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| <h2 title="Class AbstractDNSToSwitchMapping" class="title">Class AbstractDNSToSwitchMapping</h2> |
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| <dd><a href="../../../../org/apache/storm/testing/AlternateRackDNSToSwitchMapping.html" title="class in org.apache.storm.testing">AlternateRackDNSToSwitchMapping</a>, <a href="../../../../org/apache/storm/networktopography/DefaultRackDNSToSwitchMapping.html" title="class in org.apache.storm.networktopography">DefaultRackDNSToSwitchMapping</a></dd> |
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| <pre>public abstract class <span class="typeNameLabel">AbstractDNSToSwitchMapping</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> |
| implements <a href="../../../../org/apache/storm/networktopography/DNSToSwitchMapping.html" title="interface in org.apache.storm.networktopography">DNSToSwitchMapping</a></pre> |
| <div class="block"><p>This is a base class for DNS to Switch mappings.</p><p><p>It is not mandatory to derive <a href="../../../../org/apache/storm/networktopography/DNSToSwitchMapping.html" title="interface in org.apache.storm.networktopography"><code>DNSToSwitchMapping</code></a> implementations from it, but it is strongly recommended, as it makes it easy for the developers to add new methods to this base class that are automatically picked up by all implementations.</p></div> |
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| <code><a href="../../../../org/apache/storm/networktopography/DNSToSwitchMapping.html#DEFAULT_RACK">DEFAULT_RACK</a></code></li> |
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| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/networktopography/AbstractDNSToSwitchMapping.html#AbstractDNSToSwitchMapping--">AbstractDNSToSwitchMapping</a></span>()</code> |
| <div class="block">Create an unconfigured instance.</div> |
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| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/networktopography/AbstractDNSToSwitchMapping.html#dumpTopology--">dumpTopology</a></span>()</code> |
| <div class="block">Generate a string listing the switch mapping implementation, the mapping for every known node and the number of nodes and unique switches known about -each entry to a separate line.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/networktopography/AbstractDNSToSwitchMapping.html#getSwitchMap--">getSwitchMap</a></span>()</code> |
| <div class="block">Get a copy of the map (for diagnostics).</div> |
| </td> |
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| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/networktopography/AbstractDNSToSwitchMapping.html#isSingleSwitch--">isSingleSwitch</a></span>()</code> |
| <div class="block">Predicate that indicates that the switch mapping is known to be single-switch.</div> |
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| <code><a href="../../../../org/apache/storm/networktopography/DNSToSwitchMapping.html#resolve-java.util.List-">resolve</a></code></li> |
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| <pre>protected AbstractDNSToSwitchMapping()</pre> |
| <div class="block"><p>Create an unconfigured instance.</p></div> |
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| <pre>public boolean isSingleSwitch()</pre> |
| <div class="block"><p>Predicate that indicates that the switch mapping is known to be single-switch. The base class returns false: it assumes all mappings are multi-rack. Subclasses may override this with methods that are more aware of their topologies.</p></div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the mapping thinks that it is on a single switch</dd> |
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| <pre>public <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>> getSwitchMap()</pre> |
| <div class="block"><p>Get a copy of the map (for diagnostics).</p></div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a clone of the map or null for none known</dd> |
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| <pre>public <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> dumpTopology()</pre> |
| <div class="block"><p>Generate a string listing the switch mapping implementation, the mapping for every known node and the number of nodes and unique switches known about -each entry to a separate line.</p></div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a string that can be presented to the ops team or used in debug messages.</dd> |
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