/**
* Returns ordered intent key from network and two hosts.
*
* @param network network name
* @param one host one
* @param two host two
* @return canonical intent string key
*/
protected Key generateKey(String network, HostId one, HostId two) {
String hosts =
one.toString().compareTo(two.toString()) < 0
? format(HOST_FORMAT, one, two)
: format(HOST_FORMAT, two, one);
return Key.of(format(KEY_FORMAT, network, hosts), appId);
}
/**
* Matches an intent to a network and optional host.
*
* @param network network name
* @param id optional host id, wildcard if missing
* @param intent intent to match
* @return true if intent matches, false otherwise
*/
protected boolean matches(String network, Optional<HostId> id, Intent intent) {
if (!Objects.equals(appId, intent.appId())) {
// different app ids
return false;
}
String key = intent.key().toString();
if (!key.startsWith(network)) {
// different network
return false;
}
if (!id.isPresent()) {
// no host id specified; wildcard match
return true;
}
HostId hostId = id.get();
String[] fields = key.split(",");
// return result of id match in host portion of key
return fields.length > 1 && fields[1].contains(hostId.toString());
}