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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<head>
<title>: Net::SSH::Multi::Subsession [Control multiple Net::SSH connections via a single interface.]</title>
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<div class='header'>
<h1 class='name'>
<span class='type'>Class</span>
Net::SSH::Multi::Subsession
</h1>
<ol class='paths'>
<li>
<a href="../../../../files/lib/net/ssh/multi/subsession_rb.html">lib/net/ssh/multi/subsession.rb</a>
</li>
</ol>
<div class='parent'>
Parent:
<strong>Object</strong>
</div>
</div>
<div id='content'>
<div id='text'>
<div id='description'>
<p>
A trivial class for representing a subset of servers. It is used internally
for restricting operations to a subset of all defined servers.
</p>
<pre>subsession = session.with(:app)
subsession.exec("hostname")</pre>
</div>
<div id='method-list'>
<h2>Methods</h2>
<h3>public class</h3>
<ol>
<li><a href="#M000078">new</a></li>
</ol>
<h3>public instance</h3>
<ol>
<li><a href="#M000080">first</a></li>
<li><a href="#M000079">slice</a></li>
</ol>
</div>
<div id='context'>
<div id='includes'>
<h2>Included modules</h2>
<ol>
<li><a href="SessionActions.html">SessionActions</a></li>
</ol>
</div>
</div>
<div id='section'>
<div id='attribute-list'>
<h2 class='section-bar'>Attributes</h2>
<div class='name-list'>
<table>
<tr class='top-aligned-row context-row'>
<td class='context-item-name'>master</td>
<td class='context-item-value'>[R]</td>
<td class='context-item-desc'>
The master session that spawned this subsession.
</td>
</tr>
<tr class='top-aligned-row context-row'>
<td class='context-item-name'>servers</td>
<td class='context-item-value'>[R]</td>
<td class='context-item-desc'>
The list of servers that this subsession can operate on.
</td>
</tr>
</table>
</div>
</div>
<div id='methods'>
<h2>Public class methods</h2>
<div class='method public-class' id='method-M000078'>
<a name='M000078'> </a>
<div class='synopsis'>
<span class='name'>new</span>
<span class='arguments'>(master, server_list)</span>
</div>
<div class='description'>
<p>
Create a new subsession of the given <tt>master</tt> session, that operates
on the given <tt>server_list</tt>.
</p>
</div>
<div class='source'>
<a class='source-toggle' href='#' onclick="toggleCode('M000078-source'); return false">
[show source]
</a>
<pre id='M000078-source'> <span class="ruby-comment cmt"># File lib/net/ssh/multi/subsession.rb, line 22</span>
22: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">initialize</span>(<span class="ruby-identifier">master</span>, <span class="ruby-identifier">server_list</span>)
23: <span class="ruby-ivar">@master</span> = <span class="ruby-identifier">master</span>
24: <span class="ruby-ivar">@servers</span> = <span class="ruby-identifier">server_list</span>.<span class="ruby-identifier">uniq</span>
25: <span class="ruby-keyword kw">end</span></pre>
</div>
</div>
<h2>Public instance methods</h2>
<div class='method public-instance' id='method-M000080'>
<a name='M000080'> </a>
<div class='synopsis'>
<span class='name'>first</span>
<span class='arguments'>()</span>
</div>
<div class='description'>
<p>
Returns a new subsession that consists of only the first server in the
server list of the current subsession. This is just convenience for
slice(0):
</p>
<pre>s1 = subsession.first</pre>
</div>
<div class='source'>
<a class='source-toggle' href='#' onclick="toggleCode('M000080-source'); return false">
[show source]
</a>
<pre id='M000080-source'> <span class="ruby-comment cmt"># File lib/net/ssh/multi/subsession.rb, line 43</span>
43: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">first</span>
44: <span class="ruby-identifier">slice</span>(<span class="ruby-value">0</span>)
45: <span class="ruby-keyword kw">end</span></pre>
</div>
</div>
<div class='method public-instance' id='method-M000079'>
<a name='M000079'> </a>
<div class='synopsis'>
<span class='name'>slice</span>
<span class='arguments'>(*args)</span>
</div>
<div class='description'>
<p>
Works as Array#slice, but returns a new subsession consisting of the given
slice of servers in this subsession. The new subsession will have the same
master session as this subsession does.
</p>
<pre>s1 = subsession.slice(0)
s2 = subsession.slice(3, -1)
s3 = subsession.slice(1..4)</pre>
</div>
<div class='source'>
<a class='source-toggle' href='#' onclick="toggleCode('M000079-source'); return false">
[show source]
</a>
<pre id='M000079-source'> <span class="ruby-comment cmt"># File lib/net/ssh/multi/subsession.rb, line 34</span>
34: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">slice</span>(<span class="ruby-operator">*</span><span class="ruby-identifier">args</span>)
35: <span class="ruby-constant">Subsession</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">master</span>, <span class="ruby-constant">Array</span>(<span class="ruby-identifier">servers</span>.<span class="ruby-identifier">slice</span>(<span class="ruby-operator">*</span><span class="ruby-identifier">args</span>)))
36: <span class="ruby-keyword kw">end</span></pre>
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