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-  <div class="section" id="module-aria.orchestrator.execution_plugin.ssh">
-<span id="aria-orchestrator-execution-plugin-ssh"></span><h1><a 
class="reference internal" 
href="#module-aria.orchestrator.execution_plugin.ssh" 
title="aria.orchestrator.execution_plugin.ssh"><code class="xref py py-mod 
docutils literal"><span 
class="pre">aria.orchestrator.execution_plugin.ssh</span></code></a><a 
class="headerlink" href="#module-aria.orchestrator.execution_plugin.ssh" 
title="Permalink to this headline">¶</a></h1>
-<p>Remote execution of operations over SSH.</p>
-<div class="section" 
id="module-aria.orchestrator.execution_plugin.ssh.operations">
-<span id="aria-orchestrator-execution-plugin-ssh-operations"></span><h2><a 
class="reference internal" 
href="#module-aria.orchestrator.execution_plugin.ssh.operations" 
title="aria.orchestrator.execution_plugin.ssh.operations"><code class="xref py 
py-mod docutils literal"><span 
class="pre">aria.orchestrator.execution_plugin.ssh.operations</span></code></a><a
 class="headerlink" 
href="#module-aria.orchestrator.execution_plugin.ssh.operations" 
title="Permalink to this headline">¶</a></h2>
-<p>Utilities for running commands remotely over SSH.</p>
-<dl class="function">
-<dt id="aria.orchestrator.execution_plugin.ssh.operations.run_commands">
-<code 
class="descclassname">aria.orchestrator.execution_plugin.ssh.operations.</code><code
 class="descname">run_commands</code><span 
class="sig-paren">(</span><em>ctx</em>, <em>commands</em>, <em>fabric_env</em>, 
<em>use_sudo</em>, <em>hide_output</em>, <em>**_</em><span 
class="sig-paren">)</span><a class="headerlink" 
href="#aria.orchestrator.execution_plugin.ssh.operations.run_commands" 
title="Permalink to this definition">¶</a></dt>
-<dd><p>Runs the provider ‘commands’ in sequence</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>commands</strong> – a list of commands to run</li>
-<li><strong>fabric_env</strong> – fabric configuration</li>
-</ul>
-</td>
-</tr>
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-<dl class="function">
-<dt id="aria.orchestrator.execution_plugin.ssh.operations.run_script">
-<code 
class="descclassname">aria.orchestrator.execution_plugin.ssh.operations.</code><code
 class="descname">run_script</code><span 
class="sig-paren">(</span><em>ctx</em>, <em>script_path</em>, 
<em>fabric_env</em>, <em>process</em>, <em>use_sudo</em>, <em>hide_output</em>, 
<em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" 
href="#aria.orchestrator.execution_plugin.ssh.operations.run_script" 
title="Permalink to this definition">¶</a></dt>
-<dd></dd></dl>
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-<div class="section" id="module-aria.orchestrator.execution_plugin.ssh.tunnel">
-<span id="aria-orchestrator-execution-plugin-ssh-tunnel"></span><h2><a 
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title="aria.orchestrator.execution_plugin.ssh.tunnel"><code class="xref py 
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-<code 
class="descclassname">aria.orchestrator.execution_plugin.ssh.tunnel.</code><code
 class="descname">remote</code><span class="sig-paren">(</span><em>*args</em>, 
<em>**kwds</em><span class="sig-paren">)</span><a class="headerlink" 
href="#aria.orchestrator.execution_plugin.ssh.tunnel.remote" title="Permalink 
to this definition">¶</a></dt>
-<dd><p>Create a tunnel forwarding a locally-visible port to the remote 
target.</p>
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-  <div class="section" id="module-aria.orchestrator">
-<span id="aria-orchestrator"></span><h1><a class="reference internal" 
href="#module-aria.orchestrator" title="aria.orchestrator"><code class="xref py 
py-mod docutils literal"><span 
class="pre">aria.orchestrator</span></code></a><a class="headerlink" 
href="#module-aria.orchestrator" title="Permalink to this headline">¶</a></h1>
-<p>Orchestrator package.</p>
-<div class="section" id="module-aria.orchestrator.decorators">
-<span id="aria-orchestrator-decorators"></span><h2><a class="reference 
internal" href="#module-aria.orchestrator.decorators" 
title="aria.orchestrator.decorators"><code class="xref py py-mod docutils 
literal"><span class="pre">aria.orchestrator.decorators</span></code></a><a 
class="headerlink" href="#module-aria.orchestrator.decorators" title="Permalink 
to this headline">¶</a></h2>
-<p>Workflow and operation decorators.</p>
-<dl class="function">
-<dt id="aria.orchestrator.decorators.operation">
-<code class="descclassname">aria.orchestrator.decorators.</code><code 
class="descname">operation</code><span 
class="sig-paren">(</span><em>func=None</em>, <em>toolbelt=False</em>, 
<em>suffix_template=''</em>, <em>logging_handlers=None</em><span 
class="sig-paren">)</span><a class="headerlink" 
href="#aria.orchestrator.decorators.operation" title="Permalink to this 
definition">¶</a></dt>
-<dd><p>Operation decorator.</p>
-</dd></dl>
-
-<dl class="function">
-<dt id="aria.orchestrator.decorators.workflow">
-<code class="descclassname">aria.orchestrator.decorators.</code><code 
class="descname">workflow</code><span 
class="sig-paren">(</span><em>func=None</em>, <em>suffix_template=''</em><span 
class="sig-paren">)</span><a class="headerlink" 
href="#aria.orchestrator.decorators.workflow" title="Permalink to this 
definition">¶</a></dt>
-<dd><p>Workflow decorator.</p>
-</dd></dl>
-
-</div>
-<div class="section" id="module-aria.orchestrator.events">
-<span id="aria-orchestrator-events"></span><h2><a class="reference internal" 
href="#module-aria.orchestrator.events" title="aria.orchestrator.events"><code 
class="xref py py-mod docutils literal"><span 
class="pre">aria.orchestrator.events</span></code></a><a class="headerlink" 
href="#module-aria.orchestrator.events" title="Permalink to this 
headline">¶</a></h2>
-<p>Orchestrator events.</p>
-</div>
-<div class="section" id="module-aria.orchestrator.exceptions">
-<span id="aria-orchestrator-exceptions"></span><h2><a class="reference 
internal" href="#module-aria.orchestrator.exceptions" 
title="aria.orchestrator.exceptions"><code class="xref py py-mod docutils 
literal"><span class="pre">aria.orchestrator.exceptions</span></code></a><a 
class="headerlink" href="#module-aria.orchestrator.exceptions" title="Permalink 
to this headline">¶</a></h2>
-<p>Orchestrator exceptions.</p>
-<dl class="exception">
-<dt id="aria.orchestrator.exceptions.ActiveExecutionsError">
-<em class="property">exception </em><code 
class="descclassname">aria.orchestrator.exceptions.</code><code 
class="descname">ActiveExecutionsError</code><a class="headerlink" 
href="#aria.orchestrator.exceptions.ActiveExecutionsError" title="Permalink to 
this definition">¶</a></dt>
-<dd><p>Bases: <a class="reference internal" 
href="aria.html#aria.exceptions.AriaError" 
title="aria.exceptions.AriaError"><code class="xref py py-class docutils 
literal"><span class="pre">aria.exceptions.AriaError</span></code></a></p>
-<p>Raised when attempting to execute a workflow on a service which already has 
an active execution</p>
-</dd></dl>
-
-<dl class="exception">
-<dt id="aria.orchestrator.exceptions.InvalidPluginError">
-<em class="property">exception </em><code 
class="descclassname">aria.orchestrator.exceptions.</code><code 
class="descname">InvalidPluginError</code><a class="headerlink" 
href="#aria.orchestrator.exceptions.InvalidPluginError" title="Permalink to 
this definition">¶</a></dt>
-<dd><p>Bases: <a class="reference internal" 
href="aria.html#aria.exceptions.AriaError" 
title="aria.exceptions.AriaError"><code class="xref py py-class docutils 
literal"><span class="pre">aria.exceptions.AriaError</span></code></a></p>
-<p>Raised when an invalid plugin is validated unsuccessfully</p>
-</dd></dl>
-
-<dl class="exception">
-<dt id="aria.orchestrator.exceptions.InvalidWorkflowRunnerParams">
-<em class="property">exception </em><code 
class="descclassname">aria.orchestrator.exceptions.</code><code 
class="descname">InvalidWorkflowRunnerParams</code><a class="headerlink" 
href="#aria.orchestrator.exceptions.InvalidWorkflowRunnerParams" 
title="Permalink to this definition">¶</a></dt>
-<dd><p>Bases: <a class="reference internal" 
href="aria.html#aria.exceptions.AriaError" 
title="aria.exceptions.AriaError"><code class="xref py py-class docutils 
literal"><span class="pre">aria.exceptions.AriaError</span></code></a></p>
-<p>Raised when invalid combination of arguments is passed to the workflow 
runner</p>
-</dd></dl>
-
-<dl class="exception">
-<dt id="aria.orchestrator.exceptions.OrchestratorError">
-<em class="property">exception </em><code 
class="descclassname">aria.orchestrator.exceptions.</code><code 
class="descname">OrchestratorError</code><a class="headerlink" 
href="#aria.orchestrator.exceptions.OrchestratorError" title="Permalink to this 
definition">¶</a></dt>
-<dd><p>Bases: <a class="reference internal" 
href="aria.html#aria.exceptions.AriaError" 
title="aria.exceptions.AriaError"><code class="xref py py-class docutils 
literal"><span class="pre">aria.exceptions.AriaError</span></code></a></p>
-<p>Orchestrator based exception</p>
-</dd></dl>
-
-<dl class="exception">
-<dt id="aria.orchestrator.exceptions.PluginAlreadyExistsError">
-<em class="property">exception </em><code 
class="descclassname">aria.orchestrator.exceptions.</code><code 
class="descname">PluginAlreadyExistsError</code><a class="headerlink" 
href="#aria.orchestrator.exceptions.PluginAlreadyExistsError" title="Permalink 
to this definition">¶</a></dt>
-<dd><p>Bases: <a class="reference internal" 
href="aria.html#aria.exceptions.AriaError" 
title="aria.exceptions.AriaError"><code class="xref py py-class docutils 
literal"><span class="pre">aria.exceptions.AriaError</span></code></a></p>
-<p>Raised when a plugin with the same package name and package version already 
exists</p>
-</dd></dl>
-
-<dl class="exception">
-<dt id="aria.orchestrator.exceptions.TaskAbortException">
-<em class="property">exception </em><code 
class="descclassname">aria.orchestrator.exceptions.</code><code 
class="descname">TaskAbortException</code><a class="headerlink" 
href="#aria.orchestrator.exceptions.TaskAbortException" 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.RuntimeError";
 title="(in Python v2.7)"><code class="xref py py-class docutils literal"><span 
class="pre">exceptions.RuntimeError</span></code></a></p>
-<p>Used internally when ctx.task.abort is called</p>
-</dd></dl>
-
-<dl class="exception">
-<dt id="aria.orchestrator.exceptions.TaskRetryException">
-<em class="property">exception </em><code 
class="descclassname">aria.orchestrator.exceptions.</code><code 
class="descname">TaskRetryException</code><span 
class="sig-paren">(</span><em>message</em>, <em>retry_interval=None</em><span 
class="sig-paren">)</span><a class="headerlink" 
href="#aria.orchestrator.exceptions.TaskRetryException" 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.RuntimeError";
 title="(in Python v2.7)"><code class="xref py py-class docutils literal"><span 
class="pre">exceptions.RuntimeError</span></code></a></p>
-<p>Used internally when ctx.task.retry is called</p>
-</dd></dl>
-
-<dl class="exception">
-<dt id="aria.orchestrator.exceptions.UndeclaredWorkflowError">
-<em class="property">exception </em><code 
class="descclassname">aria.orchestrator.exceptions.</code><code 
class="descname">UndeclaredWorkflowError</code><a class="headerlink" 
href="#aria.orchestrator.exceptions.UndeclaredWorkflowError" title="Permalink 
to this definition">¶</a></dt>
-<dd><p>Bases: <a class="reference internal" 
href="aria.html#aria.exceptions.AriaError" 
title="aria.exceptions.AriaError"><code class="xref py py-class docutils 
literal"><span class="pre">aria.exceptions.AriaError</span></code></a></p>
-<p>Raised when attempting to execute an undeclared workflow</p>
-</dd></dl>
-
-<dl class="exception">
-<dt id="aria.orchestrator.exceptions.WorkflowImplementationNotFoundError">
-<em class="property">exception </em><code 
class="descclassname">aria.orchestrator.exceptions.</code><code 
class="descname">WorkflowImplementationNotFoundError</code><a 
class="headerlink" 
href="#aria.orchestrator.exceptions.WorkflowImplementationNotFoundError" 
title="Permalink to this definition">¶</a></dt>
-<dd><p>Bases: <a class="reference internal" 
href="aria.html#aria.exceptions.AriaError" 
title="aria.exceptions.AriaError"><code class="xref py py-class docutils 
literal"><span class="pre">aria.exceptions.AriaError</span></code></a></p>
-<p>Raised when attempting to import a workflow’s code but the implementation 
is not found</p>
-</dd></dl>
-
-</div>
-<div class="section" id="module-aria.orchestrator.plugin">
-<span id="aria-orchestrator-plugin"></span><h2><a class="reference internal" 
href="#module-aria.orchestrator.plugin" title="aria.orchestrator.plugin"><code 
class="xref py py-mod docutils literal"><span 
class="pre">aria.orchestrator.plugin</span></code></a><a class="headerlink" 
href="#module-aria.orchestrator.plugin" title="Permalink to this 
headline">¶</a></h2>
-<p>Plugin management.</p>
-<dl class="class">
-<dt id="aria.orchestrator.plugin.PluginManager">
-<em class="property">class </em><code 
class="descclassname">aria.orchestrator.plugin.</code><code 
class="descname">PluginManager</code><span 
class="sig-paren">(</span><em>model</em>, <em>plugins_dir</em><span 
class="sig-paren">)</span><a class="headerlink" 
href="#aria.orchestrator.plugin.PluginManager" 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>
-<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>plugins_dir</strong> – root directory in which to 
install plugins</td>
-</tr>
-</tbody>
-</table>
-<dl class="method">
-<dt id="aria.orchestrator.plugin.PluginManager.get_plugin_dir">
-<code class="descname">get_plugin_dir</code><span 
class="sig-paren">(</span><em>plugin</em><span class="sig-paren">)</span><a 
class="headerlink" 
href="#aria.orchestrator.plugin.PluginManager.get_plugin_dir" title="Permalink 
to this definition">¶</a></dt>
-<dd></dd></dl>
-
-<dl class="method">
-<dt id="aria.orchestrator.plugin.PluginManager.install">
-<code class="descname">install</code><span 
class="sig-paren">(</span><em>source</em><span class="sig-paren">)</span><a 
class="headerlink" href="#aria.orchestrator.plugin.PluginManager.install" 
title="Permalink to this definition">¶</a></dt>
-<dd><p>Install a wagon plugin.</p>
-</dd></dl>
-
-<dl class="method">
-<dt id="aria.orchestrator.plugin.PluginManager.load_plugin">
-<code class="descname">load_plugin</code><span 
class="sig-paren">(</span><em>plugin</em>, <em>env=None</em><span 
class="sig-paren">)</span><a class="headerlink" 
href="#aria.orchestrator.plugin.PluginManager.load_plugin" title="Permalink to 
this definition">¶</a></dt>
-<dd><p>Load the plugin into an environment.</p>
-<p>Loading the plugin means the plugin’s code and binaries paths will be 
appended to the
-environment’s <code class="docutils literal"><span 
class="pre">PATH</span></code> and <code class="docutils literal"><span 
class="pre">PYTHONPATH</span></code>, thereby allowing usage of the plugin.</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>plugin</strong> – plugin to load</li>
-<li><strong>env</strong> – environment to load the plugin into; If <code 
class="docutils literal"><span class="pre">None</span></code>, <a 
class="reference external" 
href="https://docs.python.org/2.7/library/os.html#os.environ"; title="(in Python 
v2.7)"><code class="xref py py-obj docutils literal"><span 
class="pre">os.environ</span></code></a> will be
-used</li>
-</ul>
-</td>
-</tr>
-</tbody>
-</table>
-</dd></dl>
-
-<dl class="staticmethod">
-<dt id="aria.orchestrator.plugin.PluginManager.validate_plugin">
-<em class="property">static </em><code 
class="descname">validate_plugin</code><span 
class="sig-paren">(</span><em>source</em><span class="sig-paren">)</span><a 
class="headerlink" 
href="#aria.orchestrator.plugin.PluginManager.validate_plugin" title="Permalink 
to this definition">¶</a></dt>
-<dd><p>Validate a plugin archive.</p>
-<p>A valid plugin is a <a class="reference external" 
href="http://github.com/cloudify-cosmo/wagon";>wagon</a> in the zip format
-(suffix may also be <code class="docutils literal"><span 
class="pre">.wgn</span></code>).</p>
-</dd></dl>
-
-</dd></dl>
-
-</div>
-<div class="section" id="module-aria.orchestrator.workflow_runner">
-<span id="aria-orchestrator-workflow-runner"></span><h2><a class="reference 
internal" href="#module-aria.orchestrator.workflow_runner" 
title="aria.orchestrator.workflow_runner"><code class="xref py py-mod docutils 
literal"><span 
class="pre">aria.orchestrator.workflow_runner</span></code></a><a 
class="headerlink" href="#module-aria.orchestrator.workflow_runner" 
title="Permalink to this headline">¶</a></h2>
-<p>Running workflows.</p>
-<dl class="class">
-<dt id="aria.orchestrator.workflow_runner.WorkflowRunner">
-<em class="property">class </em><code 
class="descclassname">aria.orchestrator.workflow_runner.</code><code 
class="descname">WorkflowRunner</code><span 
class="sig-paren">(</span><em>model_storage</em>, <em>resource_storage</em>, 
<em>plugin_manager</em>, <em>execution_id=None</em>, <em>service_id=None</em>, 
<em>workflow_name=None</em>, <em>inputs=None</em>, <em>executor=None</em>, 
<em>task_max_attempts=30</em>, <em>task_retry_interval=30</em><span 
class="sig-paren">)</span><a class="headerlink" 
href="#aria.orchestrator.workflow_runner.WorkflowRunner" 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>Manages a single workflow execution on a given service.</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_name</strong> – workflow name</li>
-<li><strong>service_id</strong> – service ID</li>
-<li><strong>inputs</strong> – key-value dict of inputs for the execution</li>
-<li><strong>model_storage</strong> – model storage API (“MAPI”)</li>
-<li><strong>resource_storage</strong> – resource storage API 
(“RAPI”)</li>
-<li><strong>plugin_manager</strong> – plugin manager</li>
-<li><strong>executor</strong> – executor for tasks; defaults to a
-<a class="reference internal" 
href="aria.orchestrator.workflows.executor.html#aria.orchestrator.workflows.executor.process.ProcessExecutor"
 title="aria.orchestrator.workflows.executor.process.ProcessExecutor"><code 
class="xref py py-class docutils literal"><span 
class="pre">ProcessExecutor</span></code></a> instance</li>
-<li><strong>task_max_attempts</strong> – maximum attempts of repeating each 
failing task</li>
-<li><strong>task_retry_interval</strong> – retry interval between retry 
attempts of a failing task</li>
-</ul>
-</td>
-</tr>
-</tbody>
-</table>
-<dl class="method">
-<dt id="aria.orchestrator.workflow_runner.WorkflowRunner.cancel">
-<code class="descname">cancel</code><span class="sig-paren">(</span><span 
class="sig-paren">)</span><a class="headerlink" 
href="#aria.orchestrator.workflow_runner.WorkflowRunner.cancel" 
title="Permalink to this definition">¶</a></dt>
-<dd></dd></dl>
-
-<dl class="method">
-<dt id="aria.orchestrator.workflow_runner.WorkflowRunner.execute">
-<code class="descname">execute</code><span class="sig-paren">(</span><span 
class="sig-paren">)</span><a class="headerlink" 
href="#aria.orchestrator.workflow_runner.WorkflowRunner.execute" 
title="Permalink to this definition">¶</a></dt>
-<dd></dd></dl>
-
-<dl class="attribute">
-<dt id="aria.orchestrator.workflow_runner.WorkflowRunner.execution">
-<code class="descname">execution</code><a class="headerlink" 
href="#aria.orchestrator.workflow_runner.WorkflowRunner.execution" 
title="Permalink to this definition">¶</a></dt>
-<dd></dd></dl>
-
-<dl class="attribute">
-<dt id="aria.orchestrator.workflow_runner.WorkflowRunner.execution_id">
-<code class="descname">execution_id</code><a class="headerlink" 
href="#aria.orchestrator.workflow_runner.WorkflowRunner.execution_id" 
title="Permalink to this definition">¶</a></dt>
-<dd></dd></dl>
-
-<dl class="attribute">
-<dt id="aria.orchestrator.workflow_runner.WorkflowRunner.service">
-<code class="descname">service</code><a class="headerlink" 
href="#aria.orchestrator.workflow_runner.WorkflowRunner.service" 
title="Permalink to this definition">¶</a></dt>
-<dd></dd></dl>
-
-</dd></dl>
-
-</div>
-</div>
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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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