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| <div class="subTitle">org.apache.ignite.maintenance</div> |
| <h2 title="Interface MaintenanceWorkflowCallback" class="title">Interface MaintenanceWorkflowCallback</h2> |
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| <pre>public interface <span class="typeNameLabel">MaintenanceWorkflowCallback</span></pre> |
| <div class="block">Abstraction to decouple interaction between <a href="../../../../org/apache/ignite/maintenance/MaintenanceRegistry.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceRegistry</code></a> |
| and components that may require maintenance. |
| |
| If a component may cause node to enter maintenance mode, it should register this callback |
| in <a href="../../../../org/apache/ignite/maintenance/MaintenanceRegistry.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceRegistry</code></a> using method <a href="../../../../org/apache/ignite/maintenance/MaintenanceRegistry.html#registerWorkflowCallback-java.lang.String-org.apache.ignite.maintenance.MaintenanceWorkflowCallback-"><code>MaintenanceRegistry.registerWorkflowCallback(String, MaintenanceWorkflowCallback)</code></a> |
| |
| <a href="../../../../org/apache/ignite/maintenance/MaintenanceRegistry.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceRegistry</code></a> during its workflow will collect necessary information about maintenance for components |
| without knowing implementation details of the components.</div> |
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| <td class="colFirst"><code>@NotNull <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><span class='angle_bracket'><</span><a href="../../../../org/apache/ignite/maintenance/MaintenanceAction.html" title="interface in org.apache.ignite.maintenance">MaintenanceAction</a><span class='angle_bracket'><</span>?<span class='angle_bracket'>></span><span class='angle_bracket'>></span></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/ignite/maintenance/MaintenanceWorkflowCallback.html#allActions--">allActions</a></span>()</code> |
| <div class="block">Supplies list of <a href="../../../../org/apache/ignite/maintenance/MaintenanceAction.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceAction</code></a>s that user can call to fix maintenance situation for the component or |
| get information about ongoing actions.</div> |
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| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>@Nullable <a href="../../../../org/apache/ignite/maintenance/MaintenanceAction.html" title="interface in org.apache.ignite.maintenance">MaintenanceAction</a><span class='angle_bracket'><</span>?<span class='angle_bracket'>></span></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/ignite/maintenance/MaintenanceWorkflowCallback.html#automaticAction--">automaticAction</a></span>()</code> |
| <div class="block">Component can provide optional <a href="../../../../org/apache/ignite/maintenance/MaintenanceAction.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceAction</code></a> that will be executed automatically |
| by <a href="../../../../org/apache/ignite/maintenance/MaintenanceRegistry.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceRegistry</code></a> when node enters maintenance mode.</div> |
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| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/ignite/maintenance/MaintenanceWorkflowCallback.html#shouldProceedWithMaintenance--">shouldProceedWithMaintenance</a></span>()</code> |
| <div class="block">Called by <a href="../../../../org/apache/ignite/maintenance/MaintenanceRegistry.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceRegistry</code></a> and enables it to check if maintenance is still needed |
| for component that provided this callback.</div> |
| </td> |
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| <h4>shouldProceedWithMaintenance</h4> |
| <pre>boolean shouldProceedWithMaintenance()</pre> |
| <div class="block">Called by <a href="../../../../org/apache/ignite/maintenance/MaintenanceRegistry.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceRegistry</code></a> and enables it to check if maintenance is still needed |
| for component that provided this callback. |
| |
| User may fix maintenance situation by hand when node was down thus before going to maintenance mode |
| we should be able to check if it is still necessary.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>True</code> if maintenance is still needed for the component.</dd> |
| </dl> |
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| <h4>allActions</h4> |
| <pre>@NotNull |
| @NotNull <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><span class='angle_bracket'><</span><a href="../../../../org/apache/ignite/maintenance/MaintenanceAction.html" title="interface in org.apache.ignite.maintenance">MaintenanceAction</a><span class='angle_bracket'><</span>?<span class='angle_bracket'>></span><span class='angle_bracket'>></span> allActions()</pre> |
| <div class="block">Supplies list of <a href="../../../../org/apache/ignite/maintenance/MaintenanceAction.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceAction</code></a>s that user can call to fix maintenance situation for the component or |
| get information about ongoing actions. Should not be null or empty.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Not null and non-empty <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util"><code>List</code></a> of <a href="../../../../org/apache/ignite/maintenance/MaintenanceAction.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceAction</code></a>.</dd> |
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| <h4>automaticAction</h4> |
| <pre>@Nullable |
| @Nullable <a href="../../../../org/apache/ignite/maintenance/MaintenanceAction.html" title="interface in org.apache.ignite.maintenance">MaintenanceAction</a><span class='angle_bracket'><</span>?<span class='angle_bracket'>></span> automaticAction()</pre> |
| <div class="block">Component can provide optional <a href="../../../../org/apache/ignite/maintenance/MaintenanceAction.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceAction</code></a> that will be executed automatically |
| by <a href="../../../../org/apache/ignite/maintenance/MaintenanceRegistry.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceRegistry</code></a> when node enters maintenance mode. |
| |
| If no automatic actions are provided <a href="../../../../org/apache/ignite/maintenance/MaintenanceRegistry.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceRegistry</code></a> will wait for user |
| to trigger <a href="../../../../org/apache/ignite/maintenance/MaintenanceAction.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceAction</code></a> with logic to fix the maintenance situation.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><a href="../../../../org/apache/ignite/maintenance/MaintenanceAction.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceAction</code></a> for automatic execution or null if maintenance situation |
| should not be fixed automatically.</dd> |
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