57 lines
1.5 KiB
Java
57 lines
1.5 KiB
Java
package org.gcube.portlets.user.geoportaldataviewer.server.util;
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import java.util.ArrayList;
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import java.util.List;
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import javax.servlet.http.HttpServletRequest;
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import org.gcube.portlets.user.geoportaldataviewer.shared.faults.ControlledError;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public abstract class ContextRequest<T> {
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private static final Logger LOG = LoggerFactory.getLogger(ContextRequest.class);
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private static List<Runnable> preoperations = new ArrayList<>();
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public static void addPreoperation(Runnable preoperation) {
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preoperations.add(preoperation);
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}
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protected HttpServletRequest request;
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private T result = null;
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public ContextRequest(HttpServletRequest httpRequest) {
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this.request = httpRequest;
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}
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public ContextRequest<T> execute() throws Exception, ControlledError {
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try {
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if (!preoperations.isEmpty()) {
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LOG.trace("Running preops (size : {} )", preoperations.size());
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for (Runnable r : preoperations)
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r.run();
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}
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LOG.debug("Context is " + SessionUtil.getCurrentContext(request, true));
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LOG.debug("Context is " + SessionUtil.getCurrentToken(request, true) == null ? null : "***");
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LOG.trace("Executing actual method..");
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result = run();
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return this;
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} catch (ControlledError e) {
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throw e;
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} catch (Throwable t) {
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LOG.error("Unexpected error ", t);
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throw new Exception("Unexpected error contacting the infrastructure", t);
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}
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}
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public T getResult() {
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return result;
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}
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protected abstract T run() throws Exception, ControlledError;
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}
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