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<title>find_free_mac (CondorCloud::ConfServerIPAgent)</title>
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<pre><span class="ruby-comment cmt"># File lib/deltacloud/drivers/condor/ip_agents/confserver.rb, line 47</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">find_free_mac</span>
<span class="ruby-identifier">addr_hash</span> = {}
<span class="ruby-constant">DefaultExecutor</span><span class="ruby-operator">::</span><span class="ruby-identifier">new</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">executor</span><span class="ruby-operator">|</span>
<span class="ruby-comment cmt"># Make an CondorAddress hash to speed up the inner loop.</span>
<span class="ruby-constant">CondorAddresses</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">address</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">addr_hash</span>[<span class="ruby-identifier">address</span>.<span class="ruby-identifier">mac</span>] = <span class="ruby-identifier">address</span>.<span class="ruby-identifier">ip</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-identifier">executor</span>.<span class="ruby-identifier">instances</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">instance</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">instance</span>.<span class="ruby-identifier">public_CondorAddresses</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">public_CondorAddress</span><span class="ruby-operator">|</span>
<span class="ruby-keyword kw">if</span> <span class="ruby-identifier">addr_hash</span>.<span class="ruby-identifier">key?</span>(<span class="ruby-identifier">public_CondorAddress</span>.<span class="ruby-identifier">mac</span>)
<span class="ruby-identifier">addr_hash</span>.<span class="ruby-identifier">delete</span>(<span class="ruby-identifier">public_CondorAddress</span>.<span class="ruby-identifier">mac</span>)
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-identifier">raise</span> <span class="ruby-value str">"No available MACs to assign to instance."</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">addr_hash</span>.<span class="ruby-identifier">empty?</span>
<span class="ruby-keyword kw">return</span> <span class="ruby-identifier">addr_hash</span>.<span class="ruby-identifier">keys</span>.<span class="ruby-identifier">first</span>
<span class="ruby-keyword kw">end</span></pre>
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