private static int getProcessId0()

in common/src/main/java/org/mvndaemon/mvnd/common/DaemonRegistry.java [282:313]

32 lines of code
7 McCabe index (conditional complexity)


    private static int getProcessId0() {
        if (Os.current() == Os.LINUX) {
            try {
                final Path self = Paths.get("/proc/self");
                if (Files.exists(self)) {
                    String pid = self.toRealPath().getFileName().toString();
                    if (pid.equals("self")) {
                        LOGGER.debug("/proc/self symlink could not be followed");
                    } else {
                        LOGGER.debug("loading own PID from /proc/self link: {}", pid);
                        try {
                            return Integer.parseInt(pid);
                        } catch (NumberFormatException x) {
                            LOGGER.warn("Unable to determine PID from malformed /proc/self link `{}`", pid);
                        }
                    }
                }
            } catch (IOException ignored) {
                LOGGER.debug("could not load /proc/self", ignored);
            }
        }
        String vmname = ManagementFactory.getRuntimeMXBean().getName();
        String pid = vmname.split("@", 0)[0];
        LOGGER.debug("loading own PID from VM name: {}", pid);
        try {
            return Integer.parseInt(pid);
        } catch (NumberFormatException x) {
            int rpid = new Random().nextInt(1 << 16);
            LOGGER.warn("Unable to determine PID from malformed VM name `{}`, picked a random number={}", vmname, rpid);
            return rpid;
        }
    }