forked from appoxy/aws
/
right_mon_interface.rb
232 lines (184 loc) · 8.26 KB
/
right_mon_interface.rb
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module Aws
class Mon < Aws::AwsBase
include Aws::AwsBaseInterface
#Amazon EC2 API version being used
API_VERSION = "2009-05-15"
DEFAULT_HOST = "monitoring.amazonaws.com"
DEFAULT_PATH = '/'
DEFAULT_PROTOCOL = 'https'
DEFAULT_PORT = 443
# Available measures for EC2 instances:
# NetworkIn NetworkOut DiskReadOps DiskWriteOps DiskReadBytes DiskWriteBytes CPUUtilization
measures=%w(NetworkIn NetworkOut DiskReadOps DiskWriteOps DiskReadBytes DiskWriteBytes CPUUtilization)
@@bench = Aws::AwsBenchmarkingBlock.new
def self.bench_xml
@@bench.xml
end
def self.bench_ec2
@@bench.service
end
# Current API version (sometimes we have to check it outside the GEM).
@@api = ENV['EC2_API_VERSION'] || API_VERSION
def self.api
@@api
end
def initialize(aws_access_key_id=nil, aws_secret_access_key=nil, params={})
init({ :name => 'MON',
:default_host => ENV['MON_URL'] ? URI.parse(ENV['MON_URL']).host : DEFAULT_HOST,
:default_port => ENV['MON_URL'] ? URI.parse(ENV['MON_URL']).port : DEFAULT_PORT,
:default_service => ENV['MON_URL'] ? URI.parse(ENV['MON_URL']).path : DEFAULT_PATH,
:default_protocol => ENV['MON_URL'] ? URI.parse(ENV['MON_URL']).scheme : DEFAULT_PROTOCOL,
:api_version => API_VERSION },
aws_access_key_id || ENV['AWS_ACCESS_KEY_ID'],
aws_secret_access_key|| ENV['AWS_SECRET_ACCESS_KEY'],
params)
end
def generate_request(action, params={})
service_hash = {"Action" => action,
"AWSAccessKeyId" => @aws_access_key_id,
"Version" => @@api }
service_hash.update(params)
service_params = signed_service_params(@aws_secret_access_key, service_hash, :get, @params[:server], @params[:service])
# use POST method if the length of the query string is too large
if service_params.size > 2000
if signature_version == '2'
# resign the request because HTTP verb is included into signature
service_params = signed_service_params(@aws_secret_access_key, service_hash, :post, @params[:server], @params[:service])
end
request = Net::HTTP::Post.new(service)
request.body = service_params
request['Content-Type'] = 'application/x-www-form-urlencoded'
else
request = Net::HTTP::Get.new("#{@params[:service]}?#{service_params}")
end
#puts "\n\n --------------- QUERY REQUEST TO AWS -------------- \n\n"
#puts "#{@params[:service]}?#{service_params}\n\n"
# prepare output hash
{ :request => request,
:server => @params[:server],
:port => @params[:port],
:protocol => @params[:protocol] }
end
# Sends request to Amazon and parses the response
# Raises AwsError if any banana happened
def request_info(request, parser, options={})
conn = get_conn(:mon_connection, @params, @logger)
request_info_impl(conn, @@bench, request, parser, options)
end
#-----------------------------------------------------------------
# REQUESTS
#-----------------------------------------------------------------
def list_metrics(options={})
next_token = options[:next_token] || nil
params = { }
params['NextToken'] = next_token unless next_token.nil?
@logger.info("list Metrics ")
link = generate_request("ListMetrics", params)
resp = request_info(link, QMonListMetrics.new(:logger => @logger))
rescue Exception
on_exception
end
# measureName: CPUUtilization (Units: Percent), NetworkIn (Units: Bytes), NetworkOut (Units: Bytes), DiskWriteOps (Units: Count)
# DiskReadBytes (Units: Bytes), DiskReadOps (Units: Count), DiskWriteBytes (Units: Bytes)
# stats: array containing one or more of Minimum, Maximum, Sum, Average, Samples
# start_time : Timestamp to start
# end_time: Timestamp to end
# unit: Either Seconds, Percent, Bytes, Bits, Count, Bytes, Bits/Second, Count/Second, and None
#
# Optional parameters:
# period: Integer 60 or multiple of 60
# dimensions: Hash containing keys ImageId, AutoScalingGroupName, InstanceId, InstanceType
# customUnit: nil. not supported currently.
# namespace: AWS/EC2
def get_metric_statistics ( measure_name, stats, start_time, end_time, unit, options={})
period = options[:period] || 60
dimensions = options[:dimensions] || nil
custom_unit = options[:custom_unit] || nil
namespace = options[:namespace] || "AWS/EC2"
params = {}
params['MeasureName'] = measure_name
i=1
stats.each do |s|
params['Statistics.member.'+i.to_s] = s
i = i+1
end
params['Period'] = period
if (dimensions != nil)
i = 1
dimensions.each do |k, v|
params['Dimensions.member.'+i.to_s+".Name."+i.to_s] = k
params['Dimensions.member.'+i.to_s+".Value."+i.to_s] = v
i = i+1
end
end
params['StartTime'] = start_time
params['EndTime'] = end_time
params['Unit'] = unit
#params['CustomUnit'] = customUnit always nil
params['Namespace'] = namespace
link = generate_request("GetMetricStatistics", params)
resp = request_info(link, QMonGetMetricStatistics.new(:logger => @logger))
rescue Exception
on_exception
end
#-----------------------------------------------------------------
# PARSERS: Instances
#-----------------------------------------------------------------
class QMonGetMetricStatistics < Aws::AwsParser
def reset
@result = []
end
def tagstart(name, attributes)
@metric = {} if name == 'member'
end
def tagend(name)
case name
when 'Timestamp' then
@metric[:timestamp] = @text
when 'Samples' then
@metric[:samples] = @text
when 'Unit' then
@metric[:unit] = @text
when 'Average' then
@metric[:average] = @text
when 'Minimum' then
@metric[:minimum] = @text
when 'Maximum' then
@metric[:maximum] = @text
when 'Sum' then
@metric[:sum] = @text
when 'Value' then
@metric[:value] = @text
when 'member' then
@result << @metric
end
end
end
class QMonListMetrics < Aws::AwsParser
def reset
@result = []
@namespace = ""
@measure_name = ""
end
def tagstart(name, attributes)
@metric = {} if name == 'member'
end
def tagend(name)
case name
when 'MeasureName' then
@measure_name = @text
when 'Namespace' then
@namespace = @text
when 'Name' then
@metric[:name] = @text
when 'Value' then
@metric[:value] = @text
when 'member' then
@metric[:namespace] = @namespace
@metric[:measure_name] = @measure_name
@result << @metric
end
end
end
end
end