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From "Sergey Antonov (Jira)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-12225) Add enum for cluster state
Date Tue, 24 Sep 2019 13:07:00 GMT
Sergey Antonov created IGNITE-12225:
---------------------------------------

             Summary: Add enum for cluster state
                 Key: IGNITE-12225
                 URL: https://issues.apache.org/jira/browse/IGNITE-12225
             Project: Ignite
          Issue Type: Improvement
            Reporter: Sergey Antonov
            Assignee: Sergey Antonov
             Fix For: 2.8


We have 3 cluster states at the moment: inactive, active, read-only. 

For getting current cluster state and changing them {{IgniteCluster}} has methods:
* {{boolean active()}}, {{void active(boolean active)}} - for cluster activation/deactivation

* {{boolean readOnly()}}, {{void readOnly(boolean readOnly)}} - for enabling/disabling read-only
mode.

Also we have control.sh commans for changing cluster state:
* {{--activate}}
* {{--deactivate}}
* {{--read-only-on}}
* {{--read-only-off}}

For me current API looks unuseful. My proposal:
# Create enum {{ClusterState}} with values {{ACTIVE}}, {{INACTIVE}}, {{READ-ONLY}}.
# Add methods to {{IgniteCluster}}:
## {{ClusterState state()}} returns current cluster state
## {{void state(ClusterState newState)}} changes cluster state to {{newState}} state
## Mark as deprecated the following methods in {{IgniteCluster}}: {{boolean active()}}, {{void
active(boolean active)}}, 
## Add new command to control.sh: {{control.sh --set-state (ACTIVE|INACTIVE|READ-ONLY)}}
## Add warn message that command is depricated in control.sh. Commands: {{--activate}}, {{--deactivate}},
{{--read-only-on}}, {{--read-only-off}}




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