int64_t JNITopend::fragmentProgressUpdate(int32_t batchIndex,
std::string planNodeName,
std::string targetTableName,
int64_t targetTableSize,
int64_t tuplesProcessed,
int64_t currMemoryInBytes,
int64_t peakMemoryInBytes) {
JNILocalFrameBarrier jni_frame = JNILocalFrameBarrier(m_jniEnv, 10);
if (jni_frame.checkResult() < 0) {
VOLT_ERROR("Unable to load dependency: jni frame error.");
throw std::exception();
}
jstring jPlanNodeName = m_jniEnv->NewStringUTF(planNodeName.c_str());
if (m_jniEnv->ExceptionCheck()) {
m_jniEnv->ExceptionDescribe();
throw std::exception();
}
jstring jTargetTableName = m_jniEnv->NewStringUTF(targetTableName.c_str());
if (m_jniEnv->ExceptionCheck()) {
m_jniEnv->ExceptionDescribe();
throw std::exception();
}
jlong nextStep = m_jniEnv->CallLongMethod(m_javaExecutionEngine,m_fragmentProgressUpdateMID,
batchIndex, jPlanNodeName, jTargetTableName, targetTableSize, tuplesProcessed,
currMemoryInBytes, peakMemoryInBytes);
return (int64_t)nextStep;
}
int JNITopend::loadNextDependency(int32_t dependencyId, voltdb::Pool *stringPool, Table* destination) {
VOLT_DEBUG("iterating java dependency for id %d", dependencyId);
JNILocalFrameBarrier jni_frame = JNILocalFrameBarrier(m_jniEnv, 10);
if (jni_frame.checkResult() < 0) {
VOLT_ERROR("Unable to load dependency: jni frame error.");
throw std::exception();
}
jbyteArray jbuf = (jbyteArray)(m_jniEnv->CallObjectMethod(m_javaExecutionEngine,
m_nextDependencyMID,
dependencyId));
if (!jbuf) {
return 0;
}
jsize length = m_jniEnv->GetArrayLength(jbuf);
if (length > 0) {
jboolean is_copy;
jbyte *bytes = m_jniEnv->GetByteArrayElements(jbuf, &is_copy);
// Add the dependency buffer info to the stack object
// so it'll get cleaned up if loadTuplesFrom throws
jni_frame.addDependencyRef(is_copy, jbuf, bytes);
ReferenceSerializeInputBE serialize_in(bytes, length);
destination->loadTuplesFrom(serialize_in, stringPool);
return 1;
}
else {
return 0;
}
}
std::string JNITopend::planForFragmentId(int64_t fragmentId) {
VOLT_DEBUG("fetching plan for id %d", (int) fragmentId);
JNILocalFrameBarrier jni_frame = JNILocalFrameBarrier(m_jniEnv, 10);
if (jni_frame.checkResult() < 0) {
VOLT_ERROR("Unable to load dependency: jni frame error.");
throw std::exception();
}
jbyteArray jbuf = (jbyteArray)(m_jniEnv->CallObjectMethod(m_javaExecutionEngine,
m_planForFragmentIdMID,
fragmentId));
// jbuf might be NULL or might have 0 length here. In that case
// we'll return a 0-length string to the caller, who will return
// an appropriate error.
return jbyteArrayToStdString(m_jniEnv, jni_frame, jbuf);
}
std::string JNITopend::decodeBase64AndDecompress(const std::string& base64Str) {
JNILocalFrameBarrier jni_frame = JNILocalFrameBarrier(m_jniEnv, 2);
if (jni_frame.checkResult() < 0) {
VOLT_ERROR("Unable to load dependency: jni frame error.");
throw std::exception();
}
jstring jBase64Str = m_jniEnv->NewStringUTF(base64Str.c_str());
if (m_jniEnv->ExceptionCheck()) {
m_jniEnv->ExceptionDescribe();
throw std::exception();
}
jbyteArray jbuf = (jbyteArray)m_jniEnv->CallStaticObjectMethod(m_encoderClass,
m_decodeBase64AndDecompressToBytesMID,
jBase64Str);
return jbyteArrayToStdString(m_jniEnv, jni_frame, jbuf);
}
void JNITopend::fallbackToEEAllocatedBuffer(char *buffer, size_t length) {
JNILocalFrameBarrier jni_frame = JNILocalFrameBarrier(m_jniEnv, 1);
if (jni_frame.checkResult() < 0) {
VOLT_ERROR("Unable to load dependency: jni frame error.");
throw std::exception();
}
jobject jbuffer = m_jniEnv->NewDirectByteBuffer(buffer, length);
if (jbuffer == NULL) {
m_jniEnv->ExceptionDescribe();
throw std::exception();
}
m_jniEnv->CallVoidMethod(m_javaExecutionEngine, m_fallbackToEEAllocatedBufferMID, jbuffer);
if (m_jniEnv->ExceptionCheck()) {
m_jniEnv->ExceptionDescribe();
throw std::exception();
}
}
void JNITopend::crashVoltDB(FatalException e) {
//Enough references for the reason string, traces array, and traces strings
JNILocalFrameBarrier jni_frame =
JNILocalFrameBarrier(
m_jniEnv,
static_cast<int32_t>(e.m_traces.size()) + 4);
if (jni_frame.checkResult() < 0) {
VOLT_ERROR("Unable to load dependency: jni frame error.");
throw std::exception();
}
jstring jReason = m_jniEnv->NewStringUTF(e.m_reason.c_str());
if (m_jniEnv->ExceptionCheck()) {
m_jniEnv->ExceptionDescribe();
throw std::exception();
}
jstring jFilename = m_jniEnv->NewStringUTF(e.m_filename);
if (m_jniEnv->ExceptionCheck()) {
m_jniEnv->ExceptionDescribe();
throw std::exception();
}
jobjectArray jTracesArray =
m_jniEnv->NewObjectArray(
static_cast<jsize>(e.m_traces.size()),
m_jniEnv->FindClass("java/lang/String"),
NULL);
if (m_jniEnv->ExceptionCheck()) {
m_jniEnv->ExceptionDescribe();
throw std::exception();
}
for (int ii = 0; ii < e.m_traces.size(); ii++) {
jstring traceString = m_jniEnv->NewStringUTF(e.m_traces[ii].c_str());
m_jniEnv->SetObjectArrayElement( jTracesArray, ii, traceString);
}
m_jniEnv->CallStaticVoidMethod(
m_jniEnv->GetObjectClass(m_javaExecutionEngine),
m_crashVoltDBMID,
jReason,
jTracesArray,
jFilename,
static_cast<int32_t>(e.m_lineno));
throw std::exception();
}
std::string JNITopend::planForFragmentId(int64_t fragmentId) {
VOLT_DEBUG("fetching plan for id %d", (int) fragmentId);
JNILocalFrameBarrier jni_frame = JNILocalFrameBarrier(m_jniEnv, 10);
if (jni_frame.checkResult() < 0) {
VOLT_ERROR("Unable to load dependency: jni frame error.");
throw std::exception();
}
jbyteArray jbuf = (jbyteArray)(m_jniEnv->CallObjectMethod(m_javaExecutionEngine,
m_planForFragmentIdMID,
fragmentId));
if (!jbuf) {
// this will be trapped later ;-)
return std::string("");
}
jsize length = m_jniEnv->GetArrayLength(jbuf);
if (length > 0) {
jboolean is_copy;
jbyte *bytes = m_jniEnv->GetByteArrayElements(jbuf, &is_copy);
// Add the plan buffer info to the stack object
// so it'll get cleaned up if loadTuplesFrom throws
jni_frame.addDependencyRef(is_copy, jbuf, bytes);
// make a null terminated copy
boost::scoped_array<char> strdata(new char[length + 1]);
memcpy(strdata.get(), bytes, length);
strdata.get()[length] = '\0';
return std::string(strdata.get());
}
else {
// this will be trapped later ;-)
return std::string("");
}
}