Commit 34a6713d authored by Kamil Trzcinski's avatar Kamil Trzcinski

Split PagesWorker

parent 725f30d0
......@@ -12,7 +12,31 @@ class PagesWorker
return unless valid?
# Create status notifying the deployment of pages
@status = GenericCommitStatus.new(
@status = create_status
@status.run!
raise 'pages are outdated' unless latest?
# Create temporary directory in which we will extract the artifacts
Dir.mktmpdir(nil, tmp_path) do |archive_path|
results = extract_archive(archive_path)
raise 'pages failed to extract' unless results.all?(&:success?)
# Check if we did extract public directory
archive_public_path = File.join(archive_path, 'public')
raise 'pages miss the public folder' unless Dir.exists?(archive_public_path)
raise 'pages are outdated' unless latest?
deploy_page!(archive_public_path)
@status.success
end
rescue => e
fail(e.message, !latest?)
end
private
def create_status
GenericCommitStatus.new(
project: project,
commit: build.commit,
user: build.user,
......@@ -20,54 +44,51 @@ class PagesWorker
stage: 'deploy',
name: 'pages:deploy'
)
@status.run!
FileUtils.mkdir_p(tmp_path)
# Calculate dd parameters: we limit the size of pages
max_size = current_application_settings.max_pages_size.megabytes
max_size ||= MAX_SIZE
blocks = 1 + max_size / BLOCK_SIZE
end
# Create temporary directory in which we will extract the artifacts
Dir.mktmpdir(nil, tmp_path) do |temp_path|
# We manually extract the archive and limit the archive size with dd
def extract_archive(temp_path)
results = Open3.pipeline(%W(gunzip -c #{artifacts}),
%W(dd bs=#{BLOCK_SIZE} count=#{blocks}),
%W(tar -x -C #{temp_path} public/),
err: '/dev/null')
return unless results.compact.all?(&:success?)
# Check if we did extract public directory
temp_public_path = File.join(temp_path, 'public')
return unless Dir.exists?(temp_public_path)
FileUtils.mkdir_p(pages_path)
# Ignore deployment if the HEAD changed when we were extracting the archive
return unless valid?
results.compact
end
def deploy_page!(archive_public_path)
# Do atomic move of pages
# Move and removal may not be atomic, but they are significantly faster then extracting and removal
# 1. We move deployed public to previous public path (file removal is slow)
# 2. We move temporary public to be deployed public
# 3. We remove previous public path
FileUtils.mkdir_p(pages_path)
FileUtils.move(public_path, previous_public_path, force: true)
FileUtils.move(temp_public_path, public_path)
FileUtils.rm_r(previous_public_path, force: true)
@status.success
end
FileUtils.move(archive_public_path, public_path)
ensure
@status.drop if @status && @status.active?
FileUtils.rm_r(previous_public_path, force: true)
end
private
def fail(message, allow_failure = true)
@status.allow_failure = allow_failure
@status.description = message
@status.drop
end
def valid?
build && build.artifacts_file?
end
def latest?
# check if sha for the ref is still the most recent one
# this helps in case when multiple deployments happens
build && build.artifacts_file? && sha == latest_sha
sha == latest_sha
end
def blocks
# Calculate dd parameters: we limit the size of pages
max_size = current_application_settings.max_pages_size.megabytes
max_size ||= MAX_SIZE
blocks = 1 + max_size / BLOCK_SIZE
blocks
end
def build
......
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