Welcome to Sunspear’s documentation!¶
Sunspear in a library for storing activity streams. It is an implementation of the
JSON Activity Stream 1.0 specification.
Currently, Sunspear only supports Riak
as a storage backend, however, it is modular
enough to allow the use of custom backend.
Contents:
User Guide¶
Introduction¶
Sunspear is a python library which provides an API to store and manage activity stream items.
What it is¶
Sunspear is a library which allows you to add feeds and activity streams to your applications. It serializes these activities and feed items as described in the JSON Activity Stream 1.0 specifications.
The specifications look scary, dull and boring (and they are), but essentially, an activity for:
``John Doe`` added ``Jane Doe`` to the group ``Party Planning``
boils down to:
{
"actor": {
"objectType": "user",
"displayName": "John Doe",
"id": "user:1234", # Totally optional, it will be generated for you if you don't provide one.
"title": "Manager",
"foo": "bar"
},
"object": {
"objectType": "user",
"displayName": "Jane Doe",
"title": "Devloper",
"foo": "baz"
},
"target": {
"objectType": "group",
"displayName": "Party Planning"
},
"bar": "bee",
"verb": "added"
}
The main takeaway points are:
- An
activity
is composed ofobjects
. - An
activity
must define anactor
,verb
andobject
. - An
object
must define anobjectType
and adisplayName
objects
andactivities
may contain arbitrary attributes.
Sunspear also implements parts of some extensions to the specificiations. More specifically, Audience Targeting and Responses.
Quick Start Guide¶
Usage¶
Sunspear provides a very simple api managing activity stream items
Initialize¶
You initialize sunspear by providing sunspear.clients.SunspearClient
with an instance of a backend. All backends
are located in sunspear.backends
and extend the sunspear.backend.base.BaseBackend
:
from sunspear.backends.RiakBackend import RiakBackend
from sunspear.clients import SunspearClient
import datetime
client = SunspearClient(RiakBackend(**{
"host_list": [{'port': 8087}],
"defaults": {'host': '127.0.0.1'},
}))
Create Objects¶
Once you have a reference to the SunspearClient
, you can, create objects:
obj = client.create_object({
"objectType": "user"
"displayName": "John Doe",
"email": "jdoe@gmail.com",
"id": "user:1234",
})
Note
If you do not specify the id
of an object, one will be automatically generated for you. This also applies for the published
date.
Create Activity¶
You can also create an activity
. As per the JSON Activity Stream 1.0 specifications, an activity must have a verb
, actor
and an object
.
Creating an activity for:
John Doe created the team "Marketing"
may look something like this:
activity = client.create_activity({
"verb": "create",
"actor": "user:1234",
"object": {
"objectType": "team",
"displayName": "Marketing",
},
})
Couple of intresting things to note here:
- We used the
id
for theactor
instead of the full blownobject
because we created theobject
earlier. - We didn’t specify an
id
for ourteam
object. One will be automatically generated. - The verb is arbratry. It can be anything except for response and activity summary verbs. For list a list of common
verbs
andobjects
you may want to use, see the Activity Base Schema. create_activity
returns the fully parsed activity.
Note
The reason you can’t use response and activity summary verbs is because Sunspear uses some of them internally.
Create Responses¶
You can create responses to activities such as liking an activity or replying to an activity. Sunspear supports a few of the response types described here.
All methods that create responses, return the newly created response activity and the original activity the response was created for with the response activity embedded.
Note
Sunspear does responses a little bit differently than what is describe in the specifications.
Responses themselves are fully fledged activities
and not objects
. This was untimatly done to provide maximum flexibility.
Create a Reply¶
You can create replies to activities.
reply_activity, original_activity = client.create_reply(activity['id'], "user:1234",
"This is my Reply!")
Create a Like¶
You can like activities.
like_activity, original_activity = client.create_like(activity['id'], "user:1234")
Delete Reply¶
original_activity = client.delete_reply(reply_activity["id"])
Delete Like¶
original_activity = client.delete_like(reply_activity["id"])
Get Activities¶
You can get activities by providing a list of ids
.
client.get_activities([activity["id"], "1234", "3456"])
Note
If the activity with the id does not exist, it is simply ignored.
Get Objects¶
You can get objects by providing a list of ids
.
client.get_objects([obj["id"], "1234", "3456"])
Note
If the object with the id does not exist, it is simply ignored.
Developer Guide¶
API Guide¶
Sunspear Client¶
sunspear.clients¶
-
class
sunspear.clients.
SunspearClient
(backend, **kwargs)¶ The class is used to create, delete, remove and update activity stream items. This is the main class you use to interact with
sunspear
-
clear_all
()¶ Deletes all activity stream data
-
clear_all_activities
()¶ Deletes all activities data
-
clear_all_objects
()¶ Deletes all objects data
-
create_activity
(actstream_dict)¶ Creates an activity. You can provide objects for activities as dictionaries or as ids for already existing objects.
If you provide a dictionary for an object, it is saved as a new object. If you provide an object id and the object does not exist, it is saved anyway, and returned as an empty dictionary when retriving the activity.
Parameters: actstream_dict (dict) – a dictionary representing the activity
we want to store in the backend.
-
create_like
(activity, actor, content='', extra={}, **kwargs)¶ Creates a
like
for an activity.Parameters: - activity (a string or dict) – the activity we want to create the sub-item for
- actor (a string or dict) – the
object
creating the sub-activity - content (a string or dict) – a string or an
object
representing the content of the sub-activity - extra (dict) – additional data the is to be included as part of the
sub-activity
activity
-
create_object
(object_dict)¶ Creates an object that can be used as part of an activity. If you specific and object with an id that already exists, that object is overidden.
Parameters: object_dict (dict) – a dictionary representing the object we want to store in the backend.
-
create_reply
(activity, actor, content, extra={}, **kwargs)¶ Creates a
reply
for an activity.Parameters: - activity (a string or dict) – the activity we want to create the sub-item for
- actor (a string or dict) – the
object
creating the sub-activity - content (a string or dict) – a string or an
object
representing the content of the sub-activity - extra (dict) – additional data the is to be included as part of the
sub-activity
activity
-
delete_activity
(activity_id, **kwargs)¶ Deletes an activity item and all associated sub items
Parameters: activity_id (string) – The id of the activity we want to create a reply for
-
delete_like
(activity_id, **kwargs)¶ Deletes a
like
made on an activity. This will also update the corresponding activity.Parameters: activity_id (string) – the id of the like activity to delete.
-
delete_reply
(activity_id, **kwargs)¶ Deletes a
reply
made on an activity. This will also update the corresponding activity.Parameters: activity_id (string) – the id of the reply activity to delete.
-
get_activities
(activity_ids=[], **kwargs)¶ Gets a list of activities. Specific backends may support other arguments. Please see reference of the specific backends to see all
kwargs
supported.Parameters: activity_ids (list) – The list of activities you want to retrieve
-
get_backend
()¶ The backend the client was initialized with.
Returns: reference to the backend the client was initialized with.
-
get_objects
(object_ids=[])¶ Gets a list of objects by object_ids.
Parameters: object_ids (list) – a list of objects
-
Sunspear Client¶
sunspear.backends.base¶
-
class
sunspear.backends.base.
BaseBackend
¶ -
activity_create
(activity, **kwargs)¶ Stores a new activity to the backend.
Parameters: activity (dict) – a dict representing the activity Returns: a dict representing the newly stored activity
-
activity_delete
(activity, **kwargs)¶ Performs the task of actually deleting the activity from the backend.
Parameters: activity (dict) – a dict representing the activity
-
activity_exists
(activity, **kwargs)¶ Determins if an
activity
already exists in the backend.Parameters: activity (dict) – the activity we want to determin if it exists Returns: True
if theactivity
exists, otherwiseFalse
-
activity_get
(activity, **kwargs)¶
-
activity_update
(activity, **kwargs)¶ Performs the actual task of updating the activity in the backend.
Parameters: activity (dict) – a dict representing the activity Returns: a dict representing the newly stored activity
-
clear_all_activities
()¶ Clears all activities from the backend.
-
clear_all_objects
()¶ Clears all objects from the backend.
-
create_activity
(activity, **kwargs)¶ Stores a new
activity
in the backend. If an object with the same id already exists in the backend, aSunspearDuplicateEntryException
is raised. If an ID is not provided, one is generated on the fly.Activities that provide
objects
as dictionaries have their objects processed and stored usingcreate_obj
, and theobjects
are replaced with their id’s within the activity.Parameters: activity (dict) – activity we want to store in the backend Raises: SunspearDuplicateEntryException
if the record already exists in the database.Returns: dict representing the new activity.
-
create_obj
(obj, **kwargs)¶ Stores a new
obj
in the backend. If an object with the same id already exists in the backend, aSunspearDuplicateEntryException
is raised. If an ID is not provided, one is generated on the fly.Parameters: obj (dict) – obj we want to store in the backend Raises: SunspearDuplicateEntryException
if the record already exists in the database.Returns: dict representing the new obj.
-
create_sub_activity
(activity, actor, content, extra={}, sub_activity_verb='', **kwargs)¶ Creates a new sub-activity as a child of
activity
.Parameters: - activity (a string or dict) – the activity we want to create the sub-item for
- actor (a string or dict) – the
object
creating the sub-activity - content (a string or dict) – a string or an
object
representing the content of the sub-activity - extra (dict) – additional data the is to be included as part of the
sub-activity
activity - sub_activity_verb (string) – the verb of the sub activity
Returns: a tuple containing the new sub activity and the original activity the sub activity was created for.
-
dehydrate_activities
(activities)¶ Takes a raw list of activities returned from riak and replace keys with contain ids for riak objects with actual riak object
-
delete_activity
(activity, **kwargs)¶ Deletes an existing activity from the backend.
Parameters: activity (dict) – a dict representing the activity Raises: SunspearInvalidActivityException
if the activity doesn’t have a valid id.
-
delete_obj
(obj, **kwargs)¶ Deletes an existing obj from the backend.
raises:
SunspearInvalidObjectException
– if the obj doesn’t have a valid id.
Parameters: obj (dict) – a dict representing the obj Raises: SunspearInvalidObjectException
-
delete_sub_activity
(sub_activity, sub_activity_verb, **kwargs)¶ Deletes a
sub_activity
made on an activity. This will also update the corresponding activity.Parameters: - sub_activity (string) – the id of the reply activity to delete
- sub_activity_verb (string) – the verb of the sub activity
-
get_activity
(activity_ids=[], **kwargs)¶ Gets an activity or a list of activities from the backend.
Parameters: activity_ids (list) – a list of ids of activities that will be retrieved from the backend. Returns: a list of activities. If an activity is not found, a partial list should be returned.
-
get_new_id
()¶ Generates a new unique ID. The default implementation uses uuid1 to generate a unique ID.
Returns: a new id
-
get_obj
(obj_ids=[], **kwargs)¶ Gets an obj or a list of activities from the backend.
Parameters: obj (list) – a list of ids of activities that will be retrieved from the backend. Returns: a list of activities. If an obj is not found, a partial list should be returned.
-
get_sub_activity_attribute
(sub_activity_verb)¶
-
get_sub_activity_model
(sub_activity_verb)¶
-
is_sub_activity_verb_valid
(sub_activity_verb)¶
-
obj_create
(obj, **kwargs)¶ Stores a new obj to the backend.
Parameters: obj (dict) – a dict representing the obj Returns: a dict representing the newly stored obj
-
obj_delete
(obj, **kwargs)¶
-
obj_exists
(obj, **kwargs)¶ Determins if an
object
already exists in the backend.Parameters: obj (dict) – the activity we want to determin if it exists Returns: True
if theobject
exists, otherwiseFalse
-
obj_get
(obj, **kwargs)¶
-
obj_update
(obj, **kwargs)¶
-
sub_activity_create
(activity, actor, content, extra={}, sub_activity_verb='', sub_activity_attribute='', **kwargs)¶ Creates a new sub-activity as a child of
activity
.Parameters: - activity (a string or dict) – the activity we want to create the sub-item for
- actor (a string or dict) – the
object
creating the sub-activity - content (a string or dict) – a string or an
object
representing the content of the sub-activity - extra (dict) – additional data the is to be included as part of the
sub-activity
activity - sub_activity_verb (string) – the verb of the sub activity
- sub_activity_attribute (string) – the attribute in the activity the
sub-activity
will be a part of
Returns: a tuple containing the new sub activity and the original activity the sub activity was created for.
-
sub_activity_delete
(sub_activity, sub_activity_verb, **kwargs)¶
-
update_activity
(activity, **kwargs)¶ Updates an existing activity in the backend. If the object does not exist, it is created in the backend.
Parameters: activity (dict) – a dict representing the activity Raises: SunspearInvalidActivityException
if the activity doesn’t have a valid id.Returns: a dict representing the newly stored activity
-
update_obj
(obj, **kwargs)¶ Updates an existing obj in the backend. If the object does not exist, it is created in the backend.
raises:
SunspearInvalidObjectException
– if the obj doesn’t have a valid id.
Parameters: obj (dict) – a dict representing the obj Raises: SunspearInvalidObjectException Returns: a dict representing the newly stored obj
-
sunspear.backends.riak¶
Copyright 2016 Numan Sachwani <numan856@gmail.com>
This file is provided to you under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
-
class
sunspear.backends.riak.
RiakBackend
(protocol='pbc', nodes=[], objects_bucket_name='objects', activities_bucket_name='activities', **kwargs)¶ -
activity_create
(activity, **kwargs)¶ Creates an activity. You can provide objects for activities as dictionaries or as ids for already existing objects.
If you provide a dictionary for an object, it is saved as a new object.
If you provide an object id and the object does not exist, it is saved anyway, and returned as an empty dictionary when retriving the activity later.
-
activity_delete
(activity, **kwargs)¶ Deletes an activity item and all associated sub items
-
activity_exists
(activity, **kwargs)¶
-
activity_get
(activity_ids=[], raw_filter='', filters={}, include_public=False, audience_targeting={}, aggregation_pipeline=[], **kwargs)¶ Gets a list of activities. You can also group activities by providing a list of attributes to group by.
Parameters: - activity_ids (list) – The list of activities you want to retrieve
- filters (dict) – filters list of activities by key, value pair. For example,
{'verb': 'comment'}
would only return activities where theverb
wascomment
. Filters do not work for nested dictionaries. - raw_filter (string) – allows you to specify a javascript function as a string. The function should return
true
if the activity should be included in the result set orfalse
it shouldn’t. If you specify a raw filter, the filters specified infilters
will not run. How ever, the results will still be filtered based on theaudience_targeting
parameter. - include_public (boolean) – If
True
, and theaudience_targeting
dictionary is defined, activities that are not targeted towards anyone are included in the results - audience_targeting (dict) – Filters the list of activities targeted towards a particular audience. The key for the dictionary is one of
to
,cc
,bto
, orbcc
. The values are an array of object ids - aggregation_pipeline (array of
sunspear.aggregators.base.BaseAggregator
) – modify the final list of activities. Exact results depends on the implementation of the aggregation pipeline
Returns: list – a list of activities matching
activity_ids
. If the activities is not found, it is not included in the result set. Activities are returned in the order of ids provided.
-
activity_update
(activity, **kwargs)¶
-
clear_all
(**kwargs)¶ Deletes all activity stream data from riak
-
clear_all_activities
(**kwargs)¶ Deletes all activities data from riak
-
clear_all_objects
(**kwargs)¶ Deletes all objects data from riak
-
get_new_id
()¶ Generates a new unique ID. The default implementation uses uuid1 to generate a unique ID.
Returns: a new id
-
obj_create
(obj, **kwargs)¶
-
obj_delete
(obj, **kwargs)¶
-
obj_exists
(obj, **kwargs)¶
-
obj_get
(obj, **kwargs)¶ Given a list of object ids, returns a list of objects
-
obj_update
(obj, **kwargs)¶
-
set_activity_indexes
(riak_object)¶ Store indexes specific to an
Activity
. Stores the following indexes: 1.verb
of theActivity
2.actor
of theActivity
3.object
of theActivity
4. if target is defined, verb for thetarget
of the ActivityParameters: riak_object (RiakObject) – a RiakObject representing the model of the class
-
set_general_indexes
(riak_object)¶ Sets the default riak 2Is.
Parameters: riak_object (RiakObject) – a RiakObject representing the model of the class
-
set_sub_item_indexes
(riak_object, **kwargs)¶ Store indexes specific to a sub-activity. Stores the following indexes: 1. id of the the parent
Activity
of this sub-activityParameters: riak_object (RiakObject) – a RiakObject representing the model of the class
-
sub_activity_create
(activity, actor, content, extra={}, sub_activity_verb='', published=None, **kwargs)¶
-
sub_activity_delete
(sub_activity, sub_activity_verb, **kwargs)¶ Deletes a sub_activity made on an activity. This will also update the corresponding parent activity.
Parameters: - sub_activity (string) – the id of the reply activity to delete.
- sub_activity_verb (string) – the verb of the sub activity
Returns: a dict representing the updated parent activity
-
References¶
License¶
Sunspear is licensed under the Apache 2 license.
The full license text can be found below (Sunspear License).
Authors¶
Sentry was originally written and is maintained by Numan Sachwani.
A lit of additional contributors can be seen on GitHub.
Sunspear License¶
Apache LicenseVersion 2.0, January 2004
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