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itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/docs/DeveloperManuals"><span itemprop="name">Developer Manuals</span></a><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Notifications</span><meta itemprop="position" content="2"></li></ul></nav><span class="theme-doc-version-badge badge badge--secondary">Version: Next</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Notifications</h1></header><h2 class="anchor anchorWithStickyNavbar_LWe7" id="configuration">Configuration<a class="hash-link" href="#configuration" title="Direct link to heading"></a></h2><p>If you want to receive a notification on pipeline finished, you need to add the following two keys to the Environment Variables (i.e. the <code>.env</code> file).</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token comment" style="color:#999988;font-style:italic"># .env</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic"># notification request url, e.g.: </span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token assign-left variable" style="color:#36acaa">NOTIFICATION_ENDPOINT</span><span class="token operator" style="color:#393A34">=</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic"># secret is used to calculate signature</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token assign-left variable" style="color:#36acaa">NOTIFICATION_SECRET</span><span class="token operator" style="color:#393A34">=</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><ul><li><code>NOTIFICATION_ENDPOINT</code> The fully qualified URL of your notification receiver.</li><li><code>NOTIFICATION_SECRET</code> Used to sign the request data, allowing you to verify whether the request is sent by a legitimate sender. You can leave this empty if verification is not needed. See <a href="#signature">Signature</a> for the algorithm detail.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="notification-request">Notification Request<a class="hash-link" href="#notification-request" title="Direct link to heading"></a></h2><p>Example of request you would receive</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">POST http://example.com/lake/notify?nouce=3-FDXxIootApWxEVtz&sign=424c2f6159bd9e9828924a53f9911059433dc14328a031e91f9802f062b495d5</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">{</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> "ProjectName": "projectName",</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> "PipelineID": 39,</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> "BeganAt": "2024-09-05T15:08:00.389+08:00",</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> "FinishedAT": "2024-09-05T15:28:00.389+08:00",</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> "Status":"TASK_COMPLETED",</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> "CreatedAt":"2024-09-05T15:08:00.389+08:00",</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> "UpdatedAt":"2024-09-05T15:28:00.785+08:00"</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><ul><li><code>nonce</code>: A unique value to prevent replay attacks.</li><li><code>sign</code>: A signature for verifying the request's authenticity.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="signature">Signature<a class="hash-link" href="#signature" title="Direct link to heading"></a></h2><p>The signature ensures that the request is sent by an authorized sender and has not been tampered with. You should verify the signature before processing the notification. The signature is calculated using the sha256 algorithm.</p><div class="language-go codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-go codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token comment" style="color:#999988;font-style:italic">// calculate checksum</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">sum </span><span class="token operator" style="color:#393A34">:=</span><span class="token plain"> sha256</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#d73a49">Sum256</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">[</span><span class="token punctuation" style="color:#393A34">]</span><span class="token function" style="color:#d73a49">byte</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">requestBody </span><span class="token operator" style="color:#393A34">+</span><span class="token plain"> NOTIFICATION_SECRET </span><span class="token operator" style="color:#393A34">+</span><span class="token plain"> nouce</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">return</span><span class="token plain"> hex</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#d73a49">EncodeToString</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">sum</span><span class="token punctuation" style="color:#393A34">[</span><span class="token punctuation" style="color:#393A34">:</span><span class="token punctuation" style="color:#393A34">]</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a 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