here-data-sdk-cpp/examples/WriteExample.cpp at master · minff/here-data-sdk-cpp · GitHub

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* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

* SPDX-License-Identifier: Apache-2.0

* License-Filename: LICENSE

#include "WriteExample.h"

#include <olp/authentication/TokenProvider.h>

#include <olp/core/client/HRN.h>

#include <olp/core/client/OlpClientSettings.h>

#include <olp/core/client/OlpClientSettingsFactory.h>

#include <olp/core/logging/Log.h>

#include <olp/dataservice/write/StreamLayerClient.h>

#include <olp/dataservice/write/model/PublishDataRequest.h>

#include <fstream>

#include <iostream>

using namespace olp::dataservice::write;

using namespace olp::dataservice::write::model;

namespace {

const std::string kData("hello world"); // data to write

constexpr auto kLogTag = "write-example";

constexpr size_t kPublishRequestsSize = 5u;

} // namespace

int RunExampleWrite(const AccessKey& access_key, const std::string& catalog,

const std::string& layer_id) {

auto buffer = std::make_shared<std::vector<unsigned char>>(std::begin(kData),

std::end(kData));

// Create a task scheduler instance

std::shared_ptr<olp::thread::TaskScheduler> task_scheduler =

olp::client::OlpClientSettingsFactory::CreateDefaultTaskScheduler(1u);

// Create a network client

std::shared_ptr<olp::http::Network> http_client = olp::client::

OlpClientSettingsFactory::CreateDefaultNetworkRequestHandler();

// Initialize authentication settings

olp::authentication::Settings settings({access_key.id, access_key.secret});

settings.task_scheduler = std::move(task_scheduler);

settings.network_request_handler = http_client;

// Setup AuthenticationSettings with a default token provider that will

// retrieve an OAuth 2.0 token from OLP.

olp::client::AuthenticationSettings auth_settings;

auth_settings.provider =

olp::authentication::TokenProviderDefault(std::move(settings));

// Setup OlpClientSettings and provide it to the StreamLayerClient.

olp::client::OlpClientSettings client_settings;

client_settings.authentication_settings = auth_settings;

client_settings.network_request_handler = std::move(http_client);

auto stream_client_settings = StreamLayerClientSettings{};

auto client = std::make_shared<StreamLayerClient>(

olp::client::HRN{catalog}, std::move(stream_client_settings),

std::move(client_settings));

// Create a publish data request

auto request = PublishDataRequest().WithData(buffer).WithLayerId(layer_id);

// Single publish to stream layer

{

// Write data to OLP Stream Layer using StreamLayerClient

auto future_response = client->PublishData(request);

// Wait for response

auto response = future_response.GetFuture().get();

// Check the response

if (!response.IsSuccessful()) {

OLP_SDK_LOG_ERROR_F(kLogTag,

"Error writing data - HTTP Status: %d Message: %s",

response.GetError().GetHttpStatusCode(),

response.GetError().GetMessage().c_str());

return -1;

}

OLP_SDK_LOG_INFO_F(kLogTag, "Publish Successful - TraceID: %s",

response.GetResult().GetTraceID().c_str());

}

// Multi-publish to stream layer

{

// Queue publish requests to be uploaded on Flush

for (size_t idx = 0; idx < kPublishRequestsSize; ++idx) {

auto status = client->Queue(request);

if (status) {

OLP_SDK_LOG_ERROR_F(kLogTag, "Queue failed - %s", status->c_str());

return -1;

}

// Flush and wait for uploading

auto flush_request = FlushRequest();

auto future_response = client->Flush(std::move(flush_request));

auto responses = future_response.GetFuture().get();

if (responses.empty()) {

OLP_SDK_LOG_ERROR_F(kLogTag, "Error on Flush()");

return -1;

}

// Check all publishes succeeded

for (auto response : responses) {

if (!response.IsSuccessful()) {

OLP_SDK_LOG_ERROR_F(kLogTag,

"Error flushing data - HTTP Status: %d Message: %s",

response.GetError().GetHttpStatusCode(),

response.GetError().GetMessage().c_str());

return -1;

}

OLP_SDK_LOG_INFO_F(kLogTag, "Flush Successful - TraceID: %s",

response.GetResult().GetTraceID().c_str());

}

return 0;

}

here-data-sdk-cpp/examples/WriteExample.cpp at master · minff/here-data-sdk-cpp · GitHub

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