Rust uses environment variables for a number of configuration options. Some of these include:
| variable | value | description |
|---|---|---|
| RUST_LOG | debug, info, warn, error | minimum Rust error logging level |
| RUST_TEST_THREADS | 1 | maximum number of concurrent threads for testing. |
In addition, durable sync configuration options can either be specified as environment variables (prefixed with SYNC_*) or in a configuration file using the --config option.
For example the following are equivalent:
$ SYNC_HOST=0.0.0.0 SYNC_MASTER_SECRET="SuperSikkr3t" SYNC_SYNCSTORAGE__DATABASE_URL=mysql://scott:tiger@localhost/syncstorage cargo run$ cat sync.ini
HOST=0.0.0.0
MASTER_SECRET=SuperSikkr3t
[syncstorage]
DATABASE_URL=mysql://scott:tiger@localhost/syncstorage
$ cargo run -- --config sync.iniOptions can be mixed between environment and configuration.
The following configuration options are available.
| Option | Default value | Description |
|---|---|---|
| debug | false | unused |
| port | 8000 | connection port |
| host | 127.0.0.1 | host to listen for connections |
| database_url | mysql://[email protected]/syncstorage | database DSN |
| database_pool_max_size | None | Max pool of database connections |
| master_secret | None | Sync master encryption secret |
| limits.max_post_bytes | 2,097,152 | Largest record post size |
| limits.max_post_records | 100 | Largest number of records per post |
| limits.max_records_payload_bytes | 2,097,152 | Largest ... |
| limits.max_request_bytes | 2,101,248 | Largest ... |
| limits.max_total_bytes | 209,715,200 | Largest ... |
| limits.max_total_records | 100,000 | Largest ... |