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# Description Adds support for running plugins using local socket communication instead of stdio. This will be an optional thing that not all plugins have to support. This frees up stdio for use to make plugins that use stdio to create terminal UIs, cc @amtoine, @fdncred. This uses the [`interprocess`](https://crates.io/crates/interprocess) crate (298 stars, MIT license, actively maintained), which seems to be the best option for cross-platform local socket support in Rust. On Windows, a local socket name is provided. On Unixes, it's a path. The socket name is kept to a relatively small size because some operating systems have pretty strict limits on the whole path (~100 chars), so on macOS for example we prefer `/tmp/nu.{pid}.{hash64}.sock` where the hash includes the plugin filename and timestamp to be unique enough. This also adds an API for moving plugins in and out of the foreground group, which is relevant for Unixes where direct terminal control depends on that. TODO: - [x] Generate local socket path according to OS conventions - [x] Add support for passing `--local-socket` to the plugin executable instead of `--stdio`, and communicating over that instead - [x] Test plugins that were broken, including [amtoine/nu_plugin_explore](https://github.com/amtoine/nu_plugin_explore) - [x] Automatically upgrade to using local sockets when supported, falling back if it doesn't work, transparently to the user without any visible error messages - Added protocol feature: `LocalSocket` - [x] Reset preferred mode to `None` on `register` - [x] Allow plugins to detect whether they're running on a local socket and can use stdio freely, so that TUI plugins can just produce an error message otherwise - Implemented via `EngineInterface::is_using_stdio()` - [x] Clean up foreground state when plugin command exits on the engine side too, not just whole plugin - [x] Make sure tests for failure cases work as intended - `nu_plugin_stress_internals` added # User-Facing Changes - TUI plugins work - Non-Rust plugins could optionally choose to use this - This might behave differently, so will need to test it carefully across different operating systems # Tests + Formatting - 🟢 `toolkit fmt` - 🟢 `toolkit clippy` - 🟢 `toolkit test` - 🟢 `toolkit test stdlib` # After Submitting - [ ] Document local socket option in plugin contrib docs - [ ] Document how to do a terminal UI plugin in plugin contrib docs - [ ] Document: `EnterForeground` engine call - [ ] Document: `LeaveForeground` engine call - [ ] Document: `LocalSocket` protocol feature
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1.1 KiB
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21 lines
1.1 KiB
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MIT License
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Copyright (c) 2019 - 2023 The Nushell Project Developers
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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