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// Copyright (C) 2019 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 "common/cmd_utils.h"
#include "db/file_models.h"
#include "db/models.h"
#include <android-base/file.h>
#include <android-base/properties.h>
#include <algorithm>
#include <sstream>
#include <sys/stat.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
namespace iorap::db {
static constexpr const char* kRootPathProp = "iorapd.root.dir";
static const unsigned int kPerfettoMaxTraces =
::android::base::GetUintProperty("iorapd.perfetto.max_traces", /*default*/2u);
static uint64_t GetTimeNanoseconds() {
struct timespec now;
clock_gettime(CLOCK_REALTIME, &now);
uint64_t now_ns = (now.tv_sec * 1000000000LL + now.tv_nsec);
return now_ns;
}
static bool IsDir(const std::string& dirpath) {
struct stat st;
if (stat(dirpath.c_str(), &st) == 0) {
if (S_ISDIR(st.st_mode)) {
return true;
}
}
return false;
}
// Given some path /a/b/c create all of /a, /a/b, /a/b/c/ recursively.
static bool MkdirWithParents(const std::string& path) {
size_t prev_end = 0;
while (prev_end < path.size()) {
size_t next_end = path.find('/', prev_end + 1);
std::string dir_path = path.substr(0, next_end);
if (!IsDir(dir_path)) {
#if defined(_WIN32)
int ret = mkdir(dir_path.c_str());
#else
mode_t old_mask = umask(0);
// The user permission is 5 to allow system server to
// read the files. No other users could do that because
// the upper directory only allows system server and iorapd
// to access. Also selinux rules prevent other users to
// read files here.
int ret = mkdir(dir_path.c_str(), 0755);
umask(old_mask);
#endif
if (ret != 0) {
PLOG(ERROR) << "failed to create dir " << dir_path;
return false;
}
}
prev_end = next_end;
if (next_end == std::string::npos) {
break;
}
}
return true;
}
FileModelBase::FileModelBase(VersionedComponentName vcn)
: vcn_{std::move(vcn)} {
root_path_ = common::GetEnvOrProperty(kRootPathProp,
/*default*/"/data/misc/iorapd");
}
std::string FileModelBase::BaseDir() const {
std::stringstream ss;
ss << root_path_ << "/" << vcn_.GetPackage() << "/";
ss << vcn_.GetVersion();
ss << "/";
ss << vcn_.GetActivity() << "/";
ss << SubDir();
return ss.str();
}
std::string FileModelBase::FilePath() const {
std::stringstream ss;
ss << BaseDir();
ss << "/";
ss << BaseFile();
return ss.str();
}
bool FileModelBase::MkdirWithParents() {
LOG(VERBOSE) << "MkdirWithParents: " << BaseDir();
return ::iorap::db::MkdirWithParents(BaseDir());
}
PerfettoTraceFileModel::PerfettoTraceFileModel(VersionedComponentName vcn,
uint64_t timestamp)
: FileModelBase{std::move(vcn)}, timestamp_{timestamp} {
}
PerfettoTraceFileModel PerfettoTraceFileModel::CalculateNewestFilePath(VersionedComponentName vcn) {
uint64_t timestamp = GetTimeNanoseconds();
return PerfettoTraceFileModel{vcn, timestamp};
}
std::string PerfettoTraceFileModel::BaseFile() const {
std::stringstream ss;
ss << timestamp_ << ".perfetto_trace.pb";
return ss.str();
}
bool PerfettoTraceFileModel::NeedMorePerfettoTraces(DbHandle& db,
VersionedComponentName vcn) {
std::vector<RawTraceModel> raw_traces =
RawTraceModel::SelectByVersionedComponentName(db, vcn);
size_t raw_traces_size = raw_traces.size();
LOG(VERBOSE) << "The number of perfetto traces is "
<< raw_traces_size
<< " The cap is "
<< kPerfettoMaxTraces ;
return raw_traces_size < kPerfettoMaxTraces;
}
void PerfettoTraceFileModel::DeleteOlderFiles(DbHandle& db, VersionedComponentName vcn) {
std::vector<RawTraceModel> raw_traces =
RawTraceModel::SelectByVersionedComponentName(db, vcn);
if (WOULD_LOG(VERBOSE)) {
size_t raw_traces_size = raw_traces.size();
for (size_t i = 0; i < raw_traces_size; ++i) {
LOG(VERBOSE) << "DeleteOlderFiles - selected " << raw_traces[i];
}
LOG(VERBOSE) << "DeleteOlderFiles - queried total " << raw_traces_size << " records";
}
size_t items_to_delete = 0;
if (raw_traces.size() > kPerfettoMaxTraces) {
items_to_delete = raw_traces.size() - kPerfettoMaxTraces;
} else {
LOG(VERBOSE) << "DeleteOlderFiles - don't delete older raw traces, too few files: "
<< " wanted at least " << kPerfettoMaxTraces << ", but got " << raw_traces.size();
}
for (size_t i = 0; i < items_to_delete; ++i) {
RawTraceModel& raw_trace = raw_traces[i]; // sorted ascending -> items to delete are first.
std::string err_msg;
if (!::android::base::RemoveFileIfExists(raw_trace.file_path, /*out*/&err_msg)) {
LOG(ERROR) << "Failed to remove raw trace file: " << raw_trace.file_path
<< ", reason: " << err_msg;
} else {
raw_trace.Delete();
LOG(DEBUG) << "Deleted raw trace for " << vcn << " at " << raw_trace.file_path;
}
}
}
CompiledTraceFileModel::CompiledTraceFileModel(VersionedComponentName vcn)
: FileModelBase{std::move(vcn)} {
}
CompiledTraceFileModel CompiledTraceFileModel::CalculateNewestFilePath(VersionedComponentName vcn) {
return CompiledTraceFileModel{vcn};
}
std::string CompiledTraceFileModel::BaseFile() const {
return "compiled_trace.pb";
}
} // namespace iorap::db
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