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LogTest.cc
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/* Copyright (c) 2016-2020 Stanford University
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR(S) DISCLAIM ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL AUTHORS BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <fstream>
#include <iostream>
#include <iosfwd>
#include <cstdio>
#include <vector>
#include <sstream>
#include "gtest/gtest.h"
#include "TestUtil.h"
#include "RuntimeLogger.h"
#include "Packer.h"
#include "Log.h"
#include "GeneratedCode.h"
extern int __fmtId__Simple32log32message32with32032parameters__testHelper47client46cc__20__;
extern int __fmtId__This32is32a32string3237s__testHelper47client46cc__21__;
extern int __fmtId__I32have32an32integer3237d__testHelper47client46cc__28__; // testHelper/client.cc:28 "I have an integer %d"
extern int __fmtId__I32have32a32uint6495t3237lu__testHelper47client46cc__29__; // testHelper/client.cc:29 "I have a uint64_t %lu"
extern int __fmtId__I32have32a32double3237lf__testHelper47client46cc__30__; // testHelper/client.cc:30 "I have a double %lf"
extern int __fmtId__I32have32a32couple32of32things3237d443237f443237u443237s__testHelper47client46cc__31__; // testHelper/client.cc:31 "I have a couple of things %d, %f, %u, %s"
namespace {
using namespace PerfUtils;
using namespace NanoLogInternal;
using namespace Log;
void stopCompressionThread() {
{
std::lock_guard<std::mutex> lock(
RuntimeLogger::nanoLogSingleton.condMutex);
RuntimeLogger::nanoLogSingleton.compressionThreadShouldExit = true;
RuntimeLogger::nanoLogSingleton.workAdded.notify_all();
}
if (RuntimeLogger::nanoLogSingleton.compressionThread.joinable()) {
RuntimeLogger::nanoLogSingleton.compressionThread.join();
}
}
void restartCompressionThread() {
stopCompressionThread();
RuntimeLogger::nanoLogSingleton.compressionThreadShouldExit = false;
RuntimeLogger::nanoLogSingleton.compressionThread =
std::thread(&RuntimeLogger::compressionThreadMain,
&RuntimeLogger::nanoLogSingleton);
}
// The fixture for testing class Foo.
class LogTest : public ::testing::Test {
protected:
// Note, if the tests ever fail to compile due to these symbols not being
// found, it's most likely that someone updated the testHelper/main.cc file.
// In this case, check testHelper/GeneratedCode.cc for updated values and
// change the declarations above and uses below to match.
int noParamsId = __fmtId__Simple32log32message32with32032parameters__testHelper47client46cc__20__;
int stringParamId = __fmtId__This32is32a32string3237s__testHelper47client46cc__21__;
int integerParamId = __fmtId__I32have32an32integer3237d__testHelper47client46cc__28__;
int uint64_tParamId = __fmtId__I32have32a32uint6495t3237lu__testHelper47client46cc__29__;
int doubleParamId = __fmtId__I32have32a32double3237lf__testHelper47client46cc__30__;
int mixParamId = __fmtId__I32have32a32couple32of32things3237d443237f443237u443237s__testHelper47client46cc__31__;
LogTest()
{
char dictionary[4096];
dictionaryBytes = GeneratedFunctions::writeDictionary(dictionary,
dictionary + sizeof(dictionary));
assert(dictionaryBytes > 0);
}
virtual ~LogTest() {
}
// If the constructor and destructor are not enough for setting up
// and cleaning up each test, you can define the following methods:
virtual void SetUp() {
// Code here will be called immediately after the constructor (right
// before each test).
}
virtual void TearDown() {
// Code here will be called immediately after each test (right
// before the destructor).
}
// Objects declared here can be used by all tests in the test case for Foo.
uint32_t dictionaryBytes;
};
TEST_F(LogTest, maxSizeOfHeader) {
char buffer[100];
Encoder encoder(buffer, 100, true);
size_t encodeStart = encoder.getEncodedBytes();
encoder.encodeBufferExtentStart(1<<31, false);
size_t actualLength = encoder.getEncodedBytes() - encodeStart;
size_t claimedLength = BufferExtent::maxSizeOfHeader();
EXPECT_EQ(actualLength, claimedLength);
}
TEST_F(LogTest, peekEntryType) {
const char *testFile = "/tmp/testFile";
char buffer[100];
UnknownHeader *header = reinterpret_cast<UnknownHeader*>(buffer);
header->entryType = EntryType::LOG_MSGS_OR_DIC;
(++header)->entryType = EntryType::BUFFER_EXTENT;
(++header)->entryType = EntryType::CHECKPOINT;
(++header)->entryType = EntryType::INVALID;
EXPECT_EQ(EntryType::LOG_MSGS_OR_DIC, peekEntryType(buffer));
EXPECT_EQ(EntryType::BUFFER_EXTENT, peekEntryType(buffer + 1));
EXPECT_EQ(EntryType::CHECKPOINT, peekEntryType(buffer + 2));
EXPECT_EQ(EntryType::INVALID, peekEntryType(buffer + 3));
// Write the buffer to a file and read it back
std::ofstream oFile;
oFile.open(testFile);
oFile.write(buffer, 4);
oFile.close();
FILE *in = fopen(testFile, "r");
ASSERT_NE(nullptr, in);
EXPECT_EQ(EntryType::LOG_MSGS_OR_DIC, peekEntryType(in));
fgetc(in);
EXPECT_EQ(EntryType::BUFFER_EXTENT, peekEntryType(in));
fgetc(in);
EXPECT_EQ(EntryType::CHECKPOINT, peekEntryType(in));
fgetc(in);
EXPECT_EQ(EntryType::INVALID, peekEntryType(in));
fgetc(in);
// Should be end of file
fgetc(in);
EXPECT_TRUE(feof(in));
EXPECT_EQ(EntryType::INVALID, peekEntryType(in));
std::remove(testFile);
}
TEST_F(LogTest, compressMetadata)
{
char buffer[100];
char *pos = buffer;
Log::UncompressedEntry re;
re.fmtId = 100;
re.timestamp = 1000000000;
size_t cmpSize = compressLogHeader(&re, &pos, 0);
EXPECT_EQ(6U, cmpSize);
EXPECT_EQ(6U, pos - buffer);
}
TEST_F(LogTest, compressMetadata_negativeDeltas)
{
char buffer[100];
char *pos = buffer;
Log::UncompressedEntry re;
re.fmtId = 100;
re.timestamp = 100;
size_t cmpSize = compressLogHeader(&re, &pos, 1000);
EXPECT_EQ(4U, cmpSize);
EXPECT_EQ(4U, pos - buffer);
re.fmtId = 5000000;
re.timestamp = 90;
cmpSize = compressLogHeader(&re, &pos, 100);
EXPECT_EQ(5U, cmpSize);
EXPECT_EQ(9U, pos - buffer);
}
TEST_F(LogTest, compressMetadata_end2end)
{
char backing_buffer[100];
char *buffer = backing_buffer;
size_t cmpSize;
UncompressedEntry re;
uint32_t dLogId;
uint64_t dTimestamp;
re.fmtId = 1000;
re.timestamp = 10000000000000L;
cmpSize = compressLogHeader(&re, &buffer, 0);
EXPECT_EQ(9U, cmpSize);
EXPECT_EQ(9U, buffer - backing_buffer);
re.fmtId = 10000;
re.timestamp = 10000;
cmpSize = compressLogHeader(&re, &buffer, 10000000000000L);
EXPECT_EQ(9U, cmpSize);
EXPECT_EQ(18U, buffer - backing_buffer);
re.fmtId = 1;
re.timestamp = 100000;
cmpSize = compressLogHeader(&re, &buffer, 10000);
EXPECT_EQ(5U, cmpSize);
EXPECT_EQ(23U, buffer - backing_buffer);
re.fmtId = 1;
re.timestamp = 100001;
cmpSize = compressLogHeader(&re, &buffer, 100000);
EXPECT_EQ(3U, cmpSize);
EXPECT_EQ(26U, buffer - backing_buffer);
cmpSize = compressLogHeader(&re, &buffer, 100001);
EXPECT_EQ(3U, cmpSize);
EXPECT_EQ(29U, buffer - backing_buffer);
const char *readPtr = backing_buffer;
EXPECT_EQ(EntryType::LOG_MSGS_OR_DIC, peekEntryType(readPtr));
ASSERT_TRUE(decompressLogHeader(&readPtr, 0U, dLogId, dTimestamp));
EXPECT_EQ(1000, dLogId);
EXPECT_EQ(10000000000000L, dTimestamp);
EXPECT_EQ(EntryType::LOG_MSGS_OR_DIC, peekEntryType(readPtr));
ASSERT_TRUE(decompressLogHeader(&readPtr, 10000000000000L, dLogId,
dTimestamp));
EXPECT_EQ(10000, dLogId);
EXPECT_EQ(10000, dTimestamp);
EXPECT_EQ(EntryType::LOG_MSGS_OR_DIC, peekEntryType(readPtr));
ASSERT_TRUE(decompressLogHeader(&readPtr, 10000, dLogId, dTimestamp));
EXPECT_EQ(1, dLogId);
EXPECT_EQ(100000, dTimestamp);
EXPECT_EQ(EntryType::LOG_MSGS_OR_DIC, peekEntryType(readPtr));
ASSERT_TRUE(decompressLogHeader(&readPtr, 100000, dLogId, dTimestamp));
EXPECT_EQ(1, dLogId);
EXPECT_EQ(100001, dTimestamp);
EXPECT_EQ(EntryType::LOG_MSGS_OR_DIC, peekEntryType(readPtr));
ASSERT_TRUE(decompressLogHeader(&readPtr, 100001, dLogId, dTimestamp));
EXPECT_EQ(1, dLogId);
EXPECT_EQ(100001, dTimestamp);
EXPECT_EQ(EntryType::INVALID, peekEntryType(readPtr));
EXPECT_EQ(29U, readPtr - backing_buffer);
}
TEST_F(LogTest, insertCheckpoint) {
char backing_buffer[1000];
char *writePos = backing_buffer;
char *endOfBuffer = backing_buffer + 1000;
Checkpoint *ck = reinterpret_cast<Checkpoint*>(backing_buffer);
// out of space
EXPECT_FALSE(insertCheckpoint(&writePos, backing_buffer, false));
EXPECT_EQ(writePos, backing_buffer);
EXPECT_FALSE(insertCheckpoint(&writePos, backing_buffer, true));
EXPECT_EQ(writePos, backing_buffer);
// Not out of space
ASSERT_TRUE(insertCheckpoint(&writePos, endOfBuffer, false));
EXPECT_EQ(sizeof(Checkpoint), writePos - backing_buffer);
EXPECT_EQ(0U, ck->newMetadataBytes);
EXPECT_EQ(0U, ck->totalMetadataEntries);
writePos = backing_buffer;
ASSERT_TRUE(insertCheckpoint(&writePos, endOfBuffer, true));
ck = reinterpret_cast<Checkpoint*>(backing_buffer);
EXPECT_EQ(sizeof(Checkpoint) + ck->newMetadataBytes,
writePos - backing_buffer);
EXPECT_EQ(EntryType::CHECKPOINT, peekEntryType(backing_buffer));
// Out of space at the very end
writePos = endOfBuffer - sizeof(Checkpoint) - 1;
EXPECT_FALSE(insertCheckpoint(&writePos, endOfBuffer, true));
writePos = endOfBuffer - sizeof(Checkpoint) - 1;
EXPECT_TRUE(insertCheckpoint(&writePos, endOfBuffer, false));
}
TEST_F(LogTest, insertCheckpoint_end2end) {
Checkpoint cp1, cp2, cp3, cp4;
char backing_buffer[2048];
char *writePos = backing_buffer;
char *endOfBuffer = backing_buffer + 2048;
const char *testFile = "/tmp/testFile";
// Write the buffer to a file and read it back
std::ofstream oFile;
oFile.open(testFile);
oFile.write(backing_buffer, 0);
oFile.close();
FILE *in = fopen(testFile, "r");
ASSERT_NE(nullptr, in);
ASSERT_FALSE(readCheckpoint(cp1, in));
ASSERT_TRUE(insertCheckpoint(&writePos, endOfBuffer, false));
ASSERT_TRUE(insertCheckpoint(&writePos, endOfBuffer, true));
ASSERT_TRUE(insertCheckpoint(&writePos, endOfBuffer, false));
// Write the buffer to a file and read it back
fclose(in);
oFile.open(testFile);
oFile.write(backing_buffer, writePos - backing_buffer);
oFile.close();
in = fopen(testFile, "r");
ASSERT_NE(nullptr, in);
ASSERT_TRUE(readCheckpoint(cp1, in));
// The metadata bytes are tested by the preprocessor unit tests and
// integration tests.
ASSERT_TRUE(readCheckpoint(cp2, in));
ASSERT_EQ(0U, fseeko(in, cp2.newMetadataBytes, SEEK_CUR));
ASSERT_TRUE(readCheckpoint(cp3, in));
ASSERT_FALSE(readCheckpoint(cp4, in));
}
TEST_F(LogTest, encoder_constructor) {
char buffer[1024];
// Check that a checkpoint was inserted
Encoder encoder(buffer, sizeof(buffer), false);
EXPECT_LE(sizeof(Checkpoint), encoder.writePos - encoder.backing_buffer);
EXPECT_EQ(buffer, encoder.backing_buffer);
EXPECT_EQ(sizeof(buffer), encoder.endOfBuffer - encoder.backing_buffer);
EXPECT_EQ(EntryType::CHECKPOINT, peekEntryType(buffer));
// Check that a checkpoint was not inserted
memset(buffer, 0, sizeof(buffer));
Encoder e(buffer, sizeof(buffer), true);
EXPECT_EQ(0U, e.writePos - e.backing_buffer);
EXPECT_EQ(buffer, e.backing_buffer);
EXPECT_EQ(sizeof(buffer), e.endOfBuffer - e.backing_buffer);
}
TEST_F(LogTest, encodeNewDictionaryEntries) {
char buffer[10*1024];
uint32_t currentPos = 0;
std::vector<StaticLogInfo> meta;
NanoLogInternal::ParamType paramTypes[10];
meta.emplace_back(nullptr, "File", 123, 0, "Hello World", 0, 0, paramTypes);
meta.emplace_back(nullptr, "FileA", 99, 2, "Hello World %s", 0, 0, paramTypes);
meta.emplace_back(nullptr, "FileC", 125, 3, "Hello World %%d", 0, 0, paramTypes);
// Not enough space, even for a dictionary fragment
Encoder noSpaceEncoder(buffer, 1, true);
EXPECT_EQ(0, noSpaceEncoder.encodeNewDictionaryEntries(currentPos, meta));
EXPECT_EQ(0, currentPos);
// Normal encoding
Encoder encoder(buffer, sizeof(buffer), true);
uint32_t expectedSize = sizeof(DictionaryFragment)
+ 3*sizeof(CompressedLogInfo)
+ strlen(meta[0].filename) + 1
+ strlen(meta[1].filename) + 1
+ strlen(meta[2].filename) + 1
+ strlen(meta[0].formatString) + 1
+ strlen(meta[1].formatString) + 1
+ strlen(meta[2].formatString) + 1;
EXPECT_EQ(expectedSize,
encoder.encodeNewDictionaryEntries(currentPos, meta));
EXPECT_EQ(3, currentPos);
// Read Header
char *readPos = buffer;
DictionaryFragment *df = reinterpret_cast<DictionaryFragment*>(readPos);
readPos += sizeof(DictionaryFragment);
EXPECT_EQ(EntryType::LOG_MSGS_OR_DIC, df->entryType);
EXPECT_EQ(expectedSize, df->newMetadataBytes);
EXPECT_EQ(3, df->totalMetadataEntries);
// Read back the entries
for (size_t i = 0; i < meta.size(); ++i) {
CompressedLogInfo *cli = reinterpret_cast<CompressedLogInfo *>(readPos);
readPos += sizeof(CompressedLogInfo);
EXPECT_EQ(meta[i].lineNum, cli->linenum);
EXPECT_EQ(meta[i].severity, cli->severity);
EXPECT_EQ(strlen(meta[i].filename) + 1, cli->filenameLength);
EXPECT_EQ(strlen(meta[i].formatString) + 1, cli->formatStringLength);
EXPECT_STREQ(meta[i].filename, readPos);
readPos += strlen(meta[i].filename) + 1;
EXPECT_STREQ(meta[i].formatString, readPos);
readPos += strlen(meta[i].formatString) + 1;
}
EXPECT_EQ(buffer + expectedSize, readPos);
// Now let's add another entry to make sure it makes it in okay
meta.emplace_back(nullptr, "BLALKSD", 125, 3, "H %%d", 0, 0, paramTypes);
expectedSize = sizeof(DictionaryFragment)
+ sizeof(CompressedLogInfo)
+ strlen(meta[3].filename) + 1
+ strlen(meta[3].formatString) + 1;
EXPECT_EQ(expectedSize, encoder.encodeNewDictionaryEntries(currentPos,
meta));
df = reinterpret_cast<DictionaryFragment*>(readPos);
readPos += sizeof(DictionaryFragment);
EXPECT_EQ(EntryType::LOG_MSGS_OR_DIC, df->entryType);
EXPECT_EQ(expectedSize, df->newMetadataBytes);
EXPECT_EQ(4, df->totalMetadataEntries);
for (size_t i = 3; i < meta.size(); ++i) {
CompressedLogInfo *cli = reinterpret_cast<CompressedLogInfo *>(readPos);
readPos += sizeof(CompressedLogInfo);
EXPECT_EQ(meta[i].lineNum, cli->linenum);
EXPECT_EQ(meta[i].severity, cli->severity);
EXPECT_EQ(strlen(meta[i].filename) + 1, cli->filenameLength);
EXPECT_EQ(strlen(meta[i].formatString) + 1, cli->formatStringLength);
EXPECT_STREQ(meta[i].filename, readPos);
readPos += strlen(meta[i].filename) + 1;
EXPECT_STREQ(meta[i].formatString, readPos);
readPos += strlen(meta[i].formatString) + 1;
}
// One last entry, but this time we'll run out of space after encoding
// the dictionary fragment header
encoder.endOfBuffer = encoder.writePos + sizeof(DictionaryFragment) + 1;
meta.emplace_back(nullptr, "BLALKSD", 125, 3, "H %%d", 0, 0, paramTypes);
EXPECT_EQ(sizeof(DictionaryFragment),
encoder.encodeNewDictionaryEntries(currentPos, meta));
df = reinterpret_cast<DictionaryFragment*>(readPos);
readPos += sizeof(DictionaryFragment);
EXPECT_EQ(EntryType::LOG_MSGS_OR_DIC, df->entryType);
EXPECT_EQ(sizeof(DictionaryFragment), df->newMetadataBytes);
EXPECT_EQ(4, df->totalMetadataEntries);
EXPECT_EQ(4, currentPos);
}
TEST_F(LogTest, encodeLogMsgs) {
char inputBuffer[100], outputBuffer1[1000];
// We prefill the buffer with log messages. Note in test helper,
// We have one valid log id with 0 arguments.
UncompressedEntry* ue = reinterpret_cast<UncompressedEntry*>(inputBuffer);
ue->timestamp = 100;
ue->fmtId = noParamsId;
ue->entrySize = sizeof(UncompressedEntry);
++ue;
ue->timestamp = 101;
ue->fmtId = stringParamId;
ue->entrySize = 2*sizeof(UncompressedEntry);
ASSERT_LE(2, GeneratedFunctions::numLogIds);
uint64_t compressedLogs = 1;
Encoder e(outputBuffer1, 1000);
long bytesRead = e.encodeLogMsgs(inputBuffer,
3*sizeof(UncompressedEntry),
5,
true,
&compressedLogs);
EXPECT_EQ(1 + 2, compressedLogs);
EXPECT_EQ(3*sizeof(UncompressedEntry), bytesRead);
EXPECT_EQ(5U, e.lastBufferIdEncoded);
/**
* Now let's check the log, it should roughly follow the format of
* - Checkpoint
* - BufferExtent
* - Log message 1
* - log message 2
* -> sizeof(UncompressedEntry) of a "string"
*/
const char *readPos = outputBuffer1;
EXPECT_EQ(EntryType::CHECKPOINT, peekEntryType(readPos));
const Checkpoint *ck = reinterpret_cast<const Checkpoint*>(readPos);
readPos += sizeof(Checkpoint);
readPos += ck->newMetadataBytes;
EXPECT_EQ(EntryType::BUFFER_EXTENT, peekEntryType(readPos));
const BufferExtent *be = reinterpret_cast<const BufferExtent*>(readPos);
readPos += sizeof(BufferExtent);
// Checking the buffer extents
EXPECT_EQ(6U + sizeof(BufferExtent)+sizeof(UncompressedEntry), be->length);
ASSERT_TRUE(be->isShort);
EXPECT_EQ(5, be->threadIdOrPackNibble);
EXPECT_TRUE(be->wrapAround);
// Checking the first log meta
uint64_t ts;
uint32_t fmtId;
EXPECT_EQ(EntryType::LOG_MSGS_OR_DIC, peekEntryType(readPos));
decompressLogHeader(&readPos, 0, fmtId, ts);
EXPECT_EQ(EntryType::LOG_MSGS_OR_DIC, peekEntryType(readPos));
decompressLogHeader(&readPos, 0, fmtId, ts);
// Now we break abstractions a little bit and read the "string" part of it
readPos += sizeof(UncompressedEntry);
EXPECT_EQ(readPos, e.writePos);
// Let's try it again, with the same and different buffers to see if the
// encoder will encode new BuferExtents
bytesRead = e.encodeLogMsgs(inputBuffer,
3*sizeof(UncompressedEntry),
6,
false,
&compressedLogs);
EXPECT_EQ(1 + 2 + 2, compressedLogs);
EXPECT_EQ(3*sizeof(UncompressedEntry), bytesRead);
EXPECT_EQ(6U, e.lastBufferIdEncoded);
EXPECT_EQ(EntryType::BUFFER_EXTENT, peekEntryType(readPos));
be = reinterpret_cast<const BufferExtent*>(readPos);
EXPECT_TRUE(be->isShort);
EXPECT_EQ(6U, be->threadIdOrPackNibble);
readPos += sizeof(BufferExtent);
EXPECT_EQ(EntryType::LOG_MSGS_OR_DIC, peekEntryType(readPos));
// Now one last time without without changing the buffers
readPos = e.writePos;
bytesRead = e.encodeLogMsgs(inputBuffer,
3*sizeof(UncompressedEntry),
6,
false,
&compressedLogs);
EXPECT_EQ(1 + 2 + 2 + 2, compressedLogs);
EXPECT_EQ(3*sizeof(UncompressedEntry), bytesRead);
EXPECT_EQ(6U, e.lastBufferIdEncoded);
EXPECT_EQ(EntryType::BUFFER_EXTENT, peekEntryType(readPos));
// One last time, with the same buffer but a newPass
readPos = e.writePos;
bytesRead = e.encodeLogMsgs(inputBuffer,
3*sizeof(UncompressedEntry),
6,
true,
&compressedLogs);
EXPECT_EQ(1 + 2 + 2 + 2 + 2, compressedLogs);
EXPECT_EQ(3*sizeof(UncompressedEntry), bytesRead);
EXPECT_EQ(6U, e.lastBufferIdEncoded);
EXPECT_EQ(EntryType::BUFFER_EXTENT, peekEntryType(readPos));
}
TEST_F(LogTest, encodeLogMsgs_notEnoughOutputSpace) {
char inputBuffer[100], outputBuffer1[4096];
// We prefill the buffer with log messages. Note in test helper,
// We have one valid log id with 0 arguments.
UncompressedEntry* ue = reinterpret_cast<UncompressedEntry*>(inputBuffer);
ue->timestamp = 100;
ue->fmtId = noParamsId;
ue->entrySize = sizeof(UncompressedEntry);
++ue;
ue->timestamp = 100;
ue->fmtId = stringParamId;
ue->entrySize = 2*sizeof(UncompressedEntry);
ASSERT_LE(2, GeneratedFunctions::numLogIds);
uint64_t compressedLogs = 1;
Encoder e(outputBuffer1, 100 + dictionaryBytes, false, true);
long bytesRead = e.encodeLogMsgs(inputBuffer,
3*sizeof(UncompressedEntry),
5,
true,
&compressedLogs);
EXPECT_EQ(1 + 1, compressedLogs);
EXPECT_EQ(sizeof(UncompressedEntry), bytesRead);
EXPECT_EQ(5U, e.lastBufferIdEncoded);
// Rough check of what's in the buffer
EXPECT_EQ(e.writePos - e.backing_buffer, sizeof(Checkpoint)
+ dictionaryBytes
+ sizeof(BufferExtent)
+ sizeof(CompressedEntry) + 2);
const char *readPos = e.backing_buffer + sizeof(Checkpoint)
+ dictionaryBytes;
const BufferExtent *be = reinterpret_cast<const BufferExtent*>(readPos);
EXPECT_EQ(sizeof(BufferExtent) + 3U, be->length);
// Now let's try one more out of space whereby there's not enough space
// to encode the buffer extent.
compressedLogs = 1;
uint32_t bufferSize = sizeof(Checkpoint) + dictionaryBytes
+ sizeof(BufferExtent) - 1;
Encoder e2(outputBuffer1, bufferSize, false, true);
bytesRead = e2.encodeLogMsgs(inputBuffer,
3*sizeof(UncompressedEntry),
100,
true,
&compressedLogs);
EXPECT_EQ(0U, bytesRead);
EXPECT_EQ(1U, compressedLogs);
EXPECT_NE(100U, e2.lastBufferIdEncoded);
EXPECT_EQ(sizeof(Checkpoint) + dictionaryBytes, e2.getEncodedBytes());
// One last attempt whereby we have enough space to encode the buffer
// extent but nothing else.
ue = reinterpret_cast<UncompressedEntry*>(inputBuffer);
ue->timestamp = 100;
ue->fmtId = stringParamId;
ue->entrySize = 2*sizeof(UncompressedEntry);
compressedLogs = 1;
bufferSize = sizeof(Checkpoint) + dictionaryBytes + sizeof(BufferExtent)
+ sizeof(uint32_t);
Encoder e3(outputBuffer1, bufferSize, false, true);
bytesRead = e3.encodeLogMsgs(inputBuffer,
3*sizeof(UncompressedEntry),
1,
true,
&compressedLogs);
EXPECT_EQ(0U, bytesRead);
EXPECT_EQ(1U, compressedLogs);
EXPECT_EQ(1U, e3.lastBufferIdEncoded);
EXPECT_EQ(sizeof(Checkpoint) + dictionaryBytes + sizeof(BufferExtent),
e3.getEncodedBytes());
be = reinterpret_cast<const BufferExtent*>(e3.backing_buffer
+ sizeof(Checkpoint)
+ dictionaryBytes);
EXPECT_EQ(sizeof(BufferExtent), be->length);
}
TEST_F(LogTest, encodeLogMsgs_notEnoughInputSpace) {
char inputBuffer[100], outputBuffer1[1000];
// We prefill the buffer with log messages. Note in test helper,
// We have one valid log id with 0 arguments.
UncompressedEntry* ue = reinterpret_cast<UncompressedEntry*>(inputBuffer);
ue->timestamp = 100;
ue->fmtId = noParamsId;
ue->entrySize = sizeof(UncompressedEntry);
++ue;
ue->timestamp = 100;
ue->fmtId = stringParamId;
ue->entrySize = 2*sizeof(UncompressedEntry);
ASSERT_LE(2, GeneratedFunctions::numLogIds);
uint64_t compressedLogs = 1;
Encoder e(outputBuffer1, 1000);
long bytesRead = e.encodeLogMsgs(inputBuffer,
2*sizeof(UncompressedEntry),
5,
true,
&compressedLogs);
EXPECT_EQ(1 + 1, compressedLogs);
EXPECT_EQ(sizeof(UncompressedEntry), bytesRead);
EXPECT_EQ(5U, e.lastBufferIdEncoded);
// Once again with less than an uncompressed entry
bytesRead = e.encodeLogMsgs(inputBuffer,
sizeof(UncompressedEntry) - 1,
5,
true,
&compressedLogs);
EXPECT_EQ(1 + 1, compressedLogs);
EXPECT_EQ(0U, bytesRead);
EXPECT_EQ(5U, e.lastBufferIdEncoded);
}
TEST_F(LogTest, encodeLogMsgs_logTooBig) {
char inputBuffer[100], outputBuffer1[1000];
UncompressedEntry* ue = reinterpret_cast<UncompressedEntry*>(inputBuffer);
ue->timestamp = 100;
ue->fmtId = stringParamId;
ue->entrySize = sizeof(UncompressedEntry)
+ NanoLogConfig::STAGING_BUFFER_SIZE;
Encoder e(outputBuffer1, 1000);
testing::internal::CaptureStderr();
uint64_t compressedLogs = 0;
long bytesRead = e.encodeLogMsgs(inputBuffer,
2*sizeof(UncompressedEntry),
5,
true,
&compressedLogs);
EXPECT_EQ(0, compressedLogs);
EXPECT_STREQ("ERROR: Attempting to log a message that is 1048592 bytes "
"while the maximum allowable size is 524288.\r\nThis occurs "
"for the log message testHelper/client.cc:21 "
"'This is a string %s'\r\n",
testing::internal::GetCapturedStderr().c_str());
}
TEST_F(LogTest, encodeBufferExtentStart) {
char buffer[1000];
Encoder encoder(buffer, 1000, true);
// Assert that nothing has been written
ASSERT_EQ(encoder.backing_buffer, encoder.writePos);
ASSERT_EQ(0U, encoder.getEncodedBytes());
ASSERT_TRUE(encoder.encodeBufferExtentStart(15, false));
const BufferExtent *be = reinterpret_cast<const BufferExtent*>(buffer);
EXPECT_EQ(EntryType::BUFFER_EXTENT, be->entryType);
EXPECT_TRUE(be->isShort);
EXPECT_EQ(sizeof(BufferExtent), be->length);
EXPECT_EQ(15U, be->threadIdOrPackNibble);
EXPECT_FALSE(be->wrapAround);
EXPECT_EQ(&(be->length), encoder.currentExtentSize);
EXPECT_EQ(15, encoder.lastBufferIdEncoded);
// Let's try another one whereby id is larger than what can fit internally
char *secondWritePos = encoder.writePos;
ASSERT_TRUE(encoder.encodeBufferExtentStart(111111111, true));
++be;
EXPECT_EQ(EntryType::BUFFER_EXTENT, be->entryType);
EXPECT_FALSE(be->isShort);
EXPECT_TRUE(be->wrapAround);
EXPECT_EQ(&(be->length), encoder.currentExtentSize);
EXPECT_EQ(111111111, encoder.lastBufferIdEncoded);
const char *pos = buffer + 2*sizeof(BufferExtent);
uint32_t encodedId = BufferUtils::unpack<uint32_t>(&pos,
uint8_t(be->threadIdOrPackNibble));
EXPECT_EQ(111111111, encodedId);
EXPECT_EQ(pos, encoder.writePos);
EXPECT_EQ(encoder.writePos - secondWritePos, be->length);
}
TEST_F(LogTest, encodeBufferExtentStart_outtaSpace) {
char buffer[100];
Encoder encoder(buffer, 1, true);
EXPECT_FALSE(encoder.encodeBufferExtentStart(1234, true));
EXPECT_EQ(0U, encoder.getEncodedBytes());
EXPECT_EQ(nullptr, encoder.currentExtentSize);
}
TEST_F(LogTest, swapBuffer) {
char buffer1[1000], buffer2[100];
Encoder encoder(buffer1, 1000, false, true);
char *outBuffer;
size_t outLength;
size_t outSize;
encoder.swapBuffer(buffer2, 100, &outBuffer, &outLength, &outSize);
EXPECT_EQ(buffer1, outBuffer);
EXPECT_EQ(sizeof(Checkpoint) + dictionaryBytes, outLength);
EXPECT_EQ(1000, outSize);
EXPECT_EQ(buffer2, encoder.backing_buffer);
EXPECT_EQ(buffer2, encoder.writePos);
EXPECT_EQ(buffer2 + 100, encoder.endOfBuffer);
EXPECT_EQ(uint32_t(-1), encoder.lastBufferIdEncoded);
EXPECT_EQ(nullptr, encoder.currentExtentSize);
}
TEST_F(LogTest, Decoder_open) {
char buffer[1000];
const char *testFile = "/tmp/testFile";
Decoder dc;
// Open an invalid file
testing::internal::CaptureStderr();
EXPECT_FALSE(dc.open("/dev/null"));
EXPECT_TRUE(dc.filename.empty());
EXPECT_EQ(0U, dc.inputFd);
EXPECT_STREQ("Error: Could not read initial checkpoint, "
"the compressed log may be corrupted.\r\n",
testing::internal::GetCapturedStderr().c_str());
// Write back an empty file and try to open it.
std::ofstream oFile;
oFile.open(testFile);
oFile.write(buffer, 0);
oFile.close();
testing::internal::CaptureStderr();
EXPECT_FALSE(dc.open(testFile));
EXPECT_TRUE(dc.filename.empty());
EXPECT_EQ(0U, dc.inputFd);
EXPECT_STREQ("Error: Could not read initial checkpoint, "
"the compressed log may be corrupted.\r\n",
testing::internal::GetCapturedStderr().c_str());
// Write back an invalid, but not-empty file
oFile.open(testFile);
bzero(buffer, 1000);
oFile.write(buffer, 100);
oFile.close();
// Finally, open a file that at least has a valid checkpoint
Encoder encoder(buffer, 1000);
oFile.open(testFile);
oFile.write(buffer, encoder.getEncodedBytes());
oFile.close();
EXPECT_TRUE(dc.open(testFile));
EXPECT_NE(nullptr, dc.inputFd);
EXPECT_STREQ(testFile, dc.filename.c_str());
std::remove(testFile);
}
TEST_F(LogTest, decoder_insertCheckpoint) {
char backing_buffer[4096];
char *writePos = backing_buffer;
char *endOfBuffer = backing_buffer + sizeof(backing_buffer);
uint64_t startCycles = PerfUtils::Cycles::rdtsc();
uint32_t metadataBytes = GeneratedFunctions::writeDictionary(writePos,
endOfBuffer);
uint32_t numEntries = GeneratedFunctions::numLogIds;
// True Case
ASSERT_TRUE(insertCheckpoint(&writePos, endOfBuffer, true));
Checkpoint *ck = reinterpret_cast<Checkpoint*>(backing_buffer);
EXPECT_EQ(Log::EntryType::CHECKPOINT, ck->entryType);
EXPECT_LT(startCycles, ck->rdtsc);
EXPECT_GT(PerfUtils::Cycles::rdtsc(), ck->rdtsc);
EXPECT_EQ(PerfUtils::Cycles::getCyclesPerSec(), ck->cyclesPerSecond);
EXPECT_EQ(metadataBytes, ck->newMetadataBytes);
EXPECT_EQ(numEntries, ck->totalMetadataEntries);
// False Case
writePos = backing_buffer;
ASSERT_TRUE(insertCheckpoint(&writePos, endOfBuffer, false));
EXPECT_EQ(Log::EntryType::CHECKPOINT, ck->entryType);
EXPECT_LT(startCycles, ck->rdtsc);
EXPECT_GT(PerfUtils::Cycles::rdtsc(), ck->rdtsc);
EXPECT_EQ(PerfUtils::Cycles::getCyclesPerSec(), ck->cyclesPerSecond);
EXPECT_EQ(0U, ck->newMetadataBytes);
EXPECT_EQ(0U, ck->totalMetadataEntries);
// Out of space case
char *newEndOfSpace = backing_buffer + metadataBytes;
writePos = backing_buffer;
ASSERT_FALSE(insertCheckpoint(&writePos, newEndOfSpace, true));
EXPECT_EQ(backing_buffer, writePos);
writePos = backing_buffer;
ASSERT_TRUE(insertCheckpoint(&writePos, newEndOfSpace, false));
EXPECT_EQ(backing_buffer + sizeof(Checkpoint), writePos);
writePos = backing_buffer;
newEndOfSpace = backing_buffer + sizeof(Checkpoint) - 1;
ASSERT_FALSE(insertCheckpoint(&writePos, newEndOfSpace, false));
EXPECT_EQ(backing_buffer, writePos);
}
TEST_F(LogTest, decoder_readDictionary) {
const char *testFile = "/tmp/testFile";
char backing_buffer[4096];
char *writePos = backing_buffer;
char *endOfBuffer = backing_buffer + sizeof(backing_buffer);
PrintFragment *pf;
FormatMetadata *fm, *fm2;
uint32_t fmOffset, fm2Offset;
// The true case is tested in integration tests
insertCheckpoint(&writePos, endOfBuffer, false);
Checkpoint *ck = reinterpret_cast<Checkpoint*>(backing_buffer);
// Basic Log that's from asdfasdfasdf:1234 -> "abab %*.*lfabab"
fmOffset = writePos - backing_buffer - sizeof(Checkpoint);
fm = reinterpret_cast<FormatMetadata*>(writePos);
writePos += sizeof(FormatMetadata);
fm->numNibbles = 1;
fm->numPrintFragments = 2;
fm->logLevel = 2;
fm->lineNumber = 1234;
fm->filenameLength = sizeof("asdfasdfasdf");
writePos = stpcpy(fm->filename, "asdfasdfasdf") + 1;
pf = reinterpret_cast<PrintFragment*>(writePos);
writePos += sizeof(PrintFragment);
pf->argType = NanoLogInternal::Log::FormatType::double_t;
pf->hasDynamicPrecision = true;
pf->hasDynamicWidth = true;
pf->fragmentLength = sizeof("abab %*.*lf");
writePos = stpcpy(writePos, "abab %*.*lf") + 1;
pf = reinterpret_cast<PrintFragment*>(writePos);
writePos += sizeof(PrintFragment);
pf->argType = NONE;
pf->hasDynamicPrecision = false;
pf->hasDynamicWidth = false;
pf->fragmentLength = sizeof("abab");
writePos = stpcpy(writePos, "abab") + 1;
// Log that's from asdfasdfasdf:1234 -> "asdflkaldfjasfdlasdfjal;sdfjaslkdfas"
fm2Offset = writePos - backing_buffer - sizeof(Checkpoint);
fm2 = reinterpret_cast<FormatMetadata*>(writePos);
writePos += sizeof(FormatMetadata);
fm2->numNibbles = 1;
fm2->numPrintFragments = 1;
fm2->logLevel = 2;
fm2->lineNumber = 1234;
fm2->filenameLength = sizeof("asdfasdfasdf");
writePos = stpcpy(fm2->filename, "asdfasdfasdf") + 1;
pf = reinterpret_cast<PrintFragment*>(writePos);
writePos += sizeof(PrintFragment);
pf->argType = NONE;
pf->hasDynamicPrecision = false;
pf->hasDynamicWidth = false;
pf->fragmentLength = sizeof("asdflkaldfjasfdlasdfjal;sdfjaslkdfas");
writePos = stpcpy(writePos, "asdflkaldfjasfdlasdfjal;sdfjaslkdfas") + 1;
uint32_t dictionaryBytes = writePos - backing_buffer - sizeof(Checkpoint);
{
// Test normal case
ck->totalMetadataEntries = 2;
ck->newMetadataBytes = dictionaryBytes;
std::ofstream oFile;
oFile.open(testFile);
oFile.write(backing_buffer, writePos - backing_buffer);
oFile.close();
FILE *fd = fopen(testFile, "rb");
Decoder dc;
EXPECT_TRUE(dc.readDictionary(fd, true));
EXPECT_EQ(dictionaryBytes, dc.endOfRawMetadata - dc.rawMetadata);
EXPECT_EQ(0, memcmp(dc.rawMetadata,
backing_buffer + sizeof(Checkpoint),
dictionaryBytes));
ASSERT_EQ(2, dc.fmtId2metadata.size());
EXPECT_EQ(dc.rawMetadata + fmOffset, dc.fmtId2metadata.at(0));
EXPECT_EQ(dc.rawMetadata + fm2Offset, dc.fmtId2metadata.at(1));
ASSERT_EQ(2, dc.fmtId2fmtString.size());
EXPECT_STREQ("abab %*.*lfabab", dc.fmtId2fmtString.at(0).c_str());
EXPECT_STREQ("asdflkaldfjasfdlasdfjal;sdfjaslkdfas",
dc.fmtId2fmtString.at(1).c_str());
fclose(fd);
std::remove(testFile);
}
{
// Incremental Read
ck->totalMetadataEntries = 2;
ck->newMetadataBytes = dictionaryBytes;