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https://github.com/gmr/consulate

Python client for the Consul HTTP API
https://github.com/gmr/consulate

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Python client for the Consul HTTP API

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README 

        
Consulate: A Consul Client Library

==================================



Consulate is a Python client library and set of application for the Consul

service discovery and configuration system.



|Version| |Status| |Coverage|



Installation

------------



Consulate is available via via `pypi `_

and can be installed with easy_install or pip:



.. code:: bash



    pip install consulate



If you require communicating with Consul via a Unix socket, there is an extra

dependency that is installed via:



.. code:: bash



    pip install consulate[unixsocket]



Command Line Utilities

----------------------

Consulate comes with two command line utilities that make working with Consul

easier from a management perspective. The ``consulate`` application provides

a cli wrapper for common tasks performed.



consulate

^^^^^^^^^

The consulate application provides a CLI interface for registering a service,

backing up and restoring the contents of the KV database, and actions for getting,

setting, and deleting keys from the KV database.



.. code:: bash



    usage: consulate [-h] [--api-scheme API_SCHEME] [--api-host API_HOST]

                     [--api-port API_PORT] [--datacenter DC] [--token TOKEN]

                     {register,deregister,kv,run_once} ...



    CLI utilities for Consul



    optional arguments:

      -h, --help            show this help message and exit

      --api-scheme API_SCHEME

                            The scheme to use for connecting to Consul with

      --api-host API_HOST   The consul host to connect on

      --api-port API_PORT   The consul API port to connect to

      --datacenter DC       The datacenter to specify for the connection

      --token TOKEN         ACL token



    Commands:

      {register,deregister,kv,run_once,services}

        register            Register a service for this node

        deregister          Deregister a service for this node

        kv                  Key/Value Database Utilities

        run_once            Lock command

        services            List services for this node



    If the CONSUL_RPC_ADDR environment variable is set, it will be parsed and used

    for default values when connecting.



Service Registration Help:



.. code:: bash



    usage: consulate register [-h] [-a ADDRESS] [-p PORT] [-s SERVICE_ID]

                              [-t TAGS]

                              name {check,httpcheck,no-check,ttl} ...



    positional arguments:

      name                  The service name



    optional arguments:

      -h, --help            show this help message and exit

      -a ADDRESS, --address ADDRESS

                            Specify an address

      -p PORT, --port PORT  Specify a port

      -s SERVICE_ID, --service-id SERVICE_ID

                            Specify a service ID

      -t TAGS, --tags TAGS  Specify a comma delimited list of tags



    Service Check Options:

      {check,httpcheck,no-check,ttl}

        check               Define an external script-based check

        httpcheck           Define an HTTP-based check

        no-check            Do not enable service monitoring

        ttl                 Define a duration based TTL check



KV Database Utilities Help:



.. code:: bash



    usage: consulate kv [-h] {backup,restore,ls,mkdir,get,set,rm} ...



    optional arguments:

      -h, --help            show this help message and exit



    Key/Value Database Utilities:

      {backup,restore,ls,mkdir,get,set,rm}

        backup              Backup to stdout or a JSON file

        restore             Restore from stdin or a JSON file

        ls                  List all of the keys

        mkdir               Create a folder

        get                 Get a key from the database

        set                 Set a key in the database

        rm                  Remove a key from the database



Locking Operations Help:



.. code:: bash



    usage: consulate [-h] run_once [-i INTERVAL] prefix command



    positional arguments:

      prefix                the name of the lock which will be held in Consul.

      command               the command to run



    optional arguments:

      -h, --help            show this help message and exit

      -i, --interval        hold the lock for INTERVAL seconds



Service listing Help:



.. code:: bash



    usage: consulate services [-h] [-i INDENT]



    optional arguments:

      -h, --help            show this help message and exit

      -i INDENT, --indent INDENT

                            The indent level for output



API Usage Examples

------------------

The following examples highlight the usage of Consulate and does not document

the scope of the full Consulate API.



*Using Consulate with the Consul kv database:*



.. code:: python



    consul = consulate.Consul()



    # Set the key named release_flag to True

    consul.kv['release_flag'] = True



    # Get the value for the release_flag, if not set, raises AttributeError

    try:

        should_release_feature = consul.kv['release_flag']

    except AttributeError:

        should_release_feature = False



    # Delete the release_flag key

    del consul.kv['release_flag']



    # Find all keys that start with "fl"

    consul.kv.find('fl')



    # Find all keys that start with "feature_flag" terminated by "/" separator

    consul.kv.find('feature_flag', separator='/')



    # Check to see if a key called "foo" is set

    if "foo" in consul.kv:

        print 'Already Set'



    # Return all of the items in the key/value store

    consul.kv.items()



*Working with the Consulate.agent API:*



.. code:: python



    consul = consulate.Consul()



    # Get all of the service checks for the local agent

    checks = consul.agent.checks()



    # Get all of the services registered with the local agent

    services = consul.agent.services()



    # Add a service to the local agent

    consul.agent.service.register('redis',

                                   port=6379,

                                   tags=['master'],

                                   ttl='10s')



*Fetching health information from Consul:*



.. code:: python



    consul = consulate.Consul()



    # Get the health of a individual node

    health = consul.health.node('my-node')



    # Get all checks that are critical

    checks = consul.health.state('critical')



For more examples, check out the Consulate documentation.



.. |Version| image:: https://img.shields.io/pypi/v/consulate.svg?

   :target: https://pypi.python.org/pypi/consulate



.. |Status| image:: https://img.shields.io/travis/gmr/consulate.svg?

   :target: https://travis-ci.org/gmr/consulate



.. |Coverage| image:: https://img.shields.io/codecov/c/github/gmr/consulate.svg?

   :target: https://codecov.io/github/gmr/consulate?branch=master