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80 lines
3.8 KiB
Python
80 lines
3.8 KiB
Python
################################################################################
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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################################################################################
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from pyflink.common import Duration
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from pyflink.common.watermark_strategy import WatermarkStrategy
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from pyflink.java_gateway import get_gateway
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from pyflink.util.java_utils import is_instance_of, get_field_value
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from pyflink.testing.test_case_utils import PyFlinkTestCase
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class WatermarkStrategyTests(PyFlinkTestCase):
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def test_with_idleness(self):
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jvm = get_gateway().jvm
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j_watermark_strategy = WatermarkStrategy.no_watermarks().with_idleness(
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Duration.of_seconds(5)
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)._j_watermark_strategy
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self.assertTrue(is_instance_of(
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j_watermark_strategy,
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jvm.org.apache.flink.api.common.eventtime.WatermarkStrategyWithIdleness
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))
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self.assertEqual(get_field_value(j_watermark_strategy, "idlenessTimeout").toMillis(), 5000)
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def test_with_watermark_alignment(self):
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jvm = get_gateway().jvm
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j_watermark_strategy = WatermarkStrategy.no_watermarks().with_watermark_alignment(
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"alignment-group-1", Duration.of_seconds(20), Duration.of_seconds(10)
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)._j_watermark_strategy
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self.assertTrue(is_instance_of(
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j_watermark_strategy,
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jvm.org.apache.flink.api.common.eventtime.WatermarksWithWatermarkAlignment
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))
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alignment_parameters = j_watermark_strategy.getAlignmentParameters()
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self.assertEqual(alignment_parameters.getWatermarkGroup(), "alignment-group-1")
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self.assertEqual(alignment_parameters.getMaxAllowedWatermarkDrift(), 20000)
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self.assertEqual(alignment_parameters.getUpdateInterval(), 10000)
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def test_for_monotonous_timestamps(self):
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jvm = get_gateway().jvm
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j_watermark_strategy = WatermarkStrategy.for_monotonous_timestamps()._j_watermark_strategy
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self.assertTrue(is_instance_of(
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j_watermark_strategy.createWatermarkGenerator(None),
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jvm.org.apache.flink.api.common.eventtime.AscendingTimestampsWatermarks
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))
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def test_for_bounded_out_of_orderness(self):
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jvm = get_gateway().jvm
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j_watermark_strategy = WatermarkStrategy.for_bounded_out_of_orderness(
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Duration.of_seconds(3)
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)._j_watermark_strategy
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j_watermark_generator = j_watermark_strategy.createWatermarkGenerator(None)
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self.assertTrue(is_instance_of(
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j_watermark_generator,
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jvm.org.apache.flink.api.common.eventtime.BoundedOutOfOrdernessWatermarks
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))
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self.assertEqual(get_field_value(j_watermark_generator, "outOfOrdernessMillis"), 3000)
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def test_no_watermarks(self):
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jvm = get_gateway().jvm
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j_watermark_strategy = WatermarkStrategy.no_watermarks()._j_watermark_strategy
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self.assertTrue(is_instance_of(
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j_watermark_strategy.createWatermarkGenerator(None),
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jvm.org.apache.flink.api.common.eventtime.NoWatermarksGenerator
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))
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