Ravn::Tactical::

Diagnostics module

Extended With

Loggability

Module functions for gathering compute pack diagnostic information.

Constants

NORMAL_PROC_STATUSES: Statuses that processes might be in

Public Instance Methods

bde_running?()

Returns true if the BDE is running.

   # File lib/ravn/tactical/diagnostics.rb
48 def bde_running?
49     bde_procs = self.find_processes( cmdline: 'ravn/bde' )
50     self.log.debug "Found %d BDE processes." % [ bde_procs.size ]
51 
52     return self.processes_okay?( bde_procs )
53 end

broker_interface_exists?()

Returns true if the network interface for the broker exists.

   # File lib/ravn/tactical/diagnostics.rb
66 def broker_interface_exists?
67     configured_interface = Ravn::Net.interface or return false
68 
69     iface = Socket.getifaddrs.find do |interface|
70         interface.name == configured_interface
71     end
72 
73     return iface ? true : false
74 end

executor_running?()

Returns true if the Executor is running.

   # File lib/ravn/tactical/diagnostics.rb
57 def executor_running?
58     executor_procs = self.find_processes( cmdline: 'ravn executor' )
59     self.log.debug "Found executor processes: %p." % [ executor_procs ]
60 
61     return self.processes_okay?( executor_procs )
62 end

find_processes( cmdline:, name: 'ruby' )

Find all processes with the given name and whose command contains cmdline.

   # File lib/ravn/tactical/diagnostics.rb
29 def find_processes( cmdline:, name: 'ruby' )
30     processes = Sys::ProcTable.ps
31 
32     return processes.select do |proc|
33         proc.name == name && proc.cmdline.include?( cmdline )
34     end
35 end

processes_okay?( processes, count: 1..1 )

Return true if the given array of processes has a size within the count and are all in a good state.

   # File lib/ravn/tactical/diagnostics.rb
40 def processes_okay?( processes, count: 1..1 )
41     return false unless count.cover?( processes.size )
42 
43     return processes.all? {|process| NORMAL_PROC_STATUSES.include?(process.state) }
44 end