forked from D-Net/dnet-hadoop
84 lines
2.6 KiB
Java
84 lines
2.6 KiB
Java
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package eu.dnetlib.dhp.api;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import org.jetbrains.annotations.NotNull;
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/**
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* @author miriam.baglioni
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* @Date 06/10/23
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*/
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public class QueryCommunityAPI {
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private static final String PRODUCTION_BASE_URL = "https://services.openaire.eu/openaire/";
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private static final String BETA_BASE_URL = "https://beta.services.openaire.eu/openaire/";
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private static String get(String geturl) throws IOException {
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URL url = new URL(geturl);
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HttpURLConnection conn = (HttpURLConnection) url.openConnection();
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conn.setDoOutput(true);
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conn.setRequestMethod("GET");
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int responseCode = conn.getResponseCode();
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String body = getBody(conn);
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conn.disconnect();
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if (responseCode != HttpURLConnection.HTTP_OK)
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throw new IOException("Unexpected code " + responseCode + body);
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return body;
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}
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public static String communities(boolean production) throws IOException {
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if (production)
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return get(PRODUCTION_BASE_URL + "community/communities");
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return get(BETA_BASE_URL + "community/communities");
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}
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public static String community(String id, boolean production) throws IOException {
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if (production)
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return get(PRODUCTION_BASE_URL + "community/" + id);
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return get(BETA_BASE_URL + "community/" + id);
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}
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public static String communityDatasource(String id, boolean production) throws IOException {
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if (production)
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return get(PRODUCTION_BASE_URL + "community/" + id + "/contentproviders");
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return (BETA_BASE_URL + "community/" + id + "/contentproviders");
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}
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public static String communityPropagationOrganization(String id, boolean production) throws IOException {
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if (production)
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return get(PRODUCTION_BASE_URL + "community/" + id + "/propagationOrganizations");
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return get(BETA_BASE_URL + "community/" + id + "/propagationOrganizations");
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}
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public static String communityProjects(String id, String page, String size, boolean production) throws IOException {
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if (production)
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return get(PRODUCTION_BASE_URL + "community/" + id + "/projects/" + page + "/" + size);
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return get(BETA_BASE_URL + "community/" + id + "/projects/" + page + "/" + size);
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}
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@NotNull
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private static String getBody(HttpURLConnection conn) throws IOException {
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String body = "{}";
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try (BufferedReader br = new BufferedReader(
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new InputStreamReader(conn.getInputStream(), "utf-8"))) {
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StringBuilder response = new StringBuilder();
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String responseLine = null;
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while ((responseLine = br.readLine()) != null) {
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response.append(responseLine.trim());
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}
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body = response.toString();
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}
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return body;
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}
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}
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