examples/event_sample.py

from predictionio import EventClient
from predictionio import NotFoundError
from datetime import datetime
import pytz
import sys

client = EventClient(app_id=4, url="http://localhost:7070")

# Check status
print("Check status")
print(client.get_status())

# First event
first_event_properties = {
    "prop1" : 1,
    "prop2" : "value2",
    "prop3" : [1, 2, 3],
    "prop4" : True,
    "prop5" : ["a", "b", "c"],
    "prop6" : 4.56 ,
    }
first_event_time = datetime(
    2004, 12, 13, 21, 39, 45, 618000, pytz.timezone('US/Mountain'))
first_event_response = client.create_event(
    event="my_event",
    entity_type="user",
    entity_id="uid",
    properties=first_event_properties,
    event_time=first_event_time,
    )
print("First Event response")
print(first_event_response)
print

# Second event
second_event_properties = {
    "someProperty" : "value1",
    "anotherProperty" : "value2",
    }
second_event_response = client.create_event(
    event="my_event",
    entity_type="user",
    entity_id="uid",
    target_entity_type="item",
    target_entity_id="iid",
    properties=second_event_properties,
    event_time=datetime(2014, 12, 13, 21, 38, 45, 618000, pytz.utc))
print("Second Event response")
print(second_event_response)
print


# Get the first event from Event Server
first_event_id = first_event_response.json_body["eventId"]
print("Get Event")
event = client.get_event(first_event_id)
print(event)
print

# Delete the first event from Event Server
print("Delete Event")
delete_response = client.delete_event(first_event_id)
print(delete_response)
print

# Delete the first event from Event Server again should yield exception.
print("Delete Event Again")
try:
  delete_response = client.delete_event(first_event_id)
except NotFoundError, ex:
  print("The expected error: {0}".format(ex))
print

# "user"-helper methods

# Set user properties implicitly create a user
# This call creates a user "foo", and set the properties of "foo".
print("Create user foo")
foo_properties = {"city": "sunnyvale", "car": "honda fit"}
print(client.set_user("foo", properties=foo_properties))

# This call overrides the existing properties for user "foo", setting "car" to
# a new "honda odyssey" and create a new property "food" to "seafood".
print("Set new properties")
foo_properties = {"car": "honda odyssey", "food": "seafood"}
print(client.set_user("foo", properties=foo_properties))

# This call removes the specified properties. It ignores the value of the dict.
# After this call, the "city" will become an unset field.
print("Unset properties")
foo_properties = {"city": "x"}
print(client.unset_user("foo", properties=foo_properties))

# This call deletes a user
print("Delete user")
print(client.delete_user("foo"))

# The SDK also support specifying the eventTime. It is useful for importing 
# events happened in the past.
foo_time = datetime(2014, 8, 31, 4, 56, tzinfo=pytz.timezone('US/Pacific'))
print("Create user at " + str(foo_time))
print(client.set_user("Jarvis", {}, foo_time))

# "item"-helper methods

# Set item properties implicitly create a item
# This call creates a item "bar", and set the properties of "bar".
print("Create item bar")
bar_properties = {"city": "santa clara", "weight": 6.9}
print(client.set_item("bar", properties=bar_properties))

# Similar to user-methods, we can do the same thing with item
print("Set new properties")
bar_properties = {"weight": 6.2}
print(client.set_item("bar", properties=bar_properties))

# This call removes the specified properties. It ignores the value of the dict.
# After this call, the "city" will become an unset field.
print("Unset properties")
bar_properties = {"city": None}
print(client.unset_item("bar", properties=bar_properties))

# This call deletes a item
print("Delete item")
print(client.delete_item("bar"))


# "record" action helper functions

# This call creates a event between a user and an item. In particular, this set
# the price of the action
print("Record user action")
action_properties = {"price": 10.0}
print(client.record_user_action_on_item("buy", "foo", "bar", action_properties))