2009-02-06 09:17:59 +00:00
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<html>
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<head>
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<meta http-equiv="Content-Language" content="en-us">
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<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
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<title>HostInfo Task</title>
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</head>
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<body>
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<h2><a name="hostinfo">HostInfo</a></h2>
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<h3>Description</h3>
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<p>Sets the <code>NAME</code>, <code>DOMAIN</code>, <code>ADDR4</code>, and <code>ADDR6</code>
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properties in the current project.</p>
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<p>
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The <code>NAME</code> contains the host part of the canonical name of the host.<br/>
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If the host is not found, the host will contain the name as provided to the task,
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or <code>localhost</code> if no host was provided, and no name for the local
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host was found.<br/>
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The <code>DOMAIN</code> contains the domain part of the canonical name of the host.<br/>
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If the host is not found, the domain will contain the domain as provided to the task,
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or <code>localdomain</code> if no host / domain was provided.<br/>
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The <code>ADDR4</code> contains the IPv4 address of the host with the widest meaning.<br/>
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If no IPv4 address is found and a host has been provided the address <code>0.0.0.0</code>
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is returned, when no host was provided the address <code>127.0.0.1</code> is returned.<br/>
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The <code>ADDR6</code> contains the IPv6 address of the host with the widest meaning.<br/>
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If no IPv6 address is found and a host has been provided the address <code>::</code>
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is returned, when no host was provided the address <code>::1</code> is returned.<br/>
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</p>
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<p>These properties can be used in the build-file, for instance, to create
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host-stamped filenames, or used to replace placeholder tags inside documents
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to indicate, for example, the host where the build was performed on.
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The best place for this task is probably in an initialization target.</p>
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<h3>Parameters</h3>
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<table border="1" cellpadding="2" cellspacing="0">
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<tr>
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<td valign="top"><b>Attribute</b></td>
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<td valign="top"><b>Description</b></td>
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<td align="center" valign="top"><b>Required</b></td>
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</tr>
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<tr>
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<td valign="top">prefix</td>
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<td valign="top">Prefix used for all properties set. The default is no prefix.</td>
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<td align="center" valign="top">No</td>
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</tr>
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<tr>
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<td valign="top">host</td>
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<td valign="top">
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The host to retrieve the information for, default is to retrieve
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information for the host the task is running on.
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</td>
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<td align="center" valign="top">No</td>
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</tr>
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</table>
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<h3>Examples</h3>
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<pre>
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<hostinfo/>
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</pre>
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<p>
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Sets the <code>NAME</code>, <code>DOMAIN</code>, <code>ADDR4</code>, and
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<code>ADDR6</code> for the local host, using the most "global" address
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available.</p>
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<pre>
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<hostinfo prefix="remotehost" host="www.apache.org"/>
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</pre>
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<p>
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Sets the properties <code>remotehost.NAME</code> to <code>eos</code>,
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<code>remotehost.DOMAIN</code> to <code>apache.org</code>,
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<code>remotehost.ADDR4</code> to <code>140.211.11.130</code> and
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<code>remotehost.ADDR6</code> to <code>::</code>
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for the host with the name www.apache.org (provided the canonical name and ip
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addresses do not change).
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</p>
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</body>
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</html>
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