annotate src/goodjava/rpc/RpcCon.java @ 1752:b4fa42c1e999

minor
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 25 Jan 2023 12:22:09 -0700
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children
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1 package goodjava.rpc;
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2
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3 import java.io.InputStream;
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4 import java.io.BufferedOutputStream;
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5 import java.io.IOException;
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6 import java.net.Socket;
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7 import java.util.List;
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8 import goodjava.parser.ParseException;
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9 import goodjava.json.JsonParser;
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10 import goodjava.json.JsonToString;
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11 import goodjava.io.BufferedInputStream;
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12 import goodjava.io.DataInputStream;
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13 import goodjava.io.DataOutputStream;
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14 import goodjava.io.IoUtils;
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15 import goodjava.io.CountingInputStream;
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17
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18 public class RpcCon {
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19 public final Socket socket;
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20 private final DataInputStream in;
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21 private final DataOutputStream out;
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22 InputStream inBinary = null;
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23 long lenBinary = -1;
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24
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25 RpcCon(Socket socket)
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26 throws RpcError
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27 {
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28 try {
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29 this.socket = socket;
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30 this.in = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
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31 this.out = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream()));
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32 } catch(IOException e) {
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33 close();
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34 throw new RpcError(e);
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35 }
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36 }
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37
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38 public void close()
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39 throws RpcError
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40 {
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41 try {
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42 socket.close();
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43 } catch(IOException e) {
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44 throw new RpcError(e);
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45 }
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46 }
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47
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48 public boolean isClosed() {
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49 return socket.isClosed();
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50 }
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51
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52 void write(InputStream in,long lenIn,List list)
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53 throws RpcError
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54 {
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55 if( in != null )
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56 list.add(0,lenIn);
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57 String json = new JsonToString().toString(list);
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58 try {
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59 out.writeString(json);
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60 if( in != null ) {
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61 CountingInputStream countIn = new CountingInputStream(in);
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62 IoUtils.copyAll(countIn,out);
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63 if( countIn.count() != lenIn ) {
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64 close();
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65 throw new RpcError("InputStream wrong length "+countIn.count()+" when should be "+lenIn+" - list = "+list);
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66 }
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67 }
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68 out.flush();
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69 } catch(IOException e) {
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70 close();
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71 throw new RpcError(e);
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72 }
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73 }
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74
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75 List readJson()
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76 throws RpcError
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77 {
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78 try {
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79 if( inBinary != null ) {
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80 inBinary.close();
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81 inBinary = null;
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82 lenBinary = -1;
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83 }
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84 String json = in.readString();
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85 List list = (List)JsonParser.parse(json);
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86 if( list.get(0) instanceof Long ) {
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87 lenBinary = (Long)list.remove(0);
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88 inBinary = new FixedLengthInputStream(in,lenBinary);
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89 }
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90 return list;
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91 } catch(IOException e) {
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92 close();
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93 throw new RpcError(e);
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94 } catch(ParseException e) {
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95 close();
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96 throw new RpcError(e);
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97 }
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98 }
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99
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100 }