109 lines
4.1 KiB
Java
109 lines
4.1 KiB
Java
package eu.openaire.urls_worker.controllers;
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import eu.openaire.urls_worker.components.AssignmentsHandler;
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import eu.openaire.urls_worker.util.UriBuilder;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.ResponseEntity;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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import javax.servlet.http.HttpServletRequest;
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@RestController
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@RequestMapping("")
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public class GeneralController {
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private static final Logger logger = LoggerFactory.getLogger(GeneralController.class);
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private final String controllerIp;
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public GeneralController(@Value("${info.controllerIp}") String controllerIp) {
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this.controllerIp = controllerIp;
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}
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@GetMapping("isAlive")
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public ResponseEntity<?> isWorkerAlive() {
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logger.info("Received an \"isAlive\" request.");
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return ResponseEntity.ok().build();
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}
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public static boolean shouldShutdownWorker = false;
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@GetMapping("shutdownWorker")
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public ResponseEntity<?> shutdownWorkerGracefully(HttpServletRequest request)
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{
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String initMsg = "Received a \"shutdownWorker\" request.";
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ResponseEntity<?> responseEntity = passSecurityChecks(request, initMsg);
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if ( responseEntity != null )
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return responseEntity;
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String finalMsg = "";
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if ( shouldShutdownWorker )
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finalMsg = " The worker has already received a \"shutdownWorker\" (which was not canceled afterwards).";
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else
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shouldShutdownWorker = true;
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finalMsg += " The worker will shutdown, after finishing current work.";
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logger.info(initMsg + finalMsg);
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return ResponseEntity.ok().body(finalMsg + "\n");
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}
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@GetMapping("cancelShutdownWorker")
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public ResponseEntity<?> cancelShutdownWorkerGracefully(HttpServletRequest request)
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{
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String initMsg = "Received a \"cancelShutdownWorker\" request.";
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ResponseEntity<?> responseEntity = passSecurityChecks(request, initMsg);
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if ( responseEntity != null )
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return responseEntity;
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shouldShutdownWorker = false;
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String finalMsg = " Any previous \"shutdownWorker\"-request is canceled. The \"maxAssignmentsBatchesToHandleBeforeShutdown\" will still be honored (if it's set).";
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logger.info(initMsg + finalMsg);
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return ResponseEntity.ok().body(finalMsg + "\n");
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}
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@GetMapping("getHandledAssignmentsCounts")
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public ResponseEntity<?> getHandledAssignmentsCounts()
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{
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return ResponseEntity.ok(AssignmentsHandler.assignmentsNumsHandled);
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}
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public ResponseEntity<?> passSecurityChecks(HttpServletRequest request, String initMsg)
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{
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if ( request == null ) {
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logger.error(initMsg + " The \"HttpServletRequest\" is null!");
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return ResponseEntity.internalServerError().build();
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}
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String remoteAddr = request.getHeader("X-FORWARDED-FOR");
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if ( remoteAddr == null || "".equals(remoteAddr) )
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remoteAddr = request.getRemoteAddr();
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if ( ! (remoteAddr.equals("127.0.0.1") || remoteAddr.equals(UriBuilder.ip) || remoteAddr.equals(controllerIp)) ) {
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logger.error(initMsg + " The request came from another IP: " + remoteAddr + " | while this worker has the IP: " + UriBuilder.ip);
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return ResponseEntity.status(HttpStatus.FORBIDDEN).build();
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}
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// TODO - If the Controller's ip is actually a domain name, then we have to calculate its IP-address one time
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// Ad a regex to check that the controller's "IP" contains only numbers and dots, if not, then we have a DOMAIN.
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// So use the following code to get the number-IP address:
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/*
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String address = java.net.InetAddress.getByName(controllerIp).getHostAddress();
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// TOdo - checks for potential "null" or exceptions in the above code, in case the domain resolution failed
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* */
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return null; // The checks are passing.
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}
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}
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