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authorSteve Kemp <steve@steve.org.uk>2012-11-26 10:56:27 +0000
committerSteve Kemp <steve@steve.org.uk>2012-11-26 10:56:27 +0000
commitf6b134149b469751d318cc1bbd72d29b735d3acb (patch)
treed0227ad3bcc356a6da041d1c853b2b49b3010450 /lib/custodian/alerts/redis-state.rb
parent1bc00fe308b4d6de3faddb1bfc1e7529f3ba6f40 (diff)
Added the redis-alerter.
Diffstat (limited to 'lib/custodian/alerts/redis-state.rb')
-rw-r--r--lib/custodian/alerts/redis-state.rb89
1 files changed, 89 insertions, 0 deletions
diff --git a/lib/custodian/alerts/redis-state.rb b/lib/custodian/alerts/redis-state.rb
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+++ b/lib/custodian/alerts/redis-state.rb
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+
+require 'rubygems'
+require 'redis'
+
+
+#
+# The redis-alerter.
+#
+# This doesn't raise/clear alerts in the traditional sense, instead it just
+# stores results in a redis database where you can poll them from a status-panel,
+# or similar.
+#
+# There is a global set called "hosts" which has the hostname-test-type lists
+# and the individual results can be pulled by simple key-fetches on those.
+#
+module Custodian
+
+ module Alerter
+
+ class AlertRedis < AlertFactory
+
+ #
+ # The test this alerter cares about
+ #
+ attr_reader :test
+
+ #
+ # The redis-object
+ #
+ attr_reader :redis
+
+
+ #
+ # Constructor - save the test-object away & instantiate
+ # the redis connection.
+ #
+ def initialize( obj )
+ @test = obj
+ @redis = Redis.new
+ end
+
+
+
+ #
+ # Store an alert in redis
+ #
+ def raise
+
+ # hostname + test-type
+ host = @test.target
+ test = @test.get_type
+
+ # store the error
+ @redis.set( "#{host}-#{test}", "ERR")
+ @redis.set( "#{host}-#{test}-reason", @test.error() )
+
+ # make sure this alert is discoverable
+ @redis.sadd( "hosts", "#{host}-#{test}" )
+ end
+
+
+
+ #
+ # Clear an alert in redis
+ #
+ def clear
+
+ # hostname + test-type
+ host = @test.target
+ test = @test.get_type
+
+ # store the OK
+ @redis.set( "#{host}-#{test}", "OK")
+ @redis.set( "#{host}-#{test}-reason", "")
+
+ # make sure this alert is discoverable
+ @redis.sadd( "hosts", "#{host}-#{test}" )
+ end
+
+
+
+ register_alert_type "redis"
+
+
+
+
+ end
+ end
+end