|
1
|
|
|
from __future__ import absolute_import |
|
2
|
|
|
import json |
|
3
|
|
|
import os |
|
4
|
|
|
|
|
5
|
|
|
from ._connection import DatabaseConnection |
|
6
|
|
|
from ._connectorobject import ConnectorObject |
|
7
|
|
|
|
|
8
|
|
|
from ._datapointarray import DatapointArray |
|
9
|
|
|
|
|
10
|
|
|
class Device(ConnectorObject): |
|
11
|
|
|
|
|
12
|
|
|
def create(self, public=False, **kwargs): |
|
13
|
|
|
"""Creates the device. Attempts to create private devices by default, |
|
14
|
|
|
but if public is set to true, creates public devices. |
|
15
|
|
|
|
|
16
|
|
|
You can also set other default properties by passing in the relevant information. |
|
17
|
|
|
For example, setting a device with the given nickname and description:: |
|
18
|
|
|
|
|
19
|
|
|
dev.create(nickname="mydevice", description="This is an example") |
|
20
|
|
|
|
|
21
|
|
|
Furthermore, ConnectorDB supports creation of a device's streams immediately, |
|
22
|
|
|
which can considerably speed up device setup:: |
|
23
|
|
|
|
|
24
|
|
|
dev.create(streams={ |
|
25
|
|
|
"stream1": {"schema": '{\"type\":\"number\"}'} |
|
26
|
|
|
}) |
|
27
|
|
|
|
|
28
|
|
|
Note that the schema must be encoded as a string when creating in this format. |
|
29
|
|
|
""" |
|
30
|
|
|
kwargs["public"] = public |
|
31
|
|
|
self.metadata = self.db.create(self.path, kwargs).json() |
|
32
|
|
|
|
|
33
|
|
View Code Duplication |
def streams(self): |
|
|
|
|
|
|
34
|
|
|
"""Returns the list of streams that belong to the device""" |
|
35
|
|
|
result = self.db.read(self.path, {"q": "ls"}) |
|
36
|
|
|
|
|
37
|
|
|
if result is None or result.json() is None: |
|
38
|
|
|
return [] |
|
39
|
|
|
streams = [] |
|
40
|
|
|
for s in result.json(): |
|
41
|
|
|
strm = self[s["name"]] |
|
42
|
|
|
strm.metadata = s |
|
43
|
|
|
streams.append(strm) |
|
44
|
|
|
return streams |
|
45
|
|
|
|
|
46
|
|
|
def __getitem__(self, stream_name): |
|
47
|
|
|
"""Gets the child stream by name""" |
|
48
|
|
|
return Stream(self.db, self.path + "/" + stream_name) |
|
49
|
|
|
|
|
50
|
|
|
def __repr__(self): |
|
51
|
|
|
"""Returns a string representation of the device""" |
|
52
|
|
|
return "[Device:%s]" % (self.path, ) |
|
53
|
|
|
|
|
54
|
|
|
def export(self, directory): |
|
55
|
|
|
"""Exports the device to the given directory. The directory can't exist. |
|
56
|
|
|
You can later import this device by running import_device on a user. |
|
57
|
|
|
""" |
|
58
|
|
|
if os.path.exists(directory): |
|
59
|
|
|
raise FileExistsError( |
|
60
|
|
|
"The device export directory already exists") |
|
61
|
|
|
|
|
62
|
|
|
os.mkdir(directory) |
|
63
|
|
|
|
|
64
|
|
|
# Write the device's info |
|
65
|
|
|
with open(os.path.join(directory, "device.json"), "w") as f: |
|
66
|
|
|
json.dump(self.data, f) |
|
67
|
|
|
|
|
68
|
|
|
# Now export the streams one by one |
|
69
|
|
|
for s in self.streams(): |
|
70
|
|
|
s.export(os.path.join(directory, s.name)) |
|
71
|
|
|
|
|
72
|
|
|
def import_stream(self, directory): |
|
73
|
|
|
"""Imports a stream from the given directory. You export the Stream |
|
74
|
|
|
by using stream.export()""" |
|
75
|
|
|
|
|
76
|
|
|
# read the stream's info |
|
77
|
|
|
with open(os.path.join(directory, "stream.json"), "r") as f: |
|
78
|
|
|
sdata = json.load(f) |
|
79
|
|
|
|
|
80
|
|
|
s = self[sdata["name"]] |
|
81
|
|
|
if s.exists(): |
|
82
|
|
|
raise ValueError("The stream " + s.name + " already exists") |
|
83
|
|
|
|
|
84
|
|
|
# Create the stream empty first, so we can insert all the data without |
|
85
|
|
|
# worrying about schema violations or downlinks |
|
86
|
|
|
s.create() |
|
87
|
|
|
|
|
88
|
|
|
# Now, in order to insert data into this stream, we must be logged in as |
|
89
|
|
|
# the owning device |
|
90
|
|
|
ddb = DatabaseConnection(self.apikey, url=self.db.baseurl) |
|
91
|
|
|
d = Device(ddb, self.path) |
|
92
|
|
|
|
|
93
|
|
|
# Set up the owning device |
|
94
|
|
|
sown = d[s.name] |
|
95
|
|
|
|
|
96
|
|
|
# read the stream's info |
|
97
|
|
|
sown.insert_array(DatapointArray().loadExport(directory)) |
|
98
|
|
|
|
|
99
|
|
|
# Now we MIGHT be able to recover the downlink data, |
|
100
|
|
|
# only if we are not logged in as the device that the stream is being inserted into |
|
101
|
|
|
# So we check. When downlink is true, data is inserted into the |
|
102
|
|
|
# downlink stream |
|
103
|
|
|
if (sdata["downlink"] and self.db.path != self.path): |
|
104
|
|
|
s.downlink = True |
|
105
|
|
|
with open(os.path.join(directory, "downlink.json"), "r") as f: |
|
106
|
|
|
s.insert_array(json.load(f)) |
|
107
|
|
|
|
|
108
|
|
|
# And finally, update the device |
|
109
|
|
|
del sdata["name"] |
|
110
|
|
|
s.set(sdata) |
|
111
|
|
|
|
|
112
|
|
|
# ----------------------------------------------------------------------- |
|
113
|
|
|
# Following are getters and setters of the device's properties |
|
114
|
|
|
|
|
115
|
|
|
@property |
|
116
|
|
|
def apikey(self): |
|
117
|
|
|
"""gets the device's api key. Returns None if apikey not accessible.""" |
|
118
|
|
|
if "apikey" in self.data: |
|
119
|
|
|
return self.data["apikey"] |
|
120
|
|
|
return None |
|
121
|
|
|
|
|
122
|
|
|
def reset_apikey(self): |
|
123
|
|
|
"""invalidates the device's current api key, and generates a new one""" |
|
124
|
|
|
self.set({"apikey": ""}) |
|
125
|
|
|
return self.metadata["apikey"] |
|
126
|
|
|
|
|
127
|
|
|
@property |
|
128
|
|
|
def public(self): |
|
129
|
|
|
"""gets whether the device is public |
|
130
|
|
|
(this means different things based on connectordb permissions setup - connectordb.com |
|
131
|
|
|
has this be whether the device is publically visible. Devices are individually public/private.) |
|
132
|
|
|
""" |
|
133
|
|
|
if "public" in self.data: |
|
134
|
|
|
return self.data["public"] |
|
135
|
|
|
return None |
|
136
|
|
|
|
|
137
|
|
|
@public.setter |
|
138
|
|
|
def public(self, new_public): |
|
139
|
|
|
"""Attempts to set whether the device is public""" |
|
140
|
|
|
self.set({"public": new_public}) |
|
141
|
|
|
|
|
142
|
|
|
@property |
|
143
|
|
|
def role(self): |
|
144
|
|
|
"""Gets the role of the device. This is the permissions level that the device has. It might |
|
145
|
|
|
not be accessible depending on the permissions setup of ConnectorDB. Returns None if not accessible""" |
|
146
|
|
|
if "role" in self.data: |
|
147
|
|
|
return self.data["role"] |
|
148
|
|
|
return None |
|
149
|
|
|
|
|
150
|
|
|
@role.setter |
|
151
|
|
|
def role(self, new_role): |
|
152
|
|
|
""" Attempts to set the device's role""" |
|
153
|
|
|
self.set({"role": new_role}) |
|
154
|
|
|
|
|
155
|
|
|
@property |
|
156
|
|
|
def enabled(self): |
|
157
|
|
|
""" gets whether the device is enabled. This allows a device to notify ConnectorDB when |
|
158
|
|
|
it is active and when it is not running""" |
|
159
|
|
|
if "enabled" in self.data: |
|
160
|
|
|
return self.data["enabled"] |
|
161
|
|
|
return None |
|
162
|
|
|
|
|
163
|
|
|
@enabled.setter |
|
164
|
|
|
def enabled(self, new_enabled): |
|
165
|
|
|
"""Sets the enabled state of the device""" |
|
166
|
|
|
self.set({"enabled": new_enabled}) |
|
167
|
|
|
|
|
168
|
|
|
@property |
|
169
|
|
|
def user(self): |
|
170
|
|
|
"""user returns the user which owns the given device""" |
|
171
|
|
|
return User(self.db, self.path.split("/")[0]) |
|
172
|
|
|
|
|
173
|
|
|
|
|
174
|
|
|
# The import has to go on the bottom because py3 imports are annoying |
|
175
|
|
|
# about circular dependencies |
|
176
|
|
|
from ._user import User |
|
177
|
|
|
from ._stream import Stream |
|
178
|
|
|
|
connectordb /
connectordb-python
Loading history...