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/*
* ============LICENSE_START=======================================================
* Copyright (C) 2024 Nordix Foundation.
* ================================================================================
* 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_END=========================================================
*/
package org.onap.cps.ncmp.api.impl.config;
import io.netty.channel.ChannelOption;
import io.netty.handler.timeout.ReadTimeoutHandler;
import io.netty.handler.timeout.WriteTimeoutHandler;
import java.util.concurrent.TimeUnit;
import lombok.RequiredArgsConstructor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.http.client.reactive.ReactorClientHttpConnector;
import org.springframework.web.reactive.function.client.WebClient;
import reactor.netty.http.client.HttpClient;
import reactor.netty.resources.ConnectionProvider;
/**
* Configures and creates a WebClient bean that triggers an initialization (warmup) of the host name resolver and
* loads the necessary native libraries to avoid the extra time needed to load resources for first request.
*/
@Configuration
@RequiredArgsConstructor
public class DmiWebClientConfiguration {
private final HttpClientConfiguration httpClientConfiguration;
/**
* Configures and create a WebClient bean for DMI data service.
*
* @return a WebClient instance for data services.
*/
@Bean
public WebClient dataServicesWebClient() {
final HttpClientConfiguration.DataServices httpClientConfiguration
= this.httpClientConfiguration.getDataServices();
final HttpClient httpClient = createHttpClient("dataConnectionPool",
httpClientConfiguration.getMaximumConnectionsTotal(),
httpClientConfiguration.getConnectionTimeoutInSeconds(),
httpClientConfiguration.getReadTimeoutInSeconds(),
httpClientConfiguration.getWriteTimeoutInSeconds());
return buildAndGetWebClient(httpClient, httpClientConfiguration.getMaximumInMemorySizeInMegabytes());
}
/**
* Configures and creates a WebClient bean for DMI model service.
*
* @return a WebClient instance for model services.
*/
@Bean
public WebClient modelServicesWebClient() {
final HttpClientConfiguration.ModelServices httpClientConfiguration
= this.httpClientConfiguration.getModelServices();
final HttpClient httpClient = createHttpClient("modelConnectionPool",
httpClientConfiguration.getMaximumConnectionsTotal(),
httpClientConfiguration.getConnectionTimeoutInSeconds(),
httpClientConfiguration.getReadTimeoutInSeconds(),
httpClientConfiguration.getWriteTimeoutInSeconds());
return buildAndGetWebClient(httpClient, httpClientConfiguration.getMaximumInMemorySizeInMegabytes());
}
/**
* Configures and creates a WebClient bean for DMI health service.
*
* @return a WebClient instance for health checks.
*/
@Bean
public WebClient healthChecksWebClient() {
final HttpClientConfiguration.HealthCheckServices httpClientConfiguration
= this.httpClientConfiguration.getHealthCheckServices();
final HttpClient httpClient = createHttpClient("healthConnectionPool",
httpClientConfiguration.getMaximumConnectionsTotal(),
httpClientConfiguration.getConnectionTimeoutInSeconds(),
httpClientConfiguration.getReadTimeoutInSeconds(),
httpClientConfiguration.getWriteTimeoutInSeconds());
return buildAndGetWebClient(httpClient, httpClientConfiguration.getMaximumInMemorySizeInMegabytes());
}
private static HttpClient createHttpClient(final String connectionProviderName,
final Integer maximumConnectionsTotal,
final Integer connectionTimeoutInSeconds,
final Integer readTimeoutInSeconds,
final Integer writeTimeoutInSeconds) {
final ConnectionProvider dmiWebClientConnectionProvider = ConnectionProvider.create(connectionProviderName,
maximumConnectionsTotal);
final HttpClient httpClient = HttpClient.create(dmiWebClientConnectionProvider)
.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, connectionTimeoutInSeconds * 1000)
.doOnConnected(connection -> connection.addHandlerLast(new ReadTimeoutHandler(readTimeoutInSeconds,
TimeUnit.SECONDS)).addHandlerLast(new WriteTimeoutHandler(writeTimeoutInSeconds,
TimeUnit.SECONDS)));
httpClient.warmup().block();
return httpClient;
}
private static WebClient buildAndGetWebClient(final HttpClient httpClient,
final Integer maximumInMemorySizeInMegabytes) {
return WebClient.builder()
.defaultHeaders(header -> header.set(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE))
.defaultHeaders(header -> header.set(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON_VALUE))
.clientConnector(new ReactorClientHttpConnector(httpClient))
.codecs(configurer -> configurer.defaultCodecs().maxInMemorySize(
maximumInMemorySizeInMegabytes * 1024 * 1024)).build();
}
}
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