- Allow to easily change the por used by workers.

- Show the number of active background-tasks and bulkImportDirs, which delay the Service's shutdown.
- Update dependencies.
- Code polishing.

build.gradle

@@ -52,7 +52,7 @@ dependencies {
     implementation("org.apache.commons:commons-compress:1.25.0") {
         exclude group: 'com.github.luben', module: 'zstd-jni'
     }
-    implementation 'com.github.luben:zstd-jni:1.5.5-10'  // Even though this is part of the above dependency, the Apache commons rarely updates it, while the zstd team makes improvements very often.
+    implementation 'com.github.luben:zstd-jni:1.5.5-11'  // Even though this is part of the above dependency, the Apache commons rarely updates it, while the zstd team makes improvements very often.
 
     implementation 'io.minio:minio:8.5.7'
 
@@ -120,7 +120,7 @@ dependencies {
 
 
     // https://mvnrepository.com/artifact/io.micrometer/micrometer-registry-prometheus
-    runtimeOnly 'io.micrometer:micrometer-registry-prometheus:1.12.0'
+    runtimeOnly 'io.micrometer:micrometer-registry-prometheus:1.12.1'
 
     testImplementation 'org.springframework.security:spring-security-test'
     testImplementation "org.springframework.boot:spring-boot-starter-test"

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

installAndRun.sh

@@ -26,7 +26,7 @@ if [[ justRun -eq 1 && shouldRunInDocker -eq 1 ]]; then
   justRun=0
 fi
 
-gradleVersion="8.4"
+gradleVersion="8.5"
 
 if [[ justRun -eq 0 ]]; then
 

src/main/java/eu/openaire/urls_controller/UrlsControllerApplication.java

@@ -60,6 +60,7 @@ public class UrlsControllerApplication {
 
     public void gentleAppShutdown()
     {
+        logger.info("Shutting down the app..");
         shutdownThreads();
         int exitCode = 0;
         try {

src/main/java/eu/openaire/urls_controller/components/ScheduledTasks.java

@@ -129,7 +129,7 @@ public class ScheduledTasks {
                 logger.error("IOOBE for background task_" + i + " in the futures-list! " + ioobe.getMessage());
                 // Only here, the "future" will be null.
             } finally {
-                if ( future != null )
+                if ( future != null )   // It may be null in case we have a IOBE.
                     futuresToDelete.add(future);    // Do not delete them directly here, as the indexes will get messed up and we will get "IOOBE".
             }
         }
@@ -152,8 +152,11 @@ public class ScheduledTasks {
             return; // Either the service was never instructed to shut down, or the user canceled the request.
 
         // Check whether there are still background tasks to be processed. Either workerReport or Bulk-import requests.
-        if ( UrlsController.futuresOfBackgroundTasks.size() > 0 )
+        int numOfFutures = UrlsController.futuresOfBackgroundTasks.size();
+        if ( numOfFutures > 0 ) {
+            logger.debug("There are still " + numOfFutures + " backgroundTasks waiting to be executed or have their status checked..");
             return;
+        }
 
         // Here, the above may have given a result of < 0 >, but a new task may be asked for execution right next and still await for execution..
         // The crawling-jobs can be safely finish, by avoiding to shut-down as long as at least one worker is still running (waiting for the Controller to verify that the assignments-batch is completed).
@@ -161,8 +164,11 @@ public class ScheduledTasks {
         // So the Controller will now shut down if either of takes-types have not finished.
 
         // Check whether there are any active bulk-import procedures.
-        if ( BulkImportController.bulkImportDirsUnderProcessing.size() > 0 )
+        int numOfBulkImportDirsUnderProcessing = BulkImportController.bulkImportDirsUnderProcessing.size();
+        if ( numOfBulkImportDirsUnderProcessing > 0 ) {
+            logger.debug("There are still " + numOfBulkImportDirsUnderProcessing + " bulkImportDirsUnderProcessing..");
             return;
+        }
 
         // Check whether the workers have not shutdown yet, which means that they either crawl assignments or/and they are waiting for the Controller to process the WorkerReport and then shutdown.
         Set<String> workerIds = UrlsController.workersInfoMap.keySet();
@@ -249,7 +255,7 @@ public class ScheduledTasks {
         // The assignments just remain in the table, and the urls cannot be rechecked.
 
         Calendar calendar = Calendar.getInstance();
-        calendar.add(Calendar.DAY_OF_MONTH, - 3);  // Subtract <daysToWaitBeforeDeletion> from current Date.
+        calendar.add(Calendar.DAY_OF_MONTH, - 3);  // Subtract 3 from current Date.
 
         DatabaseConnector.databaseLock.lock();
         urlsService.deleteAssignmentsWithOlderDate(calendar.getTimeInMillis()); // Any error-log is written inside.

src/main/java/eu/openaire/urls_controller/controllers/UrlsController.java

@@ -96,7 +96,7 @@ public class UrlsController {
 
         if ( ShutdownController.shouldShutdownService ) {
             // There might be the case that the Controller has not sent shutDown requests to the Workers yet, or it has, BUT:
-            // 1) A worker requests for new assignments before the shutDown request is handled by its side.
+            // 1) A worker requests for new assignments, before it can handle the shutDown request given to it.
             // 2) A new Worker joins the Service (unexpected, but anyway).
             String warnMsg = "The Service is about to shutdown, after all under-processing assignments and/or bulkImport requests are handled. No new requests are accepted!";
             logger.warn(warnMsg);  // It's likely not an actual error, but still it's not accepted.

src/main/java/eu/openaire/urls_controller/services/ShutdownServiceImpl.java

@@ -5,6 +5,7 @@ import eu.openaire.urls_controller.models.WorkerInfo;
 import eu.openaire.urls_controller.util.UriBuilder;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Service;
@@ -25,6 +26,10 @@ public class ShutdownServiceImpl implements ShutdownService {
     private static final Pattern PRIVATE_IP_ADDRESSES_RFC_1918 = Pattern.compile("(?:10.|172.(?:1[6-9]|2[0-9]|3[0-1])|192.168.)[0-9.]+");
 
 
+    @Value("${services.pdfaggregation.worker.port}")
+    private String workerPort;
+
+
     public ResponseEntity<?> passSecurityChecks(String remoteAddr, String initMsg)
     {
         //  In case the Controller is running inside a docker container, and we want to send the "shutdownServiceRequest" from the terminal (with curl), without entering inside the container,
@@ -54,7 +59,7 @@ public class ShutdownServiceImpl implements ShutdownService {
 
     public boolean postShutdownOrCancelRequestToWorker(String workerId, String workerIp, boolean shouldCancel)
     {
-        String url = "http://" + workerIp + ":1881/api/" + (shouldCancel ? "cancelShutdownWorker" : "shutdownWorker");
+        String url = "http://" + workerIp + ":" + workerPort + "/api/" + (shouldCancel ? "cancelShutdownWorker" : "shutdownWorker");
         try {
             ResponseEntity<?> responseEntity = restTemplate.postForEntity(url, null, String.class);
             int responseCode = responseEntity.getStatusCodeValue();

src/main/java/eu/openaire/urls_controller/services/StatsServiceImpl.java

@@ -93,6 +93,7 @@ public class StatsServiceImpl implements StatsService {
         }
     }
 
+
     // To get the human-friendly timestamp format from the BigInt in the database:
     // select from_timestamp(CAST(CAST(`date` as decimal(30,0))/1000 AS timestamp), "yyyy-MM-dd HH:mm:ss.SSS") from payload
     // Or simpler: select from_timestamp(CAST((`date`/1000) AS timestamp), "yyyy-MM-dd HH:mm:ss.SSS") from payload

src/main/java/eu/openaire/urls_controller/services/UrlsServiceImpl.java

@@ -58,6 +58,9 @@ public class UrlsServiceImpl implements UrlsService {
     @Value("${services.pdfaggregation.controller.workerReportsDirPath}")
     private String workerReportsDirPath;
 
+    @Value("${services.pdfaggregation.worker.port}")
+    private String workerPort;
+
     public static final AtomicLong assignmentsBatchCounter = new AtomicLong(0);
 
     private final AtomicInteger maxAttemptsPerRecordAtomic;
@@ -534,7 +537,7 @@ public class UrlsServiceImpl implements UrlsService {
             logger.error("Could not find any info for worker with id: \"" + workerId +"\".");
             return false;
         }
-        String url = "http://" + workerInfo.getWorkerIP() + ":1881/api/addReportResultToWorker/" + assignmentRequestCounter;    // This workerIP will NOT be null.
+        String url = "http://" + workerInfo.getWorkerIP() + ":" + workerPort + "/api/addReportResultToWorker/" + assignmentRequestCounter;    // This workerIP will NOT be null.
 
         if ( logger.isTraceEnabled() )
             logger.trace("Going to \"postReportResultToWorker\": \"" + workerId + "\", for assignments_" + assignmentRequestCounter + ((errorMsg != null) ? "\nError: " + errorMsg : ""));

src/main/java/eu/openaire/urls_controller/util/FileUtils.java

@@ -61,6 +61,10 @@ public class FileUtils {
     @Autowired
     private FileDecompressor fileDecompressor;
 
+    @Value("${services.pdfaggregation.worker.port}")
+    private String workerPort;
+
+
 
     public enum UploadFullTextsResponse {successful, unsuccessful, databaseError}
 
@@ -326,7 +330,7 @@ public class FileUtils {
             logger.debug("The assignments_" + assignmentsBatchCounter + " have " + numAllFullTexts + " distinct non-already-uploaded fullTexts (total is: " + numFullTextsFound.get() + "). Going to request them from the Worker \"" + workerId + "\", in " + numOfBatches + " batches (" + numOfFullTextsPerBatch + " files each).");
 
         // Check if one full text is left out because of the division. Put it int the last batch.
-        String baseUrl = "http://" + workerIp + ":1881/api/full-texts/getFullTexts/" + assignmentsBatchCounter + "/" + numOfBatches + "/";
+        String baseUrl = "http://" + workerIp + ":" + workerPort + "/api/full-texts/getFullTexts/" + assignmentsBatchCounter + "/" + numOfBatches + "/";
 
         // TODO - The worker should send the port in which it accepts requests, along with the current request.
         // TODO - The least we have to do it to expose the port-assignment somewhere more obvious like inside the "application.yml" file.

src/main/resources/application.yml

@@ -34,7 +34,8 @@ services:
                 bucketName: XA
                 shouldEmptyBucket: false
                 shouldShowAllS3Buckets: true
-
+        worker:
+            port: 1881
 
 bulk-import:
     baseBulkImportLocation: /mnt/bulk_import/