<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Pulsar REST · Apache Pulsar</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Pulsar not only provides REST endpoints to manage resources in Pulsar clusters, but also provides methods to query the state for those resources. In addition, Pulsar REST provides a simple way to interact with Pulsar **without using client libraries**, which is convenient for applications to use HTTP to interact with Pulsar. "/><meta name="docsearch:version" content="next"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Pulsar REST · Apache Pulsar"/><meta property="og:type" content="website"/><meta property="og:url" content="https://pulsar.apache.org/"/><meta property="og:description" content="Pulsar not only provides REST endpoints to manage resources in Pulsar clusters, but also provides methods to query the state for those resources. In addition, Pulsar REST provides a simple way to interact with Pulsar **without using client libraries**, which is convenient for applications to use HTTP to interact with Pulsar. "/><meta name="twitter:card" content="summary"/><meta name="twitter:image" content="https://pulsar.apache.org/img/pulsar.svg"/><link rel="shortcut icon" href="/img/pulsar.ico"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/atom-one-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://pulsar.apache.org/blog/atom.xml" title="Apache Pulsar Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://pulsar.apache.org/blog/feed.xml" title="Apache Pulsar Blog RSS Feed"/><link rel="stylesheet" href="/css/code-blocks-buttons.css"/><script type="text/javascript" src="https://buttons.github.io/buttons.js"></script><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.0/clipboard.min.js"></script><script type="text/javascript" src="/js/custom.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head><body class="sideNavVisible separateOnPageNav"><div class="fixedHeaderContainer"><div class="headerWrapper wrapper"><header><a href="/en"><img class="logo" src="/img/pulsar.svg" alt="Apache Pulsar"/></a><a href="/en/versions"><h3>next</h3></a><div class="navigationWrapper navigationSlider"><nav class="slidingNav"><ul class="nav-site nav-site-internal"><li class="siteNavGroupActive"><a href="/docs/en/next/getting-started-standalone" target="_self">Docs</a></li><li class=""><a href="/en/download" target="_self">Download</a></li><li class="siteNavGroupActive"><a href="/docs/en/next/client-libraries" target="_self">Clients</a></li><li class=""><a href="#restapis" target="_self">REST APIs</a></li><li class=""><a href="#cli" target="_self">Cli</a></li><li class=""><a href="/blog/" target="_self">Blog</a></li><li class=""><a href="#community" target="_self">Community</a></li><li class=""><a href="#apache" target="_self">Apache</a></li><li class=""><a href="https://pulsar-next.staged.apache.org/" target="_self">New Website (Beta)</a></li><span><li><a id="languages-menu" href="#"><img class="languages-icon" src="/img/language.svg" alt="Languages icon"/>English</a><div id="languages-dropdown" class="hide"><ul id="languages-dropdown-items"><li><a href="/docs/ja/next/client-libraries-rest">日本語</a></li><li><a href="/docs/fr/next/client-libraries-rest">Français</a></li><li><a href="/docs/ko/next/client-libraries-rest">한국어</a></li><li><a href="/docs/zh-CN/next/client-libraries-rest">中文</a></li><li><a href="/docs/zh-TW/next/client-libraries-rest">繁體中文</a></li><li><a href="https://crowdin.com/project/apache-pulsar" target="_blank" rel="noreferrer noopener">Help Translate</a></li></ul></div></li><script>
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<h2><a class="anchor" aria-hidden="true" id="connection"></a><a href="#connection" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Connection</h2>
<p>To connect to Pulsar, you need to specify a URL.</p>
<ul>
<li><p>Produce messages to non-partitioned or partitioned topics</p>
<pre><code class="hljs"><span class="xml">brokerUrl:</span><span class="hljs-template-variable">{8080/8081}</span><span class="xml">/topics/</span><span class="hljs-template-variable">{persistent/non-persistent}</span><span class="xml">/</span><span class="hljs-template-variable">{my-tenant}</span><span class="xml">/</span><span class="hljs-template-variable">{my-namespace}</span><span class="xml">/</span><span class="hljs-template-variable">{my-topic}</span><span class="xml">
</span></code></pre></li>
<li><p>Produce messages to specific partitions of partitioned topics</p>
<pre><code class="hljs"><span class="xml">brokerUrl:</span><span class="hljs-template-variable">{8080/8081}</span><span class="xml">/topics/</span><span class="hljs-template-variable">{persistent/non-persistent}</span><span class="xml">/</span><span class="hljs-template-variable">{my-tenant}</span><span class="xml">/</span><span class="hljs-template-variable">{my-namespace}</span><span class="xml">/</span><span class="hljs-template-variable">{my-topic}</span><span class="xml">/partitions/</span><span class="hljs-template-variable">{partition-number}</span><span class="xml">
</span></code></pre></li>
</ul>
<h2><a class="anchor" aria-hidden="true" id="producer"></a><a href="#producer" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Producer</h2>
<p>Currently, you can produce messages to the following destinations with tools like cURL or Postman via REST.</p>
<ul>
<li><p>Non-partitioned or partitioned topics</p></li>
<li><p>Specific partitions of partitioned topics</p></li>
</ul>
<blockquote>
<p><strong>Note</strong></p>
<p>You can only produce messages to <strong>topics that already exist</strong> in Pulsar via REST.</p>
</blockquote>
<p>Consuming and reading messages via REST will be supported in the future.</p>
<h3><a class="anchor" aria-hidden="true" id="message"></a><a href="#message" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Message</h3>
<ul>
<li><p>Below is the structure of a request payload.</p>
<table>
<thead>
<tr><th>Parameter</th><th>Required?</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td><code>schemaVersion</code></td><td>No</td><td>Schema version of existing schema used for this message </br></br>You need provide one of the following: <br/><br/> - <code>schemaVersion</code> <br/> - <code>keySchema</code>/<code>valueSchema</code><br/><br/>If both of them are provided, then <code>schemaVersion</code> is used</td></tr>
<tr><td><code>keySchema/valueSchema</code></td><td>No</td><td>Key schema / Value schema used for this message</td></tr>
<tr><td><code>producerName</code></td><td>No</td><td>Producer name</td></tr>
<tr><td><code>Messages[] SingleMessage</code></td><td>Yes</td><td>Messages to be sent</td></tr>
</tbody>
</table>
</li>
<li><p>Below is the structure of a message.</p>
<table>
<thead>
<tr><th>Parameter</th><th>Required?</th><th>Type</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td><code>payload</code></td><td>Yes</td><td><code>String</code></td><td>Actual message payload </br></br>Messages are sent in strings and encoded with given schemas on the server side</td></tr>
<tr><td><code>properties</code></td><td>No</td><td><code>Map&lt;String, String&gt;</code></td><td>Custom properties</td></tr>
<tr><td><code>key</code></td><td>No</td><td><code>String</code></td><td>Partition key</td></tr>
<tr><td><code>replicationClusters</code></td><td>No</td><td><code>List&lt;String&gt;</code></td><td>Clusters to which messages replicate</td></tr>
<tr><td><code>eventTime</code></td><td>No</td><td><code>String</code></td><td>Message event time</td></tr>
<tr><td><code>sequenceId</code></td><td>No</td><td><code>long</code></td><td>Message sequence ID</td></tr>
<tr><td><code>disableReplication</code></td><td>No</td><td><code>boolean</code></td><td>Whether to disable replication of messages</td></tr>
<tr><td><code>deliverAt</code></td><td>No</td><td><code>long</code></td><td>Deliver messages only at or after specified absolute timestamp</td></tr>
<tr><td><code>deliverAfterMs</code></td><td>No</td><td><code>long</code></td><td>Deliver messages only after specified relative delay (in milliseconds)</td></tr>
</tbody>
</table>
</li>
</ul>
<h3><a class="anchor" aria-hidden="true" id="schema"></a><a href="#schema" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Schema</h3>
<ul>
<li><p>Currently, Primitive, Avro, JSON, and KeyValue schemas are supported.</p></li>
<li><p>For Primitive, Avro and JSON schemas, schemas should be provided as the full schema encoded as a string.</p></li>
<li><p>If the schema is not set, messages are encoded with string schema.</p></li>
</ul>
<h3><a class="anchor" aria-hidden="true" id="example"></a><a href="#example" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Example</h3>
<p>Below is an example of sending messages to topics using JSON schema via REST.</p>
<p>Assume that you send messages representing the following class.</p>
<pre><code class="hljs css language-java">   <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Seller</span> </span>{
        <span class="hljs-keyword">public</span> String state;
        <span class="hljs-keyword">public</span> String street;
        <span class="hljs-keyword">public</span> <span class="hljs-keyword">long</span> zipCode;
    }

    <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">PC</span> </span>{
        <span class="hljs-keyword">public</span> String brand;
        <span class="hljs-keyword">public</span> String model;
        <span class="hljs-keyword">public</span> <span class="hljs-keyword">int</span> year;
        <span class="hljs-keyword">public</span> GPU gpu;
        <span class="hljs-keyword">public</span> Seller seller;
    }
</code></pre>
<p>Send messages to topics with JSON schema using the command below.</p>
<pre><code class="hljs css language-shell">curl --location --request POST 'brokerUrl:{8080/8081}/topics/{persistent/non-persistent}/{my-tenant}/{my-namespace}/{my-topic}' \
--header 'Content-Type: application/json' \
--data-raw '{
  "valueSchema": "{\"name\":\"\",\"schema\":\"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\",\"type\":\"JSON\",\"properties\":{\"__jsr310ConversionEnabled\":\"false\",\"__alwaysAllowNull\":\"true\"},\"schemaDefinition\":\"{\\\"type\\\":\\\"record\\\",\\\"name\\\":\\\"PC\\\",\\\"namespace\\\":\\\"org.apache.pulsar.broker.admin.TopicsTest\\\",\\\"fields\\\":[{\\\"name\\\":\\\"brand\\\",\\\"type\\\":[\\\"null\\\",\\\"string\\\"],\\\"default\\\":null},{\\\"name\\\":\\\"gpu\\\",\\\"type\\\":[\\\"null\\\",{\\\"type\\\":\\\"enum\\\",\\\"name\\\":\\\"GPU\\\",\\\"symbols\\\":[\\\"AMD\\\",\\\"NVIDIA\\\"]}],\\\"default\\\":null},{\\\"name\\\":\\\"model\\\",\\\"type\\\":[\\\"null\\\",\\\"string\\\"],\\\"default\\\":null},{\\\"name\\\":\\\"seller\\\",\\\"type\\\":[\\\"null\\\",{\\\"type\\\":\\\"record\\\",\\\"name\\\":\\\"Seller\\\",\\\"fields\\\":[{\\\"name\\\":\\\"state\\\",\\\"type\\\":[\\\"null\\\",\\\"string\\\"],\\\"default\\\":null},{\\\"name\\\":\\\"street\\\",\\\"type\\\":[\\\"null\\\",\\\"string\\\"],\\\"default\\\":null},{\\\"name\\\":\\\"zipCode\\\",\\\"type\\\":\\\"long\\\"}]}],\\\"default\\\":null},{\\\"name\\\":\\\"year\\\",\\\"type\\\":\\\"int\\\"}]}\"}",

// Schema data is just the base 64 encoded schemaDefinition.

  "producerName": "rest-producer",
  "messages": [
    {
      "key":"my-key",
      "payload":"{\"brand\":\"dell\",\"model\":\"alienware\",\"year\":2021,\"gpu\":\"AMD\",\"seller\":{\"state\":\"WA\",\"street\":\"main street\",\"zipCode\":98004}}",
      "eventTime":1603045262772,
      "sequenceId":1
    },
    {
      "key":"my-key",
      "payload":"{\"brand\":\"asus\",\"model\":\"rog\",\"year\":2020,\"gpu\":\"NVIDIA\",\"seller\":{\"state\":\"CA\",\"street\":\"back street\",\"zipCode\":90232}}",
      "eventTime":1603045262772,
      "sequenceId":2
    }
  ]
}
`  
// Sample message
</code></pre>
</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/en/next/client-libraries-dotnet"><span class="arrow-prev">← </span><span>C#</span></a><a class="docs-next button" href="/docs/en/next/admin-api-overview"><span>Overview</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#connection">Connection</a></li><li><a href="#producer">Producer</a><ul class="toc-headings"><li><a href="#message">Message</a></li><li><a href="#schema">Schema</a></li><li><a href="#example">Example</a></li></ul></li></ul></nav></div><footer class="nav-footer" id="footer"><section class="copyright">Copyright © 2022 The Apache Software Foundation. All Rights Reserved. Apache, Apache Pulsar and the Apache feather logo are trademarks of The Apache Software Foundation.</section><span><script>
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