Mercurial Hosting > luan
annotate src/luan/modules/http/LuanHandler.java @ 1231:0b75337bb91a
better closing
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Thu, 05 Apr 2018 16:38:33 -0600 |
parents | c7adcdf79bf2 |
children | c147e2e877e3 |
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1171 | 1 package luan.modules.http; |
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2 |
1231 | 3 import java.io.Closeable; |
1160 | 4 import java.io.Writer; |
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; |
1160 | 13 import luan.webserver.Request; |
14 import luan.webserver.Response; | |
15 import luan.webserver.Server; | |
16 import luan.webserver.Handler; | |
17 import luan.webserver.Status; | |
18 import luan.webserver.ResponseOutputStream; | |
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19 import luan.Luan; |
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20 import luan.LuanState; |
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21 import luan.LuanTable; |
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22 import luan.LuanFunction; |
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23 import luan.LuanJavaFunction; |
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24 import luan.LuanCloner; |
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25 import luan.LuanException; |
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26 import luan.modules.PackageLuan; |
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27 |
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28 |
1231 | 29 public class LuanHandler implements Handler, Closeable { |
1186 | 30 private final LuanState luanInit; |
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31 private final Logger logger; |
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32 private final ReadWriteLock lock = new ReentrantReadWriteLock(); |
1186 | 33 private LuanState luan; |
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34 |
1186 | 35 private static final Method resetLuanMethod; |
36 static { | |
37 try { | |
38 resetLuanMethod = LuanHandler.class.getMethod("reset_luan"); | |
39 } catch(NoSuchMethodException e) { | |
40 throw new RuntimeException(e); | |
41 } | |
42 } | |
43 | |
1231 | 44 public LuanHandler(LuanState luanInit,String loggerRoot) { |
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()); |
1186 | 49 try { |
50 LuanTable Http = (LuanTable)PackageLuan.require(luanInit,"luan:http/Http.luan"); | |
51 Http.rawPut( "reset_luan", new LuanJavaFunction(resetLuanMethod,this) ); | |
52 } catch(LuanException e) { | |
53 throw new RuntimeException(e); | |
54 } | |
55 setLuan(); | |
1231 | 56 luanInit.onClose(this); |
1186 | 57 } |
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58 |
1186 | 59 private void setLuan() { |
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60 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE); |
1186 | 61 luan = (LuanState)cloner.clone(luanInit); |
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62 try { |
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63 PackageLuan.load(luan,"site:/init.luan"); |
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64 } catch(LuanException e) { |
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65 String err = e.getLuanStackTraceString(); |
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66 logger.error(err); |
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67 } |
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68 } |
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69 |
1160 | 70 @Override public Response handle(Request request) { |
1167 | 71 if( request.path.endsWith("/") ) |
72 return null; | |
73 String modName = "site:" + request.path +".luan"; | |
74 return handle(request,modName); | |
75 } | |
76 | |
77 Response handle(Request request,String modName) { | |
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78 Thread thread = Thread.currentThread(); |
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79 String oldName = thread.getName(); |
1160 | 80 thread.setName(request.headers.get("host")+request.path); |
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81 lock.readLock().lock(); |
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82 try { |
1167 | 83 Response response = HttpServicer.service(luan,request,modName); |
1160 | 84 return response; |
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85 } catch(LuanException e) { |
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86 //e.printStackTrace(); |
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87 String err = e.getLuanStackTraceString(); |
1215 | 88 logger.error(err+"\n"+request.rawHead.trim()+"\n"); |
1161 | 89 String msg = "Internel Server Error\n\n" + err; |
90 return Response.errorResponse( Status.INTERNAL_SERVER_ERROR, msg ); | |
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91 } finally { |
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92 lock.readLock().unlock(); |
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93 thread.setName(oldName); |
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94 } |
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95 } |
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96 |
1231 | 97 public void close() { |
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98 synchronized(luan) { |
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99 luan.close(); |
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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 { |
798 | 104 lock.readLock().lock(); |
105 try { | |
106 LuanFunction fn; | |
107 LuanState luan = this.luan; | |
108 synchronized(luan) { | |
109 PackageLuan.enableLoad(luan,"luan:Rpc.luan"); | |
110 LuanTable rpc = (LuanTable)PackageLuan.require(luan,"luan:Rpc.luan"); | |
111 LuanTable fns = (LuanTable)rpc.get(luan,"functions"); | |
112 fn = (LuanFunction)fns.get(luan,fnName); | |
113 if( fn == null ) | |
114 throw new LuanException( "function not found: " + fnName ); | |
115 LuanCloner cloner = new LuanCloner(LuanCloner.Type.INCREMENTAL); | |
116 luan = (LuanState)cloner.clone(luan); | |
117 fn = (LuanFunction)cloner.get(fn); | |
118 } | |
119 return fn.call(luan,args); | |
120 } finally { | |
121 lock.readLock().unlock(); | |
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122 } |
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123 } |
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124 |
1186 | 125 public void reset_luan() { |
126 new Thread() { | |
127 public void run() { | |
128 lock.writeLock().lock(); | |
129 try { | |
130 synchronized(luan) { | |
131 luan.close(); | |
132 setLuan(); | |
133 } | |
134 } finally { | |
135 lock.writeLock().unlock(); | |
136 } | |
137 } | |
138 }.start(); | |
139 } | |
140 | |
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141 public Object runLuan(String sourceText,String sourceName) throws LuanException { |
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142 LuanFunction fn = Luan.load(sourceText,sourceName); |
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143 synchronized(luan) { |
798 | 144 LuanCloner cloner = new LuanCloner(LuanCloner.Type.INCREMENTAL); |
145 LuanState luan = (LuanState)cloner.clone(this.luan); | |
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146 return fn.call(luan); |
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147 } |
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148 } |
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149 |
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150 public static void start(Server server) throws Exception { |
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151 try { |
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152 server.start(); |
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153 } catch(BindException e) { |
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154 throw new LuanException(e.toString()); |
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155 } |
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156 } |
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157 |
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158 } |