- Add support for more than one full-text per id. Allow recognizing fileName additions: "id(1).pdf", "id(2).pdf", etc.

- Fix not giving the databaseName in the "ImpalaController.get10PublicationIdsTest()".
- Improve consistency in the "maxAttemptsPerRecord" value, among different threads. Also, reduce the value-increase by one.
- Check if the tableName string is empty, in the "mergeParquetFiles".
- Improve error-logging.
- Set some local variables to "final", optimizing code-execution by the JVM.

src/main/java/eu/openaire/urls_controller/configuration/ImpalaConnector.java

@@ -78,7 +78,7 @@ public class ImpalaConnector {
 
 
     public static String handleQueryException(String queryName, String query, Exception e) {
-        String errorMsg = "Problem when creating " + (( ! queryName.startsWith("get")) ? "and executing " : "") + "the prepared statement for \"" + queryName + "\"!\n";
+        String errorMsg = "Problem when executing the query \"" + queryName + "\"!\n";
         logger.error(errorMsg  + "\n\n" + query + "\n\n", e);
         return errorMsg;
     }

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

@@ -3,6 +3,7 @@ package eu.openaire.urls_controller.controllers;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.jdbc.core.JdbcTemplate;
@@ -23,10 +24,13 @@ public class ImpalaController {
     @Autowired
     private JdbcTemplate jdbcTemplate;
 
+    @Value("${services.pdfaggregation.controller.db.databaseName}")
+    private String databaseName;
+
     @GetMapping("get10PublicationIdsTest")
     public ResponseEntity<?> get10PublicationIdsTest() {
 
-        String query = "SELECT id FROM publication LIMIT 10;";
+        String query = "SELECT id FROM " + databaseName + ".publication LIMIT 10;";
 
         try {
             List<String> publications = jdbcTemplate.queryForList(query, String.class);
@@ -38,4 +42,5 @@ public class ImpalaController {
             return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(errorMsg);
         }
     }
+
 }

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

@@ -42,15 +42,19 @@ public class UrlController {
     private static final AtomicLong assignmentsBatchCounter = new AtomicLong(0);
     private static final Pattern MALICIOUS_INPUT_STRING = Pattern.compile(".*[';`\"]+.*");
 
-    @Value("${services.pdfaggregation.controller.maxAttemptsPerRecord}")
-    private int maxAttemptsPerRecord;
-
     @Value("${services.pdfaggregation.controller.assignmentLimit}")
     private int assignmentLimit;
 
     @Value("${services.pdfaggregation.controller.db.databaseName}")
     private String databaseName;
 
+    private AtomicInteger maxAttemptsPerRecordAtomic;
+
+
+    public UrlController(@Value("${services.pdfaggregation.controller.maxAttemptsPerRecord}") int maxAttemptsPerRecord) {
+        maxAttemptsPerRecordAtomic = new AtomicInteger(maxAttemptsPerRecord);
+    }
+
 
     @GetMapping("")
     public ResponseEntity<?> getUrls(@RequestParam String workerId, @RequestParam int workerAssignmentsLimit) {
@@ -88,12 +92,13 @@ public class UrlController {
                 "  select a.id, a.original_url from " + databaseName + ".assignment a\n" +
                 "  union all\n" +
                 "  select pl.id, pl.original_url from " + databaseName + ".payload pl) as existing on existing.id=p.id and existing.original_url=pu.url\n" +
-                "where d.allow_harvest=true and existing.id is null and coalesce(attempts.counts, 0) <= " + maxAttemptsPerRecord + " and not exists (select 1 from " + databaseName + ".attempt a where a.id=p.id and a.error_class = 'noRetry' limit 1)\n" +
+                "where d.allow_harvest=true and existing.id is null and coalesce(attempts.counts, 0) <= " + maxAttemptsPerRecordAtomic.get() + " and not exists (select 1 from " + databaseName + ".attempt a where a.id=p.id and a.error_class = 'noRetry' limit 1)\n" +
                 "limit " + (assignmentsLimit * 10) + ") as non_distinct_results\n" +
                 "order by coalesce(attempt_count, 0), reverse(pubid), url\n" +
                 "limit " + assignmentsLimit + ") as findAssignmentsQuery";
 
         // The "order by" in the end makes sure the older attempted records will be re-attempted after a long time.
+        //logger.debug(findAssignmentsQuery); // DEBUG!
 
         String createCurrentAssignmentsQuery = "create table " + databaseName + ".current_assignment as \n" + findAssignmentsQuery;
         String computeCurrentAssignmentsStatsQuery = "COMPUTE STATS " + databaseName + ".current_assignment";
@@ -113,14 +118,12 @@ public class UrlController {
 
         try {
             jdbcTemplate.execute(computeCurrentAssignmentsStatsQuery);
-        } catch (Exception sqle) {
+        } catch (Exception e) {
-            String errorMsg = dropCurrentAssignmentTable();
+            String errorMsg = ImpalaConnector.handleQueryException("computeCurrentAssignmentsStatsQuery", computeCurrentAssignmentsStatsQuery, e);
+            String tmpErrMsg = dropCurrentAssignmentTable();
+            if ( tmpErrMsg != null )
+                errorMsg += "\n" + tmpErrMsg;
             ImpalaConnector.databaseLock.unlock();
-
-            if ( errorMsg != null )
-                return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(errorMsg);
-
-            errorMsg = ImpalaConnector.handleQueryException("computeCurrentAssignmentsStatsQuery", computeCurrentAssignmentsStatsQuery, sqle);
             return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(errorMsg);
         }
 
@@ -144,32 +147,25 @@ public class UrlController {
                 assignments.add(assignment);
             });
         } catch (Exception e) {
-            String errorMsg = dropCurrentAssignmentTable();
+            String errorMsg = ImpalaConnector.handleQueryException("getAssignmentsQuery", getAssignmentsQuery, e);
+            String tmpErrMsg = dropCurrentAssignmentTable();
+            if ( tmpErrMsg != null )
+                errorMsg += "\n" + tmpErrMsg;
             ImpalaConnector.databaseLock.unlock();
-
-            if ( errorMsg != null )
-                return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(errorMsg);
-
-            errorMsg = "Problem when executing the \"getAssignmentsQuery\"!\n";
-            logger.error(errorMsg, e);
             return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(errorMsg);
         }
 
         int assignmentsSize = assignments.size();
         if ( assignmentsSize == 0 ) {
-            String errorMsg = dropCurrentAssignmentTable();
+            String errorMsg = "No results retrieved from the \"findAssignmentsQuery\" for worker with id: " + workerId + ". Will increase the \"maxAttempts\" to " + maxAttemptsPerRecordAtomic.incrementAndGet() + " for the next requests.";
-            ImpalaConnector.databaseLock.unlock();
-
-            if ( errorMsg != null )
-                return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(errorMsg);
-
-            maxAttemptsPerRecord += 2;  // Increase the max-attempts to try again some very old records, in the next requests.
-            errorMsg = "No results retrieved from the \"findAssignmentsQuery\" for worker with id: " + workerId + ". Will increase the \"maxAttempts\" to " + maxAttemptsPerRecord + " for the next requests.";
             logger.error(errorMsg);
-            return ResponseEntity.status(HttpStatus.NO_CONTENT).body(errorMsg);
+            String tmpErrMsg = dropCurrentAssignmentTable();
+            if ( tmpErrMsg != null )
+                errorMsg += "\n" + tmpErrMsg;
+            ImpalaConnector.databaseLock.unlock();
+            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(errorMsg);
         } else if ( assignmentsSize < assignmentsLimit ) {
-            maxAttemptsPerRecord += 2;  // Increase the max-attempts to try again some very old records, in the next requests.
+            logger.warn("The retrieved results were fewer (" + assignmentsSize + ") than the \"assignmentsLimit\" (" + assignmentsLimit + "), for worker with id: " + workerId + ". Will increase the \"maxAttempts\" to " + maxAttemptsPerRecordAtomic.incrementAndGet() + " for the next requests.");
-            logger.warn("The retrieved results were fewer (" + assignmentsSize + ") than the \"assignmentsLimit\" (" + assignmentsLimit + "), for worker with id: " + workerId + ". Will increase the \"maxAttempts\" to " + maxAttemptsPerRecord + " for the next requests.");
         }
 
         logger.debug("Finished gathering " + assignmentsSize + " assignments for worker with id \"" + workerId + "\". Going to insert them into the \"assignment\" table and then return them to the worker.");
@@ -183,14 +179,12 @@ public class UrlController {
 
         try {
             jdbcTemplate.execute(insertAssignmentsQuery);
-        } catch (Exception sqle) {
+        } catch (Exception e) {
-            String errorMsg = dropCurrentAssignmentTable();
+            String errorMsg = ImpalaConnector.handleQueryException("insertAssignmentsQuery", insertAssignmentsQuery, e);
+            String tmpErrMsg = dropCurrentAssignmentTable();
+            if ( tmpErrMsg != null )
+                errorMsg += "\n" + tmpErrMsg;
             ImpalaConnector.databaseLock.unlock();
-
-            if ( errorMsg != null )
-                return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(errorMsg);
-
-            errorMsg = ImpalaConnector.handleQueryException("insertAssignmentsQuery", insertAssignmentsQuery, sqle);
             return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(errorMsg);
         }
 
@@ -263,11 +257,11 @@ public class UrlController {
         }
 
         // Store the workerReport into the database. We use "PreparedStatements" to do insertions, for security and valid SQL syntax reasons.
-        String insertIntoPayloadBaseQuery = "INSERT INTO " + databaseName + ".payload (id, original_url, actual_url, date, mimetype, size, hash, location, provenance) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)";
+        final String insertIntoPayloadBaseQuery = "INSERT INTO " + databaseName + ".payload (id, original_url, actual_url, date, mimetype, size, hash, location, provenance) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)";
-        int[] payloadArgTypes = new int[] {Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.TIMESTAMP, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR};
+        final int[] payloadArgTypes = new int[] {Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.TIMESTAMP, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR};
 
-        String insertIntoAttemptBaseQuery = "INSERT INTO " + databaseName + ".attempt (id, original_url, date, status, error_class, error_message) VALUES (?, ?, ?, ?, ?, ?)";
+        final String insertIntoAttemptBaseQuery = "INSERT INTO " + databaseName + ".attempt (id, original_url, date, status, error_class, error_message) VALUES (?, ?, ?, ?, ?, ?)";
-        int[] attemptArgTypes = new int[] {Types.VARCHAR, Types.VARCHAR, Types.TIMESTAMP, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR};
+        final int[] attemptArgTypes = new int[] {Types.VARCHAR, Types.VARCHAR, Types.TIMESTAMP, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR};
 
         final AtomicInteger failedCount = new AtomicInteger(0);
 

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

@@ -56,7 +56,7 @@ public class FileUtils {
      * */
     public String mergeParquetFiles(String tableName, String whereClause, String parameter) {
         String errorMsg;
-        if ( tableName == null ) {
+        if ( (tableName == null) || tableName.isEmpty() ) {
             errorMsg = "No tableName was given. Do not know the tableName for which we should merger the underlying files for!";
             logger.error(errorMsg);
             return errorMsg;
@@ -86,8 +86,9 @@ public class FileUtils {
     }
 
 
-    private final Pattern FILENAME_ID = Pattern.compile("([\\w_:]+)\\.[\\w]{2,10}$");
+    private final String numAndExtension = "(?:\\([\\d]+\\))?\\.[\\w]{2,10}";
-    private final Pattern FILENAME_WITH_EXTENSION = Pattern.compile(".*/([\\w_:]+\\.[\\w]{2,10})$");
+    private final Pattern FILENAME_ID = Pattern.compile("([\\w_:]+)" + numAndExtension + "$");
+    private final Pattern FILENAME_WITH_EXTENSION = Pattern.compile(".*/([\\w_:]+" + numAndExtension + ")$");
 
     @Value("services.pdfaggregation.controller.baseTargetLocation")
     private String baseTargetLocation;
@@ -157,7 +158,7 @@ public class FileUtils {
             fileLocation = payload.getLocation();
             if ( fileLocation != null ) {   // If the docFile was downloaded (without an error)..
                 Matcher matcher = FILENAME_WITH_EXTENSION.matcher(fileLocation);
-                if ( !matcher.matches() ) {
+                if ( ! matcher.matches() ) {
                     continue;
                 }
                 String fileNameWithExtension = matcher.group(1);
@@ -263,7 +264,7 @@ public class FileUtils {
 
                     try {
                         String s3Url = s3ObjectStore.uploadToS3(fileName, fileFullPath);
-                        setFullTextForMultipleIDs(fileRelatedIDs, payloadsHashMultimap, s3Url);
+                        setFullTextForMultipleIDs(fileRelatedIDs, payloadsHashMultimap, s3Url, fileName);
                         numUploadedFiles ++;
                     } catch (Exception e) {
                         logger.error("Could not upload the file \"" + fileName + "\" to the S3 ObjectStore, exception: " + e.getMessage(), e);
@@ -354,7 +355,6 @@ public class FileUtils {
 
     private String getRequestUrlForBatch(String baseUrl, List<String> fileNamesForCurBatch) {
         final StringBuilder sb = new StringBuilder(numOfFullTextsPerBatch * 50);
-
         sb.append(baseUrl);
         int numFullTextsCurBatch = fileNamesForCurBatch.size();
         for ( int j=0; j < numFullTextsCurBatch; ++j ){
@@ -426,7 +426,7 @@ public class FileUtils {
                 return false;   // It's not problematic.
         }
 
-        logger.error("None of the locations of the payloads matched with the ID \"" + fileID + "\" are ending with the filename \"" + fileName + "\" they were supposed to.");
+        logger.error("None of the locations of the payloads matched with the ID \"" + fileID + "\" are ending with the filename \"" + fileName + "\", as it was supposed to.\nThe related payloads are: " + payloads);
         return true;
     }
 
@@ -488,8 +488,9 @@ public class FileUtils {
      * @param fileIDs
      * @param payloadsHashMultimap
      * @param s3Url
+     * @param fileNameWithExt
      */
-    public void setFullTextForMultipleIDs(Set<String> fileIDs, HashMultimap<String, Payload> payloadsHashMultimap, String s3Url) {
+    public void setFullTextForMultipleIDs(Set<String> fileIDs, HashMultimap<String, Payload> payloadsHashMultimap, String s3Url, String fileNameWithExt) {
         for ( String id : fileIDs ) {
             Set<Payload> payloads = payloadsHashMultimap.get(id);
             if ( payloads.isEmpty() ) {
@@ -497,11 +498,24 @@ public class FileUtils {
                 continue;
             }
 
-            for ( Payload payload : payloads )
+            for ( Payload payload : payloads ) {
-                if ( payload.getHash() != null )    // Update only for the records which led to a file, not all the records of this ID (an ID might have multiple original_urls pointing to different directions).
+                // Update only for the records which led to a file, not all the records of this ID (an ID might have multiple original_urls pointing to different directions).
+                String currentFileLoc = payload.getLocation();
+                if ( currentFileLoc != null ) {
+                    // Check that the current payload does not have a different file waiting to be uploaded. It is possible that multiple Payloads with the same ID, point to different files (because of different sourceUrls).
+                    Matcher matcher = FILENAME_WITH_EXTENSION.matcher(currentFileLoc);
+                    if ( matcher.matches() ) {
+                        String curFileNameWithExtension = matcher.group(1);
+                        if ( (curFileNameWithExtension != null) && !curFileNameWithExtension.isEmpty()
+                            && ! curFileNameWithExtension.equals(fileNameWithExt) ) { // If the file of this payload is NOT that same with the given one, then do NOT update it.
+                            continue;   // This different file, is waiting its upload-time, in the loop, where this method was called.
+                        }
+                    }
                     payload.setLocation(s3Url); // Update the file-location to the new S3-url. All the other file-data is already set from the Worker.
                 }
             }
+        }
+    }
 
     public boolean deleteDirectory(File curBatchDir) {
         try {