Create one method per file

pipeline/src/web_client/curl_web_client_get.cpp

@@ -0,0 +1,75 @@
+/**
+ * @file web_client/curl_web_client_get.cpp
+ * @brief CURLWebClient::Get() implementation.
+ */
+
+#include <curl/curl.h>
+
+#include <memory>
+#include <sstream>
+#include <stdexcept>
+#include <string>
+
+#include "web_client/curl_web_client.h"
+
+namespace {
+// RAII wrapper for CURL handle using unique_ptr
+using CurlHandle = std::unique_ptr<CURL, decltype(&curl_easy_cleanup)>;
+
+CurlHandle create_handle() {
+   CURL* handle = curl_easy_init();
+   if (!handle) {
+      throw std::runtime_error(
+          "[CURLWebClient] Failed to initialize libcurl handle");
+   }
+   return CurlHandle(handle, &curl_easy_cleanup);
+}
+
+void set_common_get_options(CURL* curl, const std::string& url,
+                            long connect_timeout, long total_timeout) {
+   curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
+   curl_easy_setopt(curl, CURLOPT_USERAGENT, "biergarten-pipeline/0.1.0");
+   curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
+   curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 5L);
+   curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, connect_timeout);
+   curl_easy_setopt(curl, CURLOPT_TIMEOUT, total_timeout);
+   curl_easy_setopt(curl, CURLOPT_ACCEPT_ENCODING, "gzip");
+}
+
+// curl write callback that appends response data into a std::string
+size_t WriteCallbackString(void* contents, size_t size, size_t nmemb,
+                           void* userp) {
+   size_t realsize = size * nmemb;
+   auto* s = static_cast<std::string*>(userp);
+   s->append(static_cast<char*>(contents), realsize);
+   return realsize;
+}
+}  // namespace
+
+std::string CURLWebClient::Get(const std::string& url) {
+   auto curl = create_handle();
+
+   std::string response_string;
+   set_common_get_options(curl.get(), url, 10L, 20L);
+   curl_easy_setopt(curl.get(), CURLOPT_WRITEFUNCTION, WriteCallbackString);
+   curl_easy_setopt(curl.get(), CURLOPT_WRITEDATA, &response_string);
+
+   CURLcode res = curl_easy_perform(curl.get());
+
+   if (res != CURLE_OK) {
+      std::string error =
+          std::string("[CURLWebClient] GET failed: ") + curl_easy_strerror(res);
+      throw std::runtime_error(error);
+   }
+
+   long httpCode = 0;
+   curl_easy_getinfo(curl.get(), CURLINFO_RESPONSE_CODE, &httpCode);
+
+   if (httpCode != 200) {
+      std::stringstream ss;
+      ss << "[CURLWebClient] HTTP error " << httpCode << " for URL " << url;
+      throw std::runtime_error(ss.str());
+   }
+
+   return response_string;
+}