Module: ManageIQ::ApplianceConsole::Utilities

Defined in:
lib/manageiq/appliance_console/utilities.rb

Class Method Summary collapse

Class Method Details

.bail_if_db_connections(message) ⇒ Object 



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# File 'lib/manageiq/appliance_console/utilities.rb', line 47

def self.bail_if_db_connections(message)
  say("Checking for connections to the database...\n\n")
  if (conns = ManageIQ::ApplianceConsole::Utilities.db_connections - 1) > 0
    say("Warning: There are #{conns} existing connections to the database #{message}.\n\n")
    press_any_key
    raise MiqSignalError
  end
end

.db_connections ⇒ Object 



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# File 'lib/manageiq/appliance_console/utilities.rb', line 29

def self.db_connections
  # TODO: this is impossible to test right now because we need to shell out and run our rails app which isn't a direct dependency here.
  # We have the settings from the database_configuration, so we should pass them here and simplify this and make it testable.
  # Basically, we're doing a lot of work to run this 1 query:
  #   psql -U username -h host postgres -c "select count(*) from pg_stat_activity where datname = 'vmdb_production';"
  # We shouldn't need to subtract our 1 "connection" in "bail_if_db_connections" if we connect to the postgres db.
  code   = [
    "database ||= ActiveRecord::Base.configurations.configs_for(:env_name => Rails.env).first.database",
    "conn = ActiveRecord::Base.connection",
    "exit conn.client_connections.count { |c| c['database'] == database }"
  ]
  result = AwesomeSpawn.run("bin/rails runner",
                            :params => [code.join("; ")],
                            :chdir  => ManageIQ::ApplianceConsole::RAILS_ROOT
                           )
  Integer(result.exit_status)
end

.db_region ⇒ Object 



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# File 'lib/manageiq/appliance_console/utilities.rb', line 56

def self.db_region
  result = AwesomeSpawn.run(
    "bin/rails runner",
    :params => ["puts ApplicationRecord.my_region_number"],
    :chdir  => ManageIQ::ApplianceConsole::RAILS_ROOT
  )

  if result.failure?
    logger = ManageIQ::ApplianceConsole.logger
    logger.error "db_region: Failed to detect region_number"
    logger.error "Output: #{result.output.inspect}" unless result.output.blank?
    logger.error "Error:  #{result.error.inspect}"  unless result.error.blank?
    return
  end

  result.output.strip
end

.disk_usage(file = nil) ⇒ Object 



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# File 'lib/manageiq/appliance_console/utilities.rb', line 86

def self.disk_usage(file = nil)
  file_arg = file
  file_arg = "-l" if file.nil? || file == ""

  unless file_arg == "-l" || File.exist?(file)
    raise "file #{file} does not exist"
  end

  # Collect bytes
  result = AwesomeSpawn.run!("df", :params => ["-T", "-P", file_arg]).output.lines.each_with_object([]) do |line, array|
    lArray = line.strip.split(" ")
    next if lArray.length != 7
    fsname, type, total, used, free, used_percentage, mount_point = lArray
    next unless total =~ /[0-9]+/
    next if array.detect { |hh| hh[:filesystem] == fsname }

    array << {
      :filesystem         => fsname,
      :type               => type,
      :total_bytes        => total.to_i * 1024,
      :used_bytes         => used.to_i * 1024,
      :available_bytes    => free.to_i * 1024,
      :used_bytes_percent => used_percentage.chomp("%").to_i,
      :mount_point        => mount_point,
    }
  end

  # Collect inodes
  AwesomeSpawn.run!("df", :params => ["-T", "-P", "-i", file_arg]).output.lines.each do |line|
    lArray = line.strip.split(" ")
    next if lArray.length != 7
    fsname, _type, total, used, free, used_percentage, _mount_point = lArray
    next unless total =~ /[0-9]+/
    h = result.detect { |hh| hh[:filesystem] == fsname }
    next if h.nil?

    h[:total_inodes]        = total.to_i
    h[:used_inodes]         = used.to_i
    h[:available_inodes]    = free.to_i
    h[:used_inodes_percent] = used_percentage.chomp("%").to_i
  end
  result
end

.pg_status ⇒ Object 



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# File 'lib/manageiq/appliance_console/utilities.rb', line 74

def self.pg_status
  LinuxAdmin::Service.new(PostgresAdmin.service_name).running? ? "running" : "not running"
end

.rake(task, params, env = {}) ⇒ Object 



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# File 'lib/manageiq/appliance_console/utilities.rb', line 9

def self.rake(task, params, env = {})
  rake_run(task, params, env).success?
end

.rake_run(task, params, env = {}) ⇒ Object 



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# File 'lib/manageiq/appliance_console/utilities.rb', line 13

def self.rake_run(task, params, env = {})
  result = AwesomeSpawn.run("rake #{task}", :chdir => ManageIQ::ApplianceConsole::RAILS_ROOT, :params => params, :env => env)
  ManageIQ::ApplianceConsole.logger.error(result.error) if result.failure?
  result
end

.rake_run!(task, params, env = {}) ⇒ Object 



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# File 'lib/manageiq/appliance_console/utilities.rb', line 19

def self.rake_run!(task, params, env = {})
  result = rake_run(task, params, env)
  if result.failure?
    parsed_errors = result.error.split("\n").select { |line| line.match?(/^error: /i) }.join(', ')
    raise parsed_errors
  end

  result
end

.test_network ⇒ Object 



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# File 'lib/manageiq/appliance_console/utilities.rb', line 78

def self.test_network
  require 'net/ping'
  say("Test Network Configuration\n\n")
  while (h = ask_for_ip_or_hostname_or_none("hostname, ip address, or none to continue").presence)
    say("  " + h + ': ' + (Net::Ping::External.new(h).ping ? 'Success!' : 'Failure, Check network settings and IP address or hostname provided.'))
  end
end