| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "services/data_decoder/public/cpp/safe_json_parser_impl.h" |
| |
| #include "base/callback.h" |
| #include "base/sequenced_task_runner.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/threading/sequenced_task_runner_handle.h" |
| #include "base/unguessable_token.h" |
| #include "base/values.h" |
| #include "services/data_decoder/public/mojom/constants.mojom.h" |
| #include "services/service_manager/public/cpp/connector.h" |
| #include "services/service_manager/public/mojom/constants.mojom.h" |
| |
| namespace data_decoder { |
| |
| SafeJsonParserImpl::SafeJsonParserImpl( |
| service_manager::Connector* connector, |
| const std::string& unsafe_json, |
| const SuccessCallback& success_callback, |
| const ErrorCallback& error_callback, |
| const base::Optional<std::string>& batch_id) |
| : unsafe_json_(unsafe_json), |
| success_callback_(success_callback), |
| error_callback_(error_callback) { |
| // If no batch ID has been provided, use a random instance ID to guarantee the |
| // connection is to a new service running in its own process. |
| service_manager::Identity identity( |
| mojom::kServiceName, service_manager::mojom::kInheritUserID, |
| batch_id.value_or(base::UnguessableToken::Create().ToString())); |
| connector->BindInterface(identity, &json_parser_ptr_); |
| } |
| |
| SafeJsonParserImpl::~SafeJsonParserImpl() = default; |
| |
| void SafeJsonParserImpl::Start() { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| |
| json_parser_ptr_.set_connection_error_handler(base::Bind( |
| &SafeJsonParserImpl::OnConnectionError, base::Unretained(this))); |
| json_parser_ptr_->Parse( |
| std::move(unsafe_json_), |
| base::Bind(&SafeJsonParserImpl::OnParseDone, base::Unretained(this))); |
| } |
| |
| void SafeJsonParserImpl::OnConnectionError() { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| |
| // Shut down the utility process. |
| json_parser_ptr_.reset(); |
| |
| ReportResults(nullptr, "Connection error with the json parser process."); |
| } |
| |
| void SafeJsonParserImpl::OnParseDone(base::Optional<base::Value> result, |
| const base::Optional<std::string>& error) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| |
| // Shut down the utility process. |
| json_parser_ptr_.reset(); |
| |
| std::unique_ptr<base::Value> result_ptr = |
| result ? base::Value::ToUniquePtrValue(std::move(result.value())) |
| : nullptr; |
| ReportResults(std::move(result_ptr), error.value_or("")); |
| } |
| |
| void SafeJsonParserImpl::ReportResults(std::unique_ptr<base::Value> parsed_json, |
| const std::string& error) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| if (error.empty() && parsed_json) { |
| if (!success_callback_.is_null()) |
| success_callback_.Run(std::move(parsed_json)); |
| } else { |
| if (!error_callback_.is_null()) |
| error_callback_.Run(error); |
| } |
| |
| // The parsing is done whether an error occured or not, so this instance can |
| // be cleaned up. |
| delete this; |
| } |
| |
| } // namespace data_decoder |