Add retry support for failed LP requests

src/launchpad.cpp

@@ -257,26 +257,33 @@ std::optional<std::string> launchpad::api_get(const std::string& endpoint, const
     curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
     curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);
 
-    CURLcode res = curl_easy_perform(curl);
+    bool tries = 0;
     long http_code = 0;
-    if (res != CURLE_OK) {
-        std::cerr << "CURL GET error: " << curl_easy_strerror(res) << std::endl;
-    }
 
-    curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &http_code);
-    curl_slist_free_all(headers);
-    curl_easy_cleanup(curl);
+    while (tries < 5) {
+        tries++;
+        CURLcode res = curl_easy_perform(curl);
+        if (res != CURLE_OK) {
+            std::cerr << "CURL GET error: " << curl_easy_strerror(res) << std::endl;
+        }
 
-    if (res != CURLE_OK) {
-        return std::nullopt;
-    }
+        curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &http_code);
+        curl_slist_free_all(headers);
+        curl_easy_cleanup(curl);
 
-    if (http_code >= 400) {
-        std::cerr << "HTTP GET request to " << url << " failed with code: " << http_code << "\nResponse: " << readBuffer << std::endl;
-        return std::nullopt;
+        if (res != CURLE_OK) {
+            continue;
+        }
+
+        if (http_code >= 400) {
+            continue;
+        }
+
+        return readBuffer;
     }
 
-    return readBuffer;
+    std::cerr << "HTTP GET request to " << url << " failed with code: " << http_code << "\nResponse: " << readBuffer << std::endl;
+    return std::nullopt;
 }
 
 std::optional<std::string> launchpad::api_post(
@@ -327,26 +334,32 @@ std::optional<std::string> launchpad::api_post(
     curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
     curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);
 
-    CURLcode res = curl_easy_perform(curl);
+    bool tries = 0;
     long http_code = 0;
-    if (res != CURLE_OK) {
-        std::cerr << "CURL POST error: " << curl_easy_strerror(res) << std::endl;
-    }
 
-    curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &http_code);
-    curl_slist_free_all(headers);
-    curl_easy_cleanup(curl);
+    while (tries < 5) {
+        tries++;
+        CURLcode res = curl_easy_perform(curl);
+        if (res != CURLE_OK) {
+            std::cerr << "CURL POST error: " << curl_easy_strerror(res) << std::endl;
+        }
 
-    if (res != CURLE_OK) {
-        return std::nullopt;
-    }
+        curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &http_code);
+        curl_slist_free_all(headers);
+        curl_easy_cleanup(curl);
 
-    if (http_code >= 400) {
-        std::cerr << "HTTP POST request to " << url << " failed with code: " << http_code << "\nResponse: " << readBuffer << std::endl;
-        return std::nullopt;
-    }
+        if (res != CURLE_OK) {
+            continue;
+        }
 
-    return readBuffer;
+        if (http_code >= 400) {
+            continue;
+        }
+
+        return readBuffer;
+    }
+    std::cerr << "HTTP POST request to " << url << " failed with code: " << http_code << "\nResponse: " << readBuffer << std::endl;
+    return std::nullopt;
 }
 
 std::optional<std::string> launchpad::api_patch(const std::string& endpoint, const nlohmann::json& data) {