discourse/app/controllers/admin/backups_controller.rb

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require_dependency "backup_restore"
class Admin::BackupsController < Admin::AdminController
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skip_before_filter :check_xhr, only: [:index, :show, :logs, :check_backup_chunk, :upload_backup_chunk]
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def index
respond_to do |format|
format.html do
store_preloaded("backups", MultiJson.dump(serialize_data(Backup.all, BackupSerializer)))
store_preloaded("operations_status", MultiJson.dump(BackupRestore.operations_status))
store_preloaded("logs", MultiJson.dump(BackupRestore.logs))
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render "default/empty"
end
format.json do
render_serialized(Backup.all, BackupSerializer)
end
end
end
def status
render_json_dump(BackupRestore.operations_status)
end
def create
BackupRestore.backup!(current_user.id, true)
rescue BackupRestore::OperationRunningError
render json: failed_json.merge(message: I18n.t("backup.operation_already_running"))
else
render json: success_json
end
def cancel
BackupRestore.cancel!
rescue BackupRestore::OperationRunningError
render json: failed_json.merge(message: I18n.t("backup.operation_already_running"))
else
render json: success_json
end
# download
def show
filename = params.fetch(:id)
if backup = Backup[filename]
send_file backup.path
else
render nothing: true, status: 404
end
end
def destroy
backup = Backup[params.fetch(:id)]
if backup
backup.remove
render nothing: true
else
render nothing: true, status: 404
end
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end
def logs
store_preloaded("operations_status", MultiJson.dump(BackupRestore.operations_status))
store_preloaded("logs", MultiJson.dump(BackupRestore.logs))
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render "default/empty"
end
def restore
filename = params.fetch(:id)
BackupRestore.restore!(current_user.id, filename, true)
rescue BackupRestore::OperationRunningError
render json: failed_json.merge(message: I18n.t("backup.operation_already_running"))
else
render json: success_json
end
def rollback
BackupRestore.rollback!
rescue BackupRestore::OperationRunningError
render json: failed_json.merge(message: I18n.t("backup.operation_already_running"))
else
render json: success_json
end
def readonly
enable = params.fetch(:enable).to_s == "true"
enable ? Discourse.enable_readonly_mode : Discourse.disable_readonly_mode
render nothing: true
end
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def check_backup_chunk
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identifier = params.fetch(:resumableIdentifier)
filename = params.fetch(:resumableFilename)
chunk_number = params.fetch(:resumableChunkNumber)
current_chunk_size = params.fetch(:resumableCurrentChunkSize).to_i
# path to chunk file
chunk = Backup.chunk_path(identifier, filename, chunk_number)
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# check chunk upload status
status = HandleChunkUpload.check_chunk(chunk, current_chunk_size: current_chunk_size)
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render nothing: true, status: status
end
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def upload_backup_chunk
filename = params.fetch(:resumableFilename)
total_size = params.fetch(:resumableTotalSize).to_i
return render status: 415, text: I18n.t("backup.backup_file_should_be_tar_gz") unless filename.to_s.end_with?(".tar.gz")
return render status: 415, text: I18n.t("backup.not_enough_space_on_disk") unless has_enough_space_on_disk?(total_size)
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file = params.fetch(:file)
identifier = params.fetch(:resumableIdentifier)
chunk_number = params.fetch(:resumableChunkNumber).to_i
chunk_size = params.fetch(:resumableChunkSize).to_i
current_chunk_size = params.fetch(:resumableCurrentChunkSize).to_i
# path to chunk file
chunk = Backup.chunk_path(identifier, filename, chunk_number)
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# upload chunk
HandleChunkUpload.upload_chunk(chunk, file: file)
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uploaded_file_size = chunk_number * chunk_size
# when all chunks are uploaded
if uploaded_file_size + current_chunk_size >= total_size
# merge all the chunks in a background thread
Jobs.enqueue(:backup_chunks_merger, filename: filename, identifier: identifier, chunks: chunk_number)
end
render nothing: true
end
private
def has_enough_space_on_disk?(size)
`df -Pk . | awk 'NR==2 {print $4 * 1024;}'`.to_i > size
end
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end