Aggregations: Be lenient when converting local to utc time in time zo…

…ne roundings

This solves a problem in the time zone rounding classes where time dates that
fall into a DST gap will cause joda time library to throw an exception.
Changing the conversion methods 'strict' option to false prevents this.

Closes #10025

src/main/java/org/elasticsearch/common/rounding/TimeZoneRounding.java

@@ -157,7 +157,7 @@ public byte id() {
         @Override
         public long roundKey(long utcMillis) {
             long local = preTz.convertUTCToLocal(utcMillis);
-            return preTz.convertLocalToUTC(field.roundFloor(local), true, utcMillis);
+            return preTz.convertLocalToUTC(field.roundFloor(local), false, utcMillis);
         }
 
         @Override
@@ -168,11 +168,11 @@ public long valueForKey(long time) {
 
         @Override
         public long nextRoundingValue(long time) {
-            long currentWithoutPostZone = postTz.convertLocalToUTC(time, true);
+            long currentWithoutPostZone = postTz.convertLocalToUTC(time, false);
             // we also need to correct for preTz because rounding takes place in local time zone
             long local = preTz.convertUTCToLocal(currentWithoutPostZone);
             long nextLocal = durationField.add(local, 1);
-            return postTz.convertUTCToLocal(preTz.convertLocalToUTC((nextLocal), true));
+            return postTz.convertUTCToLocal(preTz.convertLocalToUTC((nextLocal), false));
         }
 
         @Override
@@ -283,7 +283,7 @@ public long valueForKey(long time) {
 
         @Override
         public long nextRoundingValue(long currentWithPostZone) {
-            long currentWithoutPostZone = postTz.convertLocalToUTC(currentWithPostZone, true);
+            long currentWithoutPostZone = postTz.convertLocalToUTC(currentWithPostZone, false);
             long nextWithoutPostZone = durationField.add(currentWithoutPostZone, 1);
             return postTz.convertUTCToLocal(nextWithoutPostZone);
         }
@@ -386,7 +386,7 @@ public long roundKey(long utcMillis) {
         public long valueForKey(long key) {
             long time = Rounding.Interval.roundValue(key, interval);
             // now, time is still in local, move it to UTC
-            time = preTz.convertLocalToUTC(time,  true);
+            time = preTz.convertLocalToUTC(time,  false);
             // now apply post Tz
             time = postTz.convertUTCToLocal(time);
             return time;

src/test/java/org/elasticsearch/common/rounding/TimeZoneRoundingTests.java

@@ -178,6 +178,25 @@ public void testNextRoundingValueCornerCase8209() {
         assertThat(roundedValue, equalTo(time("2014-04-30T23:00:00.000Z", DateTimeZone.UTC)));
     }
 
+    /**
+     * test for #10025, strict local to UTC conversion can cause joda exceptions
+     * on DST start
+     */
+    @Test
+    public void testLenientConversionDST() {
+        DateTimeZone tz = DateTimeZone.forID("America/Sao_Paulo");
+        long start = time("2014-10-18T20:50:00.000", tz);
+        long end = time("2014-10-19T01:00:00.000", tz);
+        Rounding tzRounding = new TimeZoneRounding.TimeTimeZoneRoundingFloor(DateTimeUnit.MINUTES_OF_HOUR, tz, 
+                DateTimeZone.UTC);
+        Rounding dayTzRounding = new TimeZoneRounding.DayTimeZoneRoundingFloor(DateTimeUnit.MINUTES_OF_HOUR, tz, 
+                DateTimeZone.UTC);
+        for (long time = start; time < end; time = time + 60000) {
+            assertThat(tzRounding.nextRoundingValue(time), greaterThan(time));
+            assertThat(dayTzRounding.nextRoundingValue(time), greaterThan(time));
+        }
+    }
+
     private long utc(String time) {
         return time(time, DateTimeZone.UTC);
     }