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// 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.
pwpb::LogEntry::MemoryEncoder encoder(encode_buffer);
if (message.empty()) {
return Status::InvalidArgument();
}
// Defer status checks until the end.
Status status = encoder.WriteMessage(as_bytes(span<const char>(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<const char>(module_name)));
}
if (!file_name.empty()) {
status = encoder.WriteFile(as_bytes(span<const char>(file_name)));
}
if (!thread_name.empty()) {
status = encoder.WriteThread(as_bytes(span<const char>(thread_name)));
}
PW_TRY(encoder.status());
return ConstByteSpan(encoder);
}
pwpb::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.
pwpb::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
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