processOsReleaseFile() — netty Function Reference

Architecture documentation for the processOsReleaseFile() function in PlatformDependent.java from the netty codebase.

Function java CommonUtil Internal calls 1 called by 1

Entity Profile

CommonUtil→ Internal→ processOsReleaseFile() — netty Function Reference

Dependency Diagram

graph TD
  04af2971_ee46_5718_75c6_cb4b676d93ea["processOsReleaseFile()"]
  2e66d079_807f_6785_864f_73ab09fbc515["PlatformDependent"]
  04af2971_ee46_5718_75c6_cb4b676d93ea -->|defined in| 2e66d079_807f_6785_864f_73ab09fbc515
  1c895ca2_fef1_2d9b_57c3_408b0d38cf3d["addFilesystemOsClassifiers()"]
  1c895ca2_fef1_2d9b_57c3_408b0d38cf3d -->|calls| 04af2971_ee46_5718_75c6_cb4b676d93ea
  b63b354c_fa66_c294_5025_45df39045571["addClassifier()"]
  04af2971_ee46_5718_75c6_cb4b676d93ea -->|calls| b63b354c_fa66_c294_5025_45df39045571
  style 04af2971_ee46_5718_75c6_cb4b676d93ea fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

common/src/main/java/io/netty/util/internal/PlatformDependent.java lines 304–336

    private static boolean processOsReleaseFile(String osReleaseFileName, Set<String> availableClassifiers) {
        Path file = Paths.get(osReleaseFileName);
        return AccessController.doPrivileged((PrivilegedAction<Boolean>) () -> {
            try {
                if (Files.exists(file)) {
                    try (BufferedReader reader = new BufferedReader(new InputStreamReader(
                            new BoundedInputStream(Files.newInputStream(file)), StandardCharsets.UTF_8))) {
                        String line;
                        while ((line = reader.readLine()) != null) {
                            if (line.startsWith(LINUX_ID_PREFIX)) {
                                String id = normalizeOsReleaseVariableValue(
                                        line.substring(LINUX_ID_PREFIX.length()));
                                addClassifier(availableClassifiers, id);
                            } else if (line.startsWith(LINUX_ID_LIKE_PREFIX)) {
                                line = normalizeOsReleaseVariableValue(
                                        line.substring(LINUX_ID_LIKE_PREFIX.length()));
                                addClassifier(availableClassifiers, line.split(" "));
                            }
                        }
                    } catch (SecurityException e) {
                        logger.debug("Unable to read {}", osReleaseFileName, e);
                    } catch (IOException e) {
                        logger.debug("Error while reading content of {}", osReleaseFileName, e);
                    }
                    // specification states we should only fall back if /etc/os-release does not exist
                    return true;
                }
            } catch (SecurityException e) {
                logger.debug("Unable to check if {} exists", osReleaseFileName, e);
            }
            return false;
        });
    }