├── .gitignore ├── LICENSE ├── README.md ├── pom.xml └── src ├── assembly.xml └── main └── java └── io └── imply └── druid └── query ├── DruidClient.java └── ExampleMain.java /.gitignore: -------------------------------------------------------------------------------- 1 | dist 2 | target 3 | *.iml 4 | *.ipr 5 | *.iws 6 | *.tar.gz 7 | *.swp 8 | *.swo 9 | .classpath 10 | .idea 11 | .project 12 | .settings/ 13 | *.log 14 | *.DS_Store 15 | _site 16 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | 2 | Apache License 3 | Version 2.0, January 2004 4 | http://www.apache.org/licenses/ 5 | 6 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 7 | 8 | 1. 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We also recommend that a 186 | file or class name and description of purpose be included on the 187 | same "printed page" as the copyright notice for easier 188 | identification within third-party archives. 189 | 190 | Copyright [yyyy] [name of copyright owner] 191 | 192 | Licensed under the Apache License, Version 2.0 (the "License"); 193 | you may not use this file except in compliance with the License. 194 | You may obtain a copy of the License at 195 | 196 | http://www.apache.org/licenses/LICENSE-2.0 197 | 198 | Unless required by applicable law or agreed to in writing, software 199 | distributed under the License is distributed on an "AS IS" BASIS, 200 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 201 | See the License for the specific language governing permissions and 202 | limitations under the License. 203 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ## Druid Client 2 | 3 | This is a client that can be used to make Druid queries from the JVM. Note that unlike the 4 | [JSON query API](http://druid.io/docs/latest/querying/querying.html), this depends on non-stable Druid 5 | APIs. You may need to adjust code even for minor Druid updates. 6 | 7 | ### Installation 8 | 9 | To install this library, run `mvn install`. You can then include it in projects with Maven by using 10 | the dependency: 11 | 12 | ```xml 13 | 14 | io.imply 15 | druid-client 16 | 0.1-SNAPSHOT 17 | 18 | ``` 19 | 20 | ### Example 21 | 22 | Check out [ExampleMain.java](https://github.com/implydata/druid-client/blob/master/src/main/java/io/imply/druid/query/ExampleMain.java) for example code. 23 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 18 | 19 | 21 | 4.0.0 22 | 23 | io.imply 24 | druid-client 25 | 0.11.0-1-SNAPSHOT 26 | 27 | 28 | scm:git:https://github.com/implydata/druid-client.git 29 | scm:git:ssh://git@github.com/implydata/druid-client.git 30 | HEAD 31 | 32 | 33 | 34 | UTF-8 35 | 0.11.0 36 | 37 | 38 | 39 | 40 | io.druid 41 | druid-server 42 | ${druid.version} 43 | 44 | 45 | 46 | 47 | junit 48 | junit 49 | 4.12 50 | test 51 | 52 | 53 | 54 | 55 | 56 | 57 | org.apache.maven.plugins 58 | maven-compiler-plugin 59 | 3.1 60 | 61 | -Xlint:unchecked 62 | 1.7 63 | 1.7 64 | 65 | 66 | 67 | org.apache.maven.plugins 68 | maven-assembly-plugin 69 | 2.5.5 70 | 71 | 72 | distro-assembly 73 | package 74 | 75 | single 76 | 77 | 78 | ${project.artifactId}-${project.version} 79 | false 80 | posix 81 | 82 | src/assembly/assembly.xml 83 | 84 | 85 | 86 | 87 | 88 | 89 | org.apache.maven.plugins 90 | maven-surefire-plugin 91 | 2.19.1 92 | 93 | -Duser.timezone=UTC 94 | true 95 | 96 | 97 | 98 | maven-release-plugin 99 | 2.5.3 100 | 101 | 102 | org.apache.maven.scm 103 | maven-scm-provider-gitexe 104 | 1.9.5 105 | 106 | 107 | 108 | 109 | org.apache.maven.plugins 110 | maven-jar-plugin 111 | 3.0.2 112 | 113 | 114 | false 115 | 116 | 117 | 118 | 119 | 120 | 121 | -------------------------------------------------------------------------------- /src/assembly.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 20 | bin 21 | 22 | tar.gz 23 | 24 | 25 | ${project.name} 26 | 27 | 28 | 29 | false 30 | true 31 | . 32 | false 33 | 34 | 35 | 36 | 37 | 38 | ${project.build.directory} 39 | . 40 | 41 | *.jar 42 | 43 | 44 | 45 | 46 | -------------------------------------------------------------------------------- /src/main/java/io/imply/druid/query/DruidClient.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2016 Imply Data, Inc. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package io.imply.druid.query; 18 | 19 | import com.fasterxml.jackson.databind.ObjectMapper; 20 | import com.google.common.base.Throwables; 21 | import com.google.common.collect.ImmutableList; 22 | import com.google.common.collect.Maps; 23 | import com.google.common.util.concurrent.ListenableFuture; 24 | import com.google.inject.Binder; 25 | import com.google.inject.Injector; 26 | import com.google.inject.Key; 27 | import com.google.inject.Module; 28 | import com.metamx.common.guava.Sequence; 29 | import com.metamx.common.lifecycle.Lifecycle; 30 | import com.metamx.common.logger.Logger; 31 | import com.metamx.emitter.core.NoopEmitter; 32 | import com.metamx.emitter.service.ServiceEmitter; 33 | import com.metamx.http.client.HttpClient; 34 | import com.metamx.http.client.HttpClientConfig; 35 | import com.metamx.http.client.HttpClientInit; 36 | import io.druid.client.DirectDruidClient; 37 | import io.druid.guice.GuiceInjectors; 38 | import io.druid.guice.JsonConfigProvider; 39 | import io.druid.guice.annotations.Json; 40 | import io.druid.guice.annotations.Self; 41 | import io.druid.guice.annotations.Smile; 42 | import io.druid.guice.http.DruidHttpClientConfig; 43 | import io.druid.initialization.Initialization; 44 | import io.druid.query.DruidProcessingConfig; 45 | import io.druid.query.MapQueryToolChestWarehouse; 46 | import io.druid.query.Query; 47 | import io.druid.query.QueryToolChestWarehouse; 48 | import io.druid.query.QueryWatcher; 49 | import io.druid.server.DruidNode; 50 | 51 | import java.io.Closeable; 52 | import java.io.IOException; 53 | import java.util.Map; 54 | 55 | public class DruidClient implements Closeable 56 | { 57 | private static final Logger log = new Logger(DruidClient.class); 58 | 59 | private static final Injector INJECTOR; 60 | private static final QueryToolChestWarehouse WAREHOUSE; 61 | private static final QueryWatcher WATCHER; 62 | private static final ObjectMapper JSON_MAPPER; 63 | private static final ObjectMapper SMILE_MAPPER; 64 | private static final DruidHttpClientConfig HTTP_CLIENT_CONFIG; 65 | private static final ServiceEmitter SERVICE_EMITTER; 66 | 67 | static { 68 | INJECTOR = Initialization.makeInjectorWithModules( 69 | GuiceInjectors.makeStartupInjector(), 70 | ImmutableList.of( 71 | new Module() 72 | { 73 | @Override 74 | public void configure(Binder binder) 75 | { 76 | JsonConfigProvider.bindInstance( 77 | binder, 78 | Key.get(DruidNode.class, Self.class), 79 | new DruidNode("druid-client", null, null) 80 | ); 81 | } 82 | }, 83 | new Module() 84 | { 85 | @Override 86 | public void configure(Binder binder) 87 | { 88 | binder.bind(QueryToolChestWarehouse.class).to(MapQueryToolChestWarehouse.class); 89 | JsonConfigProvider.bind(binder, "druid.client.http", DruidHttpClientConfig.class); 90 | 91 | // Set up dummy DruidProcessingConfig to avoid large offheap buffer generation. 92 | final DruidProcessingConfig dummyConfig = new DruidProcessingConfig() 93 | { 94 | @Override 95 | public int intermediateComputeSizeBytes() 96 | { 97 | return 1; 98 | } 99 | 100 | @Override 101 | public String getFormatString() 102 | { 103 | return "dummy"; 104 | } 105 | }; 106 | binder.bind(DruidProcessingConfig.class).toInstance(dummyConfig); 107 | } 108 | } 109 | ) 110 | ); 111 | WAREHOUSE = INJECTOR.getInstance(QueryToolChestWarehouse.class); 112 | WATCHER = new QueryWatcher() 113 | { 114 | @Override 115 | public void registerQuery(Query query, ListenableFuture future) 116 | { 117 | } 118 | }; 119 | JSON_MAPPER = INJECTOR.getInstance(Key.get(ObjectMapper.class, Json.class)); 120 | SMILE_MAPPER = INJECTOR.getInstance(Key.get(ObjectMapper.class, Smile.class)); 121 | HTTP_CLIENT_CONFIG = INJECTOR.getInstance(DruidHttpClientConfig.class); 122 | SERVICE_EMITTER = new ServiceEmitter("druid-client", "localhost", new NoopEmitter()); 123 | } 124 | 125 | private final DirectDruidClient directDruidClient; 126 | private final Closeable closeable; 127 | 128 | private DruidClient(DirectDruidClient directDruidClient, Closeable closeable) 129 | { 130 | this.directDruidClient = directDruidClient; 131 | this.closeable = closeable; 132 | } 133 | 134 | /** 135 | * Creates a DruidClient that owns its own HttpClient. 136 | * 137 | * @param host broker host and port 138 | * 139 | * @return druid client 140 | */ 141 | public static DruidClient create(final String host) 142 | { 143 | final HttpClientConfig.Builder builder = HttpClientConfig 144 | .builder() 145 | .withNumConnections(HTTP_CLIENT_CONFIG.getNumConnections()) 146 | .withReadTimeout(HTTP_CLIENT_CONFIG.getReadTimeout()); 147 | 148 | final Lifecycle lifecycle = new Lifecycle(); 149 | final HttpClient httpClient = HttpClientInit.createClient(builder.build(), lifecycle); 150 | final DirectDruidClient directDruidClient = new DirectDruidClient( 151 | WAREHOUSE, 152 | WATCHER, 153 | SMILE_MAPPER, 154 | httpClient, 155 | host, 156 | SERVICE_EMITTER 157 | ); 158 | return new DruidClient( 159 | directDruidClient, 160 | new Closeable() 161 | { 162 | @Override 163 | public void close() throws IOException 164 | { 165 | lifecycle.stop(); 166 | } 167 | } 168 | ); 169 | } 170 | 171 | /** 172 | * Creates a DruidClient using a shared HttpClient. The shared HttpClient will not be closed when this DruidClient 173 | * is closed. 174 | * 175 | * @param host broker host and port 176 | * @param httpClient shared HttpClient 177 | * 178 | * @return druid client 179 | */ 180 | public static DruidClient create(final String host, final HttpClient httpClient) 181 | { 182 | final DirectDruidClient directDruidClient = new DirectDruidClient( 183 | WAREHOUSE, 184 | WATCHER, 185 | SMILE_MAPPER, 186 | httpClient, 187 | host, 188 | SERVICE_EMITTER 189 | ); 190 | return new DruidClient(directDruidClient, null); 191 | } 192 | 193 | public ObjectMapper getJsonMapper() 194 | { 195 | return JSON_MAPPER; 196 | } 197 | 198 | public Sequence execute(final Query query) 199 | { 200 | final Map context = Maps.newHashMap(); 201 | try { 202 | log.debug("Issuing query: %s", getJsonMapper().writeValueAsString(query)); 203 | } 204 | catch (Exception e) { 205 | throw Throwables.propagate(e); 206 | } 207 | return directDruidClient.run(query, context); 208 | } 209 | 210 | public Sequence execute(final Map queryMap, final Class> queryClass) 211 | { 212 | return execute(JSON_MAPPER.convertValue(queryMap, queryClass)); 213 | } 214 | 215 | @Override 216 | public void close() throws IOException 217 | { 218 | if (closeable != null) { 219 | closeable.close(); 220 | } 221 | } 222 | } 223 | -------------------------------------------------------------------------------- /src/main/java/io/imply/druid/query/ExampleMain.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2016 Imply Data, Inc. 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package io.imply.druid.query; 18 | 19 | import com.google.common.collect.ImmutableList; 20 | import com.google.common.collect.Lists; 21 | import com.metamx.common.guava.Sequence; 22 | import com.metamx.common.guava.Sequences; 23 | import io.druid.query.Druids; 24 | import io.druid.query.Result; 25 | import io.druid.query.filter.AndDimFilter; 26 | import io.druid.query.filter.DimFilter; 27 | import io.druid.query.filter.SelectorDimFilter; 28 | import io.druid.query.select.EventHolder; 29 | import io.druid.query.select.PagingSpec; 30 | import io.druid.query.select.SelectQuery; 31 | import io.druid.query.select.SelectResultValue; 32 | import org.joda.time.Interval; 33 | 34 | import java.util.List; 35 | 36 | public class ExampleMain 37 | { 38 | public static void main(String[] args) throws Exception 39 | { 40 | final String host = args.length == 0 ? "localhost:8082" : args[0]; 41 | try (final DruidClient druidClient = DruidClient.create(host)) { 42 | // Create a simple select query using the Druids query builder. 43 | final int threshold = 50; 44 | final SelectQuery selectQuery = Druids 45 | .newSelectQueryBuilder() 46 | .dataSource("wikiticker") 47 | .intervals(ImmutableList.of(new Interval("1000/3000"))) 48 | .filters( 49 | new AndDimFilter( 50 | ImmutableList.of( 51 | new SelectorDimFilter("countryName", "United States", null), 52 | new SelectorDimFilter("cityName", "San Francisco", null) 53 | ) 54 | ) 55 | ) 56 | .dimensions(ImmutableList.of("page", "user")) 57 | .pagingSpec(new PagingSpec(null, threshold)) 58 | .build(); 59 | 60 | // Fetch the results. 61 | final long startTime = System.currentTimeMillis(); 62 | final Sequence> resultSequence = druidClient.execute(selectQuery); 63 | final List> resultList = Sequences.toList( 64 | resultSequence, 65 | Lists.>newArrayList() 66 | ); 67 | final long fetchTime = System.currentTimeMillis() - startTime; 68 | 69 | // Print the results. 70 | int resultCount = 0; 71 | for (final Result result : resultList) { 72 | for (EventHolder eventHolder : result.getValue().getEvents()) { 73 | System.out.println(eventHolder.getEvent()); 74 | resultCount++; 75 | } 76 | } 77 | 78 | // Print statistics. 79 | System.out.println( 80 | String.format( 81 | "Fetched %,d rows in %,dms.", 82 | resultCount, 83 | fetchTime 84 | ) 85 | ); 86 | } 87 | } 88 | } 89 | --------------------------------------------------------------------------------