Class: Munin::Node
- Inherits:
-
Object
- Object
- Munin::Node
- Defined in:
- lib/munin-ruby/node.rb
Constant Summary collapse
- DEFAULT_OPTIONS =
{:timeout => Munin::TIMEOUT_TIME}
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, options = {}) ⇒ 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, options = {}) ⇒ Node
Initialize a new Node instance
host - Server host port - Server port reconnect - Reconnect if connection was closed (default: true) options - A hash containing different options
:timeout => A timeout in seconds to be used in the connection
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# File 'lib/munin-ruby/node.rb', line 19 def initialize(host='127.0.0.1', port=4949, reconnect=true, = {}) @options = DEFAULT_OPTIONS.merge() @connection = Munin::Connection.new(host, port, reconnect, @options) end |
Instance Attribute Details
#connection ⇒ Object (readonly)
Returns the value of attribute connection.
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# 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
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# File 'lib/munin-ruby/node.rb', line 75 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
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# File 'lib/munin-ruby/node.rb', line 26 def connect connection.open end |
#disconnect(reconnect = true) ⇒ Object
Close server connection
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# File 'lib/munin-ruby/node.rb', line 32 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
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# File 'lib/munin-ruby/node.rb', line 107 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
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# File 'lib/munin-ruby/node.rb', line 60 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
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# File 'lib/munin-ruby/node.rb', line 47 def nodes nodes = [] cache 'nodes' do connection.send_data("nodes") while ( ( line = connection.read_line ) != "." ) nodes << line end nodes end end |
#version ⇒ Object
Get a node version
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# File 'lib/munin-ruby/node.rb', line 38 def version cache 'version' do connection.send_data("version") parse_version(connection.read_line) end end |