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<div class="section" id="module-aria.orchestrator.workflows.api">
<span id="aria-orchestrator-workflows-api"></span><h1><a class="reference internal" href="#module-aria.orchestrator.workflows.api" title="aria.orchestrator.workflows.api"><code class="xref py py-mod docutils literal"><span class="pre">aria.orchestrator.workflows.api</span></code></a><a class="headerlink" href="#module-aria.orchestrator.workflows.api" title="Permalink to this headline"></a></h1>
<p>Workflow API.</p>
<div class="section" id="module-aria.orchestrator.workflows.api.task_graph">
<span id="aria-orchestrator-workflows-api-task-graph"></span><h2><a class="reference internal" href="#module-aria.orchestrator.workflows.api.task_graph" title="aria.orchestrator.workflows.api.task_graph"><code class="xref py py-mod docutils literal"><span class="pre">aria.orchestrator.workflows.api.task_graph</span></code></a><a class="headerlink" href="#module-aria.orchestrator.workflows.api.task_graph" title="Permalink to this headline"></a></h2>
<p>Task graph.</p>
<dl class="class">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph">
<em class="property">class </em><code class="descclassname">aria.orchestrator.workflows.api.task_graph.</code><code class="descname">TaskGraph</code><span class="sig-paren">(</span><em>name</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph" title="Permalink to this definition"></a></dt>
<dd><p>Bases: <a class="reference external" href="https://docs.python.org/2.7/library/functions.html#object" title="(in Python v2.7)"><code class="xref py py-class docutils literal"><span class="pre">object</span></code></a></p>
<p>Task graph builder.</p>
<dl class="method">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph.add_dependency">
<code class="descname">add_dependency</code><span class="sig-paren">(</span><em>dependent</em>, <em>dependency</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph.add_dependency" title="Permalink to this definition"></a></dt>
<dd><p>Adds a dependency for one item (task, sequence or parallel) on another.</p>
<p>The dependent will only be executed after the dependency terminates. If either of the items
is either a sequence or a parallel, multiple dependencies may be added.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>dependent</strong> – dependent (task, sequence or parallel)</li>
<li><strong>dependency</strong> – dependency (task, sequence or parallel)</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first"><code class="docutils literal"><span class="pre">True</span></code> if the dependency between the two hadn’t already existed, otherwise
<code class="docutils literal"><span class="pre">False</span></code></p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first"><a class="reference external" href="https://docs.python.org/2.7/library/functions.html#bool" title="(in Python v2.7)">bool</a></p>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><p class="first last"><a class="reference internal" href="#aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError" title="aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError"><strong>TaskNotInGraphError</strong></a> – if either the
dependent or dependency are tasks which are not in the graph</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph.add_tasks">
<code class="descname">add_tasks</code><span class="sig-paren">(</span><em>task</em>, <em>*tasks</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph.add_tasks" title="Permalink to this definition"></a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph.get_dependencies">
<code class="descname">get_dependencies</code><span class="sig-paren">(</span><em>dependent_task</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph.get_dependencies" title="Permalink to this definition"></a></dt>
<dd><p>Iterates over the task’s dependencies.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>dependent_task</strong> – task whose dependencies are requested</td>
</tr>
<tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><a class="reference internal" href="#aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError" title="aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError"><strong>TaskNotInGraphError</strong></a> – if
<code class="docutils literal"><span class="pre">dependent_task</span></code> is not in the graph</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph.get_dependents">
<code class="descname">get_dependents</code><span class="sig-paren">(</span><em>dependency_task</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph.get_dependents" title="Permalink to this definition"></a></dt>
<dd><p>Iterates over the task’s dependents.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>dependency_task</strong> – task whose dependents are requested</td>
</tr>
<tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><a class="reference internal" href="#aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError" title="aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError"><strong>TaskNotInGraphError</strong></a> – if
<code class="docutils literal"><span class="pre">dependency_task</span></code> is not in the graph</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph.get_task">
<code class="descname">get_task</code><span class="sig-paren">(</span><em>task_id</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph.get_task" title="Permalink to this definition"></a></dt>
<dd><p>Get a task instance that’s been inserted to the graph by the task’s ID.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>task_id</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#basestring" title="(in Python v2.7)"><em>basestring</em></a>) – task ID</td>
</tr>
<tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><a class="reference internal" href="#aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError" title="aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError"><strong>TaskNotInGraphError</strong></a> – if no task found in
the graph with the given ID</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph.has_dependency">
<code class="descname">has_dependency</code><span class="sig-paren">(</span><em>dependent</em>, <em>dependency</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph.has_dependency" title="Permalink to this definition"></a></dt>
<dd><p>Checks whether one item (task, sequence or parallel) depends on another.</p>
<p>Note that if either of the items is either a sequence or a parallel, and some of the
dependencies exist in the graph but not all of them, this method will return <code class="docutils literal"><span class="pre">False</span></code>.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>dependent</strong> – dependent (task, sequence or parallel)</li>
<li><strong>dependency</strong> – dependency (task, sequence or parallel)</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first"><code class="docutils literal"><span class="pre">True</span></code> if the dependency between the two exists, otherwise <code class="docutils literal"><span class="pre">False</span></code></p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first"><a class="reference external" href="https://docs.python.org/2.7/library/functions.html#bool" title="(in Python v2.7)">bool</a></p>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><p class="first last"><a class="reference internal" href="#aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError" title="aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError"><strong>TaskNotInGraphError</strong></a> – if either the
dependent or dependency are tasks which are not in the graph</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph.has_tasks">
<code class="descname">has_tasks</code><span class="sig-paren">(</span><em>task</em>, <em>*tasks</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph.has_tasks" title="Permalink to this definition"></a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph.id">
<code class="descname">id</code><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph.id" title="Permalink to this definition"></a></dt>
<dd><p>ID of the graph</p>
</dd></dl>
<dl class="method">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph.remove_dependency">
<code class="descname">remove_dependency</code><span class="sig-paren">(</span><em>dependent</em>, <em>dependency</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph.remove_dependency" title="Permalink to this definition"></a></dt>
<dd><p>Removes a dependency for one item (task, sequence or parallel) on another.</p>
<p>Note that if either of the items is either a sequence or a parallel, and some of the
dependencies exist in the graph but not all of them, this method will not remove any of the
dependencies and return <code class="docutils literal"><span class="pre">False</span></code>.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>dependent</strong> – dependent (task, sequence or parallel)</li>
<li><strong>dependency</strong> – dependency (task, sequence or parallel)</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first"><code class="docutils literal"><span class="pre">False</span></code> if the dependency between the two hadn’t existed, otherwise <code class="docutils literal"><span class="pre">True</span></code></p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first"><a class="reference external" href="https://docs.python.org/2.7/library/functions.html#bool" title="(in Python v2.7)">bool</a></p>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><p class="first last"><a class="reference internal" href="#aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError" title="aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError"><strong>TaskNotInGraphError</strong></a> – if either the
dependent or dependency are tasks which are not in the graph</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph.remove_tasks">
<code class="descname">remove_tasks</code><span class="sig-paren">(</span><em>task</em>, <em>*tasks</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph.remove_tasks" title="Permalink to this definition"></a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph.sequence">
<code class="descname">sequence</code><span class="sig-paren">(</span><em>task</em>, <em>*tasks</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph.sequence" title="Permalink to this definition"></a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph.tasks">
<code class="descname">tasks</code><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph.tasks" title="Permalink to this definition"></a></dt>
<dd><p>Iterator over tasks in the graph.</p>
</dd></dl>
<dl class="method">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskGraph.topological_order">
<code class="descname">topological_order</code><span class="sig-paren">(</span><em>reverse=False</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskGraph.topological_order" title="Permalink to this definition"></a></dt>
<dd><p>Topological sort of the graph.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>reverse</strong> – whether to reverse the sort</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">list which represents the topological sort</td>
</tr>
</tbody>
</table>
</dd></dl>
</dd></dl>
<dl class="exception">
<dt id="aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError">
<em class="property">exception </em><code class="descclassname">aria.orchestrator.workflows.api.task_graph.</code><code class="descname">TaskNotInGraphError</code><a class="headerlink" href="#aria.orchestrator.workflows.api.task_graph.TaskNotInGraphError" title="Permalink to this definition"></a></dt>
<dd><p>Bases: <a class="reference external" href="https://docs.python.org/2.7/library/exceptions.html#exceptions.Exception" title="(in Python v2.7)"><code class="xref py py-class docutils literal"><span class="pre">exceptions.Exception</span></code></a></p>
<p>An error representing a scenario where a given task is not in the graph as expected.</p>
</dd></dl>
</div>
<div class="section" id="module-aria.orchestrator.workflows.api.task">
<span id="aria-orchestrator-workflows-api-task"></span><h2><a class="reference internal" href="#module-aria.orchestrator.workflows.api.task" title="aria.orchestrator.workflows.api.task"><code class="xref py py-mod docutils literal"><span class="pre">aria.orchestrator.workflows.api.task</span></code></a><a class="headerlink" href="#module-aria.orchestrator.workflows.api.task" title="Permalink to this headline"></a></h2>
<p>Provides the tasks to be entered into the task graph</p>
<dl class="class">
<dt id="aria.orchestrator.workflows.api.task.BaseTask">
<em class="property">class </em><code class="descclassname">aria.orchestrator.workflows.api.task.</code><code class="descname">BaseTask</code><span class="sig-paren">(</span><em>ctx=None</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task.BaseTask" title="Permalink to this definition"></a></dt>
<dd><p>Bases: <a class="reference external" href="https://docs.python.org/2.7/library/functions.html#object" title="(in Python v2.7)"><code class="xref py py-class docutils literal"><span class="pre">object</span></code></a></p>
<p>Base class for tasks.</p>
<dl class="attribute">
<dt id="aria.orchestrator.workflows.api.task.BaseTask.id">
<code class="descname">id</code><a class="headerlink" href="#aria.orchestrator.workflows.api.task.BaseTask.id" title="Permalink to this definition"></a></dt>
<dd><p>UUID4 ID.</p>
</dd></dl>
<dl class="attribute">
<dt id="aria.orchestrator.workflows.api.task.BaseTask.workflow_context">
<code class="descname">workflow_context</code><a class="headerlink" href="#aria.orchestrator.workflows.api.task.BaseTask.workflow_context" title="Permalink to this definition"></a></dt>
<dd><p>Context of the current workflow.</p>
</dd></dl>
</dd></dl>
<dl class="class">
<dt id="aria.orchestrator.workflows.api.task.OperationTask">
<em class="property">class </em><code class="descclassname">aria.orchestrator.workflows.api.task.</code><code class="descname">OperationTask</code><span class="sig-paren">(</span><em>actor</em>, <em>interface_name</em>, <em>operation_name</em>, <em>arguments=None</em>, <em>ignore_failure=None</em>, <em>max_attempts=None</em>, <em>retry_interval=None</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task.OperationTask" title="Permalink to this definition"></a></dt>
<dd><p>Bases: <a class="reference internal" href="#aria.orchestrator.workflows.api.task.BaseTask" title="aria.orchestrator.workflows.api.task.BaseTask"><code class="xref py py-class docutils literal"><span class="pre">aria.orchestrator.workflows.api.task.BaseTask</span></code></a></p>
<p>Executes an operation.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Variables:</th><td class="field-body"><ul class="first simple">
<li><strong>name</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#basestring" title="(in Python v2.7)"><em>basestring</em></a>) – formatted name (includes actor type, actor name, and interface/operation names)</li>
<li><strong>actor</strong> (<a class="reference internal" href="aria.modeling.models.html#aria.modeling.models.Node" title="aria.modeling.models.Node"><code class="xref py py-class docutils literal"><span class="pre">Node</span></code></a> or
<a class="reference internal" href="aria.modeling.models.html#aria.modeling.models.Relationship" title="aria.modeling.models.Relationship"><code class="xref py py-class docutils literal"><span class="pre">Relationship</span></code></a>) – node or relationship</li>
<li><strong>interface_name</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#basestring" title="(in Python v2.7)"><em>basestring</em></a>) – interface name on actor</li>
<li><strong>operation_name</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#basestring" title="(in Python v2.7)"><em>basestring</em></a>) – operation name on interface</li>
<li><strong>plugin</strong> (<a class="reference internal" href="aria.modeling.models.html#aria.modeling.models.Plugin" title="aria.modeling.models.Plugin"><code class="xref py py-class docutils literal"><span class="pre">Plugin</span></code></a>) – plugin (or None for default plugin)</li>
<li><strong>function</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#basestring" title="(in Python v2.7)"><em>basestring</em></a>) – path to Python function</li>
<li><strong>arguments</strong> ({<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#basestring" title="(in Python v2.7)"><code class="xref py py-obj docutils literal"><span class="pre">basestring</span></code></a>: <a class="reference internal" href="aria.modeling.models.html#aria.modeling.models.Argument" title="aria.modeling.models.Argument"><code class="xref py py-class docutils literal"><span class="pre">Argument</span></code></a>}) – arguments to send to Python function</li>
<li><strong>ignore_failure</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#bool" title="(in Python v2.7)"><em>bool</em></a>) – whether to ignore failures</li>
<li><strong>max_attempts</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#int" title="(in Python v2.7)"><em>int</em></a>) – maximum number of attempts allowed in case of failure</li>
<li><strong>retry_interval</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#float" title="(in Python v2.7)"><em>float</em></a>) – interval between retries (in seconds)</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>actor</strong> (<a class="reference internal" href="aria.modeling.models.html#aria.modeling.models.Node" title="aria.modeling.models.Node"><code class="xref py py-class docutils literal"><span class="pre">Node</span></code></a> or
<a class="reference internal" href="aria.modeling.models.html#aria.modeling.models.Relationship" title="aria.modeling.models.Relationship"><code class="xref py py-class docutils literal"><span class="pre">Relationship</span></code></a>) – node or relationship</li>
<li><strong>interface_name</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#basestring" title="(in Python v2.7)"><em>basestring</em></a>) – interface name on actor</li>
<li><strong>operation_name</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#basestring" title="(in Python v2.7)"><em>basestring</em></a>) – operation name on interface</li>
<li><strong>arguments</strong> ({<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#basestring" title="(in Python v2.7)"><code class="xref py py-obj docutils literal"><span class="pre">basestring</span></code></a>: object}) – override argument values</li>
<li><strong>ignore_failure</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#bool" title="(in Python v2.7)"><em>bool</em></a>) – override whether to ignore failures</li>
<li><strong>max_attempts</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#int" title="(in Python v2.7)"><em>int</em></a>) – override maximum number of attempts allowed in case of failure</li>
<li><strong>retry_interval</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#float" title="(in Python v2.7)"><em>float</em></a>) – override interval between retries (in seconds)</li>
</ul>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Raises:</th><td class="field-body"><p class="first last"><a class="reference internal" href="aria.orchestrator.workflows.html#aria.orchestrator.workflows.exceptions.OperationNotFoundException" title="aria.orchestrator.workflows.exceptions.OperationNotFoundException"><strong>OperationNotFoundException</strong></a> – if
<code class="docutils literal"><span class="pre">interface_name</span></code> and <code class="docutils literal"><span class="pre">operation_name</span></code> do not refer to an operation on the actor</p>
</td>
</tr>
</tbody>
</table>
<dl class="attribute">
<dt id="aria.orchestrator.workflows.api.task.OperationTask.NAME_FORMAT">
<code class="descname">NAME_FORMAT</code><em class="property"> = '{interface}:{operation}&#64;{type}:{name}'</em><a class="headerlink" href="#aria.orchestrator.workflows.api.task.OperationTask.NAME_FORMAT" title="Permalink to this definition"></a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="aria.orchestrator.workflows.api.task.StubTask">
<em class="property">class </em><code class="descclassname">aria.orchestrator.workflows.api.task.</code><code class="descname">StubTask</code><span class="sig-paren">(</span><em>ctx=None</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task.StubTask" title="Permalink to this definition"></a></dt>
<dd><p>Bases: <a class="reference internal" href="#aria.orchestrator.workflows.api.task.BaseTask" title="aria.orchestrator.workflows.api.task.BaseTask"><code class="xref py py-class docutils literal"><span class="pre">aria.orchestrator.workflows.api.task.BaseTask</span></code></a></p>
<p>Enables creating empty tasks.</p>
</dd></dl>
<dl class="class">
<dt id="aria.orchestrator.workflows.api.task.WorkflowTask">
<em class="property">class </em><code class="descclassname">aria.orchestrator.workflows.api.task.</code><code class="descname">WorkflowTask</code><span class="sig-paren">(</span><em>workflow_func</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task.WorkflowTask" title="Permalink to this definition"></a></dt>
<dd><p>Bases: <a class="reference internal" href="#aria.orchestrator.workflows.api.task.BaseTask" title="aria.orchestrator.workflows.api.task.BaseTask"><code class="xref py py-class docutils literal"><span class="pre">aria.orchestrator.workflows.api.task.BaseTask</span></code></a></p>
<p>Executes a complete workflow.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><strong>workflow_func</strong> – function to run</li>
<li><strong>kwargs</strong> – kwargs that would be passed to the workflow_func</li>
</ul>
</td>
</tr>
</tbody>
</table>
<dl class="attribute">
<dt id="aria.orchestrator.workflows.api.task.WorkflowTask.graph">
<code class="descname">graph</code><a class="headerlink" href="#aria.orchestrator.workflows.api.task.WorkflowTask.graph" title="Permalink to this definition"></a></dt>
<dd><p>Graph constructed by the sub workflow.</p>
</dd></dl>
</dd></dl>
<dl class="function">
<dt id="aria.orchestrator.workflows.api.task.create_relationship_tasks">
<code class="descclassname">aria.orchestrator.workflows.api.task.</code><code class="descname">create_relationship_tasks</code><span class="sig-paren">(</span><em>relationship</em>, <em>interface_name</em>, <em>source_operation_name=None</em>, <em>target_operation_name=None</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task.create_relationship_tasks" title="Permalink to this definition"></a></dt>
<dd><p>Creates a relationship task (source and target).</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><strong>relationship</strong> – relationship instance itself</li>
<li><strong>source_operation_name</strong></li>
<li><strong>target_operation_name</strong></li>
</ul>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="function">
<dt id="aria.orchestrator.workflows.api.task.create_relationships_tasks">
<code class="descclassname">aria.orchestrator.workflows.api.task.</code><code class="descname">create_relationships_tasks</code><span class="sig-paren">(</span><em>node</em>, <em>interface_name</em>, <em>source_operation_name=None</em>, <em>target_operation_name=None</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task.create_relationships_tasks" title="Permalink to this definition"></a></dt>
<dd><p>Creates a relationship task (source and target) for all of a node relationships.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><strong>source_operation_name</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#basestring" title="(in Python v2.7)"><em>basestring</em></a>) – relationship operation name</li>
<li><strong>interface_name</strong> (<a class="reference external" href="https://docs.python.org/2.7/library/functions.html#basestring" title="(in Python v2.7)"><em>basestring</em></a>) – name of the interface</li>
<li><strong>source_operation_name</strong></li>
<li><strong>target_operation_name</strong></li>
<li><strong>node</strong> – source node</li>
</ul>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="function">
<dt id="aria.orchestrator.workflows.api.task.create_task">
<code class="descclassname">aria.orchestrator.workflows.api.task.</code><code class="descname">create_task</code><span class="sig-paren">(</span><em>actor</em>, <em>interface_name</em>, <em>operation_name</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task.create_task" title="Permalink to this definition"></a></dt>
<dd><p>Helper function that enables safe creation of <a class="reference internal" href="#aria.orchestrator.workflows.api.task.OperationTask" title="aria.orchestrator.workflows.api.task.OperationTask"><code class="xref py py-class docutils literal"><span class="pre">OperationTask</span></code></a>. If the supplied interface
or operation do not exist, <code class="docutils literal"><span class="pre">None</span></code> is returned.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>actor</strong> – actor for this task</li>
<li><strong>interface_name</strong> – name of the interface</li>
<li><strong>operation_name</strong> – name of the operation</li>
<li><strong>kwargs</strong> – any additional kwargs to be passed to the OperationTask</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">OperationTask or None (if the interface/operation does not exists)</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="function">
<dt id="aria.orchestrator.workflows.api.task.has_operation">
<code class="descclassname">aria.orchestrator.workflows.api.task.</code><code class="descname">has_operation</code><span class="sig-paren">(</span><em>actor</em>, <em>interface_name</em>, <em>operation_name</em><span class="sig-paren">)</span><a class="headerlink" href="#aria.orchestrator.workflows.api.task.has_operation" title="Permalink to this definition"></a></dt>
<dd></dd></dl>
</div>
</div>
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