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				|  |  | -/*
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				|  |  | - *
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				|  |  | - * Copyright 2014, Google Inc.
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				|  |  | - * All rights reserved.
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				|  |  | - *
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				|  |  | - * Redistribution and use in source and binary forms, with or without
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				|  |  | - * modification, are permitted provided that the following conditions are
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				|  |  | - * met:
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				|  |  | - *
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				|  |  | - *     * Redistributions of source code must retain the above copyright
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				|  |  | - * notice, this list of conditions and the following disclaimer.
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				|  |  | - *     * Redistributions in binary form must reproduce the above
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				|  |  | - * copyright notice, this list of conditions and the following disclaimer
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				|  |  | - * in the documentation and/or other materials provided with the
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				|  |  | - * distribution.
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				|  |  | - *     * Neither the name of Google Inc. nor the names of its
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				|  |  | - * contributors may be used to endorse or promote products derived from
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				|  |  | - * this software without specific prior written permission.
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				|  |  | - *
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				|  |  | - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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				|  |  | - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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				|  |  | - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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				|  |  | - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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				|  |  | - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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				|  |  | - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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				|  |  | - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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				|  |  | - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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				|  |  | - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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				|  |  | - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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				|  |  | - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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				|  |  | - *
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				|  |  | - */
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				|  |  | -
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				|  |  | -#include <map>
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				|  |  | -#include <vector>
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				|  |  | -
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				|  |  | -#include <grpc/grpc.h>
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				|  |  | -#include <stdlib.h>
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				|  |  | -#include <node.h>
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				|  |  | -#include <nan.h>
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				|  |  | -#include "tag.h"
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				|  |  | -#include "call.h"
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				|  |  | -
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				|  |  | -namespace grpc {
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				|  |  | -namespace node {
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				|  |  | -
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				|  |  | -using v8::Boolean;
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				|  |  | -using v8::Function;
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				|  |  | -using v8::Handle;
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				|  |  | -using v8::HandleScope;
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				|  |  | -using v8::Persistent;
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				|  |  | -using v8::Value;
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				|  |  | -
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				|  |  | -Handle<Value> ParseMetadata(grpc_metadata_array *metadata_array) {
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				|  |  | -  NanEscapableScope();
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				|  |  | -  grpc_metadata *metadata_elements = metadata_array->metadata;
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				|  |  | -  size_t length = metadata_array->count;
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				|  |  | -  std::map<char*, size_t> size_map;
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				|  |  | -  std::map<char*, size_t> index_map;
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				|  |  | -
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				|  |  | -  for (unsigned int i = 0; i < length; i++) {
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				|  |  | -    char *key = metadata_elements[i].key;
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				|  |  | -    if (size_map.count(key)) {
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				|  |  | -      size_map[key] += 1;
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				|  |  | -    }
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				|  |  | -    index_map[key] = 0;
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				|  |  | -  }
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				|  |  | -  Handle<Object> metadata_object = NanNew<Object>();
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				|  |  | -  for (unsigned int i = 0; i < length; i++) {
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				|  |  | -    grpc_metadata* elem = &metadata_elements[i];
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				|  |  | -    Handle<String> key_string = String::New(elem->key);
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				|  |  | -    Handle<Array> array;
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				|  |  | -    if (metadata_object->Has(key_string)) {
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				|  |  | -      array = Handle<Array>::Cast(metadata_object->Get(key_string));
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				|  |  | -    } else {
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				|  |  | -      array = NanNew<Array>(size_map[elem->key]);
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				|  |  | -      metadata_object->Set(key_string, array);
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				|  |  | -    }
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				|  |  | -    array->Set(index_map[elem->key],
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				|  |  | -               MakeFastBuffer(
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				|  |  | -                   NanNewBufferHandle(elem->value, elem->value_length)));
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				|  |  | -    index_map[elem->key] += 1;
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				|  |  | -  }
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				|  |  | -  return NanEscapeScope(metadata_object);
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				|  |  | -}
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				|  |  | -
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				|  |  | -class OpResponse {
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				|  |  | - public:
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				|  |  | -  explicit OpResponse(char *name): name(name) {
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				|  |  | -  }
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				|  |  | -  virtual Handle<Value> GetNodeValue() const = 0;
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				|  |  | -  virtual bool ParseOp() = 0;
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				|  |  | -  Handle<Value> GetOpType() const {
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				|  |  | -    NanEscapableScope();
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				|  |  | -    return NanEscapeScope(NanNew(name));
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				|  |  | -  }
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				|  |  | -
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				|  |  | - private:
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				|  |  | -  char *name;
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				|  |  | -};
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				|  |  | -
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				|  |  | -class SendResponse : public OpResponse {
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				|  |  | - public:
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				|  |  | -  explicit SendResponse(char *name): OpResponse(name) {
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				|  |  | -  }
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				|  |  | -
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				|  |  | -  Handle<Value> GetNodeValue() {
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				|  |  | -    NanEscapableScope();
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				|  |  | -    return NanEscapeScope(NanTrue());
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				|  |  | -  }
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				|  |  | -}
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				|  |  | -
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				|  |  | -class MetadataResponse : public OpResponse {
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				|  |  | - public:
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				|  |  | -  explicit MetadataResponse(grpc_metadata_array *recv_metadata):
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				|  |  | -      recv_metadata(recv_metadata), OpResponse("metadata") {
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				|  |  | -  }
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				|  |  | -
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				|  |  | -  Handle<Value> GetNodeValue() const {
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				|  |  | -    NanEscapableScope();
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				|  |  | -    return NanEscapeScope(ParseMetadata(recv_metadata));
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				|  |  | -  }
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				|  |  | -
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				|  |  | - private:
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				|  |  | -  grpc_metadata_array *recv_metadata;
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				|  |  | -};
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				|  |  | -
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				|  |  | -class MessageResponse : public OpResponse {
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				|  |  | - public:
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				|  |  | -  explicit MessageResponse(grpc_byte_buffer **recv_message):
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				|  |  | -      recv_message(recv_message), OpResponse("read") {
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				|  |  | -  }
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				|  |  | -
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				|  |  | -  Handle<Value> GetNodeValue() const {
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				|  |  | -    NanEscapableScope();
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				|  |  | -    return NanEscapeScope(ByteBufferToBuffer(*recv_message));
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				|  |  | -  }
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				|  |  | -
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				|  |  | - private:
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				|  |  | -  grpc_byte_buffer **recv_message;
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				|  |  | -};
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				|  |  | -
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				|  |  | -switch () {
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				|  |  | -case GRPC_RECV_CLIENT_STATUS:
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				|  |  | -  op = new ClientStatusResponse;
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				|  |  | -  break;
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				|  |  | -}
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				|  |  | -
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				|  |  | -
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				|  |  | -class ClientStatusResponse : public OpResponse {
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				|  |  | - public:
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				|  |  | -  explicit ClientStatusResponse():
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				|  |  | -      OpResponse("status") {
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				|  |  | -  }
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				|  |  | -
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				|  |  | -  bool ParseOp(Handle<Value> obj, grpc_op *out) {
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				|  |  | -  }
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				|  |  | -
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				|  |  | -  Handle<Value> GetNodeValue() const {
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				|  |  | -    NanEscapableScope();
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				|  |  | -    Handle<Object> status_obj = NanNew<Object>();
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				|  |  | -    status_obj->Set(NanNew("code"), NanNew<Number>(*status));
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				|  |  | -    if (event->data.finished.details != NULL) {
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				|  |  | -      status_obj->Set(NanNew("details"), String::New(*status_details));
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				|  |  | -    }
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				|  |  | -    status_obj->Set(NanNew("metadata"), ParseMetadata(metadata_array));
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				|  |  | -    return NanEscapeScope(status_obj);
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				|  |  | -  }
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				|  |  | - private:
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				|  |  | -  grpc_metadata_array metadata_array;
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				|  |  | -  grpc_status_code status;
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				|  |  | -  char *status_details;
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				|  |  | -};
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				|  |  | -
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				|  |  | -class ServerCloseResponse : public OpResponse {
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				|  |  | - public:
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				|  |  | -  explicit ServerCloseResponse(int *cancelled): cancelled(cancelled),
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				|  |  | -                                                OpResponse("cancelled") {
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				|  |  | -  }
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				|  |  | -
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				|  |  | -  Handle<Value> GetNodeValue() const {
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				|  |  | -    NanEscapableScope();
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				|  |  | -    NanEscapeScope(NanNew<Boolean>(*cancelled));
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				|  |  | -  }
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				|  |  | -
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				|  |  | - private:
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				|  |  | -  int *cancelled;
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				|  |  | -};
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				|  |  | -
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				|  |  | -class NewCallResponse : public OpResponse {
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				|  |  | - public:
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				|  |  | -  explicit NewCallResponse(grpc_call **call, grpc_call_details *details,
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				|  |  | -                           grpc_metadata_array *request_metadata) :
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				|  |  | -      call(call), details(details), request_metadata(request_metadata),
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				|  |  | -      OpResponse("call"){
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				|  |  | -  }
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				|  |  | -
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				|  |  | -  Handle<Value> GetNodeValue() const {
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				|  |  | -    NanEscapableScope();
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				|  |  | -    if (*call == NULL) {
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				|  |  | -      return NanEscapeScope(NanNull());
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				|  |  | -    }
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				|  |  | -    Handle<Object> obj = NanNew<Object>();
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				|  |  | -    obj->Set(NanNew("call"), Call::WrapStruct(*call));
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				|  |  | -    obj->Set(NanNew("method"), NanNew(details->method));
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				|  |  | -    obj->Set(NanNew("host"), NanNew(details->host));
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				|  |  | -    obj->Set(NanNew("deadline"),
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				|  |  | -             NanNew<Date>(TimespecToMilliseconds(details->deadline)));
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				|  |  | -    obj->Set(NanNew("metadata"), ParseMetadata(request_metadata));
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				|  |  | -    return NanEscapeScope(obj);
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				|  |  | -  }
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				|  |  | - private:
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				|  |  | -  grpc_call **call;
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				|  |  | -  grpc_call_details *details;
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				|  |  | -  grpc_metadata_array *request_metadata;
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				|  |  | -}
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				|  |  | -
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				|  |  | -struct tag {
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				|  |  | -  tag(NanCallback *callback, std::vector<OpResponse*> *responses,
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				|  |  | -      std::vector<Persistent<Value>> *handles,
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				|  |  | -      std::vector<NanUtf8String *> *strings) :
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				|  |  | -      callback(callback), repsonses(responses), handles(handles),
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				|  |  | -      strings(strings){
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				|  |  | -  }
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				|  |  | -  ~tag() {
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				|  |  | -    for (std::vector<OpResponse *>::iterator it = responses->begin();
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				|  |  | -       it != responses->end(); ++it) {
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				|  |  | -      delete *it;
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				|  |  | -    }
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				|  |  | -    for (std::vector<NanUtf8String *>::iterator it = responses->begin();
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				|  |  | -       it != responses->end(); ++it) {
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				|  |  | -      delete *it;
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				|  |  | -    }
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				|  |  | -    delete callback;
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				|  |  | -    delete responses;
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				|  |  | -    delete handles;
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				|  |  | -    delete strings;
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				|  |  | -  }
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				|  |  | -  NanCallback *callback;
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				|  |  | -  std::vector<OpResponse*> *responses;
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				|  |  | -  std::vector<Persistent<Value>> *handles;
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				|  |  | -  std::vector<NanUtf8String *> *strings;
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				|  |  | -};
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				|  |  | -
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				|  |  | -void *CreateTag(Handle<Function> callback, grpc_op *ops, size_t nops,
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				|  |  | -                std::vector<Persistent<Value>> *handles,
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				|  |  | -                std::vector<NanUtf8String *> *strings) {
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				|  |  | -  NanScope();
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				|  |  | -  NanCallback *cb = new NanCallback(callback);
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				|  |  | -  vector<OpResponse*> *responses = new vector<OpResponse*>();
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				|  |  | -  for (size_t i = 0; i < nops; i++) {
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				|  |  | -    grpc_op *op = &ops[i];
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				|  |  | -    OpResponse *resp;
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				|  |  | -    // Switching on the TYPE of the op
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				|  |  | -    switch (op->op) {
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				|  |  | -      case GRPC_OP_SEND_INITIAL_METADATA:
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				|  |  | -        resp = new SendResponse("send metadata");
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				|  |  | -        break;
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				|  |  | -      case GRPC_OP_SEND_MESSAGE:
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				|  |  | -        resp = new SendResponse("write");
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				|  |  | -        break;
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				|  |  | -      case GRPC_OP_SEND_CLOSE_FROM_CLIENT:
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				|  |  | -        resp = new SendResponse("client close");
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				|  |  | -        break;
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				|  |  | -      case GRPC_OP_SEND_STATUS_FROM_SERVER:
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				|  |  | -        resp = new SendResponse("server close");
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				|  |  | -        break;
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				|  |  | -      case GRPC_OP_RECV_INITIAL_METADATA:
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				|  |  | -        resp = new MetadataResponse(op->data.recv_initial_metadata);
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				|  |  | -        break;
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				|  |  | -      case GRPC_OP_RECV_MESSAGE:
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				|  |  | -        resp = new MessageResponse(op->data.recv_message);
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				|  |  | -        break;
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				|  |  | -      case GRPC_OP_RECV_STATUS_ON_CLIENT:
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				|  |  | -        resp = new ClientStatusResponse(
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				|  |  | -            op->data.recv_status_on_client.trailing_metadata,
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				|  |  | -            op->data.recv_status_on_client.status,
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				|  |  | -            op->data.recv_status_on_client.status_details);
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				|  |  | -        break;
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				|  |  | -      case GRPC_RECV_CLOSE_ON_SERVER:
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				|  |  | -        resp = new ServerCloseResponse(op->data.recv_close_on_server.cancelled);
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				|  |  | -        break;
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				|  |  | -      default:
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				|  |  | -        continue;
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				|  |  | -    }
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				|  |  | -    responses->push_back(resp);
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				|  |  | -  }
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				|  |  | -  struct tag *tag_struct = new struct tag(cb, responses, handles, strings);
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				|  |  | -  return reinterpret_cast<void *>(tag_struct);
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				|  |  | -}
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				|  |  | -
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				|  |  | -void *CreateTag(Handle<Function> callback, grpc_call **call,
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				|  |  | -                grpc_call_details *details,
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				|  |  | -                grpc_metadata_array *request_metadata) {
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				|  |  | -  NanEscapableScope();
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				|  |  | -  NanCallback *cb = new NanCallback(callback);
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				|  |  | -  vector<OpResponse*> *responses = new vector<OpResponse*>();
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				|  |  | -  OpResponse *resp = new NewCallResponse(call, details, request_metadata);
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				|  |  | -  responses->push_back(resp);
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				|  |  | -  struct tag *tag_struct = new struct tag(cb, responses);
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				|  |  | -  return reinterpret_cast<void *>(tag_struct);
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				|  |  | -}
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				|  |  | -
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				|  |  | -NanCallback GetTagCallback(void *tag) {
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				|  |  | -  NanEscapableScope();
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				|  |  | -  struct tag *tag_struct = reinterpret_cast<struct tag *>(tag);
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				|  |  | -  return NanEscapeScope(*tag_struct->callback);
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				|  |  | -}
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				|  |  | -
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				|  |  | -Handle<Value> GetNodeValue(void *tag) {
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				|  |  | -  NanEscapableScope();
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				|  |  | -  struct tag *tag_struct = reinterpret_cast<struct tag *>(tag);
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				|  |  | -  Handle<Object> obj = NanNew<Object>();
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				|  |  | -  for (std::vector<OpResponse *>::iterator it = tag_struct->responses->begin();
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				|  |  | -       it != tag_struct->responses->end(); ++it) {
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				|  |  | -    OpResponse *resp = *it;
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				|  |  | -    obj->Set(resp->GetOpType(), resp->GetNodeValue());
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				|  |  | -  }
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				|  |  | -  return NanEscapeScope(obj);
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				|  |  | -}
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				|  |  | -
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				|  |  | -void DestroyTag(void *tag) { delete reinterpret_cast<struct tag *>(tag); }
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				|  |  | -
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				|  |  | -}  // namespace node
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				|  |  | -}  // namespace grpc
 |