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annotate src/luan/modules/http/Http.luan @ 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 198d6af7330a
children 781ec0a92bb5
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1 java()
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2 local Luan = require "luan:Luan.luan"
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3 local error = Luan.error
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4 local ipairs = Luan.ipairs or error()
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5 local pairs = Luan.pairs or error()
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6 local type = Luan.type or error()
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7 local Io = require "luan:Io.luan"
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8 local Html = require "luan:Html.luan"
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9 local Table = require "luan:Table.luan"
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10 local clear = Table.clear or error()
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11 local java_to_table_deep = Table.java_to_table_deep or error()
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12 local Package = require "luan:Package.luan"
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13 local String = require "luan:String.luan"
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14 local lower = String.lower or error()
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15 local matches = String.matches or error()
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16 local trim = String.trim or error()
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17 local IoLuan = require "java:luan.modules.IoLuan"
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18 local LuanJava = require "java:luan.Luan"
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19 local Request = require "java:luan.webserver.Request"
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20 local Response = require "java:luan.webserver.Response"
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21 local ResponseOutputStream = require "java:luan.webserver.ResponseOutputStream"
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22 local Status = require "java:luan.webserver.Status"
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23 local OutputStreamWriter = require "java:java.io.OutputStreamWriter"
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24 local HashMap = require "java:java.util.HashMap"
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25 local Logging = require "luan:logging/Logging.luan"
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26 local logger = Logging.logger "Http"
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29 local Http = {}
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30
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31 local old_java_to_table_shallow = Table.java_to_table_shallow or error()
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32
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33 local function java_to_table_shallow(obj)
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34 if type(obj)=="java" and obj.instanceof(Request.MultipartFile) then
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35 return {
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36 filename = obj.filename
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37 content_type = obj.contentType
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38 content = obj.content
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39 }
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40 end
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41 return old_java_to_table_shallow(obj)
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42 end
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43
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44 function Http.new_request(java)
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45 local this = {}
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46 Http.request = this
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47 if java == nil then
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48 this.method = "GET"
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49 this.scheme = "http"
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50 this.headers = {}
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51 this.parameters = {}
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52 this.cookies = {}
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53 else
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54 this.java = java
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55 this.raw_head = java.rawHead or error()
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56 this.method = java.method or error()
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57 this.raw_path = java.rawPath or error()
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58 this.path = java.path or error()
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59 this.protocol = java.protocol or error()
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60 this.scheme = java.scheme or error()
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61 this.headers = java_to_table_deep(java.headers)
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62 this.parameters = java_to_table_deep(java.parameters,java_to_table_shallow)
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63 this.cookies = java_to_table_deep(java.cookies)
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64 end
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65
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66 function this.url()
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67 return this.scheme.."://"..this.headers["host"]..this.raw_path
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68 end
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69
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70 return this
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71 end
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72
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73 local STATUS = {
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74 OK = 200
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75 MOVED_PERMANENTLY = 301
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76 FOUND = 302
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77 -- add more as needed
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78 }
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79 Http.STATUS = STATUS
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80
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81 function Http.new_response()
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82 local this = {}
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83 Http.response = this
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84
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85 function this.reset()
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86 this.java = Response.new()
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87 this.headers = {}
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88 this.status = STATUS.OK
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89 this.writer = nil
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90 end
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91
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92 this.reset()
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93
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94 function this.send_redirect(location)
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95 this.status = STATUS.FOUND
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96 this.headers["location"] = location
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97 end
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98
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99 function this.send_error(status,msg)
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100 this.reset()
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101 this.status = status
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102 if msg ~= nil then
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103 this.headers["content-type"] = "text/plain; charset=utf-8"
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104 local writer = this.text_writer()
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105 writer.write(msg)
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106 end
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107 end
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108
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109 function this.set_cookie(name,value,attributes)
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110 attributes = attributes or {}
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111 attributes["Path"] = attributes["Path"] or "/"
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112 local attrMap = HashMap.new()
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113 for attr_name, attr_value in pairs(attributes) do
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114 type(attr_name)=="string" or "cookie attribute name must be string"
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115 type(attr_value)=="string" or "cookie attribute value must be string"
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116 attrMap.put(attr_name,attr_value)
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117 end
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118 this.java.setCookie(name,value,attrMap)
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119 end
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120
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121 function this.set_persistent_cookie(name,value,attributes)
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122 attributes = attributes or {}
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123 attributes["Max-Age"] = "10000000"
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124 this.set_cookie(name,value,attributes)
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125 end
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126
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127 function this.remove_cookie(name,attributes)
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128 attributes = attributes or {}
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129 attributes["Max-Age"] = "0"
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130 this.set_cookie(name,"delete",attributes)
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131 end
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132
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133 function this.text_writer()
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134 this.writer and "writer already set"
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135 this.writer = ResponseOutputStream.new(this.java)
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136 this.writer = OutputStreamWriter.new(this.writer)
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137 return IoLuan.textWriter(this.writer)
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138 end
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139
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140 function this.binary_writer()
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141 this.writer and "writer already set"
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142 this.writer = ResponseOutputStream.new(this.java)
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143 return IoLuan.binaryWriter(this.writer)
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144 end
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145
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146 return this
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147 end
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148
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149 function Http.finish() -- called only from java
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150 local response = Http.response or error()
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151 local java = response.java or error()
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152 java.status = Status.getStatus(response.status)
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153 for name, value in pairs(response.headers) do
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154 type(name)=="string" or "header name must be string"
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155 name = lower(name)
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156 value = LuanJava.toJava(value)
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157 java.headers.put(name,value)
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158 end
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159 response.writer and response.writer.close()
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160 return java
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161 end
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162
1263
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163 function Http.error_priority(java_request,e)
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164 return "error"
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165 end
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166
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167 function Http.handle_error(java_request,e)
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168 local call = Http.error_priority(java_request,e)
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169 local err = e.get_stack_trace_string()
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170 logger[call](err.."\n"..trim(java_request.rawHead).."\n")
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171 local msg = "Internel Server Error\n\n"..err
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172 return Response.errorResponse( Status.INTERNAL_SERVER_ERROR, msg )
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173 end
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174
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175 return Http