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| <div id="overview"><a href="../../../../../apidocs/org/trafodion/dcs/script/ScriptManager.html">View Javadoc</a></div><pre> |
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|
| <a class="jxr_linenumber" name="1" href="#1">1</a> <em class="jxr_javadoccomment">/**</em>
|
| <a class="jxr_linenumber" name="2" href="#2">2</a> <em class="jxr_javadoccomment">* @@@ START COPYRIGHT @@@</em>
|
| <a class="jxr_linenumber" name="3" href="#3">3</a>
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| <a class="jxr_linenumber" name="4" href="#4">4</a> <em class="jxr_javadoccomment">Licensed to the Apache Software Foundation (ASF) under one</em>
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| <a class="jxr_linenumber" name="5" href="#5">5</a> <em class="jxr_javadoccomment">or more contributor license agreements. See the NOTICE file</em>
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| <a class="jxr_linenumber" name="6" href="#6">6</a> <em class="jxr_javadoccomment">distributed with this work for additional information</em>
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| <a class="jxr_linenumber" name="7" href="#7">7</a> <em class="jxr_javadoccomment">regarding copyright ownership. The ASF licenses this file</em>
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| <a class="jxr_linenumber" name="8" href="#8">8</a> <em class="jxr_javadoccomment">to you under the Apache License, Version 2.0 (the</em>
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| <a class="jxr_linenumber" name="9" href="#9">9</a> <em class="jxr_javadoccomment">"License"); you may not use this file except in compliance</em>
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| <a class="jxr_linenumber" name="10" href="#10">10</a> <em class="jxr_javadoccomment">with the License. You may obtain a copy of the License at</em>
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| <a class="jxr_linenumber" name="11" href="#11">11</a>
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| <a class="jxr_linenumber" name="12" href="#12">12</a> <em class="jxr_javadoccomment"> <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
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| <a class="jxr_linenumber" name="13" href="#13">13</a>
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| <a class="jxr_linenumber" name="14" href="#14">14</a> <em class="jxr_javadoccomment">Unless required by applicable law or agreed to in writing,</em>
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| <a class="jxr_linenumber" name="15" href="#15">15</a> <em class="jxr_javadoccomment">software distributed under the License is distributed on an</em>
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| <a class="jxr_linenumber" name="16" href="#16">16</a> <em class="jxr_javadoccomment">"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em>
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| <a class="jxr_linenumber" name="17" href="#17">17</a> <em class="jxr_javadoccomment">KIND, either express or implied. See the License for the</em>
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| <a class="jxr_linenumber" name="18" href="#18">18</a> <em class="jxr_javadoccomment">specific language governing permissions and limitations</em>
|
| <a class="jxr_linenumber" name="19" href="#19">19</a> <em class="jxr_javadoccomment">under the License.</em>
|
| <a class="jxr_linenumber" name="20" href="#20">20</a>
|
| <a class="jxr_linenumber" name="21" href="#21">21</a> <em class="jxr_javadoccomment">* @@@ END COPYRIGHT @@@</em>
|
| <a class="jxr_linenumber" name="22" href="#22">22</a> <em class="jxr_javadoccomment"> */</em>
|
| <a class="jxr_linenumber" name="23" href="#23">23</a> <strong class="jxr_keyword">package</strong> org.trafodion.dcs.script;
|
| <a class="jxr_linenumber" name="24" href="#24">24</a>
|
| <a class="jxr_linenumber" name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> java.util.List;
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| <a class="jxr_linenumber" name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> java.util.HashMap;
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| <a class="jxr_linenumber" name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> java.util.Map;
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| <a class="jxr_linenumber" name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> java.io.File;
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| <a class="jxr_linenumber" name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> java.io.FileNotFoundException;
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| <a class="jxr_linenumber" name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> java.io.FileReader;
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| <a class="jxr_linenumber" name="31" href="#31">31</a> <strong class="jxr_keyword">import</strong> java.io.FilenameFilter;
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| <a class="jxr_linenumber" name="32" href="#32">32</a> <strong class="jxr_keyword">import</strong> javax.script.ScriptEngine;
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| <a class="jxr_linenumber" name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> javax.script.ScriptEngineFactory;
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| <a class="jxr_linenumber" name="34" href="#34">34</a> <strong class="jxr_keyword">import</strong> javax.script.ScriptEngineManager;
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| <a class="jxr_linenumber" name="35" href="#35">35</a> <strong class="jxr_keyword">import</strong> javax.script.ScriptException;
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| <a class="jxr_linenumber" name="36" href="#36">36</a> <strong class="jxr_keyword">import</strong> javax.script.CompiledScript;
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| <a class="jxr_linenumber" name="37" href="#37">37</a> <strong class="jxr_keyword">import</strong> javax.script.Compilable;
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| <a class="jxr_linenumber" name="38" href="#38">38</a> <strong class="jxr_keyword">import</strong> javax.script.Bindings;
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| <a class="jxr_linenumber" name="39" href="#39">39</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.Logger;
|
| <a class="jxr_linenumber" name="40" href="#40">40</a> <strong class="jxr_keyword">import</strong> org.apache.commons.logging.Log;
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| <a class="jxr_linenumber" name="41" href="#41">41</a> <strong class="jxr_keyword">import</strong> org.apache.commons.logging.LogFactory;
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| <a class="jxr_linenumber" name="42" href="#42">42</a>
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| <a class="jxr_linenumber" name="43" href="#43">43</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/script/ScriptManager.html">ScriptManager</a> {
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| <a class="jxr_linenumber" name="44" href="#44">44</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <a href="../../../../org/trafodion/dcs/script/ScriptManager.html">ScriptManager</a> instance = <strong class="jxr_keyword">null</strong>;
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| <a class="jxr_linenumber" name="45" href="#45">45</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(ScriptManager.<strong class="jxr_keyword">class</strong>.getName());
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| <a class="jxr_linenumber" name="46" href="#46">46</a> <strong class="jxr_keyword">private</strong> ScriptEngineManager manager = <strong class="jxr_keyword">new</strong> ScriptEngineManager();
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| <a class="jxr_linenumber" name="47" href="#47">47</a> <strong class="jxr_keyword">private</strong> Map<String, CompiledScript> m = <strong class="jxr_keyword">new</strong> HashMap<String, CompiledScript>();
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| <a class="jxr_linenumber" name="48" href="#48">48</a> <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/script/ScriptManagerWatcher.html">ScriptManagerWatcher</a> watcherWorker = <strong class="jxr_keyword">null</strong>;
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| <a class="jxr_linenumber" name="49" href="#49">49</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String PYTHON_SUFFIX = <span class="jxr_string">".py"</span>;
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| <a class="jxr_linenumber" name="50" href="#50">50</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String DEFAULT_SCRIPT_NAME = <span class="jxr_string">"sys_shell"</span> + PYTHON_SUFFIX;
|
| <a class="jxr_linenumber" name="51" href="#51">51</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> String dcsHome = <strong class="jxr_keyword">null</strong>;
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| <a class="jxr_linenumber" name="52" href="#52">52</a>
|
| <a class="jxr_linenumber" name="53" href="#53">53</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">static</strong> <a href="../../../../org/trafodion/dcs/script/ScriptManager.html">ScriptManager</a> getInstance() {
|
| <a class="jxr_linenumber" name="54" href="#54">54</a> <strong class="jxr_keyword">if</strong>(instance == <strong class="jxr_keyword">null</strong>) {
|
| <a class="jxr_linenumber" name="55" href="#55">55</a> instance = <strong class="jxr_keyword">new</strong> <a href="../../../../org/trafodion/dcs/script/ScriptManager.html">ScriptManager</a>();
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| <a class="jxr_linenumber" name="56" href="#56">56</a> }
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| <a class="jxr_linenumber" name="57" href="#57">57</a> <strong class="jxr_keyword">return</strong> instance;
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| <a class="jxr_linenumber" name="58" href="#58">58</a> }
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| <a class="jxr_linenumber" name="59" href="#59">59</a>
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| <a class="jxr_linenumber" name="60" href="#60">60</a> <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/script/ScriptManager.html">ScriptManager</a>() {
|
| <a class="jxr_linenumber" name="61" href="#61">61</a> List<ScriptEngineFactory> engines = manager.getEngineFactories();
|
| <a class="jxr_linenumber" name="62" href="#62">62</a> <strong class="jxr_keyword">if</strong> (engines.isEmpty()) {
|
| <a class="jxr_linenumber" name="63" href="#63">63</a> LOG.warn(<span class="jxr_string">"No scripting engines were found"</span>);
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| <a class="jxr_linenumber" name="64" href="#64">64</a> <strong class="jxr_keyword">return</strong>;
|
| <a class="jxr_linenumber" name="65" href="#65">65</a> }
|
| <a class="jxr_linenumber" name="66" href="#66">66</a>
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| <a class="jxr_linenumber" name="67" href="#67">67</a> StringBuffer sb = <strong class="jxr_keyword">new</strong> StringBuffer();
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| <a class="jxr_linenumber" name="68" href="#68">68</a> sb.append(<span class="jxr_string">"\nThe following "</span> + engines.size() + <span class="jxr_string">" scripting engine(s) were found"</span>);
|
| <a class="jxr_linenumber" name="69" href="#69">69</a>
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| <a class="jxr_linenumber" name="70" href="#70">70</a> <strong class="jxr_keyword">for</strong> (ScriptEngineFactory engine : engines) {
|
| <a class="jxr_linenumber" name="71" href="#71">71</a> sb.append(<span class="jxr_string">"\nEngine name: "</span> + engine.getEngineName() + <span class="jxr_string">"\nVersion: "</span> + engine.getEngineVersion()+ <span class="jxr_string">"\nLanguage: "</span> + engine.getLanguageName());
|
| <a class="jxr_linenumber" name="72" href="#72">72</a> List<String> extensions = engine.getExtensions();
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| <a class="jxr_linenumber" name="73" href="#73">73</a> <strong class="jxr_keyword">if</strong> (extensions.size() > 0) {
|
| <a class="jxr_linenumber" name="74" href="#74">74</a> sb.append(<span class="jxr_string">"\n\tEngine supports the following extensions:"</span>);
|
| <a class="jxr_linenumber" name="75" href="#75">75</a> <strong class="jxr_keyword">for</strong> (String e : extensions) {
|
| <a class="jxr_linenumber" name="76" href="#76">76</a> sb.append(<span class="jxr_string">"\n\t\t"</span> + e);
|
| <a class="jxr_linenumber" name="77" href="#77">77</a> }
|
| <a class="jxr_linenumber" name="78" href="#78">78</a> }
|
| <a class="jxr_linenumber" name="79" href="#79">79</a> List<String> shortNames = engine.getNames();
|
| <a class="jxr_linenumber" name="80" href="#80">80</a> <strong class="jxr_keyword">if</strong> (shortNames.size() > 0) {
|
| <a class="jxr_linenumber" name="81" href="#81">81</a> sb.append(<span class="jxr_string">"\n\tEngine has the following short names:"</span>);
|
| <a class="jxr_linenumber" name="82" href="#82">82</a> <strong class="jxr_keyword">for</strong> (String n : engine.getNames()) {
|
| <a class="jxr_linenumber" name="83" href="#83">83</a> sb.append(<span class="jxr_string">"\n\t\t"</span> + n);
|
| <a class="jxr_linenumber" name="84" href="#84">84</a> }
|
| <a class="jxr_linenumber" name="85" href="#85">85</a> }
|
| <a class="jxr_linenumber" name="86" href="#86">86</a>
|
| <a class="jxr_linenumber" name="87" href="#87">87</a> String [] params =
|
| <a class="jxr_linenumber" name="88" href="#88">88</a> {
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| <a class="jxr_linenumber" name="89" href="#89">89</a> ScriptEngine.ENGINE,
|
| <a class="jxr_linenumber" name="90" href="#90">90</a> ScriptEngine.ENGINE_VERSION,
|
| <a class="jxr_linenumber" name="91" href="#91">91</a> ScriptEngine.LANGUAGE,
|
| <a class="jxr_linenumber" name="92" href="#92">92</a> ScriptEngine.LANGUAGE_VERSION,
|
| <a class="jxr_linenumber" name="93" href="#93">93</a> ScriptEngine.NAME,
|
| <a class="jxr_linenumber" name="94" href="#94">94</a> <span class="jxr_string">"THREADING"</span>
|
| <a class="jxr_linenumber" name="95" href="#95">95</a> };
|
| <a class="jxr_linenumber" name="96" href="#96">96</a>
|
| <a class="jxr_linenumber" name="97" href="#97">97</a> sb.append(<span class="jxr_string">"\n\tEngine has the following parameters:"</span>);
|
| <a class="jxr_linenumber" name="98" href="#98">98</a> <strong class="jxr_keyword">for</strong> (String param: params){
|
| <a class="jxr_linenumber" name="99" href="#99">99</a> sb.append(<span class="jxr_string">"\n\t\t"</span> + param + <span class="jxr_string">" = "</span> + engine.getParameter(param));
|
| <a class="jxr_linenumber" name="100" href="#100">100</a> }
|
| <a class="jxr_linenumber" name="101" href="#101">101</a> sb.append(<span class="jxr_string">"\n========================="</span>);
|
| <a class="jxr_linenumber" name="102" href="#102">102</a> }
|
| <a class="jxr_linenumber" name="103" href="#103">103</a> LOG.debug(sb.toString());
|
| <a class="jxr_linenumber" name="104" href="#104">104</a>
|
| <a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_comment">//Get -Ddcs.home.dir</em>
|
| <a class="jxr_linenumber" name="106" href="#106">106</a> dcsHome = System.getProperty(<span class="jxr_string">"dcs.home.dir"</span>);
|
| <a class="jxr_linenumber" name="107" href="#107">107</a>
|
| <a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_comment">//Start the scripts directory watcher</em>
|
| <a class="jxr_linenumber" name="109" href="#109">109</a> watcherWorker = <strong class="jxr_keyword">new</strong> <a href="../../../../org/trafodion/dcs/script/ScriptManagerWatcher.html">ScriptManagerWatcher</a> (<span class="jxr_string">"ScriptManagerWatcher"</span>,dcsHome + <span class="jxr_string">"/bin/scripts"</span>);
|
| <a class="jxr_linenumber" name="110" href="#110">110</a> }
|
| <a class="jxr_linenumber" name="111" href="#111">111</a>
|
| <a class="jxr_linenumber" name="112" href="#112">112</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> runScript(<a href="../../../../org/trafodion/dcs/script/ScriptContext.html">ScriptContext</a> ctx) {
|
| <a class="jxr_linenumber" name="113" href="#113">113</a> String scriptName;
|
| <a class="jxr_linenumber" name="114" href="#114">114</a>
|
| <a class="jxr_linenumber" name="115" href="#115">115</a> <strong class="jxr_keyword">if</strong>(ctx.getScriptName().length() == 0)
|
| <a class="jxr_linenumber" name="116" href="#116">116</a> scriptName = DEFAULT_SCRIPT_NAME;
|
| <a class="jxr_linenumber" name="117" href="#117">117</a> <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong>(! ctx.getScriptName().endsWith(<span class="jxr_string">".py"</span>))
|
| <a class="jxr_linenumber" name="118" href="#118">118</a> scriptName = ctx.getScriptName() + PYTHON_SUFFIX;
|
| <a class="jxr_linenumber" name="119" href="#119">119</a> <strong class="jxr_keyword">else</strong>
|
| <a class="jxr_linenumber" name="120" href="#120">120</a> scriptName = ctx.getScriptName();
|
| <a class="jxr_linenumber" name="121" href="#121">121</a>
|
| <a class="jxr_linenumber" name="122" href="#122">122</a> <strong class="jxr_keyword">try</strong> {
|
| <a class="jxr_linenumber" name="123" href="#123">123</a> ScriptEngine engine = manager.getEngineByName(<span class="jxr_string">"python"</span>);
|
| <a class="jxr_linenumber" name="124" href="#124">124</a> Bindings bindings = engine.createBindings();
|
| <a class="jxr_linenumber" name="125" href="#125">125</a> bindings.put(<span class="jxr_string">"scriptcontext"</span>, ctx);
|
| <a class="jxr_linenumber" name="126" href="#126">126</a> <strong class="jxr_keyword">if</strong>(engine instanceof Compilable) {
|
| <a class="jxr_linenumber" name="127" href="#127">127</a> CompiledScript script = m.get(scriptName);
|
| <a class="jxr_linenumber" name="128" href="#128">128</a> <strong class="jxr_keyword">if</strong>(script == <strong class="jxr_keyword">null</strong>) {
|
| <a class="jxr_linenumber" name="129" href="#129">129</a> LOG.info(<span class="jxr_string">"Compiling script "</span> + scriptName);
|
| <a class="jxr_linenumber" name="130" href="#130">130</a> Compilable compilingEngine = (Compilable)engine;
|
| <a class="jxr_linenumber" name="131" href="#131">131</a> <strong class="jxr_keyword">try</strong> {
|
| <a class="jxr_linenumber" name="132" href="#132">132</a> script = compilingEngine.compile(<strong class="jxr_keyword">new</strong> FileReader(dcsHome + <span class="jxr_string">"/bin/scripts/"</span> + scriptName));
|
| <a class="jxr_linenumber" name="133" href="#133">133</a> } <strong class="jxr_keyword">catch</strong> (Exception e) {
|
| <a class="jxr_linenumber" name="134" href="#134">134</a> LOG.warn(e.getMessage());
|
| <a class="jxr_linenumber" name="135" href="#135">135</a> }
|
| <a class="jxr_linenumber" name="136" href="#136">136</a> m.put(scriptName, script);
|
| <a class="jxr_linenumber" name="137" href="#137">137</a> }
|
| <a class="jxr_linenumber" name="138" href="#138">138</a> script.eval(bindings);
|
| <a class="jxr_linenumber" name="139" href="#139">139</a> } <strong class="jxr_keyword">else</strong> {
|
| <a class="jxr_linenumber" name="140" href="#140">140</a> <strong class="jxr_keyword">try</strong> {
|
| <a class="jxr_linenumber" name="141" href="#141">141</a> engine.eval(<strong class="jxr_keyword">new</strong> FileReader(dcsHome + <span class="jxr_string">"/bin/scripts/"</span> + scriptName), bindings);
|
| <a class="jxr_linenumber" name="142" href="#142">142</a> } <strong class="jxr_keyword">catch</strong> (Exception e) {
|
| <a class="jxr_linenumber" name="143" href="#143">143</a> LOG.warn(e.getMessage());
|
| <a class="jxr_linenumber" name="144" href="#144">144</a> }
|
| <a class="jxr_linenumber" name="145" href="#145">145</a> }
|
| <a class="jxr_linenumber" name="146" href="#146">146</a> } <strong class="jxr_keyword">catch</strong> (javax.script.ScriptException se) {
|
| <a class="jxr_linenumber" name="147" href="#147">147</a> LOG.warn(se.getMessage());
|
| <a class="jxr_linenumber" name="148" href="#148">148</a> }
|
| <a class="jxr_linenumber" name="149" href="#149">149</a> }
|
| <a class="jxr_linenumber" name="150" href="#150">150</a>
|
| <a class="jxr_linenumber" name="151" href="#151">151</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> removeScript(String name) {
|
| <a class="jxr_linenumber" name="152" href="#152">152</a> m.remove(name);
|
| <a class="jxr_linenumber" name="153" href="#153">153</a> }
|
| <a class="jxr_linenumber" name="154" href="#154">154</a> }
|
| <a class="jxr_linenumber" name="155" href="#155">155</a>
|
| <a class="jxr_linenumber" name="156" href="#156">156</a>
|
| <a class="jxr_linenumber" name="157" href="#157">157</a>
|
| <a class="jxr_linenumber" name="158" href="#158">158</a>
|
| <a class="jxr_linenumber" name="159" href="#159">159</a>
|
| <a class="jxr_linenumber" name="160" href="#160">160</a>
|
| <a class="jxr_linenumber" name="161" href="#161">161</a>
|
| </pre> |
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