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@siawyoung
Created March 16, 2015 04:39
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Script for posting to Slack's incoming webhooks
require 'json'
require 'optparse'
require 'net/http'
require 'net/https'
def parse_options(argv)
#######################################
# Please change the following as needed
#######################################
slack_post_url = 'https://hooks.slack.com/services/ImALongString'
slack_user_name = 'Monit'
slack_user_emoji = ':interrobang:'
slack_channel_name = '#badthingsarehappening' # remember to prepend a hashtag
app_name = 'AwesomeApp'
default_message_color = '#439FE0' # a nice neutral blue as default
#######################################
opts = {}
opts[:slack_options] = {}
opts[:slack_options][:attachments] = []
attachment = {}
attachment[:fields] = []
# fields
service = {}
service[:title] = "Service"
service[:short] = "true"
message = {}
message[:title] = "Message"
server = {}
server[:title] = "Server"
server[:short] = "true"
user = {}
user[:title] = "User"
user[:short] = "true"
@parser = OptionParser.new do |o|
### Optional options means they don't have to be set as part of the shell command, because they have defaults specified in the file.
o.on '--slack-url URL', 'Slack URL to post to. Optional: Yes Defaults: Set in script Accepts: String' do |arg|
opts[:slack_url] = arg
end
# Main body
o.on '--name NAME', 'User name of the bot. Optional: Yes Defaults: Set in script Accepts: #String' do |arg|
opts[:slack_options][:username] = arg
end
o.on '--channel CHANNEL', 'Slack channel to post to. Optional: Yes Defaults: Set in script Accepts: String' do |arg|
opts[:slack_options][:channel] = arg
end
o.on '--app APP', 'Name of the app. Optional: Yes Defaults: Set in script Accepts: String' do |arg|
opts[:slack_options][:text] = "*#{arg}* has sent a message:"
end
o.on '--emoji EMOJI', 'Optional: Yes Defaults: Set in script as :interrobang: Accepts: :String:' do |arg|
opts[:slack_options][:icon_emoji] = arg.gsub
end
# Attachment Options
o.on '--alert ALERT', 'Alert level. Optional: Yes Defaults: Set in script as "#439FE0" (a nice neutral blue) Accepts: "good", "warning", "danger", or a RGB hex value.' do |arg|
attachment[:color] = arg
end
o.on '--service SERVICE', 'Service involved. Optional: No Defaults: None Accepts: String' do |arg|
service[:value] = arg
end
o.on '--message MESSAGE', 'Message. Optional: No Defaults: None Accepts: String.' do |arg|
message[:value] = arg
end
o.on '--host HOST', 'Originating host. Optional: Yes Defaults: Value of hostname command Accepts: String' do |arg|
server[:value] = arg
end
o.on '--user USER', 'Originating user. Optional: Yes Defaults: Value of whoami command Accepts: String' do |arg|
user[:value] = arg
end
end
@parser.banner = "post_to_slack [options]"
@parser.parse!(argv)
# defaults
opts[:slack_url] ||= slack_post_url
opts[:slack_options][:channel] ||= slack_channel_name
opts[:slack_options][:username] ||= slack_user_name
opts[:slack_options][:icon_emoji] ||= slack_user_emoji
opts[:slack_options][:text] ||= "*#{app_name}* has sent a message:"
attachment[:fallback] ||= "Please use a platform that can see formatted messages :P"
attachment[:color] ||= default_message_color
server[:value] ||= `hostname`.strip
user[:value] ||= `whoami`.strip
# add fields to the attachment
attachment[:fields] << server
attachment[:fields] << user
attachment[:fields] << service
attachment[:fields] << message
# add attachment to the message
opts[:slack_options][:attachments] << attachment
opts
end
parsed_options = parse_options(ARGV)
uri = URI.parse(parsed_options[:slack_url])
https = Net::HTTP.new(uri.host,uri.port)
https.use_ssl = true
req = Net::HTTP::Post.new(uri.path, initheader = {'Content-Type' =>'application/json'})
req.body = parsed_options[:slack_options].to_json
puts req.body
res = https.request(req)
@JohanTan
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JohanTan commented Jul 2, 2015

Monit's native alerts has the virtue of only alerting once when defined tests have failed. However this slack messages sending is "stateless" and will be triggered every time when the test fails. Is there a good way to make it behaving similarly like native email alerts?

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