EXAMPLE: Jenkins-notify global post-receive hook example

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diff --git a/example/global-hooks/jenkins-notify.post-receive.lua b/example/global-hooks/jenkins-notify.post-receive.lua
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+-- jenkins-notify.post-receive.lua
+--
+-- Example post-receive global hook which notifies a Jenkins instance on
+-- any and all refs updates (except refs/gitano/*) which happen.
+--
+-- It notifies Jenkins *before* passing the updates on to the project hook.
+--
+-- Copyright 2012 Daniel Silverstone <dsilvers@digital-scurf.org>
+--
+-- This is an example which is part of Gitano.
+--
+
+local project_hook, repo, updates = ...
+
+local jenkinshost = "ci.gitano.org.uk"
+local basepath = "/jenkins/git/notifyCommit?url="
+local urlbase = "git://git.gitano.org.uk/"
+
+local notify_jenkins = false
+
+for ref in pairs(updates) do
+   if not ref:match("^refs/gitano/") then
+      notify_jenkins = true
+   end
+end
+
+if notify_jenkins then
+   log.state("Notifying Jenkins...")
+   local code, msg, headers, content =
+      http_get(jenkinshost, basepath .. urlbase .. repo.name .. ".git")
+   if code ~= "200" then
+      log.state("Notification failed somehow")
+   end
+   for line in content:gmatch("([^\r\n]*)\r?\n") do
+      log.state("jenkins: " .. line)
+   end
+end
+
+-- Finally, chain to the project hook
+return project_hook(repo, updates)