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package de.cowtipper.cowlection.search;
import com.mojang.realmsclient.util.Pair;
import de.cowtipper.cowlection.config.MooConfig;
import de.cowtipper.cowlection.data.LogEntry;
import net.minecraft.util.EnumChatFormatting;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.tuple.ImmutableTriple;
import java.io.*;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.time.*;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import java.util.zip.GZIPInputStream;
class LogFilesSearcher {
private static final Pattern LOG_FILE_PATTERN = Pattern.compile("^(\\d{4})-(\\d{2})-(\\d{2})-\\d+\\.log\\.gz$");
/**
* Log4j.xml PatternLayout: [%d{HH:mm:ss}] [%t/%level]: %msg%n
* Log line: [TIME] [THREAD/LEVEL]: [CHAT] msg
* examples:
* - [13:33:37] [Client thread/INFO]: [CHAT] Hello World
* - [08:15:42] [Client thread/ERROR]: Item entity 9001 has no item?!
*/
private static final Pattern LOG4J_PATTERN = Pattern.compile("^\\[(?<timeHours>[\\d]{2}):(?<timeMinutes>[\\d]{2}):(?<timeSeconds>[\\d]{2})] \\[(?<thread>[^/]+)/(?<logLevel>[A-Z]+)]:(?<isChat> \\[CHAT])? (?<message>.*)$");
private int analyzedFilesWithHits = 0;
ImmutableTriple<Integer, Integer, List<LogEntry>> searchFor(String searchQuery, boolean chatOnly, boolean matchCase, boolean removeFormatting, LocalDate dateStart, LocalDate dateEnd) throws IOException {
List<Pair<Path, LocalDate>> files = new ArrayList<>();
for (String logsDirPath : MooConfig.logsDirs) {
File logsDir = new File(logsDirPath);
if (logsDir.exists() && logsDir.isDirectory()) {
try {
files.addAll(fileList(logsDir, dateStart, dateEnd));
} catch (IOException e) {
throw new IOException(EnumChatFormatting.DARK_RED + "ERROR: An error occurred trying to read/parse '" + EnumChatFormatting.RED + logsDirPath + EnumChatFormatting.DARK_RED + "':\n"
+ EnumChatFormatting.GOLD + e.getLocalizedMessage(), e);
}
}
}
if (files.isEmpty()) {
throw new FileNotFoundException(EnumChatFormatting.DARK_RED + "ERROR: No Minecraft log files could be found for the selected date range. Please check if the dates as well as the directories of the log files are set correctly (Log Search ➡ Settings).");
} else {
List<LogEntry> searchResults = analyzeFiles(files, searchQuery, chatOnly, matchCase, removeFormatting)
.stream().sorted(Comparator.comparing(LogEntry::getTime)).collect(Collectors.toList());
return new ImmutableTriple<>(files.size(), analyzedFilesWithHits, searchResults);
}
}
private List<LogEntry> analyzeFiles(List<Pair<Path, LocalDate>> pathsData, String searchTerm, boolean chatOnly, boolean matchCase, boolean removeFormatting) {
List<LogEntry> searchResults = new ArrayList<>();
for (Pair<Path, LocalDate> pathData : pathsData) {
Path path = pathData.first();
boolean foundSearchTermInFile = false;
try (BufferedReader in = (path.endsWith("latest.log")
? new BufferedReader(new InputStreamReader(new FileInputStream(path.toFile()))) // latest.log
: new BufferedReader(new InputStreamReader(new GZIPInputStream(new FileInputStream(path.toFile())))))) { // ....log.gz
LocalDate date = pathData.second();
String content;
LogEntry logEntry = null;
while ((content = in.readLine()) != null) {
Matcher logLineMatcher = LOG4J_PATTERN.matcher(content);
if (logLineMatcher.matches()) { // current line is a new log entry
if (logEntry != null) {
// we had a previous log entry; analyze it!
LogEntry result = analyzeLogEntry(logEntry, searchTerm, matchCase, removeFormatting);
if (result != null) {
searchResults.add(result);
foundSearchTermInFile = true;
}
logEntry = null;
}
// handle first line of new log entry
if (chatOnly && logLineMatcher.group("isChat") == null) {
// not a chat log entry, although we're only searching for chat messages, abort!
continue;
}
LocalDateTime dateTime = getDate(date, logLineMatcher);
logEntry = new LogEntry(dateTime, path, logLineMatcher.group("message"));
} else if (logEntry != null) {
// multiline log entry
logEntry.addLogLine(content);
}
}
if (logEntry != null) {
// end of file! analyze last log entry in file
LogEntry result = analyzeLogEntry(logEntry, searchTerm, matchCase, removeFormatting);
if (result != null) {
searchResults.add(result);
foundSearchTermInFile = true;
}
}
if (foundSearchTermInFile) {
analyzedFilesWithHits++;
}
} catch (IOException ignored) {
// most likely corrupted .log.gz file - skip it.
}
}
return searchResults;
}
private LocalDateTime getDate(LocalDate date, Matcher logLineMatcher) {
int hour = Integer.parseInt(logLineMatcher.group(1));
int minute = Integer.parseInt(logLineMatcher.group(2));
int sec = Integer.parseInt(logLineMatcher.group(3));
return LocalDateTime.of(date, LocalTime.of(hour, minute, sec));
}
private LogEntry analyzeLogEntry(LogEntry logEntry, String searchTerms, boolean matchCase, boolean removeFormatting) {
if (logEntry.getMessage().length() > 5000) {
// avoid ultra long log entries
return null;
}
logEntry.fixWeirdCharacters();
if (removeFormatting) {
logEntry.removeFormatting();
}
String logMessage = logEntry.getMessage();
if (!matchCase) {
if (!StringUtils.containsIgnoreCase(logMessage, searchTerms)) {
// no result, abort
return null;
}
} else if (!logMessage.contains(searchTerms)) {
// no result, abort
return null;
}
return logEntry;
}
private List<Pair<Path, LocalDate>> fileList(File directory, LocalDate startDate, LocalDate endDate) throws IOException {
List<Pair<Path, LocalDate>> fileNames = new ArrayList<>();
try (DirectoryStream<Path> directoryStream = Files.newDirectoryStream(directory.toPath())) {
for (Path path : directoryStream) {
if (path.toString().endsWith(".log.gz")) {
Matcher fileNameMatcher = LOG_FILE_PATTERN.matcher(path.getFileName().toString());
if (fileNameMatcher.matches()) {
LocalDate fileLocalDate = LocalDate.of(Integer.parseInt(fileNameMatcher.group(1)),
Integer.parseInt(fileNameMatcher.group(2)), Integer.parseInt(fileNameMatcher.group(3)));
if (!fileLocalDate.isBefore(startDate) && !fileLocalDate.isAfter(endDate)) {
fileNames.add(Pair.of(path, fileLocalDate));
}
}
} else if (path.getFileName().toString().equals("latest.log")) {
LocalDate lastModified = Instant.ofEpochMilli(path.toFile().lastModified()).atZone(ZoneId.systemDefault()).toLocalDate();
if (!lastModified.isBefore(startDate) && !lastModified.isAfter(endDate)) {
fileNames.add(Pair.of(path, lastModified));
}
}
}
}
return fileNames;
}
}
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