Delayed Fediverse publication

This commit is contained in:
Tim Zöller 2026-04-06 20:51:17 +02:00
parent 47fd3808d2
commit e203250104
16 changed files with 98 additions and 136 deletions

View file

@ -1,7 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="DataSourcePerFileMappings">
<file url="file://$APPLICATION_CONFIG_DIR$/consoles/db/2564811a-81f9-4d83-b1b1-04cb2763e3fa/console.sql" value="2564811a-81f9-4d83-b1b1-04cb2763e3fa" />
<file url="file://$APPLICATION_CONFIG_DIR$/consoles/db/2564811a-81f9-4d83-b1b1-04cb2763e3fa/console_1.sql" value="2564811a-81f9-4d83-b1b1-04cb2763e3fa" />
</component>
</project>

1
.idea/sqldialects.xml generated
View file

@ -3,5 +3,6 @@
<component name="SqlDialectMappings">
<file url="file://$PROJECT_DIR$/src/main/resources/db/migration/V23__add_gadm_table.sql" dialect="PostgreSQL" />
<file url="file://$PROJECT_DIR$/src/main/resources/db/migration/V24__add_location_to_activity.sql" dialect="PostgreSQL" />
<file url="file://$PROJECT_DIR$/src/main/resources/db/migration/V26__add_published_to_activities.sql" dialect="H2" />
</component>
</project>

View file

@ -120,13 +120,8 @@ public class ActivityController {
// - Personal Records checking
// - Weather data fetching
// - Heatmap grid updates
// - Federation push (includes image generation)
//
// Operations run in separate transactions with proper ordering:
// - Personal Records and Heatmap run in parallel
// - Weather Federation run sequentially (weather must complete before federation)
//
// Activity is immediately visible to user, processing continues in background
// Federation is deferred until the user finalizes via PUT (metadata update)
activityPostProcessingService.processActivityAsync(activity.getId(), user.getId());
log.info("Activity {} created and queued for async post-processing", activity.getId());
@ -269,9 +264,15 @@ public class ActivityController {
request.getTitle(),
request.getDescription(),
request.getVisibility(),
request.getActivityType(),
request.getRace()
);
// Trigger federation on publish if visibility allows it
if (updated.getVisibility() != Activity.Visibility.PRIVATE) {
activityPostProcessingService.publishToFederationAsync(updated.getId(), userId);
}
ActivityDTO dto = ActivityDTO.fromEntity(updated);
return ResponseEntity.ok(dto);
} catch (IllegalArgumentException e) {
@ -302,9 +303,10 @@ public class ActivityController {
return ResponseEntity.notFound().build();
}
// Only send Delete activity if it was previously federated (public or followers-only)
boolean shouldFederate = activity.getVisibility() == Activity.Visibility.PUBLIC ||
activity.getVisibility() == Activity.Visibility.FOLLOWERS;
// Only send Delete activity if it was previously published and federated
boolean shouldFederate = Boolean.TRUE.equals(activity.getPublished()) &&
(activity.getVisibility() == Activity.Visibility.PUBLIC ||
activity.getVisibility() == Activity.Visibility.FOLLOWERS);
// Delete from database
boolean deleted = fitFileService.deleteActivity(id, userId);

View file

@ -27,5 +27,7 @@ public class ActivityUpdateRequest {
@NotNull(message = "Visibility is required")
private Activity.Visibility visibility;
private Activity.ActivityType activityType;
private Boolean race; // Race/competition flag
}

View file

@ -148,6 +148,15 @@ public class Activity {
@Builder.Default
private Boolean race = false;
/**
* Whether this activity has been published (finalized by the user).
* New activities default to unpublished. Federation and public visibility
* are deferred until the user saves the activity details (title, description, visibility).
*/
@Column(name = "published", nullable = false)
@Builder.Default
private Boolean published = false;
@OneToOne(mappedBy = "activity", cascade = CascadeType.ALL, orphanRemoval = true)
private ActivityMetrics metrics;

View file

@ -21,14 +21,6 @@ public interface WeatherDataRepository extends JpaRepository<WeatherData, UUID>
*/
Optional<WeatherData> findByActivityId(UUID activityId);
/**
* Check if weather data exists for an activity.
*
* @param activityId the activity ID
* @return true if weather data exists
*/
boolean existsByActivityId(UUID activityId);
/**
* Delete weather data for an activity.
*

View file

@ -252,7 +252,7 @@ public class ActivityFileService {
: ActivityFormatter.generateActivityTitle(parsedData.getStartTime(), parsedData.getActivityType());
// Default to PUBLIC if visibility not specified
Activity.Visibility activityVisibility = visibility != null ? visibility : Activity.Visibility.PUBLIC;
Activity.Visibility activityVisibility = visibility != null ? visibility : Activity.Visibility.PRIVATE;
// Create activity entity
Activity activity = Activity.builder()
@ -301,10 +301,9 @@ public class ActivityFileService {
activity.setMetrics(metrics);
}
var res = activity.findFirstTrackpoint()
.map(tp -> reverseGeolocationRepository.findForLocation(tp.lon(), tp.lat()));
res.ifPresent(reverseGeolocation -> activity.setActivityLocation(reverseGeolocation.formatWithHighestResolution()));
activity.findFirstTrackpoint()
.map(tp -> reverseGeolocationRepository.findForLocation(tp.lon(), tp.lat()))
.ifPresent(reverseGeolocation -> activity.setActivityLocation(reverseGeolocation.formatWithHighestResolution()));
// Save activity (single INSERT instead of 855!)
Activity savedActivity = activityRepository.save(activity);

View file

@ -83,13 +83,12 @@ public class ActivityImageService {
g2d.drawImage(mapTiles, 0, 0, null);
// 80s Aerobic style gradient background for metadata area (right 40%)
int metadataX = trackWidth;
GradientPaint gradient = new GradientPaint(
metadataX, 0, new Color(26, 0, 51), // Dark purple
trackWidth, 0, new Color(26, 0, 51), // Dark purple
width, height, new Color(45, 0, 82) // Lighter purple
);
g2d.setPaint(gradient);
g2d.fillRect(metadataX, 0, width - metadataX, height);
g2d.fillRect(trackWidth, 0, width - trackWidth, height);
log.debug("Rendered OSM tiles for activity {}", activity.getId());
} catch (Exception e) {

View file

@ -11,8 +11,6 @@ import net.javahippie.fitpub.util.ActivityFormatter;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import java.util.HashMap;
import java.util.List;
@ -21,16 +19,11 @@ import java.util.UUID;
/**
* Service for asynchronous post-processing of activities after upload.
* Coordinates expensive operations (Personal Records, Weather, Heatmap, Federation)
* in separate transactions to avoid blocking the upload response.
* Coordinates expensive operations (Personal Records, Weather, Heatmap)
* to avoid blocking the upload response.
*
* Each operation runs asynchronously with REQUIRES_NEW transaction propagation
* to ensure fault isolation - failures in one operation don't affect others.
*
* Operations execute in the following order:
* - Personal Records: Runs independently (parallel)
* - Heatmap: Runs independently (parallel)
* - Weather Federation: Sequential chain (weather must complete before federation)
* Federation is NOT triggered here it is deferred until the user
* finalizes the activity via the metadata update (PUT) endpoint.
*/
@Service
@RequiredArgsConstructor
@ -52,10 +45,6 @@ public class ActivityPostProcessingService {
* Orchestrates async post-processing operations for an uploaded activity.
* Called after activity is saved and immediately visible to the user.
*
* Personal Records and Heatmap run independently in parallel.
* Weather and Federation run sequentially (weather must complete first for future share pic integration).
*
* All operations use separate transactions (REQUIRES_NEW) for fault isolation.
* Errors are logged but don't propagate - each operation fails independently.
*
* @param activityId the saved activity ID
@ -65,28 +54,18 @@ public class ActivityPostProcessingService {
public void processActivityAsync(UUID activityId, UUID userId) {
log.info("Starting async post-processing for activity {} by user {}", activityId, userId);
// Run post-processing operations in background thread
// All operations run sequentially with separate transactions (REQUIRES_NEW)
// for fault isolation - failures in one operation don't affect others
updatePersonalRecordsAsync(activityId);
updateHeatmapAsync(activityId);
// Weather must complete before federation for potential weather data in share images
fetchWeatherAsync(activityId);
publishToFederationAsync(activityId, userId);
log.info("Completed async post-processing for activity {}", activityId);
}
/**
* Check and update personal records for the activity.
* Called internally from processActivityAsync background thread.
* Runs in a separate transaction to isolate from main upload transaction.
*
* @param activityId the activity ID to process
*/
@Transactional(propagation = Propagation.REQUIRES_NEW)
void updatePersonalRecordsAsync(UUID activityId) {
try {
log.debug("Async: Checking personal records for activity {}", activityId);
@ -107,12 +86,9 @@ public class ActivityPostProcessingService {
/**
* Update heatmap grid with activity GPS data.
* Called internally from processActivityAsync background thread.
* Runs in a separate transaction to isolate from main upload transaction.
*
* @param activityId the activity ID to process
*/
@Transactional(propagation = Propagation.REQUIRES_NEW)
void updateHeatmapAsync(UUID activityId) {
try {
log.debug("Async: Updating heatmap for activity {}", activityId);
@ -133,14 +109,9 @@ public class ActivityPostProcessingService {
/**
* Fetch weather data for the activity location and time.
* Called internally from processActivityAsync background thread.
* Runs in a separate transaction to isolate from main upload transaction.
*
* Must complete before federation push to allow future integration of weather in share images.
*
* @param activityId the activity ID to process
*/
@Transactional(propagation = Propagation.REQUIRES_NEW)
void fetchWeatherAsync(UUID activityId) {
try {
log.debug("Async: Fetching weather for activity {}", activityId);
@ -162,17 +133,15 @@ public class ActivityPostProcessingService {
/**
* Publish activity to the Fediverse (ActivityPub federation).
* Generates activity image and sends Create activity to all follower inboxes.
* Called internally from processActivityAsync background thread.
* Runs in a separate transaction to isolate from main upload transaction.
*
* Only publishes if activity visibility is PUBLIC or FOLLOWERS.
* This method should run AFTER weather fetch completes for future share pic integration.
* Called from the controller when the user finalizes activity metadata.
*
* @param activityId the activity ID to publish
* @param userId the user ID who owns the activity
*/
@Transactional(propagation = Propagation.REQUIRES_NEW)
void publishToFederationAsync(UUID activityId, UUID userId) {
@Async("taskExecutor")
public void publishToFederationAsync(UUID activityId, UUID userId) {
try {
log.debug("Async: Publishing activity {} to Fediverse", activityId);

View file

@ -436,7 +436,7 @@ public class FitFileService {
* @throws IllegalArgumentException if activity doesn't exist or user doesn't own it
*/
@Transactional
public Activity updateActivity(UUID activityId, UUID userId, String title, String description, Activity.Visibility visibility, Boolean race) {
public Activity updateActivity(UUID activityId, UUID userId, String title, String description, Activity.Visibility visibility, Activity.ActivityType activityType, Boolean race) {
// Fetch the existing activity within the transaction
Activity existing = activityRepository.findByIdAndUserId(activityId, userId)
.orElseThrow(() -> new IllegalArgumentException("Activity not found or user does not own it: " + activityId));
@ -445,7 +445,11 @@ public class FitFileService {
existing.setTitle(title);
existing.setDescription(description);
existing.setVisibility(visibility);
if (activityType != null) {
existing.setActivityType(activityType);
}
existing.setRace(race != null ? race : false);
existing.setPublished(true);
// Save will UPDATE because the entity is already managed by the persistence context
return activityRepository.save(existing);

View file

@ -74,13 +74,6 @@ public class WeatherService {
log.debug("Weather API key present: length={} chars, first 4 chars={}...",
apiKey.length(), apiKey.length() > 4 ? apiKey.substring(0, 4) : "???");
// Check if weather data already exists
if (weatherDataRepository.existsByActivityId(activity.getId())) {
log.info("Weather data already exists for activity {}, returning cached data", activity.getId());
return weatherDataRepository.findByActivityId(activity.getId());
}
// Extract start location from track
if (activity.getTrackPointsJson() == null || activity.getTrackPointsJson().isEmpty()) {
log.warn("No track points available for activity {} - cannot fetch weather", activity.getId());
return Optional.empty();

View file

@ -0,0 +1,7 @@
-- Create with default true to update all existing activities to 'published'
alter table activities
add column published BOOLEAN NOT NULL DEFAULT TRUE;
-- Change the default
alter table activities
alter column published SET DEFAULT FALSE;

View file

@ -17,13 +17,6 @@
Upload Activity
</h2>
<!-- Success Alert -->
<div id="successAlert" class="alert alert-success d-none" role="alert">
<i class="bi bi-check-circle-fill"></i>
<span id="successMessage">Activity uploaded successfully!</span>
<a href="#" id="viewActivityLink" class="alert-link">View activity</a>
</div>
<!-- Error Alert -->
<div id="errorAlert" class="alert alert-danger d-none" role="alert">
<i class="bi bi-exclamation-triangle-fill"></i>
@ -36,9 +29,6 @@
<form id="uploadForm" enctype="multipart/form-data">
<!-- File Upload Area -->
<div class="mb-4">
<label class="form-label fw-bold">
Activity File <span class="text-danger">*</span>
</label>
<div class="file-upload-area" id="fileUploadArea">
<input type="file"
id="fitFile"
@ -99,6 +89,33 @@
</div>
</div>
<!-- Activity Type -->
<div class="mb-3">
<label for="activityType" class="form-label">
Activity Type <span class="text-danger">*</span>
</label>
<select class="form-select" id="activityType" name="activityType" required>
<option value="RUN">Run</option>
<option value="RIDE">Ride</option>
<option value="HIKE">Hike</option>
<option value="WALK">Walk</option>
<option value="SWIM">Swim</option>
<option value="ALPINE_SKI">Alpine Ski</option>
<option value="BACKCOUNTRY_SKI">Backcountry Ski</option>
<option value="NORDIC_SKI">Nordic Ski</option>
<option value="SNOWBOARD">Snowboard</option>
<option value="ROWING">Rowing</option>
<option value="KAYAKING">Kayaking</option>
<option value="CANOEING">Canoeing</option>
<option value="INLINE_SKATING">Inline Skating</option>
<option value="ROCK_CLIMBING">Rock Climbing</option>
<option value="MOUNTAINEERING">Mountaineering</option>
<option value="YOGA">Yoga</option>
<option value="WORKOUT">Workout</option>
<option value="OTHER">Other</option>
</select>
</div>
<!-- Description -->
<div class="mb-3">
<label for="description" class="form-label">
@ -121,9 +138,9 @@
Visibility <span class="text-danger">*</span>
</label>
<select class="form-select" id="visibility" name="visibility">
<option value="PUBLIC" selected>Public - Anyone can see</option>
<option value="PUBLIC">Public - Anyone can see</option>
<option value="FOLLOWERS">Followers Only - Only your followers can see</option>
<option value="PRIVATE">Private - Only you can see</option>
<option value="PRIVATE" selected>Private - Only you can see</option>
</select>
<div class="form-text">
<i class="bi bi-info-circle"></i>
@ -194,6 +211,7 @@
<script th:inline="javascript">
document.addEventListener('DOMContentLoaded', function() {
const form = document.getElementById('uploadForm');
const fileUploadArea = document.getElementById('fileUploadArea');
const fitFileInput = document.getElementById('fitFile');
const fileLabel = document.getElementById('fileLabel');
const uploadBtn = document.getElementById('uploadBtn');
@ -201,7 +219,6 @@
const uploadBtnSpinner = document.getElementById('uploadBtnSpinner');
const cancelBtn = document.getElementById('cancelBtn');
const errorAlert = document.getElementById('errorAlert');
const successAlert = document.getElementById('successAlert');
const errorMessage = document.getElementById('errorMessage');
const progressContainer = document.getElementById('progressContainer');
const progressBar = document.getElementById('progressBar');
@ -270,7 +287,6 @@
// Hide alerts
errorAlert.classList.add('d-none');
successAlert.classList.add('d-none');
// Show progress
progressContainer.classList.remove('d-none');
@ -309,9 +325,9 @@
progressBar.classList.remove('progress-bar-animated');
progressBar.classList.add('bg-success');
// Show success message
successAlert.classList.remove('d-none');
document.getElementById('viewActivityLink').href = '/activities/' + uploadedActivityId;
// Hide upload form
fileUploadArea.classList.add('d-none');
progressContainer.classList.add('d-none');
// Show metadata section if not already shown
if (metadataSection.classList.contains('d-none')) {
@ -333,8 +349,15 @@
<p class="mb-0"><strong>Date:</strong> ${formattedDateTime}</p>
`;
// Pre-fill title with activity type and date
document.getElementById('title').value = `${response.activityType || 'Activity'} - ${formattedDate}`;
// Use server-generated title (e.g. "Evening Run")
document.getElementById('title').value = response.title || `${response.activityType || 'Activity'} - ${formattedDate}`;
// Pre-select activity type dropdown
const activityTypeRaw = (response.activityType || '').toUpperCase().replace(/ /g, '_');
const activityTypeSelect = document.getElementById('activityType');
if (activityTypeSelect.querySelector(`option[value="${activityTypeRaw}"]`)) {
activityTypeSelect.value = activityTypeRaw;
}
}
// Reset form state
@ -425,13 +448,13 @@
// Hide alerts
errorAlert.classList.add('d-none');
successAlert.classList.add('d-none');
try {
const updateData = {
title: document.getElementById('title').value,
description: document.getElementById('description').value,
visibility: document.getElementById('visibility').value,
activityType: document.getElementById('activityType').value,
race: document.getElementById('race').checked
};

View file

@ -3,26 +3,17 @@ package net.javahippie.fitpub.config;
import org.springframework.boot.test.context.TestConfiguration;
import org.springframework.boot.testcontainers.service.connection.ServiceConnection;
import org.springframework.context.annotation.Bean;
import org.testcontainers.containers.BindMode;
import org.testcontainers.containers.PostgreSQLContainer;
import org.testcontainers.containers.startupcheck.IsRunningStartupCheckStrategy;
import org.testcontainers.containers.startupcheck.StartupCheckStrategy;
import org.testcontainers.containers.wait.strategy.HostPortWaitStrategy;
import org.testcontainers.utility.DockerImageName;
/**
* Testcontainers configuration for tests.
* Automatically starts a PostgreSQL container with PostGIS extension for integration tests.
* Testcontainers configuration for tests and dev mode (via spring-boot:test-run).
* Automatically starts a PostgreSQL container with PostGIS extension.
*/
@TestConfiguration(proxyBeanMethods = false)
public class TestcontainersConfiguration {
/**
* PostgreSQL container with PostGIS extension for tests.
* PostGIS image is treated as a standard PostgreSQL container.
*
* @ServiceConnection automatically configures the datasource from this container.
*/
@Bean
@ServiceConnection
public PostgreSQLContainer<?> postgresContainer() {
@ -34,7 +25,6 @@ public class TestcontainersConfiguration {
.withUsername("test")
.withPassword("test")
.waitingFor(new HostPortWaitStrategy())
.withReuse(true)
.withFileSystemBind(".postgresdata", "/var/lib/postgresql/data", BindMode.READ_WRITE);
.withReuse(true);
}
}

View file

@ -123,7 +123,6 @@ class WeatherServiceTest {
""";
testActivity.setTrackPointsJson(trackPointsJson);
when(weatherDataRepository.existsByActivityId(activityId)).thenReturn(false);
when(restTemplate.getForObject(any(URI.class), eq(String.class)))
.thenReturn(SAMPLE_WEATHER_RESPONSE);
when(weatherDataRepository.save(any(WeatherData.class)))
@ -163,7 +162,6 @@ class WeatherServiceTest {
""";
testActivity.setTrackPointsJson(trackPointsJson);
when(weatherDataRepository.existsByActivityId(activityId)).thenReturn(false);
when(restTemplate.getForObject(any(URI.class), eq(String.class)))
.thenReturn(SAMPLE_WEATHER_RESPONSE);
when(weatherDataRepository.save(any(WeatherData.class)))
@ -211,26 +209,6 @@ class WeatherServiceTest {
verify(restTemplate, never()).getForObject(any(URI.class), eq(String.class));
}
@Test
@DisplayName("Should return cached weather if it already exists")
void testFetchWeather_Cached() {
testActivity.setTrackPointsJson("[{\"latitude\":50.0,\"longitude\":8.0}]");
WeatherData cachedWeather = new WeatherData();
cachedWeather.setActivityId(activityId);
cachedWeather.setTemperatureCelsius(new BigDecimal("20.0"));
when(weatherDataRepository.existsByActivityId(activityId)).thenReturn(true);
when(weatherDataRepository.findByActivityId(activityId)).thenReturn(Optional.of(cachedWeather));
Optional<WeatherData> result = weatherService.fetchWeatherForActivity(testActivity);
assertTrue(result.isPresent());
assertEquals(new BigDecimal("20.0"), result.get().getTemperatureCelsius());
verify(restTemplate, never()).getForObject(any(URI.class), eq(String.class));
verify(weatherDataRepository, never()).save(any(WeatherData.class));
}
@Test
@DisplayName("Should return empty when track points JSON is null")
void testFetchWeather_NoTrackPoints() {
@ -291,8 +269,6 @@ class WeatherServiceTest {
testActivity.setStartedAt(LocalDateTime.now().minusDays(10)); // Old activity
testActivity.setTrackPointsJson("[{\"latitude\":50.0,\"longitude\":8.0}]");
when(weatherDataRepository.existsByActivityId(activityId)).thenReturn(false);
Optional<WeatherData> result = weatherService.fetchWeatherForActivity(testActivity);
assertTrue(result.isEmpty());
@ -305,7 +281,6 @@ class WeatherServiceTest {
void testFetchWeather_AuthenticationError() {
testActivity.setTrackPointsJson("[{\"latitude\":50.0,\"longitude\":8.0}]");
when(weatherDataRepository.existsByActivityId(activityId)).thenReturn(false);
when(restTemplate.getForObject(any(URI.class), eq(String.class)))
.thenThrow(new HttpClientErrorException(
org.springframework.http.HttpStatus.UNAUTHORIZED,
@ -325,7 +300,6 @@ class WeatherServiceTest {
void testFetchWeather_NetworkError() {
testActivity.setTrackPointsJson("[{\"latitude\":50.0,\"longitude\":8.0}]");
when(weatherDataRepository.existsByActivityId(activityId)).thenReturn(false);
when(restTemplate.getForObject(any(URI.class), eq(String.class)))
.thenThrow(new ResourceAccessException("Connection timeout"));
@ -340,7 +314,6 @@ class WeatherServiceTest {
void testFetchWeather_MalformedResponse() {
testActivity.setTrackPointsJson("[{\"latitude\":50.0,\"longitude\":8.0}]");
when(weatherDataRepository.existsByActivityId(activityId)).thenReturn(false);
when(restTemplate.getForObject(any(URI.class), eq(String.class)))
.thenReturn("this is not valid JSON");
@ -372,7 +345,6 @@ class WeatherServiceTest {
testActivity.setTrackPointsJson("[{\"latitude\":50.0,\"longitude\":8.0}]");
when(weatherDataRepository.existsByActivityId(activityId)).thenReturn(false);
when(restTemplate.getForObject(any(URI.class), eq(String.class)))
.thenReturn(responseWithRain);
when(weatherDataRepository.save(any(WeatherData.class)))
@ -414,7 +386,6 @@ class WeatherServiceTest {
testActivity.setTrackPointsJson("[{\"latitude\":50.0,\"longitude\":8.0}]");
when(weatherDataRepository.existsByActivityId(activityId)).thenReturn(false);
when(restTemplate.getForObject(any(URI.class), eq(String.class)))
.thenReturn(minimalResponse);
when(weatherDataRepository.save(any(WeatherData.class)))
@ -470,7 +441,6 @@ class WeatherServiceTest {
""";
testActivity.setTrackPointsJson(trackPointsJson);
when(weatherDataRepository.existsByActivityId(activityId)).thenReturn(false);
when(restTemplate.getForObject(any(URI.class), eq(String.class)))
.thenReturn(SAMPLE_WEATHER_RESPONSE);
when(weatherDataRepository.save(any(WeatherData.class)))

View file

@ -16,7 +16,10 @@ public class FitFileAnalyzer {
private static final double SEMICIRCLES_TO_DEGREES = 180.0 / Math.pow(2, 31);
private static final long FIT_EPOCH_OFFSET = 631065600L;
public static void main(String[] args) {
/**
* Run from IDE or via {@code analyzeFitFile(path)} directly.
*/
public static void analyze(String[] args) {
if (args.length == 0) {
System.out.println("Usage: FitFileAnalyzer <path-to-fit-file>");
System.exit(1);