Examples of com.google.common.util.concurrent.TimeLimiter

Package com.google.common.util.concurrent

Examples of com.google.common.util.concurrent.TimeLimiter

com.google.common.util.concurrent.TimeLimiter
Produces proxies that impose a time limit on method calls to the proxied object. For example, to return the value of {@code target.someMethod()}, but substitute {@code DEFAULT_VALUE} if thismethod call takes over 50 ms, you can use this code:
```
 TimeLimiter limiter = . . .; TargetType proxy = limiter.newProxy( target, TargetType.class, 50, TimeUnit.MILLISECONDS); try { return proxy.someMethod(); } catch (UncheckedTimeoutException e) { return DEFAULT_VALUE; } 
```
Please see {@code SimpleTimeLimiterTest} for more usage examples. @author Kevin Bourrillion @since Guava release 01

            connection.setCatalog(query.getCatalog());
            connection.setSchema(query.getSchema());
            long start = System.nanoTime();


            try (Statement statement = connection.createStatement()) {
                TimeLimiter limiter = new SimpleTimeLimiter();
                Stopwatch stopwatch = Stopwatch.createStarted();
                Statement limitedStatement = limiter.newProxy(statement, Statement.class, timeout.toMillis(), TimeUnit.MILLISECONDS);
                try (final ResultSet resultSet = limitedStatement.executeQuery(query.getQuery())) {
                    List<List<Object>> results = limiter.callWithTimeout(getResultSetConverter(resultSet), timeout.toMillis() - stopwatch.elapsed(TimeUnit.MILLISECONDS), TimeUnit.MILLISECONDS, true);
                    return new QueryResult(State.SUCCESS, null, nanosSince(start), results);
                }
                catch (AssertionError e) {
                    if (e.getMessage().startsWith("unimplemented type:")) {
                        return new QueryResult(State.INVALID, null, null, ImmutableList.<List<Object>>of());

View Full Code Here

        try (Connection connection = DriverManager.getConnection(url, username, password)) {
            trySetConnectionProperties(query, connection);
            long start = System.nanoTime();


            try (Statement statement = connection.createStatement()) {
                TimeLimiter limiter = new SimpleTimeLimiter();
                Stopwatch stopwatch = Stopwatch.createStarted();
                Statement limitedStatement = limiter.newProxy(statement, Statement.class, timeout.toMillis(), TimeUnit.MILLISECONDS);
                try (final ResultSet resultSet = limitedStatement.executeQuery(query.getQuery())) {
                    List<List<Object>> results = limiter.callWithTimeout(getResultSetConverter(resultSet), timeout.toMillis() - stopwatch.elapsed(TimeUnit.MILLISECONDS), TimeUnit.MILLISECONDS, true);
                    return new QueryResult(State.SUCCESS, null, nanosSince(start), results);
                }
                catch (AssertionError e) {
                    if (e.getMessage().startsWith("unimplemented type:")) {
                        return new QueryResult(State.INVALID, null, null, ImmutableList.<List<Object>>of());

View Full Code Here

        try (Connection connection = DriverManager.getConnection(url, username, password)) {
            trySetConnectionProperties(query, connection);
            long start = System.nanoTime();


            try (Statement statement = connection.createStatement()) {
                TimeLimiter limiter = new SimpleTimeLimiter();
                Stopwatch stopwatch = Stopwatch.createStarted();
                Statement limitedStatement = limiter.newProxy(statement, Statement.class, timeout.toMillis(), TimeUnit.MILLISECONDS);
                try (final ResultSet resultSet = limitedStatement.executeQuery(query.getQuery())) {
                    List<List<Object>> results = limiter.callWithTimeout(getResultSetConverter(resultSet), timeout.toMillis() - stopwatch.elapsed(TimeUnit.MILLISECONDS), TimeUnit.MILLISECONDS, true);
                    return new QueryResult(State.SUCCESS, null, nanosSince(start), results);
                }
                catch (AssertionError e) {
                    if (e.getMessage().startsWith("unimplemented type:")) {
                        return new QueryResult(State.INVALID, null, null, ImmutableList.<List<Object>>of());

View Full Code Here


        svm_problem problem = toSvmProblem(dataset);


        ExecutorService service = newCachedThreadPool(threadsNamed("libsvm-trainer-" + System.identityHashCode(this) + "-%d"));
        try {
            TimeLimiter limiter = new SimpleTimeLimiter(service);
            //TODO: this time limit should be configurable
            model = limiter.callWithTimeout(getTrainingFunction(problem, params), 1, TimeUnit.HOURS, true);
        }
        catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            throw Throwables.propagate(e);
        }

View Full Code Here

            connection.setCatalog(query.getCatalog());
            connection.setSchema(query.getSchema());
            long start = System.nanoTime();


            try (Statement statement = connection.createStatement()) {
                TimeLimiter limiter = new SimpleTimeLimiter();
                Stopwatch stopwatch = Stopwatch.createStarted();
                Statement limitedStatement = limiter.newProxy(statement, Statement.class, timeout.toMillis(), TimeUnit.MILLISECONDS);
                try (final ResultSet resultSet = limitedStatement.executeQuery(query.getQuery())) {
                    List<List<Object>> results = limiter.callWithTimeout(getResultSetConverter(resultSet), timeout.toMillis() - stopwatch.elapsed(TimeUnit.MILLISECONDS), TimeUnit.MILLISECONDS, true);
                    return new QueryResult(State.SUCCESS, null, nanosSince(start), results);
                }
                catch (AssertionError e) {
                    if (e.getMessage().startsWith("unimplemented type:")) {
                        return new QueryResult(State.INVALID, null, null, ImmutableList.<List<Object>>of());

View Full Code Here

            connection.setCatalog(query.getCatalog());
            connection.setSchema(query.getSchema());
            long start = System.nanoTime();


            try (Statement statement = connection.createStatement()) {
                TimeLimiter limiter = new SimpleTimeLimiter();
                Stopwatch stopwatch = Stopwatch.createStarted();
                Statement limitedStatement = limiter.newProxy(statement, Statement.class, timeout.toMillis(), TimeUnit.MILLISECONDS);
                try (final ResultSet resultSet = limitedStatement.executeQuery(query.getQuery())) {
                    List<List<Object>> results = limiter.callWithTimeout(getResultSetConverter(resultSet), timeout.toMillis() - stopwatch.elapsed(TimeUnit.MILLISECONDS), TimeUnit.MILLISECONDS, true);
                    return new QueryResult(State.SUCCESS, null, nanosSince(start), results);
                }
                catch (AssertionError e) {
                    if (e.getMessage().startsWith("unimplemented type:")) {
                        return new QueryResult(State.INVALID, null, null, ImmutableList.<List<Object>>of());

View Full Code Here

            connection.setCatalog(query.getCatalog());
            connection.setSchema(query.getSchema());
            long start = System.nanoTime();


            try (Statement statement = connection.createStatement()) {
                TimeLimiter limiter = new SimpleTimeLimiter();
                Stopwatch stopwatch = Stopwatch.createStarted();
                Statement limitedStatement = limiter.newProxy(statement, Statement.class, timeout.toMillis(), TimeUnit.MILLISECONDS);
                try (final ResultSet resultSet = limitedStatement.executeQuery(query.getQuery())) {
                    List<List<Object>> results = limiter.callWithTimeout(getResultSetConverter(resultSet), timeout.toMillis() - stopwatch.elapsed(TimeUnit.MILLISECONDS), TimeUnit.MILLISECONDS, true);
                    return new QueryResult(State.SUCCESS, null, nanosSince(start), results);
                }
                catch (AssertionError e) {
                    if (e.getMessage().startsWith("unimplemented type:")) {
                        return new QueryResult(State.INVALID, null, null, ImmutableList.<List<Object>>of());

View Full Code Here

            connection.setCatalog(query.getCatalog());
            connection.setSchema(query.getSchema());
            long start = System.nanoTime();


            try (Statement statement = connection.createStatement()) {
                TimeLimiter limiter = new SimpleTimeLimiter();
                Stopwatch stopwatch = Stopwatch.createStarted();
                Statement limitedStatement = limiter.newProxy(statement, Statement.class, timeout.toMillis(), TimeUnit.MILLISECONDS);
                try (final ResultSet resultSet = limitedStatement.executeQuery(query.getQuery())) {
                    List<List<Object>> results = limiter.callWithTimeout(getResultSetConverter(resultSet), timeout.toMillis() - stopwatch.elapsed(TimeUnit.MILLISECONDS), TimeUnit.MILLISECONDS, true);
                    return new QueryResult(State.SUCCESS, null, nanosSince(start), results);
                }
                catch (AssertionError e) {
                    if (e.getMessage().startsWith("unimplemented type:")) {
                        return new QueryResult(State.INVALID, null, null, ImmutableList.<List<Object>>of());

View Full Code Here


        svm_problem problem = toSvmProblem(dataset);


        ExecutorService service = Executors.newCachedThreadPool(Threads.threadsNamed("libsvm-trainer-" + System.identityHashCode(this) + "-%d"));
        try {
            TimeLimiter limiter = new SimpleTimeLimiter(service);
            //TODO: this time limit should be configurable
            model = limiter.callWithTimeout(getTrainingFunction(problem, params), 1, TimeUnit.HOURS, true);
        }
        catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            throw Throwables.propagate(e);
        }

View Full Code Here

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