YALTools::CmdLine

Description

YALTools::CmdLine module is a collection of methods which are highly ad-hoc and depending on this project.

These are not intended not to reuse by another project. If a reusable method is developed, it should be moved to another module package.

Public Class Methods

getCouch(conf,label,debug=false) click to toggle source

returns the instance of YALTools::Main.

This method might execute “exit(1)” because of

missing configuration file.
missing label of configuration file.
failed to connect to the couchdb server.

This method is designed for interactive tools, not for a daemon process use.

     # File yalt/cmdline.rb, line 127
127:     def getCouch(conf,label,debug=false)
128:       ret = nil
129:       
130:       if not FileTest::exist?(conf)
131:         $stderr.puts "[error] conf file, #{conf}. No such file or directory."
132:         exit(1)
133:       end
134:       begin
135:         wrapper = YALTools::MainWrapper.new(conf, label)
136:         wrapper.debug = debug
137:         wrapper.set_master_pwfile(get_default_master_pwfile(conf))
138:         $stderr.puts "" if debug
139:         ret = wrapper.getCouch
140:       rescue YALTools::LabelNotFoundError
141:         $stderr.puts "[error] label name, #{label}, is not found."
142:         $stderr.puts "[error] reason: #{$!}" if debug
143:         exit(1)
144:       rescue YALTools::ServerConnectionError
145:         $stderr.puts "[error] wrong server setting corresponding to the label, #{label}."
146:         $stderr.puts "[error] reason: #{$!}" if debug
147:         exit(1)
148:       rescue
149:         $stderr.puts "[error] reason: #{$!}" if debug
150:       end
151:       return ret
152:     end

get_default_master_pwfile(conf) click to toggle source

returns the default master_pw filepath.

     # File yalt/cmdline.rb, line 109
109:     def get_default_master_pwfile(conf)
110:       require 'socket'
111:       basedir = File::dirname(conf)
112:       ret = File::join([basedir, "master_pw.#{Socket::gethostname}.json"])
113:       ret = File::join([basedir, "master_pw.json"]) if not FileTest::exist?(ret)
114:       return ret
115:     end

get_default_yaml_conf(basedir) click to toggle source

return the default yaml conf filepath.

     # File yalt/cmdline.rb, line 98
 98:     def get_default_yaml_conf(basedir)
 99:       ret = ""
100:       ret = ENV["YALTCONFIG"] if ENV["YALTCONFIG"] != nil
101:       ret = File::join([basedir,"..","conf","yalt.#{Socket::gethostname}.yaml"]) if ret.empty? or not FileTest::exist?(ret)
102:       ret = File::join([basedir,"..","conf","yalt.yaml"]) if ret.empty? or not FileTest::exist?(ret)
103:       
104:       return ret
105:     end

get_default_yaml_label() click to toggle source

returns the default label name, “default.user“

    # File yalt/cmdline.rb, line 91
91:     def get_default_yaml_label()
92:       return "default.user"
93:     end

line_to_json(line) click to toggle source

parses the line as json. returns the Hash object which converted by JSON::parse(line).

    # File yalt/cmdline.rb, line 37
37:     def line_to_json(line) # :yields: json_hash
38:       json = nil
39:       begin
40:         json = JSON::parse(line)
41:       rescue
42:         json = {}
43:       end
44:       return json
45:     end

load_line(file = '-') click to toggle source

iterates line which is read from $stdin or file.

The default value, ’-’, means that the $stdin is default source.

    # File yalt/cmdline.rb, line 22
22:     def load_line(file = '-') # :yields: line
23:       if file == "-"
24:         $stdin.each do |line|
25:           yield line.strip
26:         end
27:       elsif FileTest.exist?(file)
28:         open(file).each do |line|
29:           yield line.strip
30:         end
31:       end
32:     end

load_line_as_csv(file, sep) click to toggle source

returnds the Array object which generated by CSV class.

    # File yalt/cmdline.rb, line 49
49:     def load_line_as_csv(file, sep) # :yields: row
50:       require 'csv'
51:       input = nil
52:       input = $stdin if file == "-"
53:       input = open(file)  if FileTest.exist?(file)
54:       
55:       opts = {}
56:       opts[:col_sep] = sep
57:       opts[:headers] = true
58:       opts[:skip_blanks] = true
59:       CSV.new(input, opts).each do |row|
60:         yield row
61:       end
62:     end

save_data(data, file, mode="a+", perms=0755) click to toggle source

writes the data into file or $stdout. It assumes that the data is text data, that is the why it uses the puts() method instead of write().

    # File yalt/cmdline.rb, line 67
67:     def save_data(data, file, mode="a+", perms=0755)
68:       if file == "-"
69:         $stdout.puts(data)
70:         $stdout.flush
71:       else
72:         open(file, mode, perms) do |f|
73:           f.puts(data)
74:           f.flush
75:         end
76:       end
77:     end

Public Instance Methods

get_header(couch,uri) click to toggle source

sends HEAD request and returns a Hash object of results.

     # File yalt/cmdline.rb, line 156
156:     def get_header(couch,uri)
157:       ret = couch.head(uri)
158:       if ret.kind_of?(Net::HTTPSuccess)
159:         json = {}
160:         ret.each do |i|
161:           json[i] = ret[i]
162:         end
163:         return json
164:       end
165:     end

Private Instance Methods