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App.java
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App.java
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package vertx;
import com.fizzed.rocker.ContentType;
import com.fizzed.rocker.RockerOutputFactory;
import io.netty.util.concurrent.MultithreadEventExecutorGroup;
import io.vertx.core.impl.VertxInternal;
import io.vertx.pgclient.*;
import io.vertx.core.*;
import io.vertx.core.buffer.Buffer;
import io.vertx.core.http.HttpHeaders;
import io.vertx.core.http.HttpServer;
import io.vertx.core.http.HttpServerOptions;
import io.vertx.core.http.HttpServerRequest;
import io.vertx.core.http.HttpServerResponse;
import io.vertx.core.json.JsonArray;
import io.vertx.core.json.JsonObject;
import io.vertx.core.logging.Logger;
import io.vertx.core.logging.LoggerFactory;
import io.vertx.sqlclient.*;
import io.vertx.sqlclient.impl.SqlClientInternal;
import vertx.model.CachedWorld;
import vertx.model.Fortune;
import vertx.model.Message;
import vertx.model.World;
import vertx.model.WorldCache;
import vertx.rocker.BufferRockerOutput;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.ThreadLocalRandom;
import java.util.stream.Collectors;
public class App extends AbstractVerticle implements Handler<HttpServerRequest> {
/**
* Returns the value of the "queries" getRequest parameter, which is an integer
* bound between 1 and 500 with a default value of 1.
*
* @param request the current HTTP request
* @return the value of the "queries" parameter
*/
static int getQueries(HttpServerRequest request) {
String param = request.getParam("queries");
if (param == null) {
return 1;
}
try {
int parsedValue = Integer.parseInt(param);
return Math.min(500, Math.max(1, parsedValue));
} catch (NumberFormatException e) {
return 1;
}
}
static Logger logger = LoggerFactory.getLogger(App.class.getName());
private static final String PATH_PLAINTEXT = "/plaintext";
private static final String PATH_JSON = "/json";
private static final String PATH_DB = "/db";
private static final String PATH_QUERIES = "/queries";
private static final String PATH_UPDATES = "/updates";
private static final String PATH_FORTUNES = "/fortunes";
private static final String PATH_CACHING = "/cached-queries";
private static final Handler<AsyncResult<Void>> NULL_HANDLER = null;
private static final CharSequence RESPONSE_TYPE_PLAIN = HttpHeaders.createOptimized("text/plain");
private static final CharSequence RESPONSE_TYPE_HTML = HttpHeaders.createOptimized("text/html; charset=UTF-8");
private static final CharSequence RESPONSE_TYPE_JSON = HttpHeaders.createOptimized("application/json");
private static final String HELLO_WORLD = "Hello, world!";
private static final Buffer HELLO_WORLD_BUFFER = Buffer.buffer(HELLO_WORLD, "UTF-8");
private static final CharSequence HEADER_SERVER = HttpHeaders.createOptimized("server");
private static final CharSequence HEADER_DATE = HttpHeaders.createOptimized("date");
private static final CharSequence HEADER_CONTENT_TYPE = HttpHeaders.createOptimized("content-type");
private static final CharSequence HEADER_CONTENT_LENGTH = HttpHeaders.createOptimized("content-length");
private static final CharSequence HELLO_WORLD_LENGTH = HttpHeaders.createOptimized("" + HELLO_WORLD.length());
private static final CharSequence SERVER = HttpHeaders.createOptimized("vert.x");
private static final String UPDATE_WORLD = "UPDATE world SET randomnumber=$1 WHERE id=$2";
private static final String SELECT_WORLD = "SELECT id, randomnumber from WORLD where id=$1";
private static final String SELECT_FORTUNE = "SELECT id, message from FORTUNE";
private static final String SELECT_WORLDS = "SELECT id, randomnumber from WORLD";
private HttpServer server;
private SqlClientInternal client1;
private SqlClientInternal client2;
private CharSequence dateString;
private CharSequence[] plaintextHeaders;
private final RockerOutputFactory<BufferRockerOutput> factory = BufferRockerOutput.factory(ContentType.RAW);
private Throwable databaseErr;
private PreparedQuery<RowSet<Row>> SELECT_WORLD_QUERY;
private PreparedQuery<SqlResult<List<Fortune>>> SELECT_FORTUNE_QUERY;
private PreparedQuery<RowSet<Row>> UPDATE_WORLD_QUERY;
@SuppressWarnings("unchecked")
private PreparedQuery<RowSet<Row>>[] AGGREGATED_UPDATE_WORLD_QUERY = new PreparedQuery[128];
private WorldCache WORLD_CACHE;
public static CharSequence createDateHeader() {
return HttpHeaders.createOptimized(DateTimeFormatter.RFC_1123_DATE_TIME.format(ZonedDateTime.now()));
}
@Override
public void start(Promise<Void> startPromise) throws Exception {
int port = 8080;
server = vertx.createHttpServer(new HttpServerOptions())
.requestHandler(App.this);
dateString = createDateHeader();
plaintextHeaders = new CharSequence[] {
HEADER_CONTENT_TYPE, RESPONSE_TYPE_PLAIN,
HEADER_SERVER, SERVER,
HEADER_DATE, dateString,
HEADER_CONTENT_LENGTH, HELLO_WORLD_LENGTH };
JsonObject config = config();
vertx.setPeriodic(1000, id -> plaintextHeaders[5] = dateString = createDateHeader());
PgConnectOptions options = new PgConnectOptions();
options.setDatabase(config.getString("database", "hello_world"));
options.setHost(config.getString("host", "tfb-database"));
options.setPort(config.getInteger("port", 5432));
options.setUser(config.getString("username", "benchmarkdbuser"));
options.setPassword(config.getString("password", "benchmarkdbpass"));
options.setCachePreparedStatements(true);
options.setPipeliningLimit(100_000); // Large pipelining means less flushing and we use a single connection anyway
Future<?> clientsInit = initClients(options);
clientsInit
.transform(ar -> {
databaseErr = ar.cause();
return server.listen(port);
})
.<Void>mapEmpty()
.onComplete(startPromise);
}
private Future<?> initClients(PgConnectOptions options) {
Future<?> cf1 = PgConnection.connect(vertx, options)
.flatMap(conn -> {
client1 = (SqlClientInternal) conn;
List<Future<?>> list = new ArrayList<>();
Future<PreparedStatement> f1 = conn.prepare(SELECT_WORLD)
.andThen(onSuccess(ps -> SELECT_WORLD_QUERY = ps.query()));
list.add(f1);
Future<PreparedStatement> f2 = conn.prepare(SELECT_FORTUNE)
.andThen(onSuccess(ps -> {
SELECT_FORTUNE_QUERY = ps.query().
collecting(Collectors.mapping(row -> new Fortune(row.getInteger(0), row.getString(1)), Collectors.toList()));
}));
list.add(f2);
Future<WorldCache> f3 = conn.preparedQuery(SELECT_WORLDS)
.collecting(Collectors.mapping(row -> new CachedWorld(row.getInteger(0), row.getInteger(1)), Collectors.toList()))
.execute()
.map(worlds -> new WorldCache(worlds.value()))
.andThen(onSuccess(wc -> WORLD_CACHE = wc));
list.add(f3);
return Future.join(list);
});
Future<?> cf2 = PgConnection.connect(vertx, options)
.flatMap(conn -> {
client2 = (SqlClientInternal) conn;
List<Future<?>> list = new ArrayList<>();
Future<PreparedStatement> f1 = conn.prepare(UPDATE_WORLD)
.andThen(onSuccess(ps -> UPDATE_WORLD_QUERY = ps.query()));
list.add(f1);
for (int i = 0; i < AGGREGATED_UPDATE_WORLD_QUERY.length; i++) {
int idx = i;
Future<PreparedStatement> fut = conn
.prepare(buildAggregatedUpdateQuery(1 + idx))
.andThen(onSuccess(ps -> AGGREGATED_UPDATE_WORLD_QUERY[idx] = ps.query()));
list.add(fut);
}
return Future.join(list);
});
return Future.join(cf1, cf2);
}
private static String buildAggregatedUpdateQuery(int len) {
StringBuilder sb = new StringBuilder();
sb.append("UPDATE world SET randomNumber = update_data.randomNumber FROM (VALUES");
char sep = ' ';
for (int i = 1;i <= len;i++) {
sb.append(sep).append("($").append(2 * i - 1).append("::int,$").append(2 * i).append("::int)");
sep = ',';
}
sb.append(") AS update_data (id, randomNumber) WHERE world.id = update_data.id");
return sb.toString();
}
private static <T> Handler<AsyncResult<T>> onSuccess(Handler<T> handler) {
return ar -> {
if (ar.succeeded()) {
handler.handle(ar.result());
}
};
}
@Override
public void handle(HttpServerRequest request) {
try {
switch (request.path()) {
case PATH_PLAINTEXT:
handlePlainText(request);
break;
case PATH_JSON:
handleJson(request);
break;
case PATH_DB:
handleDb(request);
break;
case PATH_QUERIES:
new Queries(request).handle();
break;
case PATH_UPDATES:
new Update(request).handle();
break;
case PATH_FORTUNES:
handleFortunes(request);
break;
case PATH_CACHING:
handleCaching(request);
break;
default:
request.response().setStatusCode(404);
request.response().end();
break;
}
} catch (Exception e) {
sendError(request, e);
}
}
@Override
public void stop() {
if (server != null) server.close();
}
private void sendError(HttpServerRequest req, Throwable cause) {
logger.error(cause.getMessage(), cause);
req.response().setStatusCode(500).end();
}
private void handlePlainText(HttpServerRequest request) {
HttpServerResponse response = request.response();
MultiMap headers = response.headers();
for (int i = 0;i < plaintextHeaders.length; i+= 2) {
headers.add(plaintextHeaders[i], plaintextHeaders[i + 1]);
}
response.end(HELLO_WORLD_BUFFER, NULL_HANDLER);
}
private void handleJson(HttpServerRequest request) {
HttpServerResponse response = request.response();
MultiMap headers = response.headers();
headers
.add(HEADER_CONTENT_TYPE, RESPONSE_TYPE_JSON)
.add(HEADER_SERVER, SERVER)
.add(HEADER_DATE, dateString);
response.end(new Message("Hello, World!").toBuffer(), NULL_HANDLER);
}
/**
* Returns a random integer that is a suitable value for both the {@code id}
* and {@code randomNumber} properties of a world object.
*
* @return a random world number
*/
private static int randomWorld() {
return 1 + ThreadLocalRandom.current().nextInt(10000);
}
private void handleDb(HttpServerRequest req) {
HttpServerResponse resp = req.response();
SELECT_WORLD_QUERY.execute(Tuple.of(randomWorld()), res -> {
if (res.succeeded()) {
RowIterator<Row> resultSet = res.result().iterator();
if (!resultSet.hasNext()) {
resp.setStatusCode(404).end();
return;
}
Row row = resultSet.next();
resp
.putHeader(HttpHeaders.SERVER, SERVER)
.putHeader(HttpHeaders.DATE, dateString)
.putHeader(HttpHeaders.CONTENT_TYPE, RESPONSE_TYPE_JSON)
.end(new World(row.getInteger(0), row.getInteger(1)).toBuffer(), NULL_HANDLER);
} else {
sendError(req, res.cause());
}
});
}
class Queries implements Handler<AsyncResult<RowSet<Row>>> {
boolean failed;
final JsonArray worlds;
final HttpServerRequest req;
final HttpServerResponse resp;
final int queries;
public Queries(HttpServerRequest req) {
int queries = getQueries(req);
this.req = req;
this.resp = req.response();
this.queries = queries;
this.worlds = new JsonArray(new ArrayList<>(queries));
}
private void handle() {
client1.group(c -> {
for (int i = 0; i < queries; i++) {
c.preparedQuery(SELECT_WORLD).execute(Tuple.of(randomWorld()), this);
}
});
}
@Override
public void handle(AsyncResult<RowSet<Row>> ar) {
if (!failed) {
if (ar.failed()) {
failed = true;
sendError(req, ar.cause());
return;
}
// we need a final reference
final Tuple row = ar.result().iterator().next();
worlds.add(new JsonObject().put("id", row.getInteger(0)).put("randomNumber", row.getInteger(1)));
// stop condition
if (worlds.size() == queries) {
resp
.putHeader(HttpHeaders.SERVER, SERVER)
.putHeader(HttpHeaders.DATE, dateString)
.putHeader(HttpHeaders.CONTENT_TYPE, RESPONSE_TYPE_JSON)
.end(worlds.toBuffer(), NULL_HANDLER);
}
}
}
}
class Update {
final HttpServerRequest req;
boolean failed;
int queryCount;
final World[] worlds;
public Update(HttpServerRequest req) {
final int queries = getQueries(req);
this.req = req;
this.worlds = new World[queries];
}
private void handle() {
client1.group(c -> {
PreparedQuery<RowSet<Row>> preparedQuery = c.preparedQuery(SELECT_WORLD);
for (int i = 0; i < worlds.length; i++) {
int id = randomWorld();
int index = i;
preparedQuery.execute(Tuple.of(id), ar2 -> {
if (!failed) {
if (ar2.failed()) {
failed = true;
sendError(req, ar2.cause());
return;
}
worlds[index] = new World(ar2.result().iterator().next().getInteger(0), randomWorld());
if (++queryCount == worlds.length) {
handleUpdates();
}
}
});
}
});
}
void handleUpdates() {
Arrays.sort(worlds);
int len = worlds.length;
if (0 < len && len <= AGGREGATED_UPDATE_WORLD_QUERY.length) {
List<Object> arguments = new ArrayList<>();
for (World world : worlds) {
arguments.add(world.getId());
arguments.add(world.getRandomNumber());
}
Tuple tuple = Tuple.tuple(arguments);
PreparedQuery<RowSet<Row>> query = AGGREGATED_UPDATE_WORLD_QUERY[len - 1];
query.execute(tuple, this::sendResponse);
} else {
List<Tuple> batch = new ArrayList<>();
for (World world : worlds) {
batch.add(Tuple.of(world.getRandomNumber(), world.getId()));
}
UPDATE_WORLD_QUERY.executeBatch(batch, this::sendResponse);
}
}
private void sendResponse(AsyncResult<?> res) {
if (res.failed()) {
sendError(req, res.cause());
return;
}
JsonArray json = new JsonArray();
for (World world : worlds) {
json.add(world);
}
req.response()
.putHeader(HttpHeaders.SERVER, SERVER)
.putHeader(HttpHeaders.DATE, dateString)
.putHeader(HttpHeaders.CONTENT_TYPE, RESPONSE_TYPE_JSON)
.end(json.toBuffer(), NULL_HANDLER);
}
}
private void handleFortunes(HttpServerRequest req) {
SELECT_FORTUNE_QUERY.execute(ar -> {
HttpServerResponse response = req.response();
if (ar.succeeded()) {
SqlResult<List<Fortune>> result = ar.result();
if (result.size() == 0) {
response.setStatusCode(404).end("No results");
return;
}
List<Fortune> fortunes = result.value();
fortunes.add(new Fortune(0, "Additional fortune added at request time."));
Collections.sort(fortunes);
response
.putHeader(HttpHeaders.SERVER, SERVER)
.putHeader(HttpHeaders.DATE, dateString)
.putHeader(HttpHeaders.CONTENT_TYPE, RESPONSE_TYPE_HTML)
.end(FortunesTemplate.template(fortunes).render(factory).buffer(), NULL_HANDLER);
} else {
sendError(req, ar.cause());
}
});
}
private void handleCaching(HttpServerRequest req) {
int count = 1;
try {
String countStr = req.getParam("count");
if (countStr != null) {
count = Integer.parseInt(countStr);
}
} catch (NumberFormatException ignore) {
}
count = Math.max(1, count);
count = Math.min(500, count);
List<CachedWorld> worlds = WORLD_CACHE.getCachedWorld(count);
JsonArray json = new JsonArray(worlds);
HttpServerResponse response = req.response();
MultiMap headers = response.headers();
headers
.add(HEADER_CONTENT_TYPE, RESPONSE_TYPE_JSON)
.add(HEADER_SERVER, SERVER)
.add(HEADER_DATE, dateString);
response.end(json.toBuffer(), NULL_HANDLER);
}
public static void main(String[] args) throws Exception {
int eventLoopPoolSize = Runtime.getRuntime().availableProcessors();
String sizeProp = System.getProperty("vertx.eventLoopPoolSize");
if (sizeProp != null) {
try {
eventLoopPoolSize = Integer.parseInt(sizeProp);
} catch (NumberFormatException e) {
e.printStackTrace();
}
}
JsonObject config = new JsonObject(new String(Files.readAllBytes(new File(args[0]).toPath())));
Vertx vertx = Vertx.vertx(new VertxOptions().setEventLoopPoolSize(eventLoopPoolSize).setPreferNativeTransport(true));
vertx.exceptionHandler(err -> {
err.printStackTrace();
});
printConfig(vertx);
vertx.deployVerticle(App.class.getName(),
new DeploymentOptions().setInstances(eventLoopPoolSize).setConfig(config), event -> {
if (event.succeeded()) {
logger.info("Server listening on port " + 8080);
} else {
logger.error("Unable to start your application", event.cause());
}
});
}
private static void printConfig(Vertx vertx) {
boolean nativeTransport = vertx.isNativeTransportEnabled();
String transport = ((VertxInternal) vertx).transport().getClass().getSimpleName();
String version = "unknown";
try {
InputStream in = Vertx.class.getClassLoader().getResourceAsStream("META-INF/vertx/vertx-version.txt");
if (in == null) {
in = Vertx.class.getClassLoader().getResourceAsStream("vertx-version.txt");
}
ByteArrayOutputStream out = new ByteArrayOutputStream();
byte[] buffer = new byte[256];
while (true) {
int amount = in.read(buffer);
if (amount == -1) {
break;
}
out.write(buffer, 0, amount);
}
version = out.toString();
} catch (IOException e) {
logger.error("Could not read Vertx version", e);;
}
logger.info("Vertx: " + version);
logger.info("Event Loop Size: " + ((MultithreadEventExecutorGroup)vertx.nettyEventLoopGroup()).executorCount());
logger.info("Native transport : " + nativeTransport);
logger.info("Transport : " + transport);
}
}