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Enhance tika document parsing tests (opensearch-project#13618)
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* Update tika document parsing bwc tests.

Signed-off-by: Carroll <carrofin@amazon.com>

* Skip sample tika files which do not parse consistently.

Signed-off-by: Carroll <carrofin@amazon.com>

* Formatting for spotlessJavaCheck.

Signed-off-by: Carroll <carrofin@amazon.com>

* Use fixed locale for consistent tika parsing.

Signed-off-by: Carroll <carrofin@amazon.com>

* Move sha1 map to .checksums file.

Signed-off-by: Carroll <carrofin@amazon.com>

* For locale dependant files do not verify contents with hash.

Signed-off-by: Carroll <carrofin@amazon.com>

* Remove strict checksum validation for additional locale dependant files.

Signed-off-by: Carroll <carrofin@amazon.com>

---------

Signed-off-by: Carroll <carrofin@amazon.com>
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@finnegancarroll @deshsidd
finnegancarroll authored and deshsidd committed May 17, 2024
1 parent 3bf4927 commit b65f5e4
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65 changes: 39 additions & 26 deletions plugins/ingest-attachment/src/test/java/org/opensearch/ingest/attachment/TikaDocTests.java
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package org.opensearch.ingest.attachment;

import org.apache.commons.codec.digest.DigestUtils;
import org.apache.lucene.tests.util.LuceneTestCase.SuppressFileSystems;
import org.apache.lucene.tests.util.TestUtil;
import org.apache.tika.metadata.Metadata;
import org.opensearch.common.io.PathUtils;
import org.opensearch.common.xcontent.XContentHelper;
import org.opensearch.common.xcontent.json.JsonXContent;
import org.opensearch.test.OpenSearchTestCase;

import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Map;

/**
* Evil test-coverage cheat, we parse a bunch of docs from tika
* so that we have a nice grab-bag variety, and assert some content
* comes back and no exception.
* Parse sample tika documents and assert the contents has not changed according to previously recorded checksums.
* Uncaught changes to tika parsing could potentially pose bwc issues.
* Note: In some cases tika will access a user's locale to inform the parsing of a file.
* The checksums of these files are left empty, and we only validate that parsed content is not null.
*/
@SuppressFileSystems("ExtrasFS") // don't try to parse extraN
public class TikaDocTests extends OpenSearchTestCase {

/** some test files from tika test suite, zipped up */
/** some test files from the apache tika unit test suite with accompanying sha1 checksums */
static final String TIKA_FILES = "/org/opensearch/ingest/attachment/test/tika-files/";
static final String TIKA_CHECKSUMS = "/org/opensearch/ingest/attachment/test/.checksums";

public void testFiles() throws Exception {
Path tmp = createTempDir();
logger.debug("unzipping all tika sample files");
try (DirectoryStream<Path> stream = Files.newDirectoryStream(PathUtils.get(getClass().getResource(TIKA_FILES).toURI()))) {
for (Path doc : stream) {
String filename = doc.getFileName().toString();
TestUtil.unzip(getClass().getResourceAsStream(TIKA_FILES + filename), tmp);
}
}
public void testParseSamples() throws Exception {
String checksumJson = Files.readString(PathUtils.get(getClass().getResource(TIKA_CHECKSUMS).toURI()));
Map<String, Object> checksums = XContentHelper.convertToMap(JsonXContent.jsonXContent, checksumJson, false);
DirectoryStream<Path> stream = Files.newDirectoryStream(unzipToTemp(TIKA_FILES));

try (DirectoryStream<Path> stream = Files.newDirectoryStream(tmp)) {
for (Path doc : stream) {
logger.debug("parsing: {}", doc);
assertParseable(doc);
for (Path doc : stream) {
String parsedContent = tryParse(doc);
assertNotNull(parsedContent);
assertFalse(parsedContent.isEmpty());

String check = checksums.get(doc.getFileName().toString()).toString();
if (!check.isEmpty()) {
assertEquals(check, DigestUtils.sha1Hex(parsedContent));
}
}

stream.close();
}

void assertParseable(Path fileName) throws Exception {
try {
byte bytes[] = Files.readAllBytes(fileName);
String parsedContent = TikaImpl.parse(bytes, new Metadata(), -1);
assertNotNull(parsedContent);
assertFalse(parsedContent.isEmpty());
logger.debug("extracted content: {}", parsedContent);
} catch (Exception e) {
throw new RuntimeException("parsing of filename: " + fileName.getFileName() + " failed", e);
private Path unzipToTemp(String zipDir) throws Exception {
Path tmp = createTempDir();
DirectoryStream<Path> stream = Files.newDirectoryStream(PathUtils.get(getClass().getResource(zipDir).toURI()));

for (Path doc : stream) {
String filename = doc.getFileName().toString();
TestUtil.unzip(getClass().getResourceAsStream(zipDir + filename), tmp);
}

stream.close();
return tmp;
}

private String tryParse(Path doc) throws Exception {
byte bytes[] = Files.readAllBytes(doc);
return TikaImpl.parse(bytes, new Metadata(), -1);
}
}
209 changes: 209 additions & 0 deletions ...ins/ingest-attachment/src/test/resources/org/opensearch/ingest/attachment/test/.checksums
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}

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