List of usage examples for io.vertx.core Future future
future
From source file:org.eclipse.hono.deviceregistry.FileBasedCredentialsService.java
License:Open Source License
@Override protected void doStop(final Future<Void> stopFuture) { if (running) { Future<Void> stopTracker = Future.future(); stopTracker.setHandler(stopAttempt -> { running = false;//from w w w . j a v a 2 s. co m stopFuture.complete(); }); if (getConfig().isSaveToFile()) { saveToFile(stopTracker); } else { stopTracker.complete(); } } else { stopFuture.complete(); } }
From source file:org.eclipse.hono.deviceregistry.FileBasedRegistrationService.java
License:Open Source License
@Override protected void doStart(Future<Void> startFuture) { if (!running) { if (!getConfig().isModificationEnabled()) { log.info("modification of registered devices has been disabled"); }// www .j a v a 2 s. c o m if (getConfig().getFilename() != null) { loadRegistrationData().compose(s -> { if (getConfig().isSaveToFile()) { log.info("saving device identities to file every 3 seconds"); vertx.setPeriodic(3000, saveIdentities -> { saveToFile(Future.future()); }); } else { log.info("persistence is disabled, will not save device identities to file"); } running = true; startFuture.complete(); }, startFuture); } else { startFuture.complete(); } } else { startFuture.complete(); } }
From source file:org.eclipse.hono.deviceregistry.FileBasedRegistrationService.java
License:Open Source License
Future<Void> loadRegistrationData() {
Future<Void> result = Future.future();
if (getConfig().getFilename() == null) {
result.fail(new IllegalStateException("device identity filename is not set"));
} else {/* www. j a v a 2 s .c o m*/
final FileSystem fs = vertx.fileSystem();
log.debug("trying to load device registration information from file {}", getConfig().getFilename());
if (fs.existsBlocking(getConfig().getFilename())) {
final AtomicInteger deviceCount = new AtomicInteger();
fs.readFile(getConfig().getFilename(), readAttempt -> {
if (readAttempt.succeeded()) {
JsonArray allObjects = new JsonArray(new String(readAttempt.result().getBytes()));
for (Object obj : allObjects) {
JsonObject tenant = (JsonObject) obj;
String tenantId = tenant.getString(FIELD_TENANT);
log.debug("loading devices for tenant [{}]", tenantId);
Map<String, JsonObject> deviceMap = new HashMap<>();
for (Object deviceObj : tenant.getJsonArray(ARRAY_DEVICES)) {
JsonObject device = (JsonObject) deviceObj;
String deviceId = device.getString(FIELD_DEVICE_ID);
log.debug("loading device [{}]", deviceId);
deviceMap.put(deviceId, device.getJsonObject(FIELD_DATA));
deviceCount.incrementAndGet();
}
identities.put(tenantId, deviceMap);
}
log.info("successfully loaded {} device identities from file [{}]", deviceCount.get(),
getConfig().getFilename());
result.complete();
} else {
log.warn("could not load device identities from file [{}]", getConfig().getFilename());
result.fail(readAttempt.cause());
}
});
} else {
log.debug("device identity file [{}] does not exist (yet)", getConfig().getFilename());
result.complete();
}
}
return result;
}
From source file:org.eclipse.hono.deviceregistry.FileBasedTenantService.java
License:Open Source License
Future<Void> loadTenantData() {
if (getConfig().getFilename() == null) {
return Future.succeededFuture();
} else {//from w w w.j av a2s .c om
final Future<Buffer> readResult = Future.future();
vertx.fileSystem().readFile(getConfig().getFilename(), readResult.completer());
return readResult.compose(buffer -> {
return addAll(buffer);
}).recover(t -> {
log.debug("cannot load tenants from file [{}]: {}", getConfig().getFilename(), t.getMessage());
return Future.succeededFuture();
});
}
}
From source file:org.eclipse.hono.deviceregistry.FileBasedTenantService.java
License:Open Source License
private Future<Void> checkFileExists(final boolean createIfMissing) { final Future<Void> result = Future.future(); if (getConfig().getFilename() == null) { result.fail("no filename set"); } else if (vertx.fileSystem().existsBlocking(getConfig().getFilename())) { result.complete();/* w w w.ja v a2 s .c o m*/ } else if (createIfMissing) { vertx.fileSystem().createFile(getConfig().getFilename(), result.completer()); } else { log.debug("no such file [{}]", getConfig().getFilename()); result.complete(); } return result; }
From source file:org.eclipse.hono.deviceregistry.FileBasedTenantService.java
License:Open Source License
private Future<Void> addAll(final Buffer tenantsBuffer) { final Future<Void> result = Future.future(); try {/* w w w. j ava 2 s . c o m*/ if (tenantsBuffer.length() > 0) { int tenantCount = 0; final JsonArray allObjects = tenantsBuffer.toJsonArray(); for (final Object obj : allObjects) { if (JsonObject.class.isInstance(obj)) { tenantCount++; addTenant((JsonObject) obj); } } log.info("successfully loaded {} tenants from file [{}]", tenantCount, getConfig().getFilename()); } result.complete(); } catch (final DecodeException e) { log.warn("cannot read malformed JSON from tenants file [{}]", getConfig().getFilename()); result.fail(e); } return result; }
From source file:org.eclipse.hono.deviceregistry.FileBasedTenantService.java
License:Open Source License
Future<Void> saveToFile() {
if (!getConfig().isSaveToFile()) {
return Future.succeededFuture();
} else if (dirty) {
return checkFileExists(true).compose(s -> {
final JsonArray tenantsJson = new JsonArray();
tenants.values().stream().forEach(tenant -> {
tenantsJson.add(JsonObject.mapFrom(tenant));
});/*w w w . j av a2 s . c om*/
final Future<Void> writeHandler = Future.future();
vertx.fileSystem().writeFile(getConfig().getFilename(),
Buffer.factory.buffer(tenantsJson.encodePrettily()), writeHandler.completer());
return writeHandler.map(ok -> {
dirty = false;
log.trace("successfully wrote {} tenants to file {}", tenantsJson.size(),
getConfig().getFilename());
return (Void) null;
}).otherwise(t -> {
log.warn("could not write tenants to file {}", getConfig().getFilename(), t);
return (Void) null;
});
});
} else {
log.trace("tenants registry does not need to be persisted");
return Future.succeededFuture();
}
}
From source file:org.eclipse.hono.example.ExampleReceiver.java
License:Open Source License
@PostConstruct private void start() { final Future<MessageConsumer> startupTracker = Future.future(); startupTracker.setHandler(startup -> { if (startup.succeeded()) { String consumerType = activeProfiles.contains(PROFILE_EVENT) ? PROFILE_EVENT : PROFILE_TELEMETRY; LOG.info("Receiver [tenant: {}, type: {}] created successfully, hit ctrl-c to exit", tenantId, consumerType);/*from w w w. j ava 2 s . c om*/ } else { LOG.error("Error occurred during initialization of receiver: {}", startup.cause().getMessage()); vertx.close(); } }); final Future<HonoClient> connectionTracker = Future.future(); client.connect(getClientOptions(), connectionTracker.completer(), this::onDisconnect); connectionTracker.compose(honoClient -> { onConnectionEstablished(startupTracker.completer()); }, startupTracker); }
From source file:org.eclipse.hono.example.ExampleSender.java
License:Open Source License
/** * Connects to the Hono server./*from w w w . j a v a 2 s. c om*/ */ @PostConstruct public void prepare() { LOG.info("starting sender"); final CountDownLatch startup = new CountDownLatch(1); ctx = vertx.getOrCreateContext(); final Future<RegistrationResult> startupTracker = Future.future(); startupTracker.setHandler(done -> { if (done.succeeded()) { startup.countDown(); } else { LOG.error("Error occurred during initialization: {}", done.cause().getMessage()); } }); ctx.runOnContext(go -> { /* step 1: connect Hono client */ final Future<HonoClient> connectionTracker = Future.future(); client.connect(getClientOptions(), connectionTracker.completer()); connectionTracker.compose(v -> { /* step 2: create a registration client */ return getRegistrationClient(); }).compose(regClient -> { /* step 3: register a device */ Future<RegistrationResult> regResultTracker = Future.future(); regClient.register(deviceId, null, regResultTracker.completer()); return regResultTracker; }).compose(regResult -> { /* step 4: handle result of registration */ if (regResult.getStatus() == HTTP_CREATED || regResult.getStatus() == HTTP_CONFLICT) { LOG.info("device registered"); startupTracker.complete(); } else { startupTracker.fail(String.format("Failed to register device [%s]: %s", deviceId, regResult)); } }, startupTracker); }); try { if (!startup.await(5, TimeUnit.SECONDS)) { LOG.error("shutting down"); vertx.close(); } } catch (InterruptedException e) { // nothing to do } }
From source file:org.eclipse.hono.example.ExampleSender.java
License:Open Source License
/** * Reads user input from the console and sends it to the Hono server. *//*from www .j av a2 s . c o m*/ @EventListener(classes = { ApplicationReadyEvent.class }) public void readMessagesFromStdin() { Runnable reader = new Runnable() { public void run() { try { // give Spring Boot some time to log its startup messages Thread.sleep(50); } catch (InterruptedException e) { } LOG.info("sender for tenant [{}] created successfully", tenantId); LOG.info("Enter some message(s) (hit return to send, ctrl-c to quit)"); String input; Scanner scanner = new Scanner(System.in); do { input = scanner.nextLine(); final String msg = input; if (!msg.isEmpty()) { final Map<String, Object> properties = new HashMap<>(); properties.put("my_prop_string", "I'm a string"); properties.put("my_prop_int", 10); final CountDownLatch latch = new CountDownLatch(1); Future<Boolean> sendTracker = Future.future(); sendTracker.setHandler(s -> { if (s.failed()) { LOG.info(s.cause().getMessage()); } }); getRegistrationAssertion().compose(token -> { return send(msg, properties, token); }).compose(sent -> { latch.countDown(); sendTracker.complete(); }, sendTracker); try { if (!latch.await(2, TimeUnit.SECONDS)) { sendTracker.fail("cannot connect to server"); } } catch (InterruptedException e) { // nothing to do } } } while (!input.isEmpty()); scanner.close(); }; }; new Thread(reader).start(); }