6189230202
Summary: Closes https://github.com/facebook/rocksdb/pull/2589 Differential Revision: D5431502 Pulled By: siying fbshipit-source-id: 8ebf8c87883daa9daa54b2303d11ce01ab1f6f75
121 lines
3.2 KiB
C++
121 lines
3.2 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#ifndef ROCKSDB_LITE
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#include <assert.h>
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#include <limits>
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#include <stdint.h>
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#include "rocksdb/utilities/json_document.h"
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#include "third-party/fbson/FbsonWriter.h"
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namespace rocksdb {
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JSONDocumentBuilder::JSONDocumentBuilder()
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: writer_(new fbson::FbsonWriter()) {
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}
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JSONDocumentBuilder::JSONDocumentBuilder(fbson::FbsonOutStream* out)
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: writer_(new fbson::FbsonWriter(*out)) {
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}
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void JSONDocumentBuilder::Reset() {
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writer_->reset();
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}
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bool JSONDocumentBuilder::WriteStartArray() {
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return writer_->writeStartArray();
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}
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bool JSONDocumentBuilder::WriteEndArray() {
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return writer_->writeEndArray();
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}
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bool JSONDocumentBuilder::WriteStartObject() {
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return writer_->writeStartObject();
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}
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bool JSONDocumentBuilder::WriteEndObject() {
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return writer_->writeEndObject();
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}
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bool JSONDocumentBuilder::WriteKeyValue(const std::string& key,
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const JSONDocument& value) {
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assert(key.size() <= std::numeric_limits<uint8_t>::max());
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size_t bytesWritten = writer_->writeKey(key.c_str(),
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static_cast<uint8_t>(key.size()));
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if (bytesWritten == 0) {
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return false;
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}
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return WriteJSONDocument(value);
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}
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bool JSONDocumentBuilder::WriteJSONDocument(const JSONDocument& value) {
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switch (value.type()) {
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case JSONDocument::kNull:
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return writer_->writeNull() != 0;
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case JSONDocument::kInt64:
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return writer_->writeInt64(value.GetInt64());
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case JSONDocument::kDouble:
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return writer_->writeDouble(value.GetDouble());
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case JSONDocument::kBool:
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return writer_->writeBool(value.GetBool());
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case JSONDocument::kString:
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{
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bool res = writer_->writeStartString();
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if (!res) {
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return false;
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}
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const std::string& str = value.GetString();
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res = writer_->writeString(str.c_str(),
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static_cast<uint32_t>(str.size()));
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if (!res) {
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return false;
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}
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return writer_->writeEndString();
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}
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case JSONDocument::kArray:
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{
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bool res = WriteStartArray();
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if (!res) {
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return false;
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}
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for (size_t i = 0; i < value.Count(); ++i) {
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res = WriteJSONDocument(value[i]);
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if (!res) {
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return false;
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}
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}
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return WriteEndArray();
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}
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case JSONDocument::kObject:
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{
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bool res = WriteStartObject();
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if (!res) {
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return false;
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}
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for (auto keyValue : value.Items()) {
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WriteKeyValue(keyValue.first, keyValue.second);
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}
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return WriteEndObject();
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}
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default:
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assert(false);
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}
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return false;
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}
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JSONDocument JSONDocumentBuilder::GetJSONDocument() {
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fbson::FbsonValue* value =
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fbson::FbsonDocument::createValue(writer_->getOutput()->getBuffer(),
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static_cast<uint32_t>(writer_->getOutput()->getSize()));
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return JSONDocument(value, true);
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}
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JSONDocumentBuilder::~JSONDocumentBuilder() {
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}
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} // namespace rocksdb
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#endif // ROCKSDB_LITE
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