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|
#
# Author:: Stephen Delano (<stephen@opscode.com>)
# Author:: Seth Falcon (<seth@opscode.com>)
# Author:: John Keiser (<jkeiser@ospcode.com>)
# Copyright:: Copyright 2010-2011 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/config'
require 'chef/mash'
require 'chef/mixin/params_validate'
require 'chef/mixin/from_file'
require 'chef/couchdb'
require 'chef/index_queue'
require 'chef/version_constraint'
class Chef
class Environment
DEFAULT = "default"
include Chef::Mixin::ParamsValidate
include Chef::Mixin::FromFile
include Chef::IndexQueue::Indexable
COMBINED_COOKBOOK_CONSTRAINT = /(.+)(?:[\s]+)((?:#{Chef::VersionConstraint::OPS.join('|')})(?:[\s]+).+)$/.freeze
attr_accessor :couchdb, :couchdb_rev
attr_reader :couchdb_id
DESIGN_DOCUMENT = {
"version" => 1,
"language" => "javascript",
"views" => {
"all" => {
"map" => <<-EOJS
function(doc) {
if (doc.chef_type == "environment") {
emit(doc.name, doc);
}
}
EOJS
},
"all_id" => {
"map" => <<-EOJS
function(doc) {
if (doc.chef_type == "environment") {
emit(doc.name, doc.name);
}
}
EOJS
}
}
}
def initialize(couchdb=nil)
@name = ''
@description = ''
@default_attributes = Mash.new
@override_attributes = Mash.new
@cookbook_versions = Hash.new
@couchdb_rev = nil
@couchdb_id = nil
@couchdb = couchdb || Chef::CouchDB.new
end
def couchdb_id=(value)
@couchdb_id = value
self.index_id = value
end
def chef_server_rest
Chef::REST.new(Chef::Config[:chef_server_url])
end
def self.chef_server_rest
Chef::REST.new(Chef::Config[:chef_server_url])
end
def name(arg=nil)
set_or_return(
:name,
arg,
{ :regex => /^[\-[:alnum:]_]+$/, :kind_of => String }
)
end
def description(arg=nil)
set_or_return(
:description,
arg,
:kind_of => String
)
end
def default_attributes(arg=nil)
set_or_return(
:default_attributes,
arg,
:kind_of => Hash
)
end
def default_attributes=(attrs)
default_attributes(attrs)
end
def override_attributes(arg=nil)
set_or_return(
:override_attributes,
arg,
:kind_of => Hash
)
end
def override_attributes=(attrs)
override_attributes(attrs)
end
def cookbook_versions(arg=nil)
set_or_return(
:cookbook_versions,
arg,
{
:kind_of => Hash,
:callbacks => {
"should be a valid set of cookbook version requirements" => lambda { |cv| Chef::Environment.validate_cookbook_versions(cv) }
}
}
)
end
def cookbook(cookbook, version)
validate({
:version => version
},{
:version => {
:callbacks => { "should be a valid version requirement" => lambda { |v| Chef::Environment.validate_cookbook_version(v) } }
}
})
@cookbook_versions[cookbook] = version
end
def to_hash
result = {
"name" => @name,
"description" => @description,
"cookbook_versions" => @cookbook_versions,
"json_class" => self.class.name,
"chef_type" => "environment",
"default_attributes" => @default_attributes,
"override_attributes" => @override_attributes
}
result["_rev"] = couchdb_rev if couchdb_rev
result
end
def to_json(*a)
to_hash.to_json(*a)
end
def update_from!(o)
description(o.description)
cookbook_versions(o.cookbook_versions)
default_attributes(o.default_attributes)
override_attributes(o.override_attributes)
self
end
def update_attributes_from_params(params)
unless params[:default_attributes].nil? || params[:default_attributes].size == 0
default_attributes(Chef::JSONCompat.from_json(params[:default_attributes]))
end
unless params[:override_attributes].nil? || params[:override_attributes].size == 0
override_attributes(Chef::JSONCompat.from_json(params[:override_attributes]))
end
end
def update_from_params(params)
# reset because everything we need will be in the params, this is necessary because certain constraints
# may have been removed in the params and need to be removed from cookbook_versions as well.
bkup_cb_versions = cookbook_versions
cookbook_versions(Hash.new)
valid = true
begin
name(params[:name])
rescue Chef::Exceptions::ValidationFailed => e
invalid_fields[:name] = e.message
valid = false
end
description(params[:description])
unless params[:cookbook_version].nil?
params[:cookbook_version].each do |index, cookbook_constraint_spec|
unless (cookbook_constraint_spec.nil? || cookbook_constraint_spec.size == 0)
valid = valid && update_cookbook_constraint_from_param(index, cookbook_constraint_spec)
end
end
end
update_attributes_from_params(params)
valid = validate_required_attrs_present && valid
cookbook_versions(bkup_cb_versions) unless valid # restore the old cookbook_versions if valid is false
valid
end
def update_cookbook_constraint_from_param(index, cookbook_constraint_spec)
valid = true
md = cookbook_constraint_spec.match(COMBINED_COOKBOOK_CONSTRAINT)
if md.nil? || md[2].nil?
valid = false
add_cookbook_constraint_error(index, cookbook_constraint_spec)
elsif self.class.validate_cookbook_version(md[2])
cookbook_versions[md[1]] = md[2]
else
valid = false
add_cookbook_constraint_error(index, cookbook_constraint_spec)
end
valid
end
def add_cookbook_constraint_error(index, cookbook_constraint_spec)
invalid_fields[:cookbook_version] ||= {}
invalid_fields[:cookbook_version][index] = "#{cookbook_constraint_spec} is not a valid cookbook constraint"
end
def invalid_fields
@invalid_fields ||= {}
end
def validate_required_attrs_present
if name.nil? || name.size == 0
invalid_fields[:name] ||= "name cannot be empty"
false
else
true
end
end
def self.json_create(o)
environment = new
environment.name(o["name"])
environment.description(o["description"])
environment.cookbook_versions(o["cookbook_versions"])
environment.default_attributes(o["default_attributes"])
environment.override_attributes(o["override_attributes"])
environment.couchdb_rev = o["_rev"] if o.has_key?("_rev")
environment.couchdb_id = o["_id"] if o.has_key?("_id")
environment
end
def self.cdb_list(inflate=false, couchdb=nil)
es = (couchdb || Chef::CouchDB.new).list("environments", inflate)
lookup = (inflate ? "value" : "key")
es["rows"].collect { |e| e[lookup] }
end
def self.list(inflate=false)
if inflate
response = Hash.new
Chef::Search::Query.new.search(:environment) do |e|
response[e.name] = e unless e.nil?
end
response
else
chef_server_rest.get_rest("environments")
end
end
def self.cdb_load(name, couchdb=nil)
(couchdb || Chef::CouchDB.new).load("environment", name)
end
def self.load(name)
chef_server_rest.get_rest("environments/#{name}")
end
def self.exists?(name, couchdb)
begin
self.cdb_load(name, couchdb)
rescue Chef::Exceptions::CouchDBNotFound
nil
end
end
def cdb_destroy
couchdb.delete("environment", @name, couchdb_rev)
end
def destroy
chef_server_rest.delete_rest("environments/#{@name}")
end
def cdb_save
self.couchdb_rev = couchdb.store("environment", @name, self)["rev"]
end
def save
begin
chef_server_rest.put_rest("environments/#{@name}", self)
rescue Net::HTTPServerException => e
raise e unless e.response.code == "404"
chef_server_rest.post_rest("environments", self)
end
self
end
def create
chef_server_rest.post_rest("environments", self)
self
end
# Set up our CouchDB design document
def self.create_design_document(couchdb=nil)
(couchdb || Chef::CouchDB.new).create_design_document("environments", DESIGN_DOCUMENT)
end
# Loads the set of Chef::CookbookVersion objects available to a given environment
# === Returns
# Hash
# i.e.
# {
# "cookbook_name" => [ Chef::CookbookVersion ... ] ## the array of CookbookVersions is sorted highest to lowest
# }
#
# There will be a key for every cookbook. If no CookbookVersions
# are available for the specified environment the value will be an
# empty list.
#
def self.cdb_load_filtered_cookbook_versions(name, couchdb=nil)
version_constraints = cdb_load(name, couchdb).cookbook_versions.inject({}) {|res, (k,v)| res[k] = Chef::VersionConstraint.new(v); res}
# inject all cookbooks into the hash while filtering out restricted versions, then sort the individual arrays
cookbook_list = Chef::CookbookVersion.cdb_list(true, couchdb)
filtered_list = cookbook_list.inject({}) do |res, cookbook|
# FIXME: should cookbook.version return a Chef::Version?
version = Chef::Version.new(cookbook.version)
requirement_satisfied = version_constraints.has_key?(cookbook.name) ? version_constraints[cookbook.name].include?(version) : true
# we want a key for every cookbook, even if no versions are available
res[cookbook.name] ||= []
res[cookbook.name] << cookbook if requirement_satisfied
res
end
sorted_list = filtered_list.inject({}) do |res, (cookbook_name, versions)|
res[cookbook_name] = versions.sort.reverse
res
end
sorted_list
end
# Like +cdb_load_filtered_cookbook_versions+, loads the set of
# cookbooks available in a given environment. The difference is that
# this method will load Chef::MinimalCookbookVersion objects that
# contain only the information necessary for solving a cookbook
# collection for a given run list. The user of this method must call
# Chef::MinimalCookbookVersion.load_full_versions_of() after solving
# the cookbook collection to get the full objects.
# === Returns
# Hash
# i.e.
# {
# "cookbook_name" => [ Chef::CookbookVersion ... ] ## the array of CookbookVersions is sorted highest to lowest
# }
#
# There will be a key for every cookbook. If no CookbookVersions
# are available for the specified environment the value will be an
# empty list.
def self.cdb_minimal_filtered_versions(name, couchdb=nil)
version_constraints = cdb_load(name, couchdb).cookbook_versions.inject({}) {|res, (k,v)| res[k] = Chef::VersionConstraint.new(v); res}
# inject all cookbooks into the hash while filtering out restricted versions, then sort the individual arrays
cookbook_list = Chef::MinimalCookbookVersion.load_all(couchdb)
filtered_list = cookbook_list.inject({}) do |res, cookbook|
# FIXME: should cookbook.version return a Chef::Version?
version = Chef::Version.new(cookbook.version)
requirement_satisfied = version_constraints.has_key?(cookbook.name) ? version_constraints[cookbook.name].include?(version) : true
# we want a key for every cookbook, even if no versions are available
res[cookbook.name] ||= []
res[cookbook.name] << cookbook if requirement_satisfied
res
end
sorted_list = filtered_list.inject({}) do |res, (cookbook_name, versions)|
res[cookbook_name] = versions.sort.reverse
res
end
sorted_list
end
def self.cdb_load_filtered_recipe_list(name, couchdb=nil)
cdb_load_filtered_cookbook_versions(name, couchdb).map do |cb_name, cb|
if cb.empty? # no available versions
[] # empty list elided with flatten
else
latest_version = cb.first
latest_version.recipe_filenames_by_name.keys.map do |recipe|
case recipe
when DEFAULT
cb_name
else
"#{cb_name}::#{recipe}"
end
end
end
end.flatten
end
def self.load_filtered_recipe_list(environment)
chef_server_rest.get_rest("environments/#{environment}/recipes")
end
def to_s
@name
end
def self.validate_cookbook_versions(cv)
return false unless cv.kind_of?(Hash)
cv.each do |cookbook, version|
return false unless Chef::Environment.validate_cookbook_version(version)
end
true
end
def self.validate_cookbook_version(version)
begin
Chef::VersionConstraint.new version
true
rescue ArgumentError
false
end
end
def self.create_default_environment(couchdb=nil)
couchdb = couchdb || Chef::CouchDB.new
begin
Chef::Environment.cdb_load('_default', couchdb)
rescue Chef::Exceptions::CouchDBNotFound
env = Chef::Environment.new(couchdb)
env.name '_default'
env.description 'The default Chef environment'
env.cdb_save
end
end
end
end
|