initial code commit

1 files changed, 119 insertions, 0 deletions

diff --git a/cli/lib/leap_cli/config.rb b/cli/lib/leap_cli/config.rb
new file mode 100644
index 0000000..44e66be
--- /dev/null
+++ b/cli/lib/leap_cli/config.rb
@@ -0,0 +1,119 @@
+module LeapCli
+  #
+  # This class represents the configuration for a single node, service, or tag.
+  #
+  class Config < Hash
+
+    def initialize(config_type, manager)
+      @manager = manager
+      @type = config_type
+    end
+
+    #
+    # lazily eval dynamic values when we encounter them.
+    #
+    def [](key)
+      value = fetch(key, nil)
+      if value.is_a? Array
+        value
+      elsif value.nil?
+        nil
+      else
+        if value =~ /^= (.*)$/
+          value = eval($1)
+          self[key] = value
+        end
+        value
+      end
+    end
+
+    #
+    # make the type appear to be a normal Hash in yaml.
+    #
+    def to_yaml_type
+     "!map"
+    end
+
+    #
+    # just like Hash#to_yaml, but sorted
+    #
+    def to_yaml(opts = {})
+      YAML::quick_emit(self, opts) do |out|
+        out.map(taguri, to_yaml_style) do |map|
+          keys.sort.each do |k|
+            v = self.fetch(k)
+            map.add(k, v)
+          end
+        end
+      end
+    end
+
+    #
+    # make obj['name'] available as obj.name
+    #
+    def method_missing(method, *args, &block)
+      if has_key?(method.to_s)
+        self[method.to_s]
+      else
+        super
+      end
+    end
+
+    #
+    # convert self into a plain hash, but only include the specified keys
+    #
+    def to_h(*keys)
+      keys.map(&:to_s).inject({}) do |hsh, key|
+        if has_key?(key)
+          hsh[key] = self[key]
+        end
+        hsh
+      end
+    end
+
+    def nodes
+      if @type == :node
+        @manager.nodes
+      else
+        @nodes ||= ConfigList.new
+      end
+    end
+
+    def services
+      if @type == :node
+        self['services'] || []
+      else
+        @manager.services
+      end
+    end
+
+    def tags
+      if @type == :node
+        self['tags'] || []
+      else
+        @manager.tags
+      end
+    end
+
+    private
+
+    ##
+    ## MACROS
+    ## these are methods used when eval'ing a value in the .json configuration
+    ##
+
+    #
+    # inserts the contents of a file
+    #
+    def file(filename)
+      filepath = Path.find_file(name, filename)
+      if filepath
+        File.read(filepath)
+      else
+        log0('no such file, "%s"' % filename)
+        ""
+      end
+    end
+
+  end # class
+end # module
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