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#include <TestSupport.h>
#include <boost/thread.hpp>
#include <string>
#include <BackgroundEventLoop.h>
#include <Constants.h>
#include <LoggingKit/LoggingKit.h>
#include <StaticString.h>
#include <ServerKit/FileBufferedChannel.h>
#include <StrIntTools/StrIntUtils.h>
using namespace Passenger;
using namespace Passenger::ServerKit;
using namespace Passenger::MemoryKit;
using namespace std;
namespace tut {
#define CONSUME_FULLY -2
struct ServerKit_FileBufferedChannelTest: public TestBase, public ServerKit::Hooks {
BackgroundEventLoop bg;
ServerKit::Schema skSchema;
ServerKit::Context context;
FileBufferedChannel channel;
boost::mutex syncher;
int toConsume;
bool endConsume;
unsigned int counter;
unsigned int buffersFlushed;
string log;
ServerKit_FileBufferedChannelTest()
: bg(false, true),
context(skSchema),
channel(&context),
toConsume(CONSUME_FULLY),
endConsume(false),
counter(0),
buffersFlushed(0)
{
context.libev = bg.safe;
context.libuv = bg.libuv_loop;
context.initialize();
channel.setDataCallback(dataCallback);
channel.setBuffersFlushedCallback(buffersFlushedCallback);
channel.setHooks(this);
Hooks::impl = NULL;
Hooks::userData = NULL;
}
~ServerKit_FileBufferedChannelTest() {
startLoop();
bg.safe->runSync(boost::bind(&ServerKit_FileBufferedChannelTest::deinitializeChannel,
this));
bg.stop(); // Prevent any runLater callbacks from running.
}
void deinitializeChannel() {
channel.deinitialize(); // Cancel any event loop next tick callbacks.
}
void startLoop() {
if (!bg.isStarted()) {
bg.start();
}
}
static Channel::Result dataCallback(Channel *_channel, const mbuf &buffer, int errcode)
{
FileBufferedChannel *channel = reinterpret_cast<FileBufferedChannel *>(_channel);
ServerKit_FileBufferedChannelTest *self = (ServerKit_FileBufferedChannelTest *)
channel->getHooks();
boost::lock_guard<boost::mutex> l(self->syncher);
if (errcode == 0) {
self->counter++;
if (buffer.empty()) {
self->log.append("EOF\n");
} else {
StaticString str(buffer.start, buffer.size());
self->log.append("Data: " + cEscapeString(str) + "\n");
}
} else {
self->log.append("Error: " + toString(errcode) + "\n");
}
if (self->toConsume == CONSUME_FULLY) {
return Channel::Result(buffer.size(), self->endConsume);
} else {
return Channel::Result(self->toConsume, self->endConsume);
}
}
static void buffersFlushedCallback(FileBufferedChannel *channel) {
ServerKit_FileBufferedChannelTest *self = (ServerKit_FileBufferedChannelTest *)
channel->getHooks();
boost::lock_guard<boost::mutex> l(self->syncher);
self->buffersFlushed++;
}
void feedChannel(const string &data) {
bg.safe->runLater(boost::bind(&ServerKit_FileBufferedChannelTest::_feedChannel,
this, data));
}
void _feedChannel(string data) {
assert(data.size() < context.mbuf_pool.mbuf_block_chunk_size);
mbuf buf = mbuf_get(&context.mbuf_pool);
memcpy(buf.start, data.data(), data.size());
buf = mbuf(buf, 0, (unsigned int) data.size());
channel.feed(buf);
}
void feedChannelError(int errcode) {
bg.safe->runLater(boost::bind(&ServerKit_FileBufferedChannelTest::_feedChannelError,
this, errcode));
}
void _feedChannelError(int errcode) {
channel.feedError(errcode);
}
void channelConsumed(int size, bool end) {
bg.safe->runLater(boost::bind(&ServerKit_FileBufferedChannelTest::_channelConsumed,
this, size, end));
}
void _channelConsumed(int size, bool end) {
channel.consumed(size, end);
}
Channel::State getChannelState() {
Channel::State result;
bg.safe->runSync(boost::bind(&ServerKit_FileBufferedChannelTest::_getChannelState,
this, &result));
return result;
}
void _getChannelState(Channel::State *result) {
*result = channel.getState();
}
FileBufferedChannel::Mode getChannelMode() {
FileBufferedChannel::Mode result;
bg.safe->runSync(boost::bind(&ServerKit_FileBufferedChannelTest::_getChannelMode,
this, &result));
return result;
}
void _getChannelMode(FileBufferedChannel::Mode *result) {
*result = channel.getMode();
}
FileBufferedChannel::ReaderState getChannelReaderState() {
FileBufferedChannel::ReaderState result;
bg.safe->runSync(boost::bind(&ServerKit_FileBufferedChannelTest::_getChannelReaderState,
this, &result));
return result;
}
void _getChannelReaderState(FileBufferedChannel::ReaderState *result) {
*result = channel.getReaderState();
}
FileBufferedChannel::WriterState getChannelWriterState() {
FileBufferedChannel::WriterState result;
bg.safe->runSync(boost::bind(&ServerKit_FileBufferedChannelTest::_getChannelWriterState,
this, &result));
return result;
}
void _getChannelWriterState(FileBufferedChannel::WriterState *result) {
*result = channel.getWriterState();
}
unsigned int getChannelBytesBuffered() {
unsigned int result;
bg.safe->runSync(boost::bind(&ServerKit_FileBufferedChannelTest::_getChannelBytesBuffered,
this, &result));
return result;
}
void _getChannelBytesBuffered(unsigned int *result) {
*result = channel.getBytesBuffered();
}
bool contextConfigure(const Json::Value &doc, vector<ConfigKit::Error> &errors) {
bool result;
bg.safe->runSync(boost::bind(&ServerKit_FileBufferedChannelTest::_contextConfigure,
this, &doc, &errors, &result));
return result;
}
void _contextConfigure(const Json::Value *doc, vector<ConfigKit::Error> *errors,
bool *result)
{
*result = context.configure(*doc, *errors);
}
void channelEnableAutoStartMover(bool enabled) {
Json::Value doc;
vector<ConfigKit::Error> errors;
doc["file_buffered_channel_auto_start_mover"] = enabled;
if (!contextConfigure(doc, errors)) {
P_BUG("Unable to set auto_start_mover = " << enabled << ": " << toString(errors));
}
}
void startChannel() {
bg.safe->runLater(boost::bind(&ServerKit_FileBufferedChannelTest::_startChannel,
this));
}
void _startChannel() {
channel.start();
}
void setChannelDataCallback(FileBufferedChannel::DataCallback callback) {
bg.safe->runLater(boost::bind(&ServerKit_FileBufferedChannelTest::_setChannelDataCallback,
this, callback));
}
void _setChannelDataCallback(FileBufferedChannel::DataCallback callback) {
channel.setDataCallback(callback);
}
};
DEFINE_TEST_GROUP_WITH_LIMIT(ServerKit_FileBufferedChannelTest, 100);
#define LOCK() boost::unique_lock<boost::mutex> l(syncher)
#define UNLOCK() l.unlock()
/***** Initial state *****/
TEST_METHOD(1) {
set_test_name("It is initially in the in-memory mode, and the reader is initially inactive");
startLoop();
ensure_equals(getChannelMode(), FileBufferedChannel::IN_MEMORY_MODE);
ensure_equals(getChannelReaderState(), FileBufferedChannel::RS_INACTIVE);
}
/***** When in the in-memory mode *****/
TEST_METHOD(5) {
set_test_name("Upon feeding data, it calls the callback");
startLoop();
feedChannel("hello");
EVENTUALLY(5,
LOCK();
result = log == "Data: hello\n";
);
EVENTUALLY(5,
result = getChannelReaderState() == FileBufferedChannel::RS_INACTIVE;
);
}
TEST_METHOD(6) {
set_test_name("Upon feeding data, and the previous data callback isn't done "
"consuming yet, it calls the callback with the new data "
"after the previous data callback is done consuming");
toConsume = -1;
startLoop();
feedChannel("hello");
feedChannel("world");
feedChannel("!");
SHOULD_NEVER_HAPPEN(100,
LOCK();
result = log.find("world") != string::npos
|| log.find("!") != string::npos;
);
channelConsumed(sizeof("hello") - 1, false);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Data: world\n";
);
channelConsumed(sizeof("world") - 1, false);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Data: world\n"
"Data: !\n";
);
channelConsumed(sizeof("!") - 1, false);
EVENTUALLY(5,
result = getChannelReaderState() == FileBufferedChannel::RS_INACTIVE;
);
}
TEST_METHOD(7) {
set_test_name("Upon feeding data, if the total amount of data is below the threshold, "
"then it remains in the in-memory mode");
toConsume = -1;
startLoop();
feedChannel("hello");
SHOULD_NEVER_HAPPEN(100,
result = getChannelMode() != FileBufferedChannel::IN_MEMORY_MODE;
);
}
TEST_METHOD(9) {
set_test_name("Upon feeding EOF, it calls the callback with an EOF");
startLoop();
feedChannel("");
EVENTUALLY(5,
LOCK();
result = log == "EOF\n";
);
}
TEST_METHOD(10) {
set_test_name("Upon feeding EOF, the internal reader eventually switches to RS_TERMINATED");
startLoop();
feedChannel("");
EVENTUALLY(5,
result = getChannelReaderState() == FileBufferedChannel::RS_TERMINATED;
);
}
TEST_METHOD(11) {
set_test_name("Once EOF has been fed, any further data feds have no effect");
startLoop();
feedChannel("");
feedChannel("hello");
EVENTUALLY(5,
LOCK();
result = log == "EOF\n";
);
SHOULD_NEVER_HAPPEN(100,
LOCK();
result = log != "EOF\n";
);
}
TEST_METHOD(12) {
set_test_name("If the callback indicates that it is done consuming, the internal "
"reader eventually switches to RS_TERMINATED");
endConsume = true;
startLoop();
feedChannel("hello");
EVENTUALLY(5,
LOCK();
result = log == "Data: hello\n";
);
EVENTUALLY(5,
result = getChannelReaderState() == FileBufferedChannel::RS_TERMINATED;
);
}
TEST_METHOD(13) {
set_test_name("Once the callback has indicated that it is done consuming, any further data "
"feds have no effect");
endConsume = true;
startLoop();
feedChannel("hello");
feedChannel("world");
EVENTUALLY(5,
LOCK();
result = log == "Data: hello\n";
);
SHOULD_NEVER_HAPPEN(100,
LOCK();
result = log != "Data: hello\n";
);
}
TEST_METHOD(14) {
set_test_name("Upon feeding an error, it calls the callback with an error");
startLoop();
feedChannelError(EIO);
EVENTUALLY(5,
LOCK();
result = log == "Error: " + toString(EIO) + "\n";
);
}
TEST_METHOD(15) {
set_test_name("Upon feeding an error, the internal reader eventually switches to RS_TERMINATED");
startLoop();
feedChannelError(EIO);
EVENTUALLY(5,
result = getChannelReaderState() == FileBufferedChannel::RS_TERMINATED;
);
}
TEST_METHOD(16) {
set_test_name("Once an error has been fed, any further data feds have no effect");
startLoop();
feedChannelError(EIO);
feedChannel("hello");
EVENTUALLY(5,
LOCK();
result = log == "Error: " + toString(EIO) + "\n";
);
SHOULD_NEVER_HAPPEN(100,
LOCK();
result = log != "Error: " + toString(EIO) + "\n";
);
}
/***** When switching from in-memory mode to in-file mode *****/
TEST_METHOD(20) {
set_test_name("Upon feeding so much data that the threshold is passed, "
"it switches to the in-file mode and calls the callback later with the fed data");
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
ensure(context.configure(config, errors));
toConsume = -1;
startLoop();
feedChannel("hello");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
channelConsumed(sizeof("hello") - 1, false);
EVENTUALLY(5,
LOCK();
result = log == "Data: hello\n";
);
EVENTUALLY(5,
result = getChannelReaderState() == FileBufferedChannel::RS_INACTIVE;
);
}
TEST_METHOD(21) {
set_test_name("Any fed data is immediately passed to the callback");
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
config["file_buffered_channel_delay_in_file_mode_switching"] = 50000;
config["file_buffered_channel_auto_truncate_file"] = false;
ensure(context.configure(config, errors));
startLoop();
feedChannel("hello");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
ensure_equals(getChannelWriterState(), FileBufferedChannel::WS_CREATING_FILE);
EVENTUALLY(5,
LOCK();
result = log == "Data: hello\n";
);
}
TEST_METHOD(22) {
set_test_name("If the previous callback isn't done consuming, any fed data is "
"buffered in memory, and passed to the callback when the previous callback "
"is done");
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
config["file_buffered_channel_delay_in_file_mode_switching"] = 50000;
config["file_buffered_channel_auto_truncate_file"] = false;
ensure(context.configure(config, errors));
toConsume = -1;
startLoop();
feedChannel("hello");
feedChannel("world");
feedChannel("!");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
ensure_equals(getChannelWriterState(), FileBufferedChannel::WS_CREATING_FILE);
SHOULD_NEVER_HAPPEN(100,
LOCK();
result = log != "Data: hello\n";
);
ensure_equals(getChannelBytesBuffered(), sizeof("helloworld!") - 1);
EVENTUALLY(5,
result = getChannelState() == Channel::WAITING_FOR_CALLBACK;
);
channelConsumed(sizeof("hello") - 1, false);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Data: world\n";
);
ensure_equals(getChannelBytesBuffered(), sizeof("helloworld!") - 1);
EVENTUALLY(5,
result = getChannelState() == Channel::WAITING_FOR_CALLBACK;
);
channelConsumed(sizeof("world") - 1, false);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Data: world\n"
"Data: !\n";
);
ensure_equals(getChannelBytesBuffered(), sizeof("helloworld!") - 1);
}
/***** When in the in-file mode *****/
TEST_METHOD(30) {
set_test_name("It slowly moves memory buffers to disk");
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
ensure(context.configure(config, errors));
toConsume = -1;
startLoop();
feedChannel("hello");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
EVENTUALLY(5,
result = getChannelWriterState() == FileBufferedChannel::WS_INACTIVE;
);
ensure_equals(getChannelBytesBuffered(), 0u);
}
TEST_METHOD(31) {
set_test_name("If all memory buffers have been moved to disk, then "
"when new data is fed, the new data is also eventually moved to disk");
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
ensure(context.configure(config, errors));
toConsume = -1;
startLoop();
feedChannel("hello");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
EVENTUALLY(5,
result = getChannelWriterState() == FileBufferedChannel::WS_INACTIVE;
);
ensure_equals(getChannelBytesBuffered(), 0u);
feedChannel("world");
EVENTUALLY(5,
result = getChannelBytesBuffered() == 0;
);
ensure_equals(getChannelWriterState(), FileBufferedChannel::WS_INACTIVE);
}
TEST_METHOD(32) {
set_test_name("If there is unread data on disk, it reads them and passes "
"them to the callback");
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
ensure(context.configure(config, errors));
toConsume = -1;
startLoop();
feedChannel("hello");
feedChannel("world!");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
EVENTUALLY(5,
result = getChannelWriterState() == FileBufferedChannel::WS_INACTIVE;
);
ensure_equals(getChannelBytesBuffered(), 0u);
channelConsumed(sizeof("hello") - 1, false);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Data: world!\n";
);
}
TEST_METHOD(33) {
set_test_name("Suppose that a data chunk from disk is being passed to the callback. "
"If the callback consumes the chunk immediately and is willing to accept "
"further data, then the FileBufferedChannel will repeat this process with the "
"next chunk from disk");
// Setup a FileBufferedChannel in the in-file mode.
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
ensure(context.configure(config, errors));
toConsume = -1;
startLoop();
feedChannel("hello");
feedChannel("world!");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
EVENTUALLY(5,
result = getChannelWriterState() == FileBufferedChannel::WS_INACTIVE;
);
ensure_equals(getChannelBytesBuffered(), 0u);
// Consume the initial "hello" so that the FileBufferedChannel starts
// reading "world" from disk. When "world" is read, we first consume
// "world" only, then "!" too.
config = Json::Value();
config["file_buffered_channel_max_disk_chunk_read_size"] =
Json::UInt(sizeof("world") - 1);
ensure(contextConfigure(config, errors));
toConsume = CONSUME_FULLY;
channelConsumed(sizeof("hello") - 1, false);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Data: world\n"
"Data: !\n";
);
}
TEST_METHOD(34) {
set_test_name("Suppose that a data chunk from disk is being passed to the callback. "
"If the callback consumes the chunk asynchronously, and is willing "
"to accept further data, then the FileBufferedChannel will repeat this process "
"with the next chunk from disk after the channel has become idle");
// Setup a FileBufferedChannel in the in-file mode.
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
ensure(context.configure(config, errors));
toConsume = -1;
startLoop();
feedChannel("hello");
feedChannel("world!");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
EVENTUALLY(5,
result = getChannelWriterState() == FileBufferedChannel::WS_INACTIVE;
);
ensure_equals(getChannelBytesBuffered(), 0u);
// Consume the initial "hello" so that the FileBufferedChannel starts
// reading "world" from disk.
config = Json::Value();
config["file_buffered_channel_max_disk_chunk_read_size"] =
Json::UInt(sizeof("world") - 1);
ensure(contextConfigure(config, errors));
channelConsumed(sizeof("hello") - 1, false);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n";
);
// We haven't consumed "world" yet, so the FileBufferedChannel should
// be waiting for it to become idle.
EVENTUALLY(5,
result = getChannelReaderState() == FileBufferedChannel::RS_WAITING_FOR_CHANNEL_IDLE;
);
// Now consume "world".
channelConsumed(sizeof("world") - 1, false);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Data: world\n";
);
// We haven't consumed "!" yet, so the FileBufferedChannel should
// be waiting for it to become idle.
EVENTUALLY(5,
result = getChannelReaderState() == FileBufferedChannel::RS_WAITING_FOR_CHANNEL_IDLE;
);
// Now consume "!".
channelConsumed(sizeof("!") - 1, false);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Data: world\n"
"Data: !\n";
);
}
TEST_METHOD(35) {
set_test_name("Suppose that a data chunk from disk is being passed to the callback. "
"If the callback consumes the chunk immediately, but is not willing "
"to accept further data, then the FileBufferedChannel will terminate");
// Setup a FileBufferedChannel in the in-file mode.
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
ensure(context.configure(config, errors));
toConsume = -1;
startLoop();
feedChannel("hello");
feedChannel("world!");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
EVENTUALLY(5,
result = getChannelWriterState() == FileBufferedChannel::WS_INACTIVE;
);
ensure_equals(getChannelBytesBuffered(), 0u);
// Consume the initial "hello" so that the FileBufferedChannel starts
// reading "world" from disk. When it is read, we will consume it fully
// while ending the channel.
config = Json::Value();
config["file_buffered_channel_max_disk_chunk_read_size"] =
Json::UInt(sizeof("world") - 1);
ensure(contextConfigure(config, errors));
toConsume = CONSUME_FULLY;
endConsume = true;
channelConsumed(sizeof("hello") - 1, false);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Data: world\n";
);
EVENTUALLY(5,
result = getChannelReaderState() == FileBufferedChannel::RS_TERMINATED;
);
SHOULD_NEVER_HAPPEN(100,
LOCK();
result = log !=
"Data: hello\n"
"Data: world\n";
);
}
TEST_METHOD(36) {
set_test_name("If there is no unread data on disk, it passes the next "
"in-memory buffer to the callback");
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
ensure(context.configure(config, errors));
toConsume = -1;
startLoop();
feedChannel("hello");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
EVENTUALLY(5,
result = getChannelWriterState() == FileBufferedChannel::WS_INACTIVE;
);
ensure_equals(getChannelBytesBuffered(), 0u);
channelEnableAutoStartMover(false);
feedChannel("world!");
feedChannel("the end");
ensure_equals(getChannelBytesBuffered(), sizeof("world!the end") - 1);
ensure_equals("channelEnableAutoStartMover works",
getChannelWriterState(), FileBufferedChannel::WS_INACTIVE);
channelConsumed(sizeof("hello") - 1, false);
EVENTUALLY(5,
LOCK();
result = counter == 2
&& getChannelState() == Channel::WAITING_FOR_CALLBACK;
);
channelConsumed(sizeof("world!") - 1, false);
EVENTUALLY(5,
LOCK();
result = counter == 3
&& getChannelState() == Channel::WAITING_FOR_CALLBACK;
);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Data: world!\n"
"Data: the end\n";
);
}
TEST_METHOD(37) {
set_test_name("Upon feeding EOF, the EOF is passed to the callback after "
"all on-disk and in-memory data is passed");
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
ensure(context.configure(config, errors));
toConsume = -1;
startLoop();
feedChannel("hello");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
EVENTUALLY(5,
result = getChannelWriterState() == FileBufferedChannel::WS_INACTIVE;
);
ensure_equals(getChannelBytesBuffered(), 0u);
channelEnableAutoStartMover(false);
feedChannel("world!");
feedChannel("the end");
feedChannel("");
ensure_equals(getChannelBytesBuffered(), sizeof("world!the end") - 1);
ensure_equals("channelDisableAutoStartMover works",
getChannelWriterState(), FileBufferedChannel::WS_INACTIVE);
channelConsumed(sizeof("hello") - 1, false);
EVENTUALLY(5,
LOCK();
result = counter == 2
&& getChannelState() == Channel::WAITING_FOR_CALLBACK;
);
channelConsumed(sizeof("world!") - 1, false);
EVENTUALLY(5,
LOCK();
result = counter == 3
&& getChannelState() == Channel::WAITING_FOR_CALLBACK;
);
SHOULD_NEVER_HAPPEN(100,
LOCK();
result = log !=
"Data: hello\n"
"Data: world!\n"
"Data: the end\n";
);
channelConsumed(sizeof("the end") - 1, false);
EVENTUALLY(5,
LOCK();
result = counter == 4
&& getChannelState() == Channel::WAITING_FOR_CALLBACK_WITH_EOF_OR_ERROR;
);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Data: world!\n"
"Data: the end\n"
"EOF\n";
);
}
TEST_METHOD(38) {
set_test_name("Upon feeding an error, it switches to the error mode immediately "
"and it doesn't call the callback");
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
ensure(context.configure(config, errors));
toConsume = -1;
startLoop();
feedChannel("hello");
feedChannel("world");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
EVENTUALLY(5,
result = getChannelWriterState() == FileBufferedChannel::WS_INACTIVE;
);
ensure_equals(getChannelBytesBuffered(), 0u);
feedChannelError(EIO);
EVENTUALLY(5,
result = getChannelReaderState() == FileBufferedChannel::RS_TERMINATED;
);
ensure_equals(getChannelMode(), FileBufferedChannel::ERROR_WAITING);
channelConsumed(sizeof("hello") - 1, false);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Error: " + toString(EIO) + "\n";
);
}
/***** Switching from in-file mode to in-memory mode *****/
TEST_METHOD(40) {
set_test_name("When all on-disk and in-memory buffers have been read, it switches to in-memory mode");
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
ensure(context.configure(config, errors));
toConsume = -1;
startLoop();
feedChannel("hello");
feedChannel("world!");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
EVENTUALLY(5,
result = getChannelWriterState() == FileBufferedChannel::WS_INACTIVE;
);
ensure_equals(getChannelBytesBuffered(), 0u);
channelConsumed(sizeof("hello") - 1, false);
EVENTUALLY(5,
LOCK();
result = counter == 2
&& getChannelState() == Channel::WAITING_FOR_CALLBACK;
);
channelConsumed(sizeof("world!") - 1, false);
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_MEMORY_MODE;
);
{
LOCK();
toConsume = CONSUME_FULLY;
}
feedChannel("!");
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Data: world!\n"
"Data: !\n";
);
}
TEST_METHOD(41) {
set_test_name("It calls the buffersFlushedCallback if the switching happens while "
"there are buffers in memory that haven't been written to disk yet");
Json::Value config;
vector<ConfigKit::Error> errors;
config["file_buffered_channel_threshold"] = 1;
config["file_buffered_channel_delay_in_file_mode_switching"] = 1000;
ensure(context.configure(config, errors));
toConsume = -1;
startLoop();
feedChannel("hello");
feedChannel("world!");
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_FILE_MODE;
);
ensure_equals(getChannelBytesBuffered(), 11u);
channelConsumed(sizeof("hello") - 1, false);
channelConsumed(sizeof("world!") - 1, false);
EVENTUALLY(5,
result = getChannelMode() == FileBufferedChannel::IN_MEMORY_MODE;
);
EVENTUALLY(5,
LOCK();
result = buffersFlushed == 1;
);
}
/***** When stopped *****/
TEST_METHOD(45) {
set_test_name("Upon feeding data, it calls the callback when start() is called");
channel.stop();
startLoop();
feedChannel("hello");
ensure_equals(getChannelBytesBuffered(), 5u);
feedChannel("world");
ensure_equals(getChannelBytesBuffered(), 10u);
ensure_equals(getChannelReaderState(),
FileBufferedChannel::RS_WAITING_FOR_CHANNEL_IDLE);
SHOULD_NEVER_HAPPEN(100,
result = getChannelBytesBuffered() != 10;
);
SHOULD_NEVER_HAPPEN(100,
LOCK();
result = !log.empty();
);
startChannel();
EVENTUALLY(5,
result = getChannelBytesBuffered() == 0;
);
EVENTUALLY(5,
LOCK();
result = log ==
"Data: hello\n"
"Data: world\n";
);
}
static Channel::Result test_46_callback(Channel *_channel, const mbuf &buffer,
int errcode)
{
FileBufferedChannel *channel = reinterpret_cast<FileBufferedChannel *>(_channel);
ServerKit_FileBufferedChannelTest *self = (ServerKit_FileBufferedChannelTest *)
channel->getHooks();
boost::mutex &syncher = self->syncher;
{
LOCK();
self->counter++;
}
channel->stop();
return Channel::Result(buffer.size(), false);
}
TEST_METHOD(46) {
set_test_name("If stop() is called in the callback, it doesn't call the "
"callback with remaining buffers until start() is called");
channel.setDataCallback(test_46_callback);
startLoop();
feedChannel("hello");
feedChannel("world");
EVENTUALLY(5,
result = getChannelBytesBuffered() == 5;
);
{
LOCK();
ensure_equals(counter, 1u);
}
setChannelDataCallback(dataCallback);
startChannel();
EVENTUALLY(5,
result = getChannelBytesBuffered() == 0;
);
{
LOCK();
ensure_equals(counter, 2u);
}
}
}