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Project Description
# python-meteor

An event driven Meteor client

**Installation**

```bash
$ pip install python-meteor
```

**Table of Contents**

- [History](#history)
- [TODO](#TODO)
- [Quick Start](#quick-start)
- [Usage](#usage)
- [Example](#example)
- [Collaborators](#collaborators)

## History

**Latest Version** 0.1.6

- Add support for meteor login resume tokens (thanks [@ppettit](https://github.com/ppettit))

**Version** 0.1.5

- BUGFIX - unsubscribe was not unsubcribing (missing sub ID) (thanks [@tdamsma](https://github.com/tdamsma))
- examples and docs support python 3

**Version** 0.1.4

- BUGFIX - update connected status when reconnecting (thanks [@ppettit](https://github.com/ppettit))
- BUGFIX - make sure `logged_in` callback get's fired (thanks [@pmgration](https://github.com/pmgration))
- NOTE: python-ddp library has been updated that addresses connection problems

**Version** 0.1.3

- Fixed a bug that was causing a crash while removing a field on a change event (thanks [@ppettit](https://github.com/ppettit))

**Version** 0.1.2

- Implemented auto reconnect (auto reconnect on by default) and reconnected event emitter

**Version** 0.1.1

- Fixed bug in setup, was including built in hashlib

**Version** 0.1.0

- Initial implementation, add ability to call, subscribe, unsubscribe, do basic queries and login
- Data is stored in a local python dictionary (in memory) and updated in real time as collection change events are received. This allows for very a basic find and find_one APIs to be implemented.

## TODO

- Full minimongo API for find and find_one
- CI unit testing with Travis

## Quick Start

### General Commands

**Create a Meteor client and connect**

```python
from MeteorClient import MeteorClient

client = MeteorClient('ws://127.0.0.1:3000/websocket')
client.connect()
```

**Establish A Connection Without Auto Reconnect**

```python
from MeteorClient import MeteorClient

client = MeteorClient('ws://127.0.0.1:3000/websocket', auto_reconnect=False)
client.connect()
```

**Establish A Connection And With Reconnect Different Frequency**

```python
from MeteorClient import MeteorClient
# try to reconnect every second
client = MeteorClient('ws://127.0.0.1:3000/websocket', auto_reconnect=True, auto_reconnect_timeout=1)
client.connect()
```

**Call a remote function**

```python
def callback_function(error, result):
if error:
print(error)
return

print(result)

client.call('someFunction', [1, 2, 3], callback_function)
```

**Subscribe and Unsubscribe**

```python
def subscription_callback(error):
if error:
print(error)

client.subscribe('posts', callback=subscription_callback)
client.unsubscribe('posts')
```

**Find All Data In a Collection**

```python
all_posts = client.find('posts')
```

**Find Data In a Collection With Selector**

```python
sacha_posts = client.find('posts', selector={'author': 'Sacha Greif'})
```

**Find One**

```python
one_post = client.find_one('posts')
```

**Fine One With Selector**

```python
one_post = client.find_one('posts', selector={'author': 'Sacha Greif'})
```

**Insert**

```python
def insert_callback(error, data):
if error:
print(error)
return
print(data)

client.insert('posts', {'title': 'Google', 'url': 'https://google.com', 'comments': 'Search'}, callback=insert_callback)
```

**Update**

```python
def update_callback(error, data):
if error:
print(error)
return
print(data)

client.update('posts', {'title': 'Google'}, {'comments': 'Google main page'}, callback=update_callback)
```

**Remove**

```python
def remove_callback(error, data):
if error:
print(error)
return
print(data)

client.remove('posts', {'title': 'Google'}, callback=remove_callback)
```
## Usage

### Class Init

####DDPClient(url, auto_reconnect=True, auto_reconnect_timeout=0.5, debug=False)

**Arguments**

_url_ - to connect to ddp server

**Keyword Arguments**

_auto_reconnect_ - automatic reconnect (default: True)
_auto_reconnect_timeout_ - reconnect every X seconds (default: 0.5)
_debug_ - print out lots of debug info (default: False)

### Functions

####connect()

Connect to the meteor server

####login(user, password, token=token, callback=None)

Login with a username and password. If a token is provided it will be tried first, falling back to username and password if
the token is invalid.

**Arguments**

_user_ - username or email address
_password_ - the password for the account

**Keyword Arguments**

_token_ - meteor resume token
_callback_ - callback function containing error as first argument and login data

####logout(callback=None)

Logout a user

**Keyword Arguments**

_callback_ - callback function called when the user has been logged out

#### call(method, params, callback=None)

Call a remote method

**Arguments**

_method_ - remote method name
_params_ - remote method parameters

**Keyword Arguments**

_callback_ - callback function containing return data

#### subscribe(name, params=[], callback=None)

Subscribe to a collection

**Arguments**

_name_ - the name of the publication
_params_ - the subscription parameters

**Keyword Arguments**

_callback_ - a function callback that returns an error (if exists)

####unsubscribe(name)

Unsubscribe from a collection

**Arguments**

_name_ - the name of the publication

####find(collection, selector={})

Find data in a collection

**Arguments**

_collection_ - collection to search

**Keyword Arguments**

_selector_ - the query (default returns all items in a collection)

####find_one(collection, selector={})

Return one item from a collection

**Arguments**

_collection_ - collection to search

**Keyword Arguments**

_selector_ - the query (default returns first item found)

####insert(collection, doc, callback=None)

Insert an item into a collection

**Arguments**

_collection_ - the collection to be modified
_doc_ - The document to insert. May not yet have an _id attribute,
in which case Meteor will generate one for you.

**Keyword Arguments**

_callback_ - Optional. If present, called with an error object as the first argument and,
if no error, the _id as the second.

####update(collection, selector, modifier, callback=None)

Insert an item into a collection

**Arguments**

_collection_ - the collection to be modified
_selector_ - specifies which documents to modify
_modifier_ - Specifies how to modify the documents

**Keyword Arguments**

_callback_ - Optional. If present, called with an error object as the first argument and,
if no error, the number of affected documents as the second.

####remove(collection, selector, callback=None)

Remove an item from a collection

**Arguments**

_collection_ - the collection to be modified
_selector_ - Specifies which documents to remove

**Keyword Arguments**

_callback_ - Optional. If present, called with an error object as its argument.

### Events and Callback Arguments

When creating an instance of `MeteorClient` it is capable of emitting a few events with arguments. The documentation below assumes that you've instanciated a client with the following code:

```python
from MeteorClient import MeteorClient
client = MeteorClient('ws://127.0.0.1:3000/websocket')
```

#### connected

Register the event to a callback function

```python
def connected(self):
print('* CONNECTED')

client.on('connected', connected)
```

The connected event callback takes no arguments

#### closed

Register the event to a callback function

```python
def closed(self, code, reason):
print('* CONNECTION CLOSED {} {}'.format(code, reason))

client.on('closed', closed)
```

`closed` callback takes the following arguments

_code_ - the error code
_reason_ - the error message

### reconnected

```python
def reconnected(self):
print('* RECONNECTED')

client.on('reconnected', reconnected)
```

`reconnected` call back takes no arguments

#### failed

Register the event to a callback function

```python
def failed(collection, data):
print('* FAILED - data: {}'.format(str(data)))

client.on('failed', failed)
```

`failed` callback takes the following arguments

_data_ - the error data

#### added

Register the event to a callback function

```python
def added(collection, id, fields):
print('* ADDED {} {}'.format(collection, id))
for key, value in fields.items():
print(' - FIELD {} {}'.format(key, value))

client.on('added', added)
```

`added` callback takes the following arguments

_collection_ - the collection that has been modified
_id_ - the collection item id
_fields_ - the fields for item

#### changed

Register the event to a callback function

```python
def changed(collection, id, fields, cleared):
print('* CHANGED {} {}'.format(collection, id))
for key, value in fields.items():
print(' - FIELD {} {}'.format(key, value))
for key, value in cleared.items():
print(' - CLEARED {} {}'.format(key, value))

client.on('changed', changed)
```

`changed` callback takes the following arguments

_collection_ - the collection that has been modified
_id_ - the collection item id
_fields_ - the fields for item
_cleared_ - the fields for the item that have been removed

#### removed

Register the event to a callback function

```python
def removed(collection, id):
print('* REMOVED {} {}'.format(collection, id))

client.on('removed', removed)
```

`removed` callback takes the following arguments

_collection_ - the collection that has been modified
_id_ - the collection item id

#### subscribed

Register the event to a callback function

```python
def subscribed(subscription):
print('* SUBSCRIBED {}'.format(subscription))

client.on('subscribed', subscribed)
```

`subscribed` callback takes the following arguments

_subscription_ - the name of the subscription

#### unsubscribed

Register the event to a callback function

```python
def unsubscribed(subscription):
print('* UNSUBSCRIBED {}'.format(subscription))

client.on('unsubscribed', unsubscribed)
```

`unsubscribed` callback takes the following arguments

_subscription_ - the name of the subscription

#### logging_in

Register the event to a callback function

```python
def logging_in():
print('* LOGGIN IN')

client.on('logging_in', logging_in)
```

`logging_in` callback takes no arguments

#### logged_in

Register the event to a callback function

```python
def logged_in(data):
print('* LOGGED IN {}'.format(data))

client.on('logged_in', logged_in)
```

`logged_in` callback takes the following arguments

_data_ - login return data

#### logged_out

Register the event to a callback function

```python
def logged_out():
print('* LOGGED OUT')

client.on('logged_out', logged_out)
```

`logged_out` callback takes no arguments

####All of the callbacks

For reference

```python
client.on('connected', connected)
client.on('socket_closed', closed)
client.on('reconnected', reconnected)
client.on('failed', failed)
client.on('added', added)
client.on('changed', changed)
client.on('removed', removed)
client.on('subscibed', subscibed)
client.on('unsubscribed', unsubscribed)
client.on('logging_in', logging_in)
client.on('logged_in', logged_in)
client.on('logged_out', logged_out)
```

##Example

There is an included `example.py` script to use with the `todo` sample app included with meteor

Create the sample meteor app and start it

```bash
$ meteor create --example todos
$ meteor
```

Then run example.py

```bash
$ python example.py
```

##Collaborators

- [@ppettit](https://github.com/ppettit)
- [@pmgration](https://github.com/pmgration)
- [@tdamsma](https://github.com/tdamsma)
Release History

Release History

0.1.6

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

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0.1.5

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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0.1.4

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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0.1.3

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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0.1.2

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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0.1.1

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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0.1.0

History Node

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Changelog content for this version goes here.

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Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
python-meteor-0.1.6.tar.gz (7.7 kB) Copy SHA256 Checksum SHA256 Source May 5, 2015

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