137 lines
2.5 KiB
Ruby
137 lines
2.5 KiB
Ruby
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require 'fileutils'
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require 'pp'
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module Qasim ; module Map; class Generic
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attr_reader :links
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attr_reader :filename
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attr_reader :name
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def initialize app_config, params
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@app_config = app_config
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@links = params[:links]
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params.delete :links
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@filename = params[:filename]
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params.delete :filename
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@name = File.basename @filename, '.map'
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@params = params
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pp @params
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end
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# Return a list of options for this map type
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#
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# Format :
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# Hash of (name:Symbol * [value:Object, optional:Boolean])
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def self.parameters
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return {
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map_name: [nil , true],
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map_enable: [true, false],
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map_mountpoint: [nil, true]
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}
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end
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#
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# Test if mount list include some path & fs type
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#
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def mount_include? fs_type, local_path
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f = File.open("/proc/mounts")
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fs_mounts = (f.readlines.select do |line|
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line =~ /\s+#{fs_type}\s+/
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end).map do |line|
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line.split(/\s+/)[1]
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end
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f.close
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fs_mounts.include? local_path
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end
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#
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# Test if map is connected / mounted
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#
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def mounted?
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score = @links.size
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@links.each do |name, remotepath|
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local_path = File.join @app_config.mount_dir, name
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if mount_include?(self.mount_id, local_path) then
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score -= 1
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end
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end
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# FIXME: handle the case of partial mounts (for remount/umount)
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return true if score == 0
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return false
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end
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#
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# Connect all maps
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#
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def mount &block
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@links.each do |name, remotepath|
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mount_link(name, remotepath)
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if block_given? then
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yield name, cmd, cmd_args
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else
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system cmd, cmd_args
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if $?.exitstatus != 0 then
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raise ConnectError, self
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end
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end
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end
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end
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#
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# Disconnect all maps
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#
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def umount &block
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@links.each do |name, remotepath|
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localpath = File.join ENV['HOME'], "mnt", name
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cmd = "fusermount"
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cmd_args = [
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"-u", #umount
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"-z" ,#lazy
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localpath ]
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if block_given? then
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yield name, cmd, cmd_args
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else
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system cmd, cmd_args
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if $?.exitstatus != 0 then
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raise ConnectError, self
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end
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end
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end
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end
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#
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# Connect a single map
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#
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# MUST BE IMPLEMENTED BY SUBCLASSES
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#
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def mount_link name, remotepath
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raise NotImplementedError
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end
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#
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# Return the name of fuse helper (show in mount list)
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#
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# MUST BE IMPLEMENTED BY SUBCLASSES
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#
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def mount_id
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raise NotImplementedError
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end
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#
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# Test map liveness (connected & working)
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#
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# MUST BE IMPLEMENTED BY SUBCLASSES
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#
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def alive?
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raise NotImplementedError
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end
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end ; end ; end
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