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Add dynamic index writes based on data fields
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110 changes: 110 additions & 0 deletions
110
src/main/java/org/elasticsearch/hadoop/serialization/AbstractIndexFormat.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| /* | ||
| * Licensed to Elasticsearch under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch 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.elasticsearch.hadoop.serialization; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| import org.elasticsearch.hadoop.EsHadoopIllegalArgumentException; | ||
| import org.elasticsearch.hadoop.cfg.Settings; | ||
| import org.elasticsearch.hadoop.serialization.field.FieldExtractor; | ||
| import org.elasticsearch.hadoop.util.Assert; | ||
| import org.elasticsearch.hadoop.util.ObjectUtils; | ||
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| public abstract class AbstractIndexFormat implements IndexFormat, SettingsAware { | ||
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| protected Settings settings; | ||
| protected String pattern; | ||
| protected boolean hasPattern = false; | ||
| protected List<Object> index; | ||
| protected List<Object> type; | ||
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| @Override | ||
| public void setSettings(Settings settings) { | ||
| this.settings = settings; | ||
| } | ||
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| @Override | ||
| public void compile(String pattern) { | ||
| this.pattern = pattern; | ||
| // break it down into index/type | ||
| String[] split = pattern.split("/"); | ||
| Assert.isTrue(!ObjectUtils.isEmpty(split), "invalid pattern given " + pattern); | ||
| Assert.isTrue(split.length == 2, "invalid pattern given " + pattern); | ||
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| // check pattern | ||
| hasPattern = pattern.contains("{") && pattern.contains("}"); | ||
| index = parse(split[0].trim()); | ||
| type = parse(split[1].trim()); | ||
| } | ||
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| protected List<Object> parse(String string) { | ||
| // break it down into fields | ||
| List<Object> template = new ArrayList<Object>(); | ||
| while (string.contains("{")) { | ||
| int startPattern = string.indexOf("{"); | ||
| template.add(string.substring(0, startPattern)); | ||
| int endPattern = string.indexOf("}"); | ||
| Assert.isTrue(endPattern > startPattern + 1, "Invalid pattern given " + string); | ||
| template.add(createFieldExtractor(string.substring(startPattern + 1, endPattern))); | ||
| string = string.substring(endPattern + 1).trim(); | ||
| } | ||
| template.add(string); | ||
| return template; | ||
| } | ||
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| private void append(StringBuilder sb, List<Object> list, Object target) { | ||
| for (Object object : list) { | ||
| if (object instanceof FieldExtractor) { | ||
| String field = ((FieldExtractor) object).field(target); | ||
| if (field == null) { | ||
| throw new EsHadoopIllegalArgumentException(String.format("Cannot find match for %s", pattern)); | ||
| } | ||
| else { | ||
| sb.append(field); | ||
| } | ||
| } | ||
| else { | ||
| sb.append(object.toString()); | ||
| } | ||
| } | ||
| } | ||
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| @Override | ||
| public String field(Object target) { | ||
| StringBuilder sb = new StringBuilder(); | ||
| sb.append("\"_index\":\""); | ||
| append(sb, index, target); | ||
| sb.append("\","); | ||
| sb.append("\"_type\":\""); | ||
| append(sb, type, target); | ||
| sb.append("\""); | ||
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| return sb.toString(); | ||
| } | ||
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| @Override | ||
| public boolean hasPattern() { | ||
| return hasPattern; | ||
| } | ||
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| protected abstract Object createFieldExtractor(String fieldName); | ||
| } |
30 changes: 30 additions & 0 deletions
30
src/main/java/org/elasticsearch/hadoop/serialization/DefaultIndexFormat.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,30 @@ | ||
| /* | ||
| * Licensed to Elasticsearch under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch 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.elasticsearch.hadoop.serialization; | ||
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| import org.elasticsearch.hadoop.serialization.field.ConstantFieldExtractor; | ||
| import org.elasticsearch.hadoop.util.ObjectUtils; | ||
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| public class DefaultIndexFormat extends AbstractIndexFormat { | ||
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| protected Object createFieldExtractor(String fieldName) { | ||
| settings.setProperty(ConstantFieldExtractor.PROPERTY, fieldName); | ||
| return ObjectUtils.instantiate(settings.getMappingDefaultClassExtractor(), settings); | ||
| } | ||
| } |
37 changes: 37 additions & 0 deletions
37
src/main/java/org/elasticsearch/hadoop/serialization/IndexFormat.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| /* | ||
| * Licensed to Elasticsearch under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch 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.elasticsearch.hadoop.serialization; | ||
|
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| import org.elasticsearch.hadoop.serialization.field.FieldExtractor; | ||
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| /** | ||
| * Produces an index name based on the given pattern and arguments (field values). | ||
| */ | ||
| public interface IndexFormat extends FieldExtractor { | ||
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| void compile(String pattern); | ||
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| /** | ||
| * Indicates whether the given string is a pattern or not. | ||
| * | ||
| * @return true for a pattern, false otherwise | ||
| */ | ||
| boolean hasPattern(); | ||
| } |
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