Mercurial > hg > gcmultimerge
annotate multimerge.py @ 43:a331209e24fc
Unicodify.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Tue, 05 Jul 2016 14:18:36 +0300 |
| parents | ac949d2b268a |
| children | e30f4647913d |
| rev | line source |
|---|---|
| 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 time |
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15 #import datetime |
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16 |
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17 import smtplib |
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18 from email.mime.text import MIMEText |
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19 |
| 1 | 20 import httplib2 |
| 21 import ConfigParser | |
| 20 | 22 |
| 1 | 23 import oauth2client |
| 24 from oauth2client import client | |
| 25 from oauth2client import tools | |
| 4 | 26 from oauth2client import file |
| 1 | 27 from googleapiclient import discovery |
| 28 | |
| 29 | |
| 30 ### | |
| 31 ### Misc. helper functions | |
| 32 ### | |
| 33 | |
| 34 ## Wrapper for print() that does not break when redirecting stdin/out | |
| 35 ## because of piped output not having a defined encoding. We default | |
| 36 ## to UTF-8 encoding in output here. | |
| 37 def gcm_print(smsg): | |
| 38 gcm_msgbuf.append(smsg.encode("UTF-8")) | |
| 39 if sys.stdout.encoding != None: | |
| 40 print(smsg.encode(sys.stdout.encoding)) | |
| 41 else: | |
| 42 print(smsg.encode("UTF-8")) | |
| 43 | |
| 44 | |
| 45 ## Fatal errors | |
| 46 def gcm_fatal(smsg): | |
| 47 gcm_print(u"ERROR: "+ smsg) | |
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48 if cfg.email_ok and cfg.email: |
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49 ## If e-mail is set, send e-mail |
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50 msg = MIMEText(("\n".join(gcm_msgbuf)).encode("UTF-8"), "plain") |
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51 msg.set_charset("UTF-8") |
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52 msg["Subject"] = cfg.email_subject |
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53 msg["From"] = cfg.email_sender |
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54 msg["To"] = ",".join(cfg.email_to) |
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55 try: |
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56 smtpH = smtplib.SMTP('localhost') |
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57 smtpH.sendmail(cfg.email_sender, cfg.email_to, msg.as_string()) |
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58 smtpH.quit() |
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59 except: |
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60 gcm_print("FATAL: Oh crap, e-mail sending failed.") |
| 1 | 61 sys.exit(1) |
| 62 | |
| 63 | |
| 64 ## Debug messages | |
| 65 def gcm_debug(smsg): | |
| 66 if cfg.debug: | |
| 67 gcm_print(u"DBG: "+ smsg) | |
| 68 else: | |
| 69 gcm_msgbuf.append(u"DBG: "+ smsg.encode("UTF-8")) | |
| 70 | |
| 71 | |
| 24 | 72 ## Handler for SIGINT signals |
| 1 | 73 def gcm_signal_handler(signal, frame): |
| 74 gcm_print("\nQuitting due to SIGINT / Ctrl+C!") | |
| 75 sys.exit(0) | |
| 76 | |
| 77 | |
| 24 | 78 ## Function for handling Google API credentials |
| 1 | 79 def gcm_get_credentials(mcfg): |
| 42 | 80 try: |
| 81 store = oauth2client.file.Storage(mcfg.credential_file) | |
| 82 except Exception as e: | |
| 83 gcm_fatal("Failed to read credential file:\n{0}\n\nERROR: {1}\n".format(mcfg.credential_file, str(e))) | |
| 84 | |
| 1 | 85 credentials = store.get() |
| 86 if not credentials or credentials.invalid: | |
| 42 | 87 try: |
| 88 flow = client.flow_from_clientsecrets(mcfg.secret_file, mcfg.scope) | |
| 89 except Exception as e: | |
| 90 gcm_fatal("Failed to fetch client secret:\n{0}\n\nERROR: {1}\n".format(mcfg.secret_file, str(e))) | |
| 91 | |
| 1 | 92 flow.user_agent = mcfg.app_name |
| 93 credentials = tools.run_flow(flow, store, mcfg) | |
| 94 if not credentials or credentials.invalid: | |
| 95 gcm_fatal("Failed to authenticate / invalid credentials.") | |
| 96 return credentials | |
| 97 | |
| 98 | |
| 99 def gcm_dump_events(events): | |
| 100 for event in events: | |
| 101 ev_start = event["start"].get("dateTime", event["start"].get("date")) | |
| 102 ev_end = event["end"].get("dateTime", event["end"].get("date")) | |
| 103 gcm_print(u"{0:25} - {1:25} : {2}".format(ev_start, ev_end, event["summary"])) | |
| 104 | |
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105 def gcm_generate_ids(events, calendar_id): |
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106 if not events: |
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107 return events |
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108 |
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109 for ev in events: |
| 28 | 110 ev["gcm_cal_id"] = calendar_id |
| 30 | 111 ev["gcm_id"] = re.sub("[^a-v0-9]", "0", calendar_id.lower()) + ev["id"] |
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112 |
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113 return events |
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114 |
| 1 | 115 |
| 24 | 116 ## |
| 117 ## Class for handling configuration / settings | |
| 118 ## | |
| 1 | 119 class GCMSettings(dict): |
| 120 def __init__(self): | |
| 121 self.m_data = {} | |
| 122 self.m_saveable = {} | |
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123 self.m_validate = {} |
| 1 | 124 self.m_translate = {} |
| 125 | |
| 126 def __getattr__(self, name): | |
| 127 if name in self.m_data: | |
| 128 return self.m_data[name] | |
| 129 else: | |
| 130 gcm_fatal("GCMSettings.__getattr__(): No such attribute '"+ name +"'.") | |
| 131 | |
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132 def mvalidate(self, name, value): |
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133 if name in self.m_validate and self.m_validate[name]: |
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134 if not self.m_validate[name](value): |
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135 gcm_fatal("GCMSettings.mvalidate(): Invalid value for attribute '{0}': {1}".format(name, value)) |
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136 |
| 1 | 137 def mtranslate(self, name, value): |
| 138 if name in self.m_translate and self.m_translate[name]: | |
| 139 return self.m_translate[name](value) | |
| 140 else: | |
| 141 return value | |
| 142 | |
| 143 def mdef(self, name, saveable, validate, translate, value): | |
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144 self.mvalidate(name, value) |
| 1 | 145 self.m_saveable[name] = saveable |
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146 self.m_validate[name] = validate |
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147 self.m_translate[name] = translate |
| 1 | 148 self.m_data[name] = self.mtranslate(name, value) |
| 149 | |
| 150 def mset(self, name, value): | |
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151 self.mvalidate(name, value) |
| 1 | 152 if name in self.m_data: |
| 153 self.m_data[name] = self.mtranslate(name, value) | |
| 154 else: | |
| 43 | 155 gcm_fatal(u"GCMSettings.mset(): No such attribute '"+ name +"'.") |
| 1 | 156 |
| 157 def mget(self, name): | |
| 158 if name in self.m_data: | |
| 159 return self.m_data[name] | |
| 160 else: | |
| 161 return None | |
| 162 | |
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163 def mread(self, cfgparser, sect): |
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164 for name in self.m_saveable: |
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165 if cfgparser.has_option(sect, name): |
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166 value = cfgparser.get(sect, name) |
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167 self.mset(name, value) |
| 43 | 168 gcm_debug(u"{0} -> '{1}' == {2}".format(name, value, self.mget(name))) |
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169 |
| 23 | 170 def is_str(self, mvalue): |
| 171 return isinstance(mvalue, basestring) | |
| 172 | |
| 173 def is_string(self, mvalue): | |
| 174 return mvalue == None or self.is_str(mvalue) | |
| 175 | |
| 176 def is_log_level(self, mvalue): | |
| 177 if not self.is_str(mvalue): | |
| 178 return False | |
| 179 else: | |
| 180 return mvalue.upper() in ["CRITICAL", "ERROR", "WARNING", "INFO", "DEBUG"] | |
| 181 | |
| 182 def trans_log_level(self, mvalue): | |
| 183 return mvalue.upper() | |
| 184 | |
| 185 def is_filename(self, mvalue): | |
| 186 if not self.is_str(mvalue): | |
| 187 return False | |
| 188 else: | |
| 189 return re.match("^[a-z0-9][a-z0-9\.\_\-]+$", mvalue, flags=re.IGNORECASE) | |
| 190 | |
| 191 def trans_bool(self, mvalue): | |
| 192 if self.is_str(mvalue): | |
| 193 if re.match("^\s*(true|1|on|yes)\s*$", mvalue, re.IGNORECASE): | |
| 194 mvalue = True | |
| 195 elif re.match("^\s*(false|0|off|no)\s*$", mvalue, re.IGNORECASE): | |
| 196 mvalue = False | |
| 197 else: | |
| 198 return None | |
| 199 return mvalue | |
| 200 | |
| 201 def is_bool(self, mvalue): | |
| 202 mval = self.trans_bool(mvalue) | |
| 203 if not isinstance(mval, bool): | |
| 204 gcm_fatal("GCMSettings.is_bool(): Invalid boolean value '{0}', should be true|false|1|0|on|off|yes|no.".format(mvalue)) | |
| 205 else: | |
| 206 return True | |
| 207 | |
| 208 def trans_list(self, mvalue): | |
| 209 morig = mvalue | |
| 210 if self.is_str(mvalue): | |
| 211 mvalue = re.split("\s*,\s*", mvalue, flags=re.IGNORECASE) | |
| 212 if not isinstance(mvalue, list): | |
| 213 gcm_fatal("GCMSettings.trans_list(): Could not parse list '{0}'.".format(mvalue)) | |
| 214 elif not isinstance(mvalue, list): | |
| 215 gcm_fatal("GCMSettings.trans_list(): Invalid value '{0}'.".format(mvalue)) | |
| 216 return mvalue | |
| 217 | |
| 218 def is_list(self, mvalue): | |
| 219 return self.trans_list(mvalue) | |
| 220 | |
| 221 def is_email(self, mvalue): | |
| 222 if not self.is_string(mvalue): | |
| 223 return False | |
| 224 else: | |
| 225 return re.match("^.*?\s+<[a-z0-9]+[a-z0-9\.\+\-]*\@[a-z0-9]+[a-z0-9\.\-]+>\s*$|[a-z0-9]+[a-z0-9\.\+\-]*\@[a-z0-9]+[a-z0-9\.\-]+", mvalue, flags=re.IGNORECASE) | |
| 226 | |
| 227 def trans_email_list(self, mvalue): | |
| 228 if mvalue == None: | |
| 229 return mvalue | |
| 230 else: | |
| 231 return self.trans_list(mvalue.strip()) | |
| 232 | |
| 233 def is_email_list(self, mvalue): | |
| 234 mvalue = self.trans_email_list(mvalue) | |
| 235 if mvalue != None: | |
| 236 for email in mvalue: | |
| 237 if not self.is_email(email): | |
| 238 gcm_fatal("Invalid e-mail address '{0}' in list {1}.".format(email, ", ".join(mvalue))) | |
| 239 return True | |
| 240 | |
| 1 | 241 |
| 242 ### | |
| 243 ### Main program starts | |
| 244 ### | |
| 245 gcm_msgbuf = [] | |
| 246 signal.signal(signal.SIGINT, gcm_signal_handler) | |
| 247 | |
| 248 | |
| 249 ## Settings | |
| 250 cfg = GCMSettings() | |
| 251 | |
| 23 | 252 cfg.mdef("debug", True, cfg.is_bool, cfg.trans_bool, False) |
| 1 | 253 |
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254 cfg.mdef("email_ok", False, None, None, False) |
| 23 | 255 cfg.mdef("email", True, cfg.is_bool, cfg.trans_bool, False) |
| 256 cfg.mdef("email_to", True, cfg.is_email_list, cfg.trans_email_list, None) | |
| 257 cfg.mdef("email_sender", True, cfg.is_email, None, None) | |
| 258 cfg.mdef("email_subject", True, cfg.is_string, None, "Google Calendar MultiMerge status") | |
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259 |
| 23 | 260 cfg.mdef("source_regex", True, cfg.is_string, None, "^R:\s*(.*?)\s*\(\s*(.+?)\s*\)\s*$") |
| 261 cfg.mdef("source_regmap", False, cfg.is_list, cfg.trans_list, [1, 2]) | |
| 1 | 262 cfg.mdef("source_regmap_len", False, None, None, len(cfg.source_regmap)) |
| 263 | |
| 23 | 264 cfg.mdef("dest_name", True, cfg.is_string, None, u"Raahen kansainvälisyystoiminta") |
| 265 cfg.mdef("dest_id", True, cfg.is_string, None, None) | |
| 1 | 266 |
| 267 cfg.mdef("noauth_local_webserver", False, None, None, True) | |
| 268 #cfg.mdef("auth_host_name", False, None, None, "localhost") | |
| 269 #cfg.mdef("auth_host_port", False, None, None, [8080, 8090]) | |
| 23 | 270 cfg.mdef("logging_level", True, cfg.is_log_level, cfg.trans_log_level, "ERROR") |
| 1 | 271 |
| 272 # No need to touch these | |
| 273 cfg.mdef("app_name", False, None, None, "Google Calendar MultiMerge") | |
| 274 cfg.mdef("scope", False, None, None, "https://www.googleapis.com/auth/calendar") | |
| 275 #cfg.mdef("scope", False, None, None, "https://www.googleapis.com/auth/calendar.readonly") | |
| 23 | 276 cfg.mdef("secret_file", True, cfg.is_filename, None, "client_secret.json") |
| 277 cfg.mdef("credential_file", True, cfg.is_filename, None, "client_credentials.json") | |
| 1 | 278 |
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279 |
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280 ## Read, parse and validate configuration file |
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281 if len(sys.argv) > 1: |
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282 gcm_debug("Reading configuration from '{0}'.".format(sys.argv[1])) |
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283 try: |
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284 cfgparser = ConfigParser.RawConfigParser() |
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285 cfgparser.read(sys.argv[1]) |
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286 except Exception as e: |
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287 gcm_fatal("Failed to read configuration file '{0}': {1}".format(sys.argv[1], str(e))) |
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288 |
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289 # Check that the required section exists |
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290 section = "gcm" |
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291 if not cfgparser.has_section(section): |
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292 gcm_fatal("Invalid configuration, missing '{0}' section.".format(section)) |
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293 |
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294 # Debug setting is a special case, we need to get it |
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295 # set before everything else, so do it here .. |
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296 if cfgparser.has_option(section, "debug"): |
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297 cfg.mset("debug", cfgparser.get(section, "debug")) |
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298 |
|
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299 # Parse the settings and validate |
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300 cfg.mread(cfgparser, section) |
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301 |
| 8 | 302 |
| 303 ## Validate settings | |
|
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304 if cfg.email: |
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305 if cfg.email_subject == None or len(cfg.email_subject) == 0: |
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306 gcm_fatal("E-mail enabled but email_subject not set.") |
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307 elif cfg.email_sender == None: |
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308 gcm_fatal("E-mail enabled but email_sender not set.") |
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309 elif cfg.email_to == None: |
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310 gcm_fatal("E-mail enabled but email_to not set.") |
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311 else: |
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312 cfg.mset("email_ok", True) |
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313 |
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314 |
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315 if len(cfg.source_regmap) != cfg.source_regmap_len: |
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316 gcm_fatal("Setting source_regmap list must be {0} items.".format(cfg.source_regmap_len)) |
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317 else: |
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318 # Force to integers |
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319 try: |
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320 cfg.source_regmap = map(lambda x: int(x), cfg.source_regmap) |
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321 except Exception as e: |
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322 gcm_fatal("Invalid source_regmap: {0}".format(str(e))) |
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323 |
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324 |
| 8 | 325 if not cfg.dest_name and not cfg.dest_id: |
| 326 gcm_fatal("Target calendar ID or name required, but not set.") | |
| 327 | |
| 328 | |
| 329 if cfg.dest_name: | |
| 330 cfg.mset("dest_name", cfg.mget("dest_name").strip()) | |
| 331 | |
| 332 | |
| 1 | 333 ## Initialize and authorize API connection |
| 334 credentials = gcm_get_credentials(cfg) | |
| 335 http = credentials.authorize(httplib2.Http()) | |
| 336 service = discovery.build("calendar", "v3", http=http) | |
| 337 | |
| 338 | |
| 339 ## Fetch complete calendar list | |
| 340 gcm_debug("Fetching available calendars ..") | |
| 341 calendars = [] | |
| 19 | 342 cal_token = None |
| 1 | 343 while True: |
| 344 # We want everything except deleted and hidden calendars | |
| 17 | 345 result = service.calendarList().list( |
| 1 | 346 showHidden=False, |
| 347 showDeleted=False, | |
| 19 | 348 pageToken=cal_token |
| 1 | 349 ).execute() |
| 350 | |
| 17 | 351 calendars.extend(result.get("items", [])) |
| 19 | 352 cal_token = result.get("nextPageToken") |
| 353 if not cal_token: | |
| 1 | 354 break |
| 355 | |
| 356 if len(calendars) == 0: | |
| 357 gcm_fatal("No calendars found?") | |
| 358 | |
| 359 | |
|
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360 ## Filter desired SOURCE calendars based on specified regexp |
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361 src_re = re.compile(cfg.source_regex) |
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362 src_calendars = [] |
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363 for calendar in calendars: |
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364 if "summary" in calendar: |
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365 if not cfg.dest_id and cfg.dest_name == calendar["summary"].strip(): |
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366 cfg.mset("dest_id", calendar["id"]) |
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367 |
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368 mre = src_re.match(calendar["summary"]) |
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369 if mre: |
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370 calendar["gcm_title"] = mre.group(cfg.source_regmap[0]) |
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371 calendar["gcm_id"] = mre.group(cfg.source_regmap[1]) |
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372 src_calendars.append(calendar) |
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373 |
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374 |
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375 ## Check if we have target ID |
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376 if not cfg.dest_id: |
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377 gcm_fatal(u"Could not find target/destination calendar ID for '"+ cfg.dest_name +"'.") |
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378 |
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379 |
|
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380 ## Now, we fetch and collect events |
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381 gcm_debug(u"Fetching calendar events .. ") |
| 19 | 382 src_events = [] |
|
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383 color_id = 0 |
|
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384 for calendar in src_calendars: |
|
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385 color_id = color_id + 1 |
|
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386 gcm_debug("- "+calendar["id"]) |
| 17 | 387 result = service.events().list( |
|
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388 timeZone="EEST", |
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389 calendarId=calendar["id"], |
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390 singleEvents=True, |
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391 showDeleted=False, |
| 17 | 392 # orderBy="startTime", |
| 393 ).execute() | |
|
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394 |
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395 # Add events, if any, to main list |
|
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396 events = gcm_generate_ids(result.get("items", []), calendar["id"]) |
|
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397 if events: |
|
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398 for event in events: |
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399 event["colorId"] = color_id |
|
35
be1e798cc60a
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diff
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400 event["summary"] = u"{0} [{1}]".format(event["summary"], calendar["gcm_id"]) |
|
21
f392d495c5b6
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401 src_events.extend(events) |
|
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402 if cfg.debug: |
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403 gcm_dump_events(events) |
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404 |
|
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|
405 |
|
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dd240a7ad913
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406 ## Get current events |
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407 gcm_debug(u"Fetching current target calendar events {0}".format(cfg.dest_id)) |
| 17 | 408 result = service.events().list( |
|
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409 calendarId=cfg.dest_id, |
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410 singleEvents=True, |
| 32 | 411 showDeleted=True, |
| 412 ).execute() | |
|
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413 |
|
33
d58a0a1f23fa
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diff
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414 dst_events = gcm_generate_ids(result.get("items", []), "") |
| 22 | 415 if dst_events: |
| 416 gcm_debug(u"Found {0} event(s).".format(len(dst_events))) | |
|
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417 else: |
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418 gcm_debug(u"No current events.") |
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419 |
|
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420 |
| 27 | 421 ## Start merging events .. |
| 422 gcm_debug("Re-merging events to target calendar ..") | |
| 34 | 423 dst_gcm_ids = frozenset(map(lambda x: x["gcm_id"], dst_events)) |
| 424 src_ids = frozenset(map(lambda x: x["id"], src_events)) | |
| 425 dst_ids = frozenset(map(lambda x: x["id"], dst_events)) | |
| 27 | 426 |
| 427 for event in src_events: | |
| 428 # Does the event exist already in the target? | |
| 429 if event["gcm_id"] in dst_gcm_ids: | |
| 34 | 430 ## Yes. Thus, we just update the event. |
| 41 | 431 #print "IS in dst_gcm_ids: "+ event["id"] +" : "+ event["gcm_id"] |
|
39
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432 # Check if event NEEDS updating .. aka compare data |
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433 #d_event = gcm_get_event_by_gcm_id(dst_events, event["gcm_id"]) |
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434 #if d_event and gcm_compare_events(event, d_event): |
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435 if True: |
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|
436 try: |
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437 new_event = service.events().update(calendarId=cfg.dest_id, eventId=event["id"], body=event).execute() |
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|
438 except Exception as e: |
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|
439 gcm_fatal("Failed to update event:\n{0}\n\nERROR: {1}\n".format(event, str(e))) |
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440 else: |
| 40 | 441 gcm_debug("No need to update event {0}.".format(event["gcm_id"])) |
| 27 | 442 else: |
| 34 | 443 ## Event does not seem to exist. Insert new event. |
| 444 event.pop("iCalUID", None) # Remove the iCalUID, having it conflicts with event ID | |
| 445 event["id"] = event["gcm_id"] # Replace Google generated ID with our own | |
| 446 try: | |
| 447 new_event = service.events().insert(calendarId=cfg.dest_id, body=event).execute() | |
| 448 except Exception as e: | |
| 449 gcm_fatal("Failed to insert new event:\n{0}\n\nERROR: {1}\n".format(event, str(e))) | |
| 450 | |
| 451 ## Remove "stale" events | |
|
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452 for event in dst_events: |
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453 if not event["id"] in src_ids: |
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454 try: |
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455 service.events().delete(calendarId=cfg.dest_id, eventId=event["id"]).execute() |
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456 except Exception as e: |
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457 gcm_fatal("Failed to delete stale event:\n{0}\n\nERROR: {1}\n".format(event, str(e))) |
|
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458 |
| 27 | 459 |
| 460 gcm_debug("Finished.") |