diff options
Diffstat (limited to 'provider_base/lib/macros/haproxy.rb')
| -rw-r--r-- | provider_base/lib/macros/haproxy.rb | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/provider_base/lib/macros/haproxy.rb b/provider_base/lib/macros/haproxy.rb new file mode 100644 index 00000000..db0d4db8 --- /dev/null +++ b/provider_base/lib/macros/haproxy.rb @@ -0,0 +1,68 @@ +# encoding: utf-8 + +## +## HAPROXY +## + +module LeapCli + module Macro + + # + # 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 + + end +end
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