1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
# -*- coding: utf-8 -*-
#
# Copyright 2014 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Simple command-line sample for Google Maps Engine.
This sample code demonstrates use of the Google Maps Engine API. For more
information on the API, see developers.google.com/maps-engine/documentation/
These samples allow you to
1) List projects you have access to
2) List tables in a given project.
3) Upload a shapefile to create a Table asset.
Usage:
$ python maps_engine.py [-p project_id] [-s shapefile]
If you do not enter a shapefile, it will upload the included "polygons".
You can also get help on all the command-line flags the program understands
by running:
$ python maps_engine.py --help
To get detailed log output run:
$ python maps_engine.py -p 123456 --logging_level=DEBUG
"""
__author__ = "jlivni@google.com (Josh Livni)"
import argparse
import json
import logging
import sys
import time
from googleapiclient import sample_tools
from googleapiclient.http import MediaFileUpload
logging.basicConfig(level=logging.INFO)
# Declare command-line flags.
argparser = argparse.ArgumentParser(add_help=False)
argparser.add_argument("-p", "--project_id", help="optional GME Project ID")
argparser.add_argument("-s", "--shapefile", help="Shapefile (without the .shp)")
SUCCESSFUL_STATUS = ["processed", "complete", "ready"]
class MapsEngineSampleException(Exception):
"""Catch this for failures specific to this sample code."""
def ListProjects(service):
"""List the projects available to the authorized account.
Args:
service: The service object built by the Google API Python client library.
"""
projects = service.projects().list().execute()
logging.info(json.dumps(projects, indent=2))
def ListTables(service, project_id):
"""List the tables in a given project.
Args:
service: The service object built by the Google API Python client library.
project_id: string, id of the GME project.
"""
tables = service.tables().list(projectId=project_id).execute()
logging.info(json.dumps(tables, indent=2))
def UploadShapefile(service, project_id, shapefile_prefix):
"""Upload a shapefile to a given project, and display status when complete.
Args:
service: The service object built by the Google API Python client library.
project_id: string, id of the GME project.
shapefile_prefix: string, the shapefile without the .shp suffix.
Returns:
String id of the table asset.
"""
# A shapefile is actually a bunch of files; GME requires these four suffixes.
suffixes = ["shp", "dbf", "prj", "shx"]
files = []
for suffix in suffixes:
files.append({"filename": "%s.%s" % (shapefile_prefix, suffix)})
metadata = {
"projectId": project_id,
"name": shapefile_prefix,
"description": "polygons that were uploaded by a script",
"files": files,
# You need the string value of a valid shared and published ACL
# Check the "Access Lists" section of the Maps Engine UI for a list.
"draftAccessList": "Map Editors",
"tags": [shapefile_prefix, "auto_upload", "kittens"],
}
logging.info("Uploading metadata for %s", shapefile_prefix)
response = service.tables().upload(body=metadata).execute()
# We have now created an empty asset.
table_id = response["id"]
# And now upload each of the files individually, passing in the table id.
for suffix in suffixes:
shapefile = "%s.%s" % (shapefile_prefix, suffix)
media_body = MediaFileUpload(shapefile, mimetype="application/octet-stream")
logging.info("uploading %s", shapefile)
response = (
service.tables()
.files()
.insert(id=table_id, filename=shapefile, media_body=media_body)
.execute()
)
# With all files uploaded, check status of the asset to ensure it's processed.
CheckAssetStatus(service, "tables", table_id)
return table_id
def CheckAssetStatus(service, asset_type, asset_id):
endpoint = getattr(service, asset_type)
response = endpoint().get(id=asset_id).execute()
status = response["processingStatus"]
logging.info("Asset Status: %s", status)
if status in SUCCESSFUL_STATUS:
logging.info("asset successfully processed; the id is %s", asset_id)
else:
logging.info("Asset %s; will check again in 5 seconds", status)
time.sleep(5)
CheckAssetStatus(service, asset_type, asset_id)
def main(argv):
# Authenticate and construct service.
service, flags = sample_tools.init(
argv,
"mapsengine",
"v1",
__doc__,
__file__,
parents=[argparser],
scope="https://www.googleapis.com/auth/mapsengine",
)
if flags.project_id:
# ListTables(service, flags.project_id)
# The example polygons shapefile should be in this directory.
filename = flags.shapefile or "polygons"
table_id = UploadShapefile(service, flags.project_id, filename)
logging.info("Sucessfully created table: %s", table_id)
else:
ListProjects(service)
return
if __name__ == "__main__":
main(sys.argv)
|
