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annotate src/luan/modules/http/LuanHandler.java @ 786:fe63c508a177

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add Http.reset_luan()
author Franklin Schmidt <fschmidt@gmail.com>
date Fri, 02 Sep 2016 17:43:29 -0600
parents d69d3c51c44e
children ca81307adf7c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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2b9bc97f0439 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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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 lock.readLock().lock();
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60 try {
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61 if( !HttpServicer.service(luan,request,response,"site:"+target+".luan") )
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62 return;
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63 } catch(LuanException e) {
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64 //e.printStackTrace();
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65 String err = e.getFullMessage();
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66 logger.error(err);
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67 response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,err);
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68 } finally {
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69 lock.readLock().unlock();
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70 }
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71 baseRequest.setHandled(true);
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72 }
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73
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74 public void setWelcomeFile(String welcomeFile) {
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75 this.welcomeFile = welcomeFile;
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76 }
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77
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78 @Override protected void doStart() throws Exception {
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79 // Thread.dumpStack();
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80 //System.out.println("qqqqqqqqqqqqqqqqqqqq doStart "+this);
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81 setLuan();
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82 super.doStart();
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83 }
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84
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85 @Override protected void doStop() throws Exception {
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86 synchronized(luan) {
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87 luan.close();
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88 }
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89 //System.out.println("qqqqqqqqqqqqqqqqqqqq doStop "+this);
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90 super.doStop();
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91 }
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92 /*
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93 @Override public void destroy() {
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94 System.out.println("qqqqqqqqqqqqqqqqqqqq destroy "+this);
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95 super.destroy();
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96 }
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97 */
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99 public Object call_rpc(String fnName,Object... args) throws LuanException {
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100 LuanState luan = this.luan;
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101 synchronized(luan) {
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102 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE);
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103 luan = (LuanState)cloner.clone(luan);
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104 }
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105 LuanTable rpc = (LuanTable)PackageLuan.require(luan,"luan:Rpc.luan");
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106 LuanTable fns = (LuanTable)rpc.get(luan,"functions");
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107 LuanFunction fn = (LuanFunction)fns.get(luan,fnName);
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108 if( fn == null )
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109 throw new LuanException( "function not found: " + fnName );
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110 return fn.call(luan,args);
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111 }
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112
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113 public void reset_luan() {
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114 new Thread() {
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115 public void run() {
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116 lock.writeLock().lock();
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117 try {
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118 synchronized(luan) {
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119 luan.close();
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120 setLuan();
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121 }
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122 } catch(IOException e) {
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123 logger.error("reset_luan failed",e);
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124 } finally {
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125 lock.writeLock().unlock();
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126 }
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127 }
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128 }.start();
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129 }
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130
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131 private void setLuan() {
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132 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE);
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133 luan = (LuanState)cloner.clone(luanInit);
fe63c508a177 add Http.reset_luan()
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134 try {
fe63c508a177 add Http.reset_luan()
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135 PackageLuan.load(luan,"site:/init.luan");
fe63c508a177 add Http.reset_luan()
Franklin Schmidt <fschmidt@gmail.com>
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136 } catch(LuanException e) {
fe63c508a177 add Http.reset_luan()
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137 String err = e.getFullMessage();
fe63c508a177 add Http.reset_luan()
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138 logger.error(err);
fe63c508a177 add Http.reset_luan()
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139 }
fe63c508a177 add Http.reset_luan()
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140 }
fe63c508a177 add Http.reset_luan()
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141
fe63c508a177 add Http.reset_luan()
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142 public Object runLuan(String sourceText,String sourceName) throws LuanException {
fe63c508a177 add Http.reset_luan()
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143 LuanFunction fn = Luan.load(sourceText,sourceName);
fe63c508a177 add Http.reset_luan()
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144 synchronized(luan) {
fe63c508a177 add Http.reset_luan()
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145 return fn.call(luan);
fe63c508a177 add Http.reset_luan()
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146 }
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147 }
fe63c508a177 add Http.reset_luan()
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148
175
bdbd4740121f finish web server
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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149 }