compare_action.rb
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module Gitlab
module Satellite
class CompareAction < Action
def initialize(user, target_project, target_branch, source_project, source_branch)
super user, target_project
@target_project, @target_branch = target_project, target_branch
@source_project, @source_branch = source_project, source_branch
end
# Only show what is new in the source branch compared to the target branch, not the other way around.
# The line below with merge_base is equivalent to diff with three dots (git diff branch1...branch2)
# From the git documentation: "git diff A...B" is equivalent to "git diff $(git-merge-base A B) B"
def diffs
in_locked_and_timed_satellite do |target_repo|
prepare_satellite!(target_repo)
update_satellite_source_and_target!(target_repo)
common_commit = target_repo.git.native(:merge_base, default_options, ["origin/#{@target_branch}", "source/#{@source_branch}"]).strip
#this method doesn't take default options
diffs = target_repo.diff(common_commit, "source/#{@source_branch}")
diffs = diffs.map { |diff| Gitlab::Git::Diff.new(diff) }
diffs
end
rescue Grit::Git::CommandFailed => ex
handle_exception(ex)
end
# Retrieve an array of commits between the source and the target
def commits
in_locked_and_timed_satellite do |target_repo|
prepare_satellite!(target_repo)
update_satellite_source_and_target!(target_repo)
commits = target_repo.commits_between("origin/#{@target_branch}", "source/#{@source_branch}")
commits = commits.map { |commit| Gitlab::Git::Commit.new(commit, nil) }
commits
end
rescue Grit::Git::CommandFailed => ex
handle_exception(ex)
end
private
# Assumes a satellite exists that is a fresh clone of the projects repo, prepares satellite for diffs
def update_satellite_source_and_target!(target_repo)
target_repo.remote_add('source', @source_project.repository.path_to_repo)
target_repo.remote_fetch('source')
target_repo.git.checkout(default_options({b: true}), @target_branch, "origin/#{@target_branch}")
rescue Grit::Git::CommandFailed => ex
handle_exception(ex)
end
end
end
end