send CSV file via REST

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

@@ -9,6 +9,10 @@ import java.nio.channels.SocketChannel;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.nio.file.StandardOpenOption;
+import java.time.Instant;
+import java.time.OffsetDateTime;
+import java.time.ZoneOffset;
+import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -21,7 +25,7 @@ import java.util.concurrent.LinkedBlockingDeque;
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
-import org.lucares.pdbui.TcpIngestor;
+import org.lucares.collections.LongList;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -59,7 +63,7 @@ public class PdbTestUtil {
         sendAsCsv(keys, entries);
     }
 
-    public static final void sendAsCsv(Collection<String> keys, final Collection<Map<String, Object>> entries)
+    public static final void sendAsCsv(final Collection<String> keys, final Collection<Map<String, Object>> entries)
             throws IOException, InterruptedException {
 
         final StringBuilder csv = new StringBuilder();
@@ -177,4 +181,24 @@ public class PdbTestUtil {
         return result;
     }
 
+    public static String timeValueLongListToString(final LongList timeValueLongList) {
+        final StringBuilder result = new StringBuilder();
+
+        int i = 0;
+        while (i < timeValueLongList.size()) {
+            final OffsetDateTime time = OffsetDateTime.ofInstant(Instant.ofEpochMilli(timeValueLongList.get(i)),
+                    ZoneOffset.UTC);
+            i++;
+            final long value = timeValueLongList.get(i);
+            i++;
+
+            result.append(time.format(DateTimeFormatter.ISO_DATE_TIME));
+            result.append("=");
+            result.append(value);
+            result.append("\n");
+        }
+
+        return result.toString();
+    }
+
 }