fix CSV parser corrupts duration if duration is last element in line

pdb-ui/src/main/java/org/lucares/pdbui/TcpIngestor.java

@@ -240,7 +240,7 @@ public class TcpIngestor implements Ingestor, AutoCloseable, DisposableBean {
 					} else if (key == keyTimestamp) {
 						epochMilli = dateParser.parseAsEpochMilli(line, lastSeparatorPosition + 1);
 					} else if (key == keyDuration) {
-						duration = parseLong(line, lastSeparatorPosition + 1);
+						duration = parseLong(line, lastSeparatorPosition + 1, separatorPosition);
 					} else if (lastSeparatorPosition + 1 < separatorPosition) { // value is not empty
 						final int value = Tags.STRING_COMPRESSOR.put(line, lastSeparatorPosition + 1,
 								separatorPosition);
@@ -258,7 +258,7 @@ public class TcpIngestor implements Ingestor, AutoCloseable, DisposableBean {
 			return null;
 		}
 
-		private static long parseLong(final byte[] bytes, final int start) {
+		private static long parseLong(final byte[] bytes, final int start, int endExclusive) {
 			long result = 0;
 			int i = start;
 			int c = bytes[i];
@@ -267,7 +267,7 @@ public class TcpIngestor implements Ingestor, AutoCloseable, DisposableBean {
 				sign = -1;
 				i++;
 			}
-			while ((c = bytes[i]) >= 48 && c <= 57) {
+			while (i < endExclusive && (c = bytes[i]) >= 48 && c <= 57) {
 				result = result * 10 + (c - 48);
 				i++;
 			}

pdb-ui/src/test/java/org/lucares/pdbui/PdbTestUtil.java

@@ -56,6 +56,13 @@ public class PdbTestUtil {
 
     final Set<String> keys = entries.stream().map(Map::keySet).flatMap(Set::stream).collect(Collectors.toSet());
 
+    sendAsCsv(keys, entries);
+  }
+
+  public static final void sendAsCsv(Collection<String> keys, final Collection<Map<String, Object>> entries)
+      throws IOException, InterruptedException {
+
+
     final StringBuilder csv = new StringBuilder();
 
     csv.append(String.join(",", keys));

pdb-ui/src/test/java/org/lucares/pdbui/TcpIngestorTest.java

@@ -281,4 +281,41 @@ public class TcpIngestorTest {
 					"the ignored field is not returned");
 		}
 	}
+	
+	
+	public void testCsvIngestorHandlesDurationAtEnd() throws Exception {
+
+	  String host = "someHost";
+	  long value1 = 222;
+	  long value2= 1;
+      try (TcpIngestor ingestor = new TcpIngestor(dataDirectory)) {
+
+          ingestor.start();
+
+          final Map<String, Object> entry1 = new HashMap<>();
+          entry1.put("@timestamp",
+                  Instant.ofEpochMilli(1).atOffset(ZoneOffset.UTC).format(DateTimeFormatter.ISO_ZONED_DATE_TIME));
+          entry1.put("host", host);
+          entry1.put("duration", value1);
+          
+          final Map<String, Object> entry2 = new HashMap<>();
+          entry2.put("@timestamp",
+                  Instant.ofEpochMilli(2).atOffset(ZoneOffset.UTC).format(DateTimeFormatter.ISO_ZONED_DATE_TIME));
+          entry2.put("host", host);
+          entry2.put("duration", value2);
+
+          PdbTestUtil.sendAsCsv(List.of("@timestamp","host","duration"), List.of(entry1, entry2));
+      } catch (final Exception e) {
+          LOGGER.error("", e);
+          throw e;
+      }
+
+      try (PerformanceDb db = new PerformanceDb(dataDirectory)) {
+        final LongList result = db.get(new Query("host=" + host, DateTimeRange.max())).singleGroup().flatMap();
+        Assert.assertEquals(result.size(), 4);
+
+        Assert.assertEquals(result.get(1), value1);
+        Assert.assertEquals(result.get(3), value2);
+      }
+  }
 }