KR100621746B1 - Method of monitoring status of service control system - Google Patents

Abstract

The present invention relates to a method for monitoring a state of a service control system in which a plurality of different connection types are bundled together and managed by only one time-consuming operation using an input / output multiplexing system call. The open / close operation is performed only once, thus using resources more efficiently than the conventional method, and at the same time, the blocking effect can be minimized because it can wait for a response to several requests.

Description

Method of monitoring status of service control system

1 is a view illustrating a state monitoring method for a conventional service control system;

2 is a configuration diagram in which the present invention is employed,

3 is a schematic flowchart of a state monitoring method of a service control system according to an embodiment of the present invention;

4 is a detailed flow chart for the "A" part of FIG.

FIG. 5 is a detailed flowchart of part “b” of FIG. 3.

<Description of Symbols for Major Parts of Drawings>

10: state monitoring processor

12, 14, 16: monitoring target

The present invention relates to a method for monitoring a state of a service control system, and more particularly, to a method for monitoring a failure occurring in a system for providing a service.

Conventionally, as a method of periodically detecting a state of a system providing a service, a flowchart as shown in FIG. 1 is employed.

That is, the conventional state monitoring method periodically sends a state monitoring request. The special feature of this monitoring method is that the design is simple and easy to implement. Instead, the monitoring method cannot wait for another connection when waiting for each reply. Therefore, when a request sent for a specific connection is not properly monitored due to a connection error, the other connection can be monitored only after the error processing for the specific connection is completed. This is a serious problem for the status monitoring program because it can delay the status monitoring itself even when there is no problem with the monitoring target itself. It is also inefficient because there are many unnecessary open and close connections because it opens a new connection every time.

In other words, the conventional state monitoring system has the following problems. The first is the inefficiency of periodically monitoring the four stages of the request: connection open, send request, wait reply, and close. This is a problem by performing a relatively time-consuming connection open / close every cycle. In particular, considering that there are at least three types of connections (MPT level 3, SCCP, MIB), this is a significant performance degradation.

The second problem is that when you open a connection and read its state, you don't monitor the state of the other. As described above, since the three connection types are different from each other, they can be opened at the same time and stand by at the same time. However, since only one type of connection is opened and used at a time, the overall waiting time becomes long and inefficient. In particular, in the conventional method, if one of the three connections is faulty and the blocking time becomes long, other connections irrelevant to it may be adversely affected, resulting in inaccurate resources and inaccurate state monitoring.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and is a state of a service control system that performs a relatively time-consuming operation only once using an input / output multiplexing system call to bundle and manage several different connection types into one. Its purpose is to provide a monitoring method.

In the method for monitoring a state of a service control system according to a preferred embodiment of the present invention, in the method for monitoring the state of a service control system, all connections of the monitoring targets are opened and responses to all the connections using an input / output multiplexing system call function. Waiting for the process; Selecting a response to a pre-request among all responses to the connection, and performing a process corresponding to the selected response or sending a new request.

delete

In addition, the state monitoring method of the service control system according to another embodiment of the present invention, the process of opening all connections of the monitoring targets;

Waiting for a response to all the connections using an input / output multiplexing system call;

Selecting a response to a previously sent request using a result of the input / output multiplexing system call;

Performing a process corresponding to the selected response and changing the state of each connection; And

Generating a request according to the changed state and returning to the first process.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a configuration diagram in which the present invention is employed, and the state monitoring processor 10 obtains state information from various monitoring objects 12, 14, and 16. Each of the monitoring targets 12, 14, and 16 provides a management interface. The interface it provides is usually a socket connection on a UNIX system, sending and receiving requests that provide status information for each connection. Since the request processing of each of the monitored objects 12, 14 and 16 is variable, it usually sends one request and waits for the result.

Next, a state monitoring method of the service control system according to an exemplary embodiment of the present invention will be described with reference to the flowchart of FIG. 3.

The present invention is basically that a connection opened once is continuously used without closing, and multiple connections are open at the same time.

First, open all the necessary connections at once. Then use select (), an I / O multiplexing system call provided by Unix, to wait for all the responses at once. Then select the result of the select that corresponds to the response of the request. It then either waits ("a") or sends a new request ("b") depending on the state of each connection.

In the above description of FIG. 3, a difference from the conventional method is described. First, since the state of each connection cannot be distinguished from the position on the program, the state has a global variable. And this state must always be changed when sending a request or receiving a response. Each connection has three states: "ready", "waiting", and "idle". The ready state is a state in which a request may be sent, the waiting state is a state of sending a request and waiting for a response, and the idle state is a state of rest until the next request is sent.

FIG. 4 is a detailed flow diagram of the “A” portion of FIG. 3, which changes state after receiving a response. That is, it checks which request is the result of the select and processes the response.

The selection has a function of determining which file descriptor has input. Therefore, it can be used to know what kind of request the response is. After that, the state is changed to "children".

FIG. 5 is a detailed flowchart of the “I” portion of FIG. 3, which is different depending on the state since no more programs are sequentially executed as described above. Since each connection has the same structure as in FIG. 4, one will be described.

First of all, if the status is "ready", the status is determined to send the request and the request is sent. After that, the duplicate request should not be sent, so it changes to the "waiting" state, which is waiting for a response.

Since the "waiting" state is a state waiting for a response, no operation is performed. That is, no new request is sent for this connection until the state changes to the "children" state.

The response is processed as described in FIG. 4 and when the processing is completed, the state changes to the "idle" state. In the "children" state, nothing happens until the next cycle to send a request. However, if a tieout occurs and a new request needs to be sent, the "children" state is changed to "ready" state.

According to the present invention as described above, since the connection open / close, which is a time-consuming operation, is performed only once, it uses resources more efficiently than the conventional method, and at the same time waits for a response to several requests. Minimize the blocking effect.

In addition, preferred embodiments of the present invention are disclosed for the purpose of illustration, those skilled in the art will be able to various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the following claims You will have to look.

Claims (10)

In the method for monitoring the status of the service control system, Opening all connections of the monitored objects and waiting for a response to all the connections using an input / output multiplexing system call function; Selecting a response to a pre-request among the responses to all the connections, and performing a process corresponding to the selected response or sending a new request. Opening all connections of the monitored objects; Waiting for a response to all the connections using an input / output multiplexing system call; Selecting a response to a previously sent request using a result of the input / output multiplexing system call; Performing a process corresponding to the selected response and changing the state of each connection; And And generating a request according to the changed state and returning to the first process. The method of claim 2, And status information on each connection is maintained through a global variable. The method of claim 2, When the request is sent or when receiving a response, the state monitoring method of the service control system, characterized in that to change the state of the connection to the corresponding state. The method of claim 2, Wherein each connection has a " ready " state that may send a request, a " waiting " state that sends a request and waits for a response, and a " children " . The method of claim 5, wherein And performing a response corresponding to the selected response, checking which request is the result of the I / O multiplexing system call, and processing the response. The method of claim 6, And after the process corresponding to the selected response is performed, changes the state of the connection to an "idle" state. The method of claim 7, wherein After changing to the " children " state, the " idle " state is changed to " ready " state when a timeout occurs and a new request needs to be sent, without doing anything until the next request cycle. The state monitoring method of the service control system. The method of claim 2, And when the changed state of each connection is in the " ready " state, changes to the "waiting" state after transmitting a request. The method of claim 2, If the changed state of each connection is in the "waiting" state, a new request for the connection is not sent until the state is changed to the "idle" state.

Images