DefaultEtherHttpClient.java

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package dev.rafex.ether.http.client.impl;
 
/*-
 * #%L
 * ether-http-client
 * %%
 * Copyright (C) 2025 - 2026 Raúl Eduardo González Argote
 * %%
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * #L%
 */
 
import java.io.IOException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.util.List;
import java.util.Map;
 
import com.fasterxml.jackson.core.type.TypeReference;
 
import dev.rafex.ether.http.client.EtherHttpClient;
import dev.rafex.ether.http.client.config.HttpClientConfig;
import dev.rafex.ether.http.client.model.HttpMethod;
import dev.rafex.ether.http.client.model.HttpRequestSpec;
import dev.rafex.ether.http.client.model.HttpResponseSpec;
import dev.rafex.ether.json.JsonCodec;
import dev.rafex.ether.json.JsonUtils;
 
public final class DefaultEtherHttpClient implements EtherHttpClient {
 
    private final HttpClient httpClient;
    private final HttpClientConfig config;
    private final JsonCodec jsonCodec;
 
    public DefaultEtherHttpClient(final HttpClientConfig config) {
        this(config, JsonUtils.codec());
    }
 
    public DefaultEtherHttpClient(final HttpClientConfig config, final JsonCodec jsonCodec) {
        this.config = config == null ? HttpClientConfig.defaults() : config;
        this.jsonCodec = jsonCodec == null ? JsonUtils.codec() : jsonCodec;
        this.httpClient = HttpClient.newBuilder().connectTimeout(this.config.connectTimeout())
                .followRedirects(this.config.redirectPolicy()).build();
    }
 
    public static DefaultEtherHttpClient create() {
        return new DefaultEtherHttpClient(HttpClientConfig.defaults());
    }
 
    public static DefaultEtherHttpClient create(final HttpClientConfig config) {
        return new DefaultEtherHttpClient(config);
    }
 
    public static DefaultEtherHttpClient create(final JsonCodec jsonCodec) {
        return new DefaultEtherHttpClient(HttpClientConfig.defaults(), jsonCodec);
    }
 
    @Override
    public HttpResponseSpec send(final HttpRequestSpec request) throws IOException, InterruptedException {
        final var response = httpClient.send(buildRequest(request), HttpResponse.BodyHandlers.ofByteArray());
        return new HttpResponseSpec(response.statusCode(), response.headers().map(), response.body());
    }
 
    @Override
    public <T> T sendJson(final HttpRequestSpec request, final TypeReference<T> typeReference)
            throws IOException, InterruptedException {
        final var response = send(request);
        return jsonCodec.readValue(response.body(), typeReference);
    }
 
    @Override
    public <T> T sendJson(final HttpRequestSpec request, final Class<T> type) throws IOException, InterruptedException {
        final var response = send(request);
        return jsonCodec.readValue(response.body(), type);
    }
 
    public <T> T sendJson(final HttpMethod method, final URI uri, final Object body, final Class<T> responseType)
            throws IOException, InterruptedException {
        return sendJson(HttpRequestSpec.builder(method, uri).jsonBody(body, jsonCodec).build(), responseType);
    }
 
    public <T> T sendJson(final HttpMethod method, final URI uri, final Object body,
            final TypeReference<T> responseType) throws IOException, InterruptedException {
        return sendJson(HttpRequestSpec.builder(method, uri).jsonBody(body, jsonCodec).build(), responseType);
    }
 
    public HttpResponseSpec sendText(final HttpMethod method, final URI uri, final String body)
            throws IOException, InterruptedException {
        return send(HttpRequestSpec.builder(method, uri).body(body).contentType("text/plain; charset=utf-8").build());
    }
 
    private HttpRequest buildRequest(final HttpRequestSpec request) {
        final var builder = HttpRequest.newBuilder(request.uri())
                .method(request.method().verb(), requestBodyPublisher(request))
                .timeout(request.timeout() != null ? request.timeout() : config.requestTimeout());
 
        applyHeaders(builder, config.defaultHeaders());
        applyHeaders(builder, request.headers());
        if (config.userAgent() != null && !config.userAgent().isBlank()) {
            builder.header("User-Agent", config.userAgent());
        }
        return builder.build();
    }
 
    private static void applyHeaders(final HttpRequest.Builder builder, final Map<String, List<String>> headers) {
        for (final var entry : headers.entrySet()) {
            for (final var value : entry.getValue()) {
                builder.header(entry.getKey(), value);
            }
        }
    }
 
    private static HttpRequest.BodyPublisher requestBodyPublisher(final HttpRequestSpec request) {
        final var body = request.body();
        if (body == null || body.length == 0) {
            return HttpRequest.BodyPublishers.noBody();
        }
        return HttpRequest.BodyPublishers.ofByteArray(body);
    }
}