Add Discord webhook notifications for player join/quit events#77
Add Discord webhook notifications for player join/quit events#77
Conversation
- Add DiscordWebhookService for sending messages to Discord webhooks - Add config options: discordWebhookEnabled, discordWebhookUrl, discordWebhookStaffOnly, discordWebhookJoinMessage, discordWebhookQuitMessage - Update JoinHandler and QuitHandler to send async Discord notifications - Add at.staff permission for staff-only webhook filtering - Add unit tests for DiscordWebhookService Co-authored-by: dmccoystephenson <21204351+dmccoystephenson@users.noreply.github.com>
…dundant cast Co-authored-by: dmccoystephenson <21204351+dmccoystephenson@users.noreply.github.com>
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Pull request overview
Adds a Discord webhook integration to ActivityTracker to notify a Discord channel when players join/quit, with configuration-driven templates and an optional staff-only filter.
Changes:
- Introduces
DiscordWebhookServiceto POST join/quit messages to a configured Discord webhook URL. - Hooks join/quit event handlers to fire webhook notifications asynchronously, with optional
at.stafffiltering. - Extends config defaults and
/at configoutput to include Discord webhook settings, plus adds unit tests for the new service.
Reviewed changes
Copilot reviewed 7 out of 7 changed files in this pull request and generated 7 comments.
Show a summary per file
| File | Description |
|---|---|
| src/main/java/dansplugins/activitytracker/services/DiscordWebhookService.java | New service that formats and sends webhook POST requests to Discord. |
| src/main/java/dansplugins/activitytracker/services/ConfigService.java | Adds default config values and displays new webhook settings in the config list output. |
| src/main/java/dansplugins/activitytracker/eventhandlers/JoinHandler.java | Schedules async webhook notification on player join with optional staff-only filtering. |
| src/main/java/dansplugins/activitytracker/eventhandlers/QuitHandler.java | Schedules async webhook notification on player quit with optional staff-only filtering. |
| src/main/java/dansplugins/activitytracker/ActivityTracker.java | Wires the new service into handler registration. |
| src/main/resources/plugin.yml | Adds at.staff permission and changes at.list permission default. |
| src/test/java/dansplugins/activitytracker/services/DiscordWebhookServiceTest.java | Adds unit tests for basic enable/config edge cases and invalid URL handling. |
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| plugin.getServer().getScheduler().runTaskAsynchronously(plugin, new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| discordWebhookService.sendQuitNotification(player.getName()); |
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player.getName() is called from within runTaskAsynchronously. Accessing Player off the main server thread is not thread-safe, and during quit events the backing player object may already be in teardown. Capture player.getName() into a local String before scheduling the async task.
| plugin.getServer().getScheduler().runTaskAsynchronously(plugin, new Runnable() { | |
| @Override | |
| public void run() { | |
| discordWebhookService.sendQuitNotification(player.getName()); | |
| final String playerName = player.getName(); | |
| plugin.getServer().getScheduler().runTaskAsynchronously(plugin, new Runnable() { | |
| @Override | |
| public void run() { | |
| discordWebhookService.sendQuitNotification(playerName); |
| at.list: | ||
| default: op |
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This PR also changes the at.list permission to default to op. That permission behavior change isn't mentioned in the PR description and may be a breaking change for existing servers if /at list was previously available to non-ops. If this is intentional, please document it in the PR description/release notes; otherwise, consider reverting this permission default change.
| @Test | ||
| public void testSendJoinNotificationSkipsWhenTemplateIsEmpty() { | ||
| when(configService.getString("discordWebhookJoinMessage")).thenReturn(""); | ||
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| // Should not throw and should not attempt to send | ||
| discordWebhookService.sendJoinNotification("TestPlayer"); | ||
| } |
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Several tests (e.g., the ones for empty/null templates) don't assert or verify any behavior—they will pass even if the method unexpectedly tries to post a webhook. Add Mockito verifications (e.g., verify that configService.getString("discordWebhookUrl")/logger.log(...) are not called, or refactor to inject a transport so posting can be asserted) so regressions are actually caught.
| public void sendJoinNotification(String playerName) { | ||
| String template = configService.getString("discordWebhookJoinMessage"); | ||
| if (template == null || template.isEmpty()) { | ||
| return; | ||
| } | ||
| String message = template.replace("{player}", playerName); | ||
| sendWebhookMessage(message); | ||
| } |
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sendJoinNotification builds and sends a webhook payload regardless of the discordWebhookEnabled flag. Since the service already exposes isEnabled(), these public send methods should short-circuit when disabled (or have sendWebhookMessage enforce the enabled flag) to ensure the config toggle is always respected, even if other call sites are added later.
| return false; | ||
| } | ||
| String url = configService.getString("discordWebhookUrl"); | ||
| return url != null && !url.isEmpty(); |
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isEnabled() treats a whitespace-only discordWebhookUrl as configured, which will then fail later with a malformed URL. Consider trimming the URL and checking !trimmed.isEmpty() so staff-only checks don't schedule failing async tasks for blank-but-nonempty values.
| return url != null && !url.isEmpty(); | |
| if (url == null) { | |
| return false; | |
| } | |
| String trimmed = url.trim(); | |
| return !trimmed.isEmpty(); |
| int responseCode = connection.getResponseCode(); | ||
| if (responseCode < 200 || responseCode >= 300) { | ||
| logger.log("Discord webhook returned error code: " + responseCode); | ||
| } | ||
| } catch (IOException e) { | ||
| logger.log("Failed to send Discord webhook message: " + e.getMessage()); | ||
| } |
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The HttpURLConnection isn't disconnected and the response stream is never consumed/closed. On some JVMs this can leak sockets/file descriptors and degrade reliability over time. Ensure the response InputStream/ErrorStream is closed (even if you only need the status code) and call connection.disconnect() in a finally block (try-with-resources for the output stream also helps).
| plugin.getServer().getScheduler().runTaskAsynchronously(plugin, new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| discordWebhookService.sendJoinNotification(player.getName()); |
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player.getName() is called inside the async task. Bukkit/Spigot API objects (including Player) are generally not thread-safe, and on quit the player object can become invalid. Capture the player name (and any other Bukkit-derived values) on the main thread before scheduling, and only pass the plain String into the async runnable.
| plugin.getServer().getScheduler().runTaskAsynchronously(plugin, new Runnable() { | |
| @Override | |
| public void run() { | |
| discordWebhookService.sendJoinNotification(player.getName()); | |
| final String playerName = player.getName(); | |
| plugin.getServer().getScheduler().runTaskAsynchronously(plugin, new Runnable() { | |
| @Override | |
| public void run() { | |
| discordWebhookService.sendJoinNotification(playerName); |
|
@copilot address comments |
…, connection cleanup, test verifications - Capture player.getName() before async task in JoinHandler and QuitHandler - Trim whitespace-only URLs in isEnabled() check - Add isEnabled() guard at start of sendJoinNotification/sendQuitNotification - Properly disconnect HttpURLConnection and consume response streams - Add Mockito verify() assertions to tests and whitespace URL test case - Use buffered read for response stream consumption Co-authored-by: dmccoystephenson <21204351+dmccoystephenson@users.noreply.github.com>
All review comments addressed in fa9f28b:
Warning Firewall rules blocked me from connecting to one or more addresses (expand for details)I tried to connect to the following addresses, but was blocked by firewall rules:
If you need me to access, download, or install something from one of these locations, you can either:
|
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Pull request overview
Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.
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| plugin.getServer().getScheduler().runTaskAsynchronously(plugin, new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| discordWebhookService.sendQuitNotification(playerName); | ||
| } | ||
| }); |
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Same async-safety concern as in JoinHandler: the runnable calls discordWebhookService.sendQuitNotification(...), which reads plugin config (and may invoke Logger.log() which also reads config). This introduces Bukkit API calls from an asynchronous thread. Snapshot the required config/debug values on the main thread before scheduling, and keep the async work limited to the HTTP request.
| plugin.getServer().getScheduler().runTaskAsynchronously(plugin, new Runnable() { | |
| @Override | |
| public void run() { | |
| discordWebhookService.sendQuitNotification(playerName); | |
| } | |
| }); | |
| // Call on the main thread to avoid accessing Bukkit APIs from an async task | |
| discordWebhookService.sendQuitNotification(playerName); |
| @Before | ||
| public void setUp() { | ||
| MockitoAnnotations.initMocks(this); | ||
| discordWebhookService = new DiscordWebhookService(configService, logger); | ||
| } |
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MockitoAnnotations.initMocks(this) is deprecated in Mockito 3.x and doesn't give you an AutoCloseable to clean up. Prefer MockitoAnnotations.openMocks(this) (and close it in an @After), to match the newer pattern used elsewhere in the tests and avoid potential resource leaks.
| plugin.getServer().getScheduler().runTaskAsynchronously(plugin, new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| discordWebhookService.sendJoinNotification(playerName); | ||
| } | ||
| }); |
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The async task calls discordWebhookService.sendJoinNotification(...), which reads plugin config via ConfigService (ultimately JavaPlugin#getConfig()) and may also call Logger.log() (which checks activityTracker.isDebugEnabled() and reads config again). Bukkit/Spigot API access is generally not thread-safe off the main thread, so this can cause async-access warnings or subtle race issues. Consider snapshotting all needed config values (enabled, staffOnly, url, template, debug flag) on the main thread before scheduling, and have the async runnable only perform the HTTP call using those plain values (no Bukkit API calls).
| plugin.getServer().getScheduler().runTaskAsynchronously(plugin, new Runnable() { | |
| @Override | |
| public void run() { | |
| discordWebhookService.sendJoinNotification(playerName); | |
| } | |
| }); | |
| // Call sendJoinNotification on the main thread to avoid async Bukkit API access | |
| discordWebhookService.sendJoinNotification(playerName); |
|
@copilot address comments; also new config options weren't appearing when I tested this |
… update tests - Always call saveMissingConfigDefaultsIfNotPresent() so new config keys (Discord webhook settings) are written to existing config.yml files - Refactor DiscordWebhookService: separate config reading (main thread) from HTTP sending (async task) via getWebhookUrl(), prepareJoinMessage(), prepareQuitMessage(), sendWebhookMessage(url, content) - Update JoinHandler/QuitHandler to snapshot all config on main thread - Use MockitoAnnotations.openMocks() instead of deprecated initMocks() - Tests updated for new decomposed API Co-authored-by: dmccoystephenson <21204351+dmccoystephenson@users.noreply.github.com>
Fixed in f6f897b: Config not appearing: The root cause was Async-safety: Refactored Tests: Switched from deprecated Warning Firewall rules blocked me from connecting to one or more addresses (expand for details)I tried to connect to the following addresses, but was blocked by firewall rules:
If you need me to access, download, or install something from one of these locations, you can either:
|
Adds Discord webhook integration for player join/quit notifications, modeled after Herald. Includes a staff-only mode that filters notifications to players with
at.staffpermission.New:
DiscordWebhookService{"content": "..."}payload{player}placeholderisEnabled(),isStaffOnly(),getWebhookUrl(),prepareJoinMessage(),prepareQuitMessage()) is separated from HTTP sending (sendWebhookMessage(url, content)) for thread safety — config is read on the main server thread, only the HTTP call runs asynchronouslyConfig options
discordWebhookEnabledfalsediscordWebhookUrl""discordWebhookStaffOnlyfalsediscordWebhookJoinMessage⚔️ **{player}** has joined the server!discordWebhookQuitMessage👋 **{player}** has left the server.Config initialization fix
initializeConfig()now always callssaveMissingConfigDefaultsIfNotPresent()on startup, so new config keys are written to existingconfig.ymlfiles regardless of version match. Previously, existing servers with a matching version would never receive new default keys.Event handlers
JoinHandlerandQuitHandlersnapshot all config values and player name on the main thread, then fire only the HTTP POST viarunTaskAsynchronously— no Bukkit API access from async tasksdiscordWebhookStaffOnlyistrue, only players withat.staff(default: op) trigger notificationsPermission
at.staffadded toplugin.yml(default:op) — used solely as a marker for staff-only filteringTests
DiscordWebhookServicecoveringisEnabled()/isStaffOnly()states,getWebhookUrl()trimming (including whitespace-only),prepareJoinMessage()/prepareQuitMessage()template handling (null/empty/valid),sendWebhookMessage()null/empty URL guards, and invalid URL error loggingMockitoAnnotations.openMocks()with@AftercleanupOriginal prompt
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