Mercurial Hosting > luan
annotate src/luan/modules/url/LuanUrl.java @ 780:6a87d51ae0ed
allow parameters for HTTP DELETE
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Mon, 29 Aug 2016 21:47:19 -0600 |
| parents | 1a68fc55a80c |
| children | a04da9a3e9eb |
| rev | line source |
|---|---|
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1 package luan.modules.url; |
| 722 | 2 |
| 3 import java.io.InputStream; | |
| 4 import java.io.InputStreamReader; | |
| 5 import java.io.OutputStream; | |
| 6 import java.io.Reader; | |
| 7 import java.io.IOException; | |
| 8 import java.io.UnsupportedEncodingException; | |
| 9 import java.net.URL; | |
| 10 import java.net.URLConnection; | |
| 11 import java.net.HttpURLConnection; | |
| 12 import java.net.URLEncoder; | |
| 13 import java.util.Map; | |
| 14 import java.util.HashMap; | |
| 15 import java.util.List; | |
| 16 import java.util.Base64; | |
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17 import luan.Luan; |
| 722 | 18 import luan.LuanState; |
| 19 import luan.LuanTable; | |
| 20 import luan.LuanJavaFunction; | |
| 21 import luan.LuanException; | |
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22 import luan.modules.IoLuan; |
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23 import luan.modules.Utils; |
| 722 | 24 |
| 25 | |
| 26 public final class LuanUrl extends IoLuan.LuanIn { | |
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27 |
| 722 | 28 private static enum Method { GET, POST, DELETE } |
| 29 | |
| 30 private URL url; | |
| 31 private Method method = Method.GET; | |
| 32 private Map headers; | |
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33 private String content = null; |
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34 private MultipartClient multipart = null; |
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35 private int timeout = 0; |
| 722 | 36 |
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37 public LuanUrl(LuanState luan,URL url,LuanTable options) throws LuanException { |
| 722 | 38 this.url = url; |
| 39 if( options != null ) { | |
| 40 Map map = options.asMap(luan); | |
| 41 String methodStr = getString(map,"method"); | |
| 42 if( methodStr != null ) { | |
| 43 methodStr = methodStr.toUpperCase(); | |
| 44 try { | |
| 45 this.method = Method.valueOf(methodStr); | |
| 46 } catch(IllegalArgumentException e) { | |
| 47 throw new LuanException( "invalid method: "+methodStr ); | |
| 48 } | |
| 49 } | |
| 723 | 50 Map headerMap = getMap(luan,map,"headers"); |
| 51 if( headerMap != null ) { | |
| 52 headers = new HashMap(); | |
| 53 for( Object hack : headerMap.entrySet() ) { | |
| 54 Map.Entry entry = (Map.Entry)hack; | |
| 55 String key = (String)entry.getKey(); | |
| 56 Object val = entry.getValue(); | |
| 57 String name = toHttpHeaderName(key); | |
| 58 if( val instanceof String ) { | |
| 59 headers.put(name,val); | |
| 60 } else { | |
| 61 if( !(val instanceof LuanTable) ) | |
| 62 throw new LuanException( "header '"+key+"' must be string or table" ); | |
| 63 LuanTable t = (LuanTable)val; | |
| 64 if( !t.isList() ) | |
| 65 throw new LuanException( "header '"+key+"' table must be list" ); | |
| 66 headers.put(name,t.asList()); | |
| 67 } | |
| 68 } | |
| 69 } | |
| 722 | 70 Map auth = getMap(luan,map,"authorization"); |
| 71 if( auth != null ) { | |
| 723 | 72 if( headers!=null && headers.containsKey("Authorization") ) |
| 73 throw new LuanException( "can't define authorization with header 'Authorization' defined" ); | |
| 722 | 74 String user = getString(auth,"user"); |
| 75 String password = getString(auth,"password"); | |
| 76 if( !auth.isEmpty() ) | |
| 77 throw new LuanException( "unrecognized authorization options: "+auth ); | |
| 78 StringBuilder sb = new StringBuilder(); | |
| 79 if( user != null ) | |
| 80 sb.append(user); | |
| 81 sb.append(':'); | |
| 82 if( password != null ) | |
| 83 sb.append(password); | |
| 84 String val = "Basic " + Base64.getEncoder().encodeToString(sb.toString().getBytes()); | |
| 85 if( headers == null ) | |
| 86 headers = new HashMap(); | |
| 87 headers.put("Authorization",val); | |
| 88 } | |
| 89 Map params = getMap(luan,map,"parameters"); | |
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90 String enctype = getString(map,"enctype"); |
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91 if( enctype != null ) { |
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92 if( !enctype.equals("multipart/form-data") ) |
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93 throw new LuanException( "unrecognized enctype: "+enctype ); |
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94 if( this.method!=Method.POST ) |
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95 throw new LuanException( "multipart/form-data can only be used with POST" ); |
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96 if( params==null ) |
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97 throw new LuanException( "multipart/form-data requires parameters" ); |
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98 if( params.isEmpty() ) |
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99 throw new LuanException( "multipart/form-data parameters can't be empty" ); |
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100 multipart = new MultipartClient(params); |
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101 } |
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102 else if( params != null ) { |
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103 StringBuilder sb = new StringBuilder(); |
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104 for( Object hack : params.entrySet() ) { |
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105 Map.Entry entry = (Map.Entry)hack; |
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106 String key = (String)entry.getKey(); |
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107 Object val = entry.getValue(); |
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108 String keyEnc = encode(key); |
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109 if( val instanceof String ) { |
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110 and(sb); |
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111 sb.append( keyEnc ).append( '=' ).append( encode((String)val) ); |
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112 } else { |
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113 if( !(val instanceof LuanTable) ) |
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114 throw new LuanException( "parameter '"+key+"' must be string or table" ); |
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115 LuanTable t = (LuanTable)val; |
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116 if( !t.isList() ) |
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117 throw new LuanException( "parameter '"+key+"' table must be list" ); |
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118 for( Object obj : t.asList() ) { |
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119 if( !(obj instanceof String) ) |
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120 throw new LuanException( "parameter '"+key+"' values must be strings" ); |
| 722 | 121 and(sb); |
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122 sb.append( keyEnc ).append( '=' ).append( encode((String)obj) ); |
| 722 | 123 } |
| 124 } | |
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125 } |
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126 if( this.method==Method.POST ) { |
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127 content = sb.toString(); |
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128 } else { |
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129 String urlS = this.url.toString(); |
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130 if( urlS.indexOf('?') == -1 ) { |
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131 urlS += '?'; |
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132 } else { |
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133 urlS += '&'; |
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134 } |
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135 urlS += sb; |
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136 try { |
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137 this.url = new URL(urlS); |
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138 } catch(IOException e) { |
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139 throw new RuntimeException(e); |
| 722 | 140 } |
| 141 } | |
| 142 } | |
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143 Integer timeout = getInt(map,"time_out"); |
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144 if( timeout != null ) |
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145 this.timeout = timeout; |
| 722 | 146 if( !map.isEmpty() ) |
| 147 throw new LuanException( "unrecognized options: "+map ); | |
| 148 } | |
| 149 } | |
| 150 | |
| 723 | 151 public static String toHttpHeaderName(String luanName) { |
| 152 luanName = luanName.toLowerCase(); | |
| 153 StringBuilder buf = new StringBuilder(); | |
| 154 boolean capitalize = true; | |
| 155 char[] a = luanName.toCharArray(); | |
| 156 for( int i=0; i<a.length; i++ ) { | |
| 157 char c = a[i]; | |
| 158 if( c == '_' || c == '-' ) { | |
| 159 a[i] = '-'; | |
| 160 capitalize = true; | |
| 161 } else if( capitalize ) { | |
| 162 a[i] = Character.toUpperCase(c); | |
| 163 capitalize = false; | |
| 164 } | |
| 165 } | |
| 166 return String.valueOf(a); | |
| 167 } | |
| 168 | |
| 722 | 169 private static void and(StringBuilder sb) { |
| 170 if( sb.length() > 0 ) | |
| 171 sb.append('&'); | |
| 172 } | |
| 173 | |
| 174 private static String encode(String s) { | |
| 175 try { | |
| 176 return URLEncoder.encode(s,"UTF-8"); | |
| 177 } catch(UnsupportedEncodingException e) { | |
| 178 throw new RuntimeException(e); | |
| 179 } | |
| 180 } | |
| 181 | |
| 182 private static String getString(Map map,String key) throws LuanException { | |
| 183 Object val = map.remove(key); | |
| 184 if( val!=null && !(val instanceof String) ) | |
| 185 throw new LuanException( "parameter '"+key+"' must be a string" ); | |
| 186 return (String)val; | |
| 187 } | |
| 188 | |
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189 private static Integer getInt(Map map,String key) throws LuanException { |
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190 Object val = map.remove(key); |
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191 if( val==null ) |
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192 return null; |
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193 Integer i = Luan.asInteger(val); |
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194 if( i==null ) |
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195 throw new LuanException( "parameter '"+key+"' must be an integer" ); |
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196 return i; |
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197 } |
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198 |
| 722 | 199 private static LuanTable getTable(Map map,String key) throws LuanException { |
| 200 Object val = map.remove(key); | |
| 201 if( val!=null && !(val instanceof LuanTable) ) | |
| 202 throw new LuanException( "parameter '"+key+"' must be a table" ); | |
| 203 return (LuanTable)val; | |
| 204 } | |
| 205 | |
| 206 private static Map getMap(LuanState luan,Map map,String key) throws LuanException { | |
| 207 LuanTable t = getTable(map,key); | |
| 208 return t==null ? null : t.asMap(luan); | |
| 209 } | |
| 210 | |
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211 @Override public InputStream inputStream() throws IOException, LuanException { |
| 722 | 212 URLConnection con = url.openConnection(); |
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213 if( timeout != 0 ) { |
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214 con.setConnectTimeout(timeout); |
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215 con.setReadTimeout(timeout); |
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216 } |
| 722 | 217 if( headers != null ) { |
| 218 for( Object hack : headers.entrySet() ) { | |
| 219 Map.Entry entry = (Map.Entry)hack; | |
| 220 String key = (String)entry.getKey(); | |
| 221 Object val = entry.getValue(); | |
| 222 if( val instanceof String ) { | |
| 223 con.addRequestProperty(key,(String)val); | |
| 224 } else { | |
| 225 List list = (List)val; | |
| 226 for( Object obj : list ) { | |
| 227 con.addRequestProperty(key,(String)obj); | |
| 228 } | |
| 229 } | |
| 230 } | |
| 231 } | |
| 232 if( method==Method.GET ) { | |
| 233 return con.getInputStream(); | |
| 234 } | |
| 235 | |
| 236 HttpURLConnection httpCon = (HttpURLConnection)con; | |
| 237 | |
| 238 if( method==Method.DELETE ) { | |
| 239 httpCon.setRequestMethod("DELETE"); | |
| 240 return httpCon.getInputStream(); | |
| 241 } | |
| 242 | |
| 243 // POST | |
| 244 | |
| 245 // httpCon.setRequestProperty("Content-Type","application/x-www-form-urlencoded"); | |
| 246 httpCon.setDoOutput(true); | |
| 247 httpCon.setRequestMethod("POST"); | |
| 248 | |
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249 OutputStream out; |
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250 if( multipart != null ) { |
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251 out = multipart.write(httpCon); |
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252 } else { |
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253 byte[] post = content.getBytes(); |
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254 // httpCon.setRequestProperty("Content-Length",Integer.toString(post.length)); |
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255 out = httpCon.getOutputStream(); |
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256 out.write(post); |
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257 } |
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Franklin Schmidt <fschmidt@gmail.com>
parents:
725
diff
changeset
|
258 out.flush(); |
| 722 | 259 try { |
| 260 try { | |
| 261 return httpCon.getInputStream(); | |
| 262 } catch(IOException e) { | |
| 263 InputStream is = httpCon.getErrorStream(); | |
| 264 if( is == null ) | |
| 265 throw e; | |
| 266 Reader in = new InputStreamReader(is); | |
| 267 String msg = Utils.readAll(in); | |
| 268 in.close(); | |
| 269 throw new LuanException(msg,e); | |
| 270 } | |
| 271 } finally { | |
| 272 out.close(); | |
| 273 } | |
| 274 } | |
| 275 | |
| 276 @Override public String to_string() { | |
| 277 return url.toString(); | |
| 278 } | |
| 279 | |
| 280 @Override public String to_uri_string() { | |
| 281 return url.toString(); | |
| 282 } | |
| 283 /* | |
| 284 public String post(String postS) throws IOException { | |
| 285 return new UrlCall(url).post(postS); | |
| 286 } | |
| 287 | |
| 288 @Override public LuanTable table() { | |
| 289 LuanTable tbl = super.table(); | |
| 290 try { | |
| 291 tbl.rawPut( "post", new LuanJavaFunction( | |
| 292 LuanUrl.class.getMethod( "post", String.class ), this | |
| 293 ) ); | |
| 294 } catch(NoSuchMethodException e) { | |
| 295 throw new RuntimeException(e); | |
| 296 } | |
| 297 return tbl; | |
| 298 } | |
| 299 */ | |
| 300 } |