91 lines
3.1 KiB
C++
91 lines
3.1 KiB
C++
// Copyright 2021 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://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, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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#include "pw_log/proto_utils.h"
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#include <span>
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#include <string_view>
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#include "pw_bytes/endian.h"
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#include "pw_log/levels.h"
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#include "pw_log_tokenized/metadata.h"
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#include "pw_protobuf/wire_format.h"
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namespace pw::log {
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Result<ConstByteSpan> EncodeLog(int level,
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unsigned int flags,
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std::string_view module_name,
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std::string_view thread_name,
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std::string_view file_name,
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int line_number,
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int64_t ticks_since_epoch,
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std::string_view message,
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ByteSpan encode_buffer) {
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// Encode message to the LogEntry protobuf.
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LogEntry::MemoryEncoder encoder(encode_buffer);
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if (message.empty()) {
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return Status::InvalidArgument();
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}
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// Defer status checks until the end.
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Status status = encoder.WriteMessage(std::as_bytes(std::span(message)));
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status = encoder.WriteLineLevel(PackLineLevel(line_number, level));
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if (flags != 0) {
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status = encoder.WriteFlags(flags);
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}
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status = encoder.WriteTimestamp(ticks_since_epoch);
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// Module name and file name may or may not be present.
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if (!module_name.empty()) {
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status = encoder.WriteModule(std::as_bytes(std::span(module_name)));
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}
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if (!file_name.empty()) {
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status = encoder.WriteFile(std::as_bytes(std::span(file_name)));
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}
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if (!thread_name.empty()) {
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status = encoder.WriteThread(std::as_bytes(std::span(thread_name)));
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}
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PW_TRY(encoder.status());
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return ConstByteSpan(encoder);
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}
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LogEntry::MemoryEncoder CreateEncoderAndEncodeTokenizedLog(
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pw::log_tokenized::Metadata metadata,
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ConstByteSpan tokenized_data,
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int64_t ticks_since_epoch,
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ByteSpan encode_buffer) {
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// Encode message to the LogEntry protobuf.
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LogEntry::MemoryEncoder encoder(encode_buffer);
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// Defer status checks until the end.
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Status status = encoder.WriteMessage(tokenized_data);
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status = encoder.WriteLineLevel(
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PackLineLevel(metadata.line_number(), metadata.level()));
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if (metadata.flags() != 0) {
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status = encoder.WriteFlags(metadata.flags());
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}
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status = encoder.WriteTimestamp(ticks_since_epoch);
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if (metadata.module() != 0) {
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const uint32_t little_endian_module =
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bytes::ConvertOrderTo(std::endian::little, metadata.module());
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status =
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encoder.WriteModule(std::as_bytes(std::span(&little_endian_module, 1)));
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}
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return encoder;
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}
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} // namespace pw::log
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