Sandor Molnar created KNOX-2190:
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Summary: Cloudera Manager integration - advance service discovery
handling on topology level
Key: KNOX-2190
URL: https://issues.apache.org/jira/browse/KNOX-2190
Project: Apache Knox
Issue Type: New Feature
Components: Server
Affects Versions: 1.4.0
Reporter: Sandor Molnar
Assignee: Sandor Molnar
Fix For: 1.4.0
With KNOX-2186, Knox is capable of processing a properties file
({{auto-discovery-advanced-configuration.properties}}) which CM generates with
a list of boolean flags of enabled services. These boolean flags are valid to
all descriptors (topologies) within all topologies listed in
{{gateway.auto.discovery.expected.topology.names}}.
It'd be beneficial to refine this behavior the following way:
- the monitor would handle different properties file with
{{auto-discovery-advanced-configuration}} file name prefix (it's also
recommended that whoever generates these files the file name suffix would be
the topology name. For instance:
{{auto-discovery-advanced-configuration-topology1.properties}}).
- a new property should be introduced in each property file:
{{gateway.auto.discovery.topology.name}} to indicate the topology name (to not
to rely on the file name suffix)
- keep the existing list of boolean flags of service enablement
- the existing {{gateway.auto.discovery.expected.topology.names}} property
should be removed (it's no longer useful)
The monitor then builds a map of properties where the key is the topology name
and the value is a list of boolean flags (if service X is enabled or not) and
notifies all \{{AdvancedServiceDiscoveryConfigChangeListener}}s when a change
is detected.
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