Mercurial Hosting > luan
annotate src/luan/modules/http/LuanHandler.java @ 791:ca81307adf7c
set thread name in LuanHandler
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Sun, 04 Sep 2016 21:26:17 -0600 |
parents | fe63c508a177 |
children | 9eccfede1094 |
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change luan:web to luan:http
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1 package luan.modules.http; |
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2 |
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3 import java.io.IOException; |
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4 import java.lang.reflect.Method; |
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5 import java.util.concurrent.locks.ReadWriteLock; |
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6 import java.util.concurrent.locks.ReentrantReadWriteLock; |
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7 import javax.servlet.ServletException; |
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8 import javax.servlet.http.HttpServlet; |
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9 import javax.servlet.http.HttpServletRequest; |
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10 import javax.servlet.http.HttpServletResponse; |
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11 import org.slf4j.Logger; |
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12 import org.slf4j.LoggerFactory; |
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13 import org.eclipse.jetty.server.Request; |
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14 import org.eclipse.jetty.server.handler.AbstractHandler; |
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15 import luan.Luan; |
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16 import luan.LuanState; |
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17 import luan.LuanTable; |
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18 import luan.LuanFunction; |
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19 import luan.LuanJavaFunction; |
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20 import luan.LuanCloner; |
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21 import luan.LuanException; |
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22 import luan.modules.PackageLuan; |
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23 |
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24 |
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25 public class LuanHandler extends AbstractHandler { |
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26 private final LuanState luanInit; |
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27 private final Logger logger; |
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28 private String welcomeFile = "index.html"; |
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29 private final ReadWriteLock lock = new ReentrantReadWriteLock(); |
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30 private LuanState luan; |
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31 |
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32 private static final Method resetLuanMethod; |
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33 static { |
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34 try { |
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35 resetLuanMethod = LuanHandler.class.getMethod("reset_luan"); |
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36 } catch(NoSuchMethodException e) { |
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37 throw new RuntimeException(e); |
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38 } |
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39 } |
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40 |
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41 public LuanHandler(LuanState luan,String loggerRoot) { |
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42 this.luanInit = luan; |
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43 if( loggerRoot==null ) |
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44 loggerRoot = ""; |
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45 logger = LoggerFactory.getLogger(loggerRoot+LuanHandler.class.getName()); |
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46 try { |
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47 LuanTable Http = (LuanTable)PackageLuan.require(luanInit,"luan:http/Http.luan"); |
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48 Http.rawPut( "reset_luan", new LuanJavaFunction(resetLuanMethod,this) ); |
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49 } catch(LuanException e) { |
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50 throw new RuntimeException(e); |
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51 } |
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52 } |
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53 |
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54 @Override public void handle(String target,Request baseRequest,HttpServletRequest request,HttpServletResponse response) |
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55 throws IOException |
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56 { |
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57 if( target.endsWith("/") ) |
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58 target += welcomeFile; |
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59 Thread thread = Thread.currentThread(); |
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60 String oldName = thread.getName(); |
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61 thread.setName(request.getHeader("host")+request.getRequestURI()); |
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62 lock.readLock().lock(); |
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63 try { |
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64 if( !HttpServicer.service(luan,request,response,"site:"+target+".luan") ) |
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65 return; |
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66 } catch(LuanException e) { |
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67 //e.printStackTrace(); |
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68 String err = e.getFullMessage(); |
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69 logger.error(err); |
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70 response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,err); |
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71 } finally { |
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72 lock.readLock().unlock(); |
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73 thread.setName(oldName); |
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74 } |
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75 baseRequest.setHandled(true); |
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76 } |
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77 |
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78 public void setWelcomeFile(String welcomeFile) { |
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79 this.welcomeFile = welcomeFile; |
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80 } |
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81 |
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82 @Override protected void doStart() throws Exception { |
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83 // Thread.dumpStack(); |
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84 //System.out.println("qqqqqqqqqqqqqqqqqqqq doStart "+this); |
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85 setLuan(); |
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86 super.doStart(); |
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87 } |
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88 |
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89 @Override protected void doStop() throws Exception { |
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90 synchronized(luan) { |
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91 luan.close(); |
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92 } |
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93 //System.out.println("qqqqqqqqqqqqqqqqqqqq doStop "+this); |
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94 super.doStop(); |
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95 } |
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96 /* |
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97 @Override public void destroy() { |
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98 System.out.println("qqqqqqqqqqqqqqqqqqqq destroy "+this); |
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99 super.destroy(); |
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100 } |
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101 */ |
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102 |
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103 public Object call_rpc(String fnName,Object... args) throws LuanException { |
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104 LuanState luan = this.luan; |
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105 synchronized(luan) { |
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106 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE); |
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107 luan = (LuanState)cloner.clone(luan); |
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108 } |
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109 LuanTable rpc = (LuanTable)PackageLuan.require(luan,"luan:Rpc.luan"); |
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110 LuanTable fns = (LuanTable)rpc.get(luan,"functions"); |
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111 LuanFunction fn = (LuanFunction)fns.get(luan,fnName); |
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112 if( fn == null ) |
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113 throw new LuanException( "function not found: " + fnName ); |
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114 return fn.call(luan,args); |
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115 } |
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116 |
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117 public void reset_luan() { |
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118 new Thread() { |
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119 public void run() { |
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120 lock.writeLock().lock(); |
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121 try { |
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122 synchronized(luan) { |
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123 luan.close(); |
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124 setLuan(); |
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125 } |
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126 } catch(IOException e) { |
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127 logger.error("reset_luan failed",e); |
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128 } finally { |
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129 lock.writeLock().unlock(); |
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130 } |
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131 } |
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132 }.start(); |
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133 } |
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134 |
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135 private void setLuan() { |
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136 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE); |
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137 luan = (LuanState)cloner.clone(luanInit); |
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138 try { |
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139 PackageLuan.load(luan,"site:/init.luan"); |
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140 } catch(LuanException e) { |
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141 String err = e.getFullMessage(); |
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142 logger.error(err); |
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143 } |
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144 } |
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145 |
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146 public Object runLuan(String sourceText,String sourceName) throws LuanException { |
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147 LuanFunction fn = Luan.load(sourceText,sourceName); |
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148 synchronized(luan) { |
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149 return fn.call(luan); |
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150 } |
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151 } |
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152 |
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153 } |