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SafeTaskExecutor.html
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SafeTaskExecutor.html
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<!DOCTYPE html>
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Class: Concurrent::SafeTaskExecutor
— Concurrent Ruby
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<div id="content"><h1>Class: Concurrent::SafeTaskExecutor
</h1>
<div class="box_info">
<dl>
<dt>Inherits:</dt>
<dd>
<span class="inheritName"><span class='object_link'>Concurrent::Synchronization::LockableObject</span></span>
<ul class="fullTree">
<li>Object</li>
<li class="next"><span class='object_link'>Concurrent::Synchronization::LockableObject</span></li>
<li class="next">Concurrent::SafeTaskExecutor</li>
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<dl>
<dt>Defined in:</dt>
<dd>lib/concurrent/executor/safe_task_executor.rb</dd>
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<h2>Overview</h2><div class="docstring">
<div class="discussion">
<p>A simple utility class that executes a callable and returns and array of three elements:
success - indicating if the callable has been executed without errors
value - filled by the callable result if it has been executed without errors, nil otherwise
reason - the error risen by the callable if it has been executed with errors, nil otherwise</p>
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<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="#execute-instance_method" title="#execute (instance method)">#<strong>execute</strong>(*args) ⇒ Array </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#initialize-instance_method" title="#initialize (instance method)">#<strong>initialize</strong>(task, opts = {}) ⇒ SafeTaskExecutor </a>
</span>
<span class="note title constructor">constructor</span>
<span class="summary_desc"><div class='inline'><p>A new instance of SafeTaskExecutor.</p>
</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>(task, opts = {}) ⇒ <tt><span class='object_link'><a href="" title="Concurrent::SafeTaskExecutor (class)">SafeTaskExecutor</a></span></tt>
</h3><div class="docstring">
<div class="discussion">
<p>Returns a new instance of SafeTaskExecutor</p>
</div>
</div>
<div class="tags">
</div><table class="source_code">
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<td>
<pre class="lines">
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</td>
<td>
<pre class="code"><span class="info file"># File 'lib/concurrent/executor/safe_task_executor.rb', line 11</span>
<span class='kw'>def</span> <span class='id identifier rubyid_initialize'>initialize</span><span class='lparen'>(</span><span class='id identifier rubyid_task'>task</span><span class='comma'>,</span> <span class='id identifier rubyid_opts'>opts</span> <span class='op'>=</span> <span class='lbrace'>{</span><span class='rbrace'>}</span><span class='rparen'>)</span>
<span class='ivar'>@task</span> <span class='op'>=</span> <span class='id identifier rubyid_task'>task</span>
<span class='ivar'>@exception_class</span> <span class='op'>=</span> <span class='id identifier rubyid_opts'>opts</span><span class='period'>.</span><span class='id identifier rubyid_fetch'>fetch</span><span class='lparen'>(</span><span class='symbol'>:rescue_exception</span><span class='comma'>,</span> <span class='kw'>false</span><span class='rparen'>)</span> <span class='op'>?</span> <span class='const'>Exception</span> <span class='op'>:</span> <span class='const'>StandardError</span>
<span class='kw'>super</span><span class='lparen'>(</span><span class='rparen'>)</span> <span class='comment'># ensures visibility
</span><span class='kw'>end</span></pre>
</td>
</tr>
</table>
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</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="execute-instance_method">
#<strong>execute</strong>(*args) ⇒ <tt><span class='object_link'><a href="Array.html" title="Concurrent::Array (class)">Array</a></span></tt>
</h3><div class="docstring">
<div class="discussion">
</div>
</div>
<div class="tags">
<p class="tag_title">Returns:</p>
<ul class="return">
<li>
<span class='type'>(<tt><span class='object_link'><a href="Array.html" title="Concurrent::Array (class)">Array</a></span></tt>)</span>
</li>
</ul>
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<pre class="lines">
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<td>
<pre class="code"><span class="info file"># File 'lib/concurrent/executor/safe_task_executor.rb', line 18</span>
<span class='kw'>def</span> <span class='id identifier rubyid_execute'>execute</span><span class='lparen'>(</span><span class='op'>*</span><span class='id identifier rubyid_args'>args</span><span class='rparen'>)</span>
<span class='id identifier rubyid_synchronize'>synchronize</span> <span class='kw'>do</span>
<span class='id identifier rubyid_success'>success</span> <span class='op'>=</span> <span class='kw'>false</span>
<span class='id identifier rubyid_value'>value</span> <span class='op'>=</span> <span class='id identifier rubyid_reason'>reason</span> <span class='op'>=</span> <span class='kw'>nil</span>
<span class='kw'>begin</span>
<span class='id identifier rubyid_value'>value</span> <span class='op'>=</span> <span class='ivar'>@task</span><span class='period'>.</span><span class='id identifier rubyid_call'>call</span><span class='lparen'>(</span><span class='op'>*</span><span class='id identifier rubyid_args'>args</span><span class='rparen'>)</span>
<span class='id identifier rubyid_success'>success</span> <span class='op'>=</span> <span class='kw'>true</span>
<span class='kw'>rescue</span> <span class='ivar'>@exception_class</span> <span class='op'>=></span> <span class='id identifier rubyid_ex'>ex</span>
<span class='id identifier rubyid_reason'>reason</span> <span class='op'>=</span> <span class='id identifier rubyid_ex'>ex</span>
<span class='id identifier rubyid_success'>success</span> <span class='op'>=</span> <span class='kw'>false</span>
<span class='kw'>end</span>
<span class='lbracket'>[</span><span class='id identifier rubyid_success'>success</span><span class='comma'>,</span> <span class='id identifier rubyid_value'>value</span><span class='comma'>,</span> <span class='id identifier rubyid_reason'>reason</span><span class='rbracket'>]</span>
<span class='kw'>end</span>
<span class='kw'>end</span></pre>
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