+/*
+ * Copyright 2004-present Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <folly/experimental/logging/StandardLogHandlerFactory.h>
+
+#include <folly/MapUtil.h>
+#include <folly/String.h>
+#include <folly/experimental/logging/GlogStyleFormatter.h>
+#include <folly/experimental/logging/StandardLogHandler.h>
+
+using std::string;
+
+namespace folly {
+
+class GlogFormatterFactory
+ : public StandardLogHandlerFactory::FormatterFactory {
+ public:
+ bool processOption(StringPiece /* name */, StringPiece /* value */) override {
+ return false;
+ }
+ std::shared_ptr<LogFormatter> createFormatter() override {
+ return std::make_shared<GlogStyleFormatter>();
+ }
+};
+
+std::shared_ptr<StandardLogHandler> StandardLogHandlerFactory::createHandler(
+ StringPiece type,
+ WriterFactory* writerFactory,
+ const Options& options) {
+ std::unique_ptr<FormatterFactory> formatterFactory;
+
+ // Get the log formatter type
+ auto* formatterType = get_ptr(options, "formatter");
+ if (!formatterType || *formatterType == "glog") {
+ formatterFactory = std::make_unique<GlogFormatterFactory>();
+ } else {
+ throw std::invalid_argument(
+ to<string>("unknown log formatter type \"", *formatterType, "\""));
+ }
+
+ // Process the log formatter and log handler options
+ std::vector<string> errors;
+ for (const auto& entry : options) {
+ bool handled = false;
+ try {
+ // Allow both the formatterFactory and writerFactory to consume an
+ // option. In general they probably should have mutually exclusive
+ // option names, but we don't give precedence to one over the other here.
+ handled |= formatterFactory->processOption(entry.first, entry.second);
+ handled |= writerFactory->processOption(entry.first, entry.second);
+ } catch (const std::exception& ex) {
+ errors.push_back(to<string>(
+ "error processing option \"", entry.first, "\": ", ex.what()));
+ continue;
+ }
+
+ // We explicitly processed the "formatter" option above.
+ handled |= handled || (entry.first == "formatter");
+
+ // Complain about unknown options.
+ if (!handled) {
+ errors.push_back(to<string>("unknown option \"", entry.first, "\""));
+ }
+ }
+
+ if (!errors.empty()) {
+ throw std::invalid_argument(join(", ", errors));
+ }
+
+ // Construct the formatter and writer
+ auto formatter = formatterFactory->createFormatter();
+ auto writer = writerFactory->createWriter();
+
+ return std::make_shared<StandardLogHandler>(
+ LogHandlerConfig{type, options}, formatter, writer);
+}
+
+} // namespace folly
projects / folly.git / commitdiff