There are multiple ways of retrieving SysInfo data using the API. The next section of code determines which retrieval method should be used for demonstration purposes:
String method = args[0];
if (method.equalsIgnoreCase("LocalMethod1")) {
/*
* Retrieve the SysInfo data specified by classes.
*/
sysInfo = getLocalMethod1(sysInfoDir, classes);
} else if (method.equalsIgnoreCase("LocalMethod2")) {
/*
* Retrieve the SysInfo data specified by classes.
* This does the same thing as LocalMethod1.
*/
sysInfo = getLocalMethod2(sysInfoDir, classes);
} else if (method.equalsIgnoreCase("RemoteMethod1")) {
/*
* Retrieve the SysInfo data specified by classes
* from host remoteHostName.
*/
sysInfo = getRemoteMethod1(remoteHostName, classes);
}
The getLocalMethod1 method retrieves data
using the most simple API calls from the local system by running the
SysInfo Command Line Interface (CLI).
The core code is:
SysInfoCore2 sysInfo = null; SysInfo si = new SysInfo(sysInfoDir); // Specify what SysInfo data classes we should retrieve si.setDataClasses(classes); // Get the SysInfo object with data populated sysInfo = si.get(); return sysInfo;
The call to new SysInfo(sysInfoDir)
creates a new SysInfo object and tells it to look in the directory
specified by
sysInfoDir
for the SysInfo CLI.
The call to si.setDataClasses(classes)
specifies the list of SysInfo data classes to retrieve.
The call to si.get() does the actual retrieval
of data.
The getLocalMethod2 method retrieves data
from the local system by running the
SysInfo Command Line Interface (CLI).
It does the same thing as getLocalMethod1 but
shows how to specify options to the CLI.
The core code is:
SysInfoCore2 sysInfo = null;
List<String> siArgs = new ArrayList<String>();
siArgs.add("--class");
// Tell SysInfo what data classes to populate
siArgs.add(classes);
// Create SysInfo object
SysInfo si = new SysInfo(sysInfoDir, siArgs);
// OPTIONAL: Enable debugging
//si.setDebug(true);
// Get the SysInfo object with data populated
sysInfo = si.get();
return sysInfo;
Any valid SysInfo CLI option can be specified by additional
siArgs.add(...) calls.
It may be useful to sometimes enable debugging in the SysInfo Java API layer. To do this, you can use the following method:
si.setDebug(true);
The getRemoteMethod1 method retrieves data
from a remote system running the SysInfo Agent version 10 or later.
The core code is:
SysInfoCore2 sysInfo = null; SysInfo si = new SysInfo(null, hostName); // Specify what SysInfo data classes we should retrieve si.setDataClasses(classes); // Get the SysInfo object with data populated sysInfo = si.get(); return sysInfo;
The call to SysInfo(null, hostName)
is what tells the SysInfo API to retrieve the information from
a host called hostName.