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annotate src/luan/modules/http/HttpServicer.java @ 1265:3f4644246e39

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LuanHandler cleanup and add Server.serve_for_proxy
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 25 Sep 2018 19:51:34 -0600
parents 382c444a6c77
children 9fa8b8389578
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1 package luan.modules.http;
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2
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3 import org.slf4j.Logger;
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4 import org.slf4j.LoggerFactory;
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5 import luan.webserver.Request;
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6 import luan.webserver.Response;
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7 import luan.LuanState;
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8 import luan.LuanFunction;
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9 import luan.LuanException;
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10 import luan.LuanTable;
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11 import luan.LuanCloner;
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12 import luan.modules.PackageLuan;
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15 public final class HttpServicer {
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16 private static final Logger logger = LoggerFactory.getLogger(HttpServicer.class);
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18 public static Response service(LuanState luan,Request request,String modName)
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19 throws LuanException
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20 {
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21 try {
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22 return serviceLuan(luan,request,modName);
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23 } catch(LuanException e) {
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24 return handleError(luan,request,e);
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25 }
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26 }
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28 private static Response handleError(LuanState luan,Request request,LuanException e)
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29 throws LuanException
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30 {
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31 //e.printStackTrace();
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32 synchronized(luan) {
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33 LuanCloner cloner = new LuanCloner(LuanCloner.Type.INCREMENTAL);
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34 luan = (LuanState)cloner.clone(luan);
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35 }
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36 LuanTable module = (LuanTable)PackageLuan.require(luan,"luan:http/Http.luan");
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37 LuanFunction fn = (LuanFunction)module.rawGet("handle_error");
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38 return (Response)fn.call( luan, new Object[]{request,e.table()} );
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39 }
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41 private static Response serviceLuan(LuanState luan,Request request,String modName)
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42 throws LuanException
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43 {
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44 LuanFunction fn;
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45 synchronized(luan) {
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46 PackageLuan.enableLoad(luan,"luan:http/Http.luan",modName);
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47 PackageLuan.require(luan,"luan:http/Http.luan");
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48 Object mod = PackageLuan.load(luan,modName);
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49 if( mod.equals(Boolean.FALSE) )
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50 return null;
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51 if( !(mod instanceof LuanFunction) )
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52 throw new LuanException( "module '"+modName+"' must return a function" );
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53 LuanCloner cloner = new LuanCloner(LuanCloner.Type.INCREMENTAL);
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54 luan = (LuanState)cloner.clone(luan);
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55 fn = (LuanFunction)cloner.get(mod);
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56 }
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58 LuanTable module = (LuanTable)PackageLuan.require(luan,"luan:http/Http.luan");
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60 // request
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61 LuanFunction newRequestFn = (LuanFunction)module.rawGet("new_request");
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62 newRequestFn.call( luan, new Object[]{request} );
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64 // response
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65 LuanFunction newResponseFn = (LuanFunction)module.rawGet("new_response");
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66 newResponseFn.call(luan);
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68 fn.call(luan);
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70 LuanFunction finishFn = (LuanFunction)module.rawGet("finish");
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71 Response response = (Response)finishFn.call(luan);
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72 return response;
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73 }
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75 private HttpServicer() {} // never
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76 }