rest_tornado¶

Authentication¶

Authentication is performed by passing a session token with each request. Tokens are generated via the SaltAuthHandler URL.

The token may be sent in one of two ways:

• Include a custom header named X-Auth-Token.
• Sent via a cookie. This option is a convenience for HTTP clients that automatically handle cookie support (such as browsers).

Usage¶

Commands are sent to a running Salt master via this module by sending HTTP requests to the URLs detailed below.

Data sent in POST and PUT requests must be in the format of a list of lowstate dictionaries. This allows multiple commands to be executed in a single HTTP request.

lowstate

A dictionary containing various keys that instruct Salt which command to run, where that command lives, any parameters for that command, any authentication credentials, what returner to use, etc.

Salt uses the lowstate data format internally in many places to pass command data between functions. Salt also uses lowstate for the LocalClient() Python API interface.

The following example (in JSON format) causes Salt to execute two commands:

[{
    "client": "local",
    "tgt": "*",
    "fun": "test.fib",
    "arg": ["10"]
},
{
    "client": "runner",
    "fun": "jobs.lookup_jid",
    "jid": "20130603122505459265"
}]

Multiple commands in a Salt API request will be executed in serial and makes no gaurantees that all commands will run. Meaning that if test.fib (from the example above) had an exception, the API would still execute "jobs.lookup_jid".

Responses to these lowstates are an in-order list of dicts containing the return data, a yaml response could look like:

- ms-1: true
  ms-2: true
- ms-1: foo
  ms-2: bar

In the event of an exception while executing a command the return for that lowstate will be a string, for example if no minions matched the first lowstate we would get a return like:

- No minions matched the target. No command was sent, no jid was assigned.
- ms-1: true
  ms-2: true

All Events¶

Exposes all "real-time" events from Salt's event bus on a websocket connection. It should be noted that "Real-time" here means these events are made available to the server as soon as any salt related action (changes to minions, new jobs etc) happens. Clients are however assumed to be able to tolerate any network transport related latencies. Functionality provided by this endpoint is similar to the /events end point.

The event bus on the Salt master exposes a large variety of things, notably when executions are started on the master and also when minions ultimately return their results. This URL provides a real-time window into a running Salt infrastructure. Uses websocket as the transport mechanism.

Exposes GET method to return websocket connections. All requests should include an auth token. A way to obtain obtain authentication tokens is shown below.

% curl -si localhost:8000/login \
    -H "Accept: application/json" \
    -d username='salt' \
    -d password='salt' \
    -d eauth='pam'

Which results in the response

{
    "return": [{
        "perms": [".*", "@runner", "@wheel"],
        "start": 1400556492.277421,
        "token": "d0ce6c1a37e99dcc0374392f272fe19c0090cca7",
        "expire": 1400599692.277422,
        "user": "salt",
        "eauth": "pam"
    }]
}

In this example the token returned is d0ce6c1a37e99dcc0374392f272fe19c0090cca7 and can be included in subsequent websocket requests (as part of the URL).

The event stream can be easily consumed via JavaScript:

// Note, you must be authenticated!

// Get the Websocket connection to Salt
var source = new Websocket('wss://localhost:8000/all_events/d0ce6c1a37e99dcc0374392f272fe19c0090cca7');

// Get Salt's "real time" event stream.
source.onopen = function() { source.send('websocket client ready'); };

// Other handlers
source.onerror = function(e) { console.debug('error!', e); };

// e.data represents Salt's "real time" event data as serialized JSON.
source.onmessage = function(e) { console.debug(e.data); };

// Terminates websocket connection and Salt's "real time" event stream on the server.
source.close();

Or via Python, using the Python module websocket-client for example. Or the tornado client.

# Note, you must be authenticated!

from websocket import create_connection

# Get the Websocket connection to Salt
ws = create_connection('wss://localhost:8000/all_events/d0ce6c1a37e99dcc0374392f272fe19c0090cca7')

# Get Salt's "real time" event stream.
ws.send('websocket client ready')


# Simple listener to print results of Salt's "real time" event stream.
# Look at https://pypi.python.org/pypi/websocket-client/ for more examples.
while listening_to_events:
    print ws.recv()       #  Salt's "real time" event data as serialized JSON.

# Terminates websocket connection and Salt's "real time" event stream on the server.
ws.close()

# Please refer to https://github.com/liris/websocket-client/issues/81 when using a self signed cert

Above examples show how to establish a websocket connection to Salt and activating real time updates from Salt's event stream by signaling websocket client ready.

Formatted Events¶

Exposes formatted "real-time" events from Salt's event bus on a websocket connection. It should be noted that "Real-time" here means these events are made available to the server as soon as any salt related action (changes to minions, new jobs etc) happens. Clients are however assumed to be able to tolerate any network transport related latencies. Functionality provided by this endpoint is similar to the /events end point.

The event bus on the Salt master exposes a large variety of things, notably when executions are started on the master and also when minions ultimately return their results. This URL provides a real-time window into a running Salt infrastructure. Uses websocket as the transport mechanism.

Formatted events parses the raw "real time" event stream and maintains a current view of the following:

• minions
• jobs

A change to the minions (such as addition, removal of keys or connection drops) or jobs is processed and clients are updated. Since we use salt's presence events to track minions, please enable presence_events and set a small value for the loop_interval in the salt master config file.

Exposes GET method to return websocket connections. All requests should include an auth token. A way to obtain obtain authentication tokens is shown below.

% curl -si localhost:8000/login \
    -H "Accept: application/json" \
    -d username='salt' \
    -d password='salt' \
    -d eauth='pam'

Which results in the response

{
    "return": [{
        "perms": [".*", "@runner", "@wheel"],
        "start": 1400556492.277421,
        "token": "d0ce6c1a37e99dcc0374392f272fe19c0090cca7",
        "expire": 1400599692.277422,
        "user": "salt",
        "eauth": "pam"
    }]
}

In this example the token returned is d0ce6c1a37e99dcc0374392f272fe19c0090cca7 and can be included in subsequent websocket requests (as part of the URL).

The event stream can be easily consumed via JavaScript:

// Note, you must be authenticated!

// Get the Websocket connection to Salt
var source = new Websocket('wss://localhost:8000/formatted_events/d0ce6c1a37e99dcc0374392f272fe19c0090cca7');

// Get Salt's "real time" event stream.
source.onopen = function() { source.send('websocket client ready'); };

// Other handlers
source.onerror = function(e) { console.debug('error!', e); };

// e.data represents Salt's "real time" event data as serialized JSON.
source.onmessage = function(e) { console.debug(e.data); };

// Terminates websocket connection and Salt's "real time" event stream on the server.
source.close();

Or via Python, using the Python module websocket-client for example. Or the tornado client.

# Note, you must be authenticated!

from websocket import create_connection

# Get the Websocket connection to Salt
ws = create_connection('wss://localhost:8000/formatted_events/d0ce6c1a37e99dcc0374392f272fe19c0090cca7')

# Get Salt's "real time" event stream.
ws.send('websocket client ready')


# Simple listener to print results of Salt's "real time" event stream.
# Look at https://pypi.python.org/pypi/websocket-client/ for more examples.
while listening_to_events:
    print ws.recv()       #  Salt's "real time" event data as serialized JSON.

# Terminates websocket connection and Salt's "real time" event stream on the server.
ws.close()

# Please refer to https://github.com/liris/websocket-client/issues/81 when using a self signed cert

Above examples show how to establish a websocket connection to Salt and activating real time updates from Salt's event stream by signaling websocket client ready.

Example responses¶

Minion information is a dictionary keyed by each connected minion's id (mid), grains information for each minion is also included.

Minion information is sent in response to the following minion events:

• connection drops

  • requires running manage.present periodically every loop_interval seconds

• minion addition

• minon removal

# Not all grains are shown
data: {
    "minions": {
        "minion1": {
            "id": "minion1",
            "grains": {
                "kernel": "Darwin",
                "domain": "local",
                "zmqversion": "4.0.3",
                "kernelrelease": "13.2.0"
            }
        }
    }
}

Job information is also tracked and delivered.

Job information is also a dictionary in which each job's information is keyed by salt's jid.

data: {
    "jobs": {
        "20140609153646699137": {
            "tgt_type": "glob",
            "jid": "20140609153646699137",
            "tgt": "*",
            "start_time": "2014-06-09T15:36:46.700315",
            "state": "complete",
            "fun": "test.ping",
            "minions": {
                "minion1": {
                    "return": true,
                    "retcode": 0,
                    "success": true
                }
            }
        }
    }
}

/¶

salt.netapi.rest_tornado.saltnado.SaltAPIHandler¶

alias of <Mock object at 0x2b49349e28d0>

/login¶

salt.netapi.rest_tornado.saltnado.SaltAuthHandler¶

alias of <Mock object at 0x2b49349e2f90>

/minions¶

salt.netapi.rest_tornado.saltnado.MinionSaltAPIHandler¶

alias of <Mock object at 0x2b493e6fb290>

/jobs¶

salt.netapi.rest_tornado.saltnado.JobsSaltAPIHandler¶

alias of <Mock object at 0x2b493e6fb0d0>

/run¶

salt.netapi.rest_tornado.saltnado.RunSaltAPIHandler¶

alias of <Mock object at 0x2b4936121550>

/events¶

salt.netapi.rest_tornado.saltnado.EventsSaltAPIHandler¶

alias of <Mock object at 0x2b4936121810>

/hook¶

salt.netapi.rest_tornado.saltnado.WebhookSaltAPIHandler¶

alias of <Mock object at 0x2b4936121cd0>