{"record":{"id":"154b46e5d5927f68","repo":"apache/pulsar","slug":"cannnot-get-absolute-path-from-specified-url","errorCode":null,"errorMessage":"Cannnot get absolute path from specified URL","messagePattern":"Cannnot get absolute path from specified URL","errorType":"validation","errorClass":"IllegalArgumentException","httpStatus":null,"severity":"error","filePath":"pulsar-client-auth-athenz/src/main/java/org/apache/pulsar/client/impl/auth/AuthenticationAthenz.java","lineNumber":312,"sourceCode":"        return ztsClient;\n    }\n\n    private static void checkRequiredParams(Map<String, String> authParams, String... requiredParams) {\n        for (String param : requiredParams) {\n            checkArgument(isNotBlank(authParams.get(param)), \"Missing required parameter: %s\", param);\n        }\n    }\n\n    private static String getAbsolutePathFromUrl(String urlString) {\n        try {\n            java.net.URL url = new URL(urlString).openConnection().getURL();\n            checkArgument(\"file\".equals(url.getProtocol()), \"Unsupported protocol: %s\", url.getProtocol());\n            Path path = Paths.get(url.getPath());\n            return path.isAbsolute() ? path.toString() : path.toAbsolutePath().toString();\n        } catch (URISyntaxException e) {\n            throw new IllegalArgumentException(\"Invalid URL format\", e);\n        } catch (InstantiationException | IllegalAccessException | IOException e) {\n            throw new IllegalArgumentException(\"Cannnot get absolute path from specified URL\", e);\n        }\n    }\n\n    private static PrivateKey loadPrivateKey(String privateKeyURL) {\n        PrivateKey privateKey = null;\n        try {\n            URLConnection urlConnection = new URL(privateKeyURL).openConnection();\n            String protocol = urlConnection.getURL().getProtocol();\n            if (\"data\".equals(protocol) && !APPLICATION_X_PEM_FILE.equals(urlConnection.getContentType())) {\n                throw new IllegalArgumentException(\n                        \"Unsupported media type or encoding format: \" + urlConnection.getContentType());\n            }\n            String keyData = CharStreams.toString(new InputStreamReader((InputStream) urlConnection.getContent(),\n                    Charset.defaultCharset()));\n            privateKey = Crypto.loadPrivateKey(keyData);\n        } catch (URISyntaxException e) {\n            throw new IllegalArgumentException(\"Invalid privateKey format\", e);\n        } catch (CryptoException | InstantiationException | IllegalAccessException | IOException e) {","sourceCodeStart":294,"sourceCodeEnd":330,"githubUrl":"https://github.com/apache/pulsar/blob/820761864ed8e2a7d2e52dd9763ad2ae117c1395/pulsar-client-auth-athenz/src/main/java/org/apache/pulsar/client/impl/auth/AuthenticationAthenz.java#L294-L330","documentation":"getAbsolutePathFromUrl wraps InstantiationException, IllegalAccessException, and IOException into IllegalArgumentException('Cannnot get absolute path from specified URL'). This fires when the URL is syntactically valid (unlike the URISyntaxException case) but the connection/open step fails — e.g. the file does not exist or cannot be opened.","triggerScenarios":"configure()/setAuthParams given a privateKeyPath file URL whose target file is missing, unreadable (permissions), or whose connection throws IOException during getAbsolutePathFromUrl.","commonSituations":"Wrong absolute path after moving config between hosts; the process user lacks read permission on the key file; relative path assumed to resolve to an existing file but file absent.","solutions":["Confirm the file exists and is readable: ls -l /path/to/key.pem as the same user running Pulsar","Use an absolute path (the method resolves relative paths, but the file must still exist)","If the key is not on local disk, embed it directly with a data:application/x-pem-file URI in 'privateKey'"],"exampleFix":"// before\n{\"privateKeyPath\":\"file:///etc/pulsar/athenz_priv_key.pem\"} // file does not exist\n// after\n$ ls /etc/pulsar/  # verify the file, fix the path\n{\"privateKeyPath\":\"file:///etc/pulsar/actual_key.pem\"}","handlingStrategy":"validation","validationCode":"String path = URI.create(keyUrl).getPath();\nif (!Files.isRegularFile(Paths.get(path))) {\n    throw new IllegalArgumentException(\"privateKeyPath target does not exist: \" + path);\n}\nif (!Files.isReadable(Paths.get(path))) {\n    throw new IllegalArgumentException(\"privateKeyPath not readable by this user: \" + path);\n}","typeGuard":"boolean isReadableFile(String fileUrl) {\n    try { return Files.isReadable(Paths.get(URI.create(fileUrl).getPath())); }\n    catch (Exception e) { return false; }\n}","tryCatchPattern":"try {\n    authentication.configure(authParamsJson);\n} catch (IllegalArgumentException e) {\n    if (e.getMessage().contains(\"Cannnot get absolute path\")) {\n        log.error(\"Key URL is valid but unreadable — check the file exists and permissions\");\n    }\n    throw e;\n}","preventionTips":["Check file existence and permissions as the running user before startup","Use absolute paths; avoid depending on the process working directory","Mount/copy the key consistently across environments (containers, hosts)"],"tags":["java","io","athenz","file-not-found"],"backgroundTag":"file-not-found","analyzedSha":"820761864ed8e2a7d2e52dd9763ad2ae117c1395","analyzedAt":"2026-09-06T00:14:20.138Z","contentChangedAt":"2026-09-06T00:14:20.138Z","schemaVersion":2},"datasetVersion":"2026-09-14T00:17:10.932Z"}