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#
# Author:: Adam Jacob (<adam@opscode.com>)
# Copyright:: Copyright (c) 2008 Opscode, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require 'chef/provider/file'
require 'chef/rest'
require 'uri'
require 'tempfile'
require 'net/https'
class Chef
class Provider
class RemoteFile < Chef::Provider::File
def load_current_resource
@current_resource = Chef::Resource::RemoteFile.new(@new_resource.name)
super
end
def action_create
Chef::Log.debug("#{@new_resource} checking for changes")
if current_resource_matches_target_checksum?
Chef::Log.debug("#{@new_resource} checksum matches target checksum (#{@new_resource.checksum}) - not updating")
else
fileuri = URI.parse(@new_resource.source)
if local_file?(fileuri)
raw_file = read_local_file(fileuri)
else
rest = Chef::REST.new(@new_resource.source, nil, nil, http_client_opts)
raw_file = rest.streaming_request(rest.create_url(@new_resource.source), {})
end
if matches_current_checksum?(raw_file)
Chef::Log.debug "#{@new_resource} target and source checksums are the same - not updating"
else
description = []
description << "copy file downloaded from #{@new_resource.source} into #{@new_resource.path}"
description << diff_current(raw_file.path)
converge_by(description) do
backup_new_resource
FileUtils.cp raw_file.path, @new_resource.path
Chef::Log.info "#{@new_resource} updated"
raw_file.close!
end
# whyrun mode cleanup - the temp file will never be used,
# so close/unlink it here.
if whyrun_mode?
raw_file.close!
end
end
end
set_all_access_controls
end
def current_resource_matches_target_checksum?
@new_resource.checksum && @current_resource.checksum && @current_resource.checksum =~ /^#{Regexp.escape(@new_resource.checksum)}/
end
def local_file?(uri)
true if uri.scheme == "file"
end
def read_local_file(uri)
tf = Tempfile.open("chef-rest")
::File.open(uri.path, "rb") {|io| tf << io.read}
tf.close
end
def matches_current_checksum?(candidate_file)
Chef::Log.debug "#{@new_resource} checking for file existence of #{@new_resource.path}"
if ::File.exists?(@new_resource.path)
Chef::Log.debug "#{@new_resource} file exists at #{@new_resource.path}"
@new_resource.checksum(checksum(candidate_file.path))
Chef::Log.debug "#{@new_resource} target checksum: #{@current_resource.checksum}"
Chef::Log.debug "#{@new_resource} source checksum: #{@new_resource.checksum}"
@new_resource.checksum == @current_resource.checksum
else
Chef::Log.debug "#{@new_resource} creating #{@new_resource.path}"
false
end
end
def backup_new_resource
if ::File.exists?(@new_resource.path)
Chef::Log.debug "#{@new_resource} checksum changed from #{@current_resource.checksum} to #{@new_resource.checksum}"
backup @new_resource.path
end
end
def source_file(source, current_checksum, &block)
if absolute_uri?(source)
fetch_from_uri(source, &block)
elsif !Chef::Config[:solo]
fetch_from_chef_server(source, current_checksum, &block)
else
fetch_from_local_cookbook(source, &block)
end
end
def http_client_opts
opts={}
# CHEF-3140
# 1. If it's already compressed, trying to compress it more will
# probably be counter-productive.
# 2. Some servers are misconfigured so that you GET $URL/file.tgz but
# they respond with content type of tar and content encoding of gzip,
# which tricks Chef::REST into decompressing the response body. In this
# case you'd end up with a tar archive (no gzip) named, e.g., foo.tgz,
# which is not what you wanted.
if @new_resource.path =~ /gz$/ or @new_resource.source =~ /gz$/
opts[:disable_gzip] = true
end
opts
end
private
def absolute_uri?(source)
URI.parse(source).absolute?
rescue URI::InvalidURIError
false
end
def managing_content?
return true if @new_resource.checksum
return true if !@new_resource.source.nil? && @action != :create_if_missing
false
end
end
end
end
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