@Override
public void doWork() {
try {
ConsumerRecords<byte[], byte[]> records = consumer.poll(Long.MAX_VALUE);
for (ConsumerRecord<byte[], byte[]> record : records) {
K messageKey = null;
try {
messageKey = this.serializer.deserializeKey(record.key());
} catch (SerializationException e) {
log.error("Failed to deserialize the schema or config key", e);
continue;
}
if (messageKey.equals(noopKey)) {
// If it's a noop, update local offset counter and do nothing else
try {
offsetUpdateLock.lock();
offsetInSchemasTopic = record.offset();
offsetReachedThreshold.signalAll();
} finally {
offsetUpdateLock.unlock();
}
} else {
V message = null;
try {
message =
record.value() == null
? null
: serializer.deserializeValue(messageKey, record.value());
} catch (SerializationException e) {
log.error("Failed to deserialize a schema or config update", e);
continue;
}
try {
log.trace(
"Applying update (" + messageKey + "," + message + ") to the local " + "store");
if (message == null) {
localStore.delete(messageKey);
} else {
localStore.put(messageKey, message);
}
this.storeUpdateHandler.handleUpdate(messageKey, message);
try {
offsetUpdateLock.lock();
offsetInSchemasTopic = record.offset();
offsetReachedThreshold.signalAll();
} finally {
offsetUpdateLock.unlock();
}
} catch (StoreException se) {
log.error("Failed to add record from the Kafka topic" + topic + " the local store");
}
}
}
} catch (WakeupException we) {
// do nothing because the thread is closing -- see shutdown()
} catch (RecordTooLargeException rtle) {
throw new IllegalStateException(
"Consumer threw RecordTooLargeException. A schema has been written that "
+ "exceeds the default maximum fetch size.",
rtle);
} catch (RuntimeException e) {
log.error("KafkaStoreReader thread has died for an unknown reason.");
throw new RuntimeException(e);
}
}
public static void main(String[] args) {
staticFileLocation("/public");
String layout = "templates/layout.vtl";
get(
"/",
(request, response) -> {
response.redirect("/stores");
return null;
});
get(
"/stores",
(request, response) -> {
HashMap<String, Object> model = new HashMap<String, Object>();
model.put("stores", Store.all());
model.put("template", "templates/stores.vtl");
return new ModelAndView(model, layout);
},
new VelocityTemplateEngine());
get(
"/stores/:id",
(request, response) -> {
HashMap<String, Object> model = new HashMap<String, Object>();
model.put("store", Store.find(Integer.parseInt(request.params("id"))));
model.put("brands", Brand.all());
model.put("template", "templates/store.vtl");
return new ModelAndView(model, layout);
},
new VelocityTemplateEngine());
post(
"/stores/addstore",
(request, response) -> {
Store store = new Store(request.queryParams("store-name"));
store.save();
response.redirect("/stores/" + store.getId());
return null;
});
post(
"/stores/:id/addbrand",
(request, response) -> {
Store store = Store.find(Integer.parseInt(request.queryParams("addbrand-store-id")));
store.add(Integer.parseInt(request.queryParams("addbrand-brand-id")));
response.redirect("/stores/" + store.getId());
return null;
});
post(
"/stores/:id/unlinkbrand",
(request, response) -> {
Store store = Store.find(Integer.parseInt(request.params("id")));
store.unlink(Integer.parseInt(request.queryParams("unlink-brand")));
response.redirect("/stores/" + store.getId());
return null;
});
post(
"/stores/:id/update",
(request, response) -> {
Store store = Store.find(Integer.parseInt(request.params("id")));
store.update(request.queryParams("update-store-name"));
response.redirect("/stores/" + store.getId());
return null;
});
post(
"/stores/deletestore",
(request, response) -> {
Store store = Store.find(Integer.parseInt(request.queryParams("store-id")));
store.delete();
response.redirect("/stores");
return null;
});
get(
"/brands",
(request, response) -> {
HashMap<String, Object> model = new HashMap<String, Object>();
model.put("template", "templates/brands.vtl");
model.put("brands", Brand.all());
return new ModelAndView(model, layout);
},
new VelocityTemplateEngine());
get(
"/brands/:id",
(request, response) -> {
HashMap<String, Object> model = new HashMap<String, Object>();
model.put("brand", Brand.find(Integer.parseInt(request.params("id"))));
model.put("stores", Store.all());
model.put("template", "templates/brand.vtl");
return new ModelAndView(model, layout);
},
new VelocityTemplateEngine());
post(
"/brands/addbrand",
(request, response) -> {
Brand brand = new Brand(request.queryParams("brand-name"));
brand.save();
response.redirect("/brands/" + brand.getId());
return null;
});
post(
"/brands/:id/addstore",
(request, response) -> {
Brand brand = Brand.find(Integer.parseInt(request.queryParams("addstore-brand-id")));
brand.add(Integer.parseInt(request.queryParams("addstore-store-id")));
response.redirect("/brands/" + brand.getId());
return null;
});
post(
"/brands/:id/unlinkstore",
(request, response) -> {
Brand brand = Brand.find(Integer.parseInt(request.params("id")));
brand.unlink(Integer.parseInt(request.queryParams("unlink-store")));
response.redirect("/brands/" + brand.getId());
return null;
});
post(
"/brands/:id/update",
(request, response) -> {
Brand brand = Brand.find(Integer.parseInt(request.params("id")));
brand.update(request.queryParams("update-brand-name"));
response.redirect("/brands/" + brand.getId());
return null;
});
post(
"/brands/deletebrand",
(request, response) -> {
Brand brand = Brand.find(Integer.parseInt(request.queryParams("brand-id")));
brand.delete();
response.redirect("/brands");
return null;
});
}