| // Copyright 2021 The Pigweed Authors |
| // |
| // 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 |
| // |
| // https://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 "pw_log/proto_utils.h" |
| |
| #include <string_view> |
| |
| #include "pw_bytes/endian.h" |
| #include "pw_log/levels.h" |
| #include "pw_log_tokenized/metadata.h" |
| #include "pw_protobuf/wire_format.h" |
| #include "pw_span/span.h" |
| |
| namespace pw::log { |
| |
| Result<ConstByteSpan> EncodeLog(int level, |
| unsigned int flags, |
| std::string_view module_name, |
| std::string_view thread_name, |
| std::string_view file_name, |
| int line_number, |
| int64_t ticks_since_epoch, |
| std::string_view message, |
| ByteSpan encode_buffer) { |
| // Encode message to the LogEntry protobuf. |
| LogEntry::MemoryEncoder encoder(encode_buffer); |
| |
| if (message.empty()) { |
| return Status::InvalidArgument(); |
| } |
| |
| // Defer status checks until the end. |
| Status status = encoder.WriteMessage(as_bytes(span(message))); |
| status = encoder.WriteLineLevel(PackLineLevel(line_number, level)); |
| if (flags != 0) { |
| status = encoder.WriteFlags(flags); |
| } |
| status = encoder.WriteTimestamp(ticks_since_epoch); |
| |
| // Module name and file name may or may not be present. |
| if (!module_name.empty()) { |
| status = encoder.WriteModule(as_bytes(span(module_name))); |
| } |
| if (!file_name.empty()) { |
| status = encoder.WriteFile(as_bytes(span(file_name))); |
| } |
| if (!thread_name.empty()) { |
| status = encoder.WriteThread(as_bytes(span(thread_name))); |
| } |
| PW_TRY(encoder.status()); |
| return ConstByteSpan(encoder); |
| } |
| |
| LogEntry::MemoryEncoder CreateEncoderAndEncodeTokenizedLog( |
| pw::log_tokenized::Metadata metadata, |
| ConstByteSpan tokenized_data, |
| int64_t ticks_since_epoch, |
| ByteSpan encode_buffer) { |
| // Encode message to the LogEntry protobuf. |
| LogEntry::MemoryEncoder encoder(encode_buffer); |
| |
| // Defer status checks until the end. |
| Status status = encoder.WriteMessage(tokenized_data); |
| status = encoder.WriteLineLevel( |
| PackLineLevel(metadata.line_number(), metadata.level())); |
| if (metadata.flags() != 0) { |
| status = encoder.WriteFlags(metadata.flags()); |
| } |
| status = encoder.WriteTimestamp(ticks_since_epoch); |
| if (metadata.module() != 0) { |
| const uint32_t little_endian_module = |
| bytes::ConvertOrderTo(endian::little, metadata.module()); |
| status = encoder.WriteModule(as_bytes(span(&little_endian_module, 1))); |
| } |
| return encoder; |
| } |
| |
| } // namespace pw::log |