HTTP Server Adapter
The http_server adapter creates an http server and reads points from
incoming http requests.
read http_server
Read points by pushing the contents of http requests into the Juttle flowgraph
read http_server -port port
                 -method method
                 -timeField timeField
                 -separator character
                 -commentSymbol character
                 -ignoreEmptyLines true/false
                 -allowIncompleteLines true/false
| Parameter | Description | Required? | 
|---|---|---|
| -port | Port for HTTP Server to listen on | No; default: 8080 | 
| -method | HTTP method to use Currently only supports POSTorPUT | No; default: POST | 
| -timeField | The name of the field to use as the time field The specified field will be renamed to timein the body of the HTTP request. If the points already contain a field calledtimethat field is overwritten. This is useful when the source data contains a time field whose values are not valid time stamps. | No; defaults to keeping the timefield as is | 
| -rootPath | When the incoming data is JSON, use the specified path into the incoming object (expressed as field1.field2to emit points | No | 
| -separator | When -format 'csv'is used, you can specify the separator between columns in a CSV file. | No: defaults to , | 
| -commentSymbol | When -format 'csv'is used, you can specify the comment character that prefixes comment lines in a CSV file. | No: defaults to , | 
| -ignoreEmptyLines | When -format 'csv'is used, you can skip empty lines in a CSV file. | No: defaults to false | 
| -allowIncompleteLines | When -format 'csv'is used, you can allow for parsing of incomplete lines in a CSV file. | No: defaults to false | 
Currently the read http_server adapter will automatically parse incoming data based off of the content-type header. Here are the currently supported content-types:
* `text/csv`: for [CSV](https://tools.ietf.org/html/rfc4180) data
* `application/json` for [JSON](https://tools.ietf.org/html/rfc7159) data
* `application/json` for [JSON lines](http://jsonlines.org/) data
Example
Create a simple http server on port 2000.
/*
 * Create an http server on port 2000. View points in a table.
 *
 */
 read http_server -port 2000
 | view table;
Send points to server by running this curl command:
curl -H "Content-Type: application/json" -X POST -d '{"hello": "world"}'  http://localhost:2000