138 lines
4.7 KiB
C++
138 lines
4.7 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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#ifdef __ANDROID__
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#include <spdlog/details/fmt_helper.h>
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#include <spdlog/details/null_mutex.h>
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#include <spdlog/details/os.h>
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#include <spdlog/details/synchronous_factory.h>
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#include <spdlog/sinks/base_sink.h>
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#include <android/log.h>
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#include <chrono>
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#include <mutex>
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#include <string>
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#include <thread>
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#include <type_traits>
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#if !defined(SPDLOG_ANDROID_RETRIES)
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#define SPDLOG_ANDROID_RETRIES 2
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#endif
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namespace spdlog {
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namespace sinks {
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/*
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* Android sink
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* (logging using __android_log_write or __android_log_buf_write depending on the specified
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* BufferID)
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*/
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template <typename Mutex, int BufferID = log_id::LOG_ID_MAIN>
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class android_sink final : public base_sink<Mutex> {
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public:
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explicit android_sink(std::string tag = "spdlog", bool use_raw_msg = false)
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: tag_(std::move(tag)),
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use_raw_msg_(use_raw_msg) {}
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protected:
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void sink_it_(const details::log_msg &msg) override {
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const android_LogPriority priority = convert_to_android_(msg.level);
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memory_buf_t formatted;
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if (use_raw_msg_) {
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details::fmt_helper::append_string_view(msg.payload, formatted);
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} else {
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base_sink<Mutex>::formatter_->format(msg, formatted);
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}
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formatted.push_back('\0');
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const char *msg_output = formatted.data();
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// See system/core/liblog/logger_write.c for explanation of return value
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int ret = android_log(priority, tag_.c_str(), msg_output);
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if (ret == -EPERM) {
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return; // !__android_log_is_loggable
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}
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int retry_count = 0;
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while ((ret == -11 /*EAGAIN*/) && (retry_count < SPDLOG_ANDROID_RETRIES)) {
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details::os::sleep_for_millis(5);
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ret = android_log(priority, tag_.c_str(), msg_output);
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retry_count++;
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}
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if (ret < 0) {
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throw_spdlog_ex("logging to Android failed", ret);
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}
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}
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void flush_() override {}
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private:
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// There might be liblog versions used, that do not support __android_log_buf_write. So we only
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// compile and link against
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// __android_log_buf_write, if user explicitly provides a non-default log buffer. Otherwise,
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// when using the default log buffer, always log via __android_log_write.
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template <int ID = BufferID>
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typename std::enable_if<ID == static_cast<int>(log_id::LOG_ID_MAIN), int>::type android_log(
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int prio, const char *tag, const char *text) {
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return __android_log_write(prio, tag, text);
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}
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template <int ID = BufferID>
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typename std::enable_if<ID != static_cast<int>(log_id::LOG_ID_MAIN), int>::type android_log(
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int prio, const char *tag, const char *text) {
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return __android_log_buf_write(ID, prio, tag, text);
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}
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static android_LogPriority convert_to_android_(spdlog::level::level_enum level) {
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switch (level) {
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case spdlog::level::trace:
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return ANDROID_LOG_VERBOSE;
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case spdlog::level::debug:
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return ANDROID_LOG_DEBUG;
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case spdlog::level::info:
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return ANDROID_LOG_INFO;
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case spdlog::level::warn:
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return ANDROID_LOG_WARN;
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case spdlog::level::err:
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return ANDROID_LOG_ERROR;
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case spdlog::level::critical:
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return ANDROID_LOG_FATAL;
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default:
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return ANDROID_LOG_DEFAULT;
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}
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}
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std::string tag_;
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bool use_raw_msg_;
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};
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using android_sink_mt = android_sink<std::mutex>;
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using android_sink_st = android_sink<details::null_mutex>;
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template <int BufferId = log_id::LOG_ID_MAIN>
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using android_sink_buf_mt = android_sink<std::mutex, BufferId>;
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template <int BufferId = log_id::LOG_ID_MAIN>
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using android_sink_buf_st = android_sink<details::null_mutex, BufferId>;
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} // namespace sinks
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// Create and register android syslog logger
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template <typename Factory = spdlog::synchronous_factory>
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inline std::shared_ptr<logger> android_logger_mt(const std::string &logger_name,
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const std::string &tag = "spdlog") {
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return Factory::template create<sinks::android_sink_mt>(logger_name, tag);
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}
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template <typename Factory = spdlog::synchronous_factory>
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inline std::shared_ptr<logger> android_logger_st(const std::string &logger_name,
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const std::string &tag = "spdlog") {
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return Factory::template create<sinks::android_sink_st>(logger_name, tag);
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}
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} // namespace spdlog
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#endif // __ANDROID__
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