the flow proceeds to step S570. If there is no error in the CIM operation request message (S540), according to the type of the CIM operation request message, by the CIM object management unit 231, from the provider 240 for the storage 250 or each management target 260 The request result value is extracted. Based on the extracted request result value, the CIM object management unit 231 generates a CIM operation response message (S545).

After the step S545, if it is determined whether the body of the HTTP request message is encoded by the Fast Infoset encoding method (S550), the generated CIM operation response message is Fast Infoset encoded by the Fast Infoset encoder 227 (S555), If it is determined that the information is not encoded by the fast infoset encoding method (S550), the generated CIM operation response message is XML encoded by the XML encoding unit 228 (S560).

The encoded CIM operation response message is added to the header by the HTTP conversion unit 223 and provided to the client connection unit 221 as an HTTP response message (S565). The HTTP response message is transmitted by the client connection unit 221 to the client 200 which has requested the information while maintaining the HTTP connection (S570). Through this series of processes, response processing for request message sent from one WBEM client is terminated.

 The invention can also be embodied as computer readable code on a computer readable recording medium. Computer-readable recording media include all kinds of recording devices that store data that can be read by a computer system. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. In addition, functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers in the art to which the present invention belongs.

Such a method and apparatus of the present invention have been described with reference to the embodiments shown in the drawings for clarity, but these are merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the appended claims.

According to the present invention, an efficient message transmission can be carried out by applying the operation request message for the common information model, as well as the XML representation of the WBEM standard, as well as the Fast Infoset representation of the fast decoding and generating a small amount of data. have. In addition, by adopting Fast Infoset technology, an ITU-T standard and an ISO / IEC international standard, it is possible to solve the compatibility problem that may arise.

In addition, the present invention can be advantageously applied to an environment in which the resources of the managed system must be utilized to the minimum, and the system resources can be minimized due to the characteristics of the system management, so that the managed system can be made smaller and lighter, such as a ubiquitous environment. It can be effectively applied to the environment.

Claims (16)

A message that selects an encoding scheme of a request message to a server from an XML encoding scheme or a fast Infoset encoding scheme based on at least one of the data amount of the request message and the traffic state of a network, and encodes the request message using the selected encoding scheme. An encoder; An HTTP conversion unit for converting the encoded message into an HTTP request message according to the HTTP protocol; And And a server connection unit for transmitting the HTTP request message to the server. delete The method of claim 1, The server connection unit receives an HTTP response message corresponding to the request message from the server, An HTTP inverse transform unit which inversely converts the HTTP response message into an encoded response message according to an HTTP protocol; And And a message decoder which decodes the encoded response message by a decoding method corresponding to an encoding method of the request message. A client connection unit for receiving an HTTP request message from a client; An HTTP inverse transform unit which inversely converts the received HTTP request message into an encoded request message according to an HTTP protocol and detects an encoding scheme of the encoded request message; And And a message decoder which decodes the encoded request message by an XML decoding or a fast infoset decoding method corresponding to the detected encoding method. The method of claim 4, wherein the HTTP inverse transform unit, The web-based system management server, characterized in that for detecting the encoding scheme from the Contents Type value corresponding to the MIME Type of the HTTP protocol header. The method of claim 4, wherein the HTTP inverse transform unit, And detecting the encoding scheme by using the port number of the client. The method of claim 4, wherein A CIM object manager generating a response message according to the decrypted request message; A message encoder which encodes the response message according to the detected encoding scheme; And The apparatus further includes an HTTP converter configured to convert the encoded response message into an HTTP response message according to the HTTP protocol. The client connection unit, the web-based system management server, characterized in that for transmitting the HTTP response message to the client. delete delete (a) selecting an encoding scheme of a request message to a server from an XML encoding scheme or a fast Infoset encoding scheme based on at least one of a data amount of the request message and a traffic state of a network, and selecting the request message as the selected encoding scheme. Encoding; (b) converting the encoded message into an HTTP request message according to the HTTP protocol; And and (c) transmitting the HTTP request message to the server. delete The method of claim 10, (d) receiving an HTTP response message corresponding to the request message from the server; (e) inversely converting the HTTP response message into an encoded response message according to the HTTP protocol; And and (f) decoding the encoded response message by a decoding scheme corresponding to the encoding scheme of the request message. (a) receiving an HTTP request message from a client; (b) inversely converting the received HTTP request message into an encoded request message according to an HTTP protocol and detecting an encoding scheme of the encoded request message; And and (c) a message decoder which decodes the encoded request message by an XML decoding or a fast infoset decoding method corresponding to the detected encoding method. The method of claim 13, wherein step (b) comprises: And the encoding method is detected from a contents type value corresponding to the MIME type of the HTTP protocol header. The method of claim 13, wherein step (b) comprises: Response method of the web-based system management server, characterized in that for detecting the encoding scheme using the port number of the client. The method of claim 13, (d) generating a response message according to the decrypted request message; (e) encoding the response message according to the detected encoding scheme; (f) converting the encoded response message into an HTTP response message according to the HTTP protocol; And (g) transmitting the HTTP response message to the client.

Images