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annotate src/luan/modules/http/LuanHandler.java @ 1263:382c444a6c77

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add Http.eval_in_root and Http.handle_error
author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 24 Sep 2018 22:06:25 -0600
parents e38f5869e9df
children d41997776788
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 org.slf4j.Logger;
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10 import org.slf4j.LoggerFactory;
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11 import luan.webserver.Request;
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12 import luan.webserver.Response;
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13 import luan.webserver.Server;
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14 import luan.webserver.Handler;
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15 import luan.webserver.ResponseOutputStream;
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16 import luan.Luan;
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17 import luan.LuanState;
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18 import luan.LuanTable;
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19 import luan.LuanFunction;
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20 import luan.LuanJavaFunction;
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21 import luan.LuanCloner;
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22 import luan.LuanException;
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23 import luan.modules.PackageLuan;
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24 import luan.modules.BasicLuan;
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26
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27 public final class LuanHandler implements Handler, Closeable {
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28 private final LuanState luanInit;
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29 private final Logger logger;
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30 private volatile LuanState luan;
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31
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32 private static final Method resetLuanMethod;
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33 private static final Method evalInRootMethod;
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34 static {
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35 try {
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36 resetLuanMethod = LuanHandler.class.getMethod( "reset_luan" );
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37 evalInRootMethod = LuanHandler.class.getMethod( "eval_in_root", String.class );
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38 } catch(NoSuchMethodException e) {
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39 throw new RuntimeException(e);
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40 }
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41 }
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42
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43 public LuanHandler(LuanState luanInit,String loggerRoot) {
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44 this.luanInit = luanInit;
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45 if( loggerRoot==null )
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46 loggerRoot = "";
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47 logger = LoggerFactory.getLogger(loggerRoot+LuanHandler.class.getName());
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48 try {
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49 LuanTable Http = (LuanTable)PackageLuan.require(luanInit,"luan:http/Http.luan");
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50 Http.rawPut( "reset_luan", new LuanJavaFunction(resetLuanMethod,this) );
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51 Http.rawPut( "eval_in_root", new LuanJavaFunction(evalInRootMethod,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 setLuan();
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56 luanInit.onClose(this);
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57 }
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58
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59 public LuanState getLuan() {
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60 return luan;
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61 }
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62
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63 private void setLuan() {
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64 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE);
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65 luan = (LuanState)cloner.clone(luanInit);
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66 try {
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67 PackageLuan.load(luan,"site:/init.luan");
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68 } catch(LuanException e) {
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69 String err = e.getLuanStackTraceString();
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70 logger.error(err);
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71 }
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72 }
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73
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74 @Override public Response handle(Request request) {
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75 if( request.path.endsWith("/") )
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76 return null;
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77 String modName = "site:" + request.path +".luan";
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78 return handle(request,modName);
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79 }
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80
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81 Response handle(Request request,String modName) {
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82 Thread thread = Thread.currentThread();
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83 String oldName = thread.getName();
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84 thread.setName(request.headers.get("host")+request.path);
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85 try {
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86 return HttpServicer.service(luan,request,modName);
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87 } finally {
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88 thread.setName(oldName);
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89 }
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90 }
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91
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92 public void close() {
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93 synchronized(luan) {
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94 luan.close();
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95 }
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96 }
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97
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98 public Object call_rpc(String fnName,Object... args) throws LuanException {
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99 LuanFunction fn;
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100 LuanState luan = this.luan;
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101 synchronized(luan) {
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102 PackageLuan.enableLoad(luan,"luan:Rpc.luan");
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103 LuanTable rpc = (LuanTable)PackageLuan.require(luan,"luan:Rpc.luan");
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104 LuanTable fns = (LuanTable)rpc.get(luan,"functions");
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105 fn = (LuanFunction)fns.get(luan,fnName);
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106 if( fn == null )
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107 throw new LuanException( "function not found: " + fnName );
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108 LuanCloner cloner = new LuanCloner(LuanCloner.Type.INCREMENTAL);
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109 luan = (LuanState)cloner.clone(luan);
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110 fn = (LuanFunction)cloner.get(fn);
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111 }
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112 return fn.call(luan,args);
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113 }
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114
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115 public void reset_luan() {
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116 setLuan();
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117 }
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118
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119 public Object runLuan(String sourceText,String sourceName) throws LuanException {
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120 LuanFunction fn = Luan.load(sourceText,sourceName);
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121 synchronized(luan) {
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122 LuanCloner cloner = new LuanCloner(LuanCloner.Type.INCREMENTAL);
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123 LuanState luan = (LuanState)cloner.clone(this.luan);
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124 return fn.call(luan);
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125 }
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126 }
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127
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128 public void eval_in_root(String text) throws LuanException {
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129 LuanState luan;
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130 synchronized(this.luan) {
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131 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE);
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132 luan = (LuanState)cloner.clone(this.luan);
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133 }
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134 BasicLuan.load(text,"<eval_in_root>",null).call(luan);
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135 this.luan = luan;
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136 }
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137
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parents: 1000
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138 public static void start(Server server) throws Exception {
3fa54d9d19cd better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
parents: 1000
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139 try {
3fa54d9d19cd better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
parents: 1000
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140 server.start();
3fa54d9d19cd better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
parents: 1000
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141 } catch(BindException e) {
3fa54d9d19cd better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
parents: 1000
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142 throw new LuanException(e.toString());
3fa54d9d19cd better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
parents: 1000
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143 }
3fa54d9d19cd better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
parents: 1000
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144 }
1077
ca968ef1747a better handling of BindException
Franklin Schmidt <fschmidt@gmail.com>
parents: 800
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145
175
bdbd4740121f finish web server
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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146 }