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PIP-12 Introduce builder for creating Producer Consumer Reader (#1089)
* PIP-12: Introduce builders for creating Producer Consumer Reader * Fixed Javadocs * Addressed comments
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pulsar-client/src/main/java/org/apache/pulsar/client/api/ClientBuilder.java
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| /** | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
| package org.apache.pulsar.client.api; | ||
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| import java.io.Serializable; | ||
| import java.util.Map; | ||
| import java.util.concurrent.TimeUnit; | ||
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| import org.apache.pulsar.client.api.PulsarClientException.UnsupportedAuthenticationException; | ||
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| /** | ||
| * Builder interface that is used to construct a {@link PulsarClient} instance. | ||
| * | ||
| * @since 2.0.0 | ||
| */ | ||
| public interface ClientBuilder extends Serializable, Cloneable { | ||
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| /** | ||
| * @return the new {@link PulsarClient} instance | ||
| */ | ||
| PulsarClient build() throws PulsarClientException; | ||
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| /** | ||
| * Create a copy of the current client builder. | ||
| * <p> | ||
| * Cloning the builder can be used to share an incomplete configuration and specialize it multiple times. For | ||
| * example: | ||
| * | ||
| * <pre> | ||
| * ClientBuilder builder = PulsarClient.builder().ioThreads(8).listenerThreads(4); | ||
| * | ||
| * PulsarClient client1 = builder.clone().serviceUrl(URL_1).build(); | ||
| * PulsarClient client2 = builder.clone().serviceUrl(URL_2).build(); | ||
| * </pre> | ||
| */ | ||
| ClientBuilder clone(); | ||
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| /** | ||
| * Configure the service URL for the Pulsar service. | ||
| * <p> | ||
| * This parameter is required | ||
| * | ||
| * @param serviceUrl | ||
| * @return | ||
| */ | ||
| ClientBuilder serviceUrl(String serviceUrl); | ||
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| /** | ||
| * Set the authentication provider to use in the Pulsar client instance. | ||
| * <p> | ||
| * Example: | ||
| * <p> | ||
| * | ||
| * <pre> | ||
| * <code> | ||
| * String AUTH_CLASS = "org.apache.pulsar.client.impl.auth.AuthenticationTls"; | ||
| * | ||
| * Map<String, String> conf = new TreeMap<>(); | ||
| * conf.put("tlsCertFile", "/my/cert/file"); | ||
| * conf.put("tlsKeyFile", "/my/key/file"); | ||
| * | ||
| * Authentication auth = AuthenticationFactor.create(AUTH_CLASS, conf); | ||
| * | ||
| * PulsarClient client = PulsarClient.builder() | ||
| * .serviceUrl(SERVICE_URL) | ||
| * .authentication(auth) | ||
| * .build(); | ||
| * .... | ||
| * </code> | ||
| * </pre> | ||
| * | ||
| * @param authentication | ||
| * an instance of the {@link Authentication} provider already constructed | ||
| */ | ||
| ClientBuilder authentication(Authentication authentication); | ||
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| /** | ||
| * Set the authentication provider to use in the Pulsar client instance. | ||
| * <p> | ||
| * Example: | ||
| * <p> | ||
| * | ||
| * <pre> | ||
| * <code> | ||
| * String AUTH_CLASS = "org.apache.pulsar.client.impl.auth.AuthenticationTls"; | ||
| * String AUTH_PARAMS = "tlsCertFile:/my/cert/file,tlsKeyFile:/my/key/file"; | ||
| * | ||
| * PulsarClient client = PulsarClient.builder() | ||
| * .serviceUrl(SERVICE_URL) | ||
| * .authentication(AUTH_CLASS, AUTH_PARAMS) | ||
| * .build(); | ||
| * .... | ||
| * </code> | ||
| * </pre> | ||
| * | ||
| * @param authPluginClassName | ||
| * name of the Authentication-Plugin you want to use | ||
| * @param authParamsString | ||
| * string which represents parameters for the Authentication-Plugin, e.g., "key1:val1,key2:val2" | ||
| * @throws UnsupportedAuthenticationException | ||
| * failed to instantiate specified Authentication-Plugin | ||
| */ | ||
| ClientBuilder authentication(String authPluginClassName, String authParamsString) | ||
| throws UnsupportedAuthenticationException; | ||
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| /** | ||
| * Set the authentication provider to use in the Pulsar client instance. | ||
| * <p> | ||
| * Example: | ||
| * <p> | ||
| * | ||
| * <pre> | ||
| * <code> | ||
| * String AUTH_CLASS = "org.apache.pulsar.client.impl.auth.AuthenticationTls"; | ||
| * | ||
| * Map<String, String> conf = new TreeMap<>(); | ||
| * conf.put("tlsCertFile", "/my/cert/file"); | ||
| * conf.put("tlsKeyFile", "/my/key/file"); | ||
| * | ||
| * PulsarClient client = PulsarClient.builder() | ||
| * .serviceUrl(SERVICE_URL) | ||
| * .authentication(AUTH_CLASS, conf) | ||
| * .build(); | ||
| * .... | ||
| * </code> | ||
| * | ||
| * @param authPluginClassName | ||
| * name of the Authentication-Plugin you want to use | ||
| * @param authParams | ||
| * map which represents parameters for the Authentication-Plugin | ||
| * @throws UnsupportedAuthenticationException | ||
| * failed to instantiate specified Authentication-Plugin | ||
| */ | ||
| ClientBuilder authentication(String authPluginClassName, Map<String, String> authParams) | ||
| throws UnsupportedAuthenticationException; | ||
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| /** | ||
| * Set the operation timeout <i>(default: 30 seconds)</i> | ||
| * <p> | ||
| * Producer-create, subscribe and unsubscribe operations will be retried until this interval, after which the | ||
| * operation will be maked as failed | ||
| * | ||
| * @param operationTimeout | ||
| * operation timeout | ||
| * @param unit | ||
| * time unit for {@code operationTimeout} | ||
| */ | ||
| ClientBuilder operationTimeout(int operationTimeout, TimeUnit unit); | ||
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| /** | ||
| * Set the number of threads to be used for handling connections to brokers <i>(default: 1 thread)</i> | ||
| * | ||
| * @param numIoThreads | ||
| */ | ||
| ClientBuilder ioThreads(int numIoThreads); | ||
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| /** | ||
| * Set the number of threads to be used for message listeners <i>(default: 1 thread)</i> | ||
| * | ||
| * @param numListenerThreads | ||
| */ | ||
| ClientBuilder listenerThreads(int numListenerThreads); | ||
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| /** | ||
| * Sets the max number of connection that the client library will open to a single broker. | ||
| * <p> | ||
| * By default, the connection pool will use a single connection for all the producers and consumers. Increasing this | ||
| * parameter may improve throughput when using many producers over a high latency connection. | ||
| * <p> | ||
| * | ||
| * @param connectionsPerBroker | ||
| * max number of connections per broker (needs to be greater than 0) | ||
| */ | ||
| ClientBuilder connectionsPerBroker(int connectionsPerBroker); | ||
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| /** | ||
| * Configure whether to use TCP no-delay flag on the connection, to disable Nagle algorithm. | ||
| * <p> | ||
| * No-delay features make sure packets are sent out on the network as soon as possible, and it's critical to achieve | ||
| * low latency publishes. On the other hand, sending out a huge number of small packets might limit the overall | ||
| * throughput, so if latency is not a concern, it's advisable to set the <code>useTcpNoDelay</code> flag to false. | ||
| * <p> | ||
| * Default value is true | ||
| * | ||
| * @param enableTcpNoDelay | ||
| */ | ||
| ClientBuilder enableTcpNoDelay(boolean enableTcpNoDelay); | ||
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| /** | ||
| * Configure whether to use TLS encryption on the connection <i>(default: false)</i> | ||
| * | ||
| * @param enableTls | ||
| */ | ||
| ClientBuilder enableTls(boolean enableTls); | ||
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| /** | ||
| * Set the path to the trusted TLS certificate file | ||
| * | ||
| * @param tlsTrustCertsFilePath | ||
| */ | ||
| ClientBuilder tlsTrustCertsFilePath(String tlsTrustCertsFilePath); | ||
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| /** | ||
| * Configure whether the Pulsar client accept untrusted TLS certificate from broker <i>(default: false)</i> | ||
| * | ||
| * @param allowTlsInsecureConnection | ||
| */ | ||
| ClientBuilder allowTlsInsecureConnection(boolean allowTlsInsecureConnection); | ||
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| /** | ||
| * It allows to validate hostname verification when client connects to broker over tls. It validates incoming x509 | ||
| * certificate and matches provided hostname(CN/SAN) with expected broker's host name. It follows RFC 2818, 3.1. | ||
| * Server Identity hostname verification. | ||
| * | ||
| * @see <a href="https://tools.ietf.org/html/rfc2818">rfc2818</a> | ||
| * | ||
| * @param enableTlsHostnameVerification | ||
| */ | ||
| ClientBuilder enableTlsHostnameVerification(boolean enableTlsHostnameVerification); | ||
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| /** | ||
| * Set the interval between each stat info <i>(default: 60 seconds)</i> Stats will be activated with positive | ||
| * statsIntervalSeconds It should be set to at least 1 second | ||
| * | ||
| * @param statsIntervalSeconds | ||
| * the interval between each stat info | ||
| * @param unit | ||
| * time unit for {@code statsInterval} | ||
| */ | ||
| ClientBuilder statsInterval(long statsInterval, TimeUnit unit); | ||
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| /** | ||
| * Number of concurrent lookup-requests allowed on each broker-connection to prevent overload on broker. | ||
| * <i>(default: 5000)</i> It should be configured with higher value only in case of it requires to produce/subscribe | ||
| * on thousands of topic using created {@link PulsarClient} | ||
| * | ||
| * @param maxConcurrentLookupRequests | ||
| */ | ||
| ClientBuilder maxConcurrentLookupRequests(int maxConcurrentLookupRequests); | ||
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| /** | ||
| * Set max number of broker-rejected requests in a certain time-frame (30 seconds) after which current connection | ||
| * will be closed and client creates a new connection that give chance to connect a different broker <i>(default: | ||
| * 50)</i> | ||
| * | ||
| * @param maxNumberOfRejectedRequestPerConnection | ||
| */ | ||
| ClientBuilder maxNumberOfRejectedRequestPerConnection(int maxNumberOfRejectedRequestPerConnection); | ||
| } |
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