move config macros to config/macros.rb

1 files changed, 236 insertions, 0 deletions

diff --git a/lib/leap_cli/config/macros.rb b/lib/leap_cli/config/macros.rb
new file mode 100644
index 0000000..844f6c5
--- /dev/null
+++ b/lib/leap_cli/config/macros.rb
@@ -0,0 +1,236 @@
+#
+# MACROS
+# these are methods available when eval'ing a value in the .json configuration
+#
+# This module is included in Config::Object
+#
+
+module LeapCli; module Config
+  module Macros
+    ##
+    ## NODES
+    ##
+
+    #
+    # the list of all the nodes
+    #
+    def nodes
+      global.nodes
+    end
+
+    #
+    # returns a list of nodes that match the same environment
+    #
+    def nodes_like_me
+      nodes[:environment => @node.environment]
+    end
+
+    ##
+    ## FILES
+    ##
+
+    class FileMissing < Exception
+      attr_accessor :path, :options
+      def initialize(path, options={})
+        @path = path
+        @options = options
+      end
+      def to_s
+        @path
+      end
+    end
+
+    #
+    # inserts the contents of a file
+    #
+    def file(filename, options={})
+      if filename.is_a? Symbol
+        filename = [filename, @node.name]
+      end
+      filepath = Path.find_file(filename)
+      if filepath
+        if filepath =~ /\.erb$/
+          ERB.new(File.read(filepath), nil, '%<>').result(binding)
+        else
+          File.read(filepath)
+        end
+      else
+        raise FileMissing.new(Path.named_path(filename), options)
+        ""
+      end
+    end
+
+    #
+    # like #file, but allow missing files
+    #
+    def try_file(filename)
+      return file(filename)
+    rescue FileMissing
+      return nil
+    end
+
+    #
+    # returns what the file path will be, once the file is rsynced to the server.
+    # an internal list of discovered file paths is saved, in order to rsync these files when needed.
+    #
+    # notes:
+    #
+    # * argument 'path' is relative to Path.provider/files or Path.provider_base/files
+    # * the path returned by this method is absolute
+    # * the path stored for use later by rsync is relative to Path.provider
+    # * if the path does not exist locally, but exists in provider_base, then the default file from
+    #   provider_base is copied locally. this is required for rsync to work correctly.
+    #
+    def file_path(path)
+      if path.is_a? Symbol
+        path = [path, @node.name]
+      end
+      actual_path = Path.find_file(path)
+      if actual_path.nil?
+        Util::log 2, :skipping, "file_path(\"#{path}\") because there is no such file."
+        nil
+      else
+        if actual_path =~ /^#{Regexp.escape(Path.provider_base)}/
+          # if file is under Path.provider_base, we must copy the default file to
+          # to Path.provider in order for rsync to be able to sync the file.
+          local_provider_path = actual_path.sub(/^#{Regexp.escape(Path.provider_base)}/, Path.provider)
+          FileUtils.mkdir_p File.dirname(local_provider_path)
+          FileUtils.cp_r actual_path, local_provider_path
+          Util.log :created, Path.relative_path(local_provider_path)
+          actual_path = local_provider_path
+        end
+        if File.directory?(actual_path) && actual_path !~ /\/$/
+          actual_path += '/' # ensure directories end with /, important for building rsync command
+        end
+        relative_path = Path.relative_path(actual_path)
+        @node.file_paths << relative_path
+        @node.manager.provider.hiera_sync_destination + '/' + relative_path
+      end
+    end
+
+    #
+    # inserts a named secret, generating it if needed.
+    #
+    # manager.export_secrets should be called later to capture any newly generated secrets.
+    #
+    def secret(name, length=32)
+      @manager.secrets.set(name, Util::Secret.generate(length))
+    end
+
+    #
+    # return a fingerprint for a x509 certificate
+    #
+    def fingerprint(filename)
+      "SHA256: " + X509.fingerprint("SHA256", Path.named_path(filename))
+    end
+
+    ##
+    ## HOSTS
+    ##
+
+    #
+    # records the list of hosts that are encountered for this node
+    #
+    def hostnames(nodes)
+      @referenced_nodes ||= ObjectList.new
+      if nodes.is_a? Config::Object
+        nodes = ObjectList.new nodes
+      end
+      nodes.each_node do |node|
+        @referenced_nodes[node.name] = node
+      end
+      nodes.values.collect {|node| node.domain.name}
+    end
+
+    #
+    # generates entries needed for updating /etc/hosts on a node, but only including the IPs of the
+    # other nodes we have encountered.
+    #
+    def hosts_file
+      return nil unless @referenced_nodes
+      entries = []
+      @referenced_nodes.each_node do |node|
+        entries << "#{node.ip_address}    #{node.name} #{node.domain.internal} #{node.domain.full}"
+      end
+      entries.join("\n")
+    end
+
+    def known_hosts_file
+      return nil unless @referenced_nodes
+      entries = []
+      @referenced_nodes.each_node do |node|
+        hostnames = [node.name, node.domain.internal, node.domain.full, node.ip_address].join(',')
+        pub_key   = Util::read_file([:node_ssh_pub_key,node.name])
+        if pub_key
+          entries << [hostnames, pub_key].join(' ')
+        end
+      end
+      entries.join("\n")
+    end
+
+    ##
+    ## STUNNEL
+    ##
+
+    #
+    # stunnel configuration for the client side.
+    #
+    # +node_list+ is a ObjectList of nodes running stunnel servers.
+    #
+    # +port+ is the real port of the ultimate service running on the servers
+    # that the client wants to connect to.
+    #
+    # About ths stunnel puppet names:
+    #
+    # * accept_port is the port on localhost to which local clients
+    #   can connect. it is auto generated serially.
+    # * connect_port is the port on the stunnel server to connect to.
+    #   it is auto generated from the +port+ argument.
+    #
+    #  The network looks like this:
+    #
+    #  |------ stunnel client ---------------| |--------- stunnel server -----------------------|
+    #  consumer app -> localhost:accept_port -> server:connect_port -> server:port -> service app
+    #
+    # generates an entry appropriate to be passed directly to
+    # create_resources(stunnel::service, hiera('..'), defaults)
+    #
+    def stunnel_client(node_list, port, options={})
+      @next_stunnel_port ||= 4000
+      node_list.values.inject(Config::ObjectList.new) do |hsh, node|
+        if node.name != self.name || options[:include_self]
+          hsh["#{node.name}#{port}"] = Config::Object[
+            'accept_port', @next_stunnel_port,
+            'connect', node.domain.internal,
+            'connect_port', stunnel_port(port)
+          ]
+          @next_stunnel_port += 1
+        end
+        hsh
+      end
+    end
+
+    #
+    # generates a stunnel server entry.
+    #
+    # +port+ is the real port targeted service.
+    #
+    def stunnel_server(port)
+      {"accept" => stunnel_port(port), "connect" => "127.0.0.1:#{port}"}
+    end
+
+    #
+    # maps a real port to a stunnel port (used as the connect_port in the client config
+    # and the accept_port in the server config)
+    #
+    def stunnel_port(port)
+      port = port.to_i
+      if port < 50000
+        return port + 10000
+      else
+        return port - 10000
+      end
+    end
+
+  end
+end; end