86 lines
3.0 KiB
C++
86 lines
3.0 KiB
C++
//
|
|
// Copyright (C) 2020 The Android Open Source Project
|
|
//
|
|
// 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
|
|
//
|
|
// http://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 <android-base/logging.h>
|
|
#include <android-base/strings.h>
|
|
#include <gflags/gflags.h>
|
|
|
|
#include "common/libs/fs/shared_fd.h"
|
|
#include "common/libs/utils/tee_logging.h"
|
|
#include "host/libs/config/cuttlefish_config.h"
|
|
|
|
DEFINE_string(process_name, "", "The process to credit log messages to");
|
|
DEFINE_int32(log_fd_in, -1, "The file descriptor to read logs from.");
|
|
|
|
int main(int argc, char** argv) {
|
|
::android::base::InitLogging(argv, android::base::StderrLogger);
|
|
google::ParseCommandLineFlags(&argc, &argv, /* remove_flags */ true);
|
|
|
|
CHECK(FLAGS_log_fd_in >= 0) << "-log_fd_in is required";
|
|
|
|
auto config = cuttlefish::CuttlefishConfig::Get();
|
|
|
|
CHECK(config) << "Could not open cuttlefish config";
|
|
|
|
auto instance = config->ForDefaultInstance();
|
|
|
|
if (config->run_as_daemon()) {
|
|
android::base::SetLogger(
|
|
cuttlefish::LogToFiles({instance.launcher_log_path()}));
|
|
} else {
|
|
android::base::SetLogger(
|
|
cuttlefish::LogToStderrAndFiles({instance.launcher_log_path()}));
|
|
}
|
|
|
|
auto log_fd = cuttlefish::SharedFD::Dup(FLAGS_log_fd_in);
|
|
CHECK(log_fd->IsOpen()) << "Failed to dup log_fd_in: " << log_fd->StrError();
|
|
close(FLAGS_log_fd_in);
|
|
|
|
if (FLAGS_process_name.size() > 0) {
|
|
android::base::SetDefaultTag(FLAGS_process_name);
|
|
}
|
|
|
|
char buf[1 << 16];
|
|
ssize_t chars_read = 0;
|
|
|
|
LOG(DEBUG) << "Starting to read from process " << FLAGS_process_name;
|
|
|
|
while ((chars_read = log_fd->Read(buf, sizeof(buf))) > 0) {
|
|
auto trimmed = android::base::Trim(std::string(buf, chars_read));
|
|
// Newlines inside `trimmed` are handled by the android logging code.
|
|
// These checks attempt to determine the log severity coming from crosvm.
|
|
// There is no guarantee of success all the time since log line boundaries
|
|
// could be out sync with the reads, but that's ok.
|
|
if (android::base::StartsWith(trimmed, "[INFO")) {
|
|
LOG(DEBUG) << trimmed;
|
|
} else if (android::base::StartsWith(trimmed, "[ERROR")) {
|
|
LOG(ERROR) << trimmed;
|
|
} else if (android::base::StartsWith(trimmed, "[WARNING")) {
|
|
LOG(WARNING) << trimmed;
|
|
} else if (android::base::StartsWith(trimmed, "[VERBOSE")) {
|
|
LOG(VERBOSE) << trimmed;
|
|
} else {
|
|
LOG(DEBUG) << trimmed;
|
|
}
|
|
}
|
|
|
|
if (chars_read < 0) {
|
|
LOG(DEBUG) << "Failed to read from process " << FLAGS_process_name << ": "
|
|
<< log_fd->StrError();
|
|
}
|
|
|
|
LOG(DEBUG) << "Finished reading from process " << FLAGS_process_name;
|
|
}
|