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package eu.dnetlib.services.async;
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import java.util.HashMap;
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import java.util.Map;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.stereotype.Component;
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import org.springframework.web.client.RestTemplate;
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@Component
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public class AsyncClientUtils {
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private static final Log log = LogFactory.getLog(AsyncClientUtils.class);
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private static final Map<String, AsyncClientCallback> activeRemoteCalls = new HashMap<>();
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public void invokeRemoteMethod(final String remoteBaseUrl,
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final String remoteMethod,
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final String localBaseUrl,
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final Object o,
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final AsyncClientCallback callback) {
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final String url = remoteBaseUrl + "/async/method/" + remoteMethod + "?caller=" + localBaseUrl;
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log.info("invoking async method: " + url);
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final String id = (new RestTemplate()).postForObject(url, o, String.class);
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if (callback != null) {
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activeRemoteCalls.put(id, callback);
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}
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}
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public boolean processResponse(final String id, final AsyncResponse response) {
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if (activeRemoteCalls.containsKey(id)) {
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final AsyncClientCallback callback = activeRemoteCalls.get(id);
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callback.updateLastInvocation();
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switch (response.getStatus()) {
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case ASSIGNED:
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case RUNNING:
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callback.onGoing(response);
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break;
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case SUCCESS:
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callback.onDone(response);
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activeRemoteCalls.remove(id);
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break;
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case FAILED:
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callback.onFailed(response);
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activeRemoteCalls.remove(id);
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break;
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default:
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log.warn("Status " + response.getStatus() + " not managed");
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break;
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}
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return true;
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} else {
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log.warn("Unexpected message: " + id);
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return false;
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}
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}
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public void clearRemoteCalls() {
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activeRemoteCalls.clear();
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}
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public void deleteRemoteCall(final String id) {
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activeRemoteCalls.remove(id);
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}
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public static Map<String, AsyncClientCallback> getActiveremotecalls() {
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return activeRemoteCalls;
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}
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}
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