@Override
public void persist() {
if (hasUpdate) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
BinaryEncoder encoder = EncoderFactory.get().binaryEncoder(baos, null);
SpecificDatumWriter<Topic> datumWriter = new SpecificDatumWriter<>(Topic.class);
try {
for (Topic topic : topicMap.values()) {
datumWriter.write(topic, encoder);
LOG.info("Persisted {}", topic);
}
encoder.flush();
String base64Str =
new String(base64.encodeBase64(baos.toByteArray()), Charset.forName("UTF-8"));
state.setProperty(TOPIC_LIST, base64Str);
} catch (IOException e) {
LOG.error("Can't persist topic list info", e);
}
baos = new ByteArrayOutputStream();
try (ObjectOutputStream oos = new ObjectOutputStream(baos)) {
oos.writeObject(nfSubscriptions);
String base64Str =
new String(base64.encodeBase64(baos.toByteArray()), Charset.forName("UTF-8"));
state.setProperty(NF_SUBSCRIPTIONS, base64Str);
} catch (IOException e) {
LOG.error("Can't persist notification subscription info", e);
}
StringBuilder attachedEndpointsString = new StringBuilder();
for (Map.Entry<EndpointAccessToken, EndpointKeyHash> attached :
attachedEndpoints.entrySet()) {
attachedEndpointsString
.append(attached.getKey().getToken())
.append(":")
.append(attached.getValue().getKeyHash())
.append(',');
}
state.setProperty(ATTACHED_ENDPOINTS, attachedEndpointsString.toString());
state.setProperty(EVENT_SEQ_NUM, "" + eventSequence.get());
if (topicListHash != null) {
state.setProperty(TOPIC_LIST_HASH, "" + topicListHash);
}
OutputStream os = null;
try {
storage.renameTo(stateFileLocation, stateFileLocation + "_bckp");
os = storage.openForWrite(stateFileLocation);
state.store(os, null);
hasUpdate = false;
} catch (IOException e) {
LOG.error("Can't persist state file", e);
} finally {
IOUtils.closeQuietly(os);
}
}
}
private KeyPair getOrInitKeyPair() {
LOG.debug(
"Check if key pair exists {}, {}",
clientPublicKeyFileLocation,
clientPrivateKeyFileLocation);
if (keyPair != null) {
return keyPair;
}
if (storage.exists(clientPublicKeyFileLocation)
&& storage.exists(clientPrivateKeyFileLocation)) {
InputStream publicKeyInput = null;
InputStream privateKeyInput = null;
try {
publicKeyInput = storage.openForRead(clientPublicKeyFileLocation);
privateKeyInput = storage.openForRead(clientPrivateKeyFileLocation);
PublicKey publicKey = KeyUtil.getPublic(publicKeyInput);
PrivateKey privateKey = KeyUtil.getPrivate(privateKeyInput);
if (publicKey != null && privateKey != null) {
keyPair = new KeyPair(publicKey, privateKey);
if (!KeyUtil.validateKeyPair(keyPair)) {
throw new InvalidKeyException();
}
}
} catch (InvalidKeyException e) {
keyPair = null;
LOG.error("Unable to parse client RSA keypair. Generating new keys.. Reason {}", e);
} catch (Exception e) {
LOG.error("Error loading client RSA keypair. Reason {}", e);
throw new RuntimeException(e); // NOSONAR
} finally {
IOUtils.closeQuietly(publicKeyInput);
IOUtils.closeQuietly(privateKeyInput);
}
}
if (keyPair == null) {
LOG.debug("Generating Client Key pair");
OutputStream privateKeyOutput = null;
OutputStream publicKeyOutput = null;
try {
privateKeyOutput = storage.openForWrite(clientPrivateKeyFileLocation);
publicKeyOutput = storage.openForWrite(clientPublicKeyFileLocation);
keyPair = KeyUtil.generateKeyPair(privateKeyOutput, publicKeyOutput);
} catch (IOException e) {
LOG.error("Error generating Client Key pair", e);
throw new RuntimeException(e);
} finally {
IOUtils.closeQuietly(privateKeyOutput);
IOUtils.closeQuietly(publicKeyOutput);
}
}
return keyPair;
}
public KaaClientPropertiesState(
PersistentStorage storage, Base64 base64, KaaClientProperties properties) {
super();
this.storage = storage;
this.base64 = base64;
properties.setBase64(base64);
stateFileLocation = properties.getStateFileFullName();
clientPrivateKeyFileLocation = properties.getPrivateKeyFileFullName();
clientPublicKeyFileLocation = properties.getPublicKeyFileFullName();
LOG.info(
"Version: '{}', commit hash: '{}'",
properties.getBuildVersion(),
properties.getCommitHash());
state = new Properties();
if (storage.exists(stateFileLocation)) {
InputStream stream = null;
try {
stream = storage.openForRead(stateFileLocation);
state.load(stream);
if (isSDKPropertiesUpdated(properties)) {
LOG.info("SDK properties were updated");
setRegistered(false);
setPropertiesHash(properties.getPropertiesHash());
// TODO: add more intelligent check by comparing part of SDK token.
isConfigVersionUpdated = true;
} else {
LOG.info("SDK properties are up to date");
}
parseTopics();
parseNfSubscriptions();
String attachedEndpointsString = state.getProperty(ATTACHED_ENDPOINTS);
if (attachedEndpointsString != null) {
String[] splittedEndpointsList = attachedEndpointsString.split(",");
for (String attachedEndpoint : splittedEndpointsList) {
if (!attachedEndpoint.isEmpty()) {
String[] splittedValues = attachedEndpoint.split(":");
attachedEndpoints.put(
new EndpointAccessToken(splittedValues[0]),
new EndpointKeyHash(splittedValues[1]));
}
}
}
String eventSeqNumStr = state.getProperty(EVENT_SEQ_NUM);
if (eventSeqNumStr != null) {
Integer eventSeqNum = 0;
try { // NOSONAR
eventSeqNum = Integer.parseInt(eventSeqNumStr);
} catch (NumberFormatException e) {
LOG.error(
"Unexpected exception while parsing event sequence number. Can not parse String: {} to Integer",
eventSeqNumStr);
}
eventSequence.set(eventSeqNum);
}
String topicListHashStr = state.getProperty(TOPIC_LIST_HASH);
if (topicListHashStr != null) {
try { // NOSONAR
this.topicListHash = Integer.parseInt(topicListHashStr);
} catch (NumberFormatException e) {
LOG.error(
"Unexpected exception while parsing topic list hash. Can not parse String: {} to Integer",
topicListHashStr);
}
}
} catch (Exception e) {
LOG.error("Can't load state file", e);
} finally {
IOUtils.closeQuietly(stream);
}
} else {
LOG.info("First SDK start");
setPropertiesHash(properties.getPropertiesHash());
}
}