Class: Munin::Node
- Inherits:
-
Object
- Object
- Munin::Node
- Defined in:
- lib/munin-ruby/node.rb
Instance Attribute Summary collapse
-
#connection ⇒ Object
readonly
Returns the value of attribute connection.
Instance Method Summary collapse
-
#config(services, raw = false) ⇒ Object
Get a configuration information for service.
-
#connect ⇒ Object
Open service connection.
-
#disconnect(reconnect = true) ⇒ Object
Close server connection.
-
#fetch(services) ⇒ Object
Get all service metrics values.
-
#initialize(host = '127.0.0.1', port = 4949, reconnect = true) ⇒ Node
constructor
Initialize a new Node instance.
-
#list(node = "") ⇒ Object
Get a list of all available metrics.
-
#nodes ⇒ Object
Get a list of all available nodes.
-
#version ⇒ Object
Get a node version.
Methods included from Cache
Methods included from Parser
#parse_config, #parse_config_args, #parse_error, #parse_fetch, #parse_version, #process_data
Constructor Details
#initialize(host = '127.0.0.1', port = 4949, reconnect = true) ⇒ Node
Initialize a new Node instance
host - Server host port - Server port reconnect - Reconnect if connection was closed (default: true)
17 18 19 |
# File 'lib/munin-ruby/node.rb', line 17 def initialize(host='127.0.0.1', port=4949, reconnect=true) @connection = Munin::Connection.new(host, port, reconnect) end |
Instance Attribute Details
#connection ⇒ Object (readonly)
Returns the value of attribute connection.
8 9 10 |
# File 'lib/munin-ruby/node.rb', line 8 def connection @connection end |
Instance Method Details
#config(services, raw = false) ⇒ Object
Get a configuration information for service
services - Name of the service, or list of service names
68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 |
# File 'lib/munin-ruby/node.rb', line 68 def config(services, raw=false) unless [String, Array].include?(services.class) raise ArgumentError, "Service(s) argument required" end results = {} names = [services].flatten.uniq if names.empty? raise ArgumentError, "Service(s) argument required" end key = 'config_' + Digest::MD5.hexdigest(names.to_s) + "_#{raw}" cache(key) do names.each do |service| begin connection.send_data("config #{service}") lines = connection.read_packet results[service] = raw ? lines.join("\n") : parse_config(lines) rescue UnknownService, BadExit # TODO end end results end end |
#connect ⇒ Object
Open service connection
23 24 25 |
# File 'lib/munin-ruby/node.rb', line 23 def connect connection.open end |
#disconnect(reconnect = true) ⇒ Object
Close server connection
29 30 31 |
# File 'lib/munin-ruby/node.rb', line 29 def disconnect(reconnect=true) connection.close(reconnect) end |
#fetch(services) ⇒ Object
Get all service metrics values
services - Name of the service, or list of service names
100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 |
# File 'lib/munin-ruby/node.rb', line 100 def fetch(services) unless [String, Array].include?(services.class) raise ArgumentError, "Service(s) argument required" end results = {} names = [services].flatten if names.empty? raise ArgumentError, "Service(s) argument required" end names.each do |service| begin connection.send_data("fetch #{service}") lines = connection.read_packet results[service] = parse_fetch(lines) rescue UnknownService, BadExit # TODO end end results end |
#list(node = "") ⇒ Object
Get a list of all available metrics
53 54 55 56 57 58 59 60 61 62 |
# File 'lib/munin-ruby/node.rb', line 53 def list(node = "") cache "list_#{node.empty? ? 'default' : node}" do connection.send_data("list #{node}") if ( line = connection.read_line ) != "." line.split else connection.read_line.split end end end |
#nodes ⇒ Object
Get a list of all available nodes
44 45 46 47 48 49 |
# File 'lib/munin-ruby/node.rb', line 44 def nodes cache 'nodes' do connection.send_data("nodes") connection.read_line.split end end |
#version ⇒ Object
Get a node version
35 36 37 38 39 40 |
# File 'lib/munin-ruby/node.rb', line 35 def version cache 'version' do connection.send_data("version") parse_version(connection.read_line) end end |