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85 lines
2.9 KiB
Java
85 lines
2.9 KiB
Java
package eu.openaire.urls_controller.util;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.core.env.Environment;
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import java.io.BufferedReader;
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import java.io.InputStreamReader;
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import java.net.InetAddress;
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import java.net.MalformedURLException;
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import java.net.URL;
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public class UriBuilder {
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private static final Logger logger = LoggerFactory.getLogger(UriBuilder.class);
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public static String baseUrl = null;
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public UriBuilder(Environment environment)
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{
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baseUrl = "http";
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String sslEnabled = environment.getProperty("server.ssl.enabled");
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if (sslEnabled == null) { // It's expected to not exist if there is no SSL-configuration.
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logger.warn("No property \"server.ssl.enabled\" was found in \"application.properties\". Continuing with plain HTTP..");
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sslEnabled = "false";
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}
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baseUrl += sslEnabled.equals("true") ? "s" : "";
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baseUrl += "://";
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String hostName = getPublicIP();
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if ( hostName == null )
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hostName = InetAddress.getLoopbackAddress().getHostName(); // Non-null.
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baseUrl += hostName;
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String serverPort = environment.getProperty("server.port");
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if (serverPort == null) { // This is unacceptable!
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logger.error("No property \"server.port\" was found in \"application.properties\"!");
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System.exit(-1); // Well, I guess the Spring Boot would not start in this case anyway.
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}
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baseUrl += ":" + serverPort;
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String baseInternalPath = environment.getProperty("server.servlet.context-path");
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if ( baseInternalPath != null ) {
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if ( !baseInternalPath.startsWith("/") )
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baseUrl += "/";
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baseUrl += baseInternalPath;
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if ( !baseInternalPath.endsWith("/") )
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baseUrl += "/";
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} else {
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logger.warn("No property \"server.servlet.context-path\" was found in \"application.properties\"!"); // Yes it's expected.
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baseUrl += "/";
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}
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logger.debug("ServerBaseURL: " + baseUrl);
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}
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private static String getPublicIP()
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{
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String publicIpAddress = "";
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URL url_name;
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try {
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url_name = new URL("https://api.ipify.org/");
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} catch (MalformedURLException mue) {
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logger.warn(mue.getMessage());
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return null;
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}
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try (BufferedReader bf = new BufferedReader(new InputStreamReader(url_name.openStream()))) {
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publicIpAddress = bf.readLine().trim();
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} catch (Exception e) {
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logger.warn("Cannot get the publicIP address for this machine!", e);
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return null;
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}
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return publicIpAddress;
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}
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public static String getBaseUrl() {
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return baseUrl;
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}
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public static void setBaseUrl(String baseUrl) {
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UriBuilder.baseUrl = baseUrl;
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}
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} |