require 'json'
JSON.parse(input)['result'].map do |h|
[h['instanceName'], h['status']]
end.to_h
#⇒ {
# "920_ENT_6017" => "RUNNING",
# "920_JAS_8082" => "RUNNING",
# "AIS_0005" => "RUNNING",
# "DEN00KNL_DEP_920" => "RUNNING",
# "ENT6547" => "STOPPED",
# "HTML_8792" => "RUNNING",
# "RTE_0004" => "RUNNING",
# "ent4563" => "STOPPED",
# "ent6021" => "RUNNING",
# "ent6060_Win" => "RUNNING",
# "ent6327" => "STOPPED",
# "ent6363" => "STOPPED",
# "ent790" => "STOPPED",
# "ent7943" => "STOPPED",
# "home" => "RUNNING",
# "wls1213" => "RUNNING"
# }
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solved how to retrieve JSON object from the JSON array in ruby