Mercurial Hosting > luan
annotate src/luan/modules/http/LuanHandler.java @ 1000:32d4b569567c
simplify handle()
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Wed, 19 Oct 2016 04:22:51 -0600 |
parents | 4de7f6e9c453 |
children | 3fa54d9d19cd |
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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.http.HttpServletResponse; |
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8 import org.slf4j.Logger; |
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9 import org.slf4j.LoggerFactory; |
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10 import org.eclipse.jetty.server.Request; |
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11 import org.eclipse.jetty.server.handler.AbstractHandler; |
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12 import luan.Luan; |
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13 import luan.LuanState; |
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14 import luan.LuanTable; |
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15 import luan.LuanFunction; |
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16 import luan.LuanJavaFunction; |
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17 import luan.LuanCloner; |
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18 import luan.LuanException; |
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19 import luan.modules.PackageLuan; |
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20 |
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21 |
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22 public class LuanHandler extends AbstractHandler { |
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23 private final LuanState luanInit; |
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24 private final Logger logger; |
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25 private String welcomeFile = "index.html"; |
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26 private final ReadWriteLock lock = new ReentrantReadWriteLock(); |
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27 private LuanState luan; |
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28 |
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29 private static final Method resetLuanMethod; |
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30 static { |
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31 try { |
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32 resetLuanMethod = LuanHandler.class.getMethod("reset_luan"); |
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33 } catch(NoSuchMethodException e) { |
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34 throw new RuntimeException(e); |
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35 } |
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36 } |
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37 |
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38 public LuanHandler(LuanState luan,String loggerRoot) { |
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39 this.luanInit = luan; |
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40 if( loggerRoot==null ) |
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41 loggerRoot = ""; |
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42 logger = LoggerFactory.getLogger(loggerRoot+LuanHandler.class.getName()); |
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43 try { |
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44 LuanTable Http = (LuanTable)PackageLuan.require(luanInit,"luan:http/Http.luan"); |
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45 Http.rawPut( "reset_luan", new LuanJavaFunction(resetLuanMethod,this) ); |
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46 } catch(LuanException e) { |
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47 throw new RuntimeException(e); |
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48 } |
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49 } |
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50 |
1000 | 51 @Override |
52 public void handle(String target,Request request,HttpServletResponse response) | |
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53 throws IOException |
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54 { |
874 | 55 //Thread.dumpStack(); |
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56 if( target.endsWith("/") ) |
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57 target += welcomeFile; |
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58 Thread thread = Thread.currentThread(); |
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59 String oldName = thread.getName(); |
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60 thread.setName(request.getHeader("host")+request.getRequestURI()); |
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61 lock.readLock().lock(); |
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62 try { |
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63 if( !HttpServicer.service(luan,request,response,"site:"+target+".luan") ) |
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64 return; |
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65 } catch(LuanException e) { |
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66 //e.printStackTrace(); |
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67 String err = e.getFullMessage(); |
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68 logger.error(err); |
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69 response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,err); |
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70 } finally { |
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71 lock.readLock().unlock(); |
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72 thread.setName(oldName); |
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73 } |
1000 | 74 request.setHandled(true); |
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75 } |
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76 |
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77 public void setWelcomeFile(String welcomeFile) { |
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78 this.welcomeFile = welcomeFile; |
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79 } |
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80 |
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81 @Override protected void doStart() throws Exception { |
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82 // Thread.dumpStack(); |
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83 //System.out.println("qqqqqqqqqqqqqqqqqqqq doStart "+this); |
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84 setLuan(); |
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85 super.doStart(); |
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86 } |
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87 |
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88 @Override protected void doStop() throws Exception { |
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89 synchronized(luan) { |
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90 luan.close(); |
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91 } |
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92 //System.out.println("qqqqqqqqqqqqqqqqqqqq doStop "+this); |
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93 super.doStop(); |
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94 } |
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95 /* |
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96 @Override public void destroy() { |
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97 System.out.println("qqqqqqqqqqqqqqqqqqqq destroy "+this); |
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98 super.destroy(); |
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99 } |
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100 */ |
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101 |
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102 public Object call_rpc(String fnName,Object... args) throws LuanException { |
798 | 103 lock.readLock().lock(); |
104 try { | |
105 LuanFunction fn; | |
106 LuanState luan = this.luan; | |
107 synchronized(luan) { | |
108 PackageLuan.enableLoad(luan,"luan:Rpc.luan"); | |
109 LuanTable rpc = (LuanTable)PackageLuan.require(luan,"luan:Rpc.luan"); | |
110 LuanTable fns = (LuanTable)rpc.get(luan,"functions"); | |
111 fn = (LuanFunction)fns.get(luan,fnName); | |
112 if( fn == null ) | |
113 throw new LuanException( "function not found: " + fnName ); | |
114 LuanCloner cloner = new LuanCloner(LuanCloner.Type.INCREMENTAL); | |
115 luan = (LuanState)cloner.clone(luan); | |
116 fn = (LuanFunction)cloner.get(fn); | |
117 } | |
118 return fn.call(luan,args); | |
119 } finally { | |
120 lock.readLock().unlock(); | |
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121 } |
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122 } |
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123 |
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124 public void reset_luan() { |
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125 new Thread() { |
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126 public void run() { |
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127 lock.writeLock().lock(); |
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128 try { |
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129 synchronized(luan) { |
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130 luan.close(); |
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131 setLuan(); |
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132 } |
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133 } catch(IOException e) { |
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134 logger.error("reset_luan failed",e); |
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135 } finally { |
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136 lock.writeLock().unlock(); |
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137 } |
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138 } |
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139 }.start(); |
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140 } |
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141 |
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142 private void setLuan() { |
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143 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE); |
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144 luan = (LuanState)cloner.clone(luanInit); |
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145 try { |
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146 PackageLuan.load(luan,"site:/init.luan"); |
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147 } catch(LuanException e) { |
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148 String err = e.getFullMessage(); |
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149 logger.error(err); |
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150 } |
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151 } |
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152 |
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153 public Object runLuan(String sourceText,String sourceName) throws LuanException { |
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154 LuanFunction fn = Luan.load(sourceText,sourceName); |
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155 synchronized(luan) { |
798 | 156 LuanCloner cloner = new LuanCloner(LuanCloner.Type.INCREMENTAL); |
157 LuanState luan = (LuanState)cloner.clone(this.luan); | |
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158 return fn.call(luan); |
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159 } |
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160 } |
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161 |
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162 } |