protected Object doExecute()

in gshell/gshell-log/src/main/java/org/apache/servicemix/kernel/gshell/log/SetLogLevel.java [50:112]
60 lines of code
18 McCabe index (conditional complexity)

    protected Object doExecute() throws Exception {
        if (ROOT_LOGGER.equalsIgnoreCase(this.logger)) {
            this.logger = null;
        }
        if (!TRACE.equals(level) &&
                !DEBUG.equals(level) &&
                !INFO.equals(level) &&
                !WARN.equals(level) &&
                !ERROR.equals(level) &&
                !INHERITED.equals(level)) {
            io.err.println("level must be set to TRACE, DEBUG, INFO, WARN or ERROR (or - to unset it)");
            return Result.FAILURE;
        }
        if (INHERITED.equals(level) && logger == null) {
            io.err.println("Can not unset the ROOT logger");
            return Result.FAILURE;
        }

        ConfigurationAdmin cfgAdmin = getConfigAdmin();
        Configuration cfg = cfgAdmin.getConfiguration(CONFIGURATION_PID, null);
        Dictionary props = cfg.getProperties();

        String logger = this.logger;
        String val;
        String prop;
        if (logger == null) {
            prop = ROOT_LOGGER_PREFIX;
        } else {
            prop = LOGGER_PREFIX + logger;
        }
        val = (String) props.get(prop);
        if (INHERITED.equals(level)) {
            if (val != null) {
                val = val.trim();
                int idx = val.indexOf(",");
                if (idx > 0) {
                    val = val.substring(idx);
                } else {
                    val = null;
                }
            }
        } else {
            if (val == null) {
                val = level;
            } else {
                val = val.trim();
                int idx = val.indexOf(",");
                if (idx == 0) {
                    val = level + val;
                } else if (idx > 0) {
                    val = level + val.substring(idx);
                }
            }
        }
        if (val == null) {
            props.remove(prop);
        } else {
            props.put(prop, val);
        }
        cfg.update(props);

        return Result.SUCCESS;
    }