St dh event log

microsetta_private_api/db/patches/0065.sql

@@ -0,0 +1,17 @@
+CREATE TABLE ag.event_log(
+    id uuid PRIMARY KEY NOT NULL,
+    event_type varchar(100) NOT NULL,
+    event_subtype varchar(100) NOT NULL,
+    event_time timestamptz default current_timestamp NOT NULL,
+    event_state jsonb);
+
+-- Full event log sorted by time
+CREATE INDEX idx_event_log_event_time ON ag.event_log (event_time);
+-- Event log filtered by type sorted by time
+CREATE INDEX idx_event_log_event_type_event_time ON ag.event_log (event_type, event_time);
+-- Event log filtered by type and subtype sorted by time
+CREATE INDEX idx_event_log_event_type_event_subtype_event_time ON ag.event_log (event_type, event_subtype, event_time);
+-- Event log filtered by user email sorted by time
+CREATE INDEX idx_events_state_email_time ON ag.event_log ((event_state->>'email'), event_time);
+-- Event log filtered by user account id sorted by time
+CREATE INDEX idx_events_state_account_id_time ON ag.event_log ((event_state->>'account_id'), event_time);

microsetta_private_api/model/log_event.py

@@ -0,0 +1,51 @@
+import datetime
+import uuid
+
+from microsetta_private_api.model.model_base import ModelBase
+from enum import Enum, unique
+
+
+# NOTE: The string values of these enums are persisted to the database
+#  therefore. They MUST NOT BE CHANGED.
+@unique
+class EventType(Enum):
+    # The event type indicating an email was sent to an end user
+    EMAIL = "email"
+
+
+@unique
+class EventSubtype(Enum):
+    # Email event subtypes refer to the various email templates we can send out
+
+    # indicate a sample was received, and is good, but is being banked
+    EMAIL_SAMPLE_RECEIVED_BANKED = "sample_received_banked"
+    # indicate a sample was received, is good, and is being plated
+    EMAIL_SAMPLE_RECEIVED_PLATED = "sample_received_plated"
+    # indicate a previously banked sample is now being plated
+    EMAIL_BANKED_SAMPLE_NOW_PLATED = "banked_sample_plated"
+    # indicate if there is a problem with a sample
+    # (messaging should be tailored to the problem)
+    EMAIL_SAMPLE_RECEIVED_WITH_PROBLEMS = "sample_received_with_problems"
+
+
+class LogEvent(ModelBase):
+    def __init__(self,
+                 event_id: uuid.UUID,
+                 event_type: EventType,
+                 event_subtype: EventSubtype,
+                 event_time: datetime,
+                 event_state: dict):
+        self.event_id = event_id
+        self.event_type = event_type
+        self.event_subtype = event_subtype
+        self.event_time = event_time
+        self.event_state = event_state
+
+    def to_api(self):
+        return {
+            "event_id": str(self.event_id),
+            "event_type": self.event_type.value,
+            "event_subtype": self.event_subtype.value,
+            "event_time": self.event_time,
+            "event_state": self.event_state
+        }

microsetta_private_api/repo/event_log_repo.py

@@ -0,0 +1,121 @@
+from uuid import UUID
+
+from psycopg2._json import Json
+
+from microsetta_private_api.model.log_event import LogEvent, EventType, \
+    EventSubtype
+from microsetta_private_api.repo.base_repo import BaseRepo
+
+
+_read_cols = "id, event_type, event_subtype, event_time, event_state"
+
+
+def _event_to_row(event: LogEvent):
+    return {
+        "id": str(event.event_id),
+        "event_type": event.event_type.value,
+        "event_subtype": event.event_subtype.value,
+        # event_time is set by db upon creation, need not be passed in.
+        "event_state": Json(event.event_state),
+    }
+
+
+def _row_to_event(row):
+    return LogEvent(UUID(row['id']),
+                    EventType(row['event_type']),
+                    EventSubtype(row['event_subtype']),
+                    row['event_time'],
+                    row['event_state'])
+
+
+class EventLogRepo(BaseRepo):
+    def __init__(self, transaction):
+        super().__init__(transaction)
+
+    def add_event(self, event: LogEvent):
+        with self._transaction.cursor() as cur:
+            cur.execute("INSERT INTO event_log("
+                        "id, "
+                        "event_type, "
+                        "event_subtype, "
+                        "event_state"
+                        ") VALUES ("
+                        "%(id)s, "
+                        "%(event_type)s, "
+                        "%(event_subtype)s, "
+                        "%(event_state)s"
+                        ")",
+                        _event_to_row(event))
+            return cur.rowcount == 1
+
+    def get_events(self):
+        with self._transaction.dict_cursor() as cur:
+            cur.execute("SELECT " + _read_cols + " FROM "
+                        "event_log "
+                        "ORDER BY "
+                        "event_time DESC")
+            return [_row_to_event(row) for row in cur.fetchall()]
+
+    def get_events_by_type(self, event_type: EventType):
+        with self._transaction.dict_cursor() as cur:
+            cur.execute("SELECT " + _read_cols + " FROM "
+                        "event_log "
+                        "WHERE "
+                        "event_type = %s "
+                        "ORDER BY "
+                        "event_time DESC",
+                        (event_type.value,))
+            return [_row_to_event(row) for row in cur.fetchall()]
+
+    def get_events_by_subtype(self,
+                              event_type: EventType,
+                              event_subtype: EventSubtype):
+        with self._transaction.dict_cursor() as cur:
+            cur.execute("SELECT " + _read_cols + " FROM "
+                        "event_log "
+                        "WHERE "
+                        "event_type = %s AND "
+                        "event_subtype = %s "
+                        "ORDER BY "
+                        "event_time DESC",
+                        (event_type.value, event_subtype.value))
+            return [_row_to_event(row) for row in cur.fetchall()]
+
+    # See https://www.postgresql.org/docs/9.5/functions-json.html#FUNCTIONS-JSON-OP-TABLE  # noqa
+    # to understand referencing email field from jsonb representation
+
+    # Based on results of EXPLAIN of queries in psql 9.5, looks like postgres
+    # can use our index for exact matches, but can't use it for anything with a
+    # wildcard
+    # TODO: Should test against newest postgresql, May need to look up gin
+    #  indexes to improve this if performance becomes an issue.
+    #  See https://stackoverflow.com/questions/33025890/indexing-jsonb-data-for-pattern-matching-searches # noqa
+    def get_events_by_email(self, email: str):
+        with self._transaction.dict_cursor() as cur:
+            cur.execute("SELECT " + _read_cols + " FROM "
+                        "event_log "
+                        "WHERE "
+                        "event_state->>'email' ILIKE %s "
+                        "ORDER BY "
+                        "event_state->>'email', event_time DESC",
+                        (email+"%",))
+            return [_row_to_event(row) for row in cur.fetchall()]
+
+    def get_events_by_account(self, account_id: UUID):
+        with self._transaction.dict_cursor() as cur:
+            cur.execute("SELECT " + _read_cols + " FROM "
+                        "event_log "
+                        "WHERE "
+                        "event_state->>'account_id' = %s "
+                        "ORDER BY "
+                        "event_time DESC",
+                        (str(account_id),))
+            return [_row_to_event(row) for row in cur.fetchall()]
+
+    def delete_event(self, event_id: UUID):
+        with self._transaction.cursor() as cur:
+            cur.execute("DELETE FROM event_log "
+                        "WHERE "
+                        "id = %s",
+                        (str(event_id),))
+            return cur.rowcount == 1

microsetta_private_api/repo/tests/test_event_log_repo.py

@@ -0,0 +1,143 @@
+import json
+
+import psycopg2
+import unittest
+
+from microsetta_private_api.model.log_event import LogEvent, EventType, \
+    EventSubtype
+from microsetta_private_api.repo.event_log_repo import EventLogRepo
+from microsetta_private_api.repo.transaction import Transaction
+
+import uuid
+
+from microsetta_private_api.util.util import json_converter
+
+
+class EventLogTests(unittest.TestCase):
+    def test_event_log(self):
+        event_id = uuid.uuid4()
+        acct_id = uuid.uuid4()
+        event = LogEvent(
+            event_id,
+            EventType.EMAIL,
+            EventSubtype.EMAIL_BANKED_SAMPLE_NOW_PLATED,
+            None,
+            {
+                "email": "[email protected]",
+                "account_id": str(acct_id),
+                "blahblah": "Blah blah blah",
+                "ski": "ball"
+            }
+        )
+
+        with Transaction() as t:
+            events = EventLogRepo(t)
+
+            insertion = events.add_event(event)
+            self.assertTrue(insertion)
+
+            # Check full event log
+            self.assertEqual(events.get_events()[0].event_id, event_id)
+
+            # Check event log filtered by primary type
+            primary_type = events.get_events_by_type(EventType.EMAIL)[0]
+            self.assertEqual(primary_type.event_id, event_id)
+
+            # Check fields
+            client_obj = json.loads(json.dumps(primary_type.to_api(),
+                                    default=json_converter))
+            self.assertEqual(client_obj['event_id'], str(event_id))
+            self.assertEqual(client_obj['event_type'],
+                             EventType.EMAIL.value)
+            self.assertEqual(client_obj['event_subtype'],
+                             EventSubtype.EMAIL_BANKED_SAMPLE_NOW_PLATED.value)
+            self.assertEqual(client_obj['event_state']['ski'], 'ball')
+
+            # Check event log filtered by subtype
+            subtype = events.get_events_by_subtype(
+                EventType.EMAIL,
+                EventSubtype.EMAIL_BANKED_SAMPLE_NOW_PLATED)[0]
+            self.assertEqual(subtype.event_id, event_id)
+
+            # Check event log filtered by exact email
+            exact = events.get_events_by_email("[email protected]")[0]
+            self.assertEqual(exact.event_id, event_id)
+
+            # Check event log filtered by email prefix
+            partial = events.get_events_by_email("foobarbaz@ka")[0]
+            self.assertEqual(partial.event_id, event_id)
+
+            # Check event log filtered by account
+            acct = events.get_events_by_account(acct_id)[0]
+            self.assertEqual(acct.event_id, event_id)
+
+            # Check event can be deleted
+            deletion = events.delete_event(event_id)
+            self.assertTrue(deletion)
+
+            # Check event is no longer there
+            all = events.get_events()
+            if len(all) > 0:
+                assert all[0].event_id != event_id
+            t.rollback()
+
+    def test_dups_rejected(self):
+        event = LogEvent(
+            uuid.uuid4(),
+            EventType.EMAIL,
+            EventSubtype.EMAIL_BANKED_SAMPLE_NOW_PLATED,
+            None,
+            {}
+        )
+        with Transaction() as t:
+            events = EventLogRepo(t)
+            events.add_event(event)
+            with self.assertRaises(psycopg2.errors.UniqueViolation):
+                events.add_event(event)
+            t.rollback()
+
+    def test_empty_emails(self):
+        acct_id = uuid.uuid4()
+        event1 = LogEvent(
+            uuid.uuid4(),
+            EventType.EMAIL,
+            EventSubtype.EMAIL_BANKED_SAMPLE_NOW_PLATED,
+            None,
+            {
+                'email': "[email protected]"
+            }
+        )
+        event2 = LogEvent(
+            uuid.uuid4(),
+            EventType.EMAIL,
+            EventSubtype.EMAIL_BANKED_SAMPLE_NOW_PLATED,
+            None,
+            {
+                'email': "[email protected]"
+            }
+        )
+        event3 = LogEvent(
+            uuid.uuid4(),
+            EventType.EMAIL,
+            EventSubtype.EMAIL_BANKED_SAMPLE_NOW_PLATED,
+            None,
+            {
+                'account_id': str(acct_id)
+            }
+        )
+        with Transaction() as t:
+            events = EventLogRepo(t)
+            events.add_event(event1)
+            events.add_event(event2)
+            events.add_event(event3)
+
+            self.assertEqual(
+                len(events.get_events_by_email("[email protected]")),
+                2
+            )
+            self.assertEqual(
+                len(events.get_events_by_account(acct_id)),
+                1
+            )
+
+            t.rollback()