SCViewer/plugins/com.minres.scviewer.databas.../src/com/minres/scviewer/database/text/TextDbLoader.java

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/*******************************************************************************
* Copyright (c) 2012 IT Just working.
* Copyright (c) 2020 MINRES Technologies GmbH
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IT Just working - initial API and implementation
*******************************************************************************/
package com.minres.scviewer.database.text;
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import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
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import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
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import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.zip.GZIPInputStream;
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import org.eclipse.collections.impl.map.mutable.UnifiedMap;
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import org.mapdb.DB;
import org.mapdb.DB.TreeMapSink;
import org.mapdb.DBMaker;
import org.mapdb.Serializer;
import com.google.common.collect.HashMultimap;
import com.minres.scviewer.database.AssociationType;
import com.minres.scviewer.database.DataType;
import com.minres.scviewer.database.EventKind;
import com.minres.scviewer.database.IWaveform;
import com.minres.scviewer.database.IWaveformDb;
import com.minres.scviewer.database.IWaveformDbLoader;
import com.minres.scviewer.database.InputFormatException;
import com.minres.scviewer.database.RelationType;
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import com.minres.scviewer.database.RelationTypeFactory;
import com.minres.scviewer.database.tx.ITx;
/**
* The Class TextDbLoader.
*/
public class TextDbLoader implements IWaveformDbLoader {
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/** the file size limit of a zipped txlog where the loader starts to use a file mapped database */
private static final long MEMMAP_LIMIT=256l*1024l*1024l;
private static final long MAPDB_INITIAL_ALLOC = 512l*1024l*1024l;
private static final long MAPDB_INCREMENTAL_ALLOC = 128l*1024l*1024l;
/** The max time. */
private Long maxTime = 0L;
/** The map db. */
DB mapDb = null;
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/** The attr values. */
final List<String> attrValues = new ArrayList<>();
/** The relation types. */
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final Map<String, RelationType> relationTypes = UnifiedMap.newMap();
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/** The tx streams. */
final Map<Long, TxStream> txStreams = UnifiedMap.newMap();
/** The tx generators. */
final Map<Long, TxGenerator> txGenerators = UnifiedMap.newMap();
/** The transactions. */
Map<Long, ScvTx> transactions = null;
Map<Long, Long> id2index = new HashMap<>();
/** The attribute types. */
final Map<String, TxAttributeType> attributeTypes = UnifiedMap.newMap();
/** The relations in. */
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final HashMultimap<Long, ScvRelation> relationsIn = HashMultimap.create();
/** The relations out. */
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final HashMultimap<Long, ScvRelation> relationsOut = HashMultimap.create();
/** The tx cache. */
HashMap<Long, Tx> txCache = new HashMap<>();
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/** The threads. */
List<Thread> threads = new ArrayList<>();
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/** The pcs. */
protected PropertyChangeSupport pcs = new PropertyChangeSupport(this);
/** The Constant x. */
static final byte[] x = "scv_tr_stream".getBytes();
/**
* Gets the max time.
*
* @return the max time
*/
@Override
public Long getMaxTime() {
return maxTime;
}
public ScvTx getScvTx(long id) {
return transactions.get(id2index.get(id));
}
/**
* Gets the all waves.
*
* @return the all waves
*/
@Override
public Collection<IWaveform> getAllWaves() {
return new ArrayList<>(txStreams.values());
}
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/**
* Can load.
*
* @param inputFile the input file
* @return true, if successful
*/
@Override
public boolean canLoad(File inputFile) {
if (!inputFile.isDirectory() && inputFile.exists()) {
boolean gzipped = isGzipped(inputFile);
try(InputStream stream = gzipped ? new GZIPInputStream(new FileInputStream(inputFile)) : new FileInputStream(inputFile)){
byte[] buffer = new byte[x.length];
int readCnt = stream.read(buffer, 0, x.length);
if (readCnt == x.length) {
for (int i = 0; i < x.length; i++)
if (buffer[i] != x[i])
return false;
}
return true;
} catch (Exception e) {
return false;
}
}
return false;
}
/**
* Load.
*
* @param db the db
* @param file the file
* @return true, if successful
* @throws InputFormatException the input format exception
*/
@SuppressWarnings("unchecked")
@Override
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public void load(IWaveformDb db, File file) throws InputFormatException {
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dispose();
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boolean gzipped = isGzipped(file);
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if (file.length() < MEMMAP_LIMIT * (gzipped ? 1 : 10)
|| "memory".equals(System.getProperty("ScvBackingDB", "file")))
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mapDb = DBMaker.memoryDirectDB().make();
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else {
File mapDbFile;
try {
mapDbFile = File.createTempFile("." + file.getName(), ".mapdb", null /* file.parentFile */);
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Files.delete(Paths.get(mapDbFile.getPath()));
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} catch (IOException e) {
throw new InputFormatException(e.toString());
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}
mapDb = DBMaker.fileDB(mapDbFile).fileMmapEnable() // Always enable mmap
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.fileMmapPreclearDisable().allocateStartSize(MAPDB_INITIAL_ALLOC)
.allocateIncrement(MAPDB_INCREMENTAL_ALLOC).cleanerHackEnable().make();
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mapDbFile.deleteOnExit();
}
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TextDbParser parser = new TextDbParser(this);
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try {
parser.txSink = mapDb.treeMap("transactions", Serializer.LONG, Serializer.JAVA).createFromSink();
parser.parseInput(gzipped ? new GZIPInputStream(new FileInputStream(file)) : new FileInputStream(file));
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transactions = parser.txSink.create();
} catch (IllegalArgumentException | ArrayIndexOutOfBoundsException e) {
} catch (Exception e) {
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throw new InputFormatException(e.toString());
}
for (TxStream stream : txStreams.values()) {
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Thread t = new Thread() {
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@Override
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public void run() {
try {
stream.calculateConcurrency();
} catch (Exception e) {
/* don't let exceptions bubble up */ }
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}
};
threads.add(t);
t.start();
}
}
/**
* Dispose.
*/
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@Override
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public void dispose() {
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attrValues.clear();
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relationTypes.clear();
txStreams.clear();
txGenerators.clear();
transactions = null;
attributeTypes.clear();
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relationsIn.clear();
relationsOut.clear();
if (mapDb != null) {
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mapDb.close();
mapDb = null;
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}
}
/**
* Checks if is gzipped.
*
* @param f the f
* @return true, if is gzipped
*/
private static boolean isGzipped(File f) {
try (InputStream is = new FileInputStream(f)) {
byte[] signature = new byte[2];
int nread = is.read(signature); // read the gzip signature
return nread == 2 && signature[0] == (byte) 0x1f && signature[1] == (byte) 0x8b;
} catch (IOException e) {
return false;
}
}
/**
* Gets the all relation types.
*
* @return the all relation types
*/
public Collection<RelationType> getAllRelationTypes() {
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return relationTypes.values();
}
/**
* The Class TextDbParser.
*/
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static class TextDbParser {
/** The Constant scv_tr_stream. */
static final Pattern scv_tr_stream = Pattern
.compile("^scv_tr_stream\\s+\\(ID (\\d+),\\s+name\\s+\"([^\"]+)\",\\s+kind\\s+\"([^\"]+)\"\\)$");
/** The Constant scv_tr_generator. */
static final Pattern scv_tr_generator = Pattern
.compile("^scv_tr_generator\\s+\\(ID\\s+(\\d+),\\s+name\\s+\"([^\"]+)\",\\s+scv_tr_stream\\s+(\\d+),$");
/** The Constant begin_attribute. */
static final Pattern begin_attribute = Pattern
.compile("^begin_attribute \\(ID (\\d+), name \"([^\"]+)\", type \"([^\"]+)\"\\)$");
/** The Constant end_attribute. */
static final Pattern end_attribute = Pattern
.compile("^end_attribute \\(ID (\\d+), name \"([^\"]+)\", type \"([^\"]+)\"\\)$");
/** The loader. */
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final TextDbLoader loader;
/** The transaction by id. */
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HashMap<Long, ScvTx> transactionById = new HashMap<>();
/** The tx sink. */
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TreeMapSink<Long, ScvTx> txSink;
/** The reader. */
BufferedReader reader = null;
/** The generator. */
TxGenerator generator = null;
/** The attr value lut. */
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Map<String, Integer> attrValueLut = new HashMap<>();
long indexCount = 0;
/**
* Instantiates a new text db parser.
*
* @param loader the loader
*/
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public TextDbParser(TextDbLoader loader) {
super();
this.loader = loader;
}
/**
* Parses the input.
*
* @param inputStream the input stream
* @throws IOException Signals that an I/O exception has occurred.
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* @throws InputFormatException Signals that the input format is wrong
*/
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void parseInput(InputStream inputStream) throws IOException, InputFormatException {
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reader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
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String curLine = reader.readLine();
String nextLine = null;
while ((nextLine = reader.readLine()) != null && curLine != null) {
curLine = parseLine(curLine, nextLine);
}
if (curLine != null)
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parseLine(curLine, nextLine);
}
/**
* Gets the attr type.
*
* @param name the name
* @param dataType the data type
* @param type the type
* @return the attr type
*/
private TxAttributeType getAttrType(String name, DataType dataType, AssociationType type) {
String key = name + "-" + dataType.toString();
TxAttributeType res;
if (loader.attributeTypes.containsKey(key)) {
res = loader.attributeTypes.get(key);
} else {
res = new TxAttributeType(name, dataType, type);
loader.attributeTypes.put(key, res);
}
return res;
}
/**
* Parses the line.
*
* @param curLine the cur line
* @param nextLine the next line
* @return the string
* @throws IOException Signals that an I/O exception has occurred.
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* @throws InputFormatException Signals that the input format is wrong
*/
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private String parseLine(String curLine, String nextLine) throws IOException, InputFormatException {
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String[] tokens = curLine.split("\\s+");
if ("tx_record_attribute".equals(tokens[0])) {
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Long id = Long.parseLong(tokens[1]);
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String name = tokens[2].substring(1, tokens[2].length()-1);
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DataType type = DataType.valueOf(tokens[3]);
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String remaining = tokens.length > 5 ? String.join(" ", Arrays.copyOfRange(tokens, 5, tokens.length)) : "";
TxAttributeType attrType = getAttrType(name, type, AssociationType.RECORD);
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transactionById.get(id).attributes.add(new TxAttribute(attrType, getAttrString(attrType, remaining)));
} else if ("tx_begin".equals(tokens[0])) {
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Long id = Long.parseLong(tokens[1]);
Long genId = Long.parseLong(tokens[2]);
TxGenerator gen = loader.txGenerators.get(genId);
ScvTx scvTx = new ScvTx(id, gen.stream.getId(), genId,
Long.parseLong(tokens[3]) * stringToScale(tokens[4]));
loader.maxTime = loader.maxTime > scvTx.beginTime ? loader.maxTime : scvTx.beginTime;
TxStream stream = loader.txStreams.get(gen.stream.getId());
stream.setConcurrency(stream.getConcurrency() + 1);
if (nextLine != null && nextLine.charAt(0) == 'a') {
int idx = 0;
while (nextLine != null && nextLine.charAt(0) == 'a') {
String[] attrTokens = nextLine.split("\\s+");
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TxAttributeType attrType = gen.beginAttrs.get(idx);
TxAttribute attr = new TxAttribute(attrType, getAttrString(attrType, attrTokens[1]));
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scvTx.attributes.add(attr);
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idx++;
nextLine = reader.readLine();
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}
}
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transactionById.put(id, scvTx);
} else if ("tx_end".equals(tokens[0])) {
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Long id = Long.parseLong(tokens[1]);
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ScvTx scvTx = transactionById.get(id);
assert Long.parseLong(tokens[2]) == scvTx.generatorId;
scvTx.endTime = Long.parseLong(tokens[3]) * stringToScale(tokens[4]);
loader.maxTime = loader.maxTime > scvTx.endTime ? loader.maxTime : scvTx.endTime;
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TxGenerator gen = loader.txGenerators.get(scvTx.generatorId);
TxStream stream = loader.txStreams.get(gen.stream.getId());
if (scvTx.beginTime == scvTx.endTime) {
TxEvent evt = new TxEvent(loader, EventKind.SINGLE, id, scvTx.beginTime);
stream.addEvent(evt);
gen.addEvent(evt);
} else {
TxEvent begEvt = new TxEvent(loader, EventKind.BEGIN, id, scvTx.beginTime);
stream.addEvent(begEvt);
gen.addEvent(begEvt);
TxEvent endEvt = new TxEvent(loader, EventKind.END, id, scvTx.endTime);
stream.addEvent(endEvt);
gen.addEvent(endEvt);
}
stream.setConcurrency(stream.getConcurrency() - 1);
if (nextLine != null && nextLine.charAt(0) == 'a') {
int idx = 0;
while (nextLine != null && nextLine.charAt(0) == 'a') {
String[] attrTokens = nextLine.split("\\s+");
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TxAttributeType attrType = gen.endAttrs.get(idx);
TxAttribute attr = new TxAttribute(attrType, getAttrString(attrType, attrTokens[1]));
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scvTx.attributes.add(attr);
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idx++;
nextLine = reader.readLine();
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}
}
txSink.put(indexCount, scvTx);
loader.id2index.put(scvTx.getId(), indexCount++);
transactionById.remove(id);
} else if ("tx_relation".equals(tokens[0])) {
Long tr2 = Long.parseLong(tokens[2]);
Long tr1 = Long.parseLong(tokens[3]);
String relType = tokens[1].substring(1, tokens[1].length() - 1);
if (!loader.relationTypes.containsKey(relType))
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loader.relationTypes.put(relType, RelationTypeFactory.create(relType));
ScvRelation rel = new ScvRelation(loader.relationTypes.get(relType), tr1, tr2);
loader.relationsOut.put(tr1, rel);
loader.relationsIn.put(tr2, rel);
} else if ("scv_tr_stream".equals(tokens[0])) {
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Matcher matcher = scv_tr_stream.matcher(curLine);
if (matcher.matches()) {
Long id = Long.parseLong(matcher.group(1));
TxStream stream = new TxStream(loader, id, matcher.group(2), matcher.group(3));
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add(id, stream);
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}
} else if ("scv_tr_generator".equals(tokens[0])) {
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Matcher matcher = scv_tr_generator.matcher(curLine);
if ((matcher.matches())) {
Long id = Long.parseLong(matcher.group(1));
TxStream stream = loader.txStreams.get(Long.parseLong(matcher.group(3)));
generator = new TxGenerator(loader, id, matcher.group(2), stream);
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add(id, generator);
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}
} else if ("begin_attribute".equals(tokens[0])) {
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Matcher matcher = begin_attribute.matcher(curLine);
if ((matcher.matches())) {
TxAttributeType attrType = getAttrType(matcher.group(2), DataType.valueOf(matcher.group(3)),
AssociationType.BEGIN);
generator.beginAttrs.add(attrType);
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}
} else if ("end_attribute".equals(tokens[0])) {
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Matcher matcher = end_attribute.matcher(curLine);
if ((matcher.matches())) {
TxAttributeType attrType = getAttrType(matcher.group(2), DataType.valueOf(matcher.group(3)),
AssociationType.END);
generator.endAttrs.add(attrType);
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}
} else if (")".equals(tokens[0])) {
generator = null;
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} else
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throw new InputFormatException("Don't know what to do with: '" + curLine + "'");
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return nextLine;
}
/**
* Gets the attr string.
*
* @param attrType the attr type
* @param string the string
* @return the attr string
*/
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private String getAttrString(TxAttributeType attrType, String string) {
String value;
switch (attrType.getDataType()) {
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case STRING:
case ENUMERATION:
value = string.substring(1, string.length() - 1);
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break;
default:
value = string;
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}
if (attrValueLut.containsKey(value)) {
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return loader.attrValues.get(attrValueLut.get(value));
} else {
attrValueLut.put(value, loader.attrValues.size());
loader.attrValues.add(value);
return value;
}
}
/**
* String to scale.
*
* @param scale the scale
* @return the long
*/
private long stringToScale(String scale) {
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String cmp = scale.trim();
if ("fs".equals(cmp))
return 1L;
if ("ps".equals(cmp))
return 1000L;
if ("ns".equals(cmp))
return 1000000L;
if ("us".equals(cmp))
return 1000000000L;
if ("ms".equals(cmp))
return 1000000000000L;
if ("s".equals(cmp))
return 1000000000000000L;
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return 1L;
}
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private void add(Long id, TxStream stream) {
loader.txStreams.put(id, stream);
loader.pcs.firePropertyChange(IWaveformDbLoader.STREAM_ADDED, null, stream);
}
private void add(Long id, TxGenerator generator) {
loader.txGenerators.put(id, generator);
loader.pcs.firePropertyChange(IWaveformDbLoader.GENERATOR_ADDED, null, generator);
}
}
/**
* Gets the transaction.
*
* @param txId the tx id
* @return the transaction
*/
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public ITx getTransaction(long txId) {
if (txCache.containsKey(txId))
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return txCache.get(txId);
Tx tx = new Tx(this, txId);
txCache.put(txId, tx);
return tx;
}
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/**
* Adds the property change listener.
*
* @param l the l
*/
@Override
public void addPropertyChangeListener(PropertyChangeListener l) {
pcs.addPropertyChangeListener(l);
}
/**
* Removes the property change listener.
*
* @param l the l
*/
@Override
public void removePropertyChangeListener(PropertyChangeListener l) {
pcs.removePropertyChangeListener(l);
}
}