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package testing;
import simulator.VSLogging;
import simulator.VSSimulatorVisualization;
import core.VSInternalProcess;
import java.util.*;
import java.lang.reflect.Field;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArrayList;
/**
* Custom logging implementation that captures all log messages during
* headless simulation execution for later verification.
*/
public class LogCapture extends VSLogging {
private final List<LogEntry> capturedLogs;
private final Map<Integer, List<LogEntry>> processLogs;
private final List<LogListener> listeners;
private boolean printLogs = false;
private String logPrefix = "[LOG] ";
public LogCapture() {
super();
this.capturedLogs = new CopyOnWriteArrayList<>();
this.processLogs = new ConcurrentHashMap<>();
this.listeners = new CopyOnWriteArrayList<>();
}
public void setPrintLogs(boolean printLogs) {
this.printLogs = printLogs;
}
public void setSimulatorCanvas(VSSimulatorVisualization viz) {
// Store reference for process count
try {
Field field = VSLogging.class.getDeclaredField("simulatorVisualization");
field.setAccessible(true);
field.set(this, viz);
} catch (Exception e) {
// Ignore
}
}
public void setLogPrefix(String prefix) {
this.logPrefix = prefix;
}
@Override
public synchronized void log(String message) {
// Call parent to maintain compatibility
super.log(message);
long time = 0;
if (getSimulatorVisualization() != null) {
time = getSimulatorVisualization().getTime();
}
LogEntry entry = new LogEntry(time, message, LogType.GLOBAL, -1);
capturedLogs.add(entry);
notifyListeners(entry);
if (printLogs) {
System.out.println(logPrefix + entry);
}
}
@Override
public synchronized void log(String message, long time) {
super.log(message, time);
LogEntry entry = new LogEntry(time, message, LogType.GLOBAL, -1);
capturedLogs.add(entry);
notifyListeners(entry);
if (printLogs) {
System.out.println(String.format("[%5d] %s", time, message));
}
}
/**
* Log a message from a specific process.
* Note: This method is called by protocols and events.
*/
public synchronized void log(VSInternalProcess process, String message) {
// Create formatted message for parent
String formattedMessage = "Process " + process.getProcessNum() +
": " + message;
super.log(formattedMessage, process.getTime());
LogEntry entry = new LogEntry(
process.getTime(),
message,
LogType.PROCESS,
process.getProcessNum()
);
capturedLogs.add(entry);
processLogs.computeIfAbsent(process.getProcessNum(),
k -> new CopyOnWriteArrayList<>())
.add(entry);
notifyListeners(entry);
if (printLogs) {
System.out.println(String.format("[%5d] Process %d: %s",
process.getTime(), process.getProcessNum(), message));
}
}
private void notifyListeners(LogEntry entry) {
for (LogListener listener : listeners) {
try {
listener.onLogEntry(entry);
} catch (Exception e) {
System.err.println("Error notifying log listener: " + e.getMessage());
}
}
}
/**
* Get the simulator visualization reference.
*/
private VSSimulatorVisualization getSimulatorVisualization() {
try {
Field field = VSLogging.class.getDeclaredField("simulatorVisualization");
field.setAccessible(true);
return (VSSimulatorVisualization) field.get(this);
} catch (Exception e) {
return null;
}
}
public List<LogEntry> getCapturedLogs() {
return new ArrayList<>(capturedLogs);
}
public Map<Integer, List<LogEntry>> getProcessLogs() {
Map<Integer, List<LogEntry>> result = new HashMap<>();
for (Map.Entry<Integer, List<LogEntry>> entry : processLogs.entrySet()) {
result.put(entry.getKey(), new ArrayList<>(entry.getValue()));
}
return result;
}
public int getTotalLogCount() {
return capturedLogs.size();
}
public Map<Integer, Integer> getProcessMessageCounts() {
Map<Integer, Integer> counts = new HashMap<>();
// Initialize counts for all processes
VSSimulatorVisualization viz = getSimulatorVisualization();
if (viz != null) {
for (int i = 0; i < viz.getNumProcesses(); i++) {
counts.put(i, 0);
}
}
// Count messages from all captured logs
for (LogEntry log : capturedLogs) {
if (log.getMessage().contains("Message sent")) {
int processNum = log.getProcessNum();
counts.put(processNum, counts.getOrDefault(processNum, 0) + 1);
}
}
return counts;
}
public void addListener(LogListener listener) {
listeners.add(listener);
}
public void removeListener(LogListener listener) {
listeners.remove(listener);
}
@Override
public synchronized void clear() {
super.clear();
capturedLogs.clear();
processLogs.clear();
}
}
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