{"record":{"id":"c141813d8fbb5a40","repo":"Intervention/image","slug":"unable-to-analyze-image-colors-failed-to-transfor","errorCode":null,"errorMessage":"Unable to analyze image colors, failed to transform color space","messagePattern":"Unable to analyze image colors, failed to transform color space","errorType":"exception","errorClass":"Intervention\\Image\\Exceptions\\AnalyzerException","httpStatus":null,"severity":"error","filePath":"src/Analyzers/DominantPaletteAnalyzer.php","lineNumber":113,"sourceCode":"\n        // palette has already a limit of k and is already sorted by cluster size\n        return $palette;\n    }\n\n    /**\n     * Transform color to flattened oklab color channel triples which can be used for clustering.\n     *\n     * @param Generator<ColorInterface> $colors\n     * @throws AnalyzerException\n     * @return array<array{float, float, float}>\n     */\n    private function clusterableColors(Generator $colors): array\n    {\n        $clusterable = [];\n        foreach ($colors as $color) {\n            $oklab = $color->toColorspace(Oklab::class);\n            if (!$oklab instanceof OklabColor) {\n                throw new AnalyzerException('Unable to analyze image colors, failed to transform color space');\n            }\n\n            $clusterable[] = [\n                $oklab->lightness()->value(),\n                $oklab->a()->value(),\n                $oklab->b()->value(),\n            ];\n        }\n\n        return $clusterable;\n    }\n\n    /**\n     * Perform K-means clustering on Oklab value triples.\n     *\n     * @param array<array{float, float, float}> $points\n     * @return array<array{centroid: array{float, float, float}, size: int}>\n     */","sourceCodeStart":95,"sourceCodeEnd":131,"githubUrl":"https://github.com/Intervention/image/blob/5598b9e39751c34afc5cdee84abef77f92c26f68/src/Analyzers/DominantPaletteAnalyzer.php#L95-L131","documentation":"This FileNotReadableException is the last-resort guard in filePathFromSplFileInfoOrFail(): SplFileInfo::getRealPath() returned false even though the file existed and was readable a few lines earlier. realpath() fails when the canonical path cannot be resolved, which in practice means the file disappeared between the earlier checks and this call (a race condition), or a symlink loop/broken symlink chain prevents canonicalization.","triggerScenarios":"Another process deletes or renames the file in the window between the is_readable() check and $splFileInfo->getRealPath(); symlink loops (a link pointing back into its own chain); open_basedir restrictions that make realpath refuse paths outside allowed directories; network mounts that drop mid-operation.","commonSituations":"Queue workers and web requests racing on the same temp file (one finishes first and unlinks it); cleanup jobs (tmpwatch, cron) removing uploads while they are processed; flaky NFS mounts where existence checks pass but resolution fails; symlinked storage directories with cyclic links created by deployment scripts.","solutions":["Retry the operation once after re-checking file_exists(), since the usual cause is a transient race","Remove whatever deletes/moves the file concurrently, or copy the file to a private temp path you control before processing it","Audit symlinks on the path (ls -l each segment) and break any loops or dangling chains","If open_basedir is active, ensure the file's real location is inside the allowed paths"],"exampleFix":"// before\n$image = $manager->read(new SplFileInfo($sharedTempPath)); // another worker unlinks it mid-call\n\n// after: work on a private copy so no other process can pull it away\ncopy($sharedTempPath, $private = tempnam(sys_get_temp_dir(), 'img'));\n$image = $manager->read(new SplFileInfo($private));","handlingStrategy":"try-catch","validationCode":"// Reduces but cannot eliminate the race\n$path = $splFileInfo->getPathname();\nif (!is_string($real = realpath($path))) {\n    throw new \\RuntimeException('Cannot resolve real path for: ' . $path);\n}\n$image = $manager->read(new \\SplFileInfo($real));","typeGuard":null,"tryCatchPattern":"use Intervention\\Image\\Exceptions\\FileNotReadableException;\n\ntry {\n    $image = $manager->read($file);\n} catch (FileNotReadableException $e) {\n    if (str_contains($e->getMessage(), 'Failed to read file')) {\n        // realpath() lost the file: transient race or symlink loop — retry once or re-create the source\n        usleep(100000);\n        $image = $manager->read($file);\n    }\n}","preventionTips":["Copy shared/transient files into a private temp file before processing; only your code touches the copy","Never unlink temp files until the request/job that consumes them has fully finished","Avoid symlink chains in storage paths; prefer a single canonical storage root"],"tags":["race-condition","realpath","symlink","file-not-readable","intervention-image"],"backgroundTag":"file-deleted-during-processing","analyzedSha":"5598b9e39751c34afc5cdee84abef77f92c26f68","analyzedAt":"2026-08-23T02:17:31.068Z","schemaVersion":2},"datasetVersion":"2026-08-23T08:06:27.607Z"}