Refine timeout control; refine rest book examples.

example/common/book_json.cc

@@ -0,0 +1,52 @@
+#include "example/common/book_json.h"
+
+#include <sstream>
+#include <iostream>
+
+#include "json/json.h"
+
+#include "example/common/book.h"
+
+std::string JsonToString(const Json::Value& json) {
+  Json::StreamWriterBuilder builder;
+  return Json::writeString(builder, json);
+}
+
+Json::Value StringToJson(const std::string& str) {
+  Json::Value json;
+
+  Json::CharReaderBuilder builder;
+  std::stringstream stream(str);
+  std::string errs;
+  if (!Json::parseFromStream(builder, stream, &json, &errs)) {
+    std::cerr << errs << std::endl;
+  }
+
+  return json;
+}
+
+Json::Value BookToJson(const Book& book) {
+  Json::Value root;
+  root["id"] = book.id;
+  root["title"] = book.title;
+  root["price"] = book.price;
+  return root;
+}
+
+std::string BookToJsonString(const Book& book) {
+  return JsonToString(BookToJson(book));
+}
+
+bool JsonStringToBook(const std::string& json_str, Book* book) {
+  Json::Value json = StringToJson(json_str);
+
+  if (!json) {
+    return false;
+  }
+
+  book->id = json["id"].asString();
+  book->title = json["title"].asString();
+  book->price = json["price"].asDouble();
+
+  return true;
+}

example/common/book_json.h

@@ -0,0 +1,19 @@
+#ifndef EXAMPLE_COMMON_BOOK_JSON_H_
+#define EXAMPLE_COMMON_BOOK_JSON_H_
+
+#include <string>
+
+#include "json/json-forwards.h"
+
+struct Book;
+
+std::string JsonToString(const Json::Value& json);
+
+Json::Value StringToJson(const std::string& str);
+
+Json::Value BookToJson(const Book& book);
+
+std::string BookToJsonString(const Book& book);
+bool JsonStringToBook(const std::string& json_str, Book* book);
+
+#endif  // EXAMPLE_COMMON_BOOK_JSON_H_