| /******************************************************************************* |
| * Copyright (c) 2018 Ericsson |
| * |
| * All rights reserved. This program and the accompanying materials are made |
| * available under the terms of the Eclipse Public License 2.0 which |
| * accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| *******************************************************************************/ |
| |
| package org.eclipse.tracecompass.jsontrace.core.tests.stub; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.RandomAccessFile; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.core.runtime.jobs.Job; |
| import org.eclipse.tracecompass.internal.provisional.jsontrace.core.trace.JsonTrace; |
| import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; |
| import org.eclipse.tracecompass.tmf.core.event.TmfEvent; |
| import org.eclipse.tracecompass.tmf.core.event.TmfEventType; |
| import org.eclipse.tracecompass.tmf.core.exceptions.TmfTraceException; |
| import org.eclipse.tracecompass.tmf.core.io.BufferedRandomAccessFile; |
| import org.eclipse.tracecompass.tmf.core.timestamp.TmfTimestamp; |
| import org.eclipse.tracecompass.tmf.core.trace.ITmfContext; |
| import org.eclipse.tracecompass.tmf.core.trace.TmfTraceManager; |
| import org.eclipse.tracecompass.tmf.core.trace.TraceValidationStatus; |
| import org.eclipse.tracecompass.tmf.core.trace.location.ITmfLocation; |
| import org.eclipse.tracecompass.tmf.core.trace.location.TmfLongLocation; |
| |
| import com.google.gson.Gson; |
| import com.google.gson.JsonElement; |
| import com.google.gson.JsonObject; |
| |
| /** |
| * Json stub trace to test {@link JsonTrace} |
| * |
| * @author Simon Delisle |
| */ |
| public class JsonStubTrace extends JsonTrace { |
| |
| private static final String TIMESTAMP_KEY = "timestamp"; //$NON-NLS-1$ |
| private Gson GSON = new Gson(); |
| |
| @Override |
| public void initTrace(IResource resource, String path, Class<? extends ITmfEvent> type) throws TmfTraceException { |
| super.initTrace(resource, path, type); |
| fProperties.put("Type", "JSON-Stub"); //$NON-NLS-1$ //$NON-NLS-2$ |
| String dir = TmfTraceManager.getSupplementaryFileDir(this); |
| fFile = new File(dir + new File(path).getName()); |
| if (!fFile.exists()) { |
| Job sortJob = new JsonStubTraceSortingJob(this, path); |
| sortJob.schedule(); |
| while (sortJob.getResult() == null) { |
| try { |
| sortJob.join(); |
| } catch (InterruptedException e) { |
| throw new TmfTraceException(e.getMessage(), e); |
| } |
| } |
| IStatus result = sortJob.getResult(); |
| if (!result.isOK()) { |
| throw new TmfTraceException("Job failed " + result.getMessage()); //$NON-NLS-1$ |
| } |
| } |
| try { |
| fFileInput = new BufferedRandomAccessFile(fFile, "r"); //$NON-NLS-1$ |
| goToCorrectStart(fFileInput); |
| } catch (IOException e) { |
| throw new TmfTraceException(e.getMessage(), e); |
| } |
| } |
| |
| @Override |
| public IStatus validate(IProject project, String path) { |
| // Slow, but meh, it's a unit test and this is more readable. |
| if (path.matches("traces/.*sortedTrace.json")) { //$NON-NLS-1$ |
| return new TraceValidationStatus(MAX_CONFIDENCE, "json.trace.stub"); //$NON-NLS-1$ |
| } |
| return Status.CANCEL_STATUS; |
| } |
| |
| @Override |
| public ITmfEvent parseEvent(ITmfContext context) { |
| ITmfLocation location = context.getLocation(); |
| if (location instanceof TmfLongLocation) { |
| TmfLongLocation tmfLongLocation = (TmfLongLocation) location; |
| Long locationInfo = tmfLongLocation.getLocationInfo(); |
| if (location.equals(NULL_LOCATION)) { |
| locationInfo = 0L; |
| } |
| try { |
| if (!locationInfo.equals(fFileInput.getFilePointer())) { |
| fFileInput.seek(locationInfo); |
| } |
| String nextJson = readNextEventString(() -> fFileInput.read()); |
| while (nextJson != null) { |
| if (nextJson != null) { |
| JsonObject object = GSON.fromJson(nextJson, JsonObject.class); |
| // Ignore events with no timestamp, they are there just to make sure the traces |
| // parses in those cases |
| JsonElement tsElement = object.get(TIMESTAMP_KEY); |
| if (tsElement != null) { |
| long timestamp = tsElement.getAsLong(); |
| return new TmfEvent(this, context.getRank(), TmfTimestamp.fromNanos(timestamp), |
| new TmfEventType("JsonStubEvent", null), null); //$NON-NLS-1$ |
| } |
| nextJson = readNextEventString(() -> fFileInput.read()); |
| } |
| } |
| } catch (IOException e) { |
| // Nothing to do |
| } |
| } |
| return null; |
| } |
| |
| private static void goToCorrectStart(RandomAccessFile rafile) throws IOException { |
| // skip start (ex.: {"events":) |
| StringBuilder sb = new StringBuilder(); |
| int val = rafile.read(); |
| /* |
| * Skip list contains all the odd control characters |
| */ |
| Set<Integer> skipList = new HashSet<>(); |
| skipList.add((int) ':'); |
| skipList.add((int) '\t'); |
| skipList.add((int) '\n'); |
| skipList.add((int) '\r'); |
| skipList.add((int) ' '); |
| skipList.add((int) '\b'); |
| skipList.add((int) '\f'); |
| while (val != -1 && val != ':' && sb.length() < 9) { |
| if (!skipList.contains(val)) { |
| sb.append((char) val); |
| } |
| val = rafile.read(); |
| } |
| |
| if (sb.toString().startsWith('{' + "\"events\"") && rafile.length() > 9) { //$NON-NLS-1$ |
| rafile.seek(9); |
| } else { |
| rafile.seek(0); |
| } |
| } |
| } |