Package org.rrd4j.core.jrrd

This package provides read-only access to natives RRD file.

Currently this can read RRD files that were generated big or little endian machines, 32 or 64 bits word, and 4 or 8 bytes alignment. So it's know to work on a least

• x86 Linux
• x86_64 Linux
• x86_64 Solaris
• sparc v8 (32 bits) Solaris
• sparc v9 (64 bits) Solaris

But it should work on other environments too.

Typical usage:

 RRDatabase db = new RRDatabase("native.rrd");
 RrdGraphDef() gd = RrdGraphDef();
 Calendar endCal = Calendar.getInstance();
 endCal.set(Calendar.MILLISECOND, 0);
 Calendar startCal = (Calendar) endCal.clone();
 startCal.add(Calendar.DATE, -1);
 DataChunk chunk = db.getData(ConsolidationFunctionType.AVERAGE, startCal.getTime(), endCal.getTime(), 1L);
 for(String name: db.getDataSourcesName()) {
     gd.datasource(name, chunk.toPlottable(name));
 }