113 lines
4.1 KiB
Java
113 lines
4.1 KiB
Java
package org.gcube.event.publisher;
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import java.io.BufferedReader;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.URL;
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import org.gcube.oidc.rest.JWTToken;
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import org.gcube.oidc.rest.OpenIdConnectRESTHelper;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class HTTPEventSender implements EventSender {
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protected static final Logger log = LoggerFactory.getLogger(HTTPEventSender.class);
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private URL endpoint;
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private String clientId;
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private String clientSecret;
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private URL tokenURL;
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public HTTPEventSender(URL endpointURL, String clientId, String clientSecret, URL tokenURL) {
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this.endpoint = endpointURL;
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this.clientId = clientId;
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this.clientSecret = clientSecret;
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this.tokenURL = tokenURL;
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}
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@Override
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public void send(Event event) {
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if (log.isDebugEnabled()) {
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log.debug("Starting HTTP POST thread to: " + endpoint);
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}
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try {
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URL eventEndpoint = new URL(endpoint, event.getName());
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new Thread(new HTTPost(eventEndpoint, event.toJSONString())).start();
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} catch (MalformedURLException e) {
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log.error("Cannot compute event endpoint URL. Event name: " + event.getName() + ", base endpoint: "
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+ endpoint, e);
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}
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}
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public class HTTPost implements Runnable {
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private URL endpoint;
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private String jsonString;
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public HTTPost(URL endpoint, String jsonString) {
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this.jsonString = jsonString;
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}
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@Override
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public void run() {
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try {
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if (log.isDebugEnabled()) {
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log.debug("Getting token for client: " + clientId);
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}
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JWTToken token = OpenIdConnectRESTHelper.queryClientToken(clientId, clientSecret, tokenURL);
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if (log.isTraceEnabled()) {
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log.trace("Performing HTTP POST");
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}
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HttpURLConnection con = (HttpURLConnection) endpoint.openConnection();
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con.setDoOutput(true);
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con.setDoInput(true);
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con.setRequestProperty("Content-Type", "application/json");
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con.setRequestProperty("Accept", "application/json");
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con.setRequestProperty("Method", "POST");
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con.setRequestProperty("Authorization", token.getAsBearer());
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OutputStream os = con.getOutputStream();
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if (log.isTraceEnabled()) {
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log.trace("Sending event JSON");
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}
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os.write(jsonString.getBytes("UTF-8"));
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os.close();
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StringBuilder sb = new StringBuilder();
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int httpResultCode = con.getResponseCode();
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if (log.isTraceEnabled()) {
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log.trace("HTTP Response code: " + httpResultCode);
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}
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if (log.isTraceEnabled()) {
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log.trace("Reading response");
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}
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boolean ok = true;
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InputStreamReader isr = null;
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if (httpResultCode == HttpURLConnection.HTTP_OK) {
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isr = new InputStreamReader(con.getInputStream(), "UTF-8");
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} else {
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ok = false;
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isr = new InputStreamReader(con.getErrorStream(), "UTF-8");
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}
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BufferedReader br = new BufferedReader(isr);
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String line = null;
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while ((line = br.readLine()) != null) {
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sb.append(line + "\n");
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}
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br.close();
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if (ok) {
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if (log.isDebugEnabled()) {
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log.debug("Event publish OK. Results: " + sb.toString());
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}
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} else {
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log.error("Event publish KO. Results: " + sb.toString());
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}
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} catch (Exception e) {
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log.error("POSTing JSON to: " + endpoint, e);
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}
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}
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}
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} |