blob: 679d19ed107141177c4649d070966fe8ce77fb0d [file] [log] [blame]
/*
* 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 "logging_splitters.h"
#include <string>
#include <vector>
#include <android-base/strings.h>
#include <gtest/gtest.h>
namespace android {
namespace base {
void TestNewlineSplitter(const std::string& input,
const std::vector<std::string>& expected_output) {
std::vector<std::string> output;
auto logger_function = [&](const char* msg, int length) {
if (length == -1) {
output.push_back(msg);
} else {
output.push_back(std::string(msg, length));
}
};
SplitByLines(input.c_str(), logger_function);
EXPECT_EQ(expected_output, output);
}
TEST(logging_splitters, NewlineSplitter_EmptyString) {
TestNewlineSplitter("", std::vector<std::string>{""});
}
TEST(logging_splitters, NewlineSplitter_BasicString) {
TestNewlineSplitter("normal string", std::vector<std::string>{"normal string"});
}
TEST(logging_splitters, NewlineSplitter_ormalBasicStringTrailingNewline) {
TestNewlineSplitter("normal string\n", std::vector<std::string>{"normal string", ""});
}
TEST(logging_splitters, NewlineSplitter_MultilineTrailing) {
TestNewlineSplitter("normal string\nsecond string\nthirdstring",
std::vector<std::string>{"normal string", "second string", "thirdstring"});
}
TEST(logging_splitters, NewlineSplitter_MultilineTrailingNewline) {
TestNewlineSplitter(
"normal string\nsecond string\nthirdstring\n",
std::vector<std::string>{"normal string", "second string", "thirdstring", ""});
}
TEST(logging_splitters, NewlineSplitter_MultilineEmbeddedNewlines) {
TestNewlineSplitter(
"normal string\n\n\nsecond string\n\nthirdstring\n",
std::vector<std::string>{"normal string", "", "", "second string", "", "thirdstring", ""});
}
void TestLogdChunkSplitter(const std::string& tag, const std::string& file,
const std::string& input,
const std::vector<std::string>& expected_output) {
std::vector<std::string> output;
auto logger_function = [&](LogId, LogSeverity, const char*, const char* msg) {
output.push_back(msg);
};
SplitByLogdChunks(MAIN, FATAL, tag.c_str(), file.empty() ? nullptr : file.c_str(), 1000,
input.c_str(), logger_function);
auto return_lengths = [&] {
std::string sizes;
sizes += "expected_output sizes:";
for (const auto& string : expected_output) {
sizes += " " + std::to_string(string.size());
}
sizes += "\noutput sizes:";
for (const auto& string : output) {
sizes += " " + std::to_string(string.size());
}
return sizes;
};
EXPECT_EQ(expected_output, output) << return_lengths();
}
TEST(logging_splitters, LogdChunkSplitter_EmptyString) {
TestLogdChunkSplitter("tag", "", "", std::vector<std::string>{""});
}
TEST(logging_splitters, LogdChunkSplitter_BasicString) {
TestLogdChunkSplitter("tag", "", "normal string", std::vector<std::string>{"normal string"});
}
TEST(logging_splitters, LogdChunkSplitter_NormalBasicStringTrailingNewline) {
TestLogdChunkSplitter("tag", "", "normal string\n", std::vector<std::string>{"normal string\n"});
}
TEST(logging_splitters, LogdChunkSplitter_MultilineTrailing) {
TestLogdChunkSplitter("tag", "", "normal string\nsecond string\nthirdstring",
std::vector<std::string>{"normal string\nsecond string\nthirdstring"});
}
TEST(logging_splitters, LogdChunkSplitter_MultilineTrailingNewline) {
TestLogdChunkSplitter("tag", "", "normal string\nsecond string\nthirdstring\n",
std::vector<std::string>{"normal string\nsecond string\nthirdstring\n"});
}
TEST(logging_splitters, LogdChunkSplitter_MultilineEmbeddedNewlines) {
TestLogdChunkSplitter(
"tag", "", "normal string\n\n\nsecond string\n\nthirdstring\n",
std::vector<std::string>{"normal string\n\n\nsecond string\n\nthirdstring\n"});
}
// This test should return the same string, the logd logger itself will truncate down to size.
// This has historically been the behavior both in libbase and liblog.
TEST(logging_splitters, LogdChunkSplitter_HugeLineNoNewline) {
auto long_string = std::string(LOGGER_ENTRY_MAX_PAYLOAD, 'x');
ASSERT_EQ(LOGGER_ENTRY_MAX_PAYLOAD, static_cast<int>(long_string.size()));
TestLogdChunkSplitter("tag", "", long_string, std::vector{long_string});
}
std::string ReduceToMaxSize(const std::string& tag, const std::string& string) {
return string.substr(0, LOGGER_ENTRY_MAX_PAYLOAD - tag.size() - 35);
}
TEST(logging_splitters, LogdChunkSplitter_MultipleHugeLineNoNewline) {
auto long_string_x = std::string(LOGGER_ENTRY_MAX_PAYLOAD, 'x');
auto long_string_y = std::string(LOGGER_ENTRY_MAX_PAYLOAD, 'y');
auto long_string_z = std::string(LOGGER_ENTRY_MAX_PAYLOAD, 'z');
auto long_strings = long_string_x + '\n' + long_string_y + '\n' + long_string_z;
std::string tag = "tag";
std::vector expected = {ReduceToMaxSize(tag, long_string_x), ReduceToMaxSize(tag, long_string_y),
long_string_z};
TestLogdChunkSplitter(tag, "", long_strings, expected);
}
// With a ~4k buffer, we should print 2 long strings per logger call.
TEST(logging_splitters, LogdChunkSplitter_Multiple2kLines) {
std::vector expected = {
std::string(2000, 'a') + '\n' + std::string(2000, 'b'),
std::string(2000, 'c') + '\n' + std::string(2000, 'd'),
std::string(2000, 'e') + '\n' + std::string(2000, 'f'),
};
auto long_strings = Join(expected, '\n');
TestLogdChunkSplitter("tag", "", long_strings, expected);
}
TEST(logging_splitters, LogdChunkSplitter_ExactSizedLines) {
const char* tag = "tag";
ptrdiff_t max_size = LOGGER_ENTRY_MAX_PAYLOAD - strlen(tag) - 35;
auto long_string_a = std::string(max_size, 'a');
auto long_string_b = std::string(max_size, 'b');
auto long_string_c = std::string(max_size, 'c');
auto long_strings = long_string_a + '\n' + long_string_b + '\n' + long_string_c;
TestLogdChunkSplitter(tag, "", long_strings,
std::vector{long_string_a, long_string_b, long_string_c});
}
TEST(logging_splitters, LogdChunkSplitter_UnderEqualOver) {
std::string tag = "tag";
ptrdiff_t max_size = LOGGER_ENTRY_MAX_PAYLOAD - tag.size() - 35;
auto first_string_size = 1000;
auto first_string = std::string(first_string_size, 'a');
auto second_string_size = max_size - first_string_size - 1;
auto second_string = std::string(second_string_size, 'b');
auto exact_string = std::string(max_size, 'c');
auto large_string = std::string(max_size + 50, 'd');
auto final_string = std::string("final string!\n\nfinal \n \n final \n");
std::vector expected = {first_string + '\n' + second_string, exact_string,
ReduceToMaxSize(tag, large_string), final_string};
std::vector input_strings = {first_string + '\n' + second_string, exact_string, large_string,
final_string};
auto long_strings = Join(input_strings, '\n');
TestLogdChunkSplitter(tag, "", long_strings, expected);
}
TEST(logging_splitters, LogdChunkSplitter_WithFile) {
std::string tag = "tag";
std::string file = "/path/to/myfile.cpp";
int line = 1000;
auto file_header = StringPrintf("%s:%d] ", file.c_str(), line);
ptrdiff_t max_size = LOGGER_ENTRY_MAX_PAYLOAD - tag.size() - 35;
auto first_string_size = 1000;
auto first_string = std::string(first_string_size, 'a');
auto second_string_size = max_size - first_string_size - 1 - 2 * file_header.size();
auto second_string = std::string(second_string_size, 'b');
auto exact_string = std::string(max_size - file_header.size(), 'c');
auto large_string = std::string(max_size + 50, 'd');
auto final_string = std::string("final string!");
std::vector expected = {
file_header + first_string + '\n' + file_header + second_string, file_header + exact_string,
file_header + ReduceToMaxSize(file_header + tag, large_string), file_header + final_string};
std::vector input_strings = {first_string + '\n' + second_string, exact_string, large_string,
final_string};
auto long_strings = Join(input_strings, '\n');
TestLogdChunkSplitter(tag, file, long_strings, expected);
}
// We set max_size based off of tag, so if it's too large, the buffer will be sized wrong.
// We could recover from this, but it's certainly an error for someone to attempt to use a tag this
// large, so we abort instead.
TEST(logging_splitters, LogdChunkSplitter_TooLongTag) {
auto long_tag = std::string(5000, 'x');
auto logger_function = [](LogId, LogSeverity, const char*, const char*) {};
ASSERT_DEATH(
SplitByLogdChunks(MAIN, ERROR, long_tag.c_str(), nullptr, 0, "message", logger_function), "");
}
// We do handle excessively large file names correctly however.
TEST(logging_splitters, LogdChunkSplitter_TooLongFile) {
auto long_file = std::string(5000, 'x');
std::string tag = "tag";
std::vector expected = {ReduceToMaxSize(tag, long_file), ReduceToMaxSize(tag, long_file)};
TestLogdChunkSplitter(tag, long_file, "can't see me\nor me", expected);
}
void TestStderrOutputGenerator(const char* tag, const char* file, int line, const char* message,
const std::string& expected) {
// All log messages will show "01-01 00:00:00"
struct tm now = {
.tm_sec = 0,
.tm_min = 0,
.tm_hour = 0,
.tm_mday = 1,
.tm_mon = 0,
.tm_year = 1970,
};
int pid = 1234; // All log messages will have 1234 for their PID.
uint64_t tid = 4321; // All log messages will have 4321 for their TID.
auto result = StderrOutputGenerator(now, pid, tid, ERROR, tag, file, line, message);
EXPECT_EQ(expected, result);
}
TEST(logging_splitters, StderrOutputGenerator_Basic) {
TestStderrOutputGenerator(nullptr, nullptr, 0, "simple message",
"nullptr E 01-01 00:00:00 1234 4321 simple message\n");
TestStderrOutputGenerator("tag", nullptr, 0, "simple message",
"tag E 01-01 00:00:00 1234 4321 simple message\n");
TestStderrOutputGenerator(
"tag", "/path/to/some/file", 0, "simple message",
"tag E 01-01 00:00:00 1234 4321 /path/to/some/file:0] simple message\n");
}
TEST(logging_splitters, StderrOutputGenerator_NewlineTagAndFile) {
TestStderrOutputGenerator("tag\n\n", nullptr, 0, "simple message",
"tag\n\n E 01-01 00:00:00 1234 4321 simple message\n");
TestStderrOutputGenerator(
"tag", "/path/to/some/file\n\n", 0, "simple message",
"tag E 01-01 00:00:00 1234 4321 /path/to/some/file\n\n:0] simple message\n");
}
TEST(logging_splitters, StderrOutputGenerator_TrailingNewLine) {
TestStderrOutputGenerator(
"tag", nullptr, 0, "simple message\n",
"tag E 01-01 00:00:00 1234 4321 simple message\ntag E 01-01 00:00:00 1234 4321 \n");
}
TEST(logging_splitters, StderrOutputGenerator_MultiLine) {
const char* expected_result =
"tag E 01-01 00:00:00 1234 4321 simple message\n"
"tag E 01-01 00:00:00 1234 4321 \n"
"tag E 01-01 00:00:00 1234 4321 \n"
"tag E 01-01 00:00:00 1234 4321 another message \n"
"tag E 01-01 00:00:00 1234 4321 \n"
"tag E 01-01 00:00:00 1234 4321 final message \n"
"tag E 01-01 00:00:00 1234 4321 \n"
"tag E 01-01 00:00:00 1234 4321 \n"
"tag E 01-01 00:00:00 1234 4321 \n";
TestStderrOutputGenerator("tag", nullptr, 0,
"simple message\n\n\nanother message \n\n final message \n\n\n",
expected_result);
}
TEST(logging_splitters, StderrOutputGenerator_MultiLineLong) {
auto long_string_a = std::string(4000, 'a');
auto long_string_b = std::string(4000, 'b');
auto message = long_string_a + '\n' + long_string_b;
auto expected_result = "tag E 01-01 00:00:00 1234 4321 " + long_string_a + '\n' +
"tag E 01-01 00:00:00 1234 4321 " + long_string_b + '\n';
TestStderrOutputGenerator("tag", nullptr, 0, message.c_str(), expected_result);
}
} // namespace base
} // namespace android