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feat: #236 consul graceful leave #237

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feat: #236 consul graceful leave #237

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2b8dd2c
feat: implements issue #236
Oct 6, 2018
c306830
pep8
Oct 6, 2018
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21 changes: 21 additions & 0 deletions consul/base.py
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Original file line number Diff line number Diff line change
Expand Up @@ -358,6 +358,7 @@ class Event(object):
practice, this means you cannot rely on the order of message delivery.
An advantage however is that events can still be used even in the
absence of server nodes or during an outage."""

def __init__(self, agent):
self.agent = agent

Expand Down Expand Up @@ -465,6 +466,7 @@ class KV(object):
used to store service configurations or other meta data in a simple
way.
"""

def __init__(self, agent):
self.agent = agent

Expand Down Expand Up @@ -662,6 +664,7 @@ class Txn(object):
The Transactions endpoints manage updates or fetches of multiple keys
inside a single, atomic transaction.
"""

def __init__(self, agent):
self.agent = agent

Expand Down Expand Up @@ -697,6 +700,7 @@ class Agent(object):
takes on the burden of registering with the Catalog and performing
anti-entropy to recover from outages.
"""

def __init__(self, agent):
self.agent = agent
self.service = Consul.Agent.Service(agent)
Expand Down Expand Up @@ -806,6 +810,22 @@ def force_leave(self, node):
return self.agent.http.put(
CB.bool(), '/v1/agent/force-leave/%s' % node)

def leave(self, node):
"""
This endpoint instructs the agent to graceful leave a node.
It is used to ensure other nodes see the agent as "left"
instead of "failed". Nodes that leave will not attempt to
re-join the cluster on restarting with a snapshot. For nodes
in server mode, the node is removed from the Raft peer
set in a graceful manner. This is critical, as in certain
situations a non-graceful leave can affect cluster availability.

*node* is the node to change state for.
"""

return self.agent.http.put(
CB.bool(), '/v1/agent/leave/%s' % node)

class Service(object):
def __init__(self, agent):
self.agent = agent
Expand Down Expand Up @@ -2111,6 +2131,7 @@ class Status(object):
The Status endpoints are used to get information about the status
of the Consul cluster.
"""

def __init__(self, agent):
self.agent = agent

Expand Down