liran-funaro commented on a change in pull request #10593:
URL: https://github.com/apache/druid/pull/10593#discussion_r541911202
##########
File path:
processing/src/main/java/org/apache/druid/segment/generator/DataGenerator.java
##########
@@ -143,4 +151,54 @@ private long nextTimestamp()
}
}
+ /**
+ * Initialize a Java Stream generator for InputRow from this DataGenerator.
+ *
+ * @param numOfRows the number of rows to generate
+ * @return a generator
+ */
+ private Stream<InputRow> generator(int numOfRows)
+ {
+ return Stream.generate(this::nextRow).limit(numOfRows);
+ }
+
+ /**
+ * Add rows form any generator to an index.
Review comment:
Fixed
##########
File path:
processing/src/test/java/org/apache/druid/segment/incremental/IncrementalIndexCreator.java
##########
@@ -0,0 +1,214 @@
+/*
+ * 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.druid.segment.incremental;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.cfg.MapperConfig;
+import com.fasterxml.jackson.databind.introspect.AnnotatedClass;
+import com.fasterxml.jackson.databind.introspect.AnnotatedClassResolver;
+import com.fasterxml.jackson.databind.jsontype.NamedType;
+import com.fasterxml.jackson.databind.jsontype.SubtypeResolver;
+import org.apache.druid.jackson.DefaultObjectMapper;
+import org.apache.druid.java.util.common.io.Closer;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+import java.util.Locale;
+import java.util.Objects;
+import java.util.stream.Collectors;
+
+/**
+ * An incremental-index creator for parameterized incremental-index tests.
+ * It lists all the available incremental-index implementations, and
responsible to create and close incremental-index
+ * instances during the tests.
+ */
+public class IncrementalIndexCreator implements Closeable
+{
+ public static final ObjectMapper JSON_MAPPER = new DefaultObjectMapper();
+
+ /**
+ * Allows adding support for testing unregistered indexes.
+ * It is used by Druid's extensions for the incremental-index.
+ *
+ * @param c an index spec class
+ * @param name an index spec name
+ */
+ public static void addIndexSpec(Class<?> c, String name)
+ {
+ JSON_MAPPER.registerSubtypes(new NamedType(c, name));
+ }
+
+ static {
+ // The off-heap incremental-index is not registered for production, but we
want to include it in the tests.
+
IncrementalIndexCreator.addIndexSpec(OffheapIncrementalIndexTestSpec.class,
OffheapIncrementalIndexTestSpec.TYPE);
+ }
+
+ /**
+ * Fetch all the available incremental-index implementations.
+ * It can be used to parametrize the test. If more parameters are needed,
use indexTypeCartesianProduct().
+ * @see #indexTypeCartesianProduct(Collection[]).
+ *
+ * @return a list of all the incremental-index implementations types (String)
+ */
+ public static List<String> getAppendableIndexTypes()
+ {
+ SubtypeResolver resolver = JSON_MAPPER.getSubtypeResolver();
+ MapperConfig<?> config = JSON_MAPPER.getDeserializationConfig();
+ AnnotatedClass cls =
AnnotatedClassResolver.resolveWithoutSuperTypes(config,
AppendableIndexSpec.class);
+ Collection<NamedType> types =
resolver.collectAndResolveSubtypesByClass(config, cls);
+ return
types.stream().map(NamedType::getName).filter(Objects::nonNull).distinct().collect(Collectors.toList());
+ }
+
+ public interface IndexCreator
+ {
+ /**
+ * Build an index given a builder and args.
+ *
+ * @param builder an incremental index builder supplied by the framework
+ * @param args a list of arguments that are used to configure the builder
+ * @return a new instance of an incremental-index
+ */
+ IncrementalIndex<?> createIndex(AppendableIndexBuilder builder, Object...
args);
+ }
+
+ private final Closer closer = Closer.create();
+
+ private final AppendableIndexSpec appendableIndexSpec;
+
+ private final IndexCreator indexCreator;
+
+ /**
+ * Initialize the creator.
+ *
+ * @param spec a spec that can generate a incremental-index builder
+ * @param indexCreator a function that generate an index given a builder and
arguments
+ */
+ public IncrementalIndexCreator(AppendableIndexSpec spec, IndexCreator
indexCreator)
+ {
+ this.appendableIndexSpec = spec;
+ this.indexCreator = indexCreator;
+ }
+
+ /**
+ * Initialize the creator.
+ *
+ * @param indexType an index type (name)
+ * @param indexCreator a function that generate an index given a builder and
arguments
+ */
+ public IncrementalIndexCreator(String indexType, IndexCreator indexCreator)
throws JsonProcessingException
+ {
+ this(parseIndexType(indexType), indexCreator);
+ }
+
+ /**
+ * Generate an AppendableIndexSpec from index type.
+ *
+ * @param indexType an index type
+ * @return AppendableIndexSpec instance of this type
+ * @throws JsonProcessingException if failed to to parse the index
+ */
+ public static AppendableIndexSpec parseIndexType(String indexType) throws
JsonProcessingException
+ {
+ return JSON_MAPPER.readValue(
+ String.format(Locale.ENGLISH, "{\"type\": \"%s\"}", indexType),
Review comment:
Fixed.
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