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Linking.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>
Class: Concurrent::Actor::Behaviour::Linking
— Concurrent Ruby
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pathId = "Concurrent::Actor::Behaviour::Linking";
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<a href="../../../_index.html">Index (L)</a> »
<span class='title'><span class='object_link'><a href="../../../Concurrent.html" title="Concurrent (module)">Concurrent</a></span></span> » <span class='title'><span class='object_link'><a href="../../Actor.html" title="Concurrent::Actor (module)">Actor</a></span></span> » <span class='title'><span class='object_link'><a href="../Behaviour.html" title="Concurrent::Actor::Behaviour (module)">Behaviour</a></span></span>
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<span class="title">Linking</span>
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<div id="search">
<a class="full_list_link" id="class_list_link"
href="../../../class_list.html">
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<div id="content"><h1>Class: Concurrent::Actor::Behaviour::Linking
</h1>
<div class="box_info">
<dl>
<dt>Inherits:</dt>
<dd>
<span class="inheritName"><span class='object_link'><a href="Abstract.html" title="Concurrent::Actor::Behaviour::Abstract (class)">Abstract</a></span></span>
<ul class="fullTree">
<li>Object</li>
<li class="next"><span class='object_link'><a href="Abstract.html" title="Concurrent::Actor::Behaviour::Abstract (class)">Abstract</a></span></li>
<li class="next">Concurrent::Actor::Behaviour::Linking</li>
</ul>
<a href="#" class="inheritanceTree">show all</a>
</dd>
</dl>
<dl>
<dt>Defined in:</dt>
<dd>lib-edge/concurrent/actor/behaviour/linking.rb</dd>
</dl>
</div>
<h2>Overview</h2><div class="docstring">
<div class="discussion">
<p>Links the actor to other actors and sends actor's events to them,
like: <code>:terminated</code>, <code>:paused</code>, <code>:resumed</code>, errors, etc.
Linked actor needs to handle those messages.</p>
<pre class="code ruby"><code class="ruby"><span class='id identifier rubyid_listener'>listener</span> <span class='op'>=</span> <span class='const'>AdHoc</span><span class='period'>.</span><span class='id identifier rubyid_spawn'>spawn</span> <span class='label'>name:</span> <span class='symbol'>:listener</span> <span class='kw'>do</span>
<span class='id identifier rubyid_lambda'>lambda</span> <span class='kw'>do</span> <span class='op'>|</span><span class='id identifier rubyid_message'>message</span><span class='op'>|</span>
<span class='kw'>case</span> <span class='id identifier rubyid_message'>message</span>
<span class='kw'>when</span> <span class='const'><span class='object_link'><a href="../Reference.html" title="Concurrent::Actor::Reference (class)">Reference</a></span></span>
<span class='kw'>if</span> <span class='id identifier rubyid_message'>message</span><span class='period'>.</span><span class='id identifier rubyid_ask!'>ask!</span><span class='lparen'>(</span><span class='symbol'>:linked?</span><span class='rparen'>)</span>
<span class='id identifier rubyid_message'>message</span> <span class='op'><<</span> <span class='symbol'>:unlink</span>
<span class='kw'>else</span>
<span class='id identifier rubyid_message'>message</span> <span class='op'><<</span> <span class='symbol'>:link</span>
<span class='kw'>end</span>
<span class='kw'>else</span>
<span class='id identifier rubyid_puts'>puts</span> <span class='tstring'><span class='tstring_beg'>"</span><span class='tstring_content'>got event </span><span class='embexpr_beg'>#{</span><span class='id identifier rubyid_message'>message</span><span class='period'>.</span><span class='id identifier rubyid_inspect'>inspect</span><span class='embexpr_end'>}</span><span class='tstring_content'> from </span><span class='embexpr_beg'>#{</span><span class='id identifier rubyid_envelope'>envelope</span><span class='period'>.</span><span class='id identifier rubyid_sender'>sender</span><span class='embexpr_end'>}</span><span class='tstring_end'>"</span></span>
<span class='kw'>end</span>
<span class='kw'>end</span>
<span class='kw'>end</span>
<span class='id identifier rubyid_an_actor'>an_actor</span> <span class='op'>=</span> <span class='const'>AdHoc</span><span class='period'>.</span><span class='id identifier rubyid_spawn'>spawn</span> <span class='label'>name:</span> <span class='symbol'>:an_actor</span><span class='comma'>,</span> <span class='label'>supervise:</span> <span class='kw'>true</span><span class='comma'>,</span> <span class='label'>behaviour_definition:</span> <span class='const'><span class='object_link'><a href="../Behaviour.html" title="Concurrent::Actor::Behaviour (module)">Behaviour</a></span></span><span class='period'>.</span><span class='id identifier rubyid_restarting_behaviour_definition'><span class='object_link'><a href="../Behaviour.html#restarting_behaviour_definition-class_method" title="Concurrent::Actor::Behaviour.restarting_behaviour_definition (method)">restarting_behaviour_definition</a></span></span> <span class='kw'>do</span>
<span class='id identifier rubyid_lambda'>lambda</span> <span class='lbrace'>{</span> <span class='op'>|</span><span class='id identifier rubyid_message'>message</span><span class='op'>|</span> <span class='id identifier rubyid_raise'>raise</span> <span class='tstring'><span class='tstring_beg'>'</span><span class='tstring_content'>failed</span><span class='tstring_end'>'</span></span><span class='rbrace'>}</span>
<span class='kw'>end</span>
<span class='comment'># link the actor
</span><span class='id identifier rubyid_listener'>listener</span><span class='period'>.</span><span class='id identifier rubyid_ask'>ask</span><span class='lparen'>(</span><span class='id identifier rubyid_an_actor'>an_actor</span><span class='rparen'>)</span><span class='period'>.</span><span class='id identifier rubyid_wait'>wait</span>
<span class='id identifier rubyid_an_actor'>an_actor</span><span class='period'>.</span><span class='id identifier rubyid_ask'>ask</span><span class='lparen'>(</span><span class='symbol'>:fail</span><span class='rparen'>)</span><span class='period'>.</span><span class='id identifier rubyid_wait'>wait</span>
<span class='comment'># unlink the actor
</span><span class='id identifier rubyid_listener'>listener</span><span class='period'>.</span><span class='id identifier rubyid_ask'>ask</span><span class='lparen'>(</span><span class='id identifier rubyid_an_actor'>an_actor</span><span class='rparen'>)</span><span class='period'>.</span><span class='id identifier rubyid_wait'>wait</span>
<span class='id identifier rubyid_an_actor'>an_actor</span><span class='period'>.</span><span class='id identifier rubyid_ask'>ask</span><span class='lparen'>(</span><span class='symbol'>:fail</span><span class='rparen'>)</span><span class='period'>.</span><span class='id identifier rubyid_wait'>wait</span>
<span class='id identifier rubyid_an_actor'>an_actor</span> <span class='op'><<</span> <span class='symbol'>:terminate!</span>
</code></pre>
<p>produces only two events, other events happened after unlinking</p>
<pre class="code ruby"><code class="ruby">got event #<RuntimeError: failed> from #<Concurrent::Actor::Reference /an_actor (Concurrent::Actor::Utils::AdHoc)>
got event :reset from #<Concurrent::Actor::Reference /an_actor (Concurrent::Actor::Utils::AdHoc)>
</code></pre>
</div>
</div>
<div class="tags">
</div>
<h2>
Instance Method Summary
<small><a href="#" class="summary_toggle">collapse</a></small>
</h2>
<ul class="summary">
<li class="public ">
<span class="summary_signature">
<a href="#initialize-instance_method" title="#initialize (instance method)">#<strong>initialize</strong>(core, subsequent, core_options) ⇒ Linking </a>
</span>
<span class="note title constructor">constructor</span>
<span class="summary_desc"><div class='inline'><p>A new instance of Linking.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#link-instance_method" title="#link (instance method)">#<strong>link</strong>(ref) ⇒ undocumented </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#on_envelope-instance_method" title="#on_envelope (instance method)">#<strong>on_envelope</strong>(envelope) ⇒ undocumented </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#on_event-instance_method" title="#on_event (instance method)">#<strong>on_event</strong>(public, event) ⇒ undocumented </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#unlink-instance_method" title="#unlink (instance method)">#<strong>unlink</strong>(ref) ⇒ undocumented </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
</ul>
<div id="constructor_details" class="method_details_list">
<h2>Constructor Details</h2>
<div class="method_details first">
<h3 class="signature first" id="initialize-instance_method">
#<strong>initialize</strong>(core, subsequent, core_options) ⇒ <tt><span class='object_link'><a href="" title="Concurrent::Actor::Behaviour::Linking (class)">Linking</a></span></tt>
</h3><div class="docstring">
<div class="discussion">
<p>Returns a new instance of Linking</p>
</div>
</div>
<div class="tags">
</div><table class="source_code">
<tr>
<td>
<pre class="lines">
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</td>
<td>
<pre class="code"><span class="info file"># File 'lib-edge/concurrent/actor/behaviour/linking.rb', line 43</span>
<span class='kw'>def</span> <span class='id identifier rubyid_initialize'>initialize</span><span class='lparen'>(</span><span class='id identifier rubyid_core'>core</span><span class='comma'>,</span> <span class='id identifier rubyid_subsequent'>subsequent</span><span class='comma'>,</span> <span class='id identifier rubyid_core_options'>core_options</span><span class='rparen'>)</span>
<span class='kw'>super</span> <span class='id identifier rubyid_core'>core</span><span class='comma'>,</span> <span class='id identifier rubyid_subsequent'>subsequent</span><span class='comma'>,</span> <span class='id identifier rubyid_core_options'>core_options</span>
<span class='ivar'>@linked</span> <span class='op'>=</span> <span class='const'><span class='object_link'><a href="../../Set.html" title="Concurrent::Set (class)">Set</a></span></span><span class='period'>.</span><span class='id identifier rubyid_new'>new</span>
<span class='ivar'>@linked</span><span class='period'>.</span><span class='id identifier rubyid_add'>add</span> <span class='const'><span class='object_link'><a href="../../Actor.html" title="Concurrent::Actor (module)">Actor</a></span></span><span class='period'>.</span><span class='id identifier rubyid_current'><span class='object_link'><a href="../../Actor.html#current-class_method" title="Concurrent::Actor.current (method)">current</a></span></span> <span class='kw'>if</span> <span class='id identifier rubyid_core_options'>core_options</span><span class='lbracket'>[</span><span class='symbol'>:link</span><span class='rbracket'>]</span> <span class='op'>!=</span> <span class='kw'>false</span>
<span class='kw'>end</span></pre>
</td>
</tr>
</table>
</div>
</div>
<div id="instance_method_details" class="method_details_list">
<h2>Instance Method Details</h2>
<div class="method_details first">
<h3 class="signature first" id="link-instance_method">
#<strong>link</strong>(ref) ⇒ <tt>undocumented</tt>
</h3><div class="docstring">
<div class="discussion">
</div>
</div>
<div class="tags">
</div><table class="source_code">
<tr>
<td>
<pre class="lines">
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</td>
<td>
<pre class="code"><span class="info file"># File 'lib-edge/concurrent/actor/behaviour/linking.rb', line 64</span>
<span class='kw'>def</span> <span class='id identifier rubyid_link'>link</span><span class='lparen'>(</span><span class='id identifier rubyid_ref'>ref</span><span class='rparen'>)</span>
<span class='ivar'>@linked</span><span class='period'>.</span><span class='id identifier rubyid_add'>add</span><span class='lparen'>(</span><span class='id identifier rubyid_ref'>ref</span><span class='rparen'>)</span>
<span class='kw'>true</span>
<span class='kw'>end</span></pre>
</td>
</tr>
</table>
</div>
<div class="method_details ">
<h3 class="signature " id="on_envelope-instance_method">
#<strong>on_envelope</strong>(envelope) ⇒ <tt>undocumented</tt>
</h3><div class="docstring">
<div class="discussion">
</div>
</div>
<div class="tags">
</div><table class="source_code">
<tr>
<td>
<pre class="lines">
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</td>
<td>
<pre class="code"><span class="info file"># File 'lib-edge/concurrent/actor/behaviour/linking.rb', line 49</span>
<span class='kw'>def</span> <span class='id identifier rubyid_on_envelope'>on_envelope</span><span class='lparen'>(</span><span class='id identifier rubyid_envelope'>envelope</span><span class='rparen'>)</span>
<span class='kw'>case</span> <span class='id identifier rubyid_envelope'>envelope</span><span class='period'>.</span><span class='id identifier rubyid_message'>message</span>
<span class='kw'>when</span> <span class='symbol'>:link</span>
<span class='id identifier rubyid_link'>link</span> <span class='id identifier rubyid_envelope'>envelope</span><span class='period'>.</span><span class='id identifier rubyid_sender'>sender</span>
<span class='kw'>when</span> <span class='symbol'>:unlink</span>
<span class='id identifier rubyid_unlink'>unlink</span> <span class='id identifier rubyid_envelope'>envelope</span><span class='period'>.</span><span class='id identifier rubyid_sender'>sender</span>
<span class='kw'>when</span> <span class='symbol'>:linked?</span>
<span class='ivar'>@linked</span><span class='period'>.</span><span class='id identifier rubyid_include?'>include?</span> <span class='id identifier rubyid_envelope'>envelope</span><span class='period'>.</span><span class='id identifier rubyid_sender'>sender</span>
<span class='kw'>when</span> <span class='symbol'>:linked</span>
<span class='ivar'>@linked</span><span class='period'>.</span><span class='id identifier rubyid_to_a'>to_a</span>
<span class='kw'>else</span>
<span class='id identifier rubyid_pass'>pass</span> <span class='id identifier rubyid_envelope'>envelope</span>
<span class='kw'>end</span>
<span class='kw'>end</span></pre>
</td>
</tr>
</table>
</div>
<div class="method_details ">
<h3 class="signature " id="on_event-instance_method">
#<strong>on_event</strong>(public, event) ⇒ <tt>undocumented</tt>
</h3><div class="docstring">
<div class="discussion">
</div>
</div>
<div class="tags">
</div><table class="source_code">
<tr>
<td>
<pre class="lines">
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</td>
<td>
<pre class="code"><span class="info file"># File 'lib-edge/concurrent/actor/behaviour/linking.rb', line 74</span>
<span class='kw'>def</span> <span class='id identifier rubyid_on_event'>on_event</span><span class='lparen'>(</span><span class='id identifier rubyid_public'>public</span><span class='comma'>,</span> <span class='id identifier rubyid_event'>event</span><span class='rparen'>)</span>
<span class='id identifier rubyid_event_name'>event_name</span><span class='comma'>,</span> <span class='id identifier rubyid__'>_</span> <span class='op'>=</span> <span class='id identifier rubyid_event'>event</span>
<span class='ivar'>@linked</span><span class='period'>.</span><span class='id identifier rubyid_each'>each</span> <span class='lbrace'>{</span> <span class='op'>|</span><span class='id identifier rubyid_a'>a</span><span class='op'>|</span> <span class='id identifier rubyid_a'>a</span> <span class='op'><<</span> <span class='id identifier rubyid_event'>event</span> <span class='rbrace'>}</span> <span class='kw'>if</span> <span class='id identifier rubyid_public'>public</span>
<span class='ivar'>@linked</span><span class='period'>.</span><span class='id identifier rubyid_clear'>clear</span> <span class='kw'>if</span> <span class='id identifier rubyid_event_name'>event_name</span> <span class='op'>==</span> <span class='symbol'>:terminated</span>
<span class='kw'>super</span> <span class='id identifier rubyid_public'>public</span><span class='comma'>,</span> <span class='id identifier rubyid_event'>event</span>
<span class='kw'>end</span></pre>
</td>
</tr>
</table>
</div>
<div class="method_details ">
<h3 class="signature " id="unlink-instance_method">
#<strong>unlink</strong>(ref) ⇒ <tt>undocumented</tt>
</h3><div class="docstring">
<div class="discussion">
</div>
</div>
<div class="tags">
</div><table class="source_code">
<tr>
<td>
<pre class="lines">
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</td>
<td>
<pre class="code"><span class="info file"># File 'lib-edge/concurrent/actor/behaviour/linking.rb', line 69</span>
<span class='kw'>def</span> <span class='id identifier rubyid_unlink'>unlink</span><span class='lparen'>(</span><span class='id identifier rubyid_ref'>ref</span><span class='rparen'>)</span>
<span class='ivar'>@linked</span><span class='period'>.</span><span class='id identifier rubyid_delete'>delete</span><span class='lparen'>(</span><span class='id identifier rubyid_ref'>ref</span><span class='rparen'>)</span>
<span class='kw'>true</span>
<span class='kw'>end</span></pre>
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