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http_server.cc
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// Copyright 2019-2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifdef _WIN32
#define NOMINMAX
#endif
#include "src/servers/http_server.h"
#include <event2/buffer.h>
#include <google/protobuf/text_format.h>
#include <google/protobuf/util/json_util.h>
#include <re2/re2.h>
#include <algorithm>
#include <list>
#include <thread>
#include "src/core/constants.h"
#include "src/core/logging.h"
#include "src/core/model_config.h"
#include "src/servers/classification.h"
#include "src/servers/data_compressor.h"
#define TRITONJSON_STATUSTYPE TRITONSERVER_Error*
#define TRITONJSON_STATUSRETURN(M) \
return TRITONSERVER_ErrorNew(TRITONSERVER_ERROR_INTERNAL, (M).c_str())
#define TRITONJSON_STATUSSUCCESS nullptr
#include "triton/common/triton_json.h"
#ifdef TRITON_ENABLE_GPU
extern "C" {
#include <b64/cdecode.h>
}
#endif // TRITON_ENABLE_GPU
#ifdef TRITON_ENABLE_TRACING
#include "src/servers/tracer.h"
#endif // TRITON_ENABLE_TRACING
namespace nvidia { namespace inferenceserver {
#define HTTP_RESPOND_IF_ERR(REQ, X) \
do { \
TRITONSERVER_Error* err__ = (X); \
if (err__ != nullptr) { \
EVBufferAddErrorJson((REQ)->buffer_out, err__); \
evhtp_send_reply((REQ), EVHTP_RES_BADREQ); \
TRITONSERVER_ErrorDelete(err__); \
return; \
} \
} while (false)
TRITONSERVER_Error*
HTTPServer::Start()
{
if (!worker_.joinable()) {
evbase_ = event_base_new();
htp_ = evhtp_new(evbase_, NULL);
evhtp_enable_flag(htp_, EVHTP_FLAG_ENABLE_NODELAY);
evhtp_set_gencb(htp_, HTTPServer::Dispatch, this);
evhtp_use_threads_wexit(htp_, NULL, NULL, thread_cnt_, NULL);
evhtp_bind_socket(htp_, "0.0.0.0", port_, 1024);
// Set listening event for breaking event loop
evutil_socketpair(AF_UNIX, SOCK_STREAM, 0, fds_);
break_ev_ = event_new(evbase_, fds_[0], EV_READ, StopCallback, evbase_);
event_add(break_ev_, NULL);
worker_ = std::thread(event_base_loop, evbase_, 0);
return nullptr;
}
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_ALREADY_EXISTS, "HTTP server is already running.");
}
TRITONSERVER_Error*
HTTPServer::Stop()
{
if (worker_.joinable()) {
// Notify event loop to break via fd write
send(fds_[1], (const char*)&evbase_, sizeof(event_base*), 0);
worker_.join();
event_free(break_ev_);
evutil_closesocket(fds_[0]);
evutil_closesocket(fds_[1]);
evhtp_unbind_socket(htp_);
evhtp_free(htp_);
event_base_free(evbase_);
return nullptr;
}
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_UNAVAILABLE, "HTTP server is not running.");
}
void
HTTPServer::StopCallback(evutil_socket_t sock, short events, void* arg)
{
struct event_base* base = (struct event_base*)arg;
event_base_loopbreak(base);
}
void
HTTPServer::Dispatch(evhtp_request_t* req, void* arg)
{
(static_cast<HTTPServer*>(arg))->Handle(req);
}
#ifdef TRITON_ENABLE_METRICS
void
HTTPMetricsServer::Handle(evhtp_request_t* req)
{
LOG_VERBOSE(1) << "HTTP request: " << req->method << " "
<< req->uri->path->full;
if (req->method != htp_method_GET) {
evhtp_send_reply(req, EVHTP_RES_METHNALLOWED);
return;
}
evhtp_res res = EVHTP_RES_BADREQ;
// Call to metric endpoint should not have any trailing string
if (RE2::FullMatch(std::string(req->uri->path->full), api_regex_)) {
TRITONSERVER_Metrics* metrics = nullptr;
TRITONSERVER_Error* err =
TRITONSERVER_ServerMetrics(server_.get(), &metrics);
if (err == nullptr) {
const char* base;
size_t byte_size;
err = TRITONSERVER_MetricsFormatted(
metrics, TRITONSERVER_METRIC_PROMETHEUS, &base, &byte_size);
if (err == nullptr) {
res = EVHTP_RES_OK;
evbuffer_add(req->buffer_out, base, byte_size);
}
}
TRITONSERVER_MetricsDelete(metrics);
TRITONSERVER_ErrorDelete(err);
}
evhtp_send_reply(req, res);
}
TRITONSERVER_Error*
HTTPMetricsServer::Create(
const std::shared_ptr<TRITONSERVER_Server>& server, const int32_t port,
const int thread_cnt, std::unique_ptr<HTTPServer>* metrics_server)
{
metrics_server->reset(new HTTPMetricsServer(server, port, thread_cnt));
const std::string addr = "0.0.0.0:" + std::to_string(port);
LOG_INFO << "Started Metrics Service at " << addr;
return nullptr;
}
#endif // TRITON_ENABLE_METRICS
namespace {
// Allocate an evbuffer of size 'byte_size'. Return the 'evb' and
// the 'base' address of the buffer contents.
TRITONSERVER_Error*
AllocEVBuffer(const size_t byte_size, evbuffer** evb, void** base)
{
evbuffer* evhttp_buffer = evbuffer_new();
if (evhttp_buffer == nullptr) {
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INTERNAL,
"failed to create evbuffer for output tensor");
}
// Reserve requested space in evbuffer...
struct evbuffer_iovec output_iovec;
if (evbuffer_reserve_space(evhttp_buffer, byte_size, &output_iovec, 1) != 1) {
evbuffer_free(evhttp_buffer);
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INTERNAL,
std::string(
"failed to reserve " + std::to_string(byte_size) +
" bytes in output tensor buffer")
.c_str());
}
if (output_iovec.iov_len < byte_size) {
evbuffer_free(evhttp_buffer);
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INTERNAL,
std::string(
"reserved " + std::to_string(output_iovec.iov_len) +
" bytes in output tensor buffer, need " + std::to_string(byte_size))
.c_str());
}
output_iovec.iov_len = byte_size;
*base = output_iovec.iov_base;
// Immediately commit the buffer space. We are relying on evbuffer
// not to relocate this space. Because we request a contiguous
// chunk every time (above by allowing only a single entry in
// output_iovec), this seems to be a valid assumption.
if (evbuffer_commit_space(evhttp_buffer, &output_iovec, 1) != 0) {
*base = nullptr;
evbuffer_free(evhttp_buffer);
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INTERNAL,
"failed to commit output tensors to output buffer");
}
*evb = evhttp_buffer;
return nullptr; // success
}
TRITONSERVER_Error*
JsonBytesArrayByteSize(
triton::common::TritonJson::Value& tensor_data, size_t* byte_size)
{
*byte_size = 0;
for (size_t i = 0; i < tensor_data.ArraySize(); i++) {
triton::common::TritonJson::Value el;
RETURN_IF_ERR(tensor_data.At(i, &el));
// Recurse if not last dimension...
TRITONSERVER_Error* assert_err =
el.AssertType(triton::common::TritonJson::ValueType::ARRAY);
if (assert_err == nullptr) {
RETURN_IF_ERR(JsonBytesArrayByteSize(el, byte_size));
} else {
// Serialized data size is the length of the string itself plus
// 4 bytes to record the string length.
const char* str;
size_t len = 0;
RETURN_MSG_IF_ERR(
el.AsString(&str, &len), "Unable to parse JSON bytes array");
*byte_size += len + sizeof(uint32_t);
}
TRITONSERVER_ErrorDelete(assert_err);
}
return nullptr; // success
}
TRITONSERVER_Error*
ReadDataFromJsonHelper(
char* base, const TRITONSERVER_DataType dtype,
triton::common::TritonJson::Value& tensor_data, int* counter,
int64_t expected_cnt)
{
// FIXME should invert loop and switch so don't have to do a switch
// each iteration.
for (size_t i = 0; i < tensor_data.ArraySize(); i++) {
triton::common::TritonJson::Value el;
RETURN_IF_ERR(tensor_data.At(i, &el));
// Recurse if not last dimension...
TRITONSERVER_Error* assert_err =
el.AssertType(triton::common::TritonJson::ValueType::ARRAY);
if (assert_err == nullptr) {
RETURN_IF_ERR(
ReadDataFromJsonHelper(base, dtype, el, counter, expected_cnt));
} else {
// Check if writing to 'serialized' is overrunning the expected byte_size
if (*counter >= expected_cnt) {
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INTERNAL,
"Shape does not match true shape of 'data' field");
}
switch (dtype) {
case TRITONSERVER_TYPE_BOOL: {
bool b = false;
RETURN_IF_ERR(el.AsBool(&b));
uint8_t* data_vec = reinterpret_cast<uint8_t*>(base);
// FIXME for unsigned should bounds check and raise error
// since otherwise the actually used value will be
// unexpected.
data_vec[*counter] = (uint8_t)(b ? 1 : 0);
*counter += 1;
break;
}
case TRITONSERVER_TYPE_UINT8: {
uint64_t ui = 0;
RETURN_IF_ERR(el.AsUInt(&ui));
uint8_t* data_vec = reinterpret_cast<uint8_t*>(base);
data_vec[*counter] = (uint8_t)ui;
*counter += 1;
break;
}
case TRITONSERVER_TYPE_UINT16: {
uint64_t ui = 0;
RETURN_IF_ERR(el.AsUInt(&ui));
uint16_t* data_vec = reinterpret_cast<uint16_t*>(base);
data_vec[*counter] = (uint16_t)ui;
*counter += 1;
break;
}
case TRITONSERVER_TYPE_UINT32: {
uint64_t ui = 0;
RETURN_IF_ERR(el.AsUInt(&ui));
uint32_t* data_vec = reinterpret_cast<uint32_t*>(base);
data_vec[*counter] = (uint32_t)ui;
*counter += 1;
break;
}
case TRITONSERVER_TYPE_UINT64: {
uint64_t ui = 0;
RETURN_IF_ERR(el.AsUInt(&ui));
uint64_t* data_vec = reinterpret_cast<uint64_t*>(base);
data_vec[*counter] = ui;
*counter += 1;
break;
}
case TRITONSERVER_TYPE_INT8: {
// FIXME for signed type just assigning to smaller type is
// "implementation defined" and so really need to bounds
// check.
int64_t si = 0;
RETURN_IF_ERR(el.AsInt(&si));
int8_t* data_vec = reinterpret_cast<int8_t*>(base);
data_vec[*counter] = (int8_t)si;
*counter += 1;
break;
}
case TRITONSERVER_TYPE_INT16: {
int64_t si = 0;
RETURN_IF_ERR(el.AsInt(&si));
int16_t* data_vec = reinterpret_cast<int16_t*>(base);
data_vec[*counter] = (int16_t)si;
*counter += 1;
break;
}
case TRITONSERVER_TYPE_INT32: {
int64_t si = 0;
RETURN_IF_ERR(el.AsInt(&si));
int32_t* data_vec = reinterpret_cast<int32_t*>(base);
data_vec[*counter] = (int32_t)si;
*counter += 1;
break;
}
case TRITONSERVER_TYPE_INT64: {
int64_t si = 0;
RETURN_IF_ERR(el.AsInt(&si));
int64_t* data_vec = reinterpret_cast<int64_t*>(base);
data_vec[*counter] = si;
*counter += 1;
break;
}
case TRITONSERVER_TYPE_FP32: {
double fp64 = 0;
RETURN_IF_ERR(el.AsDouble(&fp64));
float* data_vec = reinterpret_cast<float*>(base);
data_vec[*counter] = fp64;
*counter += 1;
break;
}
case TRITONSERVER_TYPE_FP64: {
double fp64 = 0;
RETURN_IF_ERR(el.AsDouble(&fp64));
double* data_vec = reinterpret_cast<double*>(base);
data_vec[*counter] = fp64;
*counter += 1;
break;
}
case TRITONSERVER_TYPE_BYTES: {
const char* cstr;
size_t len = 0;
RETURN_IF_ERR(el.AsString(&cstr, &len));
if (static_cast<int64_t>(*counter + len + sizeof(uint32_t)) >
expected_cnt) {
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INTERNAL,
"Shape does not match true shape of 'data' field");
}
memcpy(
base + *counter, reinterpret_cast<char*>(&len), sizeof(uint32_t));
std::copy(cstr, cstr + len, base + *counter + sizeof(uint32_t));
*counter += len + sizeof(uint32_t);
break;
}
default:
break;
}
}
TRITONSERVER_ErrorDelete(assert_err);
}
return nullptr; // success
}
TRITONSERVER_Error*
ReadDataFromJson(
const char* tensor_name, triton::common::TritonJson::Value& tensor_data,
char* base, const TRITONSERVER_DataType dtype, int64_t expected_cnt)
{
int counter = 0;
switch (dtype) {
// FP16 not supported via JSON
case TRITONSERVER_TYPE_FP16:
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INVALID_ARG,
std::string(
"receiving FP16 data via JSON is not supported. Please use the "
"binary data format for input " +
std::string(tensor_name))
.c_str());
case TRITONSERVER_TYPE_INVALID:
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INVALID_ARG,
std::string("invalid datatype for input " + std::string(tensor_name))
.c_str());
default:
RETURN_MSG_IF_ERR(
ReadDataFromJsonHelper(
base, dtype, tensor_data, &counter, expected_cnt),
"Unable to parse 'data'");
break;
}
// Check if 'ReadDataFromJsonHelper' reads less than the expected byte size
if (counter != expected_cnt) {
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INTERNAL,
"Unable to parse 'data': Shape does not match true shape of 'data' "
"field");
}
return nullptr;
}
TRITONSERVER_Error*
WriteDataToJsonCheck(
const std::string& output_name, const size_t byte_size,
const size_t expected_size)
{
if (byte_size != expected_size) {
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INTERNAL,
std::string(
"output tensor shape does not match size of output for '" +
output_name + "'")
.c_str());
}
return nullptr; // success
}
TRITONSERVER_Error*
WriteDataToJson(
triton::common::TritonJson::Value* data_json,
const std::string& output_name, const TRITONSERVER_DataType datatype,
const void* base, const size_t byte_size, const size_t element_count)
{
switch (datatype) {
case TRITONSERVER_TYPE_BOOL: {
const uint8_t* bool_base = reinterpret_cast<const uint8_t*>(base);
if (byte_size != (element_count * sizeof(uint8_t))) {
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INTERNAL,
std::string(
"output tensor shape does not match size of output for '" +
output_name + "'")
.c_str());
}
for (size_t e = 0; e < element_count; ++e) {
data_json->AppendBool((bool_base[e] == 0) ? false : true);
}
break;
}
case TRITONSERVER_TYPE_UINT8: {
RETURN_IF_ERR(WriteDataToJsonCheck(
output_name, byte_size, sizeof(uint8_t) * element_count));
const uint8_t* cbase = reinterpret_cast<const uint8_t*>(base);
for (size_t e = 0; e < element_count; ++e) {
data_json->AppendUInt(cbase[e]);
}
break;
}
case TRITONSERVER_TYPE_UINT16: {
RETURN_IF_ERR(WriteDataToJsonCheck(
output_name, byte_size, sizeof(uint16_t) * element_count));
const uint16_t* cbase = reinterpret_cast<const uint16_t*>(base);
for (size_t e = 0; e < element_count; ++e) {
data_json->AppendUInt(cbase[e]);
}
break;
}
case TRITONSERVER_TYPE_UINT32: {
RETURN_IF_ERR(WriteDataToJsonCheck(
output_name, byte_size, sizeof(uint32_t) * element_count));
const uint32_t* cbase = reinterpret_cast<const uint32_t*>(base);
for (size_t e = 0; e < element_count; ++e) {
data_json->AppendUInt(cbase[e]);
}
break;
}
case TRITONSERVER_TYPE_UINT64: {
RETURN_IF_ERR(WriteDataToJsonCheck(
output_name, byte_size, sizeof(uint64_t) * element_count));
const uint64_t* cbase = reinterpret_cast<const uint64_t*>(base);
for (size_t e = 0; e < element_count; ++e) {
data_json->AppendUInt(cbase[e]);
}
break;
}
case TRITONSERVER_TYPE_INT8: {
RETURN_IF_ERR(WriteDataToJsonCheck(
output_name, byte_size, sizeof(int8_t) * element_count));
const int8_t* cbase = reinterpret_cast<const int8_t*>(base);
for (size_t e = 0; e < element_count; ++e) {
data_json->AppendInt(cbase[e]);
}
break;
}
case TRITONSERVER_TYPE_INT16: {
RETURN_IF_ERR(WriteDataToJsonCheck(
output_name, byte_size, sizeof(int16_t) * element_count));
const int16_t* cbase = reinterpret_cast<const int16_t*>(base);
for (size_t e = 0; e < element_count; ++e) {
data_json->AppendInt(cbase[e]);
}
break;
}
case TRITONSERVER_TYPE_INT32: {
RETURN_IF_ERR(WriteDataToJsonCheck(
output_name, byte_size, sizeof(int32_t) * element_count));
const int32_t* cbase = reinterpret_cast<const int32_t*>(base);
for (size_t e = 0; e < element_count; ++e) {
data_json->AppendInt(cbase[e]);
}
break;
}
case TRITONSERVER_TYPE_INT64: {
RETURN_IF_ERR(WriteDataToJsonCheck(
output_name, byte_size, sizeof(int64_t) * element_count));
const int64_t* cbase = reinterpret_cast<const int64_t*>(base);
for (size_t e = 0; e < element_count; ++e) {
data_json->AppendInt(cbase[e]);
}
break;
}
// FP16 not supported via JSON
case TRITONSERVER_TYPE_FP16:
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INVALID_ARG,
"sending FP16 data via JSON is not supported. Please use the "
"binary data format for output");
case TRITONSERVER_TYPE_FP32: {
RETURN_IF_ERR(WriteDataToJsonCheck(
output_name, byte_size, sizeof(float) * element_count));
const float* cbase = reinterpret_cast<const float*>(base);
for (size_t e = 0; e < element_count; ++e) {
data_json->AppendDouble(cbase[e]);
}
break;
}
case TRITONSERVER_TYPE_FP64: {
RETURN_IF_ERR(WriteDataToJsonCheck(
output_name, byte_size, sizeof(double) * element_count));
const double* cbase = reinterpret_cast<const double*>(base);
for (size_t e = 0; e < element_count; ++e) {
data_json->AppendDouble(cbase[e]);
}
break;
}
case TRITONSERVER_TYPE_BYTES: {
const char* cbase = reinterpret_cast<const char*>(base);
size_t offset = 0;
for (size_t e = 0; e < element_count; ++e) {
if ((offset + sizeof(uint32_t)) > byte_size) {
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INTERNAL,
std::string(
"output tensor shape does not match size of output for '" +
output_name + "'")
.c_str());
}
const size_t len = *(reinterpret_cast<const uint32_t*>(cbase + offset));
offset += sizeof(uint32_t);
if ((offset + len) > byte_size) {
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INTERNAL,
std::string(
"output tensor shape does not match size of output for '" +
output_name + "'")
.c_str());
}
// Can use stringref because 'base' buffer is not deleted
// until response is deleted and that happens after this json
// is serialized.
data_json->AppendStringRef(cbase + offset, len);
offset += len;
}
break;
}
case TRITONSERVER_TYPE_INVALID:
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INVALID_ARG,
"Invalid data type for output tensor");
}
return nullptr; // success
}
void
EVBufferAddErrorJson(evbuffer* buffer, TRITONSERVER_Error* err)
{
const char* message = TRITONSERVER_ErrorMessage(err);
triton::common::TritonJson::Value response(
triton::common::TritonJson::ValueType::OBJECT);
response.AddStringRef("error", message, strlen(message));
triton::common::TritonJson::WriteBuffer buffer_json;
response.Write(&buffer_json);
evbuffer_add(buffer, buffer_json.Base(), buffer_json.Size());
}
TRITONSERVER_Error*
CheckBinaryInputData(
triton::common::TritonJson::Value& request_input, bool* is_binary,
size_t* byte_size)
{
*is_binary = false;
triton::common::TritonJson::Value params_json;
if (request_input.Find("parameters", ¶ms_json)) {
triton::common::TritonJson::Value binary_data_size_json;
if (params_json.Find("binary_data_size", &binary_data_size_json)) {
RETURN_MSG_IF_ERR(
binary_data_size_json.AsUInt(byte_size),
"Unable to parse 'binary_data_size'");
*is_binary = true;
}
}
return nullptr; // success
}
TRITONSERVER_Error*
CheckBinaryOutputData(
triton::common::TritonJson::Value& request_output, bool* is_binary)
{
*is_binary = false;
triton::common::TritonJson::Value params_json;
if (request_output.Find("parameters", ¶ms_json)) {
triton::common::TritonJson::Value binary_data_json;
if (params_json.Find("binary_data", &binary_data_json)) {
RETURN_MSG_IF_ERR(
binary_data_json.AsBool(is_binary), "Unable to parse 'binary_data'");
}
}
return nullptr; // success
}
TRITONSERVER_Error*
CheckSharedMemoryData(
triton::common::TritonJson::Value& request_input, bool* use_shm,
const char** shm_region, uint64_t* offset, uint64_t* byte_size)
{
*use_shm = false;
*offset = 0;
*byte_size = 0;
triton::common::TritonJson::Value params_json;
if (request_input.Find("parameters", ¶ms_json)) {
{
triton::common::TritonJson::Value region_json;
if (params_json.Find("shared_memory_region", ®ion_json)) {
*use_shm = true;
size_t len;
RETURN_MSG_IF_ERR(
region_json.AsString(shm_region, &len),
"Unable to parse 'shared_memory_region'");
}
}
{
triton::common::TritonJson::Value offset_json;
if (params_json.Find("shared_memory_offset", &offset_json)) {
RETURN_MSG_IF_ERR(
offset_json.AsUInt(offset),
"Unable to parse 'shared_memory_offset'");
}
}
{
triton::common::TritonJson::Value size_json;
if (params_json.Find("shared_memory_byte_size", &size_json)) {
RETURN_MSG_IF_ERR(
size_json.AsUInt(byte_size),
"Unable to parse 'shared_memory_byte_size'");
}
}
}
return nullptr; // success
}
TRITONSERVER_Error*
CheckClassificationOutput(
triton::common::TritonJson::Value& request_output, uint64_t* num_classes)
{
*num_classes = 0;
triton::common::TritonJson::Value params_json;
if (request_output.Find("parameters", ¶ms_json)) {
triton::common::TritonJson::Value cls_json;
if (params_json.Find("classification", &cls_json)) {
RETURN_MSG_IF_ERR(
cls_json.AsUInt(num_classes), "Unable to set 'classification'");
}
}
return nullptr; // success
}
TRITONSERVER_Error*
ValidateInputContentType(triton::common::TritonJson::Value& io)
{
bool has_data = false;
bool has_binary = false;
bool has_shared_memory = false;
has_data = io.Find("data");
triton::common::TritonJson::Value params_json;
if (io.Find("parameters", ¶ms_json)) {
has_binary = params_json.Find("binary_data_size");
has_shared_memory = params_json.Find("shared_memory_region");
}
int set_count = has_data + has_binary + has_shared_memory;
if (set_count != 1) {
std::string err_str =
"Input must set only one of the following fields: 'data', "
"'binary_data_size' in 'parameters', 'shared_memory_region' in "
"'parameters'. But";
if (set_count == 0) {
err_str += " no field is set";
} else {
err_str += " set";
if (has_data) {
err_str += " 'data'";
}
if (has_binary) {
err_str += " 'binary_data_size'";
}
if (has_shared_memory) {
err_str += " 'shared_memory_region'";
}
}
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INVALID_ARG, err_str.c_str());
}
return nullptr; // success
}
TRITONSERVER_Error*
ValidateOutputParameter(triton::common::TritonJson::Value& io)
{
triton::common::TritonJson::Value params_json;
if (io.Find("parameters", ¶ms_json)) {
const bool has_shared_memory = params_json.Find("shared_memory_region");
if (has_shared_memory) {
// Currently shared memory can't set with classification because
// cls results are not stored in shared memory, internally it is computed
// based on results in shared memory.
if (params_json.Find("classification")) {
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INVALID_ARG,
"Output can't set both 'shared_memory_region' and "
"'classification'");
}
triton::common::TritonJson::Value binary_data_json;
if (params_json.Find("binary_data", &binary_data_json)) {
bool is_binary = false;
RETURN_MSG_IF_ERR(
binary_data_json.AsBool(&is_binary), "Unable to set 'binary_data'");
if (is_binary) {
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INVALID_ARG,
"Output can't set both 'shared_memory_region' and 'binary_data'");
}
}
}
}
return nullptr; // success
}
TRITONSERVER_Error*
EVBufferToJson(
triton::common::TritonJson::Value* document, evbuffer_iovec* v, int* v_idx,
const size_t length, int n)
{
size_t offset = 0, remaining_length = length;
char* json_base;
std::vector<char> json_buffer;
// No need to memcpy when number of iovecs is 1
if ((n > 0) && (v[0].iov_len >= remaining_length)) {
json_base = static_cast<char*>(v[0].iov_base);
if (v[0].iov_len > remaining_length) {
v[0].iov_base = static_cast<void*>(json_base + remaining_length);
v[0].iov_len -= remaining_length;
remaining_length = 0;
} else if (v[0].iov_len == remaining_length) {
remaining_length = 0;
*v_idx += 1;
}
} else {
json_buffer.resize(length);
json_base = json_buffer.data();
while ((remaining_length > 0) && (*v_idx < n)) {
char* base = static_cast<char*>(v[*v_idx].iov_base);
size_t base_size;
if (v[*v_idx].iov_len > remaining_length) {
base_size = remaining_length;
v[*v_idx].iov_base = static_cast<void*>(base + remaining_length);
v[*v_idx].iov_len -= remaining_length;
remaining_length = 0;
} else {
base_size = v[*v_idx].iov_len;
remaining_length -= v[*v_idx].iov_len;
*v_idx += 1;
}
memcpy(json_base + offset, base, base_size);
offset += base_size;
}
}
if (remaining_length != 0) {
return TRITONSERVER_ErrorNew(
TRITONSERVER_ERROR_INVALID_ARG,
std::string(
"unexpected size for request JSON, expecting " +
std::to_string(remaining_length) + " more bytes")
.c_str());
}
RETURN_IF_ERR(document->Parse(json_base, length));
return nullptr; // success
}
std::string
CompressionTypeUsed(const std::string accept_encoding)
{
std::vector<std::string> encodings;
size_t offset = 0;
size_t delimeter_pos = accept_encoding.find(',');
while (delimeter_pos != std::string::npos) {
encodings.emplace_back(
accept_encoding.substr(offset, delimeter_pos - offset));
offset = delimeter_pos + 1;
delimeter_pos = accept_encoding.find(',', offset);
}
std::string res = "identity";
double weight = 0;
encodings.emplace_back(accept_encoding.substr(offset));
for (const auto& encoding : encodings) {
auto start_pos = encoding.find_first_not_of(' ');
auto weight_pos = encoding.find(";q=");
// Skip if the encoding is malformed
if ((start_pos == std::string::npos) ||
((weight_pos != std::string::npos) && (start_pos >= weight_pos))) {
continue;
}
const std::string type =
(weight_pos == std::string::npos)
? encoding.substr(start_pos)
: encoding.substr(start_pos, weight_pos - start_pos);
double type_weight = 1;
if (weight_pos != std::string::npos) {
try {
type_weight = std::stod(encoding.substr(weight_pos + 3));
}
catch (const std::invalid_argument& ia) {
continue;
}
}
if (((type == "identity") || (type == "deflate") || (type == "gzip")) &&
(type_weight > weight)) {
res = type;
weight = type_weight;
}
}
return res;
}
} // namespace
HTTPAPIServer::HTTPAPIServer(
const std::shared_ptr<TRITONSERVER_Server>& server,
nvidia::inferenceserver::TraceManager* trace_manager,
const std::shared_ptr<SharedMemoryManager>& shm_manager, const int32_t port,
const int thread_cnt)
: HTTPServer(port, thread_cnt), server_(server),
trace_manager_(trace_manager), shm_manager_(shm_manager),
allocator_(nullptr), server_regex_(R"(/v2(?:/health/(live|ready))?)"),
model_regex_(
R"(/v2/models/([^/]+)(?:/versions/([0-9]+))?(?:/(infer|ready|config|stats|trace/setting))?)"),
modelcontrol_regex_(
R"(/v2/repository(?:/([^/]+))?/(index|models/([^/]+)/(load|unload)))"),
systemsharedmemory_regex_(
R"(/v2/systemsharedmemory(?:/region/([^/]+))?/(status|register|unregister))"),
cudasharedmemory_regex_(
R"(/v2/cudasharedmemory(?:/region/([^/]+))?/(status|register|unregister))"),
trace_regex_(R"(/v2/trace/setting)")
{
// FIXME, don't cache server metadata. The http endpoint should
// not be deciding that server metadata will not change during
// execution.
TRITONSERVER_Message* message = nullptr;
server_metadata_err_ = TRITONSERVER_ServerMetadata(server_.get(), &message);
if (server_metadata_err_ == nullptr) {
const char* buffer;
size_t byte_size;
server_metadata_err_ =
TRITONSERVER_MessageSerializeToJson(message, &buffer, &byte_size);
server_metadata_ = std::string(buffer, byte_size);
}
if (message != nullptr) {
TRITONSERVER_MessageDelete(message);
}
FAIL_IF_ERR(
TRITONSERVER_ResponseAllocatorNew(
&allocator_, InferResponseAlloc, InferResponseFree,
nullptr /* start_fn */),
"creating response allocator");
FAIL_IF_ERR(
TRITONSERVER_ResponseAllocatorSetQueryFunction(
allocator_, OutputBufferQuery),
"setting allocator's query function");
}
HTTPAPIServer::~HTTPAPIServer()
{
if (server_metadata_err_ != nullptr) {
TRITONSERVER_ErrorDelete(server_metadata_err_);
}
LOG_TRITONSERVER_ERROR(
TRITONSERVER_ResponseAllocatorDelete(allocator_),
"deleting response allocator");
}