neoctl command on disconnected nodes.


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getConnection().


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Merge and simplify admin handler classes to hanle just 2 cases: expected answer, and the rest. This fixes cluster state notification handling (which used to only log a line because the hadler method was defined twice...).


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in NeoCluster class.


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The existing code was exiting election loop too early, as there might not have been an identified connection to primary master (ask/answerPrimaryMaster is quicker than ask/answerPrimaryMaster + request/acceptNodeIdentification).
The correct way is to stop waiting for connections to nodes other than primary master, and this can be done in answerPrimaryMaster.


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No need to cleanum NodeManager content when connection to primary master is closed, since we will anyway flush it when trying to reconnect to a primary master.


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Change primary master state to RUNNING, as we are indeed connected to it (and it won't notify of its own state).


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Add a new Node state: UNKNOWN_STATE. In this state, nodes are supposed to be RUNNING, but there was no successful attemp to connect to them yet, nor any notification that they were running. This is especially useful in tests to avoid a stopped node to appear as RUNNING until receiving a notification that it is in fact DOWN.


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others test cases.


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processes.


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Make all election handler classes inherit from ElectionHandler: master will send a notification to all nodes that a new master appeared, which includes the new master itself, so it must expect a NotifyNodeInformation packet.


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Add extra checks when stopping primary master: now check that current primary master is None before expecting a new one to appear.


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Hence, don't add non-running nodes to unconnected_master_node_set before each election attempt.
Preserve negotiating_master_node_set between attemps to reuse possibly pending connections.


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- Add expect* methods, to allow continuing as soon as a condition is encountered.
- Define master node count as a constant.
- Make getMasterNodeList able to filter on node state.


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case. Fix dirty work on getTwoIDs() and replace while loops by a simple check
and two ordered UUIDs are needed.


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from NeoTestBase.


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executed each time a transaction is stored and only if the last OID has changed.


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When primary master node gets disconnected, use NodeManager.update method with DOWN_STATE, so that it gets removed.
Clear node manager content and re-add all master node given in the configuration before trying to reconnect to primary master.


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Also log nodes known by address.
Trigger a node manager log when it gets updated.


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PrimaryMasterHandler must not be applied to the listening connection, but only to the one remaining client connection (ie, the connection we established to the primary master node).
All other connections (listening & server) must get IdentificationHandler (actualy only using handleAskPrimaryMaster, so a more restricted handler would better fit).


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file. New masters will be registered by an admin and their config updated to
ensure no more than one master could run concurrently when they restart without
known each other.


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Make connection.py call connectionAccepted with the new connection as parameter.
Change connectionAccepted prototype, as fewer parameters are needed now that "conn" contains them.


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Apply SecondaryMasterHandler to all established connections after having set the identificationHandler on the listening connection.
This fixes primary master node not notifying secondary master node disconnections.


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Instead of stopping the whole cluster, only stop masters. This avoids disconnecting neoctl from admin process, as it will not reconnect (to be tested separately).


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