from __future__ import absolute_import from django.core.management.base import BaseCommand from django.utils.timezone import utc, now from django.contrib.sites.models import Site from zephyr.models import Message, UserProfile, Stream, Recipient, Client, \ Subscription, Huddle, get_huddle, Realm, UserMessage, \ get_huddle_hash, clear_database, get_client, get_user_profile_by_id from zephyr.lib.actions import do_send_message, set_default_streams, \ do_activate_user, do_change_password from zephyr.lib.parallel import run_parallel from django.db import transaction, connection from django.conf import settings from zephyr.lib.bulk_create import bulk_create_realms, \ bulk_create_streams, bulk_create_users, bulk_create_huddles, \ bulk_create_clients from zephyr.lib.timestamp import timestamp_to_datetime from zephyr.models import MAX_MESSAGE_LENGTH import ujson import datetime import random import glob import sys import os from os import path from optparse import make_option settings.TORNADO_SERVER = None def create_users(realms, name_list): user_set = set() for full_name, email in name_list: (short_name, domain) = email.split("@") user_set.add((email, full_name, short_name, True)) bulk_create_users(realms, user_set) def create_streams(realms, realm, stream_list): stream_set = set() for stream_name in stream_list: stream_set.add((realm.domain, stream_name)) bulk_create_streams(realms, stream_set) class Command(BaseCommand): help = "Populate a test database" option_list = BaseCommand.option_list + ( make_option('-n', '--num-messages', dest='num_messages', type='int', default=600, help='The number of messages to create.'), make_option('--extra-users', dest='extra_users', type='int', default=0, help='The number of extra users to create'), make_option('--huddles', dest='num_huddles', type='int', default=3, help='The number of huddles to create.'), make_option('--personals', dest='num_personals', type='int', default=6, help='The number of personal pairs to create.'), make_option('--threads', dest='threads', type='int', default=10, help='The number of threads to use.'), make_option('--percent-huddles', dest='percent_huddles', type='float', default=15, help='The percent of messages to be huddles.'), make_option('--percent-personals', dest='percent_personals', type='float', default=15, help='The percent of messages to be personals.'), make_option('--stickyness', dest='stickyness', type='float', default=20, help='The percent of messages to repeat recent folks.'), make_option('--nodelete', action="store_false", default=True, dest='delete', help='Whether to delete all the existing messages.'), make_option('--test-suite', default=False, action="store_true", help='Whether to delete all the existing messages.'), make_option('--replay-old-messages', action="store_true", default=False, dest='replay_old_messages', help='Whether to replace the log of old messages.'), ) def handle(self, **options): if options["percent_huddles"] + options["percent_personals"] > 100: self.stderr.write("Error! More than 100% of messages allocated.\n") return if options["delete"]: # Start by clearing all the data in our database clear_database() # Create our two default realms humbug_realm = Realm.objects.create(domain="humbughq.com") Realm.objects.create(domain="mit.edu") realms = {} for realm in Realm.objects.all(): realms[realm.domain] = realm # Create test Users (UserProfiles are automatically created, # as are subscriptions to the ability to receive personals). names = [("Othello, the Moor of Venice", "othello@humbughq.com"), ("Iago", "iago@humbughq.com"), ("Prospero from The Tempest", "prospero@humbughq.com"), ("Cordelia Lear", "cordelia@humbughq.com"), ("King Hamlet", "hamlet@humbughq.com")] for i in xrange(options["extra_users"]): names.append(('Extra User %d' % (i,), 'extrauser%d@humbughq.com' % (i,))) create_users(realms, names) # Create public streams. stream_list = ["Verona", "Denmark", "Scotland", "Venice", "Rome"] create_streams(realms, humbug_realm, stream_list) recipient_streams = [recipient.type_id for recipient in Recipient.objects.filter(type=Recipient.STREAM)] # Create subscriptions to streams subscriptions_to_add = [] profiles = UserProfile.objects.select_related().all() for i, profile in enumerate(profiles): # Subscribe to some streams. for type_id in recipient_streams[:int(len(recipient_streams) * float(i)/len(profiles)) + 1]: r = Recipient.objects.get(type=Recipient.STREAM, type_id=type_id) s = Subscription(recipient=r, user_profile=profile) subscriptions_to_add.append(s) Subscription.objects.bulk_create(subscriptions_to_add) else: humbug_realm = Realm.objects.get(domain="humbughq.com") recipient_streams = [klass.type_id for klass in Recipient.objects.filter(type=Recipient.STREAM)] # Extract a list of all users user_profiles = [user_profile.id for user_profile in UserProfile.objects.all()] # Create several initial huddles for i in xrange(options["num_huddles"]): get_huddle(random.sample(user_profiles, random.randint(3, 4))) # Create several initial pairs for personals personals_pairs = [random.sample(user_profiles, 2) for i in xrange(options["num_personals"])] threads = options["threads"] jobs = [] for i in xrange(threads): count = options["num_messages"] / threads if i < options["num_messages"] % threads: count += 1 jobs.append((count, personals_pairs, options, self.stdout.write)) for status, job in run_parallel(send_messages, jobs, threads=threads): pass # Get a new database connection, after our parallel jobs # closed the original one connection.close() if options["delete"]: # Create the "website" and "API" clients; if we don't, the # default values in zephyr/decorators.py will not work # with the Django test suite. get_client("website") get_client("API") # Create internal users; first the ones who are referenced # directly by the test suite; the MIT ones are needed to # test the Zephyr mirroring codepaths. testsuite_mit_users = [ ("Fred Sipb (MIT)", "sipbtest@mit.edu"), ("Athena Consulting Exchange User (MIT)", "starnine@mit.edu"), ("Esp Classroom (MIT)", "espuser@mit.edu"), ] create_users(realms, testsuite_mit_users) # These bots are directly referenced from code and thus # are needed for the test suite. hardcoded_humbug_users_nosubs = [ ("Humbug New User Bot", "humbug+signups@humbughq.com"), ("Humbug Error Bot", "humbug+errors@humbughq.com"), ("Humbug Notification Bot", "humbug+notifications@humbughq.com"), ("Humbug Tutorial Bot", "humbug+tutorial@humbughq.com"), ] create_users(realms, hardcoded_humbug_users_nosubs) if not options["test_suite"]: # To keep the messages.json fixtures file for the test # suite fast, don't add these users and subscriptions # when running populate_db for the test suite internal_mit_users = [] create_users(realms, internal_mit_users) create_users(realms, settings.INTERNAL_HUMBUG_USERS) humbug_stream_list = ["devel", "all", "humbug", "design", "support", "social", "test", "errors"] create_streams(realms, humbug_realm, humbug_stream_list) # Now subscribe everyone to these streams subscriptions_to_add = [] profiles = UserProfile.objects.select_related().filter(realm=humbug_realm) for cls in humbug_stream_list: stream = Stream.objects.get(name=cls, realm=humbug_realm) recipient = Recipient.objects.get(type=Recipient.STREAM, type_id=stream.id) for profile in profiles: # Subscribe to some streams. s = Subscription(recipient=recipient, user_profile=profile) subscriptions_to_add.append(s) Subscription.objects.bulk_create(subscriptions_to_add) # These bots are not needed by the test suite internal_humbug_users_nosubs = [ ("Humbug Commit Bot", "humbug+commits@humbughq.com"), ("Humbug Trac Bot", "humbug+trac@humbughq.com"), ("Humbug Nagios Bot", "humbug+nagios@humbughq.com"), ("Humbug Feedback Bot", "feedback@humbughq.com"), ] create_users(realms, internal_humbug_users_nosubs) # Mark all messages as read with transaction.commit_on_success(): UserMessage.objects.all().update(flags=UserMessage.flags.read) self.stdout.write("Successfully populated test database.\n") if options["replay_old_messages"]: restore_saved_messages() connection.close() recipient_hash = {} def get_recipient_by_id(rid): if rid in recipient_hash: return recipient_hash[rid] return Recipient.objects.get(id=rid) def restore_saved_messages(): old_messages = [] duplicate_suppression_hash = {} stream_dict = {} user_set = set() email_set = set([u.email for u in UserProfile.objects.all()]) realm_set = set() # Initial client_set is nonempty temporarily because we don't have # clients in logs at all right now -- later we can start with nothing. client_set = set(["populate_db", "website", "zephyr_mirror"]) huddle_user_set = set() # First, determine all the objects our messages will need. print datetime.datetime.now(), "Creating realms/streams/etc..." def process_line(line): old_message_json = line.strip() # Due to populate_db's shakespeare mode, we have a lot of # duplicate messages in our log that only differ in their # logged ID numbers (same timestamp, content, etc.). With # sqlite, bulk creating those messages won't work properly: in # particular, the first 100 messages will actually only result # in 20 rows ending up in the target table, which screws up # the below accounting where for handling changing # subscriptions, we assume that the Nth row populate_db # created goes with the Nth non-subscription row of the input # So suppress the duplicates when using sqlite. if "sqlite" in settings.DATABASES["default"]["ENGINE"]: tmp_message = ujson.loads(old_message_json) tmp_message['id'] = '1' duplicate_suppression_key = ujson.dumps(tmp_message) if duplicate_suppression_key in duplicate_suppression_hash: return duplicate_suppression_hash[duplicate_suppression_key] = True old_message = ujson.loads(old_message_json) message_type = old_message["type"] # Lower case emails and domains; it will screw up # deduplication if we don't def fix_email(email): return email.strip().lower() if message_type in ["stream", "huddle", "personal"]: old_message["sender_email"] = fix_email(old_message["sender_email"]) # Fix the length on too-long messages before we start processing them if len(old_message["content"]) > MAX_MESSAGE_LENGTH: old_message["content"] = "[ This message was deleted because it was too long ]" if message_type in ["subscription_added", "subscription_removed"]: old_message["domain"] = old_message["domain"].lower() old_message["user"] = fix_email(old_message["user"]) elif message_type == "subscription_property": old_message["user"] = fix_email(old_message["user"]) elif message_type == "user_email_changed": old_message["old_email"] = fix_email(old_message["old_email"]) old_message["new_email"] = fix_email(old_message["new_email"]) elif message_type.startswith("user_"): old_message["user"] = fix_email(old_message["user"]) elif message_type.startswith("enable_"): old_message["user"] = fix_email(old_message["user"]) if message_type == 'personal': old_message["recipient"][0]["email"] = fix_email(old_message["recipient"][0]["email"]) elif message_type == "huddle": for i in xrange(len(old_message["recipient"])): old_message["recipient"][i]["email"] = fix_email(old_message["recipient"][i]["email"]) old_messages.append(old_message) if message_type in ["subscription_added", "subscription_removed"]: stream_name = old_message["name"].strip() canon_stream_name = stream_name.lower() if canon_stream_name not in stream_dict: stream_dict[(old_message["domain"], canon_stream_name)] = \ (old_message["domain"], stream_name) elif message_type == "user_created": user_set.add((old_message["user"], old_message["full_name"], old_message["short_name"], False)) elif message_type == "realm_created": realm_set.add(old_message["domain"]) if message_type not in ["stream", "huddle", "personal"]: return sender_email = old_message["sender_email"] domain = sender_email.split('@')[1] realm_set.add(domain) if old_message["sender_email"] not in email_set: user_set.add((old_message["sender_email"], old_message["sender_full_name"], old_message["sender_short_name"], False)) if 'sending_client' in old_message: client_set.add(old_message['sending_client']) if message_type == 'stream': stream_name = old_message["recipient"].strip() canon_stream_name = stream_name.lower() if canon_stream_name not in stream_dict: stream_dict[(domain, canon_stream_name)] = (domain, stream_name) elif message_type == 'personal': u = old_message["recipient"][0] if u["email"] not in email_set: user_set.add((u["email"], u["full_name"], u["short_name"], False)) email_set.add(u["email"]) elif message_type == 'huddle': for u in old_message["recipient"]: user_set.add((u["email"], u["full_name"], u["short_name"], False)) if u["email"] not in email_set: user_set.add((u["email"], u["full_name"], u["short_name"], False)) email_set.add(u["email"]) huddle_user_set.add(tuple(sorted(set(u["email"] for u in old_message["recipient"])))) else: raise ValueError('Bad message type') event_glob = path.join(settings.EVENT_LOG_DIR, 'events.*') for filename in sorted(glob.glob(event_glob)): with file(filename, "r") as message_log: for line in message_log.readlines(): process_line(line) stream_recipients = {} user_recipients = {} huddle_recipients = {} # Then, create the objects our messages need. print datetime.datetime.now(), "Creating realms..." bulk_create_realms(realm_set) realms = {} for realm in Realm.objects.all(): realms[realm.domain] = realm print datetime.datetime.now(), "Creating clients..." bulk_create_clients(client_set) clients = {} for client in Client.objects.all(): clients[client.name] = client print datetime.datetime.now(), "Creating streams..." bulk_create_streams(realms, stream_dict.values()) streams = {} for stream in Stream.objects.all(): streams[stream.id] = stream for recipient in Recipient.objects.filter(type=Recipient.STREAM): stream_recipients[(streams[recipient.type_id].realm_id, streams[recipient.type_id].name.lower())] = recipient print datetime.datetime.now(), "Creating users..." bulk_create_users(realms, user_set) users = {} users_by_id = {} for user_profile in UserProfile.objects.select_related().all(): users[user_profile.email] = user_profile users_by_id[user_profile.id] = user_profile for recipient in Recipient.objects.filter(type=Recipient.PERSONAL): user_recipients[users_by_id[recipient.type_id].email] = recipient print datetime.datetime.now(), "Creating huddles..." bulk_create_huddles(users, huddle_user_set) huddles_by_id = {} for huddle in Huddle.objects.all(): huddles_by_id[huddle.id] = huddle for recipient in Recipient.objects.filter(type=Recipient.HUDDLE): huddle_recipients[huddles_by_id[recipient.type_id].huddle_hash] = recipient # TODO: Add a special entry type in the log that is a subscription # change and import those as we go to make subscription changes # take effect! print datetime.datetime.now(), "Importing subscriptions..." subscribers = {} for s in Subscription.objects.select_related().all(): if s.active: subscribers.setdefault(s.recipient.id, set()).add(s.user_profile.id) # Then create all the messages, without talking to the DB! print datetime.datetime.now(), "Importing messages, part 1..." first_message_id = None if Message.objects.exists(): first_message_id = Message.objects.all().order_by("-id")[0].id + 1 messages_to_create = [] for idx, old_message in enumerate(old_messages): message_type = old_message["type"] if message_type not in ["stream", "huddle", "personal"]: continue message = Message() sender_email = old_message["sender_email"] domain = sender_email.split('@')[1] realm = realms[domain] message.sender = users[sender_email] type_hash = {"stream": Recipient.STREAM, "huddle": Recipient.HUDDLE, "personal": Recipient.PERSONAL} if 'sending_client' in old_message: message.sending_client = clients[old_message['sending_client']] elif sender_email in ["othello@humbughq.com", "iago@humbughq.com", "prospero@humbughq.com", "cordelia@humbughq.com", "hamlet@humbughq.com"]: message.sending_client = clients['populate_db'] elif realm.domain == "humbughq.com": message.sending_client = clients["website"] elif realm.domain == "mit.edu": message.sending_client = clients['zephyr_mirror'] else: message.sending_client = clients['populate_db'] message.type = type_hash[message_type] message.content = old_message["content"] message.subject = old_message["subject"] message.pub_date = timestamp_to_datetime(old_message["timestamp"]) if message.type == Recipient.PERSONAL: message.recipient = user_recipients[old_message["recipient"][0]["email"]] elif message.type == Recipient.STREAM: message.recipient = stream_recipients[(realm.id, old_message["recipient"].lower())] elif message.type == Recipient.HUDDLE: huddle_hash = get_huddle_hash([users[u["email"]].id for u in old_message["recipient"]]) message.recipient = huddle_recipients[huddle_hash] else: raise ValueError('Bad message type') messages_to_create.append(message) print datetime.datetime.now(), "Importing messages, part 2..." Message.objects.bulk_create(messages_to_create) messages_to_create = [] # Finally, create all the UserMessage objects print datetime.datetime.now(), "Importing usermessages, part 1..." personal_recipients = {} for r in Recipient.objects.filter(type = Recipient.PERSONAL): personal_recipients[r.id] = True all_messages = Message.objects.all() user_messages_to_create = [] messages_by_id = {} for message in all_messages: messages_by_id[message.id] = message if first_message_id is None: first_message_id = min(messages_by_id.keys()) tot_user_messages = 0 pending_subs = {} current_message_id = first_message_id pending_colors = {} for old_message in old_messages: message_type = old_message["type"] if message_type == 'subscription_added': stream_key = (realms[old_message["domain"]].id, old_message["name"].strip().lower()) subscribers.setdefault(stream_recipients[stream_key].id, set()).add(users[old_message["user"]].id) pending_subs[(stream_recipients[stream_key].id, users[old_message["user"]].id)] = True continue elif message_type == "subscription_removed": stream_key = (realms[old_message["domain"]].id, old_message["name"].strip().lower()) user_id = users[old_message["user"]].id subscribers.setdefault(stream_recipients[stream_key].id, set()) try: subscribers[stream_recipients[stream_key].id].remove(user_id) except KeyError: print "Error unsubscribing %s from %s: not subscribed" % ( old_message["user"], old_message["name"]) pending_subs[(stream_recipients[stream_key].id, users[old_message["user"]].id)] = False continue elif message_type == "user_activated" or message_type == "user_created": # These are rare, so just handle them the slow way user_profile = users[old_message["user"]] join_date = timestamp_to_datetime(old_message['timestamp']) do_activate_user(user_profile, log=False, join_date=join_date) # Update the cache of users to show this user as activated users_by_id[user_profile.id] = user_profile users[old_message["user"]] = user_profile continue elif message_type == "user_change_password": # Just handle these the slow way user_profile = users[old_message["user"]] do_change_password(user_profile, old_message["pwhash"], log=False, hashed_password=True) continue elif message_type == "user_change_full_name": # Just handle these the slow way user_profile = users[old_message["user"]] user_profile.full_name = old_message["full_name"] user_profile.save() continue elif message_type == "enable_desktop_notifications_changed": # Just handle these the slow way user_profile = users[old_message["user"]] user_profile.enable_desktop_notifications = (old_message["enable_desktop_notifications"] != "false") user_profile.save() continue elif message_type == "enable_sounds_changed": user_profile = users[old_message["user"]] user_profile.enable_sounds = (old_message["enable_sounds"] != "false") elif message_type == "enable_offline_email_notifications_changed": user_profile = users[old_message["user"]] user_profile.enable_offline_email_notifications = (old_message["enable_offline_email_notifications"] != "false") user_profile.save() continue elif message_type == "default_streams": set_default_streams(Realm.objects.get(domain=old_message["domain"]), old_message["streams"]) continue elif message_type == "subscription_property": property_name = old_message.get("property") if property_name == "stream_color" or property_name == "color": color = old_message.get("color", old_message.get("value")) pending_colors[(old_message["user"], old_message["stream_name"].lower())] = color elif property_name in ["in_home_view", "notifications"]: # TODO: Handle this continue else: raise RuntimeError("Unknown property %s" % (property_name,)) continue elif message_type == "realm_created": # No action required continue elif message_type in ["user_email_changed", "update_onboarding", "update_message"]: # TODO: Handle these continue if message_type not in ["stream", "huddle", "personal"]: raise RuntimeError("Unexpected message type %s" % (message_type,)) message = messages_by_id[current_message_id] current_message_id += 1 if message.recipient_id not in subscribers: # Nobody received this message -- probably due to our # subscriptions being out-of-date. continue recipient_user_ids = set() for user_profile_id in subscribers[message.recipient_id]: recipient_user_ids.add(user_profile_id) if message.recipient_id in personal_recipients: # Include the sender in huddle recipients recipient_user_ids.add(message.sender_id) for user_profile_id in recipient_user_ids: if users_by_id[user_profile_id].is_active: um = UserMessage(user_profile_id=user_profile_id, message=message) user_messages_to_create.append(um) if len(user_messages_to_create) > 100000: tot_user_messages += len(user_messages_to_create) UserMessage.objects.bulk_create(user_messages_to_create) user_messages_to_create = [] print datetime.datetime.now(), "Importing usermessages, part 2..." tot_user_messages += len(user_messages_to_create) UserMessage.objects.bulk_create(user_messages_to_create) print datetime.datetime.now(), "Finalizing subscriptions..." current_subs = {} current_subs_obj = {} for s in Subscription.objects.select_related().all(): current_subs[(s.recipient_id, s.user_profile_id)] = s.active current_subs_obj[(s.recipient_id, s.user_profile_id)] = s subscriptions_to_add = [] subscriptions_to_change = [] for pending_sub in pending_subs.keys(): (recipient_id, user_profile_id) = pending_sub current_state = current_subs.get(pending_sub) if pending_subs[pending_sub] == current_state: # Already correct in the database continue elif current_state is not None: subscriptions_to_change.append((pending_sub, pending_subs[pending_sub])) continue s = Subscription(recipient_id=recipient_id, user_profile_id=user_profile_id, active=pending_subs[pending_sub]) subscriptions_to_add.append(s) Subscription.objects.bulk_create(subscriptions_to_add) with transaction.commit_on_success(): for (sub, active) in subscriptions_to_change: current_subs_obj[sub].active = active current_subs_obj[sub].save() subs = {} for sub in Subscription.objects.all(): subs[(sub.user_profile_id, sub.recipient_id)] = sub # TODO: do restore of subscription colors -- we're currently not # logging changes so there's little point in having the code :( print datetime.datetime.now(), "Finished importing %s messages (%s usermessages)" % \ (len(all_messages), tot_user_messages) site = Site.objects.get_current() site.domain = 'humbughq.com' site.save() print datetime.datetime.now(), "Filling in user pointers..." # Set restored pointers to the very latest messages with transaction.commit_on_success(): for user_profile in UserProfile.objects.all(): try: top = UserMessage.objects.filter( user_profile_id=user_profile.id).order_by("-message")[0] user_profile.pointer = top.message_id except IndexError: user_profile.pointer = -1 user_profile.save() print datetime.datetime.now(), "Done replaying old messages" # Create some test messages, including: # - multiple streams # - multiple subjects per stream # - multiple huddles # - multiple personals converastions # - multiple messages per subject # - both single and multi-line content def send_messages(data): (tot_messages, personals_pairs, options, output) = data random.seed(os.getpid()) # Close the database connection, so that we get a new one that # isn't shared with the other threads connection.close() texts = file("zephyr/management/commands/test_messages.txt", "r").readlines() offset = random.randint(0, len(texts)) recipient_streams = [klass.id for klass in Recipient.objects.filter(type=Recipient.STREAM)] recipient_huddles = [h.id for h in Recipient.objects.filter(type=Recipient.HUDDLE)] huddle_members = {} for h in recipient_huddles: huddle_members[h] = [s.user_profile.id for s in Subscription.objects.filter(recipient_id=h)] num_messages = 0 random_max = 1000000 recipients = {} while num_messages < tot_messages: with transaction.commit_on_success(): saved_data = '' message = Message() message.sending_client = get_client('populate_db') length = random.randint(1, 5) lines = (t.strip() for t in texts[offset: offset + length]) message.content = '\n'.join(lines) offset += length offset = offset % len(texts) randkey = random.randint(1, random_max) if (num_messages > 0 and random.randint(1, random_max) * 100. / random_max < options["stickyness"]): # Use an old recipient message_type, recipient_id, saved_data = recipients[num_messages - 1] if message_type == Recipient.PERSONAL: personals_pair = saved_data random.shuffle(personals_pair) elif message_type == Recipient.STREAM: message.subject = saved_data message.recipient = get_recipient_by_id(recipient_id) elif message_type == Recipient.HUDDLE: message.recipient = get_recipient_by_id(recipient_id) elif (randkey <= random_max * options["percent_huddles"] / 100.): message_type = Recipient.HUDDLE message.recipient = get_recipient_by_id(random.choice(recipient_huddles)) elif (randkey <= random_max * (options["percent_huddles"] + options["percent_personals"]) / 100.): message_type = Recipient.PERSONAL personals_pair = random.choice(personals_pairs) random.shuffle(personals_pair) elif (randkey <= random_max * 1.0): message_type = Recipient.STREAM message.recipient = get_recipient_by_id(random.choice(recipient_streams)) if message_type == Recipient.HUDDLE: sender_id = random.choice(huddle_members[message.recipient.id]) message.sender = get_user_profile_by_id(sender_id) elif message_type == Recipient.PERSONAL: message.recipient = Recipient.objects.get(type=Recipient.PERSONAL, type_id=personals_pair[0]) message.sender = get_user_profile_by_id(personals_pair[1]) saved_data = personals_pair elif message_type == Recipient.STREAM: stream = Stream.objects.get(id=message.recipient.type_id) # Pick a random subscriber to the stream message.sender = random.choice(Subscription.objects.filter( recipient=message.recipient)).user_profile message.subject = stream.name + str(random.randint(1, 3)) saved_data = message.subject message.pub_date = now() do_send_message(message) recipients[num_messages] = [message_type, message.recipient.id, saved_data] num_messages += 1 connection.close() return tot_messages