org.honton.chas.bom.QueryCentral Maven / Gradle / Ivy

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package org.honton.chas.bom;

import com.fasterxml.jackson.jr.ob.JSON;
import java.io.IOException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpClient.Redirect;
import java.net.http.HttpClient.Version;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import java.nio.file.Path;
import java.time.Duration;
import java.util.List;
import lombok.Data;
import org.apache.maven.model.Dependency;

public class QueryCentral {

  private final HttpClient client =
      HttpClient.newBuilder()
          .version(Version.HTTP_1_1)
          .followRedirects(Redirect.NORMAL)
          .connectTimeout(Duration.ofSeconds(20))
          .build();

  Dependency getDependency(Path jarPath, String sha1) throws IOException, InterruptedException {
    HttpRequest request =
        HttpRequest.newBuilder()
            .GET()
            .uri(URI.create("https://central.sonatype.com/solrsearch/select?q=1:" + sha1))
            .build();

    HttpResponse response = client.send(request, BodyHandlers.ofString());

    String body = response.body();
    CentralWrapper wrapper = JSON.std.beanFrom(CentralWrapper.class, body);
    List docs = wrapper.response.docs;
    return docs != null && !docs.isEmpty() ? bestMatch(jarPath, docs) : null;
  }

  private Dependency bestMatch(Path jarPath, List docs) {
    CentralDoc doc = docs.get(0);
    if (docs.size() > 1) {
      // multiple matches; try to narrow by version or artifactId
      String name = jarPath.getFileName().toString();
      int dot = name.lastIndexOf('.');
      int dash = name.lastIndexOf('-', dot);
      String version = name.substring(dash + 1, dot);
      String artifactId = dash > 0 ? name.substring(0, dash) : name;

      int bestMatch = -1;
      for (CentralDoc d : docs) {
        int matchMetric = 0;
        if (d.getA().equals(artifactId)) {
          ++matchMetric;
        }
        if (d.getV().equals(version)) {
          ++matchMetric;
        }
        if (bestMatch < matchMetric) {
          doc = d;
          bestMatch = matchMetric;
        }
      }
    }

    Dependency dependency = new Dependency();
    dependency.setGroupId(doc.g);
    dependency.setArtifactId(doc.a);
    dependency.setVersion(doc.v);
    return dependency;
  }

  @Data
  public static class CentralDoc {
    private String g;
    private String a;
    private String v;
  }

  @Data
  public static class CentralResponse {
    private List docs;
  }

  @Data
  public static class CentralWrapper {
    private CentralResponse response;
  }
}