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module Commits
class RevertService < ::BaseService
class ValidationError < StandardError; end
def execute
@source_project = params[:source_project] || @project
@target_branch = params[:target_branch]
@commit = params[:commit]
@create_merge_request = params[:create_merge_request].present?
# Check push permissions to branch
validate
if commit
success
else
custom_error
end
rescue Repository::CommitError, Gitlab::Git::Repository::InvalidBlobName, GitHooksService::PreReceiveError, ValidationError => ex
error(ex.message)
end
def commit
if @create_merge_request
# Temporary branch exists and contains the revert commit
return true if repository.find_branch(@commit.revert_branch_name)
return false unless create_target_branch
repository.revert(current_user, @commit, @commit.revert_branch_name)
else
repository.revert(current_user, @commit, @target_branch)
end
end
private
def custom_error
if @branch_error_msg
error("There was an error creating the source branch: #{@branch_error_msg}")
else
error("Sorry, we cannot revert this #{params[:revert_type_title]} automatically.
It may have already been reverted, or a more recent commit may
have updated some of its content.")
end
end
def create_target_branch
result = CreateBranchService.new(@project, current_user)
.execute(@commit.revert_branch_name, @target_branch, source_project: @source_project)
@branch_error_msg = result[:message]
result[:status] != :error
end
def raise_error(message)
raise ValidationError.new(message)
end
def validate
allowed = ::Gitlab::GitAccess.new(current_user, project).can_push_to_branch?(@target_branch)
unless allowed
raise_error("You are not allowed to push into this branch")
end
end
end
end
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