class Chef::Cookbook::RemoteFileVendor
Chef::Cookbook::RemoteFileVendor
¶ ↑
This FileVendor
loads files by either fetching them from the local cache, or if not available, loading them from the remote server.
Attributes
cookbook_name[R]
rest[R]
Public Class Methods
new(manifest, rest)
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# File lib/chef/cookbook/remote_file_vendor.rb, line 30 def initialize(manifest, rest) @manifest = manifest @cookbook_name = @manifest.name @rest = rest end
Public Instance Methods
get_filename(filename)
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Implements abstract base's requirement. It looks in the Chef::Config.cookbook_path file hierarchy for the requested file.
# File lib/chef/cookbook/remote_file_vendor.rb, line 39 def get_filename(filename) if filename =~ %r{([^/]+)/(.+)$} segment = $1 else raise "get_filename: Cannot determine segment/filename for incoming filename #{filename}" end raise "No such segment #{segment} in cookbook #{@cookbook_name}" unless @manifest.files_for(segment) found_manifest_record = @manifest.files_for(segment).find { |manifest_record| manifest_record[:path] == filename } raise "No such file #{filename} in #{@cookbook_name}" unless found_manifest_record cache_filename = File.join("cookbooks", @cookbook_name, found_manifest_record["path"]) # update valid_cache_entries so the upstream cache cleaner knows what # we've used. validate_cached_copy(cache_filename) current_checksum = nil if Chef::FileCache.key?(cache_filename) current_checksum = Chef::CookbookVersion.checksum_cookbook_file(Chef::FileCache.load(cache_filename, false)) end # If the checksums are different between on-disk (current) and on-server # (remote, per manifest), do the update. This will also execute if there # is no current checksum. if current_checksum != found_manifest_record["checksum"] raw_file = @rest.streaming_request(found_manifest_record[:url]) Chef::Log.trace("Storing updated #{cache_filename} in the cache.") Chef::FileCache.move_to(raw_file.path, cache_filename) else Chef::Log.trace("Not fetching #{cache_filename}, as the cache is up to date.") Chef::Log.trace("Current checksum: #{current_checksum}; manifest checksum: #{found_manifest_record["checksum"]})") end # return the filename, not the contents (second argument= false) Chef::FileCache.load(cache_filename, false) end
validate_cached_copy(cache_filename)
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# File lib/chef/cookbook/remote_file_vendor.rb, line 79 def validate_cached_copy(cache_filename) CookbookCacheCleaner.instance.mark_file_as_valid(cache_filename) end