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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.searchdefinition;
import com.yahoo.document.ReferenceDataType;
import com.yahoo.document.TemporaryStructuredDataType;
import com.yahoo.searchdefinition.document.SDDocumentType;
import com.yahoo.searchdefinition.document.SDField;
import com.yahoo.searchdefinition.document.TemporarySDField;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static java.util.stream.Collectors.toList;
/**
* @author bjorncs
*/
public class DocumentGraphValidatorTest {
@Rule
public final ExpectedException exceptionRule = ExpectedException.none();
@Test
public void simple_ref_dag_is_allowed() {
Search advertiserSearch = createSearchWithName("advertiser");
Search campaignSearch = createSearchWithName("campaign");
Search adSearch = createSearchWithName("ad");
createDocumentReference(adSearch, advertiserSearch, "advertiser_ref");
createDocumentReference(adSearch, campaignSearch, "campaign_ref");
DocumentGraphValidator validator = new DocumentGraphValidator();
validator.validateDocumentGraph(documentListOf(advertiserSearch, campaignSearch, adSearch));
}
@Test
public void simple_inheritance_dag_is_allowed() {
Search grandfather = createSearchWithName("grandfather");
Search father = createSearchWithName("father", grandfather);
Search son = createSearchWithName("son", father);
DocumentGraphValidator validator = new DocumentGraphValidator();
validator.validateDocumentGraph(documentListOf(son, father, grandfather));
}
@Test
public void complex_dag_is_allowed() {
Search grandfather = createSearchWithName("grandfather");
Search father = createSearchWithName("father", grandfather);
Search mother = createSearchWithName("mother", grandfather);
createDocumentReference(father, mother, "wife_ref");
Search son = createSearchWithName("son", father, mother);
Search daughter = createSearchWithName("daughter", father, mother);
createDocumentReference(daughter, son, "brother_ref");
Search randomGuy1 = createSearchWithName("randomguy1");
Search randomGuy2 = createSearchWithName("randomguy2");
createDocumentReference(randomGuy1, mother, "secret_ref");
DocumentGraphValidator validator = new DocumentGraphValidator();
validator.validateDocumentGraph(documentListOf(son, father, grandfather, son, daughter, randomGuy1, randomGuy2));
}
@Test
public void ref_cycle_is_forbidden() {
Search search1 = createSearchWithName("doc1");
Search search2 = createSearchWithName("doc2");
Search search3 = createSearchWithName("doc3");
createDocumentReference(search1, search2, "ref_2");
createDocumentReference(search2, search3, "ref_3");
createDocumentReference(search3, search1, "ref_1");
DocumentGraphValidator validator = new DocumentGraphValidator();
exceptionRule.expect(DocumentGraphValidator.DocumentGraphException.class);
exceptionRule.expectMessage("Document dependency cycle detected: doc1->doc2->doc3->doc1.");
validator.validateDocumentGraph(documentListOf(search1, search2, search3));
}
@Test
public void inherit_cycle_is_forbidden() {
Search search1 = createSearchWithName("doc1");
Search search2 = createSearchWithName("doc2", search1);
Search search3 = createSearchWithName("doc3", search2);
search1.getDocument().inherit(search3.getDocument());
DocumentGraphValidator validator = new DocumentGraphValidator();
exceptionRule.expect(DocumentGraphValidator.DocumentGraphException.class);
exceptionRule.expectMessage("Document dependency cycle detected: doc1->doc3->doc2->doc1.");
validator.validateDocumentGraph(documentListOf(search1, search2, search3));
}
@Test
public void combined_inherit_and_ref_cycle_is_forbidden() {
Search search1 = createSearchWithName("doc1");
Search search2 = createSearchWithName("doc2", search1);
Search search3 = createSearchWithName("doc3", search2);
createDocumentReference(search1, search3, "ref_1");
DocumentGraphValidator validator = new DocumentGraphValidator();
exceptionRule.expect(DocumentGraphValidator.DocumentGraphException.class);
exceptionRule.expectMessage("Document dependency cycle detected: doc1->doc3->doc2->doc1.");
validator.validateDocumentGraph(documentListOf(search1, search2, search3));
}
@Test
public void self_reference_is_forbidden() {
Search adSearch = createSearchWithName("ad");
createDocumentReference(adSearch, adSearch, "ad_ref");
DocumentGraphValidator validator = new DocumentGraphValidator();
exceptionRule.expect(DocumentGraphValidator.DocumentGraphException.class);
exceptionRule.expectMessage("Document dependency cycle detected: ad->ad.");
validator.validateDocumentGraph(documentListOf(adSearch));
}
@Test
public void self_inheritance_forbidden() {
Search adSearch = createSearchWithName("ad");
SDDocumentType document = adSearch.getDocument();
document.inherit(document);
DocumentGraphValidator validator = new DocumentGraphValidator();
exceptionRule.expect(DocumentGraphValidator.DocumentGraphException.class);
exceptionRule.expectMessage("Document dependency cycle detected: ad->ad.");
validator.validateDocumentGraph(documentListOf(adSearch));
}
private static List<SDDocumentType> documentListOf(Search... searches) {
return Arrays.stream(searches).map(Search::getDocument).collect(toList());
}
private static Search createSearchWithName(String name, Search... parents) {
Search campaignSearch = new Search(name);
SDDocumentType document = new SDDocumentType(name);
campaignSearch.addDocument(document);
document.setDocumentReferences(new DocumentReferences(Collections.emptyMap()));
Arrays.stream(parents)
.map(Search::getDocument)
.forEach(document::inherit);
return campaignSearch;
}
private static void createDocumentReference(Search from, Search to, String refFieldName) {
SDField refField = new TemporarySDField(refFieldName, ReferenceDataType.createWithInferredId(TemporaryStructuredDataType.create(to.getName())));
SDDocumentType fromDocument = from.getDocument();
fromDocument.addField(refField);
Map<String, DocumentReference> originalMap = fromDocument.getDocumentReferences().get().referenceMap();
HashMap<String, DocumentReference> modifiedMap = new HashMap<>(originalMap);
modifiedMap.put(refFieldName, new DocumentReference(refField, to));
fromDocument.setDocumentReferences(new DocumentReferences(modifiedMap));
}
}
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