protected void persistConfiguration()

in config/src/main/java/org/apache/karaf/cellar/config/ConfigurationSupport.java [222:273]
44 lines of code
18 McCabe index (conditional complexity)

    protected void persistConfiguration(Configuration cfg, Dictionary clusterDictionary) {
        try {
            File storageFile = getStorageFile(cfg.getProperties());

            if (storageFile == null && cfg.getProperties().get(ConfigurationAdmin.SERVICE_FACTORYPID) != null) {
                storageFile = new File(storage, cfg.getPid() + ".cfg");
            }
            if (storageFile == null) {
                // it's a factory configuration without filename specified, cannot save
                return;
            }

            String content = clusterDictionary == null ? null : (String) clusterDictionary.get(KARAF_CELLAR_CONTENT);

            if (content == null) {
                org.apache.felix.utils.properties.Properties p = new org.apache.felix.utils.properties.Properties(storageFile);
                List<String> propertiesToRemove = new ArrayList<String>();
                Set<String> set = p.keySet();

                for (String key : set) {
                    if (!org.osgi.framework.Constants.SERVICE_PID.equals(key)
                            && !ConfigurationAdmin.SERVICE_FACTORYPID.equals(key)
                            && !KARAF_CELLAR_FILENAME.equals(key)
                            && !FELIX_FILEINSTALL_FILENAME.equals(key)) {
                        propertiesToRemove.add(key);
                    }
                }

                for (String key : propertiesToRemove) {
                    p.remove(key);
                }
                Dictionary props = cfg.getProperties();
                for (Enumeration<String> keys = props.keys(); keys.hasMoreElements(); ) {
                    String key = keys.nextElement();
                    if (!org.osgi.framework.Constants.SERVICE_PID.equals(key)
                            && !ConfigurationAdmin.SERVICE_FACTORYPID.equals(key)
                            && !KARAF_CELLAR_FILENAME.equals(key)
                            && !FELIX_FILEINSTALL_FILENAME.equals(key)) {
                        p.put(key, (String) props.get(key));
                    }
                }

                // save the cfg file
                storage.mkdirs();
                p.save();
            } else {
                writeFile(storageFile, content);
            }
        } catch (Exception e) {
            LOGGER.error("CELLAR CONFIG: Issue when trying to persist configuration file", e);
        }
    }