Reorganize folder structure.

example/rest_book_async_client/CMakeLists.txt

@@ -0,0 +1,4 @@
+add_executable(rest_book_async_client main.cc)
+
+target_link_libraries(rest_book_async_client webcc jsoncpp ${Boost_LIBRARIES})
+target_link_libraries(rest_book_async_client "${CMAKE_THREAD_LIBS_INIT}")

example/rest_book_async_client/main.cc

@@ -0,0 +1,138 @@
+#include <iostream>
+
+#include "json/json.h"
+
+#include "webcc/logger.h"
+#include "webcc/async_rest_client.h"
+
+// -----------------------------------------------------------------------------
+
+// Write a JSON object to string.
+std::string JsonToString(const Json::Value& json) {
+  Json::StreamWriterBuilder builder;
+  return Json::writeString(builder, json);
+}
+
+// -----------------------------------------------------------------------------
+
+class BookListClient {
+ public:
+  BookListClient(boost::asio::io_context& io_context,
+                 const std::string& host, const std::string& port)
+      : rest_client_(io_context, host, port) {
+  }
+
+  void ListBooks(webcc::HttpResponseHandler handler) {
+    std::cout << "ListBooks" << std::endl;
+
+    rest_client_.Get("/books", handler);
+  }
+
+  void CreateBook(const std::string& id,
+                  const std::string& title,
+                  double price,
+                  webcc::HttpResponseHandler handler) {
+    std::cout << "CreateBook: " << id << " " << title << " " << price
+              << std::endl;
+
+    Json::Value json(Json::objectValue);
+    json["id"] = id;
+    json["title"] = title;
+    json["price"] = price;
+
+    rest_client_.Post("/books", JsonToString(json), handler);
+  }
+
+ private:
+  webcc::AsyncRestClient rest_client_;
+};
+
+// -----------------------------------------------------------------------------
+
+class BookDetailClient {
+public:
+  BookDetailClient(boost::asio::io_context& io_context,
+                   const std::string& host, const std::string& port)
+      : rest_client_(io_context, host, port) {
+  }
+
+  void GetBook(const std::string& id, webcc::HttpResponseHandler handler) {
+    std::cout << "GetBook: " << id << std::endl;
+
+    rest_client_.Get("/book/" + id, handler);
+  }
+
+  void UpdateBook(const std::string& id,
+                  const std::string& title,
+                  double price,
+                  webcc::HttpResponseHandler handler) {
+    std::cout << "UpdateBook: " << id << " " << title << " " << price
+              << std::endl;
+
+    // NOTE: ID is already in the URL.
+    Json::Value json(Json::objectValue);
+    json["title"] = title;
+    json["price"] = price;
+
+    rest_client_.Put("/book/" + id, JsonToString(json), handler);
+  }
+
+  void DeleteBook(const std::string& id, webcc::HttpResponseHandler handler) {
+    std::cout << "DeleteBook: " << id << std::endl;
+
+    rest_client_.Delete("/book/" + id, handler);
+  }
+
+private:
+  webcc::AsyncRestClient rest_client_;
+};
+
+// -----------------------------------------------------------------------------
+
+void Help(const char* argv0) {
+  std::cout << "Usage: " << argv0 << " <host> <port>" << std::endl;
+  std::cout << "  E.g.," << std::endl;
+  std::cout << "    " << argv0 << " localhost 8080" << std::endl;
+}
+
+int main(int argc, char* argv[]) {
+  if (argc != 3) {
+    Help(argv[0]);
+    return 1;
+  }
+
+  WEBCC_LOG_INIT("", webcc::LOG_CONSOLE);
+
+  std::string host = argv[1];
+  std::string port = argv[2];
+
+  boost::asio::io_context io_context;
+
+  BookListClient list_client(io_context, host, port);
+  BookDetailClient detail_client(io_context, host, port);
+
+  // Response handler.
+  auto handler = [](std::shared_ptr<webcc::HttpResponse> response,
+                    webcc::Error error,
+                    bool timed_out) {
+    if (error == webcc::kNoError) {
+      std::cout << response->content() << std::endl;
+    } else {
+      std::cout << webcc::DescribeError(error) << std::endl;
+    }
+  };
+
+  list_client.ListBooks(handler);
+  list_client.CreateBook("1", "1984", 12.3, handler);
+
+  detail_client.GetBook("1", handler);
+  detail_client.UpdateBook("1", "1Q84", 32.1, handler);
+  detail_client.GetBook("1", handler);
+  detail_client.DeleteBook("1", handler);
+
+  list_client.ListBooks(handler);
+
+  io_context.run();
+
+  return 0;
+}