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| <h1> |
| <a href="/2022/01/31/stateful-functions-3.2.0-release-announcement/">Stateful Functions 3.2.0 Release Announcement</a> |
| </h1> |
| |
| |
| |
| January 31, 2022 - |
| |
| |
| |
| Till Rohrmann |
| |
| <a href="https://twitter.com/stsffap">(@stsffap)</a> |
| |
| |
| Igal Shilman |
| |
| <a href="https://twitter.com/IgalShilman">(@IgalShilman)</a> |
| |
| |
| |
| |
| <p><p>Stateful Functions is a cross-platform stack for building Stateful Serverless applications, making it radically simpler to develop scalable, consistent, and elastic distributed applications. |
| This new release brings various improvements to the StateFun runtime, a leaner way to specify StateFun module components, and a brand new JavaScript SDK!</p> |
| <p>The binary distribution and source artifacts are now available on the updated <a href="https://flink.apache.org/downloads.html">Downloads</a> |
| page of the Flink website, and the most recent Java SDK, Python SDK,, GoLang SDK and JavaScript SDK distributions are available on <a href="https://search.maven.org/artifact/org.apache.flink/statefun-sdk-java/3.2.0/jar">Maven</a>, <a href="https://pypi.org/project/apache-flink-statefun/">PyPI</a>, <a href="https://github.com/apache/flink-statefun/tree/statefun-sdk-go/v3.2.0">Github</a>, and <a href="https://www.npmjs.com/package/apache-flink-statefun">npm</a> respectively. |
| You can also find official StateFun Docker images of the new version on <a href="https://hub.docker.com/r/apache/flink-statefun">Dockerhub</a>.</p> |
| <p>For more details, check the complete <a href="https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12315522&version=12350540">release changelog</a> |
| and the <a href="//nightlies.apache.org/flink/flink-statefun-docs-release-3.2/">updated documentation</a>. |
| We encourage you to download the release and share your feedback with the community through the <a href="https://flink.apache.org/community.html#mailing-lists">Flink mailing lists</a> |
| or <a href="https://issues.apache.org/jira/browse/">JIRA</a>!</p> |
| <h2 id="new-features"> |
| New Features |
| <a class="anchor" href="#new-features">#</a> |
| </h2> |
| <h3 id="a-brand-new-javascript-sdk-for-nodejs"> |
| A brand new JavaScript SDK for NodeJS |
| <a class="anchor" href="#a-brand-new-javascript-sdk-for-nodejs">#</a> |
| </h3> |
| <p>Stateful Functions provides a unified model for building stateful applications across various programming languages and deployment environments. |
| The community is thrilled to release an official JavaScript SDK as part of the 3.2.0 release.</p> |
| <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-js" data-lang="js"><span class="line"><span class="cl"><span class="kr">const</span> <span class="nx">http</span> <span class="o">=</span> <span class="nx">require</span><span class="p">(</span><span class="s2">"http"</span><span class="p">);</span> |
| </span></span><span class="line"><span class="cl"><span class="kr">const</span> <span class="p">{</span><span class="nx">messageBuilder</span><span class="p">,</span> <span class="nx">StateFun</span><span class="p">,</span> <span class="nx">Context</span><span class="p">}</span> <span class="o">=</span> <span class="nx">require</span><span class="p">(</span><span class="s2">"apache-flink-statefun"</span><span class="p">);</span> |
| </span></span><span class="line"><span class="cl"> |
| </span></span><span class="line"><span class="cl"><span class="kd">let</span> <span class="nx">statefun</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">StateFun</span><span class="p">();</span> |
| </span></span><span class="line"><span class="cl"><span class="nx">statefun</span><span class="p">.</span><span class="nx">bind</span><span class="p">({</span> |
| </span></span><span class="line"><span class="cl"> <span class="nx">typename</span><span class="o">:</span> <span class="s2">"com.example.fns/greeter"</span><span class="p">,</span> |
| </span></span><span class="line"><span class="cl"> <span class="nx">fn</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">message</span><span class="p">)</span> <span class="p">{</span> |
| </span></span><span class="line"><span class="cl"> <span class="kr">const</span> <span class="nx">name</span> <span class="o">=</span> <span class="nx">message</span><span class="p">.</span><span class="nx">asString</span><span class="p">();</span> |
| </span></span><span class="line"><span class="cl"> <span class="kd">let</span> <span class="nx">seen</span> <span class="o">=</span> <span class="nx">context</span><span class="p">.</span><span class="nx">storage</span><span class="p">.</span><span class="nx">seen</span> <span class="o">||</span> <span class="mi">0</span><span class="p">;</span> |
| </span></span><span class="line"><span class="cl"> <span class="nx">seen</span> <span class="o">=</span> <span class="nx">seen</span> <span class="o">+</span> <span class="mi">1</span><span class="p">;</span> |
| </span></span><span class="line"><span class="cl"> <span class="nx">context</span><span class="p">.</span><span class="nx">storage</span><span class="p">.</span><span class="nx">seen</span> <span class="o">=</span> <span class="nx">seen</span><span class="p">;</span> |
| </span></span><span class="line"><span class="cl"> |
| </span></span><span class="line"><span class="cl"> <span class="nx">context</span><span class="p">.</span><span class="nx">send</span><span class="p">(</span> |
| </span></span><span class="line"><span class="cl"> <span class="nx">messageBuilder</span><span class="p">({</span><span class="nx">typename</span><span class="o">:</span> <span class="s1">'com.example.fns/inbox'</span><span class="p">,</span> |
| </span></span><span class="line"><span class="cl"> <span class="nx">id</span><span class="o">:</span> <span class="nx">name</span><span class="p">,</span> |
| </span></span><span class="line"><span class="cl"> <span class="nx">value</span><span class="o">:</span> <span class="sb">`"Hello </span><span class="si">${</span><span class="nx">name</span><span class="si">}</span><span class="sb"> for the </span><span class="si">${</span><span class="nx">seen</span><span class="si">}</span><span class="sb">th time!"`</span><span class="p">})</span> |
| </span></span><span class="line"><span class="cl"> <span class="p">);</span> |
| </span></span><span class="line"><span class="cl"> <span class="p">},</span> |
| </span></span><span class="line"><span class="cl"> <span class="nx">specs</span><span class="o">:</span> <span class="p">[{</span> |
| </span></span><span class="line"><span class="cl"> <span class="nx">name</span><span class="o">:</span> <span class="s2">"seen"</span><span class="p">,</span> |
| </span></span><span class="line"><span class="cl"> <span class="nx">type</span><span class="o">:</span> <span class="nx">StateFun</span><span class="p">.</span><span class="nx">intType</span><span class="p">(),</span> |
| </span></span><span class="line"><span class="cl"> <span class="p">}]</span> |
| </span></span><span class="line"><span class="cl"><span class="p">});</span> |
| </span></span><span class="line"><span class="cl"> |
| </span></span><span class="line"><span class="cl"><span class="nx">http</span><span class="p">.</span><span class="nx">createServer</span><span class="p">(</span><span class="nx">statefun</span><span class="p">.</span><span class="nx">handler</span><span class="p">()).</span><span class="nx">listen</span><span class="p">(</span><span class="mi">8000</span><span class="p">);</span> |
| </span></span></code></pre></div><p>As with the Python, Java and Go SDKs, the JavaScript SDK includes:</p> |
| <ul> |
| <li>An address scoped storage acting as a key-value store for a particular address.</li> |
| <li>A unified cross-language way to send, receive and store values across languages.</li> |
| <li>Dynamic <code>ValueSpec</code> to describe the state name, type, and possibly expiration configuration at runtime.</li> |
| </ul> |
| <p>You can get started by adding the SDK to your project.</p> |
| <p><code>npm install apache-flink-statefun@3.2.0</code></p> |
| <p>For a detailed SDK tutorial, we would like to encourage you to visit:</p> |
| <ul> |
| <li><a href="//nightlies.apache.org/flink/flink-statefun-docs-release-3.2/docs/sdk/js/">JavaScript SDK Documentation</a></li> |
| </ul> |
| <h3 id="support-different-remote-functions-module-names"> |
| Support different remote functions module names |
| <a class="anchor" href="#support-different-remote-functions-module-names">#</a> |
| </h3> |
| <p>With the newly introduced configuration option <code>statefun.remote.module-name</code>, it is possible to override the default remote module file name (<code>module.yaml</code>).</p> |
| <p>To provide a different name, for example <code>prod.yaml</code> that is located at <code>/flink/usrlib/prod.yaml</code>, one can add the following to ones <code>flink-conf.yaml</code>:</p> |
| <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">statefun.remote.module-name: /flink/usrlib/prod.yaml |
| </span></span></code></pre></div><p>For more information see <a href="https://issues.apache.org/jira/browse/FLINK-25308">FLINK-25308</a>.</p> |
| <h3 id="allow-creating-custom-metrics"> |
| Allow creating custom metrics |
| <a class="anchor" href="#allow-creating-custom-metrics">#</a> |
| </h3> |
| <p>The embedded SDK now supports registering custom counters. |
| For more information see <a href="https://issues.apache.org/jira/browse/FLINK-22533">FLINK-22533</a>.</p> |
| <h3 id="upgraded-flink-dependency-to-1143"> |
| Upgraded Flink dependency to 1.14.3 |
| <a class="anchor" href="#upgraded-flink-dependency-to-1143">#</a> |
| </h3> |
| <p>Stateful Functions 3.2.0 runtime uses Flink 1.14.3 underneath. |
| This means that Stateful Functions benefits from the latest improvements and stabilisations that went into Flink. |
| For more information see <a href="https://flink.apache.org/news/2022/01/17/release-1.14.3.html">Flink’s release announcement</a>.</p> |
| <h2 id="release-notes"> |
| Release Notes |
| <a class="anchor" href="#release-notes">#</a> |
| </h2> |
| <p>Please review the <a href="https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12315522&version=12350540">release notes</a> |
| for a detailed list of changes and new features if you plan to upgrade your setup to Stateful Functions 3.2.0.</p> |
| <h2 id="list-of-contributors"> |
| List of Contributors |
| <a class="anchor" href="#list-of-contributors">#</a> |
| </h2> |
| <p>Seth Wiesman, Igal Shilman, Till Rohrmann, Stephan Ewen, Tzu-Li (Gordon) Tai, Ingo Bürk, Evans Ye, neoXfire, Galen Warren</p> |
| <p>If you’d like to get involved, we’re always <a href="https://github.com/apache/flink-statefun#contributing">looking for new contributors</a>.</p> |
| </p> |
| </article> |
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