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com.ddfplus.net.DdfClientImpl Maven / Gradle / Ivy
/**
* Copyright (C) 2004 - 2015 by Barchart.com, Inc. All Rights Reserved.
*
* This software is the proprietary information of Barchart.com, Inc.
* Use is subject to license terms.
*/
package com.ddfplus.net;
import java.net.InetAddress;
import java.util.Date;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArrayList;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.ddfplus.api.BookQuoteHandler;
import com.ddfplus.api.ClientConfig;
import com.ddfplus.api.ConnectionEvent;
import com.ddfplus.api.ConnectionEventHandler;
import com.ddfplus.api.FeedHandler;
import com.ddfplus.api.MarketEventHandler;
import com.ddfplus.api.QuoteHandler;
import com.ddfplus.api.TimestampHandler;
import com.ddfplus.db.BookQuote;
import com.ddfplus.db.CumulativeVolume;
import com.ddfplus.db.DataMaster;
import com.ddfplus.db.FeedEvent;
import com.ddfplus.db.MarketEvent;
import com.ddfplus.db.MasterType;
import com.ddfplus.db.Quote;
import com.ddfplus.enums.ConnectionType;
import com.ddfplus.service.definition.DefinitionService;
import com.ddfplus.service.definition.DefinitionServiceImpl;
import com.ddfplus.service.feed.FeedService;
import com.ddfplus.service.feed.FeedServiceImpl;
import com.ddfplus.service.usersettings.UserSettings;
import com.ddfplus.service.usersettings.UserSettingsService;
import com.ddfplus.service.usersettings.UserSettingsServiceImpl;
/**
* DDF Client API.
*
* To use:
*
*
* Instantiate with proper connection variables.
* Call the init() method.
* Call the connect() method.
* Add subscriptions for quote and book quotes as required.
*
*/
public class DdfClientImpl implements DdfClient {
private static final Logger log = LoggerFactory.getLogger(DdfClientImpl.class);
// Member variables are static, as the intention is keep one active
// DdfClient per VM or ClassLoader instance.
private static Connection connection;
private static final DataMaster dataMaster = new DataMaster(MasterType.Realtime);
private static final CopyOnWriteArrayList adminHandlers = new CopyOnWriteArrayList();
// Raw DDF message handlers
private static final CopyOnWriteArrayList feedHandlers = new CopyOnWriteArrayList();
// Market Event Handlers
private static final CopyOnWriteArrayList marketEventHandlers = new CopyOnWriteArrayList();
// Timestamp Handlers
private static final CopyOnWriteArrayList timestampHandlers = new CopyOnWriteArrayList();
// Quote/Market Update
private static final Map> quoteHandlers = new ConcurrentHashMap>();
// Quote/Market Update by Exchange (ExchangeCode ==> Handler)
private static final Map quoteExchangeHandlers = new ConcurrentHashMap();
// Market Depth/Book Quote
private static final Map> bookQuoteHandlers = new ConcurrentHashMap>();
private static int instanceId = 0;
// Client Configuration
private ClientConfig config;
// Connection parameters
private String host;
private String secondaryHost;
private final ConnectionType type;
// will bind to all interfaces if null
private String bindInterface = null;
private int jerqVersion = NetConstants.JERQ_VERSION_DEFAULT;
// Jerq login credentials
private final String username;
private final String password;
private UserSettings userSettings;
// Jerq Snapshot credentials
private String snapshotUserName;
private String snapshotPassword;
private UserSettings snapshotUserSettings;
private UserSettingsService userSettingsService = new UserSettingsServiceImpl();
// Snapshot via web service
private FeedService feedService;
/*
* TOOD Might be removed. Symbol Provider
*/
private SymbolProvider symbolProvider;
private SymbolShortCuts symbolShortCuts;
private DefinitionService definitionService;
public DdfClientImpl(ClientConfig config, SymbolProvider symbolProvider) {
this.config = config;
this.username = config.getUserName();
this.password = config.getPassword();
if (username == null || password == null) {
throw new IllegalArgumentException("username and password have to be set");
}
this.type = config.getConnectionType();
this.bindInterface = config.getBindInterface();
this.host = config.getPrimaryServer();
this.secondaryHost = config.getSecondaryServer();
this.symbolProvider = symbolProvider;
// Definition Service
definitionService = new DefinitionServiceImpl();
definitionService.init(config.getDefinitionRefreshIntervalSec());
symbolShortCuts = new SymbolShortCutsImpl(definitionService);
}
@Override
public void init() {
if (this.host == null) {
// Look up via user settings
log.info("Looking up user settings for: " + this.username);
userSettings = userSettingsService.getUserSettings(this.username, this.password);
this.host = userSettings.getStreamPrimaryServer();
if (this.host == null) {
throw new IllegalStateException("Could not determine DDF server for user: " + username);
}
} else {
userSettings = new UserSettings();
userSettings.setUserName(this.username);
userSettings.setPassword(this.password);
userSettings.setStreamPrimaryServer(this.host);
userSettings.setStreamSecondaryServer(this.secondaryHost);
}
/*
* For remote snapshot/refresh refreshes when using the "push"/STREAM
* LISTEN commands.
*/
if (snapshotUserName != null && snapshotPassword != null) {
// Look up via user settings
log.info("Looking up snaphot/refresh user settings for: " + snapshotUserName);
snapshotUserSettings = userSettingsService.getUserSettings(snapshotUserName, snapshotPassword);
if (snapshotUserSettings.getStreamPrimaryServer() == null) {
log.warn("Could not determine Snapshot DDF server for user: " + snapshotUserName
+ " will not have snapshots for push quotes.");
}
/*
* Add Feed Service
*/
feedService = new FeedServiceImpl(dataMaster, snapshotUserSettings, quoteExchangeHandlers);
dataMaster.setFeedService(feedService);
}
}
@Override
public void setSnapshotLogin(String username, String password) {
snapshotUserName = username;
snapshotPassword = password;
if (snapshotUserName == null || snapshotPassword == null) {
throw new IllegalArgumentException("snapshot username and password have to be set");
}
}
@Override
public void connect() throws Exception {
synchronized (dataMaster) {
log.info("Trying to connect..");
if (connection != null) {
log.error("connection != null");
return;
}
InetAddress ddfServer = InetAddress.getByName(userSettings.getStreamPrimaryServer());
InetAddress secondaryServer = InetAddress.getByName(userSettings.getStreamSecondaryServer());
if (type == ConnectionType.WS || type == ConnectionType.WSS) {
ddfServer = InetAddress.getByName(userSettings.getWssServer());
}
InetAddress intf = InetAddress.getByName(this.bindInterface);
connection = new Connection(//
this.type, //
this.username, //
this.password, //
ddfServer, //
config.getServerPort() != null ? config.getServerPort() : type.port, //
intf, //
symbolProvider, //
secondaryServer);
// Sets the JERQ/P version
connection.setVersion(jerqVersion);
DdfClientConnectionHandler handler = new DdfClientConnectionHandler();
connection.registerHandler(handler);
log.info("Starting DdfClient#" + ++instanceId + " Version = " + connection.getVersion());
// Start the connection
connection.startDataStream();
}
}
@Override
public void disconnect() {
if (connection != null) {
log.info("Stopping DdfClient#" + ++instanceId + " Version = " + connection.getVersion());
connection.stopDataStream();
}
}
@Override
public void addConnectionEventHandler(ConnectionEventHandler handler) {
adminHandlers.addIfAbsent(handler);
}
@Override
public void removeConnectionEventHandler(ConnectionEventHandler handler) {
adminHandlers.remove(handler);
}
@Override
public void addFeedHandler(FeedHandler handler) {
feedHandlers.addIfAbsent(handler);
}
@Override
public void removeFeedHandler(FeedHandler handler) {
feedHandlers.remove(handler);
}
@Override
public void addMarketEventHandler(MarketEventHandler handler) {
marketEventHandlers.addIfAbsent(handler);
}
@Override
public void removeMarketEventHandler(MarketEventHandler handler) {
marketEventHandlers.remove(handler);
}
@Override
public void addTimestampHandler(TimestampHandler handler) {
timestampHandlers.addIfAbsent(handler);
}
@Override
public void removeTimestampHandler(TimestampHandler handler) {
timestampHandlers.remove(handler);
}
@Override
public void addQuoteHandler(String symbol, QuoteHandler handler) {
String[] realSymbols = symbolShortCuts.resolveShortCutSymbols(symbol.trim());
if (realSymbols.length == 0) {
log.error("Invalid Symbol: " + symbol + " ignoring.");
return;
}
for (String s : realSymbols) {
synchronized (quoteHandlers) {
CopyOnWriteArrayList l = quoteHandlers.get(s);
if (l == null) {
// No subscription
l = new CopyOnWriteArrayList();
quoteHandlers.put(s, l);
l.add(handler);
// Initial Subscription
subscribeQuote(s);
} else {
// We have a subscription
boolean added = l.addIfAbsent(handler);
if (added) {
sendQuoteFromCache(s, handler);
}
}
}
}
}
@Override
public void removeQuoteHandler(String symbol, QuoteHandler handler) {
synchronized (quoteHandlers) {
CopyOnWriteArrayList l = quoteHandlers.get(symbol);
if (l == null) {
return;
}
l.remove(handler);
if (l.size() == 0) {
unsubscribeQuote(symbol);
}
}
}
@Override
public void addBookQuoteHandler(String symbol, BookQuoteHandler handler) {
synchronized (bookQuoteHandlers) {
CopyOnWriteArrayList l = bookQuoteHandlers.get(symbol);
if (l == null) {
// No subscription
l = new CopyOnWriteArrayList();
bookQuoteHandlers.put(symbol, l);
l.add(handler);
// Initial Subscription
subscribeDepth(symbol);
} else {
// We have a subscription
boolean added = l.addIfAbsent(handler);
if (added) {
sendDepthFromCache(symbol, handler);
}
}
}
}
@Override
public void removeBookQuoteHandler(String symbol, BookQuoteHandler handler) {
synchronized (bookQuoteHandlers) {
CopyOnWriteArrayList l = bookQuoteHandlers.get(symbol);
if (l == null) {
return;
}
l.remove(handler);
if (l.size() == 0) {
unsubscribeDepth(symbol);
}
}
}
@Override
public void addQuoteExchangeHandler(String exchangeCode, QuoteHandler handler) {
synchronized (quoteExchangeHandlers) {
QuoteHandler h = quoteExchangeHandlers.get(exchangeCode);
if (h == null) {
// No subscription
quoteExchangeHandlers.put(exchangeCode, handler);
// Initial Stream Subscription
subscribeQuoteExchange(exchangeCode);
} else {
/*
* We already have a subscription and only one Exchange handler
* is allowed.
*/
log.warn(
"An exchange quote subscription was already active, only 1 handler is allowed per exchange, exchange: "
+ exchangeCode);
}
}
}
@Override
public void removeQuoteExchangeHandler(String exchangeCode) {
synchronized (quoteExchangeHandlers) {
quoteExchangeHandlers.remove(exchangeCode);
}
}
@Override
public Quote getQuote(String symbol) {
return dataMaster.getQuote(symbol);
}
@Override
public BookQuote getBookQuote(String symbol) {
return dataMaster.getBookQuote(symbol);
}
@Override
public CumulativeVolume getCumulativeVolume(String symbol) {
return dataMaster.getCumulativeVolume(symbol);
}
public String getUsername() {
return username;
}
public String getPassword() {
return password;
}
public int getJerqVersion() {
return jerqVersion;
}
public void setJerqVersion(int jerqVersion) {
this.jerqVersion = jerqVersion;
}
private void subscribeDepth(String symbol) {
connection.subscribeDepth(symbol);
}
private void unsubscribeDepth(String symbol) {
connection.unsubscribeDepth(symbol);
}
private void sendDepthFromCache(String symbol, BookQuoteHandler handler) {
BookQuote depth = dataMaster.getBookQuote(symbol);
if (depth != null) {
handler.onBookQuote(depth);
}
}
private void subscribeQuote(String symbol) {
connection.subscribeQuote(symbol);
}
private void unsubscribeQuote(String symbol) {
connection.unsubscribeQuote(symbol);
}
private void subscribeQuoteExchange(String exchangeCode) {
connection.subscribeQuoteExchange(exchangeCode);
}
private void sendQuoteFromCache(String symbol, QuoteHandler handler) {
Quote quote = dataMaster.getQuote(symbol);
if (quote != null) {
handler.onQuote(quote);
}
}
/**
* Connection Handler
*/
private class DdfClientConnectionHandler implements ConnectionHandler {
@Override
public void onConnectionEvent(ConnectionEvent event) {
for (ConnectionEventHandler listener : adminHandlers) {
listener.onEvent(event);
}
}
@Override
public void onMessage(byte[] array) {
// Decode and update caches
FeedEvent fe = dataMaster.processMessage(array);
if (fe == null) {
// decode failure
return;
}
// RAW DDF Handlers
if (fe.isDdfMessage()) {
for (FeedHandler h : feedHandlers) {
try {
h.onMessage(fe.getDdfMessage());
} catch (Exception e) {
log.error("DdfClient.onMessage(" + array + ") failed on onMessage. " + e);
}
}
}
// Quote
if (fe.isQuote()) {
Quote q = fe.getQuote();
String symbol = q.getSymbolInfo().getSymbol();
// Quote Handlers for pull (GO command)
CopyOnWriteArrayList handlers = quoteHandlers.get(symbol);
if (handlers != null) {
for (QuoteHandler h : handlers) {
try {
h.onQuote(q);
} catch (Exception e) {
log.error("quote(" + array + ") failed on onMessage. " + e);
}
}
} else {
log.error("Quote handler not found for symbol: " + q.getSymbolInfo().getSymbol() + " msg: "
+ q.getMessage());
}
// Quote Exchange Handler for push (STREAM LISTEN command)
String ddfExchange = q.getDDFExchange();
QuoteHandler eh = quoteExchangeHandlers.get(ddfExchange);
if (eh != null) {
try {
eh.onQuote(q);
} catch (Exception e) {
log.error("exchangeQuote(" + array + ") failed on onMessage. " + e);
}
}
}
// Book/Depth
if (fe.isBookQuote()) {
BookQuote bq = fe.getBook();
CopyOnWriteArrayList handlers = bookQuoteHandlers.get(bq.getSymbol());
if (handlers != null) {
for (BookQuoteHandler h : handlers) {
try {
h.onBookQuote(bq);
} catch (Exception e) {
log.error("bookQuote(" + array + ") failed on onMessage. " + e);
}
}
}
}
// Timestamp
if (fe.isTimestamp()) {
Date ts = fe.getTimestamp();
for (TimestampHandler h : timestampHandlers) {
try {
h.onTimestamp(ts);
} catch (Exception e) {
log.error("timestamp(" + array + ") failed on onMessage. " + e);
}
}
}
// Cumulative Volume
if (fe.isCumVolume()) {
// Do nothing
}
// Market Events
if (fe.isMarketEvents()) {
for (MarketEventHandler h : marketEventHandlers) {
try {
for (MarketEvent e : fe.getMarketEvents()) {
h.onEvent(e);
}
} catch (Exception e) {
log.error("marketEvent(" + array + ") failed on onMessage. " + e);
}
}
}
}
}
}
