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/*
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* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package jdk.jfr.internal.tool;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.nio.file.Path;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.function.Predicate;
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import jdk.jfr.EventType;
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import jdk.jfr.Timespan;
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import jdk.jfr.Timestamp;
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import jdk.jfr.ValueDescriptor;
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import jdk.jfr.consumer.RecordedEvent;
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import jdk.jfr.consumer.RecordedObject;
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import jdk.jfr.consumer.RecordingFile;
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import jdk.jfr.internal.consumer.JdkJfrConsumer;
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abstract class EventPrintWriter extends StructuredWriter {
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enum ValueType {
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TIMESPAN, TIMESTAMP, OTHER
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}
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protected static final String STACK_TRACE_FIELD = "stackTrace";
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protected static final String EVENT_THREAD_FIELD = "eventThread";
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private static final JdkJfrConsumer PRIVATE_ACCESS = JdkJfrConsumer.instance();
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private Predicate<EventType> eventFilter = x -> true;
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private int stackDepth;
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// cach that will speed up annotation lookup
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private Map<ValueDescriptor, ValueType> typeOfValues = new HashMap<>();
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EventPrintWriter(PrintWriter p) {
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super(p);
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}
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abstract protected void print(List<RecordedEvent> events);
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void print(Path source) throws FileNotFoundException, IOException {
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List<RecordedEvent> events = new ArrayList<>(500_000);
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printBegin();
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try (RecordingFile file = new RecordingFile(source)) {
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while (file.hasMoreEvents()) {
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RecordedEvent event = file.readEvent();
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if (acceptEvent(event)) {
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events.add(event);
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}
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if (PRIVATE_ACCESS.isLastEventInChunk(file)) {
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Collections.sort(events, PRIVATE_ACCESS.eventComparator());
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print(events);
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events.clear();
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}
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}
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}
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printEnd();
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flush(true);
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}
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protected void printEnd() {
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}
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protected void printBegin() {
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}
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public final void setEventFilter(Predicate<EventType> eventFilter) {
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this.eventFilter = eventFilter;
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}
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protected final boolean acceptEvent(RecordedEvent event) {
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return eventFilter.test(event.getEventType());
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}
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protected final int getStackDepth() {
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return stackDepth;
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}
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protected final boolean isLateField(String name) {
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return name.equals(EVENT_THREAD_FIELD) || name.equals(STACK_TRACE_FIELD);
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}
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public void setStackDepth(int stackDepth) {
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this.stackDepth = stackDepth;
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}
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protected Object getValue(RecordedObject object, ValueDescriptor v) {
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ValueType valueType = typeOfValues.get(v);
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if (valueType == null) {
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valueType = determineValueType(v);
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typeOfValues.put(v, valueType);
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}
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switch (valueType) {
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case TIMESPAN:
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return object.getDuration(v.getName());
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case TIMESTAMP:
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return PRIVATE_ACCESS.getOffsetDataTime(object, v.getName());
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default:
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return object.getValue(v.getName());
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}
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}
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// It's expensive t check
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private ValueType determineValueType(ValueDescriptor v) {
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if (v.getAnnotation(Timespan.class) != null) {
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return ValueType.TIMESPAN;
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}
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if (v.getAnnotation(Timestamp.class) != null) {
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return ValueType.TIMESTAMP;
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}
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return ValueType.OTHER;
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}
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}
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