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package com.yahoo.vespa.hadoop.util;
import com.fasterxml.jackson.core.JsonEncoding;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import java.net.URLDecoder;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MockQueryHandler implements HttpHandler {
private final Map<String, List<MockQueryHit>> hitMap;
private final String childNode;
public MockQueryHandler(String childNode) {
this.hitMap = new HashMap<>();
this.childNode = childNode;
}
public void handle(HttpExchange t) throws IOException {
URI uri = t.getRequestURI();
String query = uri.getQuery();
String response = null;
// Parse query - extract "query" element
if (query != null) {
String params[] = query.split("[&]");
for (String param : params) {
int i = param.indexOf('=');
String name = param.substring(0, i);
String value = URLDecoder.decode(param.substring(i + 1), "UTF-8");
if ("query".equalsIgnoreCase(name)) {
response = getResponse(URLDecoder.decode(param.substring(i + 1), "UTF-8"));
}
}
}
t.sendResponseHeaders(200, response == null ? 0 : response.length());
OutputStream os = t.getResponseBody();
os.write(response == null ? "".getBytes() : response.getBytes());
os.close();
}
public MockQueryHit getHit(String query, Integer rank) {
if (!hitMap.containsKey(query)) {
return null;
}
if (rank >= hitMap.get(query).size()) {
return null;
}
return hitMap.get(query).get(rank);
}
public MockQueryHit newHit() {
return new MockQueryHit(this);
}
public void addHit(String query, MockQueryHit hit) {
if (!hitMap.containsKey(query)) {
hitMap.put(query, new ArrayList<>());
}
hitMap.get(query).add(hit);
}
private String getResponse(String query) throws IOException {
List<MockQueryHit> hits = hitMap.get(query);
if (hits == null) {
return null;
}
ByteArrayOutputStream out = new ByteArrayOutputStream();
JsonGenerator g = new JsonFactory().createGenerator(out, JsonEncoding.UTF8);
writeResultStart(g, hits.size());
for (MockQueryHit hit : hits) {
writeHit(g, hit);
}
writeResultsEnd(g);
g.close();
return out.toString();
}
private void writeHit(JsonGenerator g, MockQueryHit hit) throws IOException {
g.writeStartObject();
g.writeFieldName("id");
g.writeString(hit.id);
g.writeFieldName("relevance");
g.writeNumber(hit.relevance);
g.writeFieldName("fields");
g.writeStartObject();
g.writeFieldName("sddocname");
g.writeString(hit.fieldSddocname);
g.writeFieldName("date");
g.writeString(hit.fieldDate);
g.writeFieldName("content");
g.writeString(hit.fieldContent);
g.writeFieldName("id");
g.writeString(hit.fieldId);
g.writeEndObject();
g.writeEndObject();
}
private void writeResultStart(JsonGenerator g, int count) throws IOException {
g.writeStartObject();
g.writeFieldName("root");
g.writeStartObject();
g.writeFieldName("id");
g.writeString("toplevel");
g.writeFieldName("relevance");
g.writeNumber(1);
g.writeFieldName("fields");
g.writeStartObject();
g.writeFieldName("totalCount");
g.writeNumber(count);
g.writeEndObject();
g.writeFieldName("coverage");
g.writeStartObject();
g.writeFieldName("coverage");
g.writeNumber(100);
// ... more stuff here usually
g.writeEndObject();
g.writeFieldName("children");
g.writeStartArray();
if (!childNode.isEmpty()) {
g.writeStartObject();
g.writeFieldName(childNode);
g.writeStartArray();
}
}
private void writeResultsEnd(JsonGenerator g) throws IOException {
if (!childNode.isEmpty()) {
g.writeEndArray();
g.writeEndObject();
}
g.writeEndArray();
g.writeEndObject();
g.writeEndObject();
}
public static class MockQueryHit {
private final MockQueryHandler handler;
public String id;
public Double relevance;
public String fieldSddocname;
public String fieldDate;
public String fieldContent;
public String fieldId;
private MockQueryHit(MockQueryHandler handler) {
this.handler = handler;
}
public void add(String query) {
handler.addHit(query, this);
}
public MockQueryHit setId(String id) {
this.id = id;
return this;
}
public MockQueryHit setRelevance(Double relevance) {
this.relevance = relevance;
return this;
}
public MockQueryHit setFieldSddocname(String fieldSddocname) {
this.fieldSddocname = fieldSddocname;
return this;
}
public MockQueryHit setFieldDate(String fieldDate) {
this.fieldDate = fieldDate;
return this;
}
public MockQueryHit setFieldContent(String fieldContent) {
this.fieldContent = fieldContent;
return this;
}
public MockQueryHit setFieldId(String fieldId) {
this.fieldId = fieldId;
return this;
}
}
}
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