def render_GET(self, request):
"""The GET method exposes a RESTful API to ARD functions.
This lets clients look at tags and get data.
"""
if len(request.prepath) == 1:
return self.send_reply((request, {'Contents': ['streams', 'query', 'data',
'next', 'prev', 'tags',
'operators']}))
# start by looking up the set of streams we are going to operate on
path = map(lambda x: x.replace('__', '/'), request.prepath[2:])
path = map(urllib.unquote, path)
method = request.prepath[1]
# dispatch based on the method name
if method != 'query':
if len(path) % 2 != 0:
request.setResponseCode(400)
request.finish()
return server.NOT_DONE_YET
path.append('uuid')
if method == 'query':
if 'q' in request.args:
return self.render_POST(request, request.args['q'][0])
else:
# this allows a user to enumerate tags
d = build_query(self.db,
request,
zip(path[::2],
path[1::2] + [None]))
d.addCallback(lambda r: self.generic_extract_result(request, r))
d.addCallback(self.send_reply)
elif method == 'tags':
# retrieve tags
d = build_tag_query(self.db,
request,
zip(path[::2],
path[1::2] + [None]))
d.addCallback(lambda r: self.tag_extract_result(request, r))
d.addCallback(self.send_reply)
elif method in ['data', 'next', 'prev']:
# retrieve data
d = self.db.runQuery("""SELECT uuid, id FROM stream WHERE
id IN """ + build_inner_query(request,
zip(path[::2],
path[1::2] + [None]))[0])
d.addCallback(log_time, time.time())
d.addCallback(lambda r: data_load_result(request, method, r))
d.addCallback(lambda d: (request, d))
d.addCallback(self.send_data_reply)
elif method == 'operators':
self.send_reply((request, stream.installed_ops.keys()))
else:
request.setResponseCode(404)
request.finish()
return server.NOT_DONE_YET
def render_GET(self, request):
"""The GET method exposes a RESTful API to ARD functions.
This lets clients look at tags and get data.
"""
if len(request.prepath) == 1:
return self.send_reply((request, {
'Contents': [
'streams', 'query', 'data', 'next', 'prev', 'tags',
'operators'
]
}))
# start by looking up the set of streams we are going to operate on
path = map(lambda x: x.replace('__', '/'), request.prepath[2:])
path = map(urllib.unquote, path)
method = request.prepath[1]
# dispatch based on the method name
if method != 'query':
if len(path) % 2 != 0:
request.setResponseCode(400)
request.finish()
return server.NOT_DONE_YET
path.append('uuid')
if method == 'query':
if 'q' in request.args:
return self.render_POST(request, request.args['q'][0])
else:
# this allows a user to enumerate tags
d = build_query(self.db, request,
zip(path[::2], path[1::2] + [None]))
d.addCallback(
lambda r: self.generic_extract_result(request, r))
d.addCallback(self.send_reply)
elif method == 'tags':
# retrieve tags
d = build_tag_query(self.db, request,
zip(path[::2], path[1::2] + [None]))
d.addCallback(lambda r: self.tag_extract_result(request, r))
d.addCallback(self.send_reply)
elif method in ['data', 'next', 'prev']:
# retrieve data
d = self.db.runQuery("""SELECT uuid, id FROM stream WHERE
id IN """ + build_inner_query(request, zip(path[::2], path[1::2] + [None]))[0])
d.addCallback(log_time, time.time())
d.addCallback(lambda r: data_load_result(request, method, r))
d.addCallback(lambda d: (request, d))
d.addCallback(self.send_data_reply)
elif method == 'operators':
self.send_reply((request, stream.installed_ops.keys()))
else:
request.setResponseCode(404)
request.finish()
return server.NOT_DONE_YET
def extract_data(streams, method, start, end, limit=10, streamlimit=10, ndarray=False):
request = Request()
request.args = {
'starttime' : [start],
'endtime' : [end],
'limit' : [limit],
'streamlimit' : [streamlimit]
}
d = data_load_result(request, method, streams, ndarray=ndarray, as_smapobj=True)
d.addCallback(_extract_data)
d.addErrback(_errback)
return d
def extract_data(streams,
method,
start,
end,
limit=10,
streamlimit=10,
ndarray=False):
request = Request()
request.args = {
'starttime': [start],
'endtime': [end],
'limit': [limit],
'streamlimit': [streamlimit]
}
d = data_load_result(request,
method,
streams,
ndarray=ndarray,
as_smapobj=True)
d.addCallback(_extract_data)
d.addErrback(_errback)
return d
