-
Notifications
You must be signed in to change notification settings - Fork 14
/
tagger.rb
283 lines (258 loc) · 8.65 KB
/
tagger.rb
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
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
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
# === Synopsis:
# RightScale Tagger (rs_tag) - (c) 2009-2014 RightScale Inc
#
# Tagger allows listing, adding and removing tags on the current instance and
# querying for instances with a given set of tags
#
# === Examples:
# Retrieve all tags:
# rs_tag --list
# rs_tag -l
#
# Add tag 'a_tag' to instance:
# rs_tag --add a_tag
# rs_tag -a a_tag
#
# Remove tag 'a_tag':
# rs_tag --remove a_tag
# rs_tag -r a_tag
#
# Retrieve instances with any of the tags in a set each tag is a separate argument:
# rs_tag --query "a_tag" "b:machine=tag" "c_tag with space"
# rs_tag -q "a_tag" "b:machine=tag" "c_tag with space"
#
# === Usage
# rs_tag (--list, -l | --add, -a TAG | --remove, -r TAG | --query, -q TAG[s])
#
# Options:
# --list, -l List current server tags
# --add, -a TAG Add tag named TAG
# --remove, -r TAG Remove tag named TAG
# --query, -q TAG[s] Query for instances that have any of the TAG[s]
# with TAG being quoted if it contains spaces in it's value
# --die, -e Exit with error if query/list fails
# --format, -f FMT Output format: json, yaml, text
# --verbose, -v Display debug information
# --help: Display help
# --version: Display version information
# --timeout, -t Custom timeout parameter (default 120 sec)
#
require 'rubygems'
require 'trollop'
require 'right_agent'
require 'right_agent/scripts/usage'
require 'right_agent/scripts/common_parser'
require File.normalize_path(File.join(File.dirname(__FILE__), 'command_helper'))
module RightScale
class Tagger
include CommandHelper
TAG_REQUEST_TIMEOUT = 2 * 60 # synchronous tag requests need a long timeout
class TagError < Exception
attr_reader :code
def initialize(msg, code=nil)
super(msg)
@code = code || 1
end
end
def get_tags(res, options)
raise TagError.new("List current server tags failed: #{res.inspect}", 45) unless res.kind_of?(Array)
if res.empty?
if options[:die]
raise TagError.new('No server tags found', 44)
else
write_output(format_output([], options[:format]))
end
else
write_output(format_output(res, options[:format]))
end
end
def query_tags(res, options)
r = serialize_operation_result(res)
raise TagError.new("Query tags failed: #{r.inspect}", 46) unless r.kind_of?(OperationResult)
if r.success?
if r.content.nil? || r.content.empty?
if options[:die]
raise TagError.new("No servers with tags #{options[:tags].inspect}", 44)
else
write_output(format_output({}, options[:format]))
end
else
write_output(format_output(r.content, options[:format]))
end
else
raise TagError.new("Query tags failed: #{r.content}", 53)
end
end
def add_tag(res, options)
r = serialize_operation_result(res)
raise TagError.new("Add tag failed: #{r.inspect}", 47) unless r.kind_of?(OperationResult)
if r.success?
write_error("Successfully added tag #{options[:tag]}")
else
raise TagError.new("Add tag failed: #{r.content}", 54)
end
end
def remove_tag(res, options)
r = serialize_operation_result(res)
raise TagError.new("Remove tag failed: #{r.inspect}", 48) unless r.kind_of?(OperationResult)
if r.success?
write_output("Request processed successfully")
else
raise TagError.new("Remove tag failed: #{r.content}", 55)
end
end
def build_cmd(options)
cmd = { :name => options[:action] }
cmd[:tag] = options[:tag] if options[:tag]
cmd[:tags] = options[:tags] if options[:tags]
cmd[:query] = options[:query] if options[:query]
cmd
end
def set_logger(options)
if options[:verbose]
log = Logger.new(STDERR)
else
log = Logger.new(StringIO.new)
end
RightScale::Log.force_logger(log)
end
def missing_argument
write_error("Missing argument, rs_tag --help for additional information")
fail(1)
end
# Manage instance tags
#
# === Parameters
# options(Hash):: Hash of options as defined in +parse_args+
#
# === Return
# true:: Always return true
def run(options)
check_privileges
set_logger(options)
missing_argument unless options.include?(:action)
# Don't use send_command callback as it swallows exceptions by design
res = send_command(build_cmd(options), options[:verbose], options[:timeout])
case options[:action]
when :get_tags
get_tags(res, options)
when :query_tags
query_tags(res, options)
when :add_tag
add_tag(res, options)
when :remove_tag
remove_tag(res, options)
else
write_error(res)
end
rescue SystemExit => e
raise e
rescue Exception => e
fail(e)
end
# Create options hash from command line arguments
#
# === Return
# options(Hash):: Hash of options as defined by the command line
def parse_args
parser = Trollop::Parser.new do
opt :list
opt :add, "", :type => :string
opt :remove, "", :type => :string
opt :query, "", :type => :strings
opt :verbose
opt :die, "", :short => "-e"
opt :format, "", :type => :string, :default => "json"
opt :timeout, "", :type => :int, :default => TAG_REQUEST_TIMEOUT
version ""
end
parse do
options = parser.parse
options[:action] = :get_tags if options.delete(:list)
if options[:add]
options[:action] = :add_tag
options[:tag] = options.delete(:add)
raise ::Trollop::CommandlineError.new("Non-empty value required") if options[:tag].empty?
end
if options[:remove]
options[:action] = :remove_tag
options[:tag] = options.delete(:remove)
raise ::Trollop::CommandlineError.new("Non-empty value required") if options[:tag].empty?
end
if options[:query]
options[:action] = :query_tags
options[:tags] = options.delete(:query).map { |tag| tag.strip }
end
options[:format] = parse_format(options[:format])
options
end
end
protected
# Writes to STDOUT (and a placeholder for spec mocking).
#
# === Parameters
# @param [String] message to write
def write_output(message)
STDOUT.puts(message)
end
# Writes to STDERR (and a placeholder for spec mocking).
#
# === Parameters
# @param [String] message to write
def write_error(message)
STDERR.puts(message)
end
# Format output for display to user
#
# === Parameter
# result(Object):: JSON-compatible data structure (array, hash, etc)
# format(String):: how to print output - json, yaml, text
#
# === Return
# a String containing the specified output format
def format_output(result, format)
case format
when :json
JSON.pretty_generate(result)
when :yaml
YAML.dump(result)
when :text
result = result.keys if result.respond_to?(:keys)
result.join(" ")
else
raise ArgumentError, "Unknown output format #{format}"
end
end
# Version information
#
# === Return
# (String):: Version information
def version
"rs_tag #{right_link_version} - RightLink's tagger (c) 2009-2014 RightScale"
end
def usage
Usage.scan(__FILE__)
end
end # Tagger
end # RightScale
#
# Copyright (c) 2011 RightScale Inc
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.