Class: Fig::Lock

Inherits:
Object
  • Object
show all
Includes:
Log
Defined in:
lib/fig/lock.rb,
lib/fig/lock.rb,
lib/fig/lock/version.rb

Defined Under Namespace

Modules: Log Classes: DockerClient

Constant Summary collapse

VERSION = 
"0.0.11"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Log

#log, log

Constructor Details

#initialize(opts) ⇒ Lock

Returns a new instance of Lock.



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# File 'lib/fig/lock.rb', line 26

def initialize(opts)
opts = merge_opts(opts)
@file = opts[:file]
@lock_file = lock_file_name(file)

fail "File #{file} does not exist" unless File.exists?(file)
fail "File #{file} is a directory" if File.directory?(file)
end

Instance Attribute Details

#file ⇒ Object (readonly)

Returns the value of attribute file.



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# File 'lib/fig/lock.rb', line 24

def file
  @file
end

#lock_file ⇒ Object (readonly)

Returns the value of attribute lock_file.



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# File 'lib/fig/lock.rb', line 24

def lock_file
  @lock_file
end

Class Method Details

.install(opts = {}) ⇒ Object 



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# File 'lib/fig/lock.rb', line 9

def install(opts={})
Lock.new(opts).install
end

.update(opts = {}) ⇒ Object 



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# File 'lib/fig/lock.rb', line 13

def update(opts={})
Lock.new(opts).update
end

Instance Method Details

#install ⇒ Object

Install images from a lock file on the local system



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# File 'lib/fig/lock.rb', line 36

def install
if File.exists?(lock_file)
log.info "Lock file #{lock_file} found."
fetch_images(YAML.load(File.read(lock_file)))
else
log.info "No lock file found."
update
end
end

#update ⇒ Object

Update an existing lock file, or create if none exists



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# File 'lib/fig/lock.rb', line 47

def update
log.info "Generating lock file for #{file} ..."
hash = YAML.load(File.read(file))
select_latest(hash)

log.info "Writing lock file #{lock_file} ..."
File.write(lock_file, hash.to_yaml)

log.info "Done."
end