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require 'open3'
require_relative 'gitlab_metrics'
class GitlabCustomHook
attr_reader :vars
def initialize(key_id)
@vars = { 'GL_ID' => key_id }
end
def pre_receive(changes, repo_path)
hook = hook_file('pre-receive', repo_path)
return true if hook.nil?
GitlabMetrics.measure("pre-receive-hook") { call_receive_hook(hook, changes) }
end
def post_receive(changes, repo_path)
hook = hook_file('post-receive', repo_path)
return true if hook.nil?
GitlabMetrics.measure("post-receive-hook") { call_receive_hook(hook, changes) }
end
def update(ref_name, old_value, new_value, repo_path)
hook = hook_file('update', repo_path)
return true if hook.nil?
GitlabMetrics.measure("update-hook") { system(vars, hook, ref_name, old_value, new_value) }
end
private
def call_receive_hook(hook, changes)
# Prepare the hook subprocess. Attach a pipe to its stdin, and merge
# both its stdout and stderr into our own stdout.
stdin_reader, stdin_writer = IO.pipe
hook_pid = spawn(vars, hook, in: stdin_reader, err: :out)
stdin_reader.close
# Submit changes to the hook via its stdin.
begin
IO.copy_stream(StringIO.new(changes), stdin_writer)
rescue Errno::EPIPE
# It is not an error if the hook does not consume all of its input.
end
# Close the pipe to let the hook know there is no further input.
stdin_writer.close
Process.wait(hook_pid)
$?.success?
end
def hook_file(hook_type, repo_path)
hook_path = File.join(repo_path.strip, 'custom_hooks')
hook_file = "#{hook_path}/#{hook_type}"
hook_file if File.exist?(hook_file)
end
end
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