zdm/envoy
zdm/envoy
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Fix write proxy initialization

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This commit is contained in:
Kai S. K. Engelbart 2020-09-02 09:51:08 +02:00
parent efbca9cbc9
commit 8b204b3715
4 changed files with 27 additions and 54 deletions
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6
client/src/main/java/envoy/client/data/Cache.java
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@ -51,12 +51,6 @@ public final class Cache<T> implements Consumer<T>, Serializable {
*/
public void setProcessor(Consumer<T> processor) { this.processor = processor; }
/**
* @return the processor
* @since Envoy Client v0.2-beta
*/
public Consumer<T> getProcessor() { return processor; }
/**
* Relays all cached elements to the processor.
*

33
client/src/main/java/envoy/client/data/Context.java
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@ -18,24 +18,33 @@ import envoy.client.ui.SceneContext;
*/
public class Context {
private WriteProxy writeProxy;
private LocalDB localDB;
private Stage stage;
private SceneContext sceneContext;
private final Client client = new Client();
private WriteProxy writeProxy;
private LocalDB localDB;
private Stage stage;
private SceneContext sceneContext;
private static final Context instance = new Context();
private Context() {}
/**
* @return the instance of {@code Context} used throughout Envoy
* @since Envoy Client v0.2-beta
*/
public static Context getInstance() { return instance; }
/**
* Initializes the write proxy given that {@code localDB} is initialized.
*
* @since Envoy Client v0.2-beta
*/
public void initWriteProxy() {
if (localDB == null) throw new IllegalStateException("The LocalDB has to be initialized!");
writeProxy = new WriteProxy(client, localDB);
}
/**
* @return the localDB
* @since Envoy Client v0.2-beta
@ -81,14 +90,6 @@ public class Context {
*/
public Stage getStage() { return stage; }
private Context() {}
/**
* @param writeProxy the writeProxy to set
* @since Envoy Client v0.2-beta
*/
public void setWriteProxy(WriteProxy writeProxy) { this.writeProxy = writeProxy; }
/**
* @param stage the stage to set
* @since Envoy Client v0.2-beta

39
client/src/main/java/envoy/client/net/WriteProxy.java
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@ -5,7 +5,6 @@ import java.util.logging.Level;
import java.util.logging.Logger;
import envoy.client.data.Cache;
import envoy.client.data.Context;
import envoy.client.data.LocalDB;
import envoy.data.Message;
import envoy.event.MessageStatusChange;
@ -25,8 +24,8 @@ import envoy.util.EnvoyLog;
*/
public final class WriteProxy {
private final Client client = Context.getInstance().getClient();
private final LocalDB localDB = Context.getInstance().getLocalDB();
private final Client client;
private final LocalDB localDB;
private static final Logger logger = EnvoyLog.getLogger(WriteProxy.class);
@ -34,9 +33,14 @@ public final class WriteProxy {
* Initializes a write proxy using a client and a local database. The
* corresponding cache processors are injected into the caches.
*
* @param client the client instance used to send messages and events if online
* @param localDB the local database used to cache messages and events if
* offline
* @since Envoy Client v0.3-alpha
*/
public WriteProxy() {
public WriteProxy(Client client, LocalDB localDB) {
this.client = client;
this.localDB = localDB;
// Initialize cache processors for messages and message status change events
localDB.getCacheMap().get(Message.class).setProcessor(msg -> {
@ -63,32 +67,7 @@ public final class WriteProxy {
*
* @since Envoy Client v0.3-alpha
*/
public void flushCache() {
// supplying default values if not initialized - for some reason these
// processors can be not defined...
final var messageCache = localDB.getCacheMap().get(Message.class);
if (messageCache.getProcessor() == null) messageCache.setProcessor(msg -> {
try {
logger.log(Level.FINER, "Sending cached " + msg);
client.sendMessage(msg);
} catch (final IOException e) {
logger.log(Level.SEVERE, "Could not send cached message: ", e);
}
});
final var messageStatusCache = localDB.getCacheMap().get(MessageStatusChange.class);
if (messageStatusCache.getProcessor() == null) messageStatusCache.setProcessor(evt -> {
logger.log(Level.FINER, "Sending cached " + evt);
try {
client.sendEvent(evt);
} catch (final IOException e) {
logger.log(Level.SEVERE, "Could not send cached message status change event: ", e);
}
});
// sending these solely local objects to the server
localDB.getCacheMap().getMap().values().forEach(Cache::relay);
}
public void flushCache() { localDB.getCacheMap().getMap().values().forEach(Cache::relay); }
/**
* Delivers a message to the server if online. Otherwise the message is cached

3
client/src/main/java/envoy/client/ui/Startup.java
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@ -15,7 +15,6 @@ import javafx.stage.Stage;
import envoy.client.data.*;
import envoy.client.net.Client;
import envoy.client.net.WriteProxy;
import envoy.client.ui.SceneContext.SceneInfo;
import envoy.client.ui.controller.LoginScene;
import envoy.data.*;
@ -91,7 +90,6 @@ public final class Startup extends Application {
final var sceneContext = new SceneContext(stage);
context.setSceneContext(sceneContext);
context.setWriteProxy(new WriteProxy());
// Perform automatic login if configured
if (config.hasLoginCredentials())
@ -174,6 +172,7 @@ public final class Startup extends Application {
try {
localDB.initializeUserStorage();
localDB.loadUserData();
context.initWriteProxy();
} catch (final FileNotFoundException e) {
// The local database file has not yet been created, probably first login
} catch (final Exception e) {