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<?xml version="1.0" encoding="ascii"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<title>actuator.ActuatorOrchestration</title>
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<a href="actuator-module.html">Package actuator</a> ::
Class ActuatorOrchestration
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<!-- ==================== CLASS DESCRIPTION ==================== -->
<h1 class="epydoc">Class ActuatorOrchestration</h1><p class="nomargin-top"><span class="codelink"><a href="actuator-pysrc.html#ActuatorOrchestration">source code</a></span></p>
<pre class="base-tree">
object --+
|
<strong class="uidshort">ActuatorOrchestration</strong>
</pre>
<hr />
<p>Processes Actuator models to stand up the system being model (initiate
a system).</p>
<p>This class provides the overall controls to process a set of Actuator
models, along with a provisioner, to stand up an instance of they system
they model.</p>
<p>When the standup is being processed, log messages are sent to stdout
using the standard Python logging module. You can change where messages
are sent by installing a different handler on the root logger. See the
logging section of the Python manual for more info.</p>
<!-- ==================== INSTANCE METHODS ==================== -->
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<span class="summary-type"> </span>
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<td><span class="summary-sig"><a href="actuator.ActuatorOrchestration-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">infra_model_inst</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">provisioner</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">namespace_model_inst</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">config_model_inst</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">log_level</span>=<span class="summary-sig-default">20</span>,
<span class="summary-sig-arg">no_delay</span>=<span class="summary-sig-default">False</span>,
<span class="summary-sig-arg">num_threads</span>=<span class="summary-sig-default">5</span>,
<span class="summary-sig-arg">post_prov_pause</span>=<span class="summary-sig-default">60</span>)</span><br />
Create an instance of the orchestrator to operate on the supplied
models/provisioner</td>
<td align="right" valign="top">
<span class="codelink"><a href="actuator-pysrc.html#ActuatorOrchestration.__init__">source code</a></span>
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
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<tr>
<td><span class="summary-sig"><a href="actuator.ActuatorOrchestration-class.html#is_running" class="summary-sig-name">is_running</a>(<span class="summary-sig-arg">self</span>)</span><br />
Predicate method to call to check if the initiation is still running.</td>
<td align="right" valign="top">
<span class="codelink"><a href="actuator-pysrc.html#ActuatorOrchestration.is_running">source code</a></span>
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
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<td><span class="summary-sig"><a href="actuator.ActuatorOrchestration-class.html#is_complete" class="summary-sig-name">is_complete</a>(<span class="summary-sig-arg">self</span>)</span><br />
Predicate method to check if the run is complete with no error</td>
<td align="right" valign="top">
<span class="codelink"><a href="actuator-pysrc.html#ActuatorOrchestration.is_complete">source code</a></span>
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
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<td><span class="summary-sig"><a href="actuator.ActuatorOrchestration-class.html#get_errors" class="summary-sig-name">get_errors</a>(<span class="summary-sig-arg">self</span>)</span><br />
Returns the error details of any failed tasks during initiation.</td>
<td align="right" valign="top">
<span class="codelink"><a href="actuator-pysrc.html#ActuatorOrchestration.get_errors">source code</a></span>
</td>
</tr>
</table>
</td>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
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<tr>
<td><span class="summary-sig"><a href="actuator.ActuatorOrchestration-class.html#initiate_system" class="summary-sig-name">initiate_system</a>(<span class="summary-sig-arg">self</span>)</span><br />
Stand up (initiate) the system from the models</td>
<td align="right" valign="top">
<span class="codelink"><a href="actuator-pysrc.html#ActuatorOrchestration.initiate_system">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="2" class="summary">
<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
<code>__delattr__</code>,
<code>__format__</code>,
<code>__getattribute__</code>,
<code>__hash__</code>,
<code>__new__</code>,
<code>__reduce__</code>,
<code>__reduce_ex__</code>,
<code>__repr__</code>,
<code>__setattr__</code>,
<code>__sizeof__</code>,
<code>__str__</code>,
<code>__subclasshook__</code>
</p>
</td>
</tr>
</table>
<!-- ==================== CLASS VARIABLES ==================== -->
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<span class="summary-type"> </span>
</td><td class="summary">
<a name="NOT_STARTED"></a><span class="summary-name">NOT_STARTED</span> = <code title="0">0</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="PERFORMING_PROVISION"></a><span class="summary-name">PERFORMING_PROVISION</span> = <code title="1">1</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="PERFORMING_CONFIG"></a><span class="summary-name">PERFORMING_CONFIG</span> = <code title="2">2</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="PERFORMING_EXEC"></a><span class="summary-name">PERFORMING_EXEC</span> = <code title="3">3</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="COMPLETE"></a><span class="summary-name">COMPLETE</span> = <code title="4">4</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="ABORT_PROVISION"></a><span class="summary-name">ABORT_PROVISION</span> = <code title="5">5</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="ABORT_CONFIG"></a><span class="summary-name">ABORT_CONFIG</span> = <code title="6">6</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="ABORT_EXEC"></a><span class="summary-name">ABORT_EXEC</span> = <code title="7">7</code>
</td>
</tr>
</table>
<!-- ==================== PROPERTIES ==================== -->
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<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
<code>__class__</code>
</p>
</td>
</tr>
</table>
<!-- ==================== METHOD DETAILS ==================== -->
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<a name="__init__"></a>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">infra_model_inst</span>=<span class="sig-default">None</span>,
<span class="sig-arg">provisioner</span>=<span class="sig-default">None</span>,
<span class="sig-arg">namespace_model_inst</span>=<span class="sig-default">None</span>,
<span class="sig-arg">config_model_inst</span>=<span class="sig-default">None</span>,
<span class="sig-arg">log_level</span>=<span class="sig-default">20</span>,
<span class="sig-arg">no_delay</span>=<span class="sig-default">False</span>,
<span class="sig-arg">num_threads</span>=<span class="sig-default">5</span>,
<span class="sig-arg">post_prov_pause</span>=<span class="sig-default">60</span>)</span>
<br /><em class="fname">(Constructor)</em>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="actuator-pysrc.html#ActuatorOrchestration.__init__">source code</a></span>
</td>
</tr></table>
<p>Create an instance of the orchestrator to operate on the supplied
models/provisioner</p>
<p>This method creates a new orchestrator, which is then ready to
initiate the system described by the models provided to it. Some
reasonableness checks are done on the arguments to ensure that there are
no conflicting semantics being requested, otherwise the method simply
returns an orchestrator ready to go.</p>
<dl class="fields">
<dt>Parameters:</dt>
<dd><ul class="nomargin-top">
<li><strong class="pname"><code>infra_model_instance</code></strong> - Optional; an instance of a subclass of <a
href="actuator.infra.InfraModel-class.html"
class="link">actuator.infra.InfraModel</a>. If absent, all host
information must be contained as values for host_refs in the
NamespaceModel that resolve to either an IP address or a
resolvable host name.</li>
<li><strong class="pname"><code>provisioner</code></strong> - Optional; an instance of a subclass of <a
href="actuator.provisioners.core.BaseProvisioner-class.html"
class="link">actuator.provisioners.core.BaseProvisioner</a>, such
as the Openstack provisioner. If absent and an infra model has
been supplied, then all resources in the model must be
StaticServers, or else the resource will not get provisioned.</li>
<li><strong class="pname"><code>namespace_model_inst</code></strong> - Optional; an instance of a subclass of <a
href="actuator.namespace.NamespaceModel-class.html"
class="link">actuator.namespace.NamespaceModel</a>. If absent,
then only infra model processing will be possible (if one was
supplied).</li>
<li><strong class="pname"><code>config_model_instance</code></strong> - Optional; an instance of a subclass of <a
href="actuator.config.ConfigModel-class.html"
class="link">actuator.config.ConfigModel</a>. If absent, no
configuration will be carried out, but the namespace can be
interrogated after orchestration to determine values from any
provisioned infra</li>
<li><strong class="pname"><code>log_level</code></strong> - Optional; default is LOG_INFO. One of the symbolic log constants
from the top level actuator package. These are LOG_CRIT,
LOG_ERROR, LOG_WARN, LOG_INFO, and LOG_DEBUG. The default
supplies progress on each provisioning and configuration task.</li>
<li><strong class="pname"><code>no_delay</code></strong> - Optional; boolean, default is False. Flags if a short, random
delay of up to 2.5 seconds should be inserted prior to performing
a task. May be desirable in cases where many tasks may hit a
single host at one time, which spreads out the load of
establishing ssh connections, helping to avoid timeouts.</li>
<li><strong class="pname"><code>num_threads</code></strong> - Optional; int, default is 5. Each task, whether resource
provisioning or configuration, is carried out in a separate
thread. The more parallel tasks your model has the higher this
number can be to have a positive impact on the overall task
completion rate. There is no value in making this larger than the
largest number of tasks you may have running in parallel.</li>
<li><strong class="pname"><code>post_prov_pause</code></strong> - Optional: int, default is 60. The number of seconds to pause
after provision is done before starting on configuration. The
reason this is useful is because virtual/cloud systems may
complete provisioning, but they may not have all route
information propagated for newly provisioned hosts/floating ips
right away. This pause gives virtual/cloud systems a chance to
stabilize before starting on configuration tasks. If no
provisioning was done (a static infra model or simply no
infra/provisioner), then the pause is skipped.</li>
</ul></dd>
<dt>Returns:</dt>
<dd>initialized orchestrator instance</dd>
<dt>Raises:</dt>
<dd><ul class="nomargin-top">
<li><code><strong class='fraise'><a href="actuator.exec_agents.core.ExecutionException-class.html">ExecutionException</a></strong></code> - In the following circumstances this method will raise
actuator.ExecutionException:
<ul>
<li>
The value supplied for infra_model_inst is not an instance of
<a href="actuator.infra.InfraModel-class.html"
class="link">actuator.infra.InfraModel</a>
</li>
<li>
The value supplied for provisioner is not an instance of the <a
href="actuator.provisioners.core.BaseProvisioner-class.html"
class="link">actuator.provisioners.core.BaseProvisioner</a>
base class
</li>
<li>
The value supplied for namespace_model_inst is not an instance
of <a href="actuator.namespace.NamespaceModel-class.html"
class="link">actuator.namespace.NamespaceModel</a>
</li>
<li>
The value supplied for config_model_inst is not an instance of
<a href="actuator.config.ConfigModel-class.html"
class="link">actuator.config.ConfigModel</a>
</li>
</ul></li>
</ul></dd>
<dt>Overrides:
object.__init__
</dt>
</dl>
</td></tr></table>
</div>
<a name="is_running"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
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<h3 class="epydoc"><span class="sig"><span class="sig-name">is_running</span>(<span class="sig-arg">self</span>)</span>
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<p>Predicate method to call to check if the initiation is still
running.</p>
<dl class="fields">
<dt>Returns:</dt>
<dd>True is the initiation is still running, False otherwise</dd>
</dl>
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<a name="is_complete"></a>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">is_complete</span>(<span class="sig-arg">self</span>)</span>
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<p>Predicate method to check if the run is complete with no error</p>
<dl class="fields">
<dt>Returns:</dt>
<dd>True is the run completed successfully; False otherwise</dd>
</dl>
</td></tr></table>
</div>
<a name="get_errors"></a>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">get_errors</span>(<span class="sig-arg">self</span>)</span>
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><span class="codelink"><a href="actuator-pysrc.html#ActuatorOrchestration.get_errors">source code</a></span>
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<p>Returns the error details of any failed tasks during initiation.</p>
<dl class="fields">
<dt>Returns:</dt>
<dd>A list of 4-tuples: (t, et, ev, tb), where: t is the task that
experienced the error et is the exception type ev is the
exception value tb is the traceback from where the exception was
raised</dd>
</dl>
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<a name="initiate_system"></a>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">initiate_system</span>(<span class="sig-arg">self</span>)</span>
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><span class="codelink"><a href="actuator-pysrc.html#ActuatorOrchestration.initiate_system">source code</a></span>
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<p>Stand up (initiate) the system from the models</p>
<p>Starts the process of system initiation. By default, logs progress
messages to stdout. If errors are raised, then they will be logged with
level CRITICAL.</p>
<dl class="fields">
<dt>Returns:</dt>
<dd>True if initiation was successful, False otherwise.</dd>
</dl>
</td></tr></table>
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