69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <folly/logging/Init.h>
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#include <folly/logging/LogConfig.h>
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#include <folly/logging/LogConfigParser.h>
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#include <folly/logging/LoggerDB.h>
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#include <folly/logging/StreamHandlerFactory.h>
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namespace folly {
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void initLogging(StringPiece configString) {
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// Get the base logging configuration
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auto* const baseConfigStr = getBaseLoggingConfig();
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// Return early if we have nothing to do
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if (!baseConfigStr && configString.empty()) {
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return;
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}
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// Parse the configuration string(s)
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LogConfig config;
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if (baseConfigStr) {
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config = parseLogConfig(baseConfigStr);
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if (!configString.empty()) {
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config.update(parseLogConfig(configString));
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}
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} else {
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config = parseLogConfig(configString);
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}
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// Apply the config settings
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LoggerDB::get().updateConfig(config);
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}
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void initLoggingOrDie(StringPiece configString) {
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try {
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initLogging(configString);
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} catch (const std::exception& ex) {
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// Print the error message. We intentionally use ex.what() here instead
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// of folly::exceptionStr() to avoid including the exception type name in
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// the output. The exceptions thrown by the logging library on error
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// should have enough information to diagnose what is wrong with the
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// input config string.
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//
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// We want the output here to be user-friendly since this will be shown
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// to any user invoking a program with an error in the logging
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// configuration string. This output is intended for end users rather
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// than developers.
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fprintf(stderr, "error parsing logging configuration: %s\n", ex.what());
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exit(1);
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}
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}
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} // namespace folly
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