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/*
* Copyright (C) 2018 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 "src/traced/probes/filesystem/file_scanner.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <sys/stat.h>
#include <memory>
#include <string>
#include "perfetto/base/logging.h"
#include "src/base/test/test_task_runner.h"
namespace perfetto {
namespace {
using ::testing::Eq;
using ::testing::Contains;
using ::testing::UnorderedElementsAre;
class TestDelegate : public FileScanner::Delegate {
public:
TestDelegate(
std::function<bool(BlockDeviceID,
Inode,
const std::string&,
protos::pbzero::InodeFileMap_Entry_Type)> callback,
std::function<void()> done_callback)
: callback_(std::move(callback)),
done_callback_(std::move(done_callback)) {}
bool OnInodeFound(BlockDeviceID block_device_id,
Inode inode,
const std::string& path,
protos::pbzero::InodeFileMap_Entry_Type type) override {
return callback_(block_device_id, inode, path, type);
}
void OnInodeScanDone() { return done_callback_(); }
private:
std::function<bool(BlockDeviceID,
Inode,
const std::string&,
protos::pbzero::InodeFileMap_Entry_Type)>
callback_;
std::function<void()> done_callback_;
};
struct FileEntry {
FileEntry(BlockDeviceID block_device_id,
Inode inode,
std::string path,
protos::pbzero::InodeFileMap_Entry_Type type)
: block_device_id_(block_device_id),
inode_(inode),
path_(std::move(path)),
type_(type) {}
bool operator==(const FileEntry& other) const {
return block_device_id_ == other.block_device_id_ &&
inode_ == other.inode_ && path_ == other.path_ &&
type_ == other.type_;
}
BlockDeviceID block_device_id_;
Inode inode_;
std::string path_;
protos::pbzero::InodeFileMap_Entry_Type type_;
};
struct stat CheckStat(const std::string& path) {
struct stat buf;
PERFETTO_CHECK(lstat(path.c_str(), &buf) != -1);
return buf;
}
FileEntry StatFileEntry(const std::string& path,
protos::pbzero::InodeFileMap_Entry_Type type) {
struct stat buf = CheckStat(path);
return FileEntry(buf.st_dev, buf.st_ino, path, type);
}
TEST(FileScannerTest, TestSynchronousStop) {
uint64_t seen = 0;
bool done = false;
TestDelegate delegate(
[&seen](BlockDeviceID, Inode, const std::string&,
protos::pbzero::InodeFileMap_Entry_Type) {
++seen;
return false;
},
[&done] { done = true; });
FileScanner fs({"src/traced/probes/filesystem/testdata"}, &delegate);
fs.Scan();
EXPECT_EQ(seen, 1u);
EXPECT_TRUE(done);
}
TEST(FileScannerTest, TestAsynchronousStop) {
uint64_t seen = 0;
base::TestTaskRunner task_runner;
TestDelegate delegate(
[&seen](BlockDeviceID, Inode, const std::string&,
protos::pbzero::InodeFileMap_Entry_Type) {
++seen;
return false;
},
task_runner.CreateCheckpoint("done"));
FileScanner fs({"src/traced/probes/filesystem/testdata"}, &delegate, 1, 1);
fs.Scan(&task_runner);
task_runner.RunUntilCheckpoint("done");
EXPECT_EQ(seen, 1u);
}
TEST(FileScannerTest, TestSynchronousFindFiles) {
std::vector<FileEntry> file_entries;
TestDelegate delegate(
[&file_entries](BlockDeviceID block_device_id, Inode inode,
const std::string& path,
protos::pbzero::InodeFileMap_Entry_Type type) {
file_entries.emplace_back(block_device_id, inode, path, type);
return true;
},
[] {});
FileScanner fs({"src/traced/probes/filesystem/testdata"}, &delegate);
fs.Scan();
EXPECT_THAT(
file_entries,
UnorderedElementsAre(
Eq(StatFileEntry("src/traced/probes/filesystem/testdata/dir1/file1",
protos::pbzero::InodeFileMap_Entry_Type_FILE)),
Eq(StatFileEntry("src/traced/probes/filesystem/testdata/file2",
protos::pbzero::InodeFileMap_Entry_Type_FILE)),
Eq(StatFileEntry(
"src/traced/probes/filesystem/testdata/dir1",
protos::pbzero::InodeFileMap_Entry_Type_DIRECTORY))));
}
TEST(FileScannerTest, TestAsynchronousFindFiles) {
base::TestTaskRunner task_runner;
std::vector<FileEntry> file_entries;
TestDelegate delegate(
[&file_entries](BlockDeviceID block_device_id, Inode inode,
const std::string& path,
protos::pbzero::InodeFileMap_Entry_Type type) {
file_entries.emplace_back(block_device_id, inode, path, type);
return true;
},
task_runner.CreateCheckpoint("done"));
FileScanner fs({"src/traced/probes/filesystem/testdata"}, &delegate, 1, 1);
fs.Scan(&task_runner);
task_runner.RunUntilCheckpoint("done");
EXPECT_THAT(
file_entries,
UnorderedElementsAre(
Eq(StatFileEntry("src/traced/probes/filesystem/testdata/dir1/file1",
protos::pbzero::InodeFileMap_Entry_Type_FILE)),
Eq(StatFileEntry("src/traced/probes/filesystem/testdata/file2",
protos::pbzero::InodeFileMap_Entry_Type_FILE)),
Eq(StatFileEntry(
"src/traced/probes/filesystem/testdata/dir1",
protos::pbzero::InodeFileMap_Entry_Type_DIRECTORY))));
}
} // namespace
} // namespace perfetto
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