Mercurial > hg > gcmultimerge
annotate multimerge.py @ 55:5b78f62b7de7
More work on merging stuff.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Tue, 05 Jul 2016 21:18:03 +0300 |
parents | 86d3a8eddbd7 |
children | 597875ef885b |
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1 | 1 #!/usr/bin/python |
3 | 2 # coding=utf-8 |
2 | 3 ### |
36 | 4 ### Google Calendar MultiMerge |
2 | 5 ### (C) 2016 Matti 'ccr' Hamalainen <ccr@tnsp.org> |
6 ### | |
7 ### Python 2.7 <= x < 3 required! Please refer to | |
8 ### README.txt for information on other depencies. | |
9 ### | |
1 | 10 import os |
11 import sys | |
12 import signal | |
13 import re | |
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14 import codecs |
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15 #import time |
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16 #import datetime |
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17 |
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18 import smtplib |
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19 from email.mime.text import MIMEText |
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20 |
1 | 21 import httplib2 |
22 import ConfigParser | |
20 | 23 |
1 | 24 import oauth2client |
25 from oauth2client import client | |
26 from oauth2client import tools | |
4 | 27 from oauth2client import file |
1 | 28 from googleapiclient import discovery |
29 | |
30 | |
31 ### | |
32 ### Misc. helper functions | |
33 ### | |
34 | |
35 ## Wrapper for print() that does not break when redirecting stdin/out | |
36 ## because of piped output not having a defined encoding. We default | |
37 ## to UTF-8 encoding in output here. | |
38 def gcm_print(smsg): | |
47 | 39 gcm_msgbuf.append(smsg) |
1 | 40 if sys.stdout.encoding != None: |
41 print(smsg.encode(sys.stdout.encoding)) | |
42 else: | |
43 print(smsg.encode("UTF-8")) | |
44 | |
45 | |
46 ## Fatal errors | |
47 def gcm_fatal(smsg): | |
48 gcm_print(u"ERROR: "+ smsg) | |
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49 if cfg.email_ok and cfg.email: |
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50 ## If e-mail is set, send e-mail |
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51 msg = MIMEText(("\n".join(gcm_msgbuf)).encode("UTF-8"), "plain") |
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52 msg.set_charset("UTF-8") |
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53 msg["Subject"] = cfg.email_subject |
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54 msg["From"] = cfg.email_sender |
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55 msg["To"] = ",".join(cfg.email_to) |
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56 try: |
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57 smtpH = smtplib.SMTP('localhost') |
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58 smtpH.sendmail(cfg.email_sender, cfg.email_to, msg.as_string()) |
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59 smtpH.quit() |
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60 except: |
54 | 61 gcm_print(u"FATAL: Oh crap, e-mail sending failed.") |
1 | 62 sys.exit(1) |
63 | |
64 | |
65 ## Debug messages | |
66 def gcm_debug(smsg): | |
67 if cfg.debug: | |
68 gcm_print(u"DBG: "+ smsg) | |
69 else: | |
47 | 70 gcm_msgbuf.append(u"DBG: {0}".format(smsg)) |
1 | 71 |
72 | |
24 | 73 ## Handler for SIGINT signals |
1 | 74 def gcm_signal_handler(signal, frame): |
54 | 75 gcm_print(u"\nQuitting due to SIGINT / Ctrl+C!") |
1 | 76 sys.exit(0) |
77 | |
78 | |
24 | 79 ## Function for handling Google API credentials |
1 | 80 def gcm_get_credentials(mcfg): |
42 | 81 try: |
82 store = oauth2client.file.Storage(mcfg.credential_file) | |
83 except Exception as e: | |
84 gcm_fatal("Failed to read credential file:\n{0}\n\nERROR: {1}\n".format(mcfg.credential_file, str(e))) | |
85 | |
1 | 86 credentials = store.get() |
87 if not credentials or credentials.invalid: | |
42 | 88 try: |
89 flow = client.flow_from_clientsecrets(mcfg.secret_file, mcfg.scope) | |
90 except Exception as e: | |
91 gcm_fatal("Failed to fetch client secret:\n{0}\n\nERROR: {1}\n".format(mcfg.secret_file, str(e))) | |
92 | |
1 | 93 flow.user_agent = mcfg.app_name |
94 credentials = tools.run_flow(flow, store, mcfg) | |
95 if not credentials or credentials.invalid: | |
96 gcm_fatal("Failed to authenticate / invalid credentials.") | |
97 return credentials | |
98 | |
99 | |
100 def gcm_dump_events(events): | |
101 for event in events: | |
102 ev_start = event["start"].get("dateTime", event["start"].get("date")) | |
103 ev_end = event["end"].get("dateTime", event["end"].get("date")) | |
104 gcm_print(u"{0:25} - {1:25} : {2}".format(ev_start, ev_end, event["summary"])) | |
105 | |
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106 def gcm_generate_ids(events, calendar_id): |
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107 if not events: |
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108 return events |
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109 |
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110 for ev in events: |
28 | 111 ev["gcm_cal_id"] = calendar_id |
30 | 112 ev["gcm_id"] = re.sub("[^a-v0-9]", "0", calendar_id.lower()) + ev["id"] |
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113 |
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114 return events |
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115 |
1 | 116 |
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117 ## Find event by its gcm_id from given list or return None if not found |
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118 def gcm_get_event_by_gcm_id(list, id): |
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119 for event in list: |
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120 if event["gcm_id"] == id: |
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121 return event |
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122 return None |
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123 |
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124 |
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125 gcm_no_compare_fields = [u"id", u"iCalUID"] |
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126 |
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127 def gcm_compare_events(ev1, ev2): |
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128 for field in ev1: |
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129 if not field in gcm_no_compare_fields and ev1[field] != ev2[field]: |
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130 return False |
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131 return True |
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132 |
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133 |
24 | 134 ## |
135 ## Class for handling configuration / settings | |
136 ## | |
1 | 137 class GCMSettings(dict): |
138 def __init__(self): | |
139 self.m_data = {} | |
140 self.m_saveable = {} | |
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141 self.m_validate = {} |
1 | 142 self.m_translate = {} |
143 | |
144 def __getattr__(self, name): | |
145 if name in self.m_data: | |
146 return self.m_data[name] | |
147 else: | |
148 gcm_fatal("GCMSettings.__getattr__(): No such attribute '"+ name +"'.") | |
149 | |
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150 def mvalidate(self, name, value): |
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151 if name in self.m_validate and self.m_validate[name]: |
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152 if not self.m_validate[name](value): |
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153 gcm_fatal("GCMSettings.mvalidate(): Invalid value for attribute '{0}': {1}".format(name, value)) |
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154 |
1 | 155 def mtranslate(self, name, value): |
156 if name in self.m_translate and self.m_translate[name]: | |
157 return self.m_translate[name](value) | |
158 else: | |
159 return value | |
160 | |
161 def mdef(self, name, saveable, validate, translate, value): | |
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162 self.mvalidate(name, value) |
1 | 163 self.m_saveable[name] = saveable |
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164 self.m_validate[name] = validate |
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165 self.m_translate[name] = translate |
1 | 166 self.m_data[name] = self.mtranslate(name, value) |
167 | |
168 def mset(self, name, value): | |
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169 self.mvalidate(name, value) |
1 | 170 if name in self.m_data: |
171 self.m_data[name] = self.mtranslate(name, value) | |
172 else: | |
43 | 173 gcm_fatal(u"GCMSettings.mset(): No such attribute '"+ name +"'.") |
1 | 174 |
175 def mget(self, name): | |
176 if name in self.m_data: | |
177 return self.m_data[name] | |
178 else: | |
179 return None | |
180 | |
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181 def mread(self, cfgparser, sect): |
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182 for name in self.m_saveable: |
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183 if cfgparser.has_option(sect, name): |
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184 value = cfgparser.get(sect, name) |
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185 self.mset(name, value) |
43 | 186 gcm_debug(u"{0} -> '{1}' == {2}".format(name, value, self.mget(name))) |
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187 |
23 | 188 def is_str(self, mvalue): |
189 return isinstance(mvalue, basestring) | |
190 | |
191 def is_string(self, mvalue): | |
192 return mvalue == None or self.is_str(mvalue) | |
193 | |
194 def is_log_level(self, mvalue): | |
195 if not self.is_str(mvalue): | |
196 return False | |
197 else: | |
198 return mvalue.upper() in ["CRITICAL", "ERROR", "WARNING", "INFO", "DEBUG"] | |
199 | |
200 def trans_log_level(self, mvalue): | |
201 return mvalue.upper() | |
202 | |
203 def is_filename(self, mvalue): | |
204 if not self.is_str(mvalue): | |
205 return False | |
206 else: | |
207 return re.match("^[a-z0-9][a-z0-9\.\_\-]+$", mvalue, flags=re.IGNORECASE) | |
208 | |
209 def trans_bool(self, mvalue): | |
210 if self.is_str(mvalue): | |
211 if re.match("^\s*(true|1|on|yes)\s*$", mvalue, re.IGNORECASE): | |
212 mvalue = True | |
213 elif re.match("^\s*(false|0|off|no)\s*$", mvalue, re.IGNORECASE): | |
214 mvalue = False | |
215 else: | |
216 return None | |
217 return mvalue | |
218 | |
219 def is_bool(self, mvalue): | |
220 mval = self.trans_bool(mvalue) | |
221 if not isinstance(mval, bool): | |
222 gcm_fatal("GCMSettings.is_bool(): Invalid boolean value '{0}', should be true|false|1|0|on|off|yes|no.".format(mvalue)) | |
223 else: | |
224 return True | |
225 | |
226 def trans_list(self, mvalue): | |
227 morig = mvalue | |
228 if self.is_str(mvalue): | |
229 mvalue = re.split("\s*,\s*", mvalue, flags=re.IGNORECASE) | |
230 if not isinstance(mvalue, list): | |
231 gcm_fatal("GCMSettings.trans_list(): Could not parse list '{0}'.".format(mvalue)) | |
232 elif not isinstance(mvalue, list): | |
233 gcm_fatal("GCMSettings.trans_list(): Invalid value '{0}'.".format(mvalue)) | |
234 return mvalue | |
235 | |
236 def is_list(self, mvalue): | |
237 return self.trans_list(mvalue) | |
238 | |
239 def is_email(self, mvalue): | |
240 if not self.is_string(mvalue): | |
241 return False | |
242 else: | |
243 return re.match("^.*?\s+<[a-z0-9]+[a-z0-9\.\+\-]*\@[a-z0-9]+[a-z0-9\.\-]+>\s*$|[a-z0-9]+[a-z0-9\.\+\-]*\@[a-z0-9]+[a-z0-9\.\-]+", mvalue, flags=re.IGNORECASE) | |
244 | |
245 def trans_email_list(self, mvalue): | |
246 if mvalue == None: | |
247 return mvalue | |
248 else: | |
249 return self.trans_list(mvalue.strip()) | |
250 | |
251 def is_email_list(self, mvalue): | |
252 mvalue = self.trans_email_list(mvalue) | |
253 if mvalue != None: | |
254 for email in mvalue: | |
255 if not self.is_email(email): | |
256 gcm_fatal("Invalid e-mail address '{0}' in list {1}.".format(email, ", ".join(mvalue))) | |
257 return True | |
258 | |
1 | 259 |
260 ### | |
261 ### Main program starts | |
262 ### | |
263 gcm_msgbuf = [] | |
264 signal.signal(signal.SIGINT, gcm_signal_handler) | |
265 | |
266 | |
267 ## Settings | |
268 cfg = GCMSettings() | |
269 | |
23 | 270 cfg.mdef("debug", True, cfg.is_bool, cfg.trans_bool, False) |
1 | 271 |
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272 cfg.mdef("email_ok", False, None, None, False) |
23 | 273 cfg.mdef("email", True, cfg.is_bool, cfg.trans_bool, False) |
274 cfg.mdef("email_to", True, cfg.is_email_list, cfg.trans_email_list, None) | |
275 cfg.mdef("email_sender", True, cfg.is_email, None, None) | |
49 | 276 cfg.mdef("email_subject", True, cfg.is_string, None, u"Google Calendar MultiMerge status") |
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277 |
49 | 278 cfg.mdef("source_regex", True, cfg.is_string, None, u"^R:\s*(.*?)\s*\(\s*(.+?)\s*\)\s*$") |
23 | 279 cfg.mdef("source_regmap", False, cfg.is_list, cfg.trans_list, [1, 2]) |
1 | 280 cfg.mdef("source_regmap_len", False, None, None, len(cfg.source_regmap)) |
281 | |
23 | 282 cfg.mdef("dest_name", True, cfg.is_string, None, u"Raahen kansainvälisyystoiminta") |
283 cfg.mdef("dest_id", True, cfg.is_string, None, None) | |
1 | 284 |
285 cfg.mdef("noauth_local_webserver", False, None, None, True) | |
286 #cfg.mdef("auth_host_name", False, None, None, "localhost") | |
287 #cfg.mdef("auth_host_port", False, None, None, [8080, 8090]) | |
23 | 288 cfg.mdef("logging_level", True, cfg.is_log_level, cfg.trans_log_level, "ERROR") |
1 | 289 |
290 # No need to touch these | |
291 cfg.mdef("app_name", False, None, None, "Google Calendar MultiMerge") | |
292 cfg.mdef("scope", False, None, None, "https://www.googleapis.com/auth/calendar") | |
293 #cfg.mdef("scope", False, None, None, "https://www.googleapis.com/auth/calendar.readonly") | |
23 | 294 cfg.mdef("secret_file", True, cfg.is_filename, None, "client_secret.json") |
295 cfg.mdef("credential_file", True, cfg.is_filename, None, "client_credentials.json") | |
1 | 296 |
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297 |
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298 ## Read, parse and validate configuration file |
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299 if len(sys.argv) > 1: |
54 | 300 gcm_debug(u"Reading configuration from '{0}'.".format(sys.argv[1])) |
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301 try: |
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302 cfgparser = ConfigParser.RawConfigParser() |
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303 cfgparser.readfp(codecs.open(sys.argv[1], "r", "UTF-8")) |
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304 except Exception as e: |
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305 gcm_fatal("Failed to read configuration file '{0}': {1}".format(sys.argv[1], str(e))) |
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306 |
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307 # Check that the required section exists |
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308 section = "gcm" |
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309 if not cfgparser.has_section(section): |
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310 gcm_fatal("Invalid configuration, missing '{0}' section.".format(section)) |
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311 |
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312 # Debug setting is a special case, we need to get it |
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313 # set before everything else, so do it here .. |
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314 if cfgparser.has_option(section, "debug"): |
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315 cfg.mset("debug", cfgparser.get(section, "debug")) |
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316 |
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317 # Parse the settings and validate |
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318 cfg.mread(cfgparser, section) |
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319 |
8 | 320 |
321 ## Validate settings | |
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322 if cfg.email: |
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323 if cfg.email_subject == None or len(cfg.email_subject) == 0: |
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324 gcm_fatal("E-mail enabled but email_subject not set.") |
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325 elif cfg.email_sender == None: |
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326 gcm_fatal("E-mail enabled but email_sender not set.") |
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327 elif cfg.email_to == None: |
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328 gcm_fatal("E-mail enabled but email_to not set.") |
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329 else: |
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330 cfg.mset("email_ok", True) |
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331 |
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332 |
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333 if len(cfg.source_regmap) != cfg.source_regmap_len: |
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334 gcm_fatal("Setting source_regmap list must be {0} items.".format(cfg.source_regmap_len)) |
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335 else: |
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336 # Force to integers |
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337 try: |
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338 cfg.source_regmap = map(lambda x: int(x), cfg.source_regmap) |
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339 except Exception as e: |
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340 gcm_fatal("Invalid source_regmap: {0}".format(str(e))) |
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341 |
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342 |
8 | 343 if not cfg.dest_name and not cfg.dest_id: |
344 gcm_fatal("Target calendar ID or name required, but not set.") | |
345 | |
346 | |
347 if cfg.dest_name: | |
348 cfg.mset("dest_name", cfg.mget("dest_name").strip()) | |
349 | |
350 | |
1 | 351 ## Initialize and authorize API connection |
352 credentials = gcm_get_credentials(cfg) | |
353 http = credentials.authorize(httplib2.Http()) | |
354 service = discovery.build("calendar", "v3", http=http) | |
355 | |
356 | |
357 ## Fetch complete calendar list | |
54 | 358 gcm_debug(u"Fetching available calendars ..") |
1 | 359 calendars = [] |
19 | 360 cal_token = None |
1 | 361 while True: |
362 # We want everything except deleted and hidden calendars | |
17 | 363 result = service.calendarList().list( |
1 | 364 showHidden=False, |
365 showDeleted=False, | |
19 | 366 pageToken=cal_token |
1 | 367 ).execute() |
368 | |
17 | 369 calendars.extend(result.get("items", [])) |
19 | 370 cal_token = result.get("nextPageToken") |
371 if not cal_token: | |
1 | 372 break |
373 | |
374 if len(calendars) == 0: | |
375 gcm_fatal("No calendars found?") | |
376 | |
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377 gcm_debug(u"{0} calendars total found.".format(len(calendars))) |
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378 |
1 | 379 |
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380 ## Filter desired SOURCE calendars based on specified regexp |
49 | 381 src_re = re.compile(cfg.source_regex, re.UNICODE) |
9
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382 src_calendars = [] |
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383 for calendar in calendars: |
51
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384 if u"summary" in calendar: |
50
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385 # Find destination calendar ID if not set |
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386 if not cfg.dest_id and cfg.dest_name == calendar["summary"].strip(): |
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387 cfg.mset("dest_id", calendar["id"]) |
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388 |
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389 # If summary or summaryOverride match the regexp, add calendar |
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390 mre = src_re.match(calendar["summary"]) |
52 | 391 if not mre and u"summaryOverride" in calendar: |
392 mre = src_re.match(calendar[u"summaryOverride"]) | |
393 | |
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394 if mre: |
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395 calendar["gcm_title"] = mre.group(cfg.source_regmap[0]) |
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396 calendar["gcm_id"] = mre.group(cfg.source_regmap[1]) |
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397 src_calendars.append(calendar) |
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398 |
50
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399 gcm_debug(u"{0} source calendars found.".format(len(src_calendars))) |
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400 |
50
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401 |
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402 ## Check if we have destination calendar ID |
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403 if not cfg.dest_id: |
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404 gcm_fatal(u"Could not find target/destination calendar ID for '"+ cfg.dest_name +"'.") |
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405 |
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406 |
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407 ## Now, we fetch and collect events |
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408 gcm_debug(u"Fetching calendar events .. ") |
19 | 409 src_events = [] |
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410 color_id = 0 |
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411 for calendar in src_calendars: |
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412 color_id = color_id + 1 |
54 | 413 gcm_debug(u"- "+calendar["id"]) |
17 | 414 result = service.events().list( |
11
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415 timeZone="EEST", |
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416 calendarId=calendar["id"], |
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417 singleEvents=True, |
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418 showDeleted=False, |
17 | 419 # orderBy="startTime", |
420 ).execute() | |
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421 |
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422 # Add events, if any, to main list |
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423 events = gcm_generate_ids(result.get("items", []), calendar["id"]) |
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424 if events: |
31
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425 for event in events: |
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426 event["colorId"] = color_id |
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diff
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427 event["summary"] = u"{0} [{1}]".format(event["summary"], calendar["gcm_id"]) |
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428 src_events.extend(events) |
11
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429 if cfg.debug: |
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430 gcm_dump_events(events) |
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431 |
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432 |
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433 ## Get current events |
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434 gcm_debug(u"Fetching current target calendar events {0}".format(cfg.dest_id)) |
17 | 435 result = service.events().list( |
13
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436 calendarId=cfg.dest_id, |
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437 singleEvents=True, |
32 | 438 showDeleted=True, |
439 ).execute() | |
13
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440 |
33
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diff
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441 dst_events = gcm_generate_ids(result.get("items", []), "") |
22 | 442 if dst_events: |
443 gcm_debug(u"Found {0} event(s).".format(len(dst_events))) | |
13
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444 else: |
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445 gcm_debug(u"No current events.") |
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446 |
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447 |
27 | 448 ## Start merging events .. |
54 | 449 gcm_debug(u"Re-merging events to target calendar ..") |
55 | 450 dst_ids = frozenset(map(lambda x: x["gcm_id"], dst_events)) |
451 src_ids = frozenset(map(lambda x: x["gcm_id"], src_events)) | |
27 | 452 |
453 for event in src_events: | |
454 # Does the event exist already in the target? | |
55 | 455 if event["gcm_id"] in dst_ids: |
34 | 456 ## Yes. Thus, we just update the event. |
55 | 457 #print "IS in dst_ids: "+ event["id"] +" : "+ event["gcm_id"] |
39
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458 # Check if event NEEDS updating .. aka compare data |
54 | 459 gcm_debug(u"Updating event {0}".format(event["gcm_id"])) |
53
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460 d_event = gcm_get_event_by_gcm_id(dst_events, event["gcm_id"]) |
55 | 461 if not d_event: |
462 gcm_fatal("ASDF") | |
463 if not gcm_compare_events(event, d_event): | |
39
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464 try: |
55 | 465 event.pop("sequence", None) |
39
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466 new_event = service.events().update(calendarId=cfg.dest_id, eventId=event["id"], body=event).execute() |
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467 except Exception as e: |
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468 gcm_fatal("Failed to update event:\n{0}\n\nERROR: {1}\n".format(event, str(e))) |
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469 else: |
54 | 470 gcm_debug(u"No need to update event {0}.".format(event["gcm_id"])) |
27 | 471 else: |
34 | 472 ## Event does not seem to exist. Insert new event. |
54 | 473 gcm_debug(u"Inserting new event {0}".format(event["gcm_id"])) |
34 | 474 event.pop("iCalUID", None) # Remove the iCalUID, having it conflicts with event ID |
475 event["id"] = event["gcm_id"] # Replace Google generated ID with our own | |
476 try: | |
477 new_event = service.events().insert(calendarId=cfg.dest_id, body=event).execute() | |
478 except Exception as e: | |
479 gcm_fatal("Failed to insert new event:\n{0}\n\nERROR: {1}\n".format(event, str(e))) | |
480 | |
481 ## Remove "stale" events | |
54 | 482 gcm_debug(u"Purging stale events ..") |
38
54405de302d0
Attempt to delete stale events. Still needs a check for already deleted
Matti Hamalainen <ccr@tnsp.org>
parents:
37
diff
changeset
|
483 for event in dst_events: |
55 | 484 if not event["gcm_id"] in src_ids and event["status"] != u"cancelled": |
485 gcm_debug(u"Deleting event {0}".format(event["gcm_id"])) | |
486 # try: | |
487 # service.events().delete(calendarId=cfg.dest_id, eventId=event["id"]).execute() | |
488 # except Exception as e: | |
489 # gcm_fatal("Failed to delete stale event:\n{0}\n\nERROR: {1}\n".format(event, str(e))) | |
38
54405de302d0
Attempt to delete stale events. Still needs a check for already deleted
Matti Hamalainen <ccr@tnsp.org>
parents:
37
diff
changeset
|
490 |
27 | 491 |
54 | 492 gcm_debug(u"Finished.") |