private void initialize(InputStream regexYaml, boolean disableCache) {
Yaml yaml = new Yaml(new SafeConstructor());
Map<String, List> regexConfig = (Map<String, List>) yaml.load(regexYaml);
List<Map> uaParserConfigs = regexConfig.get("user_agent_parsers");
if (uaParserConfigs == null) {
throw new IllegalArgumentException("user_agent_parsers is missing from yaml");
}
uaParser = UserAgentParser.fromList(uaParserConfigs);
List<Map> osParserConfigs = regexConfig.get("os_parsers");
if (osParserConfigs == null) {
throw new IllegalArgumentException("os_parsers is missing from yaml");
}
osParser = OSParser.fromList(osParserConfigs);
List<Map> deviceParserConfigs = regexConfig.get("device_parsers");
if (deviceParserConfigs == null) {
throw new IllegalArgumentException("device_parsers is missing from yaml");
}
List<String> mobileUAFamiliesList = regexConfig.get("mobile_user_agent_families");
List<String> mobileOSFamiliesList = regexConfig.get("mobile_os_families");
Set<String> mobileUAFamilies =
(mobileUAFamiliesList == null
? Collections.EMPTY_SET
: new HashSet<String>(mobileUAFamiliesList));
Set<String> mobileOSFamilies =
(mobileOSFamiliesList == null
? Collections.EMPTY_SET
: new HashSet<String>(mobileOSFamiliesList));
deviceParser =
DeviceParser.fromList(deviceParserConfigs, uaParser, mobileUAFamilies, mobileOSFamilies);
this.disableCache = disableCache;
if (!disableCache) {
uaCache =
CacheBuilder.newBuilder()
.maximumSize(MAX_CACHE_SIZE)
.initialCapacity(MIN_CACHE_SIZE)
.concurrencyLevel(1)
.build();
}
}
public UserAgent parseUserAgent(String agentString) {
return uaParser.parse(agentString);
}