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Add bounded asynchronous checked player-presence API - #364
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| Check name | Status | Explanation | Resolution |
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Docstring coverage is 7.78% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 167 functions across 13 files. (1 skipped:… | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request. Description Check Check skipped - CodeRabbit’s high-level summary is enabled. Title check The title clearly and concisely describes the main change: a bounded asynchronous API for checked player-presence lookups.
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Docstring coverage is 7.78% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 167 functions across 13 files. (1 skipped: 1 unsupported.)
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Actionable comments posted: 1
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Inline comments:
Review comments at
@AdvancedCore/src/main/java/com/bencodez/advancedcore/api/user/presence/PlayerPresenceService.java:
- Line 73: Update checkIdentitiesAsync so aggregate admission reserves capacity
for all distinct child checks atomically, preventing checkAsync from rejecting
children after the aggregate consumes the remaining slots. Alternatively, route
children through an internal lookup path that does not acquire another pending
slot; preserve the MAX_PENDING bound.
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📒 Files selected for processing: 10
AdvancedCore/src/main/java/com/bencodez/advancedcore/AdvancedCorePlugin.javaAdvancedCore/src/main/java/com/bencodez/advancedcore/api/user/presence/BukkitPlayerPresenceLookup.javaAdvancedCore/src/main/java/com/bencodez/advancedcore/api/user/presence/PlayerHistoryFormat.javaAdvancedCore/src/main/java/com/bencodez/advancedcore/api/user/presence/PlayerPresence.javaAdvancedCore/src/main/java/com/bencodez/advancedcore/api/user/presence/PlayerPresenceLookup.javaAdvancedCore/src/main/java/com/bencodez/advancedcore/api/user/presence/PlayerPresenceService.javaAdvancedCore/src/test/java/com/bencodez/advancedcore/tests/user/presence/AdvancedCorePlayerPresenceTest.javaAdvancedCore/src/test/java/com/bencodez/advancedcore/tests/user/presence/BukkitPlayerPresenceLookupTest.javaAdvancedCore/src/test/java/com/bencodez/advancedcore/tests/user/presence/PlayerPresenceServiceTest.javadocs/checked-player-presence.md
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🧰 Additional context used
🪛 ast-grep (0.45.3)
AdvancedCore/src/test/java/com/bencodez/advancedcore/tests/user/presence/BukkitPlayerPresenceLookupTest.java
[warning] 106-106: Temporary file not deleted
Context: Files.createTempFile(directory, USER + "-", ".dat")
Note: [CWE-377] Insecure Temporary File. Security best practice.
(tempfile-delete)
[warning] 117-117: Temporary file not deleted
Context: Files.createTempFile(directory, other + "-", ".dat")
Note: [CWE-377] Insecure Temporary File. Security best practice.
(tempfile-delete)
[warning] 136-136: Temporary file not deleted
Context: Files.createTempFile(scope, USER + "-", ".dat")
Note: [CWE-377] Insecure Temporary File. Security best practice.
(tempfile-delete)
[warning] 144-144: Temporary file not deleted
Context: Files.createTempFile(scope, USER + "-", ".dat")
Note: [CWE-377] Insecure Temporary File. Security best practice.
(tempfile-delete)
🪛 LanguageTool
docs/checked-player-presence.md
[grammar] ~14-~14: Use a hyphen to join words.
Context: ...read is queued. Duplicate UUIDs are read only once. The requesting thread perfor...
(QB_NEW_EN_HYPHEN)
🔇 Additional comments: 3
AdvancedCore/src/main/java/com/bencodez/advancedcore/api/user/presence/PlayerPresence.java: 1
1-8: LGTM!AdvancedCore/src/main/java/com/bencodez/advancedcore/api/user/presence/PlayerPresenceLookup.java: 1
1-13: LGTM!AdvancedCore/src/main/java/com/bencodez/advancedcore/AdvancedCorePlugin.java: 1
1345-1370: LGTM!
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| try { | ||
| if (!unlinkedScope()) return PlayerPresence.UNKNOWN; | ||
| BasicFileAttributes before = attributes(historyDirectory); | ||
| if (!before.isDirectory() || before.fileKey() == null) return PlayerPresence.UNKNOWN; |
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On Windows, the default JDK filesystem provider returns null from WindowsFileAttributes.fileKey(), so this condition makes every disk-backed check return UNKNOWN before inspecting any player record. Consequently, offline players with valid history cannot produce JOINED, and no identity can produce NEVER_JOINED; only UUIDs observed joining during the current service generation work. Use a stability check that does not require non-null file keys, with file keys as an optional strengthening when available.
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| BasicFileAttributes after = attributes(file); | ||
| if (!record.fileKey().equals(after.fileKey()) || record.size() != after.size() | ||
| || !record.lastModifiedTime().equals(after.lastModifiedTime())) continue; | ||
| try { valid |= PlayerHistoryFormat.valid(bytes); } |
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When an earlier suffix contains a stable valid record, this line sets valid but continues examining every remaining suffix. If a later sibling such as .dat_old exists but cannot be opened due to permissions or a transient I/O failure, that exception reaches the outer catch and changes the result to UNKNOWN, even though one complete record already proved JOINED. Return after validating a record, or isolate later candidate failures so they cannot erase established positive evidence.
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| if (scopeIdentity.fileKey() != null && cached != null && cached.scope().equals(scopeIdentity) | ||
| && cached.modified().equals(scope.lastModifiedTime())) | ||
| return cached.identities().contains(identity); |
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When the filesystem supplies no file key (notably the Windows provider described in the prior review), this condition rejects every populated cache entry, so each negative presence lookup iterates the entire playerdata directory again—up to one million entries. A burst of admitted checks can therefore perform the same full scan as many as 128 times on the single shared AdvancedCore-Storage executor, delaying unrelated persistence work; retain a safely invalidated keyless index or share one scan across the admitted batch.
AGENTS.md reference: AGENTS.md:L22-L22
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| if (closed || negativeUnavailable || present || failed || recovery | ||
| || (completeOnlineHistory && (observedOfflineHistory || !isSupportedOnlineAlias(identity))) | ||
| || !before.lastModifiedTime().equals(after.lastModifiedTime())) return PlayerPresence.UNKNOWN; | ||
| return joined.contains(identity) ? PlayerPresence.JOINED : PlayerPresence.NEVER_JOINED; |
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When a Spigot/Paper deployment enables players.disable-saving, joined players need not have a .dat file. After a restart they are absent from the generation-local joined set, so a readable directory with no record reaches this branch and reports NEVER_JOINED; consumers following the documented filter will then hide genuine returning players. Capture this platform setting and disable negative evidence while saving is off.
AGENTS.md reference: AGENTS.md:L53-L53
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| try (var entries = Files.newDirectoryStream(historyDirectory)) { | ||
| for (Path entry : entries) { | ||
| if (++examined > MAX_DIRECTORY_ENTRIES) return true; |
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When a batch checks missing UUIDs—especially an alias family or up to 128 admitted requests—each call independently enumerates the entire playerdata directory here before it can return NEVER_JOINED. AdvancedCorePlugin submits these reads to the single AdvancedCore-Storage timer, so on a large server the repeated scans serialize ahead of unrelated persistence work. Fresh evidence beyond the earlier keyless-filesystem comment is that the current follow-up deliberately bypasses the cached absence result on every filesystem, making this repeated scan unconditional for negative lookups; coalesce pending identities into one fresh scan or otherwise keep these scans from monopolizing the shared executor.
AGENTS.md reference: AGENTS.md:L22-L22
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| && cached.modified().equals(scope.lastModifiedTime()) | ||
| && (cached.identities().contains(identity) || (completeOnlineHistory && cached.offlineHistory()))) | ||
| return true; | ||
| RecoverySnapshot scanned = scanRecovery(scope, Set.of()); |
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When callers use the public BukkitPlayerPresenceLookup.check() directly and a canonical .dat file is created after the point checks, this scan receives an empty candidate set and therefore ignores that canonical entry. On filesystems where the directory timestamp collides or has coarse resolution, the final metadata check still passes and the method can return NEVER_JOINED for a player whose record now exists; pass the queried UUID into the scan just as checkBatch does so canonical records discovered during enumeration invalidate the negative result. This direct path matters because the lookup class, constructor, and check method are public compatibility surfaces.
AGENTS.md reference: AGENTS.md:L31-L31
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Add bounded asynchronous JOINED / NEVER_JOINED / UNKNOWN checks for resolved UUIDs and up to eight verified aliases. Checks use the existing worker and retained server history without profile lookups, user creation or persistence changes. Only confirmed absence supports NEVER_JOINED; unreadable, unstable, interrupted or ambiguous history remains UNKNOWN.
Direct lookups now include the queried UUID in recovery enumeration, so canonical records appearing after point checks prevent a false negative even when directory timestamps collide. Both direct query modes and all retained canonical suffixes are covered.
Latest follow-up:
e4b38ac3ea1afa357f1664c8d081ffae2a7380ab. Pending built-in lookups register in order on the shared storage worker, then share one fresh bounded directory scan per cohort. Later requests cannot overtake queued persistence. Custom providers retain individual scheduling. Keyless filesystems, colliding timestamps, records appearing during a scan, cancellation, close and executor rejection preserve conservative results. Player-saving policy remains captured at enable; disabled or unavailable saving prevents negative evidence.Validation for the identical reviewed source tree
5e7b525552e5c8b1856952adad76cfa8b811ecda:No findings.This covers the two-file direct-query follow-up and affected lookup contracts; the earlier six-file coalescing review remains historical coverage.2f47a6f5f3f58013daf207d81f72e1c8fb8633a650576ec25167a1de51c3658c.New-head hosted CI and automatic review are pending. Normal dependency publication/adoption, live server testing and actual Windows execution remain separate checks. No merge, release or deployment is included.
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