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-rw-r--r--lib/leap_cli/config/environment.rb180
1 files changed, 180 insertions, 0 deletions
diff --git a/lib/leap_cli/config/environment.rb b/lib/leap_cli/config/environment.rb
new file mode 100644
index 00000000..398fd023
--- /dev/null
+++ b/lib/leap_cli/config/environment.rb
@@ -0,0 +1,180 @@
+#
+# All configurations files can be isolated into separate environments.
+#
+# Each config json in each environment inherits from the default environment,
+# which in term inherits from the "_base_" environment:
+#
+# _base_ -- base provider in leap_platform
+# '- default -- environment in provider dir when no env is set
+# '- production -- example environment
+#
+
+module LeapCli; module Config
+
+ class Environment
+ # the String name of the environment
+ attr_accessor :name
+
+ # the shared Manager object
+ attr_accessor :manager
+
+ # hashes of {name => Config::Object}
+ attr_accessor :services, :tags, :partials
+
+ # a Config::Provider
+ attr_accessor :provider
+
+ # a Config::Object
+ attr_accessor :common
+
+ # shared, non-inheritable
+ def nodes; @@nodes; end
+ def secrets; @@secrets; end
+
+ def initialize(manager, name, search_dir, parent, options={})
+ @@nodes ||= nil
+ @@secrets ||= nil
+
+ @manager = manager
+ @name = name
+
+ load_provider_files(search_dir, options)
+
+ if parent
+ @services.inherit_from! parent.services, self
+ @tags.inherit_from! parent.tags , self
+ @partials.inherit_from! parent.partials, self
+ @common.inherit_from! parent.common
+ @provider.inherit_from! parent.provider
+ end
+
+ if @provider
+ @provider.set_env(name)
+ @provider.validate!
+ end
+ end
+
+ def load_provider_files(search_dir, options)
+ #
+ # load empty environment if search_dir doesn't exist
+ #
+ if search_dir.nil? || !Dir.exist?(search_dir)
+ @services = Config::ObjectList.new
+ @tags = Config::ObjectList.new
+ @partials = Config::ObjectList.new
+ @provider = Config::Provider.new
+ @common = Config::Object.new
+ return
+ end
+
+ #
+ # inheritable
+ #
+ if options[:scope]
+ scope = options[:scope]
+ @services = load_all_json(Path.named_path([:service_env_config, '*', scope], search_dir), Config::Tag, options)
+ @tags = load_all_json(Path.named_path([:tag_env_config, '*', scope], search_dir), Config::Tag, options)
+ @partials = load_all_json(Path.named_path([:service_env_config, '_*', scope], search_dir), Config::Tag, options)
+ @provider = load_json( Path.named_path([:provider_env_config, scope], search_dir), Config::Provider, options)
+ @common = load_json( Path.named_path([:common_env_config, scope], search_dir), Config::Object, options)
+ else
+ @services = load_all_json(Path.named_path([:service_config, '*'], search_dir), Config::Tag, options)
+ @tags = load_all_json(Path.named_path([:tag_config, '*'], search_dir), Config::Tag, options)
+ @partials = load_all_json(Path.named_path([:service_config, '_*'], search_dir), Config::Tag, options)
+ @provider = load_json( Path.named_path(:provider_config, search_dir), Config::Provider, options)
+ @common = load_json( Path.named_path(:common_config, search_dir), Config::Object, options)
+ end
+
+ # remove 'name' from partials, since partials get merged with nodes
+ @partials.values.each {|partial| partial.delete('name'); }
+
+ #
+ # shared: currently non-inheritable
+ # load the first ones we find, and only those.
+ #
+ if @@nodes.nil? || @@nodes.empty?
+ @@nodes = load_all_json(Path.named_path([:node_config, '*'], search_dir), Config::Node, options)
+ end
+ if @@secrets.nil? || @@secrets.empty?
+ @@secrets = load_json(Path.named_path(:secrets_config, search_dir), Config::Secrets, options)
+ end
+ end
+
+ #
+ # Loads a json template file as a Hash (used only when creating a new node .json
+ # file for the first time).
+ #
+ def template(template)
+ path = Path.named_path([:template_config, template], Path.provider_base)
+ if File.exist?(path)
+ return load_json(path, Config::Object)
+ else
+ return nil
+ end
+ end
+
+ private
+
+ def load_all_json(pattern, object_class, options={})
+ results = Config::ObjectList.new
+ Dir.glob(pattern).each do |filename|
+ next if options[:no_dots] && File.basename(filename) !~ /^[^\.]*\.json$/
+ obj = load_json(filename, object_class)
+ if obj
+ name = File.basename(filename).force_encoding('utf-8').sub(/^([^\.]+).*\.json$/,'\1')
+ obj['name'] ||= name
+ if options[:env]
+ obj.environment = options[:env]
+ end
+ results[name] = obj
+ end
+ end
+ results
+ end
+
+ def load_json(filename, object_class, options={})
+ if !File.exist?(filename)
+ return object_class.new(self)
+ end
+
+ Util::log :loading, filename, 3
+
+ #
+ # Read a JSON file, strip out comments.
+ #
+ # UTF8 is the default encoding for JSON, but others are allowed:
+ # https://www.ietf.org/rfc/rfc4627.txt
+ #
+ buffer = StringIO.new
+ File.open(filename, "rb", :encoding => 'UTF-8') do |f|
+ while (line = f.gets)
+ next if line =~ /^\s*\/\//
+ buffer << line
+ end
+ end
+
+ #
+ # force UTF-8
+ #
+ if $ruby_version >= [1,9]
+ string = buffer.string.force_encoding('utf-8')
+ else
+ string = Iconv.conv("UTF-8//IGNORE", "UTF-8", buffer.string)
+ end
+
+ # parse json
+ begin
+ hash = JSON.parse(string, :object_class => Hash, :array_class => Array) || {}
+ rescue SyntaxError, JSON::ParserError => exc
+ Util::log 0, :error, 'in file "%s":' % filename
+ Util::log 0, exc.to_s, :indent => 1
+ return nil
+ end
+ object = object_class.new(self)
+ object.deep_merge!(hash)
+ return object
+ end
+
+ end # end Environment
+
+end; end \ No newline at end of file