Examples of com.bazaarvoice.ostrich.HostDiscovery

com.bazaarvoice.ostrich.HostDiscovery
The HostDiscovery class is used to encapsulate the strategy that provides a set of hosts for use. Users of this class shouldn't cache the results of discovery as subclasses can choose to change the set of available hosts based on some external mechanism (ex. using ZooKeeper).

    @VisibleForTesting
    ServicePool<S> buildInternal() {
        checkNotNull(_serviceFactory);
        checkNotNull(_metrics);


        HostDiscovery hostDiscovery = findHostDiscovery(_serviceName);


        boolean shutdownHealthCheckExecutorOnClose = (_healthCheckExecutor == null);


        try {
            if (_cachingPolicy == null) {
                _cachingPolicy = ServiceCachingPolicyBuilder.NO_CACHING;
            }


            if (_healthCheckExecutor == null) {
                _healthCheckExecutor = Executors.newScheduledThreadPool(DEFAULT_NUM_HEALTH_CHECK_THREADS,
                        new ThreadFactoryBuilder()
                                .setNameFormat(_serviceName + "-HealthCheckThread-%d")
                                .setDaemon(true)
                                .build());
            }


            ServicePool<S> servicePool = new ServicePool<>(Ticker.systemTicker(), hostDiscovery, _closeHostDiscovery,
                    _serviceFactory, _cachingPolicy, _partitionFilter, _loadBalanceAlgorithm, _healthCheckExecutor,
                    shutdownHealthCheckExecutorOnClose, _healthCheckRetryDelay, _metrics);


            _closeHostDiscovery = false;


            return servicePool;
        } catch (Throwable t) {
            if (shutdownHealthCheckExecutorOnClose && _healthCheckExecutor != null) {
                _healthCheckExecutor.shutdownNow();
                _healthCheckExecutor = null;
            }


            try {
                if (_closeHostDiscovery) {
                    hostDiscovery.close();
                }
            } catch (IOException e) {
                // NOP
            } finally {
                _closeHostDiscovery = false;

View Full Code Here

        }
    }


    private HostDiscovery findHostDiscovery(String serviceName) {
        for (HostDiscoverySource source : _hostDiscoverySources) {
            HostDiscovery hostDiscovery = source.forService(serviceName);
            if (hostDiscovery != null) {
                return hostDiscovery;
            }
        }
        throw new IllegalStateException(format("No HostDiscovery found for service: %s", serviceName));

View Full Code Here

            _wrappedSource = wrappedSource;
        }


        @Override
        public HostDiscovery forService(String serviceName) {
            HostDiscovery hostDiscovery = _wrappedSource.forService(serviceName);
            if (hostDiscovery != null) {
                _closeHostDiscovery = true;
            }
            return hostDiscovery;
        }

View Full Code Here


    @VisibleForTesting
    ServicePool<S> buildInternal() {
        checkNotNull(_serviceFactory);


        HostDiscovery hostDiscovery = findHostDiscovery(_serviceName);


        boolean shutdownHealthCheckExecutorOnClose = (_healthCheckExecutor == null);


        try {
            if (_cachingPolicy == null) {
                _cachingPolicy = ServiceCachingPolicyBuilder.NO_CACHING;
            }


            if (_healthCheckExecutor == null) {
                _healthCheckExecutor = Executors.newScheduledThreadPool(DEFAULT_NUM_HEALTH_CHECK_THREADS,
                        new ThreadFactoryBuilder()
                                .setNameFormat(_serviceName + "-HealthCheckThread-%d")
                                .setDaemon(true)
                                .build());
            }


            ServicePool<S> servicePool = new ServicePool<S>(Ticker.systemTicker(), hostDiscovery, _closeHostDiscovery,
                    _serviceFactory, _cachingPolicy, _partitionFilter, _loadBalanceAlgorithm, _healthCheckExecutor,
                    shutdownHealthCheckExecutorOnClose);


            _closeHostDiscovery = false;


            return servicePool;
        } catch (Throwable t) {
            if (shutdownHealthCheckExecutorOnClose && _healthCheckExecutor != null) {
                _healthCheckExecutor.shutdownNow();
                _healthCheckExecutor = null;
            }


            try {
                if (_closeHostDiscovery) {
                    hostDiscovery.close();
                }
            } catch (IOException e) {
                // NOP
            } finally {
                _closeHostDiscovery = false;

View Full Code Here

        }
    }


    private HostDiscovery findHostDiscovery(String serviceName) {
        for (HostDiscoverySource source : _hostDiscoverySources) {
            HostDiscovery hostDiscovery = source.forService(serviceName);
            if (hostDiscovery != null) {
                return hostDiscovery;
            }
        }
        throw new IllegalStateException(format("No HostDiscovery found for service: %s", serviceName));

View Full Code Here

            _wrappedSource = wrappedSource;
        }


        @Override
        public HostDiscovery forService(String serviceName) {
            HostDiscovery hostDiscovery = _wrappedSource.forService(serviceName);
            if (hostDiscovery != null) {
                _closeHostDiscovery = true;
            }
            return hostDiscovery;
        }

View Full Code Here

    @VisibleForTesting
    ServicePool<S> buildInternal() {
        checkNotNull(_serviceFactory);
        checkNotNull(_metrics);


        HostDiscovery hostDiscovery = findHostDiscovery(_serviceName);


        boolean shutdownHealthCheckExecutorOnClose = (_healthCheckExecutor == null);


        try {
            if (_cachingPolicy == null) {
                _cachingPolicy = ServiceCachingPolicyBuilder.NO_CACHING;
            }


            if (_healthCheckExecutor == null) {
                _healthCheckExecutor = Executors.newScheduledThreadPool(DEFAULT_NUM_HEALTH_CHECK_THREADS,
                        new ThreadFactoryBuilder()
                                .setNameFormat(_serviceName + "-HealthCheckThread-%d")
                                .setDaemon(true)
                                .build());
            }


            ServicePool<S> servicePool = new ServicePool<>(Ticker.systemTicker(), hostDiscovery, _closeHostDiscovery,
                    _serviceFactory, _cachingPolicy, _partitionFilter, _loadBalanceAlgorithm, _healthCheckExecutor,
                    shutdownHealthCheckExecutorOnClose, _metrics);


            _closeHostDiscovery = false;


            return servicePool;
        } catch (Throwable t) {
            if (shutdownHealthCheckExecutorOnClose && _healthCheckExecutor != null) {
                _healthCheckExecutor.shutdownNow();
                _healthCheckExecutor = null;
            }


            try {
                if (_closeHostDiscovery) {
                    hostDiscovery.close();
                }
            } catch (IOException e) {
                // NOP
            } finally {
                _closeHostDiscovery = false;

View Full Code Here

        }
    }


    private HostDiscovery findHostDiscovery(String serviceName) {
        for (HostDiscoverySource source : _hostDiscoverySources) {
            HostDiscovery hostDiscovery = source.forService(serviceName);
            if (hostDiscovery != null) {
                return hostDiscovery;
            }
        }
        throw new IllegalStateException(format("No HostDiscovery found for service: %s", serviceName));

View Full Code Here

            _wrappedSource = wrappedSource;
        }


        @Override
        public HostDiscovery forService(String serviceName) {
            HostDiscovery hostDiscovery = _wrappedSource.forService(serviceName);
            if (hostDiscovery != null) {
                _closeHostDiscovery = true;
            }
            return hostDiscovery;
        }

View Full Code Here

TOP

Related Classes of com.bazaarvoice.ostrich.HostDiscovery

com.bazaarvoice.ostrich.pool.ServicePoolBuilder

com.bazaarvoice.ostrich.pool.ServicePoolBuilder$ClosingHostDiscoverySource

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.