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| 93 | <h1>HTTP API to AsterixDB</h1> |
| 94 | <div class="section"> |
| 95 | <h2><a name="Table_of_Contents"></a><a name="toc" id="toc">Table of Contents</a></h2> |
| 96 | <ul> |
| 97 | |
| 98 | <li><a href="#queryservice">Query Service API</a></li> |
| 99 | <li><a href="#querystatus">Query Status API</a></li> |
| 100 | <li><a href="#queryresult">Query Result API</a></li> |
| 101 | </ul></div> |
| 102 | <div class="section"> |
| 103 | <h2><a name="POST_.2Fquery.2Fservice_.5BBack_to_TOC.5D"></a><a name="queryservice" id="queryservice">POST /query/service</a><font size="4"> <a href="#toc">[Back to TOC]</a></font></h2> |
| 104 | <p><b>Description</b> Returns result for query as JSON. The response is a JSON object that contains some result metadata along with either an embedded result or an opaque handle that can be used to navigate to the result (see the decription of the <tt>mode</tt> parameter for more details).</p> |
| 105 | <p><b>Parameters</b></p> |
| 106 | <ul> |
| 107 | |
| 108 | <li><tt>statement</tt> - Specifies at least one valid SQL++ statement to run. The statements need to be urlencoded. Required.</li> |
| 109 | <li><tt>pretty</tt> - If the parameter <tt>pretty</tt> is given with the value <tt>true</tt>, the result will be indented. (Optional)</li> |
| 110 | <li><tt>client_context_id</tt> - A user-defined sequence of characters that the API receives and returns unchanged. This can be used e.g. to match individual requests, jobs, and responses. Another option could be to use it for groups of requests if an application decides to put e.g. an group identifier into that field to route groups of responses to a particular response processor.</li> |
| 111 | <li><tt>mode</tt> - Result delivery mode. Possible values are <tt>immediate</tt>, <tt>deferred</tt>, <tt>async</tt> (default: <tt>immediate</tt>). If the delivery mode is <tt>immediate</tt> the query result is returned with the response. If the delivery mode is <tt>deferred</tt> the response contains a handle to the <a href="#queryresult">result</a>. If the delivery mode is <tt>async</tt> the response contains a handle to the query’s <a href="#querystatus">status</a>.</li> |
| 112 | </ul> |
| 113 | <p><b>Command (immediate result delivery)</b></p> |
| 114 | |
| 115 | <div> |
| 116 | <div> |
| 117 | <pre class="source">$ curl -v --data-urlencode "statement=select 1;" \ |
| 118 | --data pretty=true \ |
| 119 | --data client_context_id=xyz \ |
| 120 | http://localhost:19002/query/service |
| 121 | </pre></div></div> |
| 122 | |
| 123 | <p><b>Sample response</b></p> |
| 124 | |
| 125 | <div> |
| 126 | <div> |
| 127 | <pre class="source">> POST /query/service HTTP/1.1 |
| 128 | > Host: localhost:19002 |
| 129 | > User-Agent: curl/7.43.0 |
| 130 | > Accept: */* |
| 131 | > Content-Length: 57 |
| 132 | > Content-Type: application/x-www-form-urlencoded |
| 133 | > |
| 134 | < HTTP/1.1 200 OK |
| 135 | < transfer-encoding: chunked |
| 136 | < connection: keep-alive |
| 137 | < content-type: application/json; charset=utf-8 |
| 138 | < |
| 139 | { |
| 140 | "requestID": "5f72e78c-482a-45bf-b174-6443c8273025", |
| 141 | "clientContextID": "xyz", |
| 142 | "signature": "*", |
| 143 | "results": [ { |
| 144 | "$1" : 1 |
| 145 | } ] |
| 146 | , |
| 147 | "status": "success", |
| 148 | "metrics": { |
| 149 | "elapsedTime": "20.263371ms", |
| 150 | "executionTime": "19.889389ms", |
| 151 | "resultCount": 1, |
| 152 | "resultSize": 15 |
| 153 | } |
| 154 | } |
| 155 | </pre></div></div> |
| 156 | |
| 157 | <p><b>Command (<a name="deferred" id="deferred">deferred result delivery</a>)</b></p> |
| 158 | |
| 159 | <div> |
| 160 | <div> |
| 161 | <pre class="source">$ curl -v --data-urlencode "statement=select 1;" \ |
| 162 | --data mode=deferred \ |
| 163 | http://localhost:19002/query/service |
| 164 | </pre></div></div> |
| 165 | |
| 166 | <p><b>Sample response</b></p> |
| 167 | |
| 168 | <div> |
| 169 | <div> |
| 170 | <pre class="source">> POST /query/service HTTP/1.1 |
| 171 | > Host: localhost:19002 |
| 172 | > User-Agent: curl/7.43.0 |
| 173 | > Accept: */* |
| 174 | > Content-Length: 37 |
| 175 | > Content-Type: application/x-www-form-urlencoded |
| 176 | > |
| 177 | < HTTP/1.1 200 OK |
| 178 | < transfer-encoding: chunked |
| 179 | < connection: keep-alive |
| 180 | < content-type: application/json; charset=utf-8 |
| 181 | < |
| 182 | { |
| 183 | "requestID": "6df7afb4-5f83-49b6-8c4b-f11ec84c4d7e", |
| 184 | "signature": "*", |
| 185 | "handle": "http://localhost:19002/query/service/result/7-0", |
| 186 | "status": "success", |
| 187 | "metrics": { |
| 188 | "elapsedTime": "12.270570ms", |
| 189 | "executionTime": "11.948343ms", |
| 190 | "resultCount": 0, |
| 191 | "resultSize": 0 |
| 192 | } |
| 193 | } |
| 194 | </pre></div></div> |
| 195 | |
| 196 | <p><b>Command (<a name="async" id="async>">async result delivery</a>)</b></p> |
| 197 | |
| 198 | <div> |
| 199 | <div> |
| 200 | <pre class="source">$ curl -v --data-urlencode "statement=select 1;" \ |
| 201 | --data mode=async \ |
| 202 | http://localhost:19002/query/service |
| 203 | </pre></div></div> |
| 204 | |
| 205 | <p><b>Sample response</b></p> |
| 206 | |
| 207 | <div> |
| 208 | <div> |
| 209 | <pre class="source">> POST /query/service HTTP/1.1 |
| 210 | > Host: localhost:19002 |
| 211 | > User-Agent: curl/7.43.0 |
| 212 | > Accept: */* |
| 213 | > Content-Length: 34 |
| 214 | > Content-Type: application/x-www-form-urlencoded |
| 215 | > |
| 216 | < HTTP/1.1 200 OK |
| 217 | < transfer-encoding: chunked |
| 218 | < connection: keep-alive |
| 219 | < content-type: application/json; charset=utf-8 |
| 220 | < |
| 221 | { |
| 222 | "requestID": "c5858420-d821-4c0c-81a4-2364386827c2", |
| 223 | "signature": "*", |
| 224 | "status": "running", |
| 225 | "handle": "http://localhost:19002/query/service/status/9-0", |
| 226 | "metrics": { |
| 227 | "elapsedTime": "9.727006ms", |
| 228 | "executionTime": "9.402282ms", |
| 229 | "resultCount": 0, |
| 230 | "resultSize": 0 |
| 231 | } |
| 232 | } |
| 233 | </pre></div></div> |
| 234 | </div> |
| 235 | <div class="section"> |
| 236 | <h2><a name="GET_.2Fquery.2Fservice.2Fstatus_.5BBack_to_TOC.5D"></a><a name="querystatus" id="querystatus">GET /query/service/status</a><font size="4"> <a href="#toc">[Back to TOC]</a></font></h2> |
| 237 | <p><b>Description</b> Returns status of an <tt>async</tt> query request. The response is a JSON object that has a similar structure to the responses for the <a href="#queryservice">/query/service</a> endpoint. Possible status values for the status are <tt>running</tt>, <tt>success</tt>, <tt>timeout</tt>, <tt>failed</tt>, and <tt>fatal</tt>. If the status value is <tt>success</tt>, the response also contains a handle to the <a href="#queryresult">result</a>. URLs for this endpoint are usually not constructed by the application, they are simply extracted from the <tt>handle</tt> field of the response to a request to the <a href="#queryservice">/query/service</a> endpoint.</p> |
| 238 | <p><b>Command</b></p> |
| 239 | <p>This example shows a request/reponse for the (opaque) status handle that was returned by the <a href="#async">async result delivery</a> example.</p> |
| 240 | |
| 241 | <div> |
| 242 | <div> |
| 243 | <pre class="source">$ curl -v http://localhost:19002/query/service/status/9-0 |
| 244 | </pre></div></div> |
| 245 | |
| 246 | <p><b>Sample response</b></p> |
| 247 | |
| 248 | <div> |
| 249 | <div> |
| 250 | <pre class="source">> GET /query/service/status/9-0 HTTP/1.1 |
| 251 | > Host: localhost:19002 |
| 252 | > User-Agent: curl/7.43.0 |
| 253 | > Accept: */* |
| 254 | > |
| 255 | < HTTP/1.1 200 OK |
| 256 | < transfer-encoding: chunked |
| 257 | < connection: keep-alive |
| 258 | < content-type: application/json; charset=utf-8 |
| 259 | < |
| 260 | { |
| 261 | "status": "success", |
| 262 | "handle": "http://localhost:19002/query/service/result/9-0" |
| 263 | } |
| 264 | </pre></div></div> |
| 265 | </div> |
| 266 | <div class="section"> |
| 267 | <h2><a name="GET_.2Fquery.2Fservice.2Fresult_.5BBack_to_TOC.5D"></a><a name="queryresult" id="queryresult">GET /query/service/result</a><font size="4"> <a href="#toc">[Back to TOC]</a></font></h2> |
| 268 | <p><b>Description</b> Returns result set for an <tt>async</tt> or <tt>deferred</tt> query request. The response is a plain result without a wrapping JSON object. URLs for this endpoint are usually not constructed by the application, they are simply extracted from the <tt>handle</tt> field of the response to a request to the <a href="#queryservice">/query/service</a> or the <a href="#querystatus">/query/service/status</a> endpoint.</p> |
| 269 | <p><b>Command</b></p> |
| 270 | <p>This example shows a request/reponse for the (opaque) result handle that was returned by the <a href="#deferred">deferred result delivery</a> example.</p> |
| 271 | |
| 272 | <div> |
| 273 | <div> |
| 274 | <pre class="source">$ curl -v http://localhost:19002/query/service/result/7-0 |
| 275 | </pre></div></div> |
| 276 | |
| 277 | <p><b>Sample response</b></p> |
| 278 | |
| 279 | <div> |
| 280 | <div> |
| 281 | <pre class="source">> GET /query/service/result/7-0 HTTP/1.1 |
| 282 | > Host: localhost:19002 |
| 283 | > User-Agent: curl/7.43.0 |
| 284 | > Accept: */* |
| 285 | > |
| 286 | < HTTP/1.1 200 OK |
| 287 | < transfer-encoding: chunked |
| 288 | < connection: keep-alive |
| 289 | < content-type: application/json |
| 290 | < |
| 291 | [ { "$1": 1 } |
| 292 | ] |
| 293 | </pre></div></div></div> |
| 294 | </div> |
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