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| <div class="subTitle">org.apache.beam.sdk.io.kafka</div> |
| <h2 title="Interface TimestampPolicyFactory" class="title">Interface TimestampPolicyFactory<KeyT,ValueT></h2> |
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| <pre>@FunctionalInterface |
| public interface <span class="typeNameLabel">TimestampPolicyFactory<KeyT,ValueT></span> |
| extends java.io.Serializable</pre> |
| <div class="block">An extendable factory to create a <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicy.html" title="class in org.apache.beam.sdk.io.kafka"><code>TimestampPolicy</code></a> for each partition at runtime by |
| KafkaIO reader. Subclasses implement <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html#createTimestampPolicy-org.apache.kafka.common.TopicPartition-java.util.Optional-"><code>createTimestampPolicy(org.apache.kafka.common.TopicPartition, java.util.Optional<org.joda.time.Instant>)</code></a>, which is invoked by the the |
| reader while starting or resuming from a checkpoint. Two commonly used policies are provided. See |
| <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html#withLogAppendTime--"><code>withLogAppendTime()</code></a> and <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html#withProcessingTime--"><code>withProcessingTime()</code></a>.</div> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.LogAppendTimePolicy.html" title="class in org.apache.beam.sdk.io.kafka">TimestampPolicyFactory.LogAppendTimePolicy</a><<a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.LogAppendTimePolicy.html" title="type parameter in TimestampPolicyFactory.LogAppendTimePolicy">K</a>,<a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.LogAppendTimePolicy.html" title="type parameter in TimestampPolicyFactory.LogAppendTimePolicy">V</a>></span></code> |
| <div class="block">Assigns Kafka's log append time (server side ingestion time) to each record.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.ProcessingTimePolicy.html" title="class in org.apache.beam.sdk.io.kafka">TimestampPolicyFactory.ProcessingTimePolicy</a><<a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.ProcessingTimePolicy.html" title="type parameter in TimestampPolicyFactory.ProcessingTimePolicy">K</a>,<a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.ProcessingTimePolicy.html" title="type parameter in TimestampPolicyFactory.ProcessingTimePolicy">V</a>></span></code> |
| <div class="block">A simple policy that uses current time for event time and watermark.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.TimestampFnPolicy.html" title="class in org.apache.beam.sdk.io.kafka">TimestampPolicyFactory.TimestampFnPolicy</a><<a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.TimestampFnPolicy.html" title="type parameter in TimestampPolicyFactory.TimestampFnPolicy">K</a>,<a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.TimestampFnPolicy.html" title="type parameter in TimestampPolicyFactory.TimestampFnPolicy">V</a>></span></code> |
| <div class="block">Internal policy to support deprecated withTimestampFn API.</div> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicy.html" title="class in org.apache.beam.sdk.io.kafka">TimestampPolicy</a><<a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html" title="type parameter in TimestampPolicyFactory">KeyT</a>,<a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html" title="type parameter in TimestampPolicyFactory">ValueT</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html#createTimestampPolicy-org.apache.kafka.common.TopicPartition-java.util.Optional-">createTimestampPolicy</a></span>(<a href="https://static.javadoc.io/org.apache.kafka/kafka-clients/1.0.0/org/apache/kafka/common/TopicPartition.html?is-external=true" title="class or interface in org.apache.kafka.common">TopicPartition</a> tp, |
| java.util.Optional<<a href="https://static.javadoc.io/joda-time/joda-time/2.10.3/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a>> previousWatermark)</code> |
| <div class="block">Creates a TimestampPolicy for a partition.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <K,V> <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html" title="interface in org.apache.beam.sdk.io.kafka">TimestampPolicyFactory</a><K,V></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html#withCreateTime-org.joda.time.Duration-">withCreateTime</a></span>(<a href="https://static.javadoc.io/joda-time/joda-time/2.10.3/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a> maxDelay)</code> |
| <div class="block"><a href="../../../../../../org/apache/beam/sdk/io/kafka/CustomTimestampPolicyWithLimitedDelay.html" title="class in org.apache.beam.sdk.io.kafka"><code>CustomTimestampPolicyWithLimitedDelay</code></a> using <a href="../../../../../../org/apache/beam/sdk/io/kafka/KafkaTimestampType.html#CREATE_TIME"><code>KafkaTimestampType.CREATE_TIME</code></a> from |
| the record for timestamp.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <K,V> <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html" title="interface in org.apache.beam.sdk.io.kafka">TimestampPolicyFactory</a><K,V></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html#withLogAppendTime--">withLogAppendTime</a></span>()</code> |
| <div class="block">A <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicy.html" title="class in org.apache.beam.sdk.io.kafka"><code>TimestampPolicy</code></a> that assigns Kafka's log append time (server side ingestion time) to |
| each record.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <K,V> <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html" title="interface in org.apache.beam.sdk.io.kafka">TimestampPolicyFactory</a><K,V></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html#withProcessingTime--">withProcessingTime</a></span>()</code> |
| <div class="block">A <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicy.html" title="class in org.apache.beam.sdk.io.kafka"><code>TimestampPolicy</code></a> that assigns processing time to each record.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static <K,V> <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html" title="interface in org.apache.beam.sdk.io.kafka">TimestampPolicyFactory</a><K,V></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html#withTimestampFn-org.apache.beam.sdk.transforms.SerializableFunction-">withTimestampFn</a></span>(<a href="../../../../../../org/apache/beam/sdk/transforms/SerializableFunction.html" title="interface in org.apache.beam.sdk.transforms">SerializableFunction</a><<a href="../../../../../../org/apache/beam/sdk/io/kafka/KafkaRecord.html" title="class in org.apache.beam.sdk.io.kafka">KafkaRecord</a><K,V>,<a href="https://static.javadoc.io/joda-time/joda-time/2.10.3/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a>> timestampFn)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="block"><span class="deprecationComment">Use @<a href="../../../../../../org/apache/beam/sdk/io/kafka/CustomTimestampPolicyWithLimitedDelay.html" title="class in org.apache.beam.sdk.io.kafka"><code>CustomTimestampPolicyWithLimitedDelay</code></a>.</span></div> |
| </div> |
| </td> |
| </tr> |
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| <a name="createTimestampPolicy-org.apache.kafka.common.TopicPartition-java.util.Optional-"> |
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| <h4>createTimestampPolicy</h4> |
| <pre><a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicy.html" title="class in org.apache.beam.sdk.io.kafka">TimestampPolicy</a><<a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html" title="type parameter in TimestampPolicyFactory">KeyT</a>,<a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html" title="type parameter in TimestampPolicyFactory">ValueT</a>> createTimestampPolicy(<a href="https://static.javadoc.io/org.apache.kafka/kafka-clients/1.0.0/org/apache/kafka/common/TopicPartition.html?is-external=true" title="class or interface in org.apache.kafka.common">TopicPartition</a> tp, |
| java.util.Optional<<a href="https://static.javadoc.io/joda-time/joda-time/2.10.3/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a>> previousWatermark)</pre> |
| <div class="block">Creates a TimestampPolicy for a partition. This is invoked by the reader at the start or while |
| resuming from previous checkpoint.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>tp</code> - The returned policy applies to records from this <a href="https://static.javadoc.io/org.apache.kafka/kafka-clients/1.0.0/org/apache/kafka/common/TopicPartition.html?is-external=true" title="class or interface in org.apache.kafka.common"><code>TopicPartition</code></a>.</dd> |
| <dd><code>previousWatermark</code> - The latest check-pointed watermark. This is set when the reader is |
| resuming from a checkpoint. This is a good value to return by implementations of <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicy.html#getWatermark-org.apache.beam.sdk.io.kafka.TimestampPolicy.PartitionContext-"><code>TimestampPolicy.getWatermark(PartitionContext)</code></a> until a better watermark can be established |
| as more records are read.</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>withProcessingTime</h4> |
| <pre>static <K,V> <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html" title="interface in org.apache.beam.sdk.io.kafka">TimestampPolicyFactory</a><K,V> withProcessingTime()</pre> |
| <div class="block">A <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicy.html" title="class in org.apache.beam.sdk.io.kafka"><code>TimestampPolicy</code></a> that assigns processing time to each record. Specifically, this is |
| the timestamp when the record becomes 'current' in the reader. The watermark aways advances to |
| current time.</div> |
| </li> |
| </ul> |
| <a name="withLogAppendTime--"> |
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| <h4>withLogAppendTime</h4> |
| <pre>static <K,V> <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html" title="interface in org.apache.beam.sdk.io.kafka">TimestampPolicyFactory</a><K,V> withLogAppendTime()</pre> |
| <div class="block">A <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicy.html" title="class in org.apache.beam.sdk.io.kafka"><code>TimestampPolicy</code></a> that assigns Kafka's log append time (server side ingestion time) to |
| each record. The watermark for each Kafka partition is the timestamp of the last record read. |
| If a partition is idle, the watermark advances roughly to 'current time - 2 seconds'. See |
| <a href="../../../../../../org/apache/beam/sdk/io/kafka/KafkaIO.Read.html#withLogAppendTime--"><code>KafkaIO.Read.withLogAppendTime()</code></a> for longer description.</div> |
| </li> |
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| <h4>withCreateTime</h4> |
| <pre>static <K,V> <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html" title="interface in org.apache.beam.sdk.io.kafka">TimestampPolicyFactory</a><K,V> withCreateTime(<a href="https://static.javadoc.io/joda-time/joda-time/2.10.3/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a> maxDelay)</pre> |
| <div class="block"><a href="../../../../../../org/apache/beam/sdk/io/kafka/CustomTimestampPolicyWithLimitedDelay.html" title="class in org.apache.beam.sdk.io.kafka"><code>CustomTimestampPolicyWithLimitedDelay</code></a> using <a href="../../../../../../org/apache/beam/sdk/io/kafka/KafkaTimestampType.html#CREATE_TIME"><code>KafkaTimestampType.CREATE_TIME</code></a> from |
| the record for timestamp. See <a href="../../../../../../org/apache/beam/sdk/io/kafka/KafkaIO.Read.html#withCreateTime-org.joda.time.Duration-"><code>KafkaIO.Read.withCreateTime(Duration)</code></a> for more complete |
| documentation.</div> |
| </li> |
| </ul> |
| <a name="withTimestampFn-org.apache.beam.sdk.transforms.SerializableFunction-"> |
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| <h4>withTimestampFn</h4> |
| <pre>@Deprecated |
| static <K,V> <a href="../../../../../../org/apache/beam/sdk/io/kafka/TimestampPolicyFactory.html" title="interface in org.apache.beam.sdk.io.kafka">TimestampPolicyFactory</a><K,V> withTimestampFn(<a href="../../../../../../org/apache/beam/sdk/transforms/SerializableFunction.html" title="interface in org.apache.beam.sdk.transforms">SerializableFunction</a><<a href="../../../../../../org/apache/beam/sdk/io/kafka/KafkaRecord.html" title="class in org.apache.beam.sdk.io.kafka">KafkaRecord</a><K,V>,<a href="https://static.javadoc.io/joda-time/joda-time/2.10.3/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a>> timestampFn)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">Use @<a href="../../../../../../org/apache/beam/sdk/io/kafka/CustomTimestampPolicyWithLimitedDelay.html" title="class in org.apache.beam.sdk.io.kafka"><code>CustomTimestampPolicyWithLimitedDelay</code></a>.</span></div> |
| <div class="block">Used by the Read transform to support old timestamp functions API. This exists only to support |
| other deprecated API <a href="../../../../../../org/apache/beam/sdk/io/kafka/KafkaIO.Read.html#withTimestampFn-org.apache.beam.sdk.transforms.SerializableFunction-"><code>KafkaIO.Read.withTimestampFn(SerializableFunction)</code></a>.<br> |
| TODO(rangadi): Make this package private or remove it. It was never meant to be public.</div> |
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