public static Map createPropertiesSnapshot()

in genie-common-internal/src/main/java/com/netflix/genie/common/internal/util/PropertySourceUtils.java [79:119]
35 lines of code
9 McCabe index (conditional complexity)

    public static Map<String, String> createPropertiesSnapshot(
        final Environment environment,
        final String prefix
    ) {
        // Obtain properties sources from environment
        final PropertySources propertySources;
        if (environment instanceof ConfigurableEnvironment) {
            propertySources = ((ConfigurableEnvironment) environment).getPropertySources();
        } else {
            propertySources = new StandardEnvironment().getPropertySources();
        }

        // Create set of all properties that match the filter pattern
        final Set<String> filteredPropertyNames = Sets.newHashSet();
        for (final PropertySource<?> propertySource : propertySources) {
            if (propertySource instanceof EnumerablePropertySource) {
                for (final String propertyName : ((EnumerablePropertySource<?>) propertySource).getPropertyNames()) {
                    if (propertyName.startsWith(prefix)) {
                        log.debug("Adding matching property: {}", propertyName);
                        filteredPropertyNames.add(propertyName);
                    } else {
                        log.debug("Ignoring property: {}", propertyName);
                    }
                }
            }
        }

        // Create immutable properties map
        final ImmutableMap.Builder<String, String> propertiesMapBuilder = ImmutableMap.builder();
        for (final String propertyName : filteredPropertyNames) {
            final String propertyValue = environment.getProperty(propertyName);
            final String strippedPropertyName = StringUtils.removeStart(propertyName, prefix);
            if (StringUtils.isBlank(strippedPropertyName) || StringUtils.isBlank(propertyValue)) {
                log.debug("Skipping blank value property: {}", propertyName);
            } else {
                propertiesMapBuilder.put(strippedPropertyName, propertyValue);
            }
        }

        return propertiesMapBuilder.build();
    }