# encoding: utf-8 # # 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 # # grab an environment appropriate provider # def provider global.providers[@node.environment] || global.provider end # # returns a list of nodes that match the same environment # # if @node.environment is not set, we return other nodes # where environment is not set. # 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$/ ERB.new(File.read(filepath, :encoding => 'UTF-8'), nil, '%<>').result(binding) else File.read(filepath, :encoding => 'UTF-8') end else raise FileMissing.new(Path.named_path(filename), options) "" end end # # like #file, but allow missing files # def try_file(filename) return file(filename) rescue FileMissing return nil end # # returns what the file path will be, once the file is rsynced to the server. # an internal list of discovered file paths is saved, in order to rsync these files when needed. # # notes: # # * argument 'path' is relative to Path.provider/files or Path.provider_base/files # * the path returned by this method is absolute # * the path stored for use later by rsync is relative to Path.provider # * if the path does not exist locally, but exists in provider_base, then the default file from # provider_base is copied locally. this is required for rsync to work correctly. # def file_path(path) if path.is_a? Symbol path = [path, @node.name] end actual_path = Path.find_file(path) if actual_path.nil? Util::log 2, :skipping, "file_path(\"#{path}\") because there is no such file." nil else if actual_path =~ /^#{Regexp.escape(Path.provider_base)}/ # if file is under Path.provider_base, we must copy the default file to # to Path.provider in order for rsync to be able to sync the file. local_provider_path = actual_path.sub(/^#{Regexp.escape(Path.provider_base)}/, Path.provider) FileUtils.mkdir_p File.dirname(local_provider_path), :mode => 0700 FileUtils.install actual_path, local_provider_path, :mode => 0600 Util.log :created, Path.relative_path(local_provider_path) actual_path = local_provider_path end if File.directory?(actual_path) && actual_path !~ /\/$/ 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. # # +length+ is the character length of the generated password. # def secret(name, length=32) @manager.secrets.set(name, Util::Secret.generate(length), @node[:environment]) end # # inserts an hexidecimal secret string, generating it if needed. # # +bit_length+ is the bits in the secret, (ie length of resulting hex string will be bit_length/4) # def hex_secret(name, bit_length=128) @manager.secrets.set(name, Util::Secret.generate_hex(bit_length), @node[:environment]) 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 return nodes.values.collect {|node| node.domain.name} end # # Generates entries needed for updating /etc/hosts on a node (as a hash). # # Argument `nodes` can be nil or a list of nodes. If nil, only include the # IPs of the other nodes this @node as has encountered (plus all mx nodes). # # Also, for virtual machines, we use the local address if this @node is in # the same location as the node in question. # # We include the ssh public key for each host, so that the hash can also # be used to generate the /etc/ssh/known_hosts # def hosts_file(nodes=nil) if nodes.nil? if @referenced_nodes && @referenced_nodes.any? nodes = @referenced_nodes nodes = nodes.merge(nodes_like_me[:services => 'mx']) # all nodes always need to communicate with mx nodes. end end return nil unless nodes hosts = {} my_location = @node['location'] ? @node['location']['name'] : nil nodes.each_node do |node| hosts[node.name] = {'ip_address' => node.ip_address, 'domain_internal' => node.domain.internal, 'domain_full' => node.domain.full} node_location = node['location'] ? node['location']['name'] : nil if my_location == node_location if facts = @node.manager.facts[node.name] if facts['ec2_public_ipv4'] hosts[node.name]['ip_address'] = facts['ec2_public_ipv4'] end end end host_pub_key = Util::read_file([:node_ssh_pub_key,node.name]) if host_pub_key hosts[node.name]['host_pub_key'] = host_pub_key end end hosts 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 hostnames(node_list) # record the hosts 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 ## ## HAPROXY ## # # creates a hash suitable for configuring haproxy. the key is the node name of the server we are proxying to. # # * node_list - a hash of nodes for the haproxy servers # * stunnel_client - contains the mappings to local ports for each server node. # * non_stunnel_port - in case self is included in node_list, the port to connect to. # # 1000 weight is used for nodes in the same location. # 100 otherwise. # def haproxy_servers(node_list, stunnel_clients, non_stunnel_port=nil) default_weight = 10 local_weight = 100 # record the hosts_file hostnames(node_list) # create a simple map for node name -> local stunnel accept port accept_ports = stunnel_clients.inject({}) do |hsh, stunnel_entry| name = stunnel_entry.first.sub /_[0-9]+$/, '' hsh[name] = stunnel_entry.last['accept_port'] hsh end # if one the nodes in the node list is ourself, then there will not be a stunnel to it, # but we need to include it anyway in the haproxy config. if node_list[self.name] && non_stunnel_port accept_ports[self.name] = non_stunnel_port end # create the first pass of the servers hash servers = node_list.values.inject(Config::ObjectList.new) do |hsh, node| weight = default_weight if self['location'] && node['location'] if self.location['name'] == node.location['name'] weight = local_weight end end hsh[node.name] = Config::Object[ 'backup', false, 'host', 'localhost', 'port', accept_ports[node.name] || 0, 'weight', weight ] hsh end # if there are some local servers, make the others backup if servers.detect{|k,v| v.weight == local_weight} servers.each do |k,server| server['backup'] = server['weight'] == default_weight end end return servers end ## ## SSH ## # # Creates a hash from the ssh key info in users directory, for use in # updating authorized_keys file. Additionally, the 'monitor' public key is # included, which is used by the monitor nodes to run particular commands # remotely. # def authorized_keys hash = {} keys = Dir.glob(Path.named_path([:user_ssh, '*'])) keys.sort.each do |keyfile| ssh_type, ssh_key = File.read(keyfile, :encoding => 'UTF-8').strip.split(" ") name = File.basename(File.dirname(keyfile)) hash[name] = { "type" => ssh_type, "key" => ssh_key } end ssh_type, ssh_key = File.read(Path.named_path(:monitor_pub_key), :encoding => 'UTF-8').strip.split(" ") hash[Leap::Platform.monitor_username] = { "type" => ssh_type, "key" => ssh_key } hash end # # this is not currently used, because we put key information in the 'hosts' hash. # see 'hosts_file()' # # def known_hosts_file(nodes=nil) # if nodes.nil? # if @referenced_nodes && @referenced_nodes.any? # nodes = @referenced_nodes # end # end # return nil unless nodes # entries = [] # 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 ## ## UTILITY ## class AssertionFailed < Exception attr_accessor :assertion def initialize(assertion) @assertion = assertion end def to_s @assertion end end def assert(assertion) if instance_eval(assertion) true else raise AssertionFailed.new(assertion) end end end end; end