-
Notifications
You must be signed in to change notification settings - Fork 11
/
MapServiceDownload.py
275 lines (255 loc) · 11.8 KB
/
MapServiceDownload.py
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
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
#-------------------------------------------------------------
# Name: Map Service Download
# Purpose: Downloads the data used in a map service layer by querying the json
# and converting to a feature class.
# Existing Mode - Will delete and append records, so field names need to be the same.
# New Mode - Copies data over (including archive datasets if needed). Requires no locks on geodatabase datasets being overwritten.
# Author: Shaun Weston ([email protected])
# Date Created: 14/08/2013
# Last Updated: 24/11/2015
# Copyright: (c) Eagle Technology
# ArcGIS Version: 10.3+
# Python Version: 2.7
#--------------------------------
# Import modules
import os
import sys
import logging
import smtplib
import arcpy
import json
import urllib
import urllib2
import uuid
import math
# Enable data to be overwritten
arcpy.env.overwriteOutput = True
# Set global variables
enableLogging = "false" # Use logger.info("Example..."), logger.warning("Example..."), logger.error("Example...")
logFile = "" # os.path.join(os.path.dirname(__file__), "Example.log")
sendErrorEmail = "false"
emailTo = ""
emailUser = ""
emailPassword = ""
emailSubject = ""
emailMessage = ""
enableProxy = "false"
requestProtocol = "http" # http or https
proxyURL = ""
output = None
# Start of main function
def mainFunction(mapServiceLayer,outputFeatureClass,updateMode): # Get parameters from ArcGIS Desktop tool by seperating by comma e.g. (var1 is 1st parameter,var2 is 2nd parameter,var3 is 3rd parameter)
try:
# --------------------------------------- Start of code --------------------------------------- #
# Querying thet map service to get the count of records
arcpy.AddMessage("Querying the map service...")
mapServiceQuery1 = mapServiceLayer + "/query?where=1%3D1&returnIdsOnly=true&f=pjson"
urlResponse = urllib.urlopen(mapServiceQuery1);
# Get json for the response - Object IDs
mapServiceQuery1JSONData = json.loads(urlResponse.read())
objectIDs = mapServiceQuery1JSONData["objectIds"]
objectIDs.sort()
arcpy.AddMessage("Number of records in the layer - " + str(len(objectIDs)) + "...")
# Set the number of records per request and the number of requests that need to be made
maxRecords = 1000
# If under maxRecords, just need to make one request
if (len(objectIDs) < maxRecords):
requestsToMake = 1
else:
# Calculate the number of requests - Always round up
requestsToMake = math.ceil(float(len(objectIDs)) / float(maxRecords))
arcpy.AddMessage("Downloading data to " + arcpy.env.scratchFolder + "...")
# For every request
count = 0
while (int(requestsToMake) > count):
# Create the query
startObjectID = int(objectIDs[count*maxRecords])
# If at the final request or if there is only one request that needs to be made
if ((int(requestsToMake) == (count+1)) or (requestsToMake == 1)):
# Get the last object ID
endObjectID = int(objectIDs[len(objectIDs)-1])
serviceQuery = "OBJECTID>%3D" + str(startObjectID) + "+AND+OBJECTID<%3D" + str(endObjectID)
else:
# Start object ID plus 1000 records
endObjectID = int(objectIDs[(count*maxRecords)+maxRecords])
serviceQuery = "OBJECTID>%3D" + str(startObjectID) + "+AND+OBJECTID<" + str(endObjectID)
# Query the map service to data in json format
try:
mapServiceQuery2 = mapServiceLayer + "/query?where=" + serviceQuery + "&returnCountOnly=false&returnIdsOnly=false&returnGeometry=true&outFields=*&f=pjson"
response = urllib2.urlopen(mapServiceQuery2)
except urllib2.URLError, e:
arcpy.AddError("There was an error: %r" % e)
# Download the data
fileChunk = 16 * 1024
downloadedFile = os.path.join(arcpy.env.scratchFolder, "Data-" + str(uuid.uuid1()) + ".json")
with open(downloadedFile, 'wb') as file:
downloadCount = 0
while True:
chunk = response.read(fileChunk)
# If data size is small
if ((downloadCount == 0) and (len(chunk) < 1000)):
# Log error and end download
arcpy.AddError("No data returned, check the URL...")
sys.exit()
if not chunk:
break
# Write chunk to output file
file.write(chunk)
downloadCount = downloadCount + 1
file.close()
# If it's the first request
if (count == 0):
# Create new dataset
arcpy.JSONToFeatures_conversion(downloadedFile, os.path.join(arcpy.env.scratchGDB, "Dataset"))
else:
# Create dataset and load into existing
arcpy.JSONToFeatures_conversion(downloadedFile, "in_memory\\DatasetTemp")
arcpy.Append_management("in_memory\\DatasetTemp", os.path.join(arcpy.env.scratchGDB, "Dataset"), "NO_TEST", "", "")
# If at the final request or if there is only one request that needs to be made
if ((int(requestsToMake) == (count+1)) or (requestsToMake == 1)):
arcpy.AddMessage("Downloaded and converted JSON for " + str(len(objectIDs)) + " of " + str(len(objectIDs)) + " features...")
else:
arcpy.AddMessage("Downloaded and converted JSON for " + str((count+1)*maxRecords) + " of " + str(len(objectIDs)) + " features...")
count = count + 1
# Convert JSON to feature class
arcpy.AddMessage("Copying over final dataset...")
# Overwrite dataset
if (updateMode.lower() == "new"):
# Get record count
recordCount = arcpy.GetCount_management(os.path.join(arcpy.env.scratchGDB, "Dataset"))
arcpy.AddMessage("Number of records for " + outputFeatureClass + " - " + str(recordCount))
# Logging
if (enableLogging == "true"):
# Log record count
logger.info("Number of records for " + outputFeatureClass + " - " + str(recordCount))
# Load in data
if (recordCount > 0):
arcpy.CopyFeatures_management(os.path.join(arcpy.env.scratchGDB, "Dataset"), outputFeatureClass, "", "0", "0", "0")
# Delete and append
else:
# Get record count
recordCount = arcpy.GetCount_management(os.path.join(arcpy.env.scratchGDB, "Dataset"))
arcpy.AddMessage("Number of records for " + outputFeatureClass + " - " + str(recordCount))
# Logging
if (enableLogging == "true"):
# Log record count
logger.info("Number of records for " + outputFeatureClass + " - " + str(recordCount))
# Load in data
if (recordCount > 0):
arcpy.DeleteFeatures_management(outputFeatureClass)
arcpy.Append_management(os.path.join(arcpy.env.scratchGDB, "Dataset"), outputFeatureClass, "NO_TEST", "", "")
# --------------------------------------- End of code --------------------------------------- #
# If called from gp tool return the arcpy parameter
if __name__ == '__main__':
# Return the output if there is any
if output:
arcpy.SetParameterAsText(1, output)
# Otherwise return the result
else:
# Return the output if there is any
if output:
return output
# Logging
if (enableLogging == "true"):
# Log end of process
logger.info("Process ended.")
# Remove file handler and close log file
logMessage.flush()
logMessage.close()
logger.handlers = []
# If arcpy error
except arcpy.ExecuteError:
# Build and show the error message
errorMessage = arcpy.GetMessages(2)
arcpy.AddError(errorMessage)
# Logging
if (enableLogging == "true"):
# Log error
logger.error(errorMessage)
# Log end of process
logger.info("Process ended.")
# Remove file handler and close log file
logMessage.flush()
logMessage.close()
logger.handlers = []
if (sendErrorEmail == "true"):
# Send email
sendEmail(errorMessage)
# If python error
except Exception as e:
errorMessage = ""
# Build and show the error message
for i in range(len(e.args)):
if (i == 0):
errorMessage = unicode(e.args[i]).encode('utf-8')
else:
errorMessage = errorMessage + " " + unicode(e.args[i]).encode('utf-8')
arcpy.AddError(errorMessage)
# Logging
if (enableLogging == "true"):
# Log error
logger.error(errorMessage)
# Log end of process
logger.info("Process ended.")
# Remove file handler and close log file
logMessage.flush()
logMessage.close()
logger.handlers = []
if (sendErrorEmail == "true"):
# Send email
sendEmail(errorMessage)
# End of main function
# Start of set logging function
def setLogging(logFile):
# Create a logger
logger = logging.getLogger(os.path.basename(__file__))
logger.setLevel(logging.DEBUG)
# Setup log message handler
logMessage = logging.FileHandler(logFile)
# Setup the log formatting
logFormat = logging.Formatter("%(asctime)s: %(levelname)s - %(message)s", "%d/%m/%Y - %H:%M:%S")
# Add formatter to log message handler
logMessage.setFormatter(logFormat)
# Add log message handler to logger
logger.addHandler(logMessage)
return logger, logMessage
# End of set logging function
# Start of send email function
def sendEmail(message):
# Send an email
arcpy.AddMessage("Sending email...")
# Server and port information
smtpServer = smtplib.SMTP("smtp.gmail.com",587)
smtpServer.ehlo()
smtpServer.starttls()
smtpServer.ehlo
# Login with sender email address and password
smtpServer.login(emailUser, emailPassword)
# Email content
header = 'To:' + emailTo + '\n' + 'From: ' + emailUser + '\n' + 'Subject:' + emailSubject + '\n'
body = header + '\n' + emailMessage + '\n' + '\n' + message
# Send the email and close the connection
smtpServer.sendmail(emailUser, emailTo, body)
# End of send email function
# This test allows the script to be used from the operating
# system command prompt (stand-alone), in a Python IDE,
# as a geoprocessing script tool, or as a module imported in
# another script
if __name__ == '__main__':
# Arguments are optional - If running from ArcGIS Desktop tool, parameters will be loaded into *argv
argv = tuple(arcpy.GetParameterAsText(i)
for i in range(arcpy.GetArgumentCount()))
# Logging
if (enableLogging == "true"):
# Setup logging
logger, logMessage = setLogging(logFile)
# Log start of process
logger.info("Process started.")
# Setup the use of a proxy for requests
if (enableProxy == "true"):
# Setup the proxy
proxy = urllib2.ProxyHandler({requestProtocol : proxyURL})
openURL = urllib2.build_opener(proxy)
# Install the proxy
urllib2.install_opener(openURL)
mainFunction(*argv)