Java tutorial
/******************************************************************************* * Copyright (c) 2011 The Board of Trustees of the Leland Stanford Junior University * as Operator of the SLAC National Accelerator Laboratory. * Copyright (c) 2011 Brookhaven National Laboratory. * EPICS archiver appliance is distributed subject to a Software License Agreement found * in file LICENSE that is included with this distribution. *******************************************************************************/ package edu.stanford.slac.archiverappliance.PB.data; import static org.junit.Assert.assertTrue; import static org.junit.Assert.fail; import java.io.File; import java.nio.file.Path; import java.util.Collections; import org.apache.commons.lang3.ArrayUtils; import org.apache.log4j.Logger; import org.epics.archiverappliance.common.BasicContext; import org.epics.archiverappliance.common.PartitionGranularity; import org.epics.archiverappliance.common.TimeUtils; import org.epics.archiverappliance.config.ArchDBRTypes; import org.epics.archiverappliance.config.ConfigService; import org.epics.archiverappliance.config.ConfigServiceForTests; import org.epics.archiverappliance.engine.membuf.ArrayListEventStream; import org.epics.archiverappliance.retrieval.RemotableEventStreamDesc; import org.epics.archiverappliance.utils.nio.ArchPaths; import org.junit.After; import org.junit.Before; import org.junit.Test; import edu.stanford.slac.archiverappliance.PlainPB.PBFileInfo; import edu.stanford.slac.archiverappliance.PlainPB.PlainPBPathNameUtility; import edu.stanford.slac.archiverappliance.PlainPB.PlainPBStoragePlugin; import edu.stanford.slac.archiverappliance.PlainPB.PlainPBStoragePlugin.CompressionMode; import edu.stanford.slac.archiverappliance.PlainPB.utils.ValidatePBFile; import gov.aps.jca.dbr.DBR_TIME_Double; /** * Test storage and retrieval of events whose serialized sizes are large. * @author mshankar * */ public class LargePBLineTest { private ConfigService configService; PlainPBStoragePlugin largeLineTest = new PlainPBStoragePlugin(); PBCommonSetup largeLineSetup = new PBCommonSetup(); private static Logger logger = Logger.getLogger(LargePBLineTest.class.getName()); @Before public void setUp() throws Exception { configService = new ConfigServiceForTests(new File("./bin")); largeLineSetup.setUpRootFolder(largeLineTest, "largeLineTest", PartitionGranularity.PARTITION_HOUR); } @After public void tearDown() throws Exception { largeLineSetup.deleteTestFolder(); } @Test public void testLargeLines() throws Exception { // We create vector doubles with a large number of elements; write it out and then test the read. String pvName = ConfigServiceForTests.ARCH_UNIT_TEST_PVNAME_PREFIX + "LargeLineTest" + largeLineTest.getPartitionGranularity(); ArchDBRTypes type = ArchDBRTypes.DBR_WAVEFORM_DOUBLE; short year = TimeUtils.getCurrentYear(); for (int i = 1; i < 7200; i++) { try (BasicContext context = new BasicContext()) { ArrayListEventStream strm = new ArrayListEventStream(1024, new RemotableEventStreamDesc(type, pvName, year)); DBR_TIME_Double retvd = new DBR_TIME_Double(ArrayUtils .toPrimitive(Collections.nCopies(i, Math.sin(i * Math.PI / 3600)).toArray(new Double[0]))); retvd.setTimeStamp(new gov.aps.jca.dbr.TimeStamp(TimeUtils.getStartOfCurrentYearInSeconds() + i)); retvd.setSeverity(1); retvd.setStatus(0); strm.add(new PBVectorDouble(retvd)); largeLineTest.appendData(context, pvName, strm); } catch (Exception ex) { logger.error("Exception appending data " + i, ex); fail(ex.getMessage()); } } Path[] allPaths = PlainPBPathNameUtility.getAllPathsForPV(new ArchPaths(), largeLineTest.getRootFolder(), pvName, ".pb", largeLineTest.getPartitionGranularity(), CompressionMode.NONE, configService.getPVNameToKeyConverter()); assertTrue("testLargeLines returns null for getAllFilesForPV for " + pvName, allPaths != null); assertTrue("testLargeLines returns empty array for getAllFilesForPV for " + pvName, allPaths.length > 0); for (Path destPath : allPaths) { try { PBFileInfo info = new PBFileInfo(destPath); info.getLastEventEpochSeconds(); assertTrue("File validation failed for " + destPath.toAbsolutePath().toString(), ValidatePBFile.validatePBFile(destPath, false)); } catch (Exception ex) { logger.error("Exception parsing file" + destPath.toAbsolutePath().toString(), ex); fail(ex.getMessage()); } } } }