| # Licensed to the Apache Software Foundation (ASF) under one | |
| # or more contributor license agreements. See the NOTICE file | |
| # distributed with this work for additional information | |
| # regarding copyright ownership. The ASF licenses this file | |
| # to you under the Apache License, Version 2.0 (the | |
| # "License"); you may not use this file except in compliance | |
| # with the License. You may obtain a copy of the License at | |
| # | |
| # http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, | |
| # software distributed under the License is distributed on an | |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
| # KIND, either express or implied. See the License for the | |
| # specific language governing permissions and limitations | |
| # under the License. | |
| import logging | |
| # Logging level | |
| LOGGING_LEVEL = logging.INFO | |
| # Read/Write chunk size for NBD backend | |
| CHUNK_SIZE = 256 * 1024 # 256 KiB | |
| # NBD base:allocation flags (hole=1, zero=2; hole|zero=3) | |
| NBD_STATE_HOLE = 1 | |
| NBD_STATE_ZERO = 2 | |
| # NBD qemu:dirty-bitmap flags (dirty=1) | |
| NBD_STATE_DIRTY = 1 | |
| MAX_PARALLEL_READS = 4 | |
| MAX_PARALLEL_WRITES = 4 | |
| # HTTP server defaults | |
| DEFAULT_LISTEN_ADDRESS = "127.0.0.1" | |
| DEFAULT_HTTP_PORT = 54322 | |
| # Control socket | |
| CONTROL_SOCKET = "/var/run/cloudstack/image-server.sock" | |
| CONTROL_SOCKET_BACKLOG = 32 | |
| CONTROL_SOCKET_PERMISSIONS = 0o660 | |
| CONTROL_RECV_BUFFER = 4096 | |
| # Transfer idle timeout (seconds). A transfer is expired when no in-flight HTTP | |
| # requests have completed for this duration. | |
| DEFAULT_IDLE_TIMEOUT_SECONDS = 600 | |
| # Maximum size of a JSON body in a PATCH request (zero / flush ops) | |
| MAX_PATCH_JSON_SIZE = 64 * 1024 # 64 KiB | |
| # Byte range requested per block_status call for NBD extent queries | |
| NBD_BLOCK_STATUS_CHUNK = 64 * 1024 * 1024 # 64 MiB | |
| CFG_DIR = "/tmp/imagetransfer" |