47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
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// Distributed under the MIT License (http://opensource.org/licenses/MIT)
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#pragma once
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#include <map>
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#include <string>
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#include <spdlog/common.h>
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// MDC is a simple map of key->string values stored in thread local storage whose content will be printed by the loggers.
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// Note: Not supported in async mode (thread local storage - so the async thread pool have different copy).
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//
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// Usage example:
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// spdlog::mdc::put("mdc_key_1", "mdc_value_1");
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// spdlog::info("Hello, {}", "World!"); // => [2024-04-26 02:08:05.040] [info] [mdc_key_1:mdc_value_1] Hello, World!
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namespace spdlog {
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class SPDLOG_API mdc {
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public:
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using mdc_map_t = std::map<std::string, std::string>;
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static void put(const std::string &key, const std::string &value) {
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get_context()[key] = value;
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}
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static std::string get(const std::string &key) {
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auto &context = get_context();
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auto it = context.find(key);
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if (it != context.end()) {
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return it->second;
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}
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return "";
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}
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static void remove(const std::string &key) { get_context().erase(key); }
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static void clear() { get_context().clear(); }
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static mdc_map_t &get_context() {
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static thread_local mdc_map_t context;
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return context;
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}
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};
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} // namespace spdlog
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