migration.md

Migration from earlier versions

Any version breaking changes are described below.

Migration from 0.10 and below

New synchronization classes

0.11+ uses synchronization RwLock and Mutex from the parking_lot crate instead of std. So if you have compiler errors, replace your imports with:

use opcua::sync::*;

They haven't been added to the opcua::client::prelude or opcua::server::prelude in case your code uses std::sync types for other reasons that you need to resolve manually.

Migrating from 0.9 and below

Unified crate

OPC UA for Rust is now a single crate instead of many crates as it used to be. This makes it simpler to use, and also maintain and publish. If you are using 0.9 or below, you will have to make some minor adjustments to use the new layout.

In your Cargo.toml, reference the opcua crate instead of either opcua-server or opcua-client and specify client and/or server in the features, e.g.

[dependencies]
opcua = { version = "0.10", features = ["client"] }

And in your source code, use opcua::client:: or opcua::server:: instead of opcua_client:: or opcua_server::, e.g.

use opcua::client::prelude::*;