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<div class="subTitle">org.apache.beam.sdk.io.gcp.pubsub</div>
<h2 title="Class PubsubIO" class="title">Class PubsubIO</h2>
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<li>java.lang.Object</li>
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<pre>public class <span class="typeNameLabel">PubsubIO</span>
extends java.lang.Object</pre>
<div class="block">Read and Write <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a>s for Cloud Pub/Sub streams. These transforms create and consume
unbounded <a href="../../../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollections</code></a>.
<h3>Using local emulator</h3>
<p>In order to use local emulator for Pubsub you should use <code>PubsubOptions#setPubsubRootUrl(String)</code> method to set host and port of your local emulator.
<h3>Permissions</h3>
<p>Permission requirements depend on the <a href="../../../../../../../org/apache/beam/sdk/PipelineRunner.html" title="class in org.apache.beam.sdk"><code>PipelineRunner</code></a> that is used to execute the Beam
pipeline. Please refer to the documentation of corresponding <a href="../../../../../../../org/apache/beam/sdk/PipelineRunner.html" title="class in org.apache.beam.sdk"><code>PipelineRunners</code></a> for more details.</div>
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<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.PubsubSubscription.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.PubsubSubscription</a></span></code>
<div class="block">Class representing a Cloud Pub/Sub Subscription.</div>
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<tr class="rowColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.PubsubTopic.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.PubsubTopic</a></span></code>
<div class="block">Class representing a Cloud Pub/Sub Topic.</div>
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<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Read.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Read</a>&lt;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Read.html" title="type parameter in PubsubIO.Read">T</a>&gt;</span></code>
<div class="block">Implementation of <a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.html#read--"><code>read()</code></a>.</div>
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<td class="colFirst"><code>static class&nbsp;</code></td>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>static &lt;T&gt;&nbsp;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Read.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Read</a>&lt;T&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.html#readAvros-java.lang.Class-">readAvros</a></span>(java.lang.Class&lt;T&gt;&nbsp;clazz)</code>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that continuously reads binary encoded Avro messages of the given
type from a Google Cloud Pub/Sub stream.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Read.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Read</a>&lt;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubMessage.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubMessage</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.html#readMessages--">readMessages</a></span>()</code>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that continuously reads from a Google Cloud Pub/Sub stream.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>static <a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Read.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Read</a>&lt;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubMessage.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubMessage</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.html#readMessagesWithAttributes--">readMessagesWithAttributes</a></span>()</code>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that continuously reads from a Google Cloud Pub/Sub stream.</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>static &lt;T extends com.google.protobuf.Message&gt;<br><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Read.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Read</a>&lt;T&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.html#readProtos-java.lang.Class-">readProtos</a></span>(java.lang.Class&lt;T&gt;&nbsp;messageClass)</code>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that continuously reads binary encoded protobuf messages of the
given type from a Google Cloud Pub/Sub stream.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static <a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Read.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Read</a>&lt;java.lang.String&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.html#readStrings--">readStrings</a></span>()</code>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that continuously reads UTF-8 encoded strings from a Google Cloud
Pub/Sub stream.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static &lt;T&gt;&nbsp;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Write.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Write</a>&lt;T&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.html#writeAvros-java.lang.Class-">writeAvros</a></span>(java.lang.Class&lt;T&gt;&nbsp;clazz)</code>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that writes binary encoded Avro messages of a given type to a
Google Cloud Pub/Sub stream.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>static <a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Write.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Write</a>&lt;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubMessage.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubMessage</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.html#writeMessages--">writeMessages</a></span>()</code>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that writes to a Google Cloud Pub/Sub stream.</div>
</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>static &lt;T extends com.google.protobuf.Message&gt;<br><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Write.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Write</a>&lt;T&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.html#writeProtos-java.lang.Class-">writeProtos</a></span>(java.lang.Class&lt;T&gt;&nbsp;messageClass)</code>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that writes binary encoded protobuf messages of a given type to a
Google Cloud Pub/Sub stream.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>static <a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Write.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Write</a>&lt;java.lang.String&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.html#writeStrings--">writeStrings</a></span>()</code>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that writes UTF-8 encoded strings to a Google Cloud Pub/Sub
stream.</div>
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<pre>public static&nbsp;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Read.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Read</a>&lt;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubMessage.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubMessage</a>&gt;&nbsp;readMessages()</pre>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that continuously reads from a Google Cloud Pub/Sub stream. The
messages will only contain a <a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubMessage.html#getPayload--"><code>payload</code></a>, but no <a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubMessage.html#getAttributeMap--"><code>attributes</code></a>.</div>
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<pre>public static&nbsp;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Read.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Read</a>&lt;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubMessage.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubMessage</a>&gt;&nbsp;readMessagesWithAttributes()</pre>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that continuously reads from a Google Cloud Pub/Sub stream. The
messages will contain both a <a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubMessage.html#getPayload--"><code>payload</code></a> and <a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubMessage.html#getAttributeMap--"><code>attributes</code></a>.</div>
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<pre>public static&nbsp;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Read.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Read</a>&lt;java.lang.String&gt;&nbsp;readStrings()</pre>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that continuously reads UTF-8 encoded strings from a Google Cloud
Pub/Sub stream.</div>
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<pre>public static&nbsp;&lt;T extends com.google.protobuf.Message&gt;&nbsp;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Read.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Read</a>&lt;T&gt;&nbsp;readProtos(java.lang.Class&lt;T&gt;&nbsp;messageClass)</pre>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that continuously reads binary encoded protobuf messages of the
given type from a Google Cloud Pub/Sub stream.</div>
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<pre>public static&nbsp;&lt;T&gt;&nbsp;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Read.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Read</a>&lt;T&gt;&nbsp;readAvros(java.lang.Class&lt;T&gt;&nbsp;clazz)</pre>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that continuously reads binary encoded Avro messages of the given
type from a Google Cloud Pub/Sub stream.</div>
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<pre>public static&nbsp;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Write.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Write</a>&lt;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubMessage.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubMessage</a>&gt;&nbsp;writeMessages()</pre>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that writes to a Google Cloud Pub/Sub stream.</div>
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<pre>public static&nbsp;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Write.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Write</a>&lt;java.lang.String&gt;&nbsp;writeStrings()</pre>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that writes UTF-8 encoded strings to a Google Cloud Pub/Sub
stream.</div>
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<pre>public static&nbsp;&lt;T extends com.google.protobuf.Message&gt;&nbsp;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Write.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Write</a>&lt;T&gt;&nbsp;writeProtos(java.lang.Class&lt;T&gt;&nbsp;messageClass)</pre>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that writes binary encoded protobuf messages of a given type to a
Google Cloud Pub/Sub stream.</div>
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<pre>public static&nbsp;&lt;T&gt;&nbsp;<a href="../../../../../../../org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.Write.html" title="class in org.apache.beam.sdk.io.gcp.pubsub">PubsubIO.Write</a>&lt;T&gt;&nbsp;writeAvros(java.lang.Class&lt;T&gt;&nbsp;clazz)</pre>
<div class="block">Returns A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that writes binary encoded Avro messages of a given type to a
Google Cloud Pub/Sub stream.</div>
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