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/*
* 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.rest;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.ExceptionsHelper;
import org.elasticsearch.action.search.SearchPhaseExecutionException;
import org.elasticsearch.action.search.ShardSearchFailure;
import org.elasticsearch.common.ParsingException;
import org.elasticsearch.index.Index;
import org.elasticsearch.search.SearchShardTarget;
import org.elasticsearch.test.ESTestCase;
import org.elasticsearch.test.rest.FakeRestRequest;
import org.elasticsearch.transport.RemoteTransportException;
import java.io.FileNotFoundException;
import java.io.IOException;
import static org.hamcrest.Matchers.contains;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.not;
import static org.hamcrest.Matchers.notNullValue;
/**
*
*/
public class BytesRestResponseTests extends ESTestCase {
public void testWithHeaders() throws Exception {
RestRequest request = new FakeRestRequest();
RestChannel channel = randomBoolean() ? new DetailedExceptionRestChannel(request) : new SimpleExceptionRestChannel(request);
BytesRestResponse response = new BytesRestResponse(channel, new WithHeadersException());
assertThat(response.getHeaders().get("n1"), notNullValue());
assertThat(response.getHeaders().get("n1"), contains("v11", "v12"));
assertThat(response.getHeaders().get("n2"), notNullValue());
assertThat(response.getHeaders().get("n2"), contains("v21", "v22"));
}
public void testSimpleExceptionMessage() throws Exception {
RestRequest request = new FakeRestRequest();
RestChannel channel = new SimpleExceptionRestChannel(request);
Throwable t = new ElasticsearchException("an error occurred reading data", new FileNotFoundException("/foo/bar"));
BytesRestResponse response = new BytesRestResponse(channel, t);
String text = response.content().toUtf8();
assertThat(text, containsString("ElasticsearchException[an error occurred reading data]"));
assertThat(text, not(containsString("FileNotFoundException")));
assertThat(text, not(containsString("/foo/bar")));
assertThat(text, not(containsString("error_trace")));
}
public void testDetailedExceptionMessage() throws Exception {
RestRequest request = new FakeRestRequest();
RestChannel channel = new DetailedExceptionRestChannel(request);
Throwable t = new ElasticsearchException("an error occurred reading data", new FileNotFoundException("/foo/bar"));
BytesRestResponse response = new BytesRestResponse(channel, t);
String text = response.content().toUtf8();
assertThat(text, containsString("{\"type\":\"exception\",\"reason\":\"an error occurred reading data\"}"));
assertThat(text, containsString("{\"type\":\"file_not_found_exception\",\"reason\":\"/foo/bar\"}"));
}
public void testNonElasticsearchExceptionIsNotShownAsSimpleMessage() throws Exception {
RestRequest request = new FakeRestRequest();
RestChannel channel = new SimpleExceptionRestChannel(request);
Throwable t = new Throwable("an error occurred reading data", new FileNotFoundException("/foo/bar"));
BytesRestResponse response = new BytesRestResponse(channel, t);
String text = response.content().toUtf8();
assertThat(text, not(containsString("Throwable[an error occurred reading data]")));
assertThat(text, not(containsString("FileNotFoundException[/foo/bar]")));
assertThat(text, not(containsString("error_trace")));
assertThat(text, containsString("\"error\":\"No ElasticsearchException found\""));
}
public void testErrorTrace() throws Exception {
RestRequest request = new FakeRestRequest();
request.params().put("error_trace", "true");
RestChannel channel = new DetailedExceptionRestChannel(request);
Throwable t = new Throwable("an error occurred reading data", new FileNotFoundException("/foo/bar"));
BytesRestResponse response = new BytesRestResponse(channel, t);
String text = response.content().toUtf8();
assertThat(text, containsString("\"type\":\"throwable\",\"reason\":\"an error occurred reading data\""));
assertThat(text, containsString("{\"type\":\"file_not_found_exception\""));
assertThat(text, containsString("\"stack_trace\":\"[an error occurred reading data]"));
}
public void testGuessRootCause() throws IOException {
RestRequest request = new FakeRestRequest();
RestChannel channel = new DetailedExceptionRestChannel(request);
{
Throwable t = new ElasticsearchException("an error occurred reading data", new FileNotFoundException("/foo/bar"));
BytesRestResponse response = new BytesRestResponse(channel, t);
String text = response.content().toUtf8();
assertThat(text, containsString("{\"root_cause\":[{\"type\":\"exception\",\"reason\":\"an error occurred reading data\"}]"));
}
{
Throwable t = new FileNotFoundException("/foo/bar");
BytesRestResponse response = new BytesRestResponse(channel, t);
String text = response.content().toUtf8();
assertThat(text, containsString("{\"root_cause\":[{\"type\":\"file_not_found_exception\",\"reason\":\"/foo/bar\"}]"));
}
}
public void testNullThrowable() throws Exception {
RestRequest request = new FakeRestRequest();
RestChannel channel = new SimpleExceptionRestChannel(request);
BytesRestResponse response = new BytesRestResponse(channel, null);
String text = response.content().toUtf8();
assertThat(text, containsString("\"error\":\"unknown\""));
assertThat(text, not(containsString("error_trace")));
}
public void testConvert() throws IOException {
RestRequest request = new FakeRestRequest();
RestChannel channel = new DetailedExceptionRestChannel(request);
ShardSearchFailure failure = new ShardSearchFailure(new ParsingException(1, 2, "foobar", null),
new SearchShardTarget("node_1", new Index("foo", "_na_"), 1));
ShardSearchFailure failure1 = new ShardSearchFailure(new ParsingException(1, 2, "foobar", null),
new SearchShardTarget("node_1", new Index("foo", "_na_"), 2));
SearchPhaseExecutionException ex = new SearchPhaseExecutionException("search", "all shards failed", new ShardSearchFailure[] {failure, failure1});
BytesRestResponse response = new BytesRestResponse(channel, new RemoteTransportException("foo", ex));
String text = response.content().toUtf8();
String expected = "{\"error\":{\"root_cause\":[{\"type\":\"parsing_exception\",\"reason\":\"foobar\",\"line\":1,\"col\":2}],\"type\":\"search_phase_execution_exception\",\"reason\":\"all shards failed\",\"phase\":\"search\",\"grouped\":true,\"failed_shards\":[{\"shard\":1,\"index\":\"foo\",\"node\":\"node_1\",\"reason\":{\"type\":\"parsing_exception\",\"reason\":\"foobar\",\"line\":1,\"col\":2}}]},\"status\":400}";
assertEquals(expected.trim(), text.trim());
String stackTrace = ExceptionsHelper.stackTrace(ex);
assertTrue(stackTrace.contains("Caused by: ParsingException[foobar]"));
}
public static class WithHeadersException extends ElasticsearchException {
WithHeadersException() {
super("");
this.addHeader("n1", "v11", "v12");
this.addHeader("n2", "v21", "v22");
}
}
private static class SimpleExceptionRestChannel extends RestChannel {
SimpleExceptionRestChannel(RestRequest request) {
super(request, false);
}
@Override
public void sendResponse(RestResponse response) {
}
}
private static class DetailedExceptionRestChannel extends RestChannel {
DetailedExceptionRestChannel(RestRequest request) {
super(request, true);
}
@Override
public void sendResponse(RestResponse response) {
}
}
}
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