From 88d6e27794ac30922bca446ebebeaf9c2bf7e56c Mon Sep 17 00:00:00 2001 From: Steve Kemp Date: Thu, 22 Nov 2012 11:14:59 +0000 Subject: Moved the worker into the custodian namespace. --- lib/custodian/worker.rb | 320 ++++++++++++++++++++++++------------------------ 1 file changed, 162 insertions(+), 158 deletions(-) (limited to 'lib/custodian') diff --git a/lib/custodian/worker.rb b/lib/custodian/worker.rb index 0876f11..73cc97c 100644 --- a/lib/custodian/worker.rb +++ b/lib/custodian/worker.rb @@ -36,216 +36,220 @@ require 'custodian/protocol-tests/tcp.rb' # This class contains the code for connecting to a Beanstalk queue, # fetching tests from it, and executing them # -class CustodianWorker - - # - # The beanstalk queue. - # - attr_reader :queue - - # - # How many times we re-test before we detect a failure - # - attr_reader :retry_count - - # - # The log-file object - # - attr_reader :logger - - # - # Constructor: Connect to the queue - # - def initialize( server, logfile ) - - # Connect to the queue - @queue = Beanstalk::Pool.new([server]) - - # Instantiate the logger. - @logger = Logger.new( logfile, "daily" ) - - if ( ENV['REPEAT'] ) - @retry_count=ENV['REPEAT'].to_i - else - @retry_count=5 - end +module Custodian - end + class Worker + + + # + # The beanstalk queue. + # + attr_reader :queue + # + # How many times we re-test before we detect a failure + # + attr_reader :retry_count + # + # The log-file object + # + attr_reader :logger - # - # Write the given message to our logfile - and show it to the console - # if we're running with '--verbose' in play - # - def log_message( msg ) + # + # Constructor: Connect to the queue + # + def initialize( server, logfile ) + + # Connect to the queue + @queue = Beanstalk::Pool.new([server]) + + # Instantiate the logger. + @logger = Logger.new( logfile, "daily" ) + + if ( ENV['REPEAT'] ) + @retry_count=ENV['REPEAT'].to_i + else + @retry_count=5 + end + + end + + + + # + # Write the given message to our logfile - and show it to the console + # if we're running with '--verbose' in play + # + def log_message( msg ) @logger.info( msg ) puts msg if ( ENV['VERBOSE'] ) - end + end - # - # Process jobs from the queue - never return. - # - def run! - while( true ) - log_message( "\n" ) - log_message( "\n" ) - log_message( "Waiting for job.." ) - process_single_job() + # + # Process jobs from the queue - never return. + # + def run! + while( true ) + log_message( "\n" ) + log_message( "\n" ) + log_message( "Waiting for job.." ) + process_single_job() + end end - end - # - # Fetch a single job from the queue, and process it. - # - def process_single_job + # + # Fetch a single job from the queue, and process it. + # + def process_single_job - result = false + result = false - begin - job = @queue.reserve() + begin + job = @queue.reserve() - log_message( "Job aquired - Job ID : #{job.id}" ) + log_message( "Job aquired - Job ID : #{job.id}" ) - # - # Get the job body - # - json = job.body - raise ArgumentError, "Body doesn't look like JSON" unless( json =~ /[{}]/ ) + # + # Get the job body + # + json = job.body + raise ArgumentError, "Body doesn't look like JSON" unless( json =~ /[{}]/ ) - # - # Decode the JSON body - it should return a non-empty hash. - # - hash = JSON.parse( json ) + # + # Decode the JSON body - it should return a non-empty hash. + # + hash = JSON.parse( json ) - # - # Ensure we got a non-empty hash. - # - raise ArgumentError, "JSON didn't decode to a hash" unless hash.kind_of?(Hash) - raise ArgumentError, "JSON hash is empty" if (hash.empty?) + # + # Ensure we got a non-empty hash. + # + raise ArgumentError, "JSON didn't decode to a hash" unless hash.kind_of?(Hash) + raise ArgumentError, "JSON hash is empty" if (hash.empty?) - # - # Are we being verbose? - # - hash['verbose'] = 1 if ( ENV['VERBOSE'] ) + # + # Are we being verbose? + # + hash['verbose'] = 1 if ( ENV['VERBOSE'] ) - # - # Output the details. - # - log_message( "Job body contains the following keys & values:") - hash.keys.each do |key| - log_message( " #{key} => #{hash[key]}" ) - end + # + # Output the details. + # + log_message( "Job body contains the following keys & values:") + hash.keys.each do |key| + log_message( " #{key} => #{hash[key]}" ) + end - # - # Did the test succeed? If not count the number of times it failed in - # a row. We'll repeat several times - # - success = false - count = 0 + # + # Did the test succeed? If not count the number of times it failed in + # a row. We'll repeat several times + # + success = false + count = 0 - # - # As a result of this test we'll either raise/clear with mauve. - # - # This helper will do that job. - # - alert = Alerter.new( hash ) + # + # As a result of this test we'll either raise/clear with mauve. + # + # This helper will do that job. + # + alert = Alerter.new( hash ) - # - # Convert the test-type to a class name, to do the protocol test. - # - # Given a test-type "foo" we'll attempt to instantiate a class called FOOTest. - # - test = hash['test_type'] - test = "http" if ( test == "https" ) - clazz = test.upcase - clazz = "#{clazz}Test" + # + # Convert the test-type to a class name, to do the protocol test. + # + # Given a test-type "foo" we'll attempt to instantiate a class called FOOTest. + # + test = hash['test_type'] + test = "http" if ( test == "https" ) + clazz = test.upcase + clazz = "#{clazz}Test" - # - # Create the test object. - # - obj = eval(clazz).new( hash ) + # + # Create the test object. + # + obj = eval(clazz).new( hash ) - # - # Ensure that the object we load implements the two methods - # we expect. - # - if ( ( ! obj.respond_to?( "error") ) || - ( ! obj.respond_to?( "run_test" ) ) ) - puts "Class #{clazz} doesn't implement the full protocol-test API" - end + # + # Ensure that the object we load implements the two methods + # we expect. + # + if ( ( ! obj.respond_to?( "error") ) || + ( ! obj.respond_to?( "run_test" ) ) ) + puts "Class #{clazz} doesn't implement the full protocol-test API" + end - # - # We'll run no more than MAX times. - # - # We stop the execution on a single success. - # - while ( ( count < @retry_count ) && ( success == false ) ) + # + # We'll run no more than MAX times. + # + # We stop the execution on a single success. + # + while ( ( count < @retry_count ) && ( success == false ) ) - log_message( "Running test - [#{count}/#{@retry_count}]" ) + log_message( "Running test - [#{count}/#{@retry_count}]" ) - if ( obj.run_test() ) - log_message( "Test succeeed - clearing alert" ) - success = true - alert.clear() - result = true + if ( obj.run_test() ) + log_message( "Test succeeed - clearing alert" ) + success = true + alert.clear() + result = true + end + count += 1 + end + + # + # If we didn't succeed on any of the attempts raise the alert. + # + if ( ! success ) + + # + # Raise the alert, passing the error message. + # + log_message( "Test failed - alerting with #{obj.error()}" ) + alert.raise( obj.error() ) end - count += 1 - end - # - # If we didn't succeed on any of the attempts raise the alert. - # - if ( ! success ) + rescue => ex + puts "Exception raised processing job: #{ex}" + ensure # - # Raise the alert, passing the error message. + # Delete the job - either we received an error, in which case + # we should remove it to avoid picking it up again, or we handled + # it successfully so it should be removed. # - log_message( "Test failed - alerting with #{obj.error()}" ) - alert.raise( obj.error() ) + log_message( "Job ID : #{job.id} - Removed" ) + job.delete if ( job ) end - rescue => ex - puts "Exception raised processing job: #{ex}" - - ensure - # - # Delete the job - either we received an error, in which case - # we should remove it to avoid picking it up again, or we handled - # it successfully so it should be removed. - # - log_message( "Job ID : #{job.id} - Removed" ) - job.delete if ( job ) + return result end - return result - end - - # - # Process jobs until we see a failure - stop then. - # - def process_until_fail + # + # Process jobs until we see a failure - stop then. + # + def process_until_fail while( process_single_job() ) - # nop + # nop end - end + end -end + end +end -- cgit v1.2.1