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annotate src/luan/modules/http/LuanHandler.java @ 1257:e38f5869e9df

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don't reset in send_redirect and other improvements
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 20 Sep 2018 21:04:41 -0600
parents c147e2e877e3
children 382c444a6c77
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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diff changeset
1 package luan.modules.http;
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2
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3 import java.io.Closeable;
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4 import java.io.Writer;
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5 import java.io.PrintWriter;
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6 import java.io.IOException;
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7 import java.lang.reflect.Method;
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8 import java.net.BindException;
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9 import java.util.concurrent.locks.ReadWriteLock;
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10 import java.util.concurrent.locks.ReentrantReadWriteLock;
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11 import org.slf4j.Logger;
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12 import org.slf4j.LoggerFactory;
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13 import luan.webserver.Request;
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14 import luan.webserver.Response;
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15 import luan.webserver.Server;
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16 import luan.webserver.Handler;
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17 import luan.webserver.ResponseOutputStream;
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18 import luan.Luan;
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19 import luan.LuanState;
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20 import luan.LuanTable;
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21 import luan.LuanFunction;
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22 import luan.LuanJavaFunction;
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23 import luan.LuanCloner;
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24 import luan.LuanException;
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25 import luan.modules.PackageLuan;
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27
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28 public class LuanHandler implements Handler, Closeable {
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29 private final LuanState luanInit;
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30 private final Logger logger;
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31 private final HttpServicer httpServicer;
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32 private final ReadWriteLock lock = new ReentrantReadWriteLock();
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33 private LuanState luan;
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34
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35 private static final Method resetLuanMethod;
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36 static {
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37 try {
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38 resetLuanMethod = LuanHandler.class.getMethod("reset_luan");
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39 } catch(NoSuchMethodException e) {
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40 throw new RuntimeException(e);
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41 }
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42 }
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43
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44 public LuanHandler(LuanState luanInit,String loggerRoot,HttpServicer httpServicer) {
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45 this.luanInit = luanInit;
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46 if( loggerRoot==null )
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47 loggerRoot = "";
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48 logger = LoggerFactory.getLogger(loggerRoot+LuanHandler.class.getName());
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49 try {
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50 LuanTable Http = (LuanTable)PackageLuan.require(luanInit,"luan:http/Http.luan");
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51 Http.rawPut( "reset_luan", new LuanJavaFunction(resetLuanMethod,this) );
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52 } catch(LuanException e) {
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53 throw new RuntimeException(e);
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54 }
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55 this.httpServicer = httpServicer!=null ? httpServicer : new HttpServicer();
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56 setLuan();
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57 luanInit.onClose(this);
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58 }
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59
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60 public LuanState getLuan() {
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61 return luan;
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62 }
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63
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64 private void setLuan() {
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65 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE);
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66 luan = (LuanState)cloner.clone(luanInit);
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67 try {
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68 PackageLuan.load(luan,"site:/init.luan");
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69 } catch(LuanException e) {
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70 String err = e.getLuanStackTraceString();
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71 logger.error(err);
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72 }
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73 }
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74
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75 @Override public Response handle(Request request) {
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76 if( request.path.endsWith("/") )
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77 return null;
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78 String modName = "site:" + request.path +".luan";
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79 return handle(request,modName);
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80 }
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81
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82 Response handle(Request request,String modName) {
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83 Thread thread = Thread.currentThread();
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84 String oldName = thread.getName();
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85 thread.setName(request.headers.get("host")+request.path);
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86 lock.readLock().lock();
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87 try {
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88 return httpServicer.service(luan,request,modName);
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89 } finally {
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90 lock.readLock().unlock();
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91 thread.setName(oldName);
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92 }
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93 }
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94
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95 public void close() {
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96 synchronized(luan) {
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97 luan.close();
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98 }
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99 }
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100
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101 public Object call_rpc(String fnName,Object... args) throws LuanException {
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102 lock.readLock().lock();
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103 try {
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104 LuanFunction fn;
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105 LuanState luan = this.luan;
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106 synchronized(luan) {
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107 PackageLuan.enableLoad(luan,"luan:Rpc.luan");
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108 LuanTable rpc = (LuanTable)PackageLuan.require(luan,"luan:Rpc.luan");
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109 LuanTable fns = (LuanTable)rpc.get(luan,"functions");
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110 fn = (LuanFunction)fns.get(luan,fnName);
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111 if( fn == null )
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112 throw new LuanException( "function not found: " + fnName );
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113 LuanCloner cloner = new LuanCloner(LuanCloner.Type.INCREMENTAL);
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114 luan = (LuanState)cloner.clone(luan);
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115 fn = (LuanFunction)cloner.get(fn);
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116 }
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117 return fn.call(luan,args);
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118 } finally {
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119 lock.readLock().unlock();
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120 }
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121 }
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122
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123 public void reset_luan() {
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124 new Thread() {
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125 public void run() {
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126 lock.writeLock().lock();
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127 try {
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128 synchronized(luan) {
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129 luan.close();
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130 setLuan();
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131 }
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132 } finally {
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133 lock.writeLock().unlock();
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134 }
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135 }
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136 }.start();
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137 }
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138
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139 public Object runLuan(String sourceText,String sourceName) throws LuanException {
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140 LuanFunction fn = Luan.load(sourceText,sourceName);
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141 synchronized(luan) {
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142 LuanCloner cloner = new LuanCloner(LuanCloner.Type.INCREMENTAL);
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143 LuanState luan = (LuanState)cloner.clone(this.luan);
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144 return fn.call(luan);
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145 }
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parents: 785
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146 }
fe63c508a177 add Http.reset_luan()
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147
1004
3fa54d9d19cd better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
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148 public static void start(Server server) throws Exception {
3fa54d9d19cd better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
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149 try {
3fa54d9d19cd better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
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150 server.start();
3fa54d9d19cd better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
parents: 1000
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151 } catch(BindException e) {
3fa54d9d19cd better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
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152 throw new LuanException(e.toString());
3fa54d9d19cd better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
parents: 1000
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153 }
3fa54d9d19cd better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
parents: 1000
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154 }
1077
ca968ef1747a better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
parents: 800
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155
175
bdbd4740121f finish web server
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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156 }