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[wpiutil] Add DataLog and DataLogManager Stop() (#5860)

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Restarting a stopped log results in creating a new log file with fresh copies of the same start records and schema data records.

Also check to see if the file has been deleted or if the log file exceeds 1.8 GB, and start a new one.
This commit is contained in:
Peter Johnson
2023-11-03 20:34:43 -07:00
committed by GitHub
parent 2a04e12c6f
commit f1a82828fe
11 changed files with 398 additions and 135 deletions
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69
wpilibj/src/main/java/edu/wpi/first/wpilibj/DataLogManager.java
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@@ -41,9 +41,10 @@ import java.util.Random;
*/
public final class DataLogManager {
private static DataLog m_log;
private static boolean m_stopped;
private static String m_logDir;
private static boolean m_filenameOverride;
private static final Thread m_thread;
private static Thread m_thread;
private static final ZoneId m_utc = ZoneId.of("UTC");
private static final DateTimeFormatter m_timeFormatter =
DateTimeFormatter.ofPattern("yyyyMMdd_HHmmss").withZone(m_utc);
@@ -59,11 +60,6 @@ public final class DataLogManager {
private DataLogManager() {}
static {
m_thread = new Thread(DataLogManager::logMain, "DataLogDS");
m_thread.setDaemon(true);
}
/** Start data log manager with default directory location. */
public static synchronized void start() {
start("", "", 0.25);
@@ -100,33 +96,52 @@ public final class DataLogManager {
* tradeoff
*/
public static synchronized void start(String dir, String filename, double period) {
if (m_log != null) {
return;
}
m_logDir = makeLogDir(dir);
m_filenameOverride = !filename.isEmpty();
if (m_log == null) {
m_logDir = makeLogDir(dir);
m_filenameOverride = !filename.isEmpty();
// Delete all previously existing FRC_TBD_*.wpilog files. These only exist when the robot
// never connects to the DS, so they are very unlikely to have useful data and just clutter
// the filesystem.
File[] files =
new File(m_logDir)
.listFiles((d, name) -> name.startsWith("FRC_TBD_") && name.endsWith(".wpilog"));
if (files != null) {
for (File file : files) {
if (!file.delete()) {
System.err.println("DataLogManager: could not delete " + file);
// Delete all previously existing FRC_TBD_*.wpilog files. These only exist when the robot
// never connects to the DS, so they are very unlikely to have useful data and just clutter
// the filesystem.
File[] files =
new File(m_logDir)
.listFiles((d, name) -> name.startsWith("FRC_TBD_") && name.endsWith(".wpilog"));
if (files != null) {
for (File file : files) {
if (!file.delete()) {
System.err.println("DataLogManager: could not delete " + file);
}
}
}
m_log = new DataLog(m_logDir, makeLogFilename(filename), period);
m_messageLog = new StringLogEntry(m_log, "messages");
// Log all NT entries and connections
if (m_ntLoggerEnabled) {
startNtLog();
}
} else if (m_stopped) {
m_log.setFilename(makeLogFilename(filename));
m_log.resume();
m_stopped = false;
}
m_log = new DataLog(m_logDir, makeLogFilename(filename), period);
m_messageLog = new StringLogEntry(m_log, "messages");
m_thread.start();
if (m_thread == null) {
m_thread = new Thread(DataLogManager::logMain, "DataLogDS");
m_thread.setDaemon(true);
m_thread.start();
}
}
// Log all NT entries and connections
if (m_ntLoggerEnabled) {
startNtLog();
/** Stop data log manager. */
public static synchronized void stop() {
if (m_thread != null) {
m_thread.interrupt();
m_thread = null;
}
if (m_log != null) {
m_log.stop();
m_stopped = true;
}
}