The HTTP transport handler allows the communication over the HTTP standard.
Options
uri:The URImethod: The HTTP method, one of: GET, POST, PUT, DELETE, HEAD (default: GET) (optional)body: The content for POST and PUT requests when using this transport handler for a source (optional)chunked: Controls the 'chunked' header (see Chunked transfer encoding). (default: true) (optional)- scheduler.delay: If you want to query in a given time-interval. The unit are milliseconds.
- oneDocPerCall: If set to false, the transport handler assumes an endless stream. If set to false, assumes whole documents per call
Example
PQL
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input = ACCESS({source='Source',
wrapper='GenericPull',
transport='HTTP',
protocol='CSV',
dataHandler='Tuple',
options=[['uri', 'http://www.example.com'], ['method', 'get']],
schema=[
['id', 'Double'],
['data', 'String']]
})
output = SENDER({sink='Sink',
wrapper='GenericPush',
transport='HTTP',
protocol='CSV',
dataHandler='Tuple',
options=[['uri', 'http://www.example.com'], ['method', 'post']]
}, input)
/// Example for the scheduler.delay option
#PARSER PQL
#ADDQUERY
finance2 = ACCESS({
source='Google',
wrapper='GenericPull',
transport='HTTP',
protocol='Document',
datahandler='Document',
options=[
['uri', 'http://google.de'],
['scheduler.delay','1000'],
['oneDocPerCall','true'],
['contentType','application/json']
]
}
) |
CQL
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CREATE STREAM source (id Double, data STRING)
WRAPPER 'GenericPush'
PROTOCOL 'CSV'
TRANSPORT 'HTTP'
DATAHANDLER 'Tuple'
OPTIONS ( 'uri' 'http://www.example.com' 'method' 'get')
CREATE SINK sink (id Double, data STRING)
WRAPPER 'GenericPush'
PROTOCOL 'CSV'
TRANSPORT 'HTTP'
DATAHANDLER 'Tuple'
OPTIONS ( 'uri' 'http://www.example.com' 'method' 'post')
|